TRANSACTIONS
OF THE
AMERICAIST
ENTOMOLOGICAL SOCIETY.
HALL OF THE ACADEMY OF NATURAL
SCIENCES OF PHILADELPHIA,
LOGAN SQUARE.
PRESS OF
P C. STOCKHAUSEN
PHILADELPHIA.
LIST OK PAPERS.
PAGE.
Banks, Nathan.
On the Oribatoidea of the United States ... 1
New Neuropteroid Insects . . . . . .313
Cockerell, Theo. D. A.
Descriptions of new Hymenoptera . . . 289, 297
Davis, G. C.
A Monograph of the Tribe Bassini . . . .17
Descriptions of a few new Pimplinae . . . .30
Dyar, Harrison G.
On the Larvae of some Nematoid and other Saw-flies,
from the Northern Atlantic States .... 301
Fox, William J.
The Crabroninae of Boreal America . . . .129
Hamilton, John, M.I). *
Catalogue of the Coleoptera of Southwestern Pennsyl¬
vania, with notes and descriptions . . . .317
Horn, Geo. H., M.D.
Studies in Coccinellidae ...... 81
Johnson, Charles W.
A Revision of the Stratiomyia and Odontomyia of N.
America ......... 227
Roberts, Chris. H.
The species of Dineutes of America, North of Mexico . 279
Robertson, Charles.
Notes on Bees, with descriptions of new species. Third
paper . 115
Townsend, C. H. Tyler.
Contributions to the Dipterology of North America 33, 55
NEW AMERICAN ACARINA.
1
TRANSACTIONS
OF THE
AMERICAN ENTOMOLOGICAL SOCIETY.
VOLUME XXII.
ON THE OKI IS ATO IDEA OF THE UNITED STATES.
BY NATHAN BANKS.
The Oribatid mites are easily recognized by the division of the
body into two regions, cephalothorax and abdomen, by the presence
of a seta to a small pore near each posterior corner of the cepha¬
lothorax, by having the legs in the normal position (not separated
in pairs), and by their coriaceous tegument. Because of this latter
character they have often been called “beetle-mites.” The body of
an Oritabid is readily divided into two parts, the smaller and anterior
portion is the cephalothorax, the posterior part is the abdomen ;
beneath the tip of the cephalothorax is a distinct, articulated por¬
tion, the true head. To the head is attached the mandibles and
palpi, both of minute proportions. The cephalothorax is usually
more or less triangular ; a plate of tegument frequently extends from
the base of the abdomen down upon the cephalothorax, thus making
the surface of the cephalothorax continuous with that of the abdo¬
men, and the dorsal outline entire. This plate is known as the tecta!
plate or tectum. Whenever there is a distinct break in the dorsal
outline of the body at the junction of the cephalothorax and abdo¬
men the tectal plate is considered to be absent. And on this char¬
acter the true Oribatidse is divided into two sub-families, the Noth rime
in which it is absent, and Oribatinse in which it is present. Most of
the genera of the former have but one claw to tarsus, and most of
the genera of the latter have three claws ; but there are prominent
exceptions in each group. In some forms the tectal plate is free at
(1)
TRANS. AM. ENT. SOC. XXII.
JANUARY, 1895.
9
NATHAN BANKS.
tij) and divided into spines, more often it is wholly united to the
cephalothorax and only lateral lines or ridges mark its position ; at
its tip there is nearly always a pair of bristles, the anterior bristles ;
and above near base another pair is often present, the superior bris¬
tles. Near each posterior angle or corner of the cephalothorax is a
round spot or pore; from it arises a seta, often clavate ; these pores
are supposed to be the breathing stigmata. The legs arise from the
underside of the cephalothorax, the posterior pairs apparently coming
from the abdomen ; the cox;e are often more or less united into a
plate, the coxal plate ; but there is no real sternum. The legs con¬
sist of a coxa, a trochanter, longer femur, a short patella, a long
tibia, and a metatarsus and tarsus ; the latter two are often more or
less united. The claws vary from one to three in number. The ab¬
domen is of various shapes, often quite globose ; the dorsum is sepa¬
rated from the venter by a lateral line which is really double. In
some forms the base of the abdomen bears lateral expansions of the
tegument, these are called wings. On the venter are two apertures,
the basal one is the genital opening ; the apical one, the anal open¬
ing ; they are closed by two laterally hinged plates meeting on the
median line.
The young are soft-bodied mites, often obovate in form, and some¬
times with curious markings. In those species which have three
tarsal claws the young usually have but one claw. The young have
frequently been mistaken for adults and described under various
genera, as Murcia, Hypochthonius, Claviceps, Michcelia, etc. The
mite upon attaining the adult structure is not necessarily adult ; at
least they moult several times, afterward. These young, but not
larval forms are usually paler than the adult, but otherwise do not
differ, except in size. According to Michael, who has studied the
British species of this family very carefully, the young may be born
in four ways : I, as in the insects, the eggs laid and after a time
hatching; II, the eggs hatching as soon as laid; III, the eggs
hatching just before extrusion, ovo-vivi parous ; IV, the eggs never
being laid, but hatching within the parent some time after the latter’s
death.
The species are all small, rarely one millimetre long. They occur
in many situations, but none, so far as I know, regularly inhabit
houses or other buildings. Some occur under the loose bark of dead
trees, others on the bark ; some on plants, as grass and weeds in
meadows; sometimes even in flowers. Some occur in decaying
NEW AMERICAN ACARINA.
3
animal or vegetable substances, as bones, dead fungi, decaying sod.
A number inhabit moss, especially Sphagnum. Some live on the
ground, hiding in crevices, under leaves, sticks, etc. A few are
found on water plants, and one on the rocks between tides. They
all move quite slowly, and when disturbed are apt to “ play possum”
and be overlooked. Most of the species are vegetable feeders or
scavengers. In the former role they may be injurious, as 0. pra¬
te, min, which is very common in meadows, and 0. arhorea, which
occurs in great numbers on cedar and peach trees. In the role of
scavengers they may often be beneficial. Packard has stated that
Notkrus ovivorus sucks the eggs of the canker-worm moth.
Say, in the Jour. Acad. Nat. Sci. of Phil. vol. ii, 1821, described
two species of Oribata, — 0. concentrica and 0. glabrata, both of
which I have identified. The former by the peculiar structure of
its abdomen is easily placed in L lodes ; the latter must be an Hop-
lophorid, as Say states that the cephalothorax can be deflected on
the abdomen, and I have considered it to be the common form which
I have collected, and which agrees with the description. I)r. Riley
described Hoplophord arctata in vi Mo. Rept. 1874 (also in St. Louis
Acad. Science). From his figures it appears to be a Tritia, and I
think the young of T. glabrata Say. Prof. Packard, in his “ Guide
to the Study of Insects,” described Notkrus ovivorus; and Mr. Ash-
mead, in “Can. Ent.” 1879, described Oribata aspidiotii. These
two forms are very similar, and perhaps, as Haller suggests, identi¬
cal ; I have seen nothing that would agree with them. Their char¬
acters are very peculiar, and if adult (which is doubtful) they would
certainly be neither Oribata nor Notkrus, nor would they fit in any
genus known to me. 0. aspidiotii certainly seems to be a young
form. Fitch, in the 3d N. Y. Rept,, describes Or i bates Jrpilis ; the
description is so short and incomplete it is impossible to definitely
identify it. Considering its habits I have seen nothing that would
fit it; two species of Oribata are known to me as occurring in num¬
bers under bark, but both are smooth. It may be mv Scutovertex
pilosus. Karpelles (Beit, z. Naturgesch. d. Milben, Berlin, 1883)
has described two species of Not hr us from Pennsylvania, N. malleolus
and N. piled for m is. Both are very strange forms (according to the
descriptions), and I doubt if they are Oribatids at all, at least not
adult ones. I have seen nothing that would agree with them.
Haller (Beschr. ein. neu. Milben, I Amerikanischer Arten ; Arch,
tur Naturgesch. 1884) describes five species from “ Amerika” ( Ori-
TRANS. AM. ENT. SOC. XXII.
JANUARY, 1895.
4
NATHAN BANKS.
bata simplex, 0. monodactyla, 0. rileyi, O. americana and Eremceus
leporus). They are probably from Central America, and I have not
seen any of them. Berlese states that 0. monodactyla is the same as
0. dentatus Berlese. Packard (Cave Memoir) described Oribata
alata and Damceus bulbipedata. The descriptions are incomplete,
and the figures not very definite ; the former name is pre-occupied
by the common European form, and it appears to be similar to my
0. robusta. The latter, as stated in the text, is a Belba ; it differs
from B. minuta Bks. in having only a few hairs on the abdomen,
and in some minor characters of the legs. Dr. Riley, in his notes to
Hubbard’s “Orange Insects,” describes Hermannia (?) trinebulosa.
This is undoubtedly a larval Oribatid, and I have seen forms quite
like it, but I am not sure to what species it belongs. The three
species placed by Koch in the genus Claviceps ( Arach. aus. Siberien,
etc.) are young Oribatids; two species very similar to Dr. Riley’s
form. The larvae of Oribata pratensis and 0. arborea, which I have
collected are of the same shape, but lack the dark patches.
I have seen no form that would exactly fit European species ; but
Nothrus excisus, found on the bark of evergreens, comes very close
to the European A. segnis found in similar situations. Perhaps on
a comparison of specimens, some of our species will prove to be the
same as some European forms, particularly those from the northern
part of Europe.
The super-family Oribatoidea is at once divided into two well-
marked families : the Oribatidse, in which the cephalothorax is im¬
movably attached to the abdomen ; and the Hoplophoridse,* in
which the cephalothorax is movable. The latter family have the
dorsum of the abdomen continued down on the sides and venter,
leaving only a small ventral region. The Oribatoidse are readily
divided into two sub-families by the presence (Oribatidse) or absence
(Nothrinse) of a tectal plate. Some authors consider these as fami¬
lies, and equivalent to the Hoplophoridse. Berlese places two other
families in this super-family, the Tarsonemidse and the Panopliidse.
Canestrini places the Tarsonemidse next to the Tyroglyphidse.
Neither of the families has much resemblance to ordinary Oribatids,
and no forms have been recorded from the United States. The
Hoplopidse are also sometimes placed close to the Oribatidse ; the
species are rare, and no forms are known to me.
*■ This name; I suppose, will have to he changed, as Hoplophora is pre-occupied
in the Membracidse ; the other genus of the family, Tritia, is, I believe, pre-occu¬
pied in the Gasteropoda.
NEW AMERICAN ACARINA.
5
ORIBATIDiE.
The following genera are known to me :
1. — With a tectal plate . 2.
No tectal I'late . 6.
2. — With wings to abdomen . 3.
No wings . 5-
3. — One claw to tarsus . ©ribatodes.
Three claws to tarsus . 4.
4. — Tectal plate wholly attached to the cephalothorax, entire . ©ribata.
Tectal plate free at tip, which is more or less deeply cleft . ©ribatella.
5. — Tectal plate quite large, free at tip . Ceplius.
Tectal plate small, wholly attached to cephalothorax . Scntoverlex.
6. — One claw to tarsus . 7.
Three claws to tarsus . 8.
7. — Legs much shorter than body, cephalothorax with lateral ridges or wing-like
expansions . tarabodes.
Legs slender, posterior pair as long as the body, no wing-like expansions to
cephalothorax . Belba.
8. — Dorsum composed of concentric rings . L,iodos.
Dorsum different . N Otbr US.
OKI B AT A Latr.
With a tectal plate wholly united to the cephalothorax ; abdomen
furnished with lateral wing-like expansions ; three claws to the tarsus,
the middle one larger than the other two. Body more or less globose,
smooth, rarely with bristles ; legs shorter than the body and with
fusiform joints, thinly clothed with simple hairs, one near the tip of
the penultimate joint being much longer than the others.
The genus is very rich in species, and some species are very com¬
mon. The young are soft-bodied mites, sometimes with one or two
lai •ge, black spots ; upon attaining the adult form it is usually paler
and smaller than when really adult.
1. — With short bristles on abdominal dorsum . hirsuta.
Without bristles . 2.
2. — Wings as high as long, set® very short . arborea.
Wings longer than high . 3.
3. — Wings small, triangular, not projecting in front of abdomen . 6.
Wings large, more rectangular, projecting in front of abdomen . 4.
4. — Lower border of wing emarginate . eniargiuata.
Lower border entire . 5.
5. — Abdomen high, convex, a pale spot at base . robusta.
Abdomen depressed, no pale spot . depressa.
0. — Abdomen depressed, without any small smooth spots, legs short- . lmcsfa.
Abdomen high, convex, several small smooth spots . 7.
7. — Tectal plate terminated by a distinct transverse ridge . pratonsis.
No ridge, only a bristle each side . 8.
8. — No superior bristles, wings more than half as high as long . niagiia.
Superior bristles present, wings not half as high as long, very small. afli ills.
TRANS. AM. ENT. SOC. XXII. JANUARY, 1895.
Oi'ibala pratensis nov. sp. — Length .7 mm. Yellowish or reddish, legs
paler ; tectal plate broader than long, terminated by a transverse ridge, at each
anterior corner is a bristle, superior bristles long ; setae of stigmata very short,
capitate ; abdomen high, smooth, three small, smooth spots each side, the basal
one oblong ; wings small, about half as high as long, triangular ; venter smooth,
just in front of the anal opening there is the outline of a short, elavate figure ;
the genital opening fully twice its length in front of the larger anal opening; a
black spot on each side of coxal plate. Legs moderate, the femora broad.
Sea Cliff, L. I., N. Y. ; swept from grass in great numbers.
Oi'i l»u t a a Hi ii is nov. sp.— Length .8 mm. This species has much the re¬
semblance of 0. pratensis, having a high abdomen, small wings, broad femora, etc.
But it differs in a number of ways ; the tectal plate is about as long as broad at
base, it is not limited by a ridge ; there is a faint suture between the base of tec¬
tal plate and the abdomen, in which are two round spots ; the smooth spots on the
abdomen are smaller and indistinct ; the wings are not half as large as in 0. pra¬
tensis, being extremely small ; the seta* are longer ; the genital opening is not quite
twice its length in front of the anal ; on the coxal plate there is a line each side.
Washington, D. C. Many specimens under the loose bark of a
tree.
Oribata inagna nov. sp. — Length 1 mm. Reddish, legs paler ; tectal plate
quite long, no anterior ridge, only a bristle at each corner, no superior bristles ;
abdomen extremely high and convex, smooth, four small round spots on each
side, the three posterior forming a triangle; wings moderate, triangular, fully
half as high as long, tip rounded ; venter smooth, genital opening not quite twice
its length in front of anal ; a black spot each side on coxal plate ; legs moderate,
the femora broad, the posterior pairs distinctly margined ; setae of stigmata mod¬
erate, elavate.
Sea Cliff, N. Y. Five specimens.
By its large size and convex appearance it resembles Ceplms ni-
tidus, but is readily distinguished by its wings, etc.
Oribata moesta nov. sp. — Length .55 mm. Red-brown, legs yellowish,
have never observed a pale spot at base of abdomen ; tectal plate terminated each
side by a bristle, no anterior ridge, superior bristles quite long, erect ; abdomen
but little convex, depressed, smooth, shining ; wings small, triangular, tip rounded,
nearly one-half as high as long, not projecting in front of abdomen ; venter
smooth, genital opening one and one-half times its length in front of the larger
anal opening ; coxal lines nearly complete ; legs short ; setae moderate, capitate.
Sea Cliff, N. Y. Not uncommon on the ground.
Known by its small wings and flat body.
Oribata tlepressa nov. sp. — Length .45 mm. Red-brown, no pale spot
above, legs yellowish ; cephalothorax short, tectal plate terminated each side by a
bristle, superior bristles moderate, erect ; setae moderate in length, capitate ; ab¬
domen smooth, depressed, plainly longer than broad ; wings large and long, pro¬
jecting in front of the abdomen, twice as long as high, convex behind, in front,
NEW AMERICAN ACARINA.
/
and beneath, no emargination ; venter smooth, genital opening about twice its
length in front of anal opening ; a line and a spot each side on coxal plate ; legs
short.
One specimen, Sea Cliff, N. Y. Differs from 0. robmtci in smaller
size, flat body, more rounded wings, and absence of a pale spot.
O r i ba t it robust a nov. sp. — Length .75 mm. Reddish brown, legs yellow,
a small white spot at base of abdomen ; tecta 1 plate terminated each side by a bristle,
superior bristles erect; setae clavate, with a quite long stalk; abdomen convex,
highest at about the middle, smooth ; wings very large and long, broadly rounded
behind and below, entire, projecting much in front of the abdomen and obtusely
pointed ; venter smooth, genital opening twice its length in front of the very
much larger anal opening ; coxal plate each side with a line broadest at the outer
end ; legs moderate.
Three specimens from Sea Cliff, N. Y. ; two from Ft. Lee, New
Jersey ; and one from Washington, D. C. Distinguished by the
shape of its large wings, and by its long setae.
Oribafa einarginata nov. sp. — Length .75 mm. Black, yellowish at base
of abdomen and cephalothorax, tips of legs yellowish, femora often whitish ;
young specimens more reddish ; cephalothorax short and convex, more steep than
in allied forms; tectal plate terminated each side by a bristle; superior bristles
short, erect ; set;e moderate, clavate ; abdomen broad, high, convex, smooth, shin¬
ing, two incisions on anterior margin ; wings large, somewhat rectangular, pro¬
jecting in front of abdomen, anterior and posterior sides oblique and convex,
rounded beneath on posterior part, strongly emarginate a little in front of middle,
venation often quite distinct; venter smooth, genital opening about once and a
half its length in front of the larger anal opening ; a line on each side of coxal
^ '
plate ; legs as usual.
Not very common, in moss. Sea Cliff, N. Y. ; Chicago, Ill. ; Brazos
County, Texas. Easily recognized by its large, emarginate wing and
dark color. A male adult is somewhat smaller.
Orihata arborea nov. sp. — Length .6 mm. Yellow, or reddish brown,
often with a white spot at base of abdomen ; body moderately convex and high,
highest behind ; tectal plate, terminated each side by a bristle, superior bristles
moderate, erect ; setse very short, clavate ; abdomen smooth, sometimes showing
an oblong spot at base ; wings as high as long at base, tapering each side to the
rounded tip ; venter quite smooth, genital opening once and a half its length in
front of the much larger anal opening, a short transverse line a little in front of
anal opening, two lines each side on coxal plate ; legs about as usual, posterior
femora broad.
Sea Cliff, N. Y. Common on cedar and peach trees. Readily
distinguished by the shape of the wings and by the very short sette.
Oribata birsuta nov. sp. — Length .4 mm. Wholly pale brownish yellow;
cephalothorax triangular, convex, two superior bristles and two marking its tip ;
set* short, capitate ; abdomen not high, a little longer than broad, smooth, ante-
TRANS. AM. ENT. SOC. XXII.
JANUARY, 1895.
8
NATHAN BANKS.
rior margin with two incisions, bearing above about thirty bristles, those near the
tip slightly longer than the others; wings moderate, somewhat triangular,
rounded, the lower margin incurved; venter quite roughly granulate, the genital
opening much more than its length in front of the larger anal opening ; two short
lines each side on the coxal plate ; legs short.
Sea Cliff, N. Y. Quite common, especially in sandy places, under
dead leaves. Readily distinguished by its small size, bristly body
and yellowish color.
ORIBATELL4 liov. gen.
The tectal plate is large and joined to the cephalothorax only at
base, the apex free and usually divided into two or more lobes or
spine-like projections. The body is more often bristly than in Ori-
bata, otherwise it is very similar to that genus.
Though several species are known to me they are all moderately
rare, strongly contrasting in this respect with the abundance of
several species of Oribata.
1. — With some bristles on abdomen . > . 2.
No bristles on abdomen . 4.
2. — Tectal plate bidentate . -3.
Tectal plate quadridentate . 4-. longicornis Prov. ibid. 799, 'J, .
B. aciculatns Prov. Add. Faune Hymen. 368, 9 •
B. auriculatus Prov., ibid. 429, 9 •
9 • — Length 4-5 mm. Head, thorax, base, and usually extremity of abdomen,
shining black ; mouth, tegulae, spot in front and line beneath each wing, light
yellow ; antennae slender, reddish brown. Wings large, very clear, veins and
stigma light brown ; areolet incomplete, pentangular in outline. Abdomen slen¬
der ; first and second segments aciculated, tip of segment 2, all of 3 and 4, and
base of 5, rufous. Legs, except coxae, honey-yellow.
. — Differs only in having the entire face and scape beneath, light yellow.
The three synonyms of costaMs are all from descriptions of males.
Four female and four male specimens ; Canada, New Hampshire,
Montana, Washington.
Promethus elongatus Prov. (Bassus), Faune Ent. Can. ii, 799, % 9 •
9 . — Length 4-5 mm. Black, with segments 2, 3 and 4 of the abdomen more
or less red ; antennae reddish brown ; spot beneath at base, mandibles, palpi,
tegulae, spot in front, beneath and above on mesonotum, trochanters and tips of
coxae yellowish white. Base of coxae generally black ; posterior tarsi dusky ;
remainder of legs honey-yellow ; metathorax coarsely punctured ; first segment
of abdomen long, rectangular and rugose ; second segment aciculated.
■J, . — Differs in having the entire face, antennae beneath and a crescent on the
mesonotum yellowish white.
Four female and two male specimens from Canada, New Hamp¬
shire and Michigan.
Promet lliis i’ll ficrus Walsh (Bassus), Trans. St. Louis Acad, iii, 86. 'J, .
9 . Length 5.5 mm. Black, polished ; central portion of abdomen, legs and
antennae rufous: spot beneath antennae extending on to sides of clypeus, mandi¬
bles, except tips, palpi, tegulae, spot in front, lines beneath each wing, short line
on mesonotum, transverse line on prosternum, diagonal line on mesopleurae, all
TRANS. AM. ENT. SOC. XXII.
FEBRUARY, 1895.
22
G. C. DAVIS.
the trochanters and four anterior coxae, yellowish white. Abdomen beyond first
segment strongly compressed ; first segment black, densely punctured, second
segment entirely rufous ; third, fourth and fifth rufous, with black spot above ;
remaining -segments black ; venter rufous, except at tip. In one specimen the
pleurae have a rufous dash on them.
From Walsh’s description of the % , it differs only in having the whole clypeus,
all coxae and trochanters, line on mesonotum, extending into a hook in front,
yellowish white; antennae brown-black, with scape beneath yellowish; and ter¬
minal third of segment two and all of segment three of the abdomen, rufous.
Male not seen ; female described from two specimens sent me from
Algonquin, III., by Dr. Nason, who has aided me greatly in finding
many of Walsh’s species. Whether these females belong with the
male type is somewhat doubtful, though probable.
ZOOTREPHES Foerster.
Abdomen black, segments more or less margined with white.
Pleurae and sternum honey-yellow . frigid us Cr.
Pleurae and sternum black.
Posterior tibiae fulvous, black at tips ; segments of the abdomen with narrow
inobscure yellow margins on segment 2 . sc;i}>u 1st I llN Prov.
Posterior tibiae entirely fulvous, segments of abdomen with broad yellow
margins . maudae n. sp.
Abdomen with the segments more or less rufous.
First segment of the abdomen longitudinally carinated with a groove between.
Scutellum yellow . saginutus Prov.
Scutellum black . autennatus n. sp.
First segment of abdomen even and oval.
Scutellum and base of abdominal segments black. iclineumonides Prov.
Scutellum black or reddish, segments 3 and 4 always rufous.
moutauus n. sp.
Scutellum yellow, segments 2 and 3 rufous . cingulatns Prov.
Zoof replies frigid us Cr. (Bassus), Trans. Amer. Ent. Soc. ii, 111, 9 .
9 . — Length 5.5 mm. Black, with pleurae, entire sternum and legs, except pos¬
terior tibiae and tarsi, honey-yellow; labrum, tegulae, base of the segments of
posterior tarsi, posterior tibiae at base and a broad annulus in the centre, white.
Thorax and first abdominal segment strongly carinated ; the tip of the segment
shows some evidence of the cross suture.
Only Mr. Cresson’s type from Hudson Bay seen ; S not known.
Zoot replies scapufatus Prov. ( Bassus ), Faune Ent. Can. ii, 798, 9-
9 . — Length 6. mm. Black, robust, with mouth, large orbital lines in front,
tegulae, spot in front, spots above on mesonotum, spot on scutellum and front coxae,
yellowish white. Legs fulvous, with tips of posterior tibiae and their tarsi fuscous.
Metathorax coarsely punctured, areolated, and aciculated in the large centrax
area. Abdomen compressed at the extremity, segments 1, 2 and 3 coarsely punc¬
tured ; segment 2 with a narrow, rather unobscure, pale yellow line at tip.
Provancher’s type, collected at Cape Rouge (near Quebec), Can.,
is the only specimen known to me.
AMERICAN HYMEN OPTERA.
23
Zootreplies inconstans n. sp.
.
9. — Length 5.5 mm. Black, with abdomen in part rufous; mouth except
mandibles at base, large anterior orbits reaching above the antenn*, tegul*, spot
in front, line beneath, line on mesonotum, line between meso- and metapleur*,
pyramidal spot on scutellum, trochanters and extremity of the cox*, pale yellow ;
rest of the cox* black ; legs fulvous, posterior tarsi dusky. Abdomen robust,
first segment rugose, segments 2 and 3 rufous, and 4 and 5 margined with rufous,
remainder black.
'J, —Has scape beneath, entire face, prosternum, crescent on anterior meso¬
notum, four anterior cox* and margins of first five abdominal segments, pale
yellow.
Female described from Provancher’s type ; one male from New
Hampshire.
AMERICAN HYMENOPTERA.
25
XY RPHOCTO A US Foerster.
Posterior tibiae black, pale at base . ugili** Cr.
Posterior tibiae fulvous, black at tip.
Pleura rufous, scutelium yellow . . . pleuraliw Cr.
Pleura and scutelium black . robustus n. sp.
Posterior tibiae fulvous, tarsi sometimes dusky.
Abdomen entirely black.
Face with white orbital lines . gillettii n. sp.
Face entirely black . mellipes Prov.
Abdomen black, with segments margined with white. • • -liiaculitrons Cr.
Abdomen more or less rufous.
Thorax black . pacified* Cr.
Thorax red . cressonii n. sp.
SyrphoctonuN agilis Cr. (Bassus), Trans. Amer. Ent. Soc. ii. 111, 'J, .
Baums frontalis Cr., ibid. 9 •
Mesolius junctus Prov., Faune Ent. Can. ii, 797, 9 •
9 . — Length 5 mm. Black, with brown antennae ; spot on front, spot on man¬
dibles, tegulae, spot in front, line beneath, triangular spot on sides of mesonotum,
tip of scutelium, line between meso- and metapleurae and base of posterior tibiae,
white. Legs, except posterior tibiae and tarsi, ferruginous.
Differs in having the entire face, underside of antennae, entire sternum,
front of pleurae, post-scutellum and two spots at base of third segment of abdo¬
men, yellow. Legs vary from rufous to a light fulvous.
Abdominal segments in the 9 tend to show more or less signs of rufous, but in
the 'J, this characteristic becomes still more marked.
Thirteen female, three male specimens; Illinois, Michigan, South
Dakota, New Hampshire, Massachusetts, New Jersey, Pennsylvania,
North Carolina and Ottawa, Canada.
Syrphocton ns pleuralis Cr. (Bassus), Trans. Amer. Ent. Soc. ii, 111. 9 •
Bassus syrphicola Askm., Proc. U. S. Nat. Mus. xii, 439.
9 . — Length 7 mm. Black, with spot on front, mouth, tegulae, spot in front,
broad line on margins of mesonotum, scutelium, post-scutellum, and more or less
distinct margins on abdominal segments, yellowish white. Legs, except posterior
tibia; and tarsi, venter, most of pleura and most of metathorax, honey-yellow.
. — Same as 9 » but the face, cheeks, antennae beneath, and the entire ventral
and lateral portion of the thorax, except large black spot beneath wings, are yel¬
lowish white.
Two female and one male specimens from California and Ohio.
Syrplioctonus robustus n. sp.
^ . — Length 7.5 mm. Black, with face, antennae beneath, spot on cheeks,
mouth and tegulae, light yellow. Legs honey-yellow, except tips of posterior
tibiae and tarsi, which are nearly black. The entire body is rather coarsely punc¬
tured, with metathorax and first three segments of abdomen particularly so.
Basal segment of abdomen with an elliptical ridge reaching nearly to the tip :
segments of abdomen broad, depressed, narrowing at the tip after the third seg¬
ment ; antennae reddish brown above. Wings hyaline with stigma and veins,
except costal at base, brown.
TRANS. AM. ENT. SOC. XXII.
(4)
FEBRUARY, 1895.
G. C. DAVIS.
26
Described from one specimen from Washington. Type in the
Cresson collection.
S.vrplioHoims gilloMii n. sp.
9 . — Length 4.5 mm. Black, shining, with short yellowish pubescence; broad
orbital lines in front, mouth, tegulje, spot in front and line beneath each wing,
yellowish white. Legs honey-yellow ; ocelli prominent ; antennae black, reddish
brown beneath. Wings hyaline, stigma and veins brown. Head and mesothorax
very broad ; metathorax, all of first and second abdominal segments and basal
half of the third and fourth, coarsely and deeply punctured; segments of abdo¬
men about equal width throughout.
Described from one female sent by Prof. C. P. Gillette, of Colo¬
rado, to whom I take pleasure in dedicating this species.
Sy rpliocl on 1 1* mellipes Prov. (Bassus), Add. Faune Hymen. 429.
9 . — Length 3.7 mm. Black, with legs pale yellow ; metathorax hicarinate :
first segment of abdomen aciculated and second punctured.
Canada. Type not seen, but probably does not belong here.
Kyi’plioclomiM maciilifrons Or. ( Bassus ), Proc. Ent. Soc. Pliila. iv, 272, 9 •
Bassus sernifasdatus Walsh, Trans. St. Louis Acad, iii, 87, ^ .
9 .—Length 5-7.5 mm. Black, with a spot beneath antennae, triangular spot
on each side near eyes, mouth, tegulae spot in front, line beneath, cuneiform line
on mesonotum, scutellum, post-scutellum, and interrupted margins on abdominal
segments, yellowish white. Legs rufous, except posterior tarsi, which are nearly
black.
£ . — Has face, scape beneath, cheeks beneath, four anterior coxa* and trochan¬
ters, crescent on mesosternum and longitudinal dash on pleurae, yellowish white;
other markings as in 9 •
Fourteen specimens from California, Nevada, Colorado, Montana
and Illinois.
!S.y rplioHonus pa<*i liens Cr. (Passns), Proc. Acad. Nat. Sci. 1878, 376, 9-
Bassus xanthopsis Ashm., Proc. U. S. Nat. Mus. xii, 440, £ .
£ . — Length 5-6 mm. Black, with the central part of abdomen rufous; oblong
spot on front, mouth, tegulae, spot in front, line beneath, large cuneiform spot on
margins of mesonotum, stripe between meso- and metapleurae; trochanters and
more or less of coxae, yellowish white; most of posterior coxae and base of the
others, black ; remainder of legs rufous. Abdomen, with tip of segment 2, all of
segment 3, and more or less of segment 4, rufous; segments l and 2 roughly
sculptured.
^ . — Differs in having the entire face, scape beneath, prosternum, anterior mar¬
gin of mesosternum continuing onto pleurae, longitudinal stripe on lower meso-
pleurae, more or less of four anterior legs and a more or less distinct yellow band
or two dots at base of third abdominal segment, yellowish white; fourth and
fifth segments of the abdomen usually black, margined with rufous.
Two female and seven male specimens from California, Nevada,
Washington and Vancouver’s Island.
AMERICAN H YM ENOPTERA.
Syrphortoims cressonii n. sp.
9 • — Length 6 mm. Rufous, except head, posterior tarsi and segments of the
abdomen beyond the third, which are reddish black. The following are yellow
tinged with red : large central spot beneath antenme on front, elypeus, mandi¬
bles, except teeth, which are black, palpi, tegula?, spot in front, lines on margin
of mesonotum, scutellum and post-scutellum. Wings hyaline, stigma large,
brown; first three segments of abdomen finely punctured, the second somewhat
aciculated at the sides. The form is broad, plump and short ; antennae wanting.
Described from one specimen from Nevada. This specimen is in
the Cresson collection, and is dedicated to Mr. E. T. Cresson for the
many kind favors shown me in the study of this tribe.
EXIZEMIDI Foerster.
Euizemuni tibiale Or. (Bassus), Trans. Amer. Eut. Soc. ii, 110, 9.
9 • — Length 6 mm. Black, with mandibles, palpi, costae, tegulse, faint line
beneath, spots on margin of mesonotum. parallel capillary lines back of scutellum
and post-scutellum, more or less of trochanters and base of posterior tibia;, white ;
posterior tarsi, tibiae, except base, and tips of femora black ; remainder of legs,
labium, mesonotum, with lower part of pleurae and scutellum, honey-yellow ;
antennae brown. Wings slightly dusky. Abdomen with segments 1 and 2 and
most of 3, coarsely punctured, rugose, and coarsely aciculated at the base of the
segments; two marginal and two central carinae on segment 1. the two latter ex¬
tending close together about half the length of segment 2.
% . — Differs in having the sternum and scutellum black ; the entire face, scape
beneath, prosternum, anterior part of mesonotum, trochanters and four anterior
coxae, yellowish white ; rest of legs fulvous (except posterior tibiae and tarsi, which
are the same as with the 9 ) and the three basal segments of the abdomen, which
are coarsely longitudinally aciculated. This last character, with the different
color markings, may make a new species when more material has been examined.
Tli ree female and one male specimens from Illinois, Montana,
Colorado and Canada.
HOMOTROI’US Foerster.
Abdomen black, or with yellow markings.
Posterior- co xse black, or black and yellow . bnmeralis Prov.
Posterior coxa; same color as femora.
9 with yellowish white capillary lines on scutellum and post-scutellum, and
face without spot; without yellow markings on the abdomen.
bicapillaris Walsh.
9 with sides of scutellum and usually the capillary lines yellowish white,
face with white spot; % with yellowish white band or spots at base
of third abdominal segment . var. albopict 11s.
Abdomen more or less rufous.
Face without orbital lines (9) . palli penilis Prov.
Face with orbital lines ( 9 ) or entirely yellow % . decora 1 11** Cr.
Ilomotropns haiueralis Prov. (Bassus), Faune Ent. Can. ii. 429, % .
Bassus fascitarsus Prov., ibid. 430, 9 •
9 ■ — Length ti mm. Black, with elongate spot on face, sometimes obscure or-
TRANS. AM. ENT. SOC. XXII.
FEBRUARY, 1895.
28
G. C. DAVIS.
bital lines, mouth, tegulae, spot iu front, line below, cuneiform band on margins
of mesonotum, tip of scutellum and band between mesor and metapleurae, yellow¬
ish white. Legs ferruginous, coxae black and yellowish white ; posterior tarsi an 1
tips of tibiae fuscous. Abdominal segments 1, and 2 and 3 at base finely rugose ;
tips of segments obscurely margined with red in some specimens.
% . — Differs in having the lace, scape beneath, prosternum, stripe on front of
mesopleurae, four anterior coxae and trochanters, and two spots or a band at the
base of third abdominal segment, yellowish white. Iu a few specimens this band
is absent, while in others there is also a band at the base of the fourth segment.
Fourteen female and forty-six male specimens from S. California,
Nevada, Washington, Colorado, Montana and Canada.
II oinof ropus bieapillaris Walsh {Baums), Tr. St. Louis Acad, iii, 88, 9 •
Bassus belangeri Prov., Faune Eut. Can. ii, 430, 9 •
Bassus pectoralis Prov., ibid. 431, £> .
9 . — Length 6 mm. Black, mouth, tegulse, spot in front, line beneath, broad
line on margins of mesonotum, line between meso- and metapleura; and two capil¬
lary lines extending from wing to wing, passing over the tips of scutellum and
post-scutellum where they become somewhat broadened, yellowish white ; pleurae,
scutellum and clypeus have a tendency to be more or less rufous. Legs pale
rufous, with posterior tarsi and tips of tibiae, black. Abdomen with first segment
scabrous and base of second coarsely aciculated, remainder of segments finely
punctured ; metathorax with long white pile.
'J, . — Differs in having the face, scape beneath, hand on anterior part of meso-
sternum, extending onto pleurae, and four anterior coxa- and trochanters yellowish
white.
Four female and one male specimens from Colorado, Illinois, New
Hampshire and Canada.
Var. a I bop id us differs in the female having a large white spot on the front
and the sides of the scutellum yellowish white, and in the %, having, besides the
markings on the sides of the scutellum, a yellowish white band at the base of the
third abdominal segment. The first abdominal segment varies from finely scab¬
rous to coarsely aciculated.
Described from six female and three male specimens from Colorado,
Washington, Canada and Michigan.
This may be a separate species, but as the specimens are so variable
iu the above markings, it seems best to only make them a variety of
bieapillaris.
Homotropus pallipenuis Prov. (Bassus), Faune Ent. Can. ii, 431, 9 •
9 . — Length 5.5 mm. Black, with abdominal segments 2, and 3 and 4 at tip at
least, ferruginous; moutti, small spot in front, costae, tegulse, spot in front, line
beneath, cuneiform line on margins of mesonotum, scutellum, post-scutellum with
capillary line to wings, suture between meso- and metapleurae, trochanters and
four anterior coxae yellowish white : posterior coxae black, tipped with yellow ;
tips of posterior tibiae and their tarsi dusky; remainder of legs honey-yellow.
Wings hyaline, stigma yellowish brown ; antennae brown. Abdomen closely and
finely punctured.
AMERICAN HYMENOPTERA.
29
Description taken from Provancher’s type and from one specimen
in Mr. Cresson’s collection, both females and from Canada ; % not
known.
Homotropus tlecoratus Cr. (. Bassus ), Proc. Acad. Nat. Sci. Plnla. 1878,
375, %.
also front tibiae narrowly on inside at tip. Wings fuscous-hyaline, dilute flavous
on more than basal half.
Constantine, Mich., August 26. One male ; agrees well with
Bigot’s description, but as the latter is not detailed the identity can¬
not he certain.
62. Helopliilus latifrous Loew.
Las Cruces, N. Mex. One female, June 8. Length 12 mm.
Agrees well with Williston’s description ; antenme black, arista
yellow.
63. Helophilus similis Mcq.
Constantine, Mich. One male and one female, August 28 and 31.
Length 12-13 mm. Agree well with the distinctive characters
pointed out by Williston wherein the species differs from latifrons.
64. llallola cimbiciformis Fall.
Washington, D. C. (Marlatt), May 17. One male. Length only
10.5 mm. Belonging to the form rimbiciformis, unspurred; pile of
frontal triangle and face yellowish white, sparse ; brown spot of
wings faint ; pile of front and middle legs more or less yellowish ;
pile of abdomen all black, except at base.
63. Tropidia inrana n. sp.
Length about 7 mm. Differs from female of T. qundrata as follows : Face and
cheeks entirely shining black, somewhat silvery pollinose. Face distinctly con¬
cave in profile. Antenna: dark reddish or reddish brown. No median pollinose
stripes apparent on thoracic dorsum ; whole thoracic dorsum and scutellum shin¬
ing black, the latter without any yellow on the border ; pleurae also shining black.
Abdomen pale red, first segment black, except hind angles ; second segment with
a median black vitta, which is expanded anteriorly, coalescing with the black of
first segment ; posteriorly it is also widened about half way to lateral edge on
AMERICAN DIPTERA.
53
each side ! third segment with a similar vitta, but not at all widened anteriorly^
truncate instead, posteriorly widened in a similar manner to that on second seg¬
ment, but less so ; fourth segment with a black subtriangular marking, truncate
anteriorly ; posterior borders of second and third segments reddish, very narrowly
yellowish on the edge, that of fourth segment more yellowish ; venter red, black¬
ish at base in middle. Legs black, knees of anterior aud middle pairs yellowish.
Wings subfuscous, nearly hyaline, stigma flavous. The first posterior cell is more
broadened and shortened, the last section of fourth vein bulging out more.
Fort Collins, Colorado (Gillette). One female.
It may at once be known from T. quadrata by its red abdomen
and shining black face, combined with the absence of a yellow border
on the scutel lum.
66. Tropitlia quadrata Say.
Washington, D. C., May 19. One male. The posterior band of
second segment is wholly reddish yellow, brownish at lateral ends ;
rest of light color of segment yellow, leaving only an opaque black
T, which is not inverted, and the bar of which extends on hind bor¬
der of first segment. Third segment with the opaque, black, median
vitta abbreviated on more than its posterior half, lapsing into reddish
yellow, which spreads along hind margin of segment.
67. Xylota clialybea Wied.
Washington, D. C., May 22. One male. Length 14 mm. Dor¬
sum of thorax and scutellum with a strong violet shade.
68. Xylota flavitibia Bigot.
Fort Collins, Colorado (Gillette). One male ; pleurae and scutel¬
lum with longer whitish pile than dorsum of thorax, which is thinly
pilose. First abdominal segment wholly black, apparently without
red hind angles ; but the anterior angles of the red second segment
appear to be very acute and to fill the place of the hind angles of
the first, which seem cut off or rounded. The brownish of front and
middle tibiae is not very noticeable. Wings hyaline, only the stigma
pale yellowish.
69. Xylota pigra Fab.
Washington, D. C., May 22. One female ; scutellum concolorous
with thoracic dorsum. Black of second segment faintly apparent in
a median vitta on third, and even on base of fourth ; ovipositor ex-
serted, very long, curved under abdomen, pale brownish, not orange
like the fifth segment, from which it is protruded ; fifth segment sub-
triangular, very narrow behind ; ovipositor consisting apparently of
three segments.
TRANS. AM. ENT. SOC. XXII.
MARCH, 1895.
54
C. H. TYLER TOWNSEND.
70. Syritta pipions Linn.
Constantine, Mich., $ 9 . Hanover, X. H. (Weed), one female,
Riley County, Kansas (F. Marlatt), %> 9. Mountain View, Cal.
(Ehrhorn), May to October, 1 9 . Las Cruces, X. Mex., one female,
June 7.
This species does not seem to spread into the tropical regions of
America.
71. Spilomyia longicornis Loew.
Constantine, Mich., August 31 to September 1, three females and
two males. Dixie Landing, Va. (near Washington, D. C.), October
5, one male. Length 12-15 mm. They all agree very well with
the description ; the hypopygium is brown, almost shining black in
the Virginia specimen. The latter also has more brown on posterior
side of hind femora.
In one female the yellow bands of abdomen, except the anterior
fascia of second segment, is faded into a brownish color.
72. Spi loniyia quailrifasciata Say.
Constantine, Mich., August 21 to 31, one male and four females.
Length 11-14 mm. Frontal triangle in the one male pale brownish
next base of antennae.
73. Itlilesia ornata Fab.
Washington, D. C., August 4. One male ; a normal specimen.
74. Ceria abbreviata Loew.
Fort Collins, Colorado (Gillette). One female; the third antennal
joint is light reddish brown, the tip of second joint being coneolor-
ous with it. The scutellum is widely (about two-thirds its width
antero-posteriorly), bordered with yellow. The posterior yellow bor¬
der of second abdominal segment is distinctly, but not greatly wider
than those of third and fourth segments. Legs pale reddish, bases
of hind tibiae broadly yellow, of middle and front tibiae more nar¬
rowly so ; possesses all the other characters in detail given in Willis-
ton’s description.
75. Ceria Iridcns Loew.
Las Cruces, X. Mex., April 8, one male; June 21, one female.
Length 9-9.5 mm. Facial stripe brownish yellow in female ; yellow
extending wholly across frontal triangle, with only a thread of light
brown ; yellow oval spots of vertex narrowly separated in female by
AMERICAN DIPTERA.
55
a brown line, in male merged in a single, light yellow, swollen mark¬
ing. The small yellow spot on the pteropleurse is very faint in the
female, wholly absent in the male ; scutellnm almost wholly yellow
in both ; yellow bands' of second and third segments hardly widened
laterally ; grayish pollinose lateral Innate markings of fourth seg¬
ment plain in female, only the ends apparent in the male ; hind
femora of male colored like the others, brownish ring of tibiae very
faint. Legs of female entirely ochraceous, bases of tibiae yellow,
hind tarsi brownish , otherwise the specimens agree with Williston’s
descriptions of the two sexes.
These two specimens I believe to belong to the same species, and
are doubtless tridens Lw., notwithstanding the above differences.
The second and third abdominal segments are of nearly equal length
in both.
t OXTRIBI TIOIVS TO THE DIPTEROLOGY OF
NORTH AMERICA.
II. — TABANIDiE, CONOPID.E, TACHINID.E, Etc.
BY C. H. TYLER TOWNSEND.
This paper is a continuation of the work begun in the first part,
which was on the Syrphidse (Trans. Am. Ent. Soc. p. 33, 1895). The
present and second part embraces the three families above mentioned,
and completes the author’s notes and descriptions so far made on the
Townsend collection, which, as before stated, now forms a part of
the University of Kansas collection of North American Diptera.
Therefore all of the types herein described are to be found in that
collection, with the exception of a very few recently acquired, and
which are duly noted.
STRATIOMYIDJE.
1. Pacliygaster pulcher Lw.
Las Cruces, N. Mex. A female taken on foliage, May 5, proves
to be this species. Unlike the two female specimens from Montana,
mentioned by Williston in “Can. Ent.” 1885, p. 128, it has the
femora blackish, except at base and tip. The front and third coxse
are also black, except at tips. The short pubescence of mesoscutum
TRANS. AM. ENT. SOC. XXII.
MARCH, 1895.
56
C. H. TYLER TOWNSEND.
is brassy golden in color. There is some very indistinct white pubes¬
cence on pleurae. The length is 2 mm. (abdomen is hexed under
apically) ; length of wing 2.5 mm.
TAB AN IILE.
2. Chrysops callidns Osten Sacken.
Dixie Landing, Va., June 1 to July 6. Four females; ends of
/\-shaped marking on second segment prolonged laterally along the
hind margin, in two specimens strongly and in the other two weakly ;
segments of venter toward tip brown, margined with yellowish. The
cloud of fifth vein coalesces hardly, or not at all, with the cross-band.
3. < Hr y sops COStat ii* Fab.
Kingston, Jamaica ; recorded by F. Walker from Jamaica (List
Diptera in British Museum, pt. v, 1854). Best description is given
by Wiedemann (Auss. Zw., i, 198). One female September 11, from
Dr. W. H. Strachan ; and one female November 18, captured on
Museum window.
Wh at is usually supposed to be the first ring or section, of the third
joint of the antennae in Chrysops is, in this species, at least in the
above two specimens, annulated or segmented with unusual distinct¬
ness, making the third antennal joint appear as if composed of eight
annuli. The frontal callosity is of about the same rusty yellowish
color of the face, but with the posterior edge brown. In both speci¬
mens also, the outer branch of the two blackish abdominal markings
(of tergum) extends to (not on) the sixth segment, instead of only
to the fifth as Wiedemann describes. The inner branch extends to
(not on) the fourth segment. Thus the outer arm or branch of the
markings extends the width of two segments farther posteriorly than
the inner branch. The venter of abdomen has a lateral longitudinal
blackish brown vitta, beginning about middle of second segment,
continuing to posterior border of third, and more faintly on fourth
and fifth segments.
The two basal cells, and also the anal, are hyaline, except a slight
infuscation of former at proximal end, and of all at distal end. The
discal cell and last posterior contain each a hyaline spot, that of the
latter reaching the margin. First two joints of an ten me long and
very nearly equal.
AMERICAN DIPTERA.
01
Dr. Williston has identified this species from Santo Domingo (Tr.
Kan. Acad. Sci. x, 134). Macquart has recorded it from Cuba, and
Fabric! us and Wiedmann from South America. I am able to verify
Walker’s determination of it from Jamaica.
Mr. C. W. Johnson, in lift., determines it from Port Antonio,
Jamaica.
4. Cltrysops montanus O. S.
Pompanoosuc, Vt. (C. M. Weed ). One female ; first two antennal
joints reddish yellow ; third yellowish brown, the last four annuli
black. Thorax brownish, with two broad, median, grayish stripes,
and lateral more yellowish ones. The median pair of longitudinal
blackish markings on abdominal segments three and four coalesce
anteriorly, but not so broadly as those of second segment ; none of
the spots of one segment coalesce with those of any other segment.
Front femora blackish at base ; the middle knees, unlike the others,
not blackish. The cloud on fifth vein does not join the cross-band
of wings; otherwise agrees well with Osten Sacken’s description.
5. Cltrysops niger Macq.
Dixie Landing, Va., May 25 to June 22. Three females. In all
three of the specimens the first basal cell is lighter than rest of
clouded portion, in fact it is largely subhyaline. In all other respects
they agree closely with Osten Sacken’s description. Fourth posterior
cell hyaline next the intercalary vein in all.
6. Cltrysops vittalus Wiecl.
Riley County, Kansas (F. Marlatt), August ; two females. Length
7.5 mm. Frontal callosity yellowish, like the face ; no “ vestiges of
yellow spots” on sixth segment. In one specimen the venter has a
median blackish spot on third, fourth and fifth segments, in addition
to the lateral stripes ; otherwise they agree well with Osten Sacken’s
description.
7. Silvios qusulrivittatus Say.
Smith ville, So. Dakota (J. M. Aldrich) ; four females. These do
not differ from southern New Mexico specimens, except that they
seem to be a little more yellowish pollinose, and average somewhat
larger. A single female from Riley County, Kansas (F. Marlatt,
June), is also larger.
8. Tlierioplectes astutus Osten Sacken (?)
Orono, Me. (Harvey) ; one female. Differs from description as
(8)
TRANS. AM. ENT. SOC. XXII.
MARCH, 1895.
58
C. H. TYLER TOWNSEND.
follows : Palpi hardly thickened at base, pale brownish yellow ; third
antennal joint considerably excised, with a very distinct angle, seg¬
ments of annulate portion not distinct. Thorax with five narrow
gray vittae ; otherwise agrees well, but the eyes are nearly bare, and
very indistinctly, if at all, pubescent.
9. Tiierioplectes comawtes Will.
Custer County, Colorado (T. D. A. Cockerell). Three females I
refer to this species on account of the reddish first, second and base
of the third antennal joints, and the absence of any cloud on furca¬
tion of third vein. T. phcenops O. S. differs only in the black
antennae.
Placer and Santa Clara Counties, California (E. M. Ehrhorn).
Two females. Length 13 mm., I am inclined to refer to this species.
They differ as follows from Williston’s description: Face is white
with white pile, that on upper border near eyes narrowly blackish ;
palpi pale yellowish, or rather whitish, with sparse black hairs and
white pile ; basal joints of antennae pale reddish ; front is but slightly
convergent anteriorly ; first to fourth abdominal segments with an
oblique area of whitish hair on sides, all segments thinly bordered
behind with whitish hair, and abdomen with whitish hair on sides.
10. Tlivriopleotes zonal is Kirby.
Orono, Me. (Harvey) ; two females. Length 16.5 and 18 mm.
The smaller female has yellowish hair on cheeks, and the yellow bor¬
ders of abdominal segments very narrow; but the light reddish ante-
alar tubercle, brownish palpi, and narrow front indicate zonalis.
The hair of abdomen, also, except on hind borders of segments, is
black. The other specimen is more normal, but the yellowish bor¬
ders of the abdominal segments bear black hairs among the yellow,
becoming almost exclusively black on the last two or three segments.
11. Atylotns basil n. sp.
Length 14 mm. — Front moderately broad, black ; frontal callosity square, shin¬
ing, with a prolongation, above which is widened on terminal half or more. Face
blackish, cheeks with whitish hair. Antennae pale yellowish, with a brownish
tinge, annulate portion of third joint shining black; third antennal joint very
slightly excised above; palpi whitish, with black hairs; pleurae and pectus black¬
ish, with whitish hair. Thorax brown, with short yellowish hairs, scutellum
concolorous. Abdomen pale yellowish brown, with a yellowish, more or less in¬
terrupted median streak, some short whitish hair on middle of first segment and
on outer posterior margins of other segments (perhaps also along median vitta,
but if so, rubbed oft'), rest of abdomen with short black hairs. Venter more yel-
AMERICAN DIPTERA.
59
lowish. Legs yellowish, the terminal half of tarsi, and front and middle tro¬
chanters blackish, the middle and hind femora tinged with brownish. Wings
clear, costal cells very dilute yellowish.
Dixie Landing, Va., June 22. One female.
12. Tabami*» alone n. sp.
Length 10 mm. — Rather nearly allied to T. parr ulus Willist. from Santo Do¬
mingo. Front of moderate width, quite parallel. Antennae reddish yellow, the
annulate portion and angle of third joint black, with a slight tinge of black
on other joints distally; frontal callosity nearly square, pointed above, convex
below. Rest of front yellowish gray pollinose, with a brownish shade on vertex,
and another between latter and callosity; subcallus not denuded, yellowish gray
pollinose ; third antennal joint not wide at base, very narrow, but with a distinct
angle. Face with a white bloom and white pile; palpi pale yellowish tawny;
pleurae and sternum with whitish pile. Dorsum of thorax light brown, with five
yellowish gray vittse, the sides and posterior border lighter. Scutellum of same
brown, with a lighter border. Abdomen pale yellowish brown, the last three seg¬
ments darker ; all the segments with a narrow grayish hind margin, which is
dilated into a small median triangle on second to fourth. All the segments with
a vestige of a whitish pollinose spot on each side, each separate and not touching
borders of segment. Legs pale brownish yellowish, tarsi darker. Wings hyaline ;
the stigma, furcation of third vein, small cross-vein and origin of third, and cross¬
veins at distal end of second basal and discal cells, narrowly clouded ; costal cells
quite clear, except at stigma.
Bath, Jamaica (Mrs. E. M. Swain son) ; one female. Type in coll.
Townsend.
13. Tabaniis angusfi Irons n. sp.
Length 9-11 mm. — Pale yellowish brown ; no limpid spots on wings, which
show no marked cloudiness, but are only yellowish on costal portion ; first two
antennal joints reddish yellow, the third wholly black. Abdomen yellowish
brown, with hind margins of segments pale yellowish gray, enlarging into a
triangle in the middle and forming an approach to a median line ; front is very
narrow and parallel, eyes bare. Basal enlarged section of third antennal joint
distinctly angular above; palpi tawny grayish. Legs brownish, bases of tibiae
and tarsi lighter.
Jamaica. Two female specimens. One from Cinchona (5000 feet),
Jamaica, August, 1893, W. Fawcett. A small species.
This is not T. lucidulus Wlk., as it lias no limpid spots on wings.
I doubt that it is T. rufiventris Mcq., as identified by Walker, which
was from Cuba. At any rate Macquart’s description is too meagre
to be certain. It is none of the Santo Domingo or other new species
described by Willistou y in “ Trans. Ivans. Acad. Sci.” x). Macquart
described rufiventris from a male specimen, which makes the deter¬
mination of that species at the best very uncertain, and doubtless
Walker’s determination of it from Jamaica is wide of the mark.
T. rufiventris should, therefore, be dropped from the Jamaican list
of Diptera until competently identified.
TRANS. AM. ENT. SOC. XXII.
MARCH, 1895.
C. H. TYLER TOWNSEND.
60
14. Tabaiius alratus F.
Constantine, Mich., August 26 ; one male. Washington, T). C.,
May to September, one female and two males. One of the males
has the first posterior cell closed, and another has it nearly closed.
None have yellowish hind margins to wings.
15. Tabaiius oxul O. S.
Dixie Landing, Va., four females, July 6-16 ; Washington, D. C.,
two females and one male, June 30 to August 4. These specimens
all agree well in coloring with Osten Sacken’s description, in Part II
of Prodrome, of the original T. abdominalis with the first posterior
cell closed. The male and three of the females have the first poste¬
rior cell well open, but moderately coarctate ; two other females have
it narrowly open and strongly coarctate ; while the remaining female
has it very narrowly open, almost closed, in the left wing; but like
the preceding in the right wing. These specimens, agreeing so closely
otherwise and showing such variation in the first posterior cell, seem
to indicate that the latter character is of little importance even in
separating varieties. There seems to be no difference among the
female specimens in the width of the front, which is moderately wide.
Length 19-22 mm.
It is interesting to note that the females of this species are very
numerous in July on the small steam tug-boats that run on the
Potomac from Washington up to Dixie Landing. They alight on
all parts of the boat while in mid-river.
16. Tabanus ex ill var. or n. sp.
Riley County, Kansas (F. Marlatf , June. One female, 18 mm.
long, differs in having a narrower front, the first posterior cell wide
open, the third antennal joint black except extreme base, form not
so stout and thorax appearing narrower, abdomen and legs brick-
brown, and median triangles very faint, with grayish instead of yel¬
lowish hairs among the black hairs on abdomen. The hind tibiae
are less noticeably sub-ciliate, the yellowish gray pile of underside
of head and thorax less plain, frontal callosity oval and pointed
above, where it sends out the spindle-shaped prolongation. This
seems to be a distinct species.
17. Tabanus punctifer O. Sack.
Fort Selden, Dona Ana County, N. Mex. ; one female, June 13.
La Vega de San Jose, Valencia County, New Mexico ; two females,
August 4. Chaves, N. Mex. ; one male, August 6. One female (Au¬
gust 4 ) is without the clouded spot at base of second posterior cell.
AMERICAN DIPTERA.
61
LEPTIDvE.
18. Artliropeas n. sp. ?
Hill City, So. Dakota (Titus Ulke) ; one female specimen. Length
15 mm.
It differs from Loew’s description of the same sex of A. americana
in its larger size, in having the front entirely black, and in the wings
being fulvescent without black design, except subfuscous clouds along
the veins. i
In the left wing of this specimen there is a well formed extra cross¬
vein behind the discal cell, exactly opposite to the small cross-vein
and of almost the same length. It cuts off the inner corner of the
fourth posterior cell where it joins the second basal, thus making
the fourth posterior cell five-sided and forming a small triangular
sixth posterior cell immediately at the extremity of the second basal.
CONOPIILE.
19. C'onops foracliyrliynclius Mcq.
Las Cruces, N. Mex., June 18-25; two males and one female.
Length 7f-9 mm. These agree very well with Williston’s description
of obseuripennis, which is a synonym (acc. to Willist.). In addition
to the golden yellow markings of the thorax mentioned by Wi I listen,
there is an indistinct prescutellar band of that color which, however,
is obsolete in one male specimen. The whole of fifth and sixth seg¬
ments is brassy yellow dusted, and sometimes even the fourth appears
wholly so in certain lights. The yellow on tip of second and begin¬
ning of third segments is more or less silvery white pollinose.
20. Conops fronto Willist.
Las Cruces, N. Mex., June 8 and 25 ; one male and one female.
Length 8.5-10 mm. ; silvery lustre distinctly defined on sides of face ;
disc of first, third, fourth and fifth abdominal segments more or less
black ; the black of fourth, and of fifth especially, being an anterior
border ; otherwise agrees perfectly with Williston’s description.
21. Conops gracilis Will.
Las Cruces, N. Mex., June 15-28 ; three females and five females.
Length 9-11 mm. Two of the females and four of the males have
the front pure yellow, with hardly a trace of the brown in the mid¬
dle. The vertex is yellow in most of the specimens ; facial grooves
are brownish in middle at the furcation in one male and one female.
The males have none, or more or less, blackish on first, fourth and
TRANS. AM. ENT. SOC. XXII.
MARCH, 1895.
62
C. H. TYLER TOWNSEND.
fifth abdominal segments ; the females have it pronounced on these
segments, and also on third segment in two specimens. In all other
respects these specimens agree closely with Williston’s description.
22. Conops xantliopareus Will.
Riley County, Kansas (F. Marlatt), August and September ; two
males. Length 10-1 1 nun. Agrees well with Williston’s description ;
costal cells dilute yellowish. The subhyaline in (fiscal cell appears
rather to form, with that of first basal, a single rather clear stripe.
23. Physo cepliala allinis Will.
Constantine, Mich., September 6 ; one female. Length nearly 1 6
mm, Vertex pale reddish. The median ^-shaped fine of front more
blackish ; facial grooves smoky brownish in middle of each ; humeral
pollinose spots golden-yellow ; cox;e silvery. First posterior cell with
a rather small median hyaline spot on inner edge ; four costal cells
yellowish hyaline.
There is but little difference between this species and castanoptera
besides the hyaline outer portion of (fiscal cell and the hardly less
hyaline outer portion of submarginal.
24. Physo cepliala castanoptera Lw., Neue Beitriige, i, 33.
Constantine, Mich., August 31 ; one male. This is a valid species,
distinct from sagittaria Say. It will be distinguished from the latter
by the yellowish vertical callosity ; the red lateral and hind margins
of thoracic dorsum ; the red pleurae, scutellum, prescutellar marking,
and upper border of metanotum ; and by the costal cells being dis¬
tinctly clear or slightly yellowish. The red prescutellar marking is
a parallelogram joining the red border of the thorax. Coxae brown,
silvery pollinose outwardly; legs red, tarsi brownish on terminal
joints, basal half of tibiae more yellowish. Second abdominal seg¬
ment red, except a blackish patch on disc ; first segment reddish,
brownish on disc ; third segment red anteriorly. Metanotum black,
except the red upper border.
Las Cruces, N. Mex., June 4 and 26 ; one male and one female.
These differ from the Michigan specimen in having abdominal seg¬
ments 4-6 more golden pollinose, and the vertical callosity is slightly
tinged with reddish.
25. Pliyso cepliala oclireiceps Big.: Will., Biol. C.-Am., Dipt, iii, 83-4.
Las Cruces, N. Mex., June 28 ; one female. Differs from Willis-
ton’s description of P. texana as follows : Length 10.5 mm. ; third
AMERICAN DIPTERA.
63
antennal joint a little longer than first, and about one-half as long
as second ; disc of metanotum black, anterior margin red. Three
rather broad, confluent, black stripes on dorsum of thorax, the lateral
ones abbreviated before and behind, and the middle one still more
abbreviated behind ; front and hind metatarsi tinged with black on
inside edge. If this species and texana are synonymous, the former
is doubtless the typical form. It should be noted that this species
shows, though somewhat less noticeably, the triangular smooth space
on hind margin of eyes, which is so noticeable in Conops fronto Will.
The legs are hardly as thickened as usual in Physo cephala.
26. Physo cepliala tibialis Say.
Constantine, Mich., August 31 ; one male. Dixie Landing, Va.,
August 7 and 19 ; two males. The Michigan specimen has hind
tarsi red on basal joints.
27. Zoriion 1‘ulvif eons Say.
Las Cruces, N. Mex., June 4 to September 27 ; seven males and
one female. Also a male from Colorado (Gillette). Length 5.5-7. 5
mm. All the males have the abdomen reddish yellow and silvery
pollinose, the reddish interrupted stripes more or less distinct. The
female has them more distinct, and darker.
Ottawa, Canada (Harrington), June 16 ; one male. Length 5 mm.
Agrees very well with Williston’s description.
28. Zoriion splnidcns Jaenn.
Zacatecas, Mex., August 12 ; one female. Length 8 mm. It
agrees quite well with Jaennicke’s description, somewhat better with
Williston’s description of Z. leucostoma, but I believe both are the
same species. The oblique pollinose markings of second segment unite
somewhat indistinctly into a band. The anterior border of fifth seg¬
ment is shining polished reddish ; the sixth segment is only pollinose
on disc, leaving the edges polished brown, the pollinose portion being
transversely wrinkled. Extremity of abdomen polished dark brown,
enlarged. Wings light yellowish at base; only last tarsal joint (not
last two) is blackish ; arista not black.
Las Cruces, N. Mex., June 21 and August 18; two, male and
female, specimens. The male has the pairs of spots on fourth and
fifth segments better defined and more rounded.
29. Oncoinyia baroni Will.
Hanover, N. II. (C. M. Weed) ; one female. Agrees with de¬
scription. Length 5 mm. This species seems to differ from O.
loraria principally in being decidedly larger.
TRANS. AM. ENT. SOC. XXII.
MARCH, 1895.
64
C. H. TYLER TOWNSEND.
30. Oncomyia loraria Lw.
Takoma, I). C., September 20; one female. Agrees closely with
Loew’s description. The cheeks, particularly, have a silvery lustre,
also the outer surface of tibiae. Length slightly over 3.5 nun. The
tarsi are all blackish, but bases of tibiae are all slightly testaceous;
the second joint of proboscis is slightly longer than the first; and
the second joint of antennae is no longer than the third. In this
latter character it approaches O. baroni.
31. IVIyopa |»i<*( i pen u is Willist.
California (Ehrhorn). One specimen.
32. Stylogaster neglecta Will.
Riley County, Kansas (F. Marlatt), July; one female. Proboscis
not yellowish at base ; second abdominal segment yellowish above ;
third, fourth and fifth, more brownish, white pilose anteriorly; ovi¬
positor yellow at base.
(ESTRIDtE.
33. Cuterebra americaiia Fat).
San Francisco Mt., Arizona. One male taken on plateau a few
(about ten) miles to the north of the mountain, July 5. The abdo¬
men has a decided purplish blue reflection ; the scutellum is sub¬
opaque black. Thorax moderately shining; the golden yellowish
pile on pleurae contains, in its upper edge anteriorly, a rounded sec¬
tion of black pile, and a less well-defined patch of black pile touches
its lower edge; just anterior to the last is a polished black glabrous
area; still anterior to which is a third and smaller tuft of black pile.
The venter is entirely black, but shows indications of the efflorescence
in having an opaque surface containing the round, shining, purplish
spots. Length If). 5 mm.
34. Cuterebra fbiitinella Clark.
Fort Collins, Colorado (Gillette) ; one specimen, 22 mm. long.
See “ Insect Life,” v, pp. 319-320, for note on this specimeu.
35. Ciastropliilus cqui Fab.
Cinchona, 5000 feet, Jamaica (W. Harris) ; two females, August
(see Notes from the Museum, No. 73, Institute of Jamaica, Jan. 26,
1894).
AMERICAN DIPTERA.
65
TACHINIDgE s. lot.
36. Trieliopoda arcuata Big.
This species, which Bigot described from Chili, I believe to be a
synonym of T. mexicana Mcq., so far as 1 can judge from the de¬
scriptions.
37. Trieliopoda liist rio Walk.
Inverness, Fla., and southern Illinois (Robertson). One specimen
from each locality in Mr. Robertson’s collection (Robt. in litt.). I
use this name for T. trifaseiata Lw., which I have shown to be a
synonym of it (Proc. Ent. Soc. Wash., ii, 139).
38. Trieliopoda mexicana Mcq., Dipt. Ex., Sup. i, 172.
Macquart described the female as there designated. The species
differs from all those I know by having the first two antennal joints
testaceous.
39. Xj si a sp.
See “Can. Ent.,” 1881, p. 150, for note on Xysta sp. from New
Hampshire.
40. Ilyalomyia celer n. sp. J.
Eyes cinnamon -brown, closely approximated, almost touching in front of the
ocelli ; frontal vitta triangular, velvety black, with a row of black hairs on each
sde; a short bristle at each vertical angle, and a pair within ocelli directed
strongly forward ; sides of front, sides of face, face, cheeks and occiput silvery,
the occiput a little more inclining to plumbeous ; epistoma prominent, produced,
no decussate vibrissse, the facial ridges with hairs to tips of antennae ; sides of
face bare, cheeks with gray hair ; antennae black, third joint somewhat silvery,
wider than second, but little longer, rounded ; arista thickened little more than
half its length, 3-jointed, first two joints short; proboscis brownish or blackish,
longer than height of head, somewhat fleshy, labella well developed ; palpi rather
long, slender, knobbed at tip, blackish ; occiput sparsely black hairy. Thorax
and scutellum shining black, faintly silvery in some lights, humeri and pleurae
more distinctly silvery; scutellum with an apical and lateral pair of bristles.
Abdomen clothed with short black hairs, shining, black at base ; the last three
segments cinereous pollinose, black punctate. Legs black, claws and pulvilli
somewhat elongate. Wings gray-hyaline, veins pale yellowish brown ; tegulse
whitish, halteres rufous. Length 4 mm. ; of wing, 3.5 mm.
Described from one specimen. Las Cruces, N. Mex., June 18 ; on
flowers of Aster spinosus.
41. Ilyalomyia celer or n. sp. % .
Differs from H. celer 9 only as follows : Silvery, sides of front a little wider,
constricting the frontal vitta posteriorly ; epistoma not prominent, not produced ;
arista thickened a little less than half its length ; palpi not so much thickened at
tip ; hypopygium distinct, large, extruded ; claws and pulvilli rather elongate.
In all other respects like the preceding. Length slightly more than 4 mm. ; of
wing about 3.5 mm.
TRANS. AM. ENT. SOC. XXII.
(9)
MARCH, 1895.
C. H. TYLER TOWNSEND.
66
Described from one specimen. Las Cruces, N. Mex., June 3 ; on
flowers of Aster spinosus. This may be the male of H. celer.
42. f»,vniiiosoina fuliginosa R. D.
I believe this to be distinct from the European G. rotundcita L.,
after comparing three males of the latter with a series of the Amer¬
ican males. The European male has the face more silvery, and the
antenme almost entirely black. The American male has the face
with a brassy tinge, and the antenme very largely fulvous.
The European specimens were kindly sent me by Mr. v. d. Wulp
and Mr. v. Ruder.
While on the subject of the genus Gymnosoma,, it may be well to
point out that Macquart (Dipt. Ex. Sup. ii, 81) records the occur¬
rence of G. rotundata Mg. (so identified by him) from Tasmania,
saying, also, that it exactly resembles the European form. This,
therefore, gives Gymnosoma a range in the southern Hemisphere, but
in the temperate regions. It is not a tropical genus. I doubt Mac-
quart’s specific determination, however.
43. Cistogaster inimaciilata Mcq., Dipt. Ex. ii, 3, 76.
Gymnosoma occidua Wlk. and Cistog aster divisa Lw. are synonyms
of this species. Macquart and Loew described the male, and Walker
the female.
In connection with this species, there is an interesting point to be
decided. Having examined an extensive series of Cistogaster, which
I believed to belong to this one species, although there was much
variation among the females, I found that I could readily separate
the individuals of the latter sex into two constant series. As there
did not seem to be any constant differences in the males, in fact very
little variation if any, it occurred to me that there might be a case
of dimorphism among the females of this species, the normal form
being that described by Walker, and also by Williston (Trans. Am.
Ent. Soc. xiii, 296). This form has the mesoscutum shining black,
with three distinct white pollinose vittae (scutellum pollinose), the
abdomen with a median similar vitta and two or three similar cross¬
bands or fasciae, and is larger than the male. The other form of the
female approaches the male in both size and the color of the abdo¬
men, having the latter more or less red, especially anteriorly on the
sides, the rest blackish, but not showing the cross-bands or median
vitta more than in the male ; the principal difference, however, is in
the color of the mesoscutum (including the scutellum), which -is
AMERICAN DIPTERA.
07
shining black without the white pollinose vittee of the normal female,
or the brassy pubescence of the male, only white pollinose on humeri
and pleurae. The sides of front also are more black, with less silvery.
I thought to consider this a case of dimorphism, rather than to con¬
sider as distinct the latter form, which approaches the male in general
habitus. The capture of pairs in coitu will be needed to confirm or
refute the supposition.
However, Mr. Charles Robertson, of Illinois, in correspondence
with me on the above point, writes that he can differentiate the males,
and believes, therefore, that there are ttvo distinct species to be dis¬
tinguished in both sexes. This may be so, and the fact that indi¬
viduals of the same sex, in two nearly allied species, are sometimes
hardly to be separated favors this view. I quote Mr. Robertson’s
letter in full so far as it pertains to this subject, and confess that his
views seem very probable.
“ Put in a row all males haviug a longitudinal fuscous stripe on the abdomen-
In a parallel row put all males in which this fuscous stripe is wanting. Then in
line with the first set put the ‘ normal’ females and in line with the second set
put the ‘ dimorphic’ females. It will be noticed first that the fuscous stripe also
bears a pollinose stripe and indicates a connection with the normal females which
have a pollinose stripe down the abdomen. Then it will lie noticed that the first
set of males runs larger than the second, which goes to show that they are dis¬
tinct, and that they belong to the ‘normal’ females which also run larger than
the ‘ dimorphic’ females. In the large males it will be seen that the first posterior
cell varies from closed to petiolate as in the normal females, while the small males
have the cell more petiolate, as in the ‘ dimorphic’ females. Then it will be oh.
served that the bend of the fourth vein is more rounded in the small males, and
generally more angulate in the large ones. Comparing the abdomens of the two
sets of males with those of the corresponding females will show that they agree
in the distribution of pollen, which I think is very important. Probably other
points will be found, but if the specimens are arranged as I have suggested, and
each specimen in the one row compared with the one standing opposite in the
other row, I am satisfied the conclusion will be drawn that there are two distinct
species which can be separated easily, though the males are a little harder to
separate than the females, a very common thing in closely allied species.
“I have considered that black specimens of the ‘dimorphic’ females were the
same as C. pallcmi Towns., but the small species is really a redder one than the
large.”
In case it is shown that there are two species in the above forms,
Macquart’s name will still stand for the species which possesses the
“normal” females, and Walker’s name will still remain a synonym
because he described the “normal” female. Loew’s name, however,
can be applied to the species possessing the “ dimorphic” females,
which will thus be known as C. divisa.
TRANS. AM. ENT. SOC. XXII.
MARCH, 1895.
68
C. H. TYLER TOWNSEND.
44. Ocj plera eiichcnor Walk.
Illinois (Forbes); twenty specimens, measuring 8-10.5 mm. Of
0. dosiades Walk., there were ten specimens from same locality,
measuring 5-7.5 mm., and all normal in size and color. Though it
is difficult to separate these two forms, yet it hardly seems probable
that they are all the same species. Dr. E. Giglio-Tos doubtfully
unites them in his recent work on Mexican Diptera (Ditt. Mess., iii,
p. 1 ). The differences in size are too great, I believe, to admit of
this view.
45. Ilcni.vria an rata R. D.
I have four specimens from Illinois (Forbes), and one from State
of Washington (Williston). Two of the Illinois specimens are
males and two females. The Washington specimen is a female.
The female is the smaller, has the shorter claws and pulvilli, and the
pale yellow markings of the abdomen are not so heavy. The front
is about one-third the width of the head in both sexes. R. D. says
that, in H. aurata, the posterior half of the second segment is pale
testaceous. In the above five specimens the second segment is broadly
pale yellow on the sides, the yellow being separated by a median
black vitta which broadens out and forms the hind margin of the
segment. The pale yellow anterior fascia of third segment is very
narrow and interrupted in the middle in the females, but is much
broader, and with a tendency to become entire anteriorly in the males.
1 consider the above specimens, however, the same as Desvoidy’s
species, which is doubtless the only species of this genus in North
America or elsewhere.
PSEUDOU YSTRICIA Brauer and v. Berg.
General characters. — Robust species with spiny macrochsetse, hav¬
ing the facies of Dejeania, but easily distinguished by the hairy eves.
Belongs to the Hystriciime. Head quadrilateral in profile ; front of
male twice as broad before as at vertex, more than one-third width
of head in middle, prominent in profile, face nearly twice as wide ;
frontal bristles strong, descending about as low as base of third an¬
tennal joint, vertical bristles and about next four pairs directed
backward, rest inward and decussate ; no orbital bristles in male.
Face a little receding, epistoma very prominent ; facial depression
more than one-half width of face, oval in outline, shallow ; facial
ridges bare, except several bristles next vibrissse, constricted below ;
sides of face wide, clothed with some fine long hair ; cheeks very
wide, fully three-fourths of eye-hight, hairy posteriorly ; vibrissse
strong, inserted a good distance above oral margin. Eyes quite
AMERICAN DIPTERA.
G9
thickly hairy. Antennae shorter than face, second joint elongate,
third about one and one-half times as long as second, only moder¬
ately wide, convex before, straight behind ; arista microscopically
pubescent, thickened most of its length, 3-jointed, first two joints
very elongate. Proboscis fully as long as bight of head, rather slim,
elongate, labella developed ; palpi long, spoon-shaped, extending
more than one-third their length beyond the epistoma. Thorax
much wider than head; scutellum and abdomen densely set with
spiny macrochsetse. Abdomen much wider than thorax, rounded
and swollen. Legs moderately long, tibiae spiny ; claws and pulvilli
of male very elongate. Wings longer than abdomen, without costal
spine, third vein with some weak bristles at base ; apical cell widely
open, ending well before tip of wing; fourth vein curved suddenly
at a right angle, apical cross-vein strongly bowed in at its origin ;
posterior cross-vein sub-sinuate, very oblique, nearer to bend ot fourth
vein ; both cross-veins nearly parallel with hind border of wing.
Type, Hystricia ambigua Macq.
46. Psemloliystricia ambigua Mcq. V
Eyes and frontal vitta brown ; sides of front cinereous, with black hairs among
frontal bristles, and gray hairs along the vitta ; face and cheeks entirely cream-
colored. sides of face with long and tine gray hair, cheeks with gray hair poste¬
riorly ; antennae and arista black, the second antennal joint with a stout bristle
before; proboscis shining black, brown at base and tip, palpi golden -yellow,
brownish toward base: occiput cinereous, thickly clothed with yellowish gray
hair. Thorax brassy, clothed with macrocheetse and grayish hair, pleurae golden
with a bunch of long yellowish hair, mixed with which are black bristles : scutel¬
lum pale flesh-colored, densely set with macroclnetfe, the anterior lateral portion
only being without them : hypopygium considerably exserted, black, hairy. Legs
black, front femora golden on outside, front and middle femora with golden gray
hair, femora and tibiae bristly; claws and pulvilli very long, orange-yellow.
Wings more or less smoky golden, yellow at base and narrowly along costa ; tegular
nearly white, with yellowish borders; halteres golden-brown. Length ot body,
14 mm.; of wing, 13 mm.
Described from one specimen ; Guanajuato, Mexico ( Dr. Alfredo
Duges).
47. Psemloliystricia exilis Towns.
Cichona, Jamaica; several specimens from Mr. W. Fawcett, Au¬
gust and September.
48. Saumlersia bicolor Will.
San Francisco Mt., Arizona ; on large yellow composite in spruce
zone, one female specimen, July 15. Recorded from New Mexico,
Arizona, California, Washington. I very much suspect that van der
Wulp’s S. bipartita is the same species. It is described from Durango
Mexico, 8100 feet, and Cache, Costa Rica. Colorado (Gillette) ; one
specimen.
TRANS. AM. ENT. SOC. XXII.
MARCH, 1895.
70
C. H. TYLER TOWNSEND.
49. Saunriorsin signifcru Will.
Colorado (Gillette) ; one specimen.
50. Jurinia algous Wd.
San Francisco Mt., Arizona; found from base to summit. Most
abundant in spruce zone ; more in fir zone than at base ; sixteen
specimens (three coll, by Cordley), July 15 ; in coitu this date. Two
from Hart Little Spring, July 14. Of these eighteen specimens,
twelve are males and six females ; the male may be known by the
elongate claws, and the exserted hypopygium. Two other secondary
sexual characters are quite constant : the occipital pile of male is
more clearly light brassy yellow, that of female deeper or more of a
butt-vellow ; and the front of the male is more silvery-white pollinose,
that of female being more of a golden-yellow pollinose. This species
ranges from Colorado and Wyoming through Dakota, Michigan,
Canada and New York to New Hampshire and Maine.
Colorado (Gillette) ; one specimen bred from Hadena lignicolor.
51. Jurinia apicifera Wlk.
Colorodo (Gillette) ; one specimen bred from Clisiocampa califor-
tiica. This specimen has the face somewhat less golden than speci¬
mens from Michigan. Northern specimens of Tachinidse seem often
to have the colors more deeply marked than those from more southern
localities.
52. Jurinia liystrix Fab. var. ?
Colorado (Gillette). A single specimen seems near to J. hystrix,
and may perhaps be considered a variety of that species.
53. Jurinia n. sp. (?) aff. lateralis Mcq.
Differs from female of lateralis as follows : First joint of arista nmch longer,
about as long as second joint, distinct bristly hairs on sides of face below near
eye margin ; front, thorax and abdomen very similar in all respects, even in¬
cluding the orbital and frontal bristles, but general form not quite so widened,
and anal segment without the yellowish silvery efflorescence, wholly shining
iustead. Abdominal macrochjetse apparently quite the same; third antennal
joint dark brown. Length hardly 10 mm.
San Francisco Mt., Arizona; one female near base of mountain,
July 14 (Cordley). This is near, but very distinct from J. lateralis ,
with which it might easily be confused from its great similarity.
A male specimen, from Hart Tuttle Spring, near the base of the
mountain, July 14, is longer than the preceding, but is sufficiently
like it to be in all probability the same species. It agrees with it in
all the characters above outlined in contradistinction to lateralis, ex¬
cept, of course, in the orbital bristles, but the antennse are wholly
pale reddish including the third joint.
54. Blepliarspexa bieolor Mcq.
Colorado (Gillette) ; two specimens.
AMERICAN DIPTERA.
71
55. Blepharipeza jurinioides u. sp.
Length 13 mm— Stout and unusually spinose, with the facies of Pseudohystritia
or Jurinia, but distinguished by its ciliate hind tibise ; front black, partly concealed
by silvery pollen ; frontal vitta spot soft dark brown ; facial depression, sides of
face and cheeks, silvery polliuose. Antennas brown, the second joint moderately
short, the third joint very long, nearly linear, reaching almost to epistoma ; palpi
brownish, yellowish apically ; posterior orbits and occiput silvery polliuose.
Thorax brownish black, thinly silvery polliuose, leaving five narrow vittse, the
three inner ones abbreviated behind, the outer ones interrupted at suture; scu-
tellum and abdomen shining black, densely spinose, spines deep black. Abdomen
broad and rounded oval, the surface with a faint metallic bluish shade. Legs
dark or blackish brown, femora silvery outside, hind tibia> black ciliate, pulvilli
yellowish. Wings hyaline, blackish at base ; tegubc fuscous.
Cinchona (5000 feet), Jamaica (W. Faucett) ; one female. Type
in coll. Townsend.
56. Belvosia ferruginosa n. sp.
Length nearly 12mm. — Eyes green in life; front brownish red on each side,
more or less silvery polliuose ; frontal vitta soft brownish golden ; facial depres¬
sion, sides of face and cheeks, rich silvery white polliuose, cheeks hairy. Au-
tennte dark brown, the third joint linear and nearly three times as long as second ;
arista brown ; palpi brownish black, yellowish on tips ; vertex somewhat yellow¬
ish ; posterior orbits silvery white. Thorax and scutellum brownish red, the
former thinly polliuose before, leaving the beginnings of four narrow vittse ; pos¬
terior corners of mesoscutum yellowish, also a little yellowish behind humeri.
Abdomen of a beautiful iron-rust yellow, in the first and second segments the
yellow shade predominating, in the third and fourth the iron-rust shade; first
segment brownish under scutellum ; a median pair of macrochsetse on first and
second, a marginal row on third and fourth segments. Legs soft blackish, pul¬
villi and claws yellow. Wings uniformly pale fuscous; tegulse same color.
Bath, Jamaica (E. M. Swainsoii) ; bred from a lepidopterous
chrysalis ; one male. A beautiful species. Type in coll. Townsend.
57. Ecliinomyia liaemorrlioa v. d. Wulp, Williston.
San Francisco Mt., Arizona. Quite well up the mountain, prob¬
ably in spruce zone. Three males and two females, July 15; also
one male near base (Cordley), and another male at Hart Little
Sprinu', both July 14. I am quite satisfied that this is the species
referred by Williston to hcemorrhoa. In my specimens the third
antennal joint is larger in the male, the abdomen (of male) is dark
red on the sides and with the anal segment largely blackish shining.
The anal segment of female has the silvery efflorescence, but that of
the male is quite uniformly without it, only exceptionally showing
traces of it. There is a very small cloud on anterior cross-vein in
the males, not apparent in the females.
58. Ecliinomyia iterans Walk.
San Francisco Mt., Arizona ; in spruce zone ; three females ( one
coll. Cordley), July 15. This species belongs in the subgenus Pele-
MARCH, 1895.
TRANS. AM. ENT. SOC. XXII.
72
C. H. TYLER TOWNSEND.
teria of R. I )., by virtue of its having two macrochaetae or bristles
on side of face near lower margin of eyes. The subgenus Echinomyia
s. str. is without these bristles.
59. F.cliinoin.yia tliomsoui Willist.
San Francisco Mt., Arizona; in spruce zone. Three females (one
coll. Cordley), July 15; also one female, Hart Little Spring, July
14; and one male, Cocanini Plateau to the north of the mountain,
July 6.
Colorado (Gillette) ; one specimen bred from “ unknown larva on
clover.”
(JO. Erliiiioinj ia n. sp. ?
La Vega de San Jose, Valencia County, New (Mexico ; two speci¬
mens, male and female, August 4. Flagstaff, Ariz., July 2, a smaller
female. This species is very similar to E. ( Peleteria ) iterans Wlk.,
but may be distinguished not only by the absence of the two bristles
on sides of face below near eye margin, which pronounces it an
Echinomyia s. str., but also by the more cinereous or grayish pol-
linose prothorax. In E. iterans, the prothorax is of a more shining
brassy pollinose shade, and the fine thoracic lines are more distinct.
In the present species the first two joints of antennae, and sometimes
the base of third, are of a lighter and more dilute reddish than in
E. iterans. The abdomen is marked the same, except that the anal
segment seems to lack, as a rule, the silvery pollinose sheen.
61. Atropliarista Towns.
This genus should undoubtedly be subordinated to Melanophrys
Willist., and A. jurinoides referred to that genus. It does not belong
in the Hystriciinae, but in the Taehinime.
62. Il.yst ricliia aldriHii Towns.
This is probably a Nemonea. It comes near X. obscurella v. d.
AVulp, but differs in having only four thoracic vittae, and the ab¬
dominal segments with both marginal and discal macrochaetae.
63. <»onia sagax Towns.
Illinois (Forbes) ; one specimen. It has the antennae not so bright
orange, but of a duller color. Length 9.5 mm.
64. Ar"j roj)li jliix sp.
Colorado (Gillette). A specimen, apparently belonging to this
genus, was bred from Philampelns achemon.
65. Kiplio I>Ia gia auoniala Towns.
What I take to be a male specimen of this species (southern Illi¬
nois, Robertson) has the abdomen slightly narrowed, with the pollen
more of silvery than a cinereous shade.
AMERICAN DIPTERA.
66. Cneplialia sp.
Mesilla Valley of the Rio Grande, New Mexico. A characteristic
species of this genus is numerous in individuals about Las Cruces.
67. Trichophora sp.
Six specimens from southern Illinois (Robertson) I refer to this
genus. Mr. v. d. Wulp remarks on the doubtful distinctions between
this genus and Cuphocera (Biol. Cent.-Amer., Dipt, iii, 35-36). The
two genera seem well marked. Cuphocera, differs by its more elon¬
gate abdomen and general narrower form, and should include C.
ruficauda v. d. W., which has an elongate abdomen. The present
species of Trichophora has a short, stouter abdomen, and general
much stouter form. It differs from Echinomyia only in the entire
absence of palpi, the third antennal joint being about as long as the
second, and the frontal bristles descending in a double row below
near the eye margin the so-called genal bristles). The second and
third abdominal segments have only marginal macrochsetse.
The character of the comparative length of the second and third
antennal joints does not seem to be rightly understood in the three
genera Trichophora, Cuphocera and Echinomyia. The last has the
third joint shorter than the second. Cuphocera, according to the
type species, should have the same characteristic, but specimens which
I identify as C. macrocera Wd. and C. ruficauda v. d. W. have the
third joint fully as long as the second, or a little longer. These two
species, moreover, agree in their general elongate form, very notice¬
able in the elongate abdomen, and thus would be readily separated
from the shorter, stouter species of Trichophora. The species of
Trichophora above referred to may be distinguished at once from T.
nigra Mcq. by having two bristles on the sides of face near lower
margin f eyes, instead of one as in that species ; and from T. analis
Sch. by the anal segment being wholly rufous, and the other segments
blackish, the sides of the anal segment in T. analis being broadly
black and the rufous extending on sides of second and third segments.
68. Tachina rlisiocampre Towns.
Colorado (Gillette) ; one specimen bred from I)u» a is archippus.
The front is less golden than in the type from Maine. Sides of ab¬
domen more distinctly red ; scutellum more generally rufous. Another
specimen, which I refer here with some doubt, was bred by Prof.
Gillette from Clisiocarnpa californica.
69. Tachina sp.
Colorado (Gillette). A species with a IJlagia-\i\te facies. One
specimen bred from Plusia brassicce.
TRANS. AM. ENT. SOC. XXII.
(10)
MARCH, 1895.
74
C. H. TYLER TOWNSEND.
70. Tiicli ina sp. (s. str.)
Colorado (Gillette). One specimen reared from a larva of Copto-
cycla. This is probably a new species of Tachina (in the narrow
sense).
71. Miltogramma cineraseens Towns.
A specimen from southern Florida (Robertson) agrees with the
types of this species in all respects, except that the face and cheeks
are a little less deeply golden or brassy pollinose, but have somewhat
more of a silvery shade. I will not venture to describe it as distinct.
72. Hiltogramiiia trilineata v. d. W.
Two male specimens from southern Florida (Robertson), collected
February 16 and March 10, I refer to this species. They seem to
have the abdomen slightly more silvery than a specimen from southern
Illinois, but are otherwise identical.
These two species both differ from Schiner’s description of Milto-
gramvia by not having the first abdominal segment shortened, and
by having the frontal bristles moderately strong. From his descrip¬
tion of Macronychia they differ in their smaller size, and the abdomen
being rather short conical. They agree with Eii macronychia in hav¬
ing one row of frontal bristles, and the orbital bristles present in both
sexes. The front is about one-fourth width of head (in both sexes?).
73. K u iliac roily cilia decerns Towns.
Seneca Ranch (north of Springerville), Arizona; one male, June
25. Also one female, Zuni River, Arizona, July 28.
74. Eumacronycliia elita Towns., Trans. Am. Ent. Soc. xix, p. 100.
This species bears much superficial resemblance to the genus Gym-
noprosopa Towns., more than does E. decern. The following differ¬
ences may be pointed out between it and that genus: Front fully
one-third width of head in male, a little more prominent ; frontal
bristles weaker, more nearly equal ; two orbital bristles in male.
Facial depression about one-third width of face in male ; sides of
face rather wide ; cheeks wide, nearly one-half eye-height. Eyes
descending little over two-tliirds as low as oral margin ; second an¬
tennal joint rather elongate, third joint about twice as long as second ;
proboscis about as long as height of head, not stout ; scutellum with
two lateral pairs of macrochsetse, but with apical decussate pair
wanting. Abdomen cylindro-conical, first segment not shortened ;
hypopygium exserted ; pulvilli of male elongate, claws short ; fourth
vein with a quite distinct wrinkle at bend, apical cross-vein only
slightly concave, apical cell narrowly open and terminating well
before tip of wing.
AMERICAN DIPTERA.
iO
75. Masicersi sp.?
Southern Illinos (Robertson) ; one specimen. This differs from
the genus Masicera in its elongate, rather narrowed abdomen with
the macrochsetse only marginal, in the general elongate form, and in
the frontal bristles descending on sides of face nearly as low as the
vibrissa). It will probably form a new genus.
76. Olivieria n. sp.
Southern Illinois ( Robertson 1 ; one male I refer to this genus. It
agrees with Schiner’s description of Olivieria, in all points except
following : Eyes very distinctly hairy, instead of thinly so ; proboscis
a little longer than height of head, palpi a little thickened terminally ;
first abdominal segment hardly shortened ; apical cell open.
77. Nemorsea n. sp.
Southern Illinois (Robertson) ; three males and two females. This
species differs from N. aldrichi (descr. as a Hystricia) in having the
anal segment rufous, and sides of other segments frequently so as
well. It differs from N. variegata v. d. W. in having the third an¬
tennal joint hardly longer than the second. From the description
of N. leucanice Kirkp., it differs only in the same character — the
length of the third antennal joint, which in that Species is said to be
two and a half to three times as long as second. The an ten me vary
from wholly black to black with the second joint clear rufous.
78. Nemoriea n. sp.
Colorado (Gillette) ; one bred from Ecpantheria permaculata.
79. Mystacella n. sp.
Colorado (Gillette) ; one specimen bred from Acronycta ameri-
cana (?) ; and another from Pyrrharctia Isabella.
80. IS y pliant rophaga hypliantriie Towns.
Colorado (Gillette) ; one bred from Vanessa milbertii.
81. Hypliantropliaga n. sp.
Colorado (Gillette) ; two specimens bred from Vanessa milbertii.
This is very near to, but different from, H. hyphantrice Towns., and
is probably a new species.
82. JBxorista tlieclarum Scudd.
E. chrysophani Towns., “ Ent. News,” 1891 (December), pp. 197-
198, is a synonym of this species.
MYOBIA Rob. Desv.
General characters. — Yellowish species, considerably resembling
Clytia, but readily distinguished by the very large palpi. Belongs
in Thryptoceratinse. Head nearly rectangular in profile ; front
rather prominent, about one-third width of head, frontal bristles
TRANS. AM. ENT. SOC. XXII.
MARCH, 1895
76
C. H. TYLER TOWNSEND.
descending almost to base of third antennal joint ; vertical bristles
strongest, and, with next two pairs, directed backward, others inward ;
two orbital bristles in the female. Face nearly perpendicular, epis-
toma prominent ; facial ridges bare ; sides of face not wide, bare ;
cheeks about as wide as one-third the eye-height, bare ; vibrissse in¬
serted almost on oral margin. Eyes bare. Antennae not quite as long
as face, second joint a little elongate ; arista pubescent, thickened on
basal half, indistinctly 3-jointed, second joint not elongate ; proboscis
rather slender, considerably longer than height of head, labella con¬
siderably developed ; palpi unusually large, club-shaped, elongate,
extending one-third their length beyond the epistoma, much thick¬
ened at tip. Thorax about as wide as head ; scutellum with a sub-
apical pair of macrochsetse, which are not decussate, and a lateral
pair, besides several very weak ones. Abdomen a little wider than
thorax, broadly rounded, first segment bar ily shortened ; macrocluetm
only marginal. Legs somewhat elongate, not very bristly. Wings
longer than abdomen, without costal spine, first vein spined its whole
length, third vein spined as far as the small cross-vein ; apical cell
ending in the apex of the wing, open ; fourth vein bent at a curve,
without stump or wrinkle ; hind cross-vein a little nearer the bend
of the fourth vein, apical cross-vein slightly concave. Type, M.
diadema Wd.
83. lljobiii
. coloradeusis n. sp. — Oval, thorax slightly coarctate at base, head and
thorax yellow, the latter darker at middle of base, elytra piceous, on each a
slightly oblique rhomboidal spot one-third from base, a triangular spot emarginate
in front, one-third from apex. Head very sparsely punctate. Thorax scarcely
narrowed in front, sides feebly arcuate, surface sparsely punctate, a fine basal
marginal line. Elytra much more distinctly punctate, but not closely ; prosternal
plate rather broad, flat, coarsely punctured; metasternum coarsely punctured at
the sides, the mesocoxal line arched joining the suture one-third from the apex.
Abdomen piceous, not closely punctate, metacoxal line not joining the suture,
but parallel with it. Legs yellow. Length .06 inch. ; 1.5 mm. PI. I, fig. 2.
I have seen but one specimen of this species. The elytral mark¬
ings resemble some of the varieties of guttulatus, but the present
species has a yellow head and thorax. There are six distinct ventral
segments.
Hab. — Garland, Col. (Schwarz).
S. amabilis Lee. — Oval, not very convex, piceous, or almost black; head,
sides and apex of thorax yellow, elytra with an anterior, oblique, irregular fascia,
composed of two spots united by a narrow isthmus, apex yellow, curving inward
one-third from apex forming a lunule, inside of which is an irregular spot. Head
almost smooth. Thorax scarcely narrower in front, sides feebly arcuate, surface
finely sparsely punctate, a fine basal marginal line Elytra moderately coarsely,
not closely punctate ; prosternal plate parallel, margined at tbe sides, punctate at
middle; metasternum closely punctate at the sides, mesocoxal line joining the
suture nearly at middle. Abdomen piceous, paler at sides and apex, composed
of six segments, the terminal not prominent ; metacoxal plate shorter than the
segment, the line curved slightly forward at its outer end. Legs yellow. Length
.06 — .08 inch. ; 1.5 — 2 mm. PI. I, fig. 8.
The markings of the elytra are not greatly variable, although at
times broadened ; they, however, preserve the type above described.
Hab. — Louisiana.
NORTH AMERICAN COLEOPTERA.
95
S. guttulatuM Lee — Oval, sides of thorax and elytra nearly continuous
black, each elytron with an anterior oblique spot composed of two, which may
be joined or separate; at posterior third a transverse band not touching the side
or suture, apex indefinitely paler. Head and thorax sparsely and very finely
punctate, the thorax with fine basal marginal line; prosternum punctate, without
marginal line; metasternum closely punctate at the sides, the mesocoxal line
joining the lateral suture one-third from the coxa. Abdomen moderately closely
punctate, the metacoxal line curving outwardly not joining the suture, but par¬
allel with it. Legs piceous. Length .06 — .08 inch. ; 1.5 — 2 mm. PI. I, figs. 13, 14.
This species varies in the extent of its elytral markings. The head
may be yellow, and also the anterior angles of the thorax. The ab¬
domen has six distinct segments.
I lab. — California, Alameda County, and the vicinity of San
F rancisco.
Group C.
The metacoxal line in the species of this group passes in an ob-
licpie curve toward the first suture and then gradually curves forward,
but is not complete. The mesocoxal arc curves forward
and joins the suture near the front angle of the met-
episternum. The prosternal elevated lines are usually
entire and distinct. The abdomen has but five segments,
but in some females a sixth is visible. The species are not numerous,
and may be thus separated :
Elytra yellowish testaceous.
With numerous small black spots . nelMiloSUS.
Without spots . . . Plielpsii.
Elytra black, with ante-median obliquely oval red spot . circumspectus.
Elytra black, with large, apical, pale area . opaculuM.
Elytra entirely black.
Abdomen more or less yellow, prosternal lines entire . ainericitnus.
Abdomen black, prosternal lines short . caiirinas.
S. nebnlosas Lee. — Oval, outline nearly continuous, about one-fourth
longer than wide, moderately convex, above pale rufo-testaceous, the elytra with
small, irregularly placed spots, body beneath black. Head sparsely punctate.
Thorax slightly narrower in front, very sparsely finely punctate, basal marginal
line nearly obsolete. Elytra moderately coarsely, not closely punctate; proster¬
num narrowed in front, each side with an elevated line ; metasternum closely
punctate at the sides, the mesocoxal line forming a nearly complete arc. Abdo¬
men sparsely punctate, the metacoxal line arched, distant from the first suture,
incomplete externally. Legs testaceous, femora sometimes darker. Length .07 —
.09 inch. ; 2—2.25 mm.
Iii the males the fifth ventral is broadly, but slightly emarginate ;
in the females a sixth segment is very distinctly visible.
In some specimens the disc of the thorax is clouded with piceous.
Hah. — California, Alameda County and Colorado River.
TRANS. AM. ENT. SOC. XXII.
APRIL,. 1895.
96
GEO. IT. HORN, M. D.
S. Phelpsii Crotch. — Oval, outline nearly continuous, very little longer
than wide, moderately convex, rufo-testaceous. underside never entirely black.
Head and thorax sparsely punctate, the latter narrower in front, sides feebly
arcuate, basal marginal line indistinct. Elytra moderately, not closely punctate,
the punctures coarser and finer intermixed ; prosternum narrower in front, a fine
elevated line each side; metastemum closely punctate at sides, mesocoxal line
curved, joining the suture behind the apex. Abdomen less closely punctate, the
metacoxal line arcuate close to the suture, incomplete externally. Legs rufo-
testaceous. Length .08 inch. ; 2 mm.
The mesosternum is always piceous, the abdomen may be piceous,
except at apex, or may be entirely pale.
This species resembles nebulosus, but the two differ in the meta¬
coxal arc. Here it approaches within a fifth of the length of the
segment to the first suture, and in nebuloms is one-third from the
suture. The abdomen is similarly formed in the two species.
Hub. — British Columbia, Oregon, northern California and Nev.
S. circumspect us n. sp. — Broadly oval, convex, black, each elytron with
an oval orange spot, in front of middle, placed slightly obliquely, the outerside
truncate. Head moderately closely punctate. Thorax narrowed in front, sides
moderately arcuate, disc rather closely not coarsely punctate, basal marginal line
distinct. Elytra rather coarsely punctate, closely but not densely; prosternum
punctate, with elevated, convergent lines; metasternum closely punctate at the
sides, mesocoxal line arcuate, joining the suture near the front. Abdomen closely
punctate, metacoxal line arcuate, not reaching the suture, incomplete externally:
femora piceous, tibia; and tarsi yellow. Length .10 inch. ; 2.5 mm. PI. II, fig. 4.
rflie abdomen has five segments. This species is easily known,
being the only one in our fauna with the incomplete, but arcuate
metacoxal line having an elytral spot.
Hub. — Lookout Mountain, Tenn., Louisiana (Like).
S. opaculus n. sp. — Oval, convex, very little longer than wide, margin
continuous, piceous, head and sides of thorax broadly yellow, elytra with an
apical pale space occupying a fourth, the anterior edge on each side convex in
front. Head sparsely punctate. Thorax narrower in front, sides arcuate, disc
sparsely finely punctate, basal marginal line indistinct. Elytra moderately closely
and more coarsely punctate than the thorax: prosternum punctate, the lateral
elevated lines indistinct; metasternum coarsely and closely punctate at the sides,
the mesocoxal line joining the suture a little in front of the middle. Abdomen
yellow at sides and apex, composed of five segments, closely punctate, the meta¬
coxal line touches the suture and curves feebly forward. Legs yellow. Length
.10 inch. ; 2.5 mm.
This species 1ms considerable superficial resemblance to Bnillei,
but is darker, differing especially in the form of the metacoxal line,
which is a complete arc in Bnillei. There is a distinct epipleural
fovea for the reception of the knee of the middle leg.
One specimen, Colorado.
NORTH AMERICAN CO LEO FT ERA.
97
S. americanus Mills. — Broadly oval, convex, color variable, thorax usually
orange with a central piceous space, elytra narrowly tipped with red. Head and
thorax sparsely punctate, the latter narrowed in front with feebly arcuate sides,
basal marginal line distinct. Elytra coarsely and moderately closely punctate ;
prosternum with convergent elevated lines, which are variable in distinctness;
metasternum rather coarsely and closely punctate at the sides, the mesocoxal line
arched, joining the suture near the front. Abdomen more or less yellow, mod¬
erately closely punctate, the metacoxal line arcuate, approaching very close to the
first suture. Legs«usually yellow, but varying to black. Length .08 — .12 inch. ;
2 — 2.5 mm.
The abdomen has but five segments, the last two of the male feebly
broadly emarginate. Usually the head is yrellow, specimens are not
rare black. The thorax may be almost entirely yellow, usually with
a median piceous space ; sometimes the angles only are yellow, while
several specimens before me are entirely black. The abdomen is
usually yellow, piceous at middle and base, but the entire color may
be black. The legs vary from yellow to black.
I lab. — New York southward to Florida and Texas, westward to
Illinois.
S. caurinus n. sp. — Broadly oval, convex, outline continuous, entirely pi¬
ceous, sometimes with the head and sides of thorax yellow. Head sparsely punc¬
tate. Thorax narrower in front, sides feebly arcuate, very finely sparsely punc¬
tate, basal marginal line not visible. Elytra moderately coarsely, not closely
punctate, the lateral elevated lines short ; metasternum at sides closely, roughly
punctate, the mesocoxal line joining the suture one-third from the front. Ab¬
domen black, with five segments, closely punctate, the metacoxal line very nearly
touching the suture, curving to front and evanescent. Legs red. Length .08 —
.10 inch. ; 2—2.5 mm.
This species varies from entirely piceous to those having the head
and a variable extent of the sides of the thorax reddish yellow.
The entirely black forms resemble tenebrosus, but differ in the form
of the metacoxal arc.
Hab. — Washington, Oregon (Koebele) and Cal. (Owens Valley).
Group D.
The metacoxal line in this series forms a complete arc beginning
at the inner edge of the posterior coxal cavity, sometimes touching
at the apex of the curve the first suture, ending nearly
at the anterior angle of the segment. The prosternal
lines are well marked and entire in all the species, usually
convergent to the front. The mesocoxal arc joins the
met-episternal suture near the front angle. The abdomen has five
segments, but rarely specimens show the sixth.
TRANS. AM. ENT. SOC. XXII.
(13)
MAY, 1895.
GEO. H. HORN, M. I).
!)8
The species of this group nearly equal in number those of all the
preceding groups together, and present the greatest difficulty in their
separation. The greater number of the species had been described
from very limited material, and the characters made use of are now
seen with more specimens and species to have very little value. On
the other hand it has never been found necessary to use the secondary
sexual characters for the first time.
The following table will assist in the separation of the species:
Form broadly oval, outline at humeri continuous . 2.
Form oblong, thorax narrower at base than the base of elytra . 12.
2. — Entirely testaceous above . pollens.
Elytra in great part yellow, with merely an elongate-triangular sutural area
black . ductus.
Elytra black, with discal defined spot . 3
Elytra pale at apex, either merely bordered with yellow, or with an apical
area of that color . ••••... .4
Elytra entirely black . 7.
3. — Elytral spot antemedian, nearly oval, anterior angles of thorax yellow.
pad ficus.
Elytral spot very oblique, thorax black . si minis.
Elytra! spot post-median, thorax yellow at sides . flcbilis.
4. — Elytral pale apex wide, or even large . 5.
Elytra narrowly pale at apex . 6.
5. — Thorax with median black spot.
Apical spot not larger than a fifth the length of the suture- I'm lorn us.
Apical spot fully a third of superficial area . Itrullci.
Thorax entirely yellow.
Apical area large . semi ruber.
6. — Thorax partly black.
First ventral of male with a median smooth area surrounded by short
pubescence . punciicollis.
First ventral of male without pubescence . collaris.
Thorax entirely yellow . . cervical is.
7. — Species larger .08 — .10 inch . 8.
Species small .00 inch . 11.
8. — Metacoxal arc much shorter than first segment . . abbreviaf us,
Metacoxal arc nearly as long as the segment . 9
9. — First ventral of male with a tubercle at middle of posterior edge, finely
pu bescen t . marginieull is.
First ventral male not tuberculate . 10
10. — Last segment of male feebly impresso-emargiuate.
Sides of thorax more or less yellow . arilclio.
Thorax entirely black . f cnchrosus.
Last segment of males deeply impresso-emarginate . lacustds
11. — Metacoxal arc scarcely as long as half the segment . punctual.
Metacoxal arc nearly as long as the segment.
Thorax distinctly punctate; pubescence recumbent . nan us.
Thorax smooth; pubescence erect . utilis.
NORTH AMERICAN CO LEO PT ERA.
99
12.- — Elytra relatively coarsely punctured, black with a spot of variable size nearly
central on each elytron, rarely absent . pinictuf 11*.
Elytra very indistinctly punctate, almost entirely reddish yellow, base and
suture alone dark . I’oniferariun.
S. pillions Lee. — Rather broadly oval, margin slightly interrupted, convex,
rufo-testaCeous above, beneath black, except the last three segments of abdomen,
legs pale. Head very sparsely punctate. Thorax narrower in front, sides ar¬
cuate, surface finely evenly punctate, basal marginal line distinct. Elytra mod¬
erately, finely and not deeply punctate ; prosternum punctate, the elevated lines
short, posterior; metasternum at sides coarsely, closely punctate, mesocoxal line
arcuate, joining the suture near the front. Abdomen coarsely and closely punc¬
tate, the metacoxal line forming a complete arc very nearly as long as the first
segment. Length .06 — .08 inch. ; 1.5 — 2 mm.
The abdomen has five segments only. This species resembles
Phelpsii, which, however, has an incomplete metacoxal arc. The
first ,two ventral segments and the middle of the third are black,
the rest of the abdomen yellow.
Hub. — California, San Francisco, Alameda, Los Angeles, Yuma.
American Fork Canon, Utah, Final Mountains, Ariz.
S. cinctus Lee. — Broadly oval, convex, outline continuous, beneath piceous,
above in great part reddish yellow, the thorax with a basal piceous spot, which
continues on the elytra gradually narrowing, reaching more than three-fourths
the length of the suture. Head not densely punctate. Thorax narrower in front,
sides feebly arcuate, basal marginal line distinct, surface finely and equally punc¬
tate. Elytra much more coarsely and deeply punctured than the thorax; pro¬
sternum punctate, the elevated lines convergent to the front ; metasternum at
sides coarsely and closely punctate, the mesocoxal line arcuate, joining the suture
near the front. Abdomen closely punctate, the metacoxal line entire not quite
reaching the margin of the segment, the outer end reaching the anterior angle
of the segment ; femora piceous, tibiae and tarsi paler. Length .08 inch, slightly
more or less ; 2 mm. PI. II, fig. 5.
Under the above name mturalis || Lee. ( LeContei Cr.) is included.
These two species were described from uniques, and the slight differ¬
ences indicated vanish in a small series. As a rule, however, the
California specimens are somewhat more densely punctured, hut not
less coarsely as stated by LeConte.
In nearly all the specimens examined there is a short, narrow,
piceous space at the side margin of the elytra slightly behind the
middle. Thirteen specimens examined.
The species is very close to Loeivii and fioralis, and the differences
noted by LeConte are as to the first of the most evanescent character,
and as to the second refer rather to a variety mentioned by Mulsant.
Hub. — New Orleans, Texas, westward to California, Yuma to
Los Angeles.
TKANS. AM. EXT. SOC. XXII.
MAY, 1895.
100
GEO. H. HORN, M. D.
8. pacificus Cr. — Oval, outline nearly continuous, black shining, each ely¬
tron with a large reddish yellow oval spot slightly in front of middle, anterior
angle of thorax yellow. Head sparsely punctate, color either yellow or piceous.
Thorax slightly narrowed in front, sides feebly arcuate, sparsely finely punctate,
basal marginal line distinct. Elytra moderately coarsely, not closely punctate ;
prosternum smooth at middle, the elevated lines parallel and entire ; metasternum
roughly punctured at the sides, the mesocoxal line arcuate, joining the suture
one-third from the front. Abdomen moderately, coarsely and closely punctate,
the metacoxal line forming a complete arc as long as the first segment; femora
piceous, knees, tibiae and tarsi rufo-testaceous. Length .08 — .10 inch. ; 2 — 2.5 mm.
PI. II, fig. 7.
There does not appear to be any variation in the coloration of the
specimens examined, except as to the head, which may be either
yellow or black, independently of sex. The color of the anterior
angles of the thorax is not sexual, as Crotch’s description would
seem to indicate.
Hub. — California, Calaveras to Los Angeles.
S. st calms n. sp. — Oval, convex, outline continuous, black, shining, each
elytron with an oblique red spot, nearly all of which is in front of middle. Head
sparsely punctate. Thorax slightly narrower in front, sides feebly arcuate, basal
marginal line distinct, surface finely not closely punctate. Elytra sparsely, in¬
distinctly punctate ; prosternal elevated lines not reaching the anterior margin
of sternum ; metasternum at sides coarsely, closely punctured, the mesocoxal line
arched, joining the suture one-third from apex. Abdomen closely punctate, the
metacoxal line forming a complete arc, as long as the segment, the enclosed space
smooth. Legs piceous, tibiae and tarsi somewhat paler. Length .10 inch. ; 2.5
mm. PI. 1 1, fig. 6.
Of this species but one female specimen has been examined. It
resembles pacificus, but is more convex and broader, the red spot is
oblique, the thorax entirely black.
Hub. — New Mexico.
fc. flehilis n. sp. — Regularly oval, black, head and sides of thorax broadly
reddish yellow, each elytron with a reddish yellow triangular spot near the apex.
Head sparsely punctate. Thorax narrowed in front, sides feebly arcuate, sides
broadly reddish yellow, this extending narrowly along the apex, surface very
sparsely punctate, the basal marginal line indistinct. Elytra moderately coarsely,
not closely punctate; prosternal lines parallel and entire; metasternum coarsely
punctate at sides, the mesocoxal line arcuate, joining the suture one-fourth from
the front. Abdomen black, closely punctate, the metacoxal line forming a com¬
plete arc a little shorter than the segment. Legs piceous. Length .08 inch. ; 2 mm.
The elytra are paler along the apical border, but without forming
the red edge characteristic of the forms allied to collaris. To this
latter species it has considerable resemblance apart from the moder¬
ately large reddish spot near the apex of the elytra, which may be
called triangular with rounded angles.
Hub. — Arizona, Gila Bend (Wickham).
NORTH AMERICAN COLEOPTERA.
101
S. Irate m us Lee. — Broadly oval. Head yellowish, sparsely punctate.
Thorax narrowed in front, sides moderately arcuate, surface sparsely, obsoletely
punctate, color yellow, with a piceous median area of variable extent. Elytra
black, not very closely nor densely punctate, the apex with a yellowish area,
which never extends along the suture more than a fifth of its length, but along
the apex and sides nearly a third of the curve ; prosternal lines distinct, conver¬
gent in front ; metasternum coarsely punctate the mesocoxal line arcuate, joining
the suture near the front. Abdomen piceous, gradually paler at sides and apex,
metacoxal arc entire not quite as long as the segment. Legs reddish yellow.
Length .08 inch. : 2 mm. Pl. II, fig. 3.
The only variation observed is that of color. The piceous area of
the thorax may be greater or less, but the yellow lateral border is
always wide. The apical pale area of the elytra does not vary to
any extent. The abdomen may have the sides and apex vaguely
paler, or the paler area may be well defined.
As a synonym of this species hcemorrhous Lee. is placed. A re¬
cent examination of the types of both shov/s that they were estab¬
lished on uniques, the differences being merely individual, fraternm
having the greater extent of yellow on the thorax. Specimens sup¬
posed to be the males of this species are less broadly oval, and the
yellow at apex of greater extent.
S. creperm Muls. seems to differ only in having the last three ven¬
tral segments very yellow, except a median piceous spot on the third
segment. Mulsant records a variety of this which he calls ashitus.
While I am not yet fully prepared to place all the above in syn¬
onymy, it needs but a few intermediate forms to do so. In that case
the name creperm must stand. By some accident the latter escaped
notice by LeConte.
Hab. — Canada, Middle States, Illinois, Louisiana, Texas.
S. It ru I l(’i Muls. — Oval, black, shies of thorax and a large apical elytra!
space reddish yellow. Head sparsely punctate, color piceous or yellow. Thorax
narrowed in front, sides arcuate, surface sparsely, indistinctly punctate, color
variable from being entirely black to having the sides broadly and apex narrowly
yellow. Elytra moderately closely and distinctly punctate, black, the apical
yellow space occupying a third or even more of the Superficial area ; prosternal
lines distinct, convergent to the front; metasternum closely punctate at the sides,
mesocoxal arc joining the suture near the front. Abdomen usually entirely pi¬
ceous, closely punctate, metacoxal arc entire fully three-fourths the length of the
segment. Legs testaceous or slightly rufous, the femora darker. Length .08 —
.10 inch.; 2 — 2.5 mm. PI. II, fig. 8.
The description applies to many specimens seen from Florida,
Texas and Wyoming. I have two others which differ (Missouri and
New York) in having the sides and apex of the abdomen broadly
TRANS. AM. ENT. SOC. XXII.
MAY. 1895.
102
GEO. H. HORN, M. I).
yellow. The variation in color of the thorax has been indicated,
that at the apex of elytra is variable in extent, rarely smaller than
shown in the figure, but sometimes much larger.
A specimen in my cabinet from Texas has the elytra much more
coarsely punctate than usual, the thoracic piceous area small, the
sides and apex of abdomen yellow. This may indicate a distinct
species, but with a unique and the recognized variation observed in
other species it does not seem safe to separate it under a distinct
name.
Hub. — Florida, Texas, Wyoming, Kansas and perhaps New York
and Missouri.
S. semiruber n. sp. — Oval, outline regular, convex, head and thorax red¬
dish yellow, elytra piceous, the apical third or nearly half reddish yellow, beneath
piceous, abdomen almost entirely and legs yellow. Head moderately punctate.
Thorax narrower in front, sides feebly arcuate, basal marginal line distinct, sur¬
face sparsely, indistinctly punctate. Elytra moderately coarsely, closely, not
densely punctate; prosternum, in great part yellow, the elevated lines entire and
convergent; metasternum at sides coarsely and closely punctate, the mesocoxal
line joining the suture one-third from the front. Abdomen closely punctate, the
metacoxal arc entire, not quite reaching the first suture, the enclosed area smooth.
Length .08 inch, nearly; 2 mm.
This species resembles collar in, but differs in the much greater ex¬
tent of the red elytral apex and by the almost entirely reddish yel¬
low abdomen. The extent of the red elytral apex is as great, or even
greater than observed in Brullei ( fuemorrhous Lee.).
IJnb. — Florida, Texas.
S. |Mi net i eoi I i s Lee. — Oval, black, rather dull, sides of thorax indefinitely
yellow, apex of elytra narrowly reddish. Head piceous, mouth paler, surface
finely punctate. Thorax narrowed in front, sides feebly arcuate, basal marginal
line distinct, surface evidently punctate, more closely toward the sides. Elytra
more coarsely punctured than the thorax and moderately closely; prothorax be¬
neath piceous, prosternal lines entire and nearly parallel; metathorax at sides
coarsely not densely punctate, mesocoxal line joining the lateral suture near the
front. Abdomen closely punctate, the metacoxal arc entire very nearly as long
as the segment ; tibia* and tarsi pale, femora more or lcs's piceous. Length .08 —
.10 inch.; 2 — 2.5 nun.
The fifth ventral is broadly and deeply emarginate. The first
ventral has a smooth median area limited each side by a narrow
space of tine, short pubescence.
The last two or three segments are usually paler, sometimes also
this color extends indistinctly on the sides of the other segments.
This species is allied by general characters to collaris. The head
has never been observed to be yellow, nor are the sides of the thorax
NORTH AMERICAN COEEOPTERA.
103
as broadly so. Tlie legs, when mature, differ in color in the two
species, but immaturity in the present species would render this an
indefinite character. The character shown by the first ventral seg¬
ment of the male is a positive means of separation.
Hab. — Canada, New York and New Jersey (Da Costa, Wenzel),
Upper Mississippi (LeConte).
S. collaris Mels. — Regularly oval, piceous, moderately shining, head and
thorax reddish yellow, the latter with a piceous medio-hasal area of variable ex¬
tent, apex of elytra narrowly pale. Head sparsely finely punctate. Thorax
narrower in front, sides feebly arcuate, surface sparsely punctate, more distinctly
at middle than at sides, basal marginal line feebly distinct. Elytra punctate, the
punctures not coarse nor close ; prothorax beneath yellow, the prosternal lines
entire, convergent in front; metasternum at sides coarsely and closely punctate,
the mesocoxal line joining the lateral suture one-fourth from the front. Abdomen
closely punctate, piceous, the last three segments usually yellowish, metacoxal
line forming a complete arc, very nearly as long as the segment. Legs entirely
reddish yellow. Length .08 — .09 inch. ; 2 — 2.25 mm. PI. II, fig. 1.
The male has the fifth ventral broadly and deeply emarginate, the
first ventral at middle finely and closely punctate, without pubescence.
The color of the thorax varies; the piceous area may be merely a
small space in front of the scutellum, or it may occupy a full third
of the surface. The abdomen may vary in color, so that even the
sides of the first two segments may be pale. The legs seem uniformly
reddish yellow.
Under the name coflaris are included several described by Mulsant
and LeConte, evidently from inadequate material ; these are chatchas
and fadigiatus Muls. and caudalis, eomobrinus and soeer Lee.
Closely allied also is puncticollb* Lee., which may be separated
empirically by the color of the legs, and certainly by the male char¬
acters.
Hab. — Canada', southward to Florida and Texas, westward to
Illinois and Nebraska.
S. cervical is Muls. — Oval, outline continuous, convex, head, thorax and
legs reddish testaceous, elytra piceous, at apex narrowly bordered with reddish
yellow. Head sparsely punctate. Thorax narrower in front, sides arcuate, surface
very sparsely punctate, basal marginal line distinct. Elytra moderately coarsely,
but not closely punctate: prosternum more or less yellow, the elevated lines
slightly convergent to the front; metasternum at sides moderately closely punc¬
tured, the mesocoxal line joining the suture one-third from apex. Abdomen
black, the terminal segments pale, metacoxal line forming a complete arc shorter
than the segment. Length .06— .09 inch. ; 1.5 — 2.25 mm.
The prosternal lines vary in length, being at times short not pass¬
ing the coxte, or they may attain the front of the prosternum. The
TRANS. AM. ENT. SOC. XXII.
MAY. 1895.
104
GEO. H. HORN, M. D.
abdomen may be narrowly pale at apex, or the greater part of the
last three segments pale. The apical pale border of the elytra is at
times indistinct, in its best development it never exceeds an eighth
of the length of the suture.
From an examination of the type of socer it seems to be an acci¬
dental cervicalis, with the middle third of the base of the thorax
piceous.
Hab. — Canada, New Jersey, North Carolina, Georgia, Missouri.
S. abbreviatus Lee. —Oval, very little longer than broad, entirely black,
legs red. Head moderately, coarsely and closely punctate. Thorax narrower in
front, sides very little arcuate, basal marginal line distinct, but tine ; surface
sparsely punctate at middle, much more closely at the sides. Elytra coarsely and
moderately closely punctate ; prosternal elevated lines distinct, slightly convergent
in front; metasternum closely punctate at sides, the mesocoxal arc joining the
suture one-fourth from the front angle. Abdomen more finely, hut densely punc¬
tate, metacoxal arc entire very little longer than half the first segment. Length
.08 inch. ; 2 mm.
This species resembles tenebrosus, but the upper surface is more
coarsely and closely punctate. They differ more especially in the
extent of the metacoxal arc, which here is short, but in tenebrosus
nearly as long as the segment.
Hab. — Lake Superior region. Two females in the LeConte cabinet.
S. marginicollis Mann. — Broadly oval, outline continuous, black, head
often (especially in male) and sides of thorax reddish yellow. Head finely,
sparsely punctate. Thorax slightly narrowed in front, sides feebly arcuate, sur¬
face punctate, more closely at sides, basal marginal line distinct. Elytra moder¬
ately closely punctate ; prosternal carinse convergent and entire ; metasternum
coarsely and closely punctate, the mesocoxal line arcuate, joining the suture near
the front angle. Abdomen closely coarsely punctate, the metacoxal arc entire
very nearly as long as the first segment. Legs nearly black, the anterior some¬
times more or less rufous. Length .06 — .08 inch. ; 1.5 — 2 mm.
The male has the fifth ventral feebly emarginate as usual in the
genus. At the middle of the posterior margin of the first ventral
segment is a small tubercle with very small hairs.
This species varies in the coloration of the head and thorax. The
head may be either red or black, in the former case nearly all are
males, although some females are similarly colored. The thorax is
usually yellow at the sides in a variable extent, sometimes the me¬
dian dark space is reduced to a narrow strip along the middle of the
base. Others again have the entire thorax black. These are not
readily separable from laemtris by description, except in the male.
NORTH AMERICAN COLEOPTERA.
105
Under the name marginicollis there have hitherto been placed all
the California Scymnus with black elytra and pale thoracic sides.
My attention was first called to the peculiar structure of the first
ventral segment of the male by Mr. H. C. Fall, of Pomona, Cal.,
and it is plainly evident that two species at least have been con¬
founded. I know of no means of separating the females excepting
that in the present species the legs are nearly always black, while in
the other they are either red or the tibiae and tarsi are pale.
I have chosen the name marginicollis for the above form rather
arbitrarily from the fact that it is inferrible from the descriptions
that the legs are almost entirely black.
Hub. California, extending from a little north of San Francisco
to Santa Barbara, Los Angeles ; Catalina Isd., San Diego and
Pomona.
S. urriclio n. sp.
This name is given to those forms heretofore mixed with man/ in i-
collis, and to which the detailed description of that will fully apply,
except as to the following details:
The legs may be reddish yellow, or the tibiae and tarsi alone of
that color; sometimes the legs are entirelv piceo-rufous.
The male has the fifth segment feebly emarginate, the first seg¬
ment at middle not tuberculate, but with an oval polished space at
the suture sharply limited by the close punctures around it.
The variations are as in marginicollis , but specimens entirely black
are more numerous, and that, too, among those with the palest legs.
It is possible that there remain two species in the above aggregate,
but I am unable to separate them, but those forms with the entirely
rufo-testaceous legs are to be considered the typical forms.
There is still greater difficulty in separating the species from la-
custris and tenebrosus than in the case of marginicollis. In the
latter the male has the small tubercle of the first ventral segment.
In the present species the first ventral does not greatly differ from
the other two mentioned. In both these, however, the last segment
of the male is much more deeply emarginate, especially in lacustris.
Hub. — British Columbia southward through Washington, Oregon
and California, eastward to Utah. Specimens have been seen from
Arizona, El Paso, Tex., and Calmalli Mines, Penins. Cal.
S. lacustris Lee. — Broadly oval, convex, black. Head sparsely punctate.
Thorax narrowed in front, sides feebly arcuate, surface sparsely feebly punctate.
Elytra moderately, coarsely, but not closely punctate ; prosternal carinse distinct
(14)
TRANS. AM. ENT. SOC. XXII.
MAY, 1895.
106
GEO. H. HORN, M. D.
convergent in front : metasternum at sides very coarsely punctate, the mesocoxal
line joining the lateral suture one-third from the front. Abdomen black, evenly
and more finely punctate than the metasternum; metacoxal arc entire, the en¬
closed area nearly as long as the segment ; femora entirely or in great part pice-
ous. tibia? and tarsi paler. Length .08— .10 inch. ; 2 — 2.5 mm.
Iii the male the last ventral segment is very deeply impresso-
emarginate. The legs may be entirely piceous.
Hub. — North shore of Lake Superior (Lee.) ; westward Utah,
Park City, New, Washington, California.
s. tenebrosus Muls. — Broadly oval, entirely black, legs red or reddish
brown. Head sparsely punctate. Thorax narrower iu front, sides feebly arcuate,
surface equally sparsely punctate. Elytra slightly more closely and coarsely
punctured than the thorax. Body beneath entirely black : prosternal elevated
lines entire, slightly convergent ; metastemum at sides coarsely and closely punc¬
tate, the mesocoxal arc joining the lateral suture very near the front angle.
Abdomen more closely, but less coarsely punctured than the metasternum, meta¬
coxal arc entire, nearly as long as the first segment. Length .08 — .10 inch. ; 2 —
2.5 mm.
In the male the last ventral is feebly impresso-emarginate. The
legs vary in color from very pale red to brown, but are uniform.
In the original description LeConte states that the head of the male
is pale. This is only partly true ; the color of the head is by no
means indicative of sex.
Huh. — Massachusetts to North Carolina, Southern States (Lee.).
Jij. iumctum Lee. — Broadly oval, black, shining, outline nearly continuous,
legs testaceous, the femora more or less piceous or even black. Head indistinctly
punctate. Thorax narrowed in front, sides feebly arcuate, surface sparsely punc¬
tate at middle, more densely and coarsely at the sides, the basal marginal line
distinct. Elytra sparsely punctate, the punctures finer than those of the sides of
the thorax; prosternum slightly convex and punctate, without elevated lines;
metasternum at sides coarsely punctate, the mesocoxal line arcuate, joining the
suture one-fourth from the front. Abdomen rather densely punctate, metacoxal
line forming a complete arc scarcely longer than half the til’s t segment. Length
.05 — .0(1 inch. ; 1.25 — 1.50 mm.
Iii the male the fifth ventral segment is slightly emarginate, the
female has six very distinct segments. The suture between the first
two ventral segments is totally obliterated at middle.
The color of the legs varies ; the tibiae and tarsi are testaceous and
the femora piceous, but the femora may be almost entirely pale,
except at base, or may be entirely black.
Hub. — The species seems very widely distributed, specimens are
known to me from Canada, the Middle States, Missouri, New Mexico,
British Columbia, and California from Siskiyou to Los Angeles.
NORTH AMERICAN COLEOPTERA.
107
S. nanus Lee. — Broadly oval, outline continuous, black, shining, anterior
angles of thorax often rufescent, legs reddish. Head evidently punctate. Thorax
narrower in front, sides arcuate, surface sparsely punctate, equally at middle and
sides, basal marginal line distinct. Elytra not closely punctate, hut much more
coarsely than the thorax ; prosternum slightly convex, punctate, without elevated
lines; metasternum at sides closely punctate, the mesocoxal line joining the su¬
ture one-fourth from apex. Abdomen closely punctate, the metacoxal line form¬
ing a complete arc nearly as long as the first segment. Length .05 — .06 inch.;
1.25 — 1.50 mm.
As in punctum the male has the fifth ventral feebly impressed at
tip, the female has six distinct segments, the suture between the first
two ventrals is not so completely obliterated as in that species.
The thorax may have the apical angles reddish, but never very
conspicuously so, but the thorax may be entirely black. This spe¬
cies resembles punctum closely, and the only reliable character for
their separation is in the form of the metacoxal line, here the arc is
very nearly as long as the first segment, in that but little more than
half. The punctuation of the sides of the thorax — coarse in punctum,
very fine and sparse in nanus, is a fairly good character, but variable
to an extent leading to doubt.
Hub. — Specimens have been seen from Michigan, Middle States,
Florida, New Mexico, Arizona and California.
S. ill ilis n. sp. — Broadly oval, convex, piceous black, shining, mouth parts,
an ten me and legs yellow, pubescence sparse, erect. Head indistinctly punctate.
Thorax much narrower in front, sides feebly arcuate, basal marginal line distinct,
surface almost smooth, a few fine, indistinct punctures. Elytra relatively coarsely,
sparsely, but not deeply punctate, each puncture with a nearly erect grayish hair ;
prosternum flat, without elevated lines; metasternum smooth, slightly punctate
at sides, mesocoxal arc short, joining the suture near the front angle. Abdomen
with six distinct segments, sparsely punctate, the metacoxal arc entire, nearly as
long as the segment. Length .03 — .04 inch. ; 1 mm. and less.
This species resembles some of the smaller forms of nanus and
punctum, but may be known from these as well as any others in our
fauna by the nearly erect, sparse hairs of the surface.
Hub. — Florida, Tampa, Bar|tow, Crescent City and Haulover
(coll. Hubbard and Schwarz). A specimen in bad condition in my
collection from Albuquerque, N. Mex., probably belongs here. This
Scynmus is predatory on Aleyrodes citri.
S. punctatus Mels. — Oblong oval, more than half longer than wide, black,
shining, each elytron with a small, oval, red spot near the centre. Head sparsely
punctate. Thorax slightly narrower than the elytra, narrowed in front, sides
nearly straight, arcuate near front angles, disc distinctly punctate, the punctures
evenly disposed, basal marginal line distinct. Elytra a little wider at base than
TRANS. AM. ENT. SOC. XXII.
MAY, 1895.
108
GEO. H. HORN, M. D.
the thorax, coarsely and moderately deeply, but not closely punctate ; prosternum
without elevated lines; metasternum sparsely punctate at the sides, the meso-
coxal line feebly curved, joining the suture one-third from the front. Abdomen
sparsely punctate, the metacoxal line forming a complete arc very little broader
than long and nearly as long as the segment. Legs black or piceous. Length
.0(1 inch.; 1.5 mm. PI. II. tig. 2.
In the male the last ventral is feebly emarginate at tip. This
species varies a little in the size of the red elytral spot. In one
specimen before me from Texas the spot extends obliquely to the
suture. The absence of the prosternal elevated lines seems to relate
this species to the forms with the incomplete metacoxal arc.
I have in my cabinet one specimen in which the elytra are entirely
black without spot. Its other characters are those of punctata s. I
feel unwilling to separate it as a distinct species, inasmuch as the
Canadian specimens show quite a variation in the size of the elytral
spot. The specimen is from Eagle Harbor, Lake Superior.
Hab. — Canada, Pennsylvania and Texas.
S. con i feraru in Crotch. — Oblong oval, fully one-half longer than wide,
black, anterior angles of thorax pale, elytra reddish, black along the base and
two-thirds of the suture and sides. Head sparsely punctate. Thorax slightly
narrowed in front, sides very feebly arcuate, surface sparsely indistinctly punc¬
tate-. Elytra a little wider at the base than the thorax, sparsely punctate ; pro-
sternal elevated lines well marked, parallel and entire ; metasternum sparsely
punctate at sides, the mesocoxal line feebly arched joining the suture one-fourth
from the front. Abdomen sparsely punctate, metacoxal line forming a complete
arc, two-thirds the length of the segment. Legs black. Length .0(1 — .08 inch. ;
1.5 — 2 mm.
The only variation observed is in the extent of the red coloration
of the elytra. Sometimes they are entirely red, or the base and two-
thirds of suture and side margin piceous, or the piceous may extend
to the apex along the suture and side thus enclosing a large oval
distal spot. A specimen from Veta Pass, Col. (Schwarz), has the
thorax entirely black and the legs reddish. This may be a distinct
species, but the material at hand is not sufficient to establish it.
Hab. — California from Tahoe and Alameda south to San Bernar¬
dino, Nevada, Colorado, Veta Pass.
Synonymy and Bibliography.
SCYMNUS Kug.
S. balteatus Lee., Proc. Am. Philos. Soc. 1878, p. 399.
S. bigemmeus n. sp.
S. Liebecki n. sp.
S. myrmidon Mills., Spec. Sec. p. 954.
NORTH AMERICAN COLEOPTERA.
109
S. quadriteeniatus Lee., loc. cit. p. 400.
S. xanthaspis Muls., loc. cit. p. 952.
S. terminatus Say, Bost. Jour, i, p. 203; edit. Lee. ii, p. 071 ; Muls., loc. cit. p.
952: Lee., Proe. Acad. 1852, p. 136.
S. femoralis Lee., loc. cit. p. 136.
S. debilis Lee., loc. cit. p. 137.
S. intrusus n. sp.
S. bivulnerus n. sp.
S. bisignatus n. sp.
S. flavifrons Mels., Proc. Acad. 1847, p. 181; Lee., loc. cit. p. 136; bioculatus
Muls., loc. cit. p. 960; Lee., loc. cit. p. 136; guttiger et marginellus vars.
Muls., loc. cit. p. 965.
S. sordidus n. sp.
S. ornatus Lee., loc. cit. p. 135.
S. coloradensis n. sp.
S. amabilis Lee., loc. cit. p. 135.
S. guttulatus Lee., loc. cit. p. 136.
S. nebulosus Lee., loc. cit. p. 137.
S. Phelpsii Crotch, Trans. Am. Eut. Soc. 1874, p. 77.
S. circumspectus u. sp.
S. opaculus n. sp.
S. americanus Muls., loc. cit. p. 965; Lee., loc. cit. p. 137.
S. caurinus u. sp.
S. pallens Lee., loc. cit. p. 137.
S. cinctus Lee., loc. cit. p. 137; suturalis || Lee., loc. cit. p. 138; LeContei Crotch,
Revision, p. 264.
S. paciflcus Crotch, Trans. Am. Ent. Soc. 1874, p. 77.
S. strabus n. sp.
S. flebilis n. sp.
S. fraternus Lee., loc. cit. p. 138; ? creperus Muls., loc. cit. p. 985; astutus Muls.,
loc. cit. p. 986 ; hsemorrhous Lee., loc. cit. p. 138.
S. Brullei Muls., loc. cit. p. 984.
S. semiruber n. sp.
S. puncticollis Lee., loc. cit. p. 139.
S. collaris Mels., Proc. Acad. 1847, p. 180; chatchas Muls.,- loc. cit. p. 986; fastigi-
atus Muls., loc. cit.; caudalis Lee., consobrinus Lee., loc. cit. p. 139.
S. cervicalis Muls., loc. cit. p. 984; Lee., loc. cit. p. 139; var. ? soeer Lee., 1. c.
S. abbreviatus Lee., loc. cit. p. 140.
S. marg-inicollis Mann., Bull. Mosc. 1843, p. 313; Muls., loc. cit. p. 1053; Lee.,
loc. cit. p. 140.
S. ardelio n. sp.
S. lacustris Lee., loc. cit. p. 140.
S. tenebrosus Muls., loc. cit. p. 989 ; Lee., loc. cit. p. 140.
S. punctum Lee., loc, cit. p. 141.
S. nanus Lee., loc. cit. p. 140.
S. utilis n. sp.
S. punctatus Mels., Proc., Acad. 1847, p. 180.
S. coniferarum Crotch, Trans. Am. Ent. Soc. 1874, p. 77.
TRANS. AM. ENT. SOC. XXII.
MAY. 1895.
110
GEO. H. HORN, M. I).
Not Identified.
S. icteratus Mills., loc. cit. p. 909.
S. cyanescens Mills., loc. cit. p. 993.
S. atramentarius Boh., Bug. Resa Ins. p. 207.
S. californicus Boh., loc. cit.
S. infuscatus Boh., loc. cit. ]>. 208.
ERRATUM — Page 85, line 13, for cauriiius read opaculm.
SCYJ1XILUS n. g.
This genus is proposed for a species of the form and habitus of
Seyinnus punctum, with all the essential characters of Scymnus, but
differing in the following particulars:
Body not pubescent, except feebly on the head and thorax. Eyes
feebly emarginate and impressed, the lenses obliterated opposite the
base of the antennse. An ten me very short, formed as in Scymnus ;
prosternum Hat, elevated lines not distinct; mesocoxal line joining
the met-episternal suture at middle. Abdomen composed of five
segments, the first longer at middle than the next three, the suture
between the first and second well marked ; metacoxal line oblique,
extended toward the edge of the segment, which it joins near the
posterior angle.
The impression of the eyes recalls a similar character observed in
Throscu s, in which, however, the impression is better marked. My
attention was first especially directed to this insect by the fact that
there are but five ventral segments, while in the group (B) of Seyin-
n ii*, with which it might be associated, there are six segments. The
metacoxal line is also more oblique than in that group, and reaches
the side of the segment without running parallel with the first suture.
s. iiterrimiiN n. sp. — Broadly oval and convex, margin slightly interrupted,
black, shining, elytra usually without trace of pubescence. Head coarsely sparsely
punctate. Thorax slightly narrowed in front, sides feebly arcuate, surface coarsely
not closely punctate, basal marginal line indistinct ; prosternmu Hat. coarsely
punctured, without elevated lines; metasternuni coarsely sparsely punctured and
alutaceous. the mesocoxal line joining the suture near its middle. Abdomen
sparsely punctate, metacoxal line feebly curved, not touching the first suture nor
parallel with it. Length .04 — .00 inch.; 1 — 1.5 mm.
The abdomen has but five segments; the pubescence of the head
and thorax is sparse, but distinct; but in neither of the four speci-
mens seen has there been any trace of pubescence observed on the
elytra.
Hub. — Northern California and Oregon (Koebele, 40).
NORTH AMERICAN COLEOPTERA.
Ill
CEFHALOSCY1H M S Crotch.
This genus differs from Scyvmv* in having the anterior coxal cavi¬
ties open behind. The thorax is narrower at base than the elytra
and much more deeply emarginate at apex than in Scymnus. The
head is more deeply inserted, the front vertical, the eyes narrowly
oval, rather finely granulate, and in two species with a very feeble
impression at the antennal insertion. The antenme are very short
and seem to be but 10-jointed. The abdomen has five segments, the
sutures distinct ; tarsal claws slightly broadened at base.
Crotch gives eleven joints to the antennae, but T have not been
able to see more than ten, in which respect Mr. II. C. Fall, of Cali¬
fornia, adds confirmation from an examination of a species taken by
him.
The species at present known are as follows:
Elytra not ornate.
Body above black ; elytra moderately coarsely, not densely punctate; eyes with
slight impression . Zinimerinaiini.
Body above brownish ; elytra very coarsely and densely punctured ; eyes
scarcely visibly impressed . occirtentalis.
Elytra with two yellow spots often suffused.
Elytra not coarsely punctate; eyes distinctly notched . ornatns.
(’. Zimmerinanni Or. — Broadly oval, slightly convex, black, slightly
bronzed, pubescence gray and irregular. Head moderately coarsely and not
closely punctate. Eyes feebly impressed, not twice as long as wide; labrum con¬
spicuously yellow. Thorax fully three times as wide at base as long at middle,
coarsely and closely punctured, densely at the sides, no basal marginal line.
Elytra broader at base than the thorax, about one-fourth longer than wide, sur¬
face more coarsely punctate than the thorax, but less closely ; prosternum short
and broad, nearly smooth without elevated lines; metasternum smooth at middle,
punctate at sides; mesocoxal arc joining the suture one-fourth from the front.
Abdomen scarcely punctate, metacoxal arc entire, half the length of the segment.
Legs piceous, tibiae and tarsi paler. Length .06 — .08 inch. ; 1.5 — 2 mm. PI. IT,
fig. 10.
Crotch describes this species as dark green, which is the result of
slight immaturity with the mixture of slight bronze of the surface
and the pale hairs.
The type was collected in South Carolina, others are known to me
from District of Columbia and Maryland.
€'. oeeidentalis n. sp. — Oval, slightly oblong, feebly convex, paler piceous
with grayish pubescence. Head moderately closely punctate. Thorax three
times as wide as long at middle, sides feebly arcuate, surface closely punctate,
densely and rather roughly at the sides. Elytra wider at base than the thorax,
surface coarsely and closely punctate, roughly near the umbone; prosternum
TRANS. AM. ENT. SOC. XXII.
MAY. 1895.
GEO. H. HORN, M. D.
nearly square, without elevated lines; metasternum at sides obsoletely coarsely
punctate, the mesocoxal line indistinct. Abdomen sparsely punctate, the meta-
coxal arc entire, but short aud indistinct. Legs paler than upper surface. Length
.07 inch. ; 1.75 mm.
In this species the eyes are much narrower than in the other spe¬
cies and the impression at the lower end so feeble that it might readily
escape notice.
Hab. — Southern California, Los Angeles and southward.
C. ornatus u. sp.- — Broadly oval, moderately convex, piceous, pubescence
gray, directed irregularly, each elytron with two irregularly oval yellow spots
not sharply defined, sometimes large, suffused and united. Head moderately
coarsely and closely punctate. Eyes with well defined impression at lower angle.
Thorax nearly three times as wide as long at middle, slightly narrower in front,
sides feebly arcuate, surface moderately punctate. Elytra not closely nor deeply
punctate; prosternum broader than long, flat, without elevated lines; metaster¬
num punctate at the sides, the mesocoxal line joining the suture one-third from
the apex. Abdomen sparsely punctate, metacoxal arc entire not half as long as
the segment. Legs piceo-testaceous. Length .06 — .08 inch. ; 1.5 — 2 mm.
No sexual differences have been seen in the six specimens exam¬
ined. No great variation has been observed, excepting that the
spots on the elytra extend and become more or less suffused. The
abdomen is piceous, sometimes with the entire border paler.
This species resembles somewhat Sc. guttulatus , and apparently has
been mixed with it in collections.
Hub. — California, Siskiyou to Alameda, also Catalina Island.
RHIZOBIUS Steph.
This genus differs from Scymnus in the antennae reaching to the
hind angles of the thorax. The vestiture consists of the usual pu¬
bescence of Scymnus with numerous short, erect hairs irregularly
placed on the elytra.
R. lophanthce Blaisd. ( Scymnus ), Ent. News, March, 1892, p. 51 ;
toowoombce Blackb., Trans. Royal Soc. South Aust. xv, December,
1892, p. 254.
Form of Sc. co/laris. — Head and thorax reddish yellow, the latter
with a central cloud variable in distinctness. Elytra piceous, with
feeble aeneous lustre ; underside and legs reddish yellow.
It is unfortunate that an intentionally introduced insect should
have been first named in the country of its expatriation.
Introduced from Australia, Brisbane.
R. debilis Blackb. — This species in color and form resembles Sc.
pattern or Rhclpsii. It has attained but little foothold.
Introduced with the preceding.
NORTH AMERICAN COLEOPTERA.
113
JJOVIUS Muls.
Two species of this genus have been introduced into California
for their utility in the destruction of Icerya purchasi, which threat¬
ened to destroy, or very greatly injure the orange and lemon trees
of that State.
X. cardinal!* Muls.
This insect was originally described as Vedalia, but recent re¬
searches place it in Nainas. Chapuis places these two genera in
separate groups, and as these two groups, Ortaliites and Scynmites,
are separated especially by the thorax narrower at base than the
elytra in the former it would seem preferable to remove Novius from
the Scynmites and place it nearer to Rodolia and Vedalia.
X. cardinalis Muls. — A species as large as Exochomus marginipennis, hut
more depressed. Its elytral markings are strikingly similar to some of the va¬
rieties of that species. The elytra are red, the suture narrowly black, with two
slight enlargements, the apex is black, extending one-third or more to humerus
and at its end expanded, a spot partly surrounding the urnbone and an oval spot
one-third from apex. The legs are black, often with the tibiae and tarsi carmine-
red. PI. II, fig. 9.
This insect is now thoroughly acclimated in the citrus growing
regions of California, and very full accounts of it have appeared in
many publications in that State and in “ Insect Life,” Washington.
Introduced from New Zealand.
X. Koebelii Ollitfe.
This is somewhat smaller than cardinalis. The elytra are reddish,
the suture narrowly black, the same color extending around the apex
and sides to middle. Specimens are frequent with the elytra entirely
red. Thorax entirely black, while that of cardinalis is pale at the
sides.
This species does not seem to have gained the footing of cardinalis
although fairly acclimated.
Specimens were given me by Mr. A. Koebele, who v/as instru¬
mental in introducing them from Australia, their native region.
COC'C IIH LA Kug.
This genus is usually placed in a group without other associates,
distinguished from all the pubescent Coccinellidse by the faint at¬
tempt at a stria! arrangement of some larger punctures. It must,
however, be admitted that this character seems to fail almost entirely
and can be seen better by faith than with the lens.
Two species occur in our fauna.
C. lepida Lee., Proc. Acad. 1852, p. 232. The figure (PI. II, tig.
12) gives a fair idea of the form and markings of this species, other¬
wise well described by Dr. LeConte.
TRANS. AM. ENT. SOC. XXII.
(15)
MAY, 1895.
114
GEO. H. HORN, M.D.
Occurs in Canada and t lie New England States as far south as
the latitude of Philadelphia.
C. Occident nl is n. sp. — Oblong, subdepressed, finely pubescent, above in
great part yellowish red, except head and elytral markings piceous, beneath pi-
ceous, except the last three ventral segments and legs, which are yellow. Head
sparsely punctate. Thorax more closely punctate. Elytra much more coarsely
punctate, a few of the larger punctures with faint serial arrangement; color
yellow, sides and base piceous, a sutural stripe joining the base and ending in a
cordiform spot one-third from apex. Length .12 inch. ; 3 mm. PI II, fig. 11.
In comparing this species with lep ida the following differences will
be observed. In the markings of the elytra there is an absolute
constancy in the comparatively large series of both species scarcely
the slightest variation has been observed. In occidental^ s there is a
sutural stripe ending in a cordiform spot ; in lepida there is no sutural
stripe and the spot is isolated and transversely oval. On the under¬
side the first two segments are entirely piceous in oceideatalU, but
yellowish at sides in lepida.
On comparing the forms of the two lepida is narrower; it has also
in many specimens a slight tendency to have the sides of the thorax
angulate. In lepida the elytral punctures are, on the whole, coarser,
and the serial arrangement of some coarser ones better marked.
HaJk.— W yoming to Vancouver.
EXPLANATION OF PLATE I.
ig-
1.—
S cymnus quadritieniatus Lee.
2. —
“ coloradensis Horn.
3 —
“ bigemmeus % Horn
4.—
9
U
5. —
“ balteatm Lee.
u
6.—
■* IAebecld Horn
7. —
“ jlavifrons Mels.
8.—
“ amabilis Lee.
9.—
“ myrmidon Mu Is.
ta¬
“ bivulnerus Horn.
il.—
“ bisiqnatus Horn.
12.—
“ ornatus Lee.
13.—
“ guttulatus Lee.
14.—
“ “ var.
15 —
“ terminates Say.
10. —
“ sordidus Horn.
EXPLANATION OF PLATE
II.
Fig. 1. — ScymnuH coUaris Mels.
2. _ - “
punctatus Mels.
3.— “
froternus Lee.
4.— “
d re inn sped ns Horn
5. — “
cinctus Lee.
6— “
strabus Horn.
7.— “
pacificus Crotch.
8.— “
Brullei Mels.
9. — Novius
cardinalis Muls.
“ 10. — Cephaloscymnus Zimmermanni Crotch.
“ 11.— Coccidula occidentalis Horn.
“ 12.— “ lepida Lee.
Trans. Am. Ent. Soc. Vol. XXII.
PI. I
Trans. Am. Ent. Soc. Vol. XXII.
PI. II.
NORTH AMERICAN HYMENOPTERA.
115
NOTES OX BEES. WITH DESCRIPTIONS OF
NEW SPECIES.— Thi rd Paper.
BY CHARLES ROBERTSON.
With the exception of a few species from Florida, the following
paper is based on the bees occurring in the neighborhood of Carlin-
ville, Ill. It is intended to give descriptions of certain new species,
and of the still undescribed sexes of known species, with notes on
synonymy, etc., as well as to supplement the work of the author in
previous papers by indicating other characters by which the species
may be distinguished from those they nearly resemble. This paper
will be followed by another on the time of flight and the habits of
the local species. The synonymy and arrangement are based on
Cresson’s Catalogue.
Colletes imequalis Say, Bust. Jour, i, 391, 1837; Colletes propinqua Cress.,
Proc. Bost. Soc. Nat. Hist. xii. 165, 1868 — see Patton, ibid, xx, 142; Colletes
canadensis Cress., ibid. 166.
Say says that his species flies in March and April. I have taken
it from the 20th of March to the 28th of May, while the species
which Cresson has doubtfully referred to C. incequalis I have taken
only from the 30th of August to the 7th of October. This early
species, which agrees with Say’s description of C. incequalis, I have
compared with the types of C. propinqua in the collection of the
American Entomological Society. I have also examined the types
of C. canadensis. A specimen which Mr. Cresson doubtfully referred
to C. canadensis is nothing, I think, but C. incequalis.
Colletes eoin pacta Cress.
This species may be most readily distinguished from the other
species known to me by its metathorax, which, instead of the usual
transverse series of pits, presents a rugose triangular enclosure. It
Hies in Autumn.
Colletes distincta Cress.
The female closely resembles the male, but is more finely punc¬
tured, the vertex and mesoscutum have more black hairs, and the
abdominal fasciie are white, the fascia on drst segment being con¬
tinued upon base of second. I have taken this species in Florida.
TRANS. AM. ENT. SOC. XXII.
MAY. 1895.
116
CHARLES ROBERTSON.
Colletes llioracica Sm.
This handsome species, taken in Florida, may be readily identified
from Smith’s description. It was not recognized by Cresson.
Colletes willistouii Rob., Trans. Am. Ent. Soc. xviii, 60.
The % closely resembles the 9 . This is a little smaller than C.
lutitarsis Hob. and may be distinguished by the hind tarsi being much
more slender.
Colletes armuta Patton, Proc. Bost. Soc. Nat. Hist, xx, 143. 1879; C. scitult
Patton, ibid.; C. nuequalis Cress, (nec Say), ibid. xii. 166, 1S68; C. spinom
Rob.. Trans. Am. Ent. Soc. xviii, 60, 1891.
Cresson ’s Catalogue does not give the synonyms of' Patton’s paper,
for which reason I did not know of them, and redescribed this species
and the next. All of the males which I have seen have some black
or fuscous hairs on the thorax above, which leads me to suspect that
the males referred to this species by Patton do not belong to it. 1
have seen an example of the type of C. scitu/a and regard it as the
male of this Colletes.
Colleles aestivalis Patton. Proc. Bost. Soc. Nat. Hist. xx. 142-4. 1879:
heueherse Rob.. Trans. Am. Ent. Soc. xviii, 61. 1891.
This species is the special pollinator of the flowers of Heuchera.
Mr. 1 )atton captured it on flowers of Heuchera americana in Con¬
necticut, and in Illinois I have taken it abundantly on H. hlspida.
Colletes euloplii Rob.. Trans. Am. Ent. Soc. xviii. 61 ; Colletes illinoiensis
Rob., ibid. 62.
This species closely resembles C. americana Cress., but has the ab¬
domen more strongly punctured and with narrower fasciae, and there
is a well-marked interval between the base of the mandibles and the
eyes. In C. americana these almost touch, while in C. euloplii there
is quite an interval, which in the £ is subquadrate.
Prosopis modest us Say: Hylsens modest us Say. Bost. Jour. i. 392. 1837. Lee
edit. ii. 771 : Prosopis affinis Sm.. Brit. Mus. Cat. Hym. i, 24. 1853 ; Cress.,
Proc. Bost. Soc. Nat. Hist. xii. 270.
Prosopis pygmsea Cress.
The 9 has the usual spots on the bases of the tibiae, those on an¬
terior pair extending nearly to tip. There is a variable yellow spot
on each side of face, one on tegulae, on tubercles, and often on apex
of clvpeus, but some specimens show no yellow markings, except on
the tibiae. I have taken the sexes in copula.
NORTH AMERICAN HYMENOPTERA.
117
Spliccoi veil t l'is Cr., Proc. Ent. Soc. Phil, iii, 31, % 9 ; 0. rustica Cr.,
ibid. 37, % .
Ilegacliile 6- Melissodes
dttecta Cr. ibid. 199, % .
This is a common species in Illinois. I have often taken the sexes
in copula. I have seen the types of S. frater in the collection of the
American Entomological Society. They are worn and faded speci¬
mens.
Synlialonia hclfragei Cr. ; Melissodes belfragei Cr.. Trans. Am. Ent. Soc. iv,
278, 9 '• Melissodes honesta Cr., ibid. 279, £ ; Synhalonia honesta Patton, Bull.
U. S. Geol. Surv. v, 474, y .
This is also common in Illinois. I have taken the sexes in copula.
Synhalonia atriventris Sm. ; Melissodes atriventris Sm., Brit. Mus. Cat.
Hym. ii, 310, 1854, % ; Synhalonia atriventris Cr., Cat. Hym. N. A., 305, 'J, ;
Melissodes dubitata Cr., Proc. Acad. Nat. Sci. Phil. 1878, 194, 9 •
Synhalonia ni gripes Sm. ; Melissodes nigripes Sm., Brit. Mus. Cat. Hym.
ii, 311, 1854, 9 •
Mel isso except that the pygidium is shorter, broader, and broadly
truncate at apex, and is not as distinctly defined ; the markings are precisely as
in the other sex. Length 6 mm.
Massachusetts, New Jersey, Illinois, West Point, Neb. (Barber).
TRANS. AM. ENT. SOC. XXII.
MAY. 1895.
134
WILLIAM J. FOX.
CRABRO Fabr. (s. 1.)
Vespa (in pt.) Linne, Syst. Nat. Ed. 10, 1758.
Sphex (in pt.) Linne, Faun. Suec., 1761.
Spliex (in pt.) J. C. Schaffer, Icon. Ins. i, 1766.
Crabro (in pt.) Fabricius, Syst. Ent., 1775.
Pemphredon (in pt.) Fabricius, Syst. Piez., 1804.
Crabro Latreille, Hist. Nat. Ins. xiii, 1805; Gen. Crust, et Ius. ii, 1809.
Ehopahtm Kirby, Stephen’s Syst. Cat. Br. Ins., 1829.
Crabro St. Fargeau et Brulle, Ann. Soc. Ent. Fr. iii, 1834.
Solmius St. Fargeau et Brulle, ibid.
Blepharipus St. Fargeau et Brulle, ibid.
Ceratocolus St. Fargeau et Brulle, ibid.
Thyreopus St. Fargeau et Brulle, ibid.
Thyreus St. Fargeau et Brulle, ibid.
Crossocerus St. Fargeau et Brulle, ibid.
Lindmius St. Fargeau et Brulle. ibid.
Dasyproctus St, Fargeau et Brulle, ibid.
Corynopus St. Fargeau et Brulle, ibid.
Physoscelus St. Fargeau et Brulle, ibid.
Ectemnius Dahlbohm, Hym. Eur i, 1845.
Brackymerus Dahlbohm, ibid.
Megapodinm Dahlbohm, ibid.
Anothyreus Dahlbohm, ibid.
Podagritus Spinola, Gay’s Hist. Chili, vi, Atlas (zool.), PI. II, fig. 6, 1854.
Trachelosimus Morawitz (Group), Bull. Acad. Imp. Sciences, St. Petersburg, ix, 1866.
Tracheliodes Morawitz (Group), ibid.
Cupkopterus Morawitz (Group), ibid.
Clytochryms Morawitz (Group), ibid.
Ceeloerabro Thomson, Hym. Skand. iii, 1874.
Hoplocrabro Thomson, ibid.
Microcrabro Saussure. Graudidiers Hist. Madagascar xx, 1890.
Mesocrdbro Verhoeff, Entom. Nachrichten, xviii, 1892.
Head large, generally quadrate or subquadrate, sometimes more
transverse, its posterior margin always more or less margined, some¬
times, however, indistinctly (group pedicellatus) ; eyes naked; ocelli
distinct, forming a triangle or a curved line ; face depressed ; man¬
dibles dentate, or unarmed internally, externally entire, at apex
either bidentate in both sexes, tridentate in some males, or simple
(group pinguis) ; antennae 12-jointed in female, and in the male of
many species, although the normal number in this latter sex is 13 ;
flagellum subject to many modifications in the male, being entire,
emarginate or dentate beneath, or greatly dilated and fringed (group
largior) ; pronotum transverse, short, rounded or dentate laterally,
notched medially ; dorsulum convex, the parapsidal grooves usually
distinct, or represented by ridges; episternum mesopleuralis with a
very strong ridge anteriorly, sometimes extending on and bounding
NORTH AMERICAN IIYMENOPTERA.
135
anteriorly the mesosternum, and in some species entirely absent,
epimerum mesopleuralis separated from the episternum by a strong,
generally foveolated furrow, armed with a strong crest just anterior
to the medial coxae, which is sometimes represented simply by a small
pointed prominence (groups ventralis and hilaris), or is absent
(groups pinguis to pedicel lotus inch) ; middle segment marked by a
longitudinal central furrow and usually by a curved one which en¬
closes its upper surface, posterior face with or without a lateral ridge,
sides flat or depressed, divided sometimes by a medial, longitudinal
furrow. Legs in female simple, never very strongly spinose, in the
male subject to great variation, the fore trochanters being sometimes
spined, the fore femora simple, dentate at base beneath, armed with
a long spine beneath between base and middle, or flattened and
dilated basally, fore tibiae simple, or bearing a large vari-shaped
shield as in groups tenuiglossus and largior, fore tarsi simple, flat¬
tened, dilated, or distorted (group largior) ; medial tibiae with one
spur, first joint of medial tarsi simple, or having a peculiar form
and its length variable ; hind tarsi simple, the first joint, however,
varying in length in some cases; anterior wings consisting of a
median, submedian, a marginal, one cubital (submarginal) and
two discoidal cells, costal cell closed, the second discoidal is generally
much shorter than the first, although in some groups is of the same
length ; hind wings with a median and submedian cell, the latter
being much shorter than the former. Abdomen elongate, convex
above and beneath ; segments even, or contracted at base and apex
(group interruptus), the first segment varying from petiolate to
almost sessile ; in the petiolate form it is longitudinally furrowed at
base, and in the more sessile forms with a strong basal depression,
which is bounded outwardly by a ridge ; female only with a pygidial
enclosure, except in one group ( pinguis), the form of which varies —
sometimes broad, flat, again much contracted and deeply channeled ;
last dorsal segment of male with or without a medial furrow ; sculp¬
ture very variable.
1. Group interruptus.
The species of this group have the bodies, particularly the head
and thorax, very coarsely sculptured, being covered usually with
great, coarse punctures, which on the dorsulum, seutellum and meso-
pleurse are often interspersed with strong striae and the sides of the
middle segment are usually coarsely striated. The medial produced
TRANS. AM. ENT. SOC. XXII.
MAY. 1895.
136
WILLIAM J. FOX.
portion of the clypeus is longer and narrower than in any of the
succeeding groups having tire clypeus so shaped. In the male the
flagellum is not dentate or emarginate beneath, the fore femora are
armed with a tooth beneath near the base, the fore tarsi are slightly
flattened, but not broadened, and the first joint of medial tarsi is
somewhat enlarged near the base, giving the joint a somewhat sinn-
ated appearance.
1. Crabro ciuctellus n. sp.
9 . — Head strongly punctured, particularly on the front, the punctures closest
and finest behind the ocelli and on the cheeks ; pronotum very strongly developed,
larger by far than in any of the allied species and armed with a large tooth on
each side ; scutellnm more striated than punctured ; middle segment above with
coarse, longitudinal striations, the posterior face with transverse ones, sides
coarsely, but more evenly striated, upper surface separated from the posterior face
by a transverse series of large fovese ; fore and medial femora somewhat angular
beneath near the base; first dorsal abdominal segment with tolerably strong,
separated punctures, those on segments 2-5 finer and more even, second ventral
in the middle with large, sparse punctures. Black; scape, pedicel lum, pronotum,
tubercles, episternum mesopleuralis more or less, ^ small spot above on epimerum
mesopleuralis sometimes absent (as are likewise spots on metapleurae, upper and
posterior surfaces of middle segment), scutellnm with two dots, one on each side
just anterior to it, metanotum, hind coxae beneath, apex of trochanters, femora
except a black spot on upper surface of fore and medial femora at base and a dark
streak on posterior surface of hind pair, tibiae, tarsi (apical joints darker), a broad
band on dorsal abdominal segments 1-5, a spot on each side of the sixth, and
ventral segments 2-5, more or less, generally almost entirely, bright yellow ; pu¬
bescence of face and clypeus with a golden tinge. Wings subhyaline, with a
slight yellowish cast, the nervures and stigma pale testaceous. Length 9 10 mm.
Nevada. Four specimens labeled cinctellm Cress., evidently a
manuscript name. A handsome and striking species.
2. Crabro interrupt iim St. Farg. et Br.
Solenius interruptus St. Farg. et Brulle, Ann. Soc. Ent. Fr. iii (1834), p. 716, £>.
Crabro conjluentns Say, Bost. Journ. N. H. i, p. 376, 9 S •
Crabro clubius Smith, Cat. Hym. Brit. Mus. iv, p. 417.
Crabro conjiuentus Smith, ibid. p. 420.
Crabro interruptus Packard, Proc. Ent. Soc. Phila. vi. p. 74, % 9 ■
9 . — Head covered with coarse, separated, deep punctures, those between the
ocelli and occiput scarcely less coarse or closer than those of the front, the cheeks
also coarsely punctured ; pronotum not remarkably large, the lateral tooth small ;
scutellum marked by large punctures in addition to the striae ; middle segment as
described in cinctellm. Abdomen with strong, separated punctures, but less coarse
than those of the head. Black ; scape, pedicellum, spots on pronotum narrowly
separated, tubercles, line on scutellum and metanotum, that on the former some¬
times wanting, apex of femora, tibiae (sometimes darker internally), tarsi (apical
joints darker), an elongate, narrow spot on each side of dorsal segments 1-4, that
on segment 1 more or less sinuated, and a shorter and broader spot on each side
NORTH AMERICAN HYMENOPTERA.
137
of segment 5, yellow : no yellow on mesopleurse or ventral segments of abdomen ;
pubescence of face and clypeus silvery. Wings subhyaline, somewhat darker
apically, nervures and stigma testaceous. Length 8-11 mm.
% .—Coarsely sculptured like the female, but more strongly so; flagellum sub-
clavate, not widened basally ; pronotum rather strongly dentate laterally ; middle
segment very coarsely rugose, particularly above, the sides with coarse, more or
less irregular striations. Abdomen with one, more rarely with two or three ter¬
minal bauds. Length 8-10 mm.
Occurs from Canada to Florida Ash mead ) ; Illinois; Nebraska
(Barber) ; Colorado ; Montana. Probably our most common species,
and subject to some variation ; the spots on pronotum are sometimes
wanting and the femora are rarely yellow in greater part. A female
specimen from District of Columbia (Ashmead) has the pronotum
scarcely dentate as in producticollis, but is too coarsely sculptured
for that species. The smooth bodied specimen mentioned by Packard
is evidently a female of producticollis (= 4 -maculaius Prov. ).
3. C'rabro bell IIS Cress.
Crabro bellus Cresson, Proc. Ent. Sue. Phila., iv, p. 481, 9 .
C'rabro atrifrons Cresson, ibid. p. 483, % .
9 .—Head with strpng punctures, those between the ocelli and occiput, how¬
ever, close and confluent, those on the front large and sparse; thorax as in inter-
ruptus, but a little less coarsely sculptured ; abdomen distinctly punctured, but
more finely and closely punctured than in interruptus. Black ; scape, pedicellum,
two spots on pronotum, sometimes wanting, tubercles, scutellum and metanotum
sometimes (usually black, however), tips of femora more or less, tibiae except dark
spot internally, tarsi (apical joints darker), a long, narrow spot on each side of
dorsal abdominal segments 1 5, those on segment five nearly always united, and
those on segment one sinuous, all yellow; no yellow on mesopleurse or ventral
segments of abdomen ; pubescence of clypeus silvery ; wings subhyaline, rather
strongly tinged with yellow basally, particularly along the costa, nervures and
stigma yellowish testaceous. Length 9-11 mm.
% ■ — This sex differs from interruptus in the same characters as does the 9 : the
finer sculpture and in possessing one or two more terminal bauds on abdomen ;
wings darker than in the 9> and not yellowish; pronotum with a large tooth
laterally. Length (1-8.5 mm.
Colorado ; Nevada ; Mt. Hood, Oregon ; W ashington. Very
close to interrupt m, but more finely sculptured, and the spots on ab¬
dominal segments 4 and 5, at least on 5, united. The thorax is
usually sparsely spotted in both sexes, while in interruptus the usual
markings are present ; this is, however, variable in both species.
The width of the elypeal production varies and the medial lobe is
often armed with a strong tooth on each side of the medial process;
this character occurs also in the other species of the group but is less
developed.
TRANS. AM. ENT. SOC. XXII.
(18)
MAY, 1895.
138
WILLIAM J. FOX.
4. Crabro prodiidirollis Pack.
Crabro producticottis Packard, Proc. Ent. Soc. Pbila., vi, p. 76, .
Crabro i-punctntus Provancher, Hym. Quebec, p. 653.
Crabro A-maculatm Provancher (non Fabr.), ibid. p. 655, 9 •
9 • — Head covered with strong, even, distinctly separated punctures, sparse on
the cheeks and large and deep on the front ; pronotum not so sharply margined
as usual, the lateral tooth extremely small ; thorax, perhaps, a little less coarsely
sculptured than in the allied species; middle segment somewhat rugose, but not
coarsely, the not strongly, sometimes indistinctly striated, longitudinal central fur¬
row of upper surface rather broad, and the transverse series of fo ve:e well
marked; abdomen finely and closely, though distinctly punctured, strongly
glabrous in comparison to the other species of the group. Black ; scape, pedi-
cellum more or less, two spots on pronotum, tubercles, scutellum more or less
(rarely black), tips of femora, tibiae, sometimes dark internally, tarsi (apical joints
darker) and a spot on each side of dorsal abdominal segments 2-5, widely sepa¬
rated, and sometimes a much smaller spot on each side of segment 1, yellow;
pubescence of clypeus silvery; wings subliyaline, but little darker apically.
Length 8-11.5 mm.
^ . — Head with coarse punctures, those between the ocelli and occiput con¬
fluent; cheeks very sparsely punctured, polished; flagellum distinctly widened
near the base ; space between eyes at base of clypeus distinctly less tban that
between the hind ocelli, and less than in the allied species; thorax very coarsely
sculptured, scutellum longitudinally rugose ; middle segment covered with coarse
rug®, the sides coarsely striated ; fore femora with lower margin strongly angular
just beyond the middle, toothed near the base as usual ; first joint of medial
tarsi more strongly sinuous than in of interruptus and bellus ; abdomen but
little more strongly punctured than in the female; colored like the 9 . except
that the scape is dark posteriorly, the thorax excepting the tubercles is rarely
maculated, the spots on abdomen are longer and narrower and those on segments
5 and 6 form usually though not always, bands. Length 6-8.5 mm.
Canada (Harrington); New Hampshire (Mrs. Slosson); New
York; New Jersey; Illinois (Nason); Texas; Washington; Van¬
couver. A specimen from Illinois is more strongly sculptured than
usual, but still retains the shiny appearance, particularly of the ab¬
domen, which is a good superficial character in this species. Pro-
vancher’s C. 4 -punetatns, which the same author calls 4 -maeulatus
on p. 655 of his work, I unite with this species, as it is evidently the
female. This latter sex has also been given the name aciculatus
Cress, non Prov.), but Cresson never published a description of it.
2. Group montauus.
Differing from the preceding group by the less coarsely sculptured
bodies, the abdomen being very finely punctured. The dorsulum is
closely and not very coarsely striato-punctate, tending in the males
to rugose. Medial production of clypeus shorter and broader than
NORTH AMERICAN HYMENOPTERA.
139
in group confiuentus, Flagellum of £ with the first four joints
strongly contracted basally and produced at apex, the first and fourth
joints most strongly ; fore femora ( £ ) beneath at the base somewhat
enlarged, the fore tarsi are strongly flattened and broadened, the
first joint of medial tarsi variable in length and shape, but never
sinuous.
5. Crabro moiitaniis Cress.
Crabro montanus Cresson, Proc. Ent. Soc. Phila., iv, p. 484, 9 .
Crabro cri status Packard, ibid, vi, p. 101, .
Crabro cubiceps Packard (non Tasch.), ibid. p. 105, 9 •
Crabro effosus Provancher (non Pack.), Hym. Quebec, p. 660, £ (non J).
9 . — Space between eyes at base of clypeus about equal to the combined length
of joints of joints 1 and 2 of the flagellum ; pronotum sharply margined ante¬
riorly, distinctly furrowed in a transverse manner, with a rather large, sharp
lateral tooth ; dorsulum tolerably strongly striato-punctate on anterior portion,
posteriorly with separated punctures; scutellum sparsely punctured, striated behind,
mesopleurse rather strongly striated ; upper surface of middle segment separated
from the posterior face by a tolerably strong ridge, with strong, somewhat irreg¬
ular, but tolerably longitudinal, striae, the medial furrow not broad, posterior face
finely punctured, apically with some coarse, transverse striae, not ridged laterally,
sides delicately striated ; abdomen very finely punctured, the second ventral seg¬
ment with large, sparse punctures. Black ; mandibles basally, more or less,
greater part of scape, sometimes entirely, two spots on pronotum, tubercles, scu¬
tellum and metanotum in part very rarely, a small spot at tip of fore and medial
femora sometimes, tibiae externally more or less, and a spot at each side of dorsal
abdominal segments 1-5, yellow or whitish yellow, the spots on segment 1 very
small and sometimes wanting, those on segment 2 largest, those on segment 5 more
rounded and never uniting; tarsi black or dark testaceous. Length 7-10 mm.
£ . — Head rather strongly and closely punctured, the space between the eyes at
base of clypeus greater than in the 9 - but not greater than the combined length
of flagellum joints 1 and 2, as those joints are longer in the than in the 9 :
space between hind ocelli distinctly less than that between them and nearest eye-
margin ; head strongly margined posteriorly; pronotum large, very strongly
crested anteriorly, the lateral tooth large and sharp; dorsulum coarsely rugose
irregularly so on anterior portion, longitudinally posteriorly ; middle segment
more coarsely sculptured above than in the 9 • the posterior face coarsely trans¬
versely striated throughout, the sides coarsely striated also; first joint of medial
tarsi shorter than the three following joints united, distinctly dilated a little
beyond the middle, but again narrowed to apex, second joint strongly curved and
produced at apex within ; abdomen somewhat more distinctly punctured than in
the 9 ! colored and marked as in that sex. but differing in the following points :
metanotum yellow, fore femora with a yellow streak posteriorly, anteriorly more
or less reddish yellow, markings of the abdomen larger, more approximate, the
fifth and sixth segments banded. Length 6-7 mm.
Canada to New York; Illinois; Michigan (Davis); South Da¬
kota (Aldrich) ; Colorado; Nevada; Mt. Hood, Oregon; Washing-
TRANS. AM. ENT. SOC. XXII.
MAY, 1895.
140
WILLIAM J. FOX.
ton. C. cublceps, I unite with montanus us it differs only in the
color of the scape, a trivial character and in this species a variable
one. C. cristatm is without doubt the male of montanus. I have
examined over eighty specimens of this species mostly from the
West which indicates a common occurrence.
fi. Crabro atriceps Cress.
Crabro atriceps Cresson , 1. c., p. 483, 9 •
9 . — Space between the eyes at base of clypeus fully equal to the length of
joints 1 and 2 of the flagellum; pronotum not margined, the lateral tooth small
and blunt, transverse furrow indistinct; dorsulum anteriorly with very close
punctures, indistinctly interspersed with stria;, posteriorly the punctures less
close ; mesopleime rather coarsely and closely striated ; middle segment with the
ridge separating the upper surface from the posterior face indistinct, medial fur¬
row broad, distinctly widened at the middle, posterior face finely roughened or
rugose, without transverse striae apically and not ridged laterally, sides deli¬
cately striated ; abdomen finely punctured, but more distinctly than in montanus.
Black, including the mandibles and scape ; two spots on pronotum, tubercles, line
on metanotum, sometimes broken, or absent, spot at the apex of the four anterior
femora, sometimes wanting, a line on the outer side of tibiae, and an elongated
spot on each side of dorsal abdominal segments 2-5, those on segment 5 always
united, yellow ; no spots on the first segment; the tarsi black ; wings subhyaline
throughout, Length 7-9 mm.
. — Head with tolerably fine and close punctures, the hind margin not strongly
margined ; space between the hind ocelli scarcely less than that between them
and the nearest eye-margin ; pronotum larger than in the 9 > but smaller than in
the ^ of montanus, not very strongly crested and the lateral tooth short; central
furrow of medial segment even broader than in the female, the posterior face with
rather coarse transverse striations, sides strongly striated ; first joint of medial
tarsi about as long as the three following united, but slightly dilated medially,
the apex a little produced within, second joint strongly curved and produced at
apex within; abdomen distinctly punctured ; colored and marked as in the 9>
the abdominal markings, however, longer, narrow and more sinuous, and those
on segment four almost united. Length 7 mm.
Colorado. The uniting of the spots on fifth abdominal segment
and black color of scape are good superficial characters in separating
this from montanus. A £ specimen from Nevada, I refer with some
doubt to this species ; the abdominal spots are small and consequently
widely separated and the pronotum appears more sharply dentate.
7. Crabro brunneipes Pack.
Crabro brunneipes Packard, 1. c., p. 102, .
9 . — Space between the eyes at base of clypeus about equal to the length of
joints 1 and 2 of the flagellum ; pronotum margined, but not strongly so, the
lateral tooth small, transverse furrow distinct though narrow ; dorsulum ante¬
riorly rugoso-punetate, posteriorly with strong separated punctures, those on the
scutellum sparser; mesopleime coarsely striated ; middle segment with the ridge
NORTH AMERICAN HYMENOPTEEA.
141
separating the upper surface from the posterior face well developed, medial furrow
broadened, widened medially, upper surface much more coarsely striated than in
atriceps and the striae fewer, posterior face finely rugose, distinctly ridged laterally,
sides rather indistinctly striated : abdomen more finely punctured than in atriceps.
Black, including the mandibles: scape more or less, two small spots, widely sepa¬
rated, on pronotum, tubercles, metanotum, spot ou fore and medial femora at
apex, sometimes lacking, tibiae externally, sometimes the hind pair in greater
part, a large spot on each side of dorsal abdominal segments 2-5, more or less
pointed internally, except those on the fifth, which are truncate and always sepa¬
rated, yellow ; tarsi black , wings pale fusco-hyaline, nervures and stigma black.
Length 6.5-8 mm.
% . — Head finely and closely punctured, the hind margin tolerably well mar¬
gined ; space between hind ocelli apparently slightly greater than that between
them and the nearest eye-margin ; middle segment above coarsely rugose, poste¬
rior face with somewhat irregular, coarse, transverse striations, the lateral ridges
present but imperfectly developed, sides strongly striated; first joint of medial
tarsi about as long as the three following united, less dilated medially than in
atriceps , second joint curved and produced at apex ; abdomen punctured as in the
female ; colored and marked like the female, the spots on pronotum sometimes
absent, those on the abdomen smaller than in the other sex and always widely
separated. Length 6-7 mm.
M nine; New Hampshire; Pennsylvania; Illinois (Robertson);
South Dakota (Aldrich). The separated spots on fifth abdominal
segment, coarser sculpture and darker wings are points in which this
species differs from atriceps.
8. Crabro corrugatus Pack.
Crabro corrugatus Packard, 1. c., p. 107, 9 .
9- — Space between eyes at base of clypeus somewhat less than the combined
length of flagellum joints 1 and 2, the space between hind ocelli slightly greater
that between them and the nearest eye-margin ; pronotum with the transverse
impression broad, especially toward the sides, sides not deep, the lateral tooth
small and blunt; dorsulum finely striato-punctate, most closely anteriorly, scu-
tellum more coarsely so ; mesoplcuraj finely striato-punctate, more finely than the
posterior portion of the dorsulum ; middle segment above covered with very
coarse, irregular folds or rugae, whose strength varies, posterior face tolerably
well enclosed by a surrounding ridge, with coarse, transverse striations on apical
portion, sides finely, though distinctly striated : abdomen very finely and closely
punctured. Black; large spot on mandibles basally, scape entirely or in part,
large spots on pronotum, tubercles, metanotum, tips of femora more or less, tibiae
entirely or spotted internally, sometimes the first tarsal joint in part, and large
spot at each side of dorsal abdominal segments 2 5, those on the latter separated
sometimes very nearly united, though usually well separated, yellow ; tarsi testa¬
ceous; wings subhyaline, a little darker apically, nervures and stigma testaceous.
Length 6-7 mm.
% . — Head strongly and sharply margined posteriorly ; pronotum broadly fur¬
rowed as in the 9 > middle segment with the ridge enclosing posterior face very
strong, the latter with coarse, transverse striations throughout, sides rather
TRANS. AM. ENT. SOC. XXII.
MAY. 1895.
142
WILLIAM J. FOX.
coarsely striated ; first joint of medial tarsi longer than the three following joints
united, the second joint as usual, strongly produced at apex ; colored and marked
like the 9 , the fore femora, however, streaked with yellow posteriorly and red¬
dish yellow, in front; spots on abdomen smaller and widely separated. Length
5 mm.
Canada (Harrington) ; New York ; Virginia. The width of the
space between eyes at base of clypeus, broad impression of pronotum,
distinctly striated scutellum, finer sculpture of dorsulum, etc., dis¬
tinguish this species from the preceding ones.
9. t'rabro pamiliis Pack.
Crabro parvulus Packard, 1. c., p. 108, 9 •
9 . — Space between the eyes at base of clypeus but little less than the length
of flagellum joints 1 and 2 united, the space between the hind ocelli somewhat
greater than that between them and nearest eye-margin ; transverse furrow of
pronotum not very broad, but deep; dorsulum finely striato-punctate ; scutellum
sparsely punctured, the striae confined to the sides and posterior portion ; middle
segment above with strong, but not coarse, oblique striae, posterior face not dis¬
tinctly enclosed, the Surrounding ridge weak, with coarse transverse striations on
apical portion, sides delicately striated : abdomen finely and closely punctured.
Black, the thorax except tubercles, rarely spotted ; spot on mandibles basally,
scape in part, tubercles, spots on pronotum and metanotum rarely, tips of fore and
medial femora slightly, sometimes, line on tibiae externally, and a spot at each
side of dorsal abdominal segments 2 5, all widely separated, yellowish ; tarsi tes¬
taceous; wings subhyaline, nervures and stigma testaceous. Length 6-7 mm.
% . — Occiput distinctly, though not very strongly margined posteriorly ; pro¬
notum furrowed as in the 9 - dorsulum punctato-striate ; scutellum striato-punc¬
tate throughout; middle segment much more coarsely striated than in the 9>
particularly above and on the sides, the posterior face covered with coarse, trans¬
verse strife, distinctly enclosed, the surrounding ridge, however, less strongly
developed than in the % of corrugatus ; first joint of medial tarsi distinctly lon¬
ger than the three following united, the second joint curved and produced as
usual ; mandibles, and much the greater part of medial and hind tibise black ;
thorax, except tubercles, very rarely maculated ; abdominal markings smaller than
in the 9 j fore femora with a line posteriorly, yellow. Length 5 6 mm.
South Dakota. (Aldrich) ; Colorado ; Nevada ; Mt. Hood, Oregon ;
Washington. Distinguished from corrugatus by the differently fur¬
rowed pronotum, finer sculpture of middle segment, color of tibiae
and rarely maculated thorax. The head is more closely punctured
in the % in this species than in corrugatus and pauper.
10. t’rabro pauper Pack.
Crabro pauper Packard, 1. c., p. 95, % .
. — Joints 1-3 of flagellum more strongly produced beneath than in the other
species of the group ; occiput distinctly, though not very strongly margined pos¬
teriorly, less strongly than the cheeks; transverse furrow of pronotum broader
than in parvulus , narrower than in corrugatus : dorsulum and scutellum rather
NORTH AMERICAN HYMENOPTERA.
143
finely striato-punctate throughout ; middle segment above coarsely and irregu¬
larly rugulose, posterior with coarse transverse striations, tolerably well enclosed,
the surrounding ridge, however, not as well developed as in corrugatus %, ; first
joint of medial tarsi not much longer than the following three united, the second
joint as usual; abdomen longer than the head and thorax, finely and closely
punctured. Black, including the mandibles; scape in part, two spots on pronotum,
tubercles, line on metanotum, sometimes wanting, greater part of anterior portion
of femora, and a line posteriorly, tips of medial pair, tibise except a variable spot
internally, and a spot on each side of dorsal abdominal segments 2 6, yellow.
Length 7 mm.
Maine (Packard); Virginia. In the more strongly produced
basal joints of the flagellum this species approaches those of the
following group. It is a more elongate species than corrugatus, and
the enclosing ridge of posterior face is feebler.
3. Group nigrifrons.
Body finely sculptured, particularly the abdomen, which is indis¬
tinctly punctured ; dorsulum finely and closely striato-punctate,
tending to closely punctured in the males ; mesopleurse delicately
and closely striated ; medial production of elypeus distinct, in the
males more so than in those of the preceding group ; flagellum of
2 with joints 1 and 2, or 1-4 very strongly produced or toothed
beneath, joints 1 and 2 solidified forming one long joint ; fore femora
( £> ) not enlarged or produced at the base beneath, fore tarsi not
flattened, the first joint of medial tarsi armed within near the apex
with a tooth or spine ; last dorsal segment ( % ) not furrowed as
usual ; pubescence of front and elypeus ( 9 ) golden, silvery in the
males.
11. Crabro obscurus Sm.
Crabro obscurus Smith, Cat. Hym. Brit. Mus., iv, p. 418, 9 h •
Crabro denticulatus Packard, 1. c., p. 97, % .
Crabro obscurus Packard, ibid. p. 99, 9 •
Crabro effosus Packard, ibid. p. 104, 1, .
Crabro effosus Provancher, Hym. Queb., p. 660, 9 (non
9 . — Head fiueiy and closely punctured, first joint of flagellum fully as long as
the three following united ; space between hind ocelli about equal to that between
them and nearest eye-margin ; dorsulum fiueiy and closely striato-punctate, the
scutellum more sparsely so ; mesopleurse more distinctly striated than the dor¬
sulum ; upper surface of middle segment with coarse, somewhat oblique striations
aud separated from the posterior face by a series of strong, transverse fovea, its
central furrow broad aud transversely ridged, posterior face finely rugose, trans¬
versely and more coarsely so on apical portion, rather distinctly ridged laterally,
sides with tolerably coarse striations. Black ; large spot on mandibles, scape en¬
tirely, base of pedicellum, two spots on pronotum, tubercles, metanotum, scutellum
TRANS. AM. ENT. SOC. XXII.
MAY, 1895.
144
WILLIAM J. FOX.
sometimes, tips of fore and medial femora, tibiae, except apex of hind pair and
an inconstant dark spot on other pairs, tarsi (apical joints darker) and a long,
narrow, somewhat sinuous spot on dorsal abdominal segments 2-5, yellow, the
spots on segment five usually united ; first segment rarely spotted, tegulae entirely
testaceous. Length 8-9 mm.
% . — First two joints of flagellum strongly dentate beneath, the third and
fourth joints indistinctly so, the combined length of joints 1 and 2 as great as
that of the following four joints united ; head more strongly punctured than in
the female; dorsulum closely and rather strongly punctured, somewhat granular
in appearance; middle segment sculptured as in the 9, but more coarsely, in
some specimens the upper and posterior faces are coarsely rugose, central furrow
variable, in some specimens absent, or indistinct ; marked and colored about as
in the 9' the pedicellum and mandibles black. Length 6-7 mm.
Hudson Bay (Smith); Canada; New Hampshire; Connecticut
(Norton); New York; New Jersey; Pennsylvania; District of
Columbia; Virginia; Louisiana; Illinois and Michigan (Gillette).
Three females I refer here with some doubt ; they are smaller 6-7
nun., and the space between the hind ocelli distinctly greater than
that between them and nearest eye-margin. The C. obscurus de¬
scribed by Provancher is evidently a % chrysarginus ; and the S
described by the same author under the name effosus I take to be %
of montanus (= cristatus). Packard’s denticulatus is evidently the
% of obscurus, and his effosus simply an abnormal form of the first
mentioned species.
12. C’rabro gracilissiintiM Pack.
Crabro contiguus Cresson (in part), 1. c., p. 484, 9*
Cralrro grocUisshnus Packard, 1. c., p. 78, % .
9 .- — Differs from that of obscurus as follows : dorsulum and seutellum a little
more strongly sculptured ; mesopleune less finely striated ; upper surface of mid¬
dle segment with distinct, though not coarse, irregular striatious, not separated
from the posterior face by fovea*, lateral ridges of posterior face feebly ridged,
sides finely striated ; colored similarly to obscurus, the metanotal spot usually
wanting, although sometimes present: abdominal spots variable, all united or
nearly so in some individuals and others with the first segment maculated ; teguke
with a yellow dot anteriorly ; pedicellum entirely black. Length 8 11 mm.
% .—This sex is very close to that of obscurus : the sculpture of middle segment
is not so coarse, the transverse series of fovea* separating the upper surface from
the posterior face is narrower and not quite so strong, and the lateral ridges of
posterior face are scarcely developed : the abdominal markings vary as in the 9 ,
and the spot on the tegula* is not always present. Length 6-8 mm.
South Dakota (Aldrich); Colorado; Nevada; California; Mt.
Hood, Oregon ; Washington. The color of the markings varies
from pale to deep yellow. Cresson confused the female of this spe¬
cies with C. contiguus ; this is shown by the types of that species.
NORTH AMERICAN HYMENOPTERA.
145
13. Crabro n igri Irons Cress.
Orabro advena (in part) Smith, Cat. Hym. Brit. Mus., iv, 421, % (non 9 ).
Crabro nigrifrons Cresson, Proc. Ent. Soc. Pliila., iv, 482, % .
Crabro contigims Cresson, ibid. p. 484, 9
9 • — Head finely and closely punctured ; first joint of flagellum scarcely as
long as the three following ones united ; frontal impressed line distinct; dorsulum
and scutelluin finely and closely striato-punctate ; mesopleune very finely and
closely striated, rather subtilely so; middle segment above with not very strong
longitudinal striations, the central furrow long and narrow, upper surface not
separated from posterior face by foveae, posterior face delicately and transversely
striated, without any trace of lateral ridges, sides delicately striated. Black ;
large spot on mandibles, scape entirely, pedicellum in part, two variable spots on
pronotum, tubercles, spot on scutellum and metanotum sometimes, although these
parts usually not spotted, tips of fore and medial femora more or less, and tips of
hind pair sometimes, tibiae except a dark spot internally, tarsi except apical joints
and a long narrow spot on each side of dorsal abdominal segments 2-4, those on
segment 4 united, yellow; the abdominal spots in rare cases, all united in bands,
or nearly so, in which event the spots are broader and the first segment spotted ;
tegulae entirely testaceous. Length 11-12 mm.
% . — First four joints of flagellum armed with a large tooth beneath, the com¬
bined length of the first two joints not greater than the length of the following
three joints united ; dorsulum more strongly sculptured than in the 9 , appearing
granulated anteriorly ; middle segment with the sculpture coarser than in the
other sex, central furrow broader, and the upper and posterior faces separated by
fovea;, posterior face rather coarsely and transversely striated, and with poorly
developed lateral ridges, sides not so coarsely striated as the posterior face ; first
joint of medial tarsi more strongly toothed or spined internally than in obscurus
and gracilissimus. Black, including the mandibles ; scape with a black spot poste¬
riorly ; thorax marked as in the 9 1 fore femora and tibife in front and the me¬
dial femora in part, rufous, the femora (except the hind pair) otherwise black
and yellow ; medial and hind tibiae yellow externally, black within ; flagellum
beneath, tegulae entirely and tarsi, except anteriors, testaceous ; abdominal spots
as in the 9 , but of course an additional pair, and the first segment spotted.
Length 9-11 mm.
Occurs from Canada to New York, westward to California and
Washington ; Colorado ; Nevada. The 9 specimens having the
abdominal spots united into bands have a yellow spot on the epister-
nuin mesopleuralis, not evident in the other forms ; they are from
California and Nevada.
4. Group sexmaculatus.
The three species contained in this group differ from all those pre¬
ceding by the medial portion of clypeus being rounded anteriorly,
and not produced into a truncated process ; abdomen indistinctly
punctured or impunctate ; pygidium with a lateral fringe of long,
thick hair; mesopleune rather coarsely striato-punctate; flagellum
(19)
TRANS. AM. ENT. SOC. XXII.
JUNE, 1895.
146
WILLIAM J. FOX.
of males with the fourth joint strongly emarginate beneath ; fore
tarsi f % ) distinctly flattened; and first joint of medial tarsi at the
most strongly produced at apex within.
14. Crabro sexmaculatus Say.
Crabro 6-macitlatus Say, Keating’s Narr. Exp. St. Peter’s River, ii, Appendix,
p. 341, 9.
Crabro sexmaculatus Packard, 1. c., p. 91, 9 1) •
9 . — Head with distinct punctures, closest anteriorly, tolerably well separated
behind the ocelli ; space between the hind ocelli about equal to that between them
and the nearest eye-margin ; lateral tooth of pronotum small, indistinct ; dorsulum
rather coarsely and closely punctured, the punctures on posterior portion but little
or not at all sparser than those on anterior; punctures of scutellum sparser;
mesopleuree coarsely striato-punctate ; middle segment above and posteriorly with
tolerably fine stria;, sides delicately striated, no trace of foveas between the upper
and posterior faces, the latter not at all ridged at the sides. Black ; spot on man¬
dibles, scape entirely or in part, two variable spots on pronotum, tubercles, line
on metanotum, scutellum in part sometimes, tips of femora in some cases, tibise
except a spot within, first joint of tarsi, an elongated spot on each side of dorsal
segments 2, 4 and 5, the third segment sometimes spotted and in some specimens the
spots on segment 5 are united, yellow or pale yellow ; size of spots on third seg¬
ment, when present, variable ; head, thorax and first segment of abdomen with
tolerably long and conspicuous pubescence; wings subhyaline, somewhat darker
apically. Length 9-12 mm.
'J, . — More coarsely sculptured than in the 9 i fi rst joint of flagellum distinctly
longer than the second ; middle segment with the upper surface and posterior
face separated by distinct fovese, posterior face transversely rugose, the lateral
ridges indistinct, but bounded outwardly by a foveolated furrow ; first and second
joints of medial tarsi strongly produced at apex within, almost spinose; colored
and marked like the 9 > with the following additions : fore femora and tibiae
reddish anteriorly, otherwise yellow and black ; first abdominal segment some¬
times spotted and with the spots on the other segments are in some cases united.
Length 8-10 mm.
Occurs from Canada to Delaware (Packard), westward to Cali¬
fornia and Washington, and is, perhaps, our commonest species.
Say mentions a yellow spot as occurring on the pleurae beneath the
wings ; this is not present in any of the 59 9 specimens before me ;
a large series of the £ also fails to disclose it. It may be that this
is not Say’s species, but his description is too insufficient to reach a
decision.
15. Crabro trifasciatus Say.
Crabro trifasciatus Say, Keating’s Narr. Exp. St. Peter’s River, ii, Appendix,
p. 342.
Crabro trifasciatus Packard, 1. c., p. 93, 'S 9 •
9.— Very close to sexmaculatus, though somewhat smaller; punctures of dor¬
sulum tolerably well separated on posterior portion ; upper surface of middle
segment separated from the posterior face by a rather distinct series of fovese,
NORTH AMERICAN PIYMENOPTERA.
147
rather strongly striato-punctate, posterior face rugose, indistinctly ridged laterally,
sides finely striated ; colored and marked as in sexmaculatus, but apparently not
subject to such variation of the abdominal markings ; third segment spotted
usually, more rarely immaculate. Length 8-9 mm.
% . — First joint of flagellum but little longer than the second ; middle segment
coarsely rugose, particularly above, the transverse series of fovea; separating the
upper surface from posterior face stronger than in the 9 : first and second joints
of medial tarsi scarcely produced at, apex within ; colored and marked like the
9 ; fore and medial femora black and yellow, not or very obscurely, reddish;
abdomen usually with three terminal bands, the third segment always spotted.
Length 6-9 mm.
Canada; Maine (Packard); Massachusetts; New Hampshire;
New York ; New Jersey ; Custer, South Dakota (Aldrich) ; Colo¬
rado. The % resembles greatly that of C. odyneroides, but the
abdomen is indistinctly punctured.
16. C’rabro paiicimaculatus Pack.
Crabro pcmcimacidatus Packard, Proc. Ent. Soc. Pliila., iv, p. 90. 9 •
9- — Head above with tolerably fine, even punctures, closer in front; space
between hind ocelli about equal to that between them and nearest eye-margin ;
pronotum not dentate laterally ; dorsulum closely and rugosely punctured, poste¬
riorly, however, a little less strongly; scutellum with strong, separated punctures;
mesopleune rugoso-striate ; middle segment rugoso-punctate, more rugose on
posterior face, the latter ridged at the sides, but not strongly, and separated from
the upper surface by a tolerably distinct ridge, which is not, however, always
present, sides finely striated ; first abdominal segment narrower than in sexmacu¬
latus and trifasciatus. Black ; mandibles except apex, scape in part, two spots on
pronotum, sometimes wanting, tubercles, variable spot on metauotum, fore and
medial tibiae externally, hind pair except a spot within and at apex outwardly,
basal portion of first joint of fore and medial tarsi sometimes, a short, more or
less ovate spot at each side of dorsal segments 2 and 4 and dot on segment 5 later¬
ally, yellow; tarsi and tegulse blackish; wings fusco-hyaline, paler basally, uer-
vures and stigma black ; head, thorax and first segment of abdomen not conspicu¬
ously hirsute. Length 7-8 mm.
Illinois; New Jersey in July; District of Columbia; Jacksonville,
Florida (Ashmead). This species approaches the following group
by the paucity of hair on the pygidial segment. The abdomen is
indistinctly punctured, however.
o. Group amber.
The species forming this group are distinguished by the distinctly
punctured abdomen, particularly the first segment, and by the females
lacking the coarse lateral fringe of hair on pygidial segment. Male
with the flagellum as in sexmaculatus group ; fore tarsi not flattened ;
middle segment, at least the posterior face, in % , laterally, with
strong fovea.', differing in this respect from the males of group chrys-
TRANS. AM. ENT. SOC. XXII.
JUNE, 1895.
WILLIAM J. FOX.
148
arginus. Head in both sexes with strong, separated punctures, ex¬
cept in one case ; sculpture of thorax in both sexes coarser than in
the allied groups.
17. Crabro stirpicolus Pack.
Crabro stirpicola Packard, 1. c., p. Ill, ^
9 . — Head with tolerably strong, separated punctures, close on the front, how¬
ever; pronotum indistinctly dentate at the sides; dorsulum rugose-punctate ante¬
riorly, on posterior portion the punctures well separated ; scutellum with large,
separated punctures ; mesopleune with large, scattered punctures, interspersed
with coarse striae ; middle segment above and behind coarsely striated, posterior
face with lateral ridges scarcely developed, sides indistinctly striated. Black :
spot on mandibles, scape, two spots on pronotum, tubercles, episternum meso-
pleuralis in part sometimes, line on scutellum and metanotum either or both of
which may be entirely black, tips of femora, tibiae entirely, or with a dark spot
within, basal joint of tarsi and an elongated spot on each side of dorsal abdominal
segments 2, 4 and 5, yellow ; third segment sometimes spotted, and in one speci¬
men the second segment only is spotted; apical tarsal joints testaceous; wings
dark subhyaline, paler basallv. Length 5 7 mm.
^ . — Head more strongly punctured than in the female ; pronotum indistinctly
dentate at the sides ; dorsulum and mesopleune more coarsely sculptured than in
the female; middle segment above coarsely rugose, less so on posterior face, the
latter separated from the upper surface by a distinct ridge, and ridged indistinctly
at the sides, sides strongly striated ; colored and marked as in the 9 • Length
5-6 mm.
Canada ( Provancher) ; New York ; New Jersey in August; Illi¬
nois; Michigan (Davis); West Point, Nebraska (Barber); Texas.
It is said to make its nests in the stems of raspberry.
18. Crabro spiniferus n. sp.
9 . — Head rather finely and closely punctured, more so in front, very strongly
margined posteriorly; pronotum armed with a long, sharp, tooth or spine on each
side; dorsulum coarsely punctured, closely so on anterior portion, posteriorly the
punctures separated ; scutellum with large, sparse punctures ; mesopleune coarsely
and closely striato-punctate ; middle segment closely striato-punctate above and
behind, much less coarsely so than the mesopleune, posterior face with lateral
ridges wanting, sides delicately striated ; abdomen closely and rather finely,
though distinctly punctured. Black ; large spot on mandibles, scape except a
spot posteriorly, pronotum, slightly interrupted! medially, tubercles, line on scu¬
tellum and metanotum, either of which or both may be wanting, tips of femora
more or less, tibue except a line within and apex of hind pair, first joint of tarsi
except apex, and a large spot at each side of dorsal abdominal segments 2-5, yel¬
low; apical tarsal joints blackish; wings subhyaline, paler basally. Length 7 8
mm.
^ . — Head closely punctured, hut a little, more strongly than in the 9 ! pro¬
notum strongly crested, sharply spinose laterally : middle segment with the upper
surface separated from the posterior face by a series of strong fo'vem, posterior
face transversely rugose, indistinctly ridged laterally, sides strongly striated ;
colored and marked as in the 9 - except that the scutellum and metanotum are
rarely spotted and the abdominal markings longer and narrower. Length 6-7 mm.
NORTH AMERICAN HYMENOPTERA.
149
Washington ; Southern California (O. B. Johnson and D. W.
Coquillett) ; Nevada ; Arizona ; Colorado. Easily distinguished by
the strong spine with which the pronotum is armed on each side.
19. Crab ro rufipes St. F. et Br.
Ceratocolus rufipes St. Farg. et Brulle, Arm. Soc. Ent. Fr. iii (1834), p. 741, 9 •
Crdbro rufipes Smith, Cat. Hym. Brit. Mus., iv, p. 418.
Crabro excavatus Fox, Ent. News, iii, p. 10, 9 ^> •
9- — Head with large, separated punctures, closer in front; space between the
eyes at base of clypeus somewhat less than the width of the latter in the middle :
space between bind ocelli about equal to or slightly greater than that between
them and the nearest eye-margin ; pronotum not dentate laterally ; dorsulum
rugosely punctured, sparsest posteriorly ; meso pleurae not as coarsely striato-
punctate as in scaber ; middle segment above coarsely and closely punctured,
posteriorly more or less rugose, sides coriaceous, indistinctly striated ; first and
second dorsal segments with large, separated punctures, those on the first strongest,
the punctures finer and closer on the other segments; second ventral segment
with the punctures less scattered and not as strong as in scaber. Black ; mandibles
except apex, scape, pedicellum, first joint of flagellum more or less, pronotum
narrowly interrupted medially, tubercles, episternum mesopleuralis in part, scu-
tellum, metanotum, fore and medial femora and tibiae in part sometimes, and a
spot at each side of dorsal abdominal segments 1-5, yellow ; the abdominal spots
variable : that on the first segment sometimes wanting and the others greatly
reduced in size, or the spots on segment 5 may be united into a band ; legs in
greater part, including the trochanters sometimes, entirely rufous, and the first
and second segments of abdomen frequently suffused with that color. Length
8-9 mm.
% . — Resembles greatly that of scaber, but the front is less coarsely and more
closely punctured, the punctures being more or less confluent ; space between eyes
at base of clypeus distinctly greater than the width of the latter in the middle ;
thorax about as in scaber; first joint of medial tarsi not curved; punctures of
second ventral segment finer and closer than those of the first dorsal ; colored
like the 9 • Length 9 mm.
Carolina (St. Fargeau) ; Georgia; St. Augustine (Johnson) and
Jacksonville (Ashmead), Florida. St. Fargeau gives the color of
the legs of this species as black, but this must be a mistake, or he
would not have named it rufipes.
20. Crabro scaber St. F. et Br.
Solenius scaber Lepelitier de Saint Fargeau et Brulle, Ann. Soc. Ent. Fr.
iii (1834), p. 715, % .
Crabro scaber Smith, Cat. Hym. Brit. Mus., iv, p. 418.
Crabro scaber Packard, 1. c., p. 114, 9 •
9 .■ — Head with strong, much separated punctures, closest in front ; space be¬
tween the eyes at base of clypeus equal to the width of the latter in the middle;
space between hind ocelli less than that between them and the nearest eye-margin ;
pronotum distinctly margined above, but very indistinctly dentate at the sides ;
dorsulum rugosely punctured, sparsest posteriorly ; mesopleune coarsely striato-
punctate ; middle segment above coarsely and closely punctured, the posterior
TRANS. AM. ENT. SOC. XXII.
JUNE. 1895.
150
WILLIAM J. FOX.
face with coarse rugse laterally forming large fovea;, which are more evident in
some specimens than in others, sides coriaceous; first and second dorsal segments
of abdomen with large, separated punctures, those on the first strongest, segments
3-5 with the punctures finer and closer ; second ventral with large, scattered
punctures. Black; an elongated spot on the mandibles within near the base,
scape, pedicellum, and sometimes two or three basal joints of the flagellum, pro-
notum, tubercles, metanotum, sometimes apex of femora and tibiae in part, a
broad band on dorsal abdominal segment 2, and a much narrower one on segments
3-5, frequently interrupted, broken into spots, or else wanting on one or more
segments, yellow; legs, including the trochanters in part or entirely, rufous;
wings subfuscous, pale basally. Length 9-10 mm.
% . — Sculptured like the J , but more coarsely, and the front with large sepa¬
rated punctures like the top of head ; space between the eyes at base of c.lypeus
slightly less than the width of the latter in the middle ; space between hind
ocelli about equal to that between them and the nearest eye-margin ; pronotum
strongly margined, with a large, blunt lateral tooth ; middle segment with a
transverse series of fovese separating the upper surface from the posterior face,
sides coarsely striated ; first joint of medial tarsi rather strongly curved ; punc¬
tures of second ventral segment finer and closer than those of the fii'st dorsal ;
colored and marked like the 9 j the first segment sometimes reddish. Length
8 mm.
Philadelphia (Lepelitier) ; Camden County, New Jersey, in July;
Georgia ; Texas.
21. Craforo texanus Cress.
Crabro texanus Cresson, Trans. Am. Ent. Soc., iv, p. 227, 9 •
9. — Head with strong, much separated punctures, which are closest in front;
frontal impressed line present: space between hind ocelli less than that between
them and nearest eye-margin, the space between eyes at base of clypeus at least
as great as the width of the latter in the middle ; pronotum distinctly keeled
above, longer than in centralis, and with a small lateral tooth ; dorsulum coarsely
punctured, rugosely so anteriorly ; mesopleurse rugosely punctato-striate, or rather
rugosely punctured, the episternal suture tolerably well foveolated ; middle seg¬
ment rugoso-puuctate, on the sides coriaceous ; abdomen above with strong, sepa¬
rated punctures, strongest on first segment ; second ventral punctured similarly
to the first dorsal. Black ; large spot on mandibles near base, scape, pedicellum
and sometimes part of first joint of flagellum, pronotum, tubercles, scutellum,
metanotum, apical third of femora, tibiae, tarsi, a band on dorsal abdominal seg¬
ments 2, 4 and 5, and a dot at each side of segment 3, yellow ; head above except¬
ing a sparse, erect pubescence, not pilose ; wings subfuscous, pale at base. Length
6-7.5 mm.
% . — Colored and marked like the 9 - which it greatly resembles, but there is
no yellow on episternum mesopleuralis and third dorsal abdominal segment; and
in this sex the sculpture is coarser; middle segment with a series of large fovem
dividing the upper surface from posterior face, the sides distinctly striated ; space
between eyes at base of clypeus distinctly greater than the width of the latter in
the middle ; first joint of medial tarsi scarcely curved ; second ventral abdominal
segment more finely and closely punctured than the first dorsal. Length 6 mm.
Texas; Carlinville, Illinois (Robertson).
NORTH AMERICAN HYMENOPTERA.
151
22. Crabro centralis Cam.
Crabro centralis Cameron, Biol. Cent.-Amer., Hym. ii, p. 146. Tab. ix, figs.
6. 6m, b, 9 'J) .
9 . — Head with strong, even punctures, which are closest and finer posteriorly,
frontal impressed line wanting, space between hind ocelli less than that between
them and the nearest eye-margin, the space between eyes at base of clypeus
slightly greater than the width of the latter in the middle; pronotum distinctly
crested above, armed with a small, though distinct tooth on each side; dorsulum
more coarsely punctured than the head, closely so on anterior portion ; mesopleurse
coarsely striato-punctate, the episternal suture not distinctly foveolate, being
crossed by a few ridges; middle segment above rugoso-punctate, but not very
coarsely, the posterior face marked by strong transverse folds or ridges, sides
rather strongly striated, less distinctly so medially ; first segment of abdomen
with large, separated punctures, the second segment more closely and finely punc¬
tured, and segments 3-5 even more closely, second ventral with coarse, scattered
punctures. Black including the tarsi ; small spot on mandibles on inner margin,
greater part of scape, pronotum, tubercles, metanotum more or less, a line on outer
side of tibiae, a band on dorsal abdominal segments 2-5, sixth segment entirely,
and ventrals 2-5 narrowly at apex, yellow ; a rufous streak on hind femora above ;
head above clothed with a dense, brownish pile ; wings subhyaline, darker apically,
with a strong yellow streak along the costa; abdomen with silvery sericeous pile.
Length 10 mm.
Mexico; Guatemala and Panama (Cameron); Las Cruces, New
Mexico (Cockerell). The only specimen before me seems to agree with
Cameron’s description of centralis, but the abdomen is strongly punc¬
tured, and not finely as stated by Cameron. However, the meaning
of fineness and coarseness is no doubt viewed differently by various
authors. I have not seen the $ , and Cameron does not mention it in
his description, although giving figures of the genitalia and antennae.
It is difficult to imagine why that author compares centralis to his
guerrerensis, which, judging from the figure, belongs to a widely
separated group.
6. Group decemmaculatus.
Distinguished chiefly by the l flagellum being entire, not dentate
or emarginate ; the fore tarsi are not flattened ; abdomen distinctly
punctured ; pygidium with a distinct lateral fringe ; head closely
and finely punctured. The females offer no characters by which
they may be separated from those of the chrysarginus group.
23. Crabro decemmaculatus Say.
Crabro 10-macidatus Say, West. Quart. Rep., ii, p. 78 ; Compl. Writ, i, p. 167.
Crabro coUinus Smith, Cat. Hym. B. M., iv, p. 420, .
Crabro aurifrons Smith, ibid. p. 420, 9 •
Crabro 10 -maculatus Packard, 1. c., p. 79, 9 •
Crabro aurifrons Packard (uec Smith), ibid. p. 80, ^ (non 9 )•
9. — Head with the punctures distinct, more separated than in Packardii; first
JUNE. 1895.
TRANS. AM. ENT. SOC. XXII.
152
WILLIAM J. FOX.
joint of flagellum, if anything, slightly shorter than the length of the two fol¬
lowing joints united ; pronotum not so sharply keeled as in the species mentioned
above, the lateral tooth small, scarcely developed ; dorsulum with large punctures,
sparsest posteriorly ; scutellum with large punctures ; mesopleurse strongly punc-
tato-striate. the episternal suture marked hy rather strong foveae ; middle segment
covered with coarse punctures, sparsest on upper surface, sides indistinctly
striated ; abdomen distinctly punctured, particularly on the first dorsal segment;
ventral segment 2 closely and finely punctured laterally, in the middle with
large, sparse punctures. Black ; mandibles except apex, scape, pedicellum, base
of first joint of flagellum, pronotum, tubercles, episternum mesopleuralis in part
(this spot sometimes wanting), scutellum anteriorly and two small spots, one on
each side just anterior to it, metanotum, apical portion of femora, tibiae, tarsi
except apical joints, a large spot on each side of dorsal abdominal segments 1-5,
those on the fourth and fifth sometimes uniting within, those on segment 2 usually
broadest, yellow ; basal portion of femora generally reddish, sometimes tending
to black, and again the femora are almost entirely reddish ; first abdominal seg¬
ment sometimes more or less rufous; wings subhyaline, darkest apically, on basal
portion faintly yellow. Length 13-15 mm.
'J, . — -Space between eyes at base of clypeus less than the width of the latter in
the middle; thorax more coarsely sculptured than in the 2? particularly the
middle segment, which is rugoso-punctate on posterior face, and the sides are
coarsely striated ; fore trochanters beneath produced into a sharp spine ; abdomen
more strongly punctured than in 9 ; colored and marked, like the 9 > hut very
variable: the yellow is frequently wanting on episternum mesopleuralis and scu¬
tellum; the tibiae and tarsi are sometimes almost entirely reddish, and in one
specimen there are no spots on the thorax and abdomen, except on pronotum and
tubercles; often the second, or second and third ventral segments have a small
lateral yellow spot, and the bands (usually three) on segments 4-6 are sometimes
broken. Length 10-12 mm.
Massachusetts (Packard) south to Florida and Texas; Colorado.
Smith’s aar if roiis is identical with this species. I also unite the auri-
frons of Packard with it, the description of which, said to be based
on a 9 agrees with % specimens ; thus it seems to me that the un¬
usual form of the 1 antennae in this specie^ has deceived Packard,
leading him to suppose his specimen was 2 when really of the other
sex. The atirifrons and collinus are surely synonymous with the
above, judging from the descriptions, and this view is strengthened
by the fact that Say’s 10-maculatas is not included in the list of the
species published by Smith.
24. Crabro I*aeltar«lii Cress.
Crabro Packardii Cresson, 1. c., p. 477, 9 (non 'J,).
9- — Head finely and closely punctured ; space between bind ocelli less than
that between them and nearest eye-margin, the space between eyes at base of
clypeus somewhat greater than the width of the latter in the middle ; first joint
of flagellum, if anything, slightly longer than the two following united ; pronotum
strongly keeled, the lateral tooth not large, though strong and distinct ; dorsulum
NORTH AMERICAN HYMENOPTERA.
153
very closely punctured, more coarsely so than the head ; mesopleurae tolerably
coarsely striato-punctate, the episternal suture rather strongly foveolate ; middle
segment finely striated, delicately so on the sides; abdomen finely punctured, the
second ventral with scattered punctures. Black ; mandibles except tips, scape,
pe'dicellum beneath and sometimes part of the first joint, pronotum almost en¬
tirely above, tubercles, episternum mesopleuralis in part, scutellum anteriorly,
two small spots, one on each side just anterior to it, metauotum, an elongato-ovate
spot, sometimes wanting, on each side of the middle segment posteriorly, femora
except their base and hind portion of posterior pair, tibije, tarsi except last two
or three joints, two spots on the first dorsal abdominal segment, frequently form¬
ing a band, longer spots on second and third segments pointed internally, also
united sometimes, a hand on segments 4 and 5, a spot on each side of the pygidial
segment and the ventral segments to a greater or less degree, bright yellow ; pu¬
bescence of front and clypeus silvery, with a slight golden tinge in some speci¬
mens ; wings with a strong yellow tinge on basal two-tliirds. Length 11-13 mm.
£ . — Head very closely punctured ; space between eyes at base of clypeus dis¬
tinctly greater than the width of the latter in the middle ; thorax more coarsely
sculptured than in the 9 , particularly the middle segment, whose upper surface
is rugoso-punctate, posterior face strongly punctured, the punctures interspersed
with a few striae, sides coarsely striated ; fore trochanters unarmed ; abdomen a
little more distinctly punctured than in the 9 i marked the same, but in the
specimens before me all the dorsal segments are banded, the two apical ones and
all the ventrals except the first being entirely yellow; wings yellower and pu¬
bescence of front and clypeus golden. Length 11-12 mm.
Colorado; Nevada; California; Mt. Hood, Oregon; Washington.
The 9 can only be distinguished from that of chrysarginus by its
richer livery and particularly by the ventral segments of abdomen
being maculated. The space between the eyes at base of clypeus is
somewhat greater in comparison to width of clypeus than in chrys¬
arginus, and the form is usually more robust. The yellow on each
side of middle segment is peculiar to the species, but cannot be relied
on because of inconstancy. The % of this species as described by
Cresson is referable to that of chrysarginus.
1 . Group chrysarginus.
The females of this group connot be distinguished from the de-
cemmaculatus group. The males differ by the flagellum having the
fourth joint emarginate and produced at apex beneath ; fore tarsi
not distinctly flattened.
25. C’rabro odynoroules Cress.
Crabro odyneroides Cresson, 1. c., p. 481, % .
9 . — Head scarcely narrowed posteriorly, rather strongly punctured, very
closely so on the front, which appears finely granulated ; ocelli forming a low
triangle, lower than in chrysarginus, the space between the hind pair distinctly
less than that between them and the nearest eye-margin ; first joint of flagellum
(20)
TRANS. AM. ENT. SOC. XXII.
JUNE, 1895.
154
WILLIAM J. FOX.
distinctly shorter than the following two united, about one-fourth longer than
the second joint; lateral tooth of pronotum small and indistinct; dorsulum com¬
pactly punctured or apparently strongly granulated : scutellum with strong, dis¬
tinct punctures; mesopleurse strongly punctato-striate, the punctures most promi¬
nent, the episternal suture scarcely foveolate ; middle segment above with tolerably
tine striations, posterior face sculptured somewhat similarly to the mesopleurse,
but more coarsely and the striae are less evident, sides delicately striated ; abdo¬
men distinctly punctured, the first dorsal segment strongly so, the remaining
dorsal segments finely and closely ; second ventral rather strongly punctured,
sparsely in the middle. Black ; mandibles except outer margin and apex, scape,
two spots on pronotum almost touching internally, tubercles, line on metanotum,
extreme tips of fore and medial femora, tibiae except a line within, tarsi, either
entirely or in part, a long narrow mark on each side of dorsal abdominal segment
2, almost touching within, a small spot at each extreme side of segment 3, and a
band on segments 4 and 5, that on the fourth sometimes interrupted medially, as
are likewise the spots on segment 2 connected, yellow : head and thorax with
tolerably dense, grayish hair; wings subhyaline. Length 10-11 mm.
^ . — Head rather coarsely punctured ; space between hind ocelli much less than
that between them and nearest eye-margin ; first joint of flagellum much shorter
the combined length of the following two joints united, about one-fourth longer
than the second joint, four basal joints together about one-fourth longer than the
six terminal ones united: lateral tooth of pronotum stronger than in the 9> the
dorsulum more coarsely sculptured; middle segment above coarsely punctato-
striate, the sides more coarsely striated than in the other sex ; fore femora beneath
at base not produced; first two joints of medial tarsi not curved, only slightly
produced apically, the first joint distinctly longer than the three following united ;
abdomen punctured as in the 9 > colored and spotted the same, sometimes the
small spots on segment 3 of abdomen are drawn out and almost touch within, and
the lines on segment 2 are unusually united ; wings paler. Length 8 mm.
Colorado ; Montana.
26. Crabro imbutus Fox.
Crabro imbutus Fox. Proc. Calif. Acad. (2), iv, p. 108, 9 •
cp . — Head finely punctured, but more distinctly so than in chrysarginus : frontal
impressed line almost obsolete above ; ocelli forming a curved line, the space be¬
tween the hind pair less than that between them and the nearest eye-margin :
first joint of flagellum scarcely as long as the two following joints united ; pro¬
notum strongly dentate at the sides; dorsulum with strong punctures, those on
posterior portion rather well separated, those of the scutellum even more so;
mesopleune rather coarsely striato-punctate, the episternal suture not foveolate;
middle segment rather coarsely striated, the sides delicately so; abdomen with
dorsal segments 2 5 finely and closely punctured, the first segment strongly punc¬
tured, the abdomen throughout much more distinctly punctured than in chrysar¬
ginus. Black ; mandibles except apex and outer margin, scape, pedicellum more
or less, pronotum entirely, tubercles, episternum mesopleuralis more or less, scu¬
tellum in part sometimes, a spot on each side just anterior to it, metanotum, fore
femora beneath and sometimes the apex of remaining pairs, tibise entirely or in
part, basal joints of tarsi, a peculiar, somewhat drepaniform spot on each side
of first dorsal abdominal segment, large wedge-shaped marks on second, some-
NORTH AMERICAN IIYMENOPTERA.
155
times connected, thus forming a band, broad band on dorsal segments d o, tbe
sixth on each side of pygidium. and a band on venti'als 2 5, that on the second
and fifth irregular, bright yellow; legs excepting the coloration noted, reddish,
including the trochanters ; front and medial part of clypeus with golden pubes¬
cence ; basal two-thirds of wings yellow, fuscous on remainder. Length 13-14 mm.
^ . — First joint of flagellum not nearly as long as the two following joints
united, the four basal joints united about as long as the six terminal ones com¬
bined ; dorsulum coarsely punctured ; middle segment more coarsely striated
than in the 9 , particularly the sides ; fore femora not at all produced at base
beneath ; first and second joints of middle tarsi slightly curved, produced at
apex, the first somewhat longer than the following two combined ; abdomen dis¬
tinctly punctured, the first dorsal segment strongly so, the second ventral finely
and closely ; colored like the 9 , except that no spot is present on epimerum
mesopleuralis and first abdominal segment, and the baud on second segment is
sometimes narrower and irregular. Length 11-12 mm.
Lower California ; Arizona ; Colorado. Easily distinguished by
the position of ocelli, sculpture and coloration.
27. Crabro cbrysargimis St. F. and Br.
Crabro chrysarginus Lepeletier de St. Fargeau et Brulle, Ann Soc. Ent. Fr.,
iii, p. 711, 9 •
Crabro arcuatus Say, Bost. Journ. Nat. Hist., i, p. 37 1 .
Crabro chrysargurus Dahlbohm. Hym. Eur., i, p. 386.
Crabro Packardii Cresson (in pt.), 1. c., p. 477.
Crabro honestus Cresson, ibid. p. 485, % .
Crabro chrysarginus Packard, 1. c., p. 82, 9 •
Crabro villosifrons Packard, ibid. p. 83, 9 •
£ . _ Head very finely and closely punctured : frontal impressed line faint ;
space between hind ocelli somewhat less than that between them and the nearest
eye-margin ; first joint of flagellum fully as long as the two following joints
united ; space between the eyes at the base of clypeus not greater than the width
of the latter in the middle; lateral tooth of pronotum rather small; dorsulum
compactly punctured, a little more coarsely so than the head, the scutellum some¬
what more sparsely; mesopleune tolerably coarsely striato-punetate, the punctures
more distinct in some specimens than in others, the episternal suture rather
strongly foveolate; middle segment finely striated, delicately so on the sides; ab¬
domen dor sally very finely and closely punctured, including the first dorsal seg¬
ment, the second ventral with larger, scattered punctures. Black ; mandibles
except apex and outer margin, scape, two spots on pronotum. tubercles, episternum
mesopleuralis more or less, scutellum in part or not at all, a spot at each side of
it anteriorly, metanotum, femora apically to a greater or less extent, tibiae entirely
or with a dark spot within, tarsi except apical joints, a spot at each side of the
first dorsal segment broadest internally, spot at each side of segments 2 and 3,
that on the latter segment narrowest, and a band on segments 4 and 5, that on
the fourth sometimes broken medially, yellow; silvery pubescence of clypeus
sometimes pertaining to golden on medial portion ; wings dark subhyaline, ner-
vures and stigma testaceous. Length 11-14 mm.
\ .—Head more distinctly punctured than in the 9 5 ocelli forming a low
triangle, the space between the hind pair less than that between them and the
June, 1895.
TRANS. AM. ENT. SOC. XXII.
156
WILLIAM J. FOX.
nearest eye-margin ; first joint of flagellum about as long as the two following
joints united, the four basal joints combined nearly twice as long as the six apical
joints united ; lateral tooth of pronotum stronger than in the female; dorsulum
more strongly punctured; middle segment coarsely striated, distinctly so on the
sides; fore femora somewhat produced at base beneath; first and second joints
of medial tarsi slightly curved and produced at apex-, the first joint a little longer
than the following two united ; punctures of the abdomen distinct, particularly
those on the first dorsal segment, the second ventral sparsely punctured ; marked
similarly to the 9 , except that the scutellum is black and the abdominal mark¬
ings are narrower ; scape sometimes with a black spot; pubescence of front and
clypeus silvery; wings paler than in the 9 ■ Length 8-12 mm.
Occurs from Canada to Florida and through the Western States
to Washington, except those in the southwest on the Border. Pack¬
ard, in his description of the female, states, “ second and third joints
next to terminal one of flagellum being dentate.” This statement
is erroneous, as I have examined some of his examples. The fact
of the sex being female would discredit his assertion. That author
also, on page 84 of his work, in speaking of arcuatus, remarks that
“Say, in his description, does not mention the sex of the specimens
before him, but they must have been 9 •” This cannot be, inasmuch
as we find the following in Say’s description, “ sixth joint [of an-
tennse] arcuated, a little prominent inwardly at tip;” this is dis¬
tinctly a male characteristic. The males described by Cresson as
those of Packardii are identical with this species. C. honestus Cres¬
son, differs only in lacking the thoracic markings.
8. Group mififemur.
This group is characterized chiefly by the broad, triangular, non-
excavated pygidium of the 9 , and by the fore tarsi of the l being-
flattened and rather broadly dilated. The thorax is coarsely sculp¬
tured in both sexes and the abdomen distinctly punctured. In the
% the fourth joint of the flagellum curved and has the appearance
of being strongly emarginate beneath, this joint is also somewhat
produced at apex beneath and the first, second and third joints are
more or less contracted basally beneath.
28. Crahro dilectus Cress.
Crabro dilectus Cresson, Proc. Ent. Soc. Phila., iv, p. 478. 9 ^ •
9 . — Head, a little more finely and closely punctured than in bigeminus, the
space between bind ocelli about equal to that between them and the nearest eye-
margin ; dorsulum rather finely and closely punctured, closer than in bigeminus;
mesopleune coarsely striato-punctate ; middle segment rather finely striated above
and behind, the sides veiy delicately striated ; abdomen finely and tolerably
closely punctured, the first segment most distinctly so; pygidium slightly de-
NORTH AMERICAN HYMENOPTERA.
157
pressed on apical portion. Black ; maculated as in bigeminus, but with whitish
and each tibia has a dark spot within, the femora are black except their apices,
and there are no spots on middle segment ; wings subhyaline throughout. Length
11-13 mm.
'k . — Differs from the ^ of bigeminus only in its finer sculpture, particularly of
the abdomen, by the pale ornation, the presence of a dark spot on tibiae within
and by dorsal abdominal segments 2-5 having a broad band. Length 7-12 mm.
Colorado; South Dakota (Aldrich) ; Montana; Washington.
29. Crabro bigeminus Patt.
Crabro bigeminus Patton, Can. Ent., xi, p. 213. % 9 •
9 . — Head rather finely punctured, smaller than rufifemur , frontal impressed
line tolerably distinct; ocelli as usual, the space between the hind pair somewhat
less than that between them and the nearest eye-margin ; pronotum strongly
margined anteriorly, subdentate laterally ; dorsulum with rather close, strong
punctures, much less coarse than in rufifemur, and are most compact ante¬
riorly ; scutellum punctured about like the posterior portion of dorsulum ;
mesopleune tolerably coarsely striato-punctate, but less so than in rufifemur;
mesopleurse with the medial furrow narrow, not deep, tolerably coarsely striato-
punctate, the striae usually distinct above, and particularly on posterior face,
where they are transverse, lateral ridges wanting, sides delicately striated ;
abdomen distinctly punctured, particularly the first dorsal segment, the second
ventral very sparsely punctured ; pygidium somewhat longer than in villosus and
rufifemur , slightly depressed on apical portion. Black: mandibles except apex,
scape, two large spots on pronotum, tubercles, episternum mesopleuralis more or
less, two small spots just anterior to the scutellum, which is rarely colored, meta-
notum, a large spot on the posterior face of middle segment laterally, extending
on the sides somewhat, femora above and beneath on apical portion, tibia}, tarsi,
except one or two apical joints, spots one at each side of abdominal segments 1-3,
those on segment 1 shortest, on segment 3 longest and narrowest and pointed
within, whereas those on the first two segments are obtuse, and a band on segments
4 and 5, yellow; femora, in part, rufous and black; silvery pubescence on rneso-
sternum rather prominent ; wings subhyaline, slightly darker apically, nervures
and stigma testaceous. Length 12-14 mm.
% . — Space between hind ocelli distinctly less than that between them and
nearest eye-margin ; punctures of head stronger and not as close as in the 9 ;
pronotum strongly dentate laterally ; dorsulum with rather coarse, separated
punctures; mesopleurse coarsely striato-punctate ; sides of middle segment strongly
striated ; first joint of medial tarsi shorter than the following two united, not
produced at apex, the outer margin strongly angular, the second joint a little
produced at apex and slightly curved ; abdomen strongly punctured, particularly
the first and second dorsal segments, the remaining dorsal segments more finely
and closely punctured ; colored like the female, but the femora less black, and the
abdominal markings narrower. Length 12 mm.
Massachusetts ; Connecticut (Patton) ; New Jersey ; Delaware ;
Georgia. Distinguished from rufifemur by the less coarse sculpture
and form of first medial tarsal joint; from dilectus it differs by the
darker markings, greater extent of yellow and rufous on the femora,
coarser sculpture of abdomen, etc.
TRANS. AM. ENT. SOC. XXII.
JUNE. 1895.
158
WILLIAM J. FOX.
30. Crabro rullfcimir Pack.
Crabro rufifemur Packard, 1. c., p. 81, % 9 •
9 . — Head large, Dot lower than usual when seen from the front, strongly pro¬
duced behind the eyes, with tolerably close and coarse punctures, closest and
finest in front : impressed line extending from fore ocellus to the frontal depres¬
sion tolerably distinct; ocelli as usual, the space, between hind pair less than that
between them and the nearest eye-margin-; pronotum strongly margined ante¬
riorly, subangular laterally ; dorsulum with coarse punctures, closest anteriorly ;
scutellum more sparsely and less coarsely punctured ; mesopleurse coarsely striato-
punctate throughout ; middle segment with the medial furrow narrow, not deep,
closely punctato-striate, above the striae rather indistinct, on posterior face stronger
and transverse, lateral ridges not developed, sides almost smooth, though evi¬
dently delicately striated, the upper ridge not very strong ; abdomen distinctly
punctured, the first dorsal segment rather coarsely so, second ventral with large
separated punctures. Black; mandibles except apex, scape, two large spots on
pronotum, tegulae, scutellum more or less, and a small lateral spot just anterior
to it, metanotum more or less, femora above in part, tibise, tarsi (the apical joints
darker), spot on each side of abdominal segments 1-3, those on segments 1 and 2
shortest, broadest and more or less obtuse within, those on the third segment long,
narrow, pointed internally, and a band on segments 4 and 5, yellow ; the femora
are in part also rufous and sometimes are entirely of that color and yellow ; tro¬
chanters sometimes rufous or yellowish ; head and thorax scarcely pubescent ;
wings paler than in rillosus, nervures and stigma testaceous. Length 10-13 mm.
. — Very much like the 9 . but more coarsely sculptured, particularly the
abdomen ; first joint of medial tarsi as long, or longer than the following two
united, slightly produced at apex, not at all angular; second joint more strongly
produced at apex, somewhat curved ; colored as in the other sex, but no spots on
scutellum, and the abdominal marks narrower. Length 8-11 mm.
Illinois, westward to Montana, south to Nebraska ; eastward to
Massachusetts, south to New Jersey, north to Canada. I have re¬
ceived this apparently common species from most of my correspon¬
dents. Its geographic distribution is no doubt greater than the
material at hand indicates.
31. Crabro villosus n. sp.
9 . — Head low, when seen from the front, strongly transverse, but little
produced behind the eyes, with very close, tolerably coarse punctures, or the sculp¬
ture particularly that of the front may be described as granulated; impressed
line extending from fore ocellus to frontal depression indistinct ; hind ocelli placed
behind an imaginary line drawn across the vertex from the outer orbit of one
eye to the other, the space between them not quite as great as that separating
them from the eye-margin ; pronotum not margined anteriorly, but transversely
furrowed, at the sides rounded ; dorsulum with tolerably coarse punctures, which
are closest anteriorly ; scutellum sparsely punctured ; mesopleurse coarsely striato-
punctate, sparsely so on lower portion of epimerum ; middle segment with the
medial furrow broad and deep, above with rather coarse striations curving some¬
what to the sides, the posterior face roughened and punctured, lateral ridges well
developed, sides less rough than the posterior face, somewhat striated, bounded
above by a strong ridge, which does not reach the posterior face : abdomen not
NORTH AMERICAN HYMEN OPT E R A .
159
distinctly punctured, except the pygidium, which has large, coarse punctures, the
first segment short and more transverse than in the other species of the group.
Black ; mandibles, except apex, clypeus except fore margin, scape, pronotum,
tubercles, scutellum and metanotum more or less, femora at tips and on the fore
and medial pairs beneath in part, tibire except a spot within on anterior aud hind
pair and a spot at apex of latter, tarsi, band on first segment of abdomen, large
maculations on the second, third and fourth segments almost touching internally,
those on second broadest and truncate within, the others more pointed internally,
a hand on fifth segment, and ventral segments 2-5 almost entirely, yellow ; head
and thorax clothed with rather dense, shaggy, pale fuscous hair ; wings subhy¬
aline, darker apically, the marginal cell not much broader medially than at apex,
and not or scarcely angular beneath, in consequence of which the submarginal
cell is not narrowed at apex as in the allied species. Length 11 mm.
California. A very distinct species.
9. Group dngularis.
The three species constituting this group are easily distinguished
by the peculiar striation of the dorsulum — anteriorly it runs trans¬
versely, posteriorly is longitudial. The pygidium in 9 is strongly
depressed or excavated on apical portion, and is greatly narrowed at
that point, and the pygidial segment basally is furnished on each
side with long, stiff, hairs. In the S the first joint of flagellum is
much slenderer than the remaining joints, the point of junction with
the second joint being consequently well defined, the latter joint is
also somewhat irregular ; fore femora beneath armed with a strong
spine, which projects backward ; fore tarsi flattened, but scarcely
broadened.
32. Crabro singiilaris Sm.
Crabro singularis Smith, Cat. Hym. Brit. Mus., iv, p. 417, % .
Crabro quadrangularis Packard, 1. c., p. 85, 9 •
Crabro singularis Packard, ibid. ]>. 86, 'J, 9 •
Crabro li-maculatus Packard, ibid. p. 87, % .
9 . — Head large, almost quadrate, finely and closely punctured, very closely so
in front; space between eyes at base of clypeus somewhat greater than the width
of the latter in the middle ; first joint of flagellum distinctly longer than the
two following united ; pronotum strongly furrowed on each side, dentate laterally,
punctate; meso- and metapleurae, coarsely striated, the sides of middle segment
with the striae fewer and coarser; middle segment above with the enclosure usu¬
ally well marked, with coarse, longitudinal striae, the central furrow foveolate,
posterior face with irregular rugae, the lateral ridges not at all developed. Black,
mandibles except apex, scape entirely or in part, two spots on pronotum, tuber¬
cles, scutellum more or less, sometimes not at all spotted, sometimes the tips of
fore and medial femora, tibia; except within, first joint of tarsi, a long narrow
spot, pointed internally, on each side of abdominal segments 2-5, and sometimes
a small spot on each side of segments 1 and 6, yellow ; no silvery pubescence on
june, 1895.
TEANS. AM. ENT. SOC. XXXI.
160
WILLIAM J. FOX.
cheeks; wings pale fusco-hyaline, paler basally, a dark cloud at apex of marginal
cell. Length 13-16 mm.
^ . — Head greatly narrowed posteriorly, deeply excavated in front, finely punc¬
tured above, not or indistinctly striated ; pronotum narrower than the occipital
margin of the head, broadly but not deeply furrowed on each side, strongly den¬
tate laterally : middle segment more coarsely sculptured than in the 9 , coarsely
and irregularly rugose above ; fore femora with a long, spine beneath, which
points backward, the fore tarsi flattened but not broadened ; no yellow on scutel-
lum; fore femora and tibiae entirely, medial femora above, base of middle tibiae
on outer side, hind tibiae except apex, yellow ; abdomen spotted as in the 9 > but
an additional spot sometimes on the seventh segment laterally ; cheeks beneath,
fore femora and mesosternum with long, rather dense, white hair; form slender.
Length 9-14 mm.
Canada; Maine; New Hampshire; Massachusetts; Connecticut;
New Jersey; Pennsylvania; Louisiana; Illinois. C. quadrangu-
laris seems to differ only in its larger size, and C. 14-maculatus in
having two additional spots on abdomen. As the size and number of
spots are variable I place these two species as synonyms of singularis.
33. Crabro trapezoideus Pack.
Crabro trapesoideus Packard, 1. c., p. 89, % .
% . — Head above rather coarsely striato-punctate, not as long or narrowed as
much posteriorly as in the ^ of singularis; pronotum strongly furrowed on each
side, as broad as the occipital margin of the head, the lateral tooth not well de¬
veloped ; striae of mesopleurae and sides of middle segment closer and somewhat
coarser than in the species mentioned above, the middle segment above and behind
coarsely rugose ; fore legs as in singularis. Black : mandibles, except tips, scape
entirely, pedicellum in part, pronotum almost entirely, tubercles, scutellum ante¬
riorly, fore legs entirely, medial legs (except the coxae, trochanters, base of femora
beneath and apical joints of tarsi), hind femora above, tibiae except apex, and
first joint of tarsi, and a spot on each side of abdominal segments 2-6, yellow;
dense, white hair on the cheeks beneath, mesosternum and fore femora ; wings
subhyaline, but little darker apically, darkest in marginal cell and beyond.
Length 11 mm.
Illinois. Resembles closely the % of singularis, but is distinguished
by the coarse striation of head above, form of pronotum and spotted
scutellum. Appears to be rare, as I have only seen the unique type.
34. Crabro aciculatus Prov.
Crabro aciculatus Provancher, Hym. Quebec, p. 664, 9 •
9 . — Head shorter and more transverse than in 9 singularis, finely and more
closely punctured ; space between eyes at base of clypeus somewhat less than the
width of the latter in the middle; first joint of flagellum distinctly shorter than
the two following united, but little longer than the second joint; pronotum not
strongly furrowed, not dentate laterally, transversely striated ; meso- and meta-
pleurae coarsely striated, the sides of the middle segment, however, smooth, or
else indistinctly striated, above with longitudinal striae, between which are punc¬
tures, posterior face transversely striated, particularly on apical portion, the lateral
NORTH AMERICAN HYMENOPTERA.
161
ridges distinct, though not strong. Black, including the scutellum ; mandibles
except tips, scape entirely, two spots on pronotum, tubercles in part, extreme tip
of fore femora, and medial tibiae except within, hind tibiae entirely, first joint of
tarsi, large spot on each side of abdominal segment 2, broadest internally, nar¬
rower spot on segments 3 and 4 pointed within and a broad band on segment 5,
yellow; silvery pubescence in the usual situations including the cheeks; wings
subhyaline throughout, with exception of a slightly darker spot at tip of marginal
cell. Length 13 mm.
Canada ; Illinois. A less robust species than singularis, with
smaller head, striated pronotum and short first joint of flagellum.
This species seems to be closely allied to, if not identical with C.
frigidus Smith. I have not seen the £ , which Provancher describes
as follows : “ Scape black, with a yellow line anteriorly ; thorax not
at all maculated, except a large yellow spot on tubercles. Abdomen
elongate, with a broad yellow band at the base of fifth segment, the
sixth entirely yellow.”
10. Group largior.
Pygidium ( 9 ) broad, flat, not excavated ; first joint of hind tarsi
distinctly longer than the longer spur of bind tibiae ; £ flagellum
distinctly dilated or expanded; fore tibiae of same sex bearing a
large vari-shaped shield, the fifth joint of fore tarsi bearing a peculiar
appendage.
35. Crabro largior n. sp.
9 .—Head finely punctured, very closely so in front ; space between hind ocelli
a little less than that between them and the nearest eye-margin ; anterior margin
of clypeus not dentate ; pronotum not margined anteriorly, armed with a small,
blunt, tooth laterally ; dorsulum with tolerably coarse, more or less separated,
punctures ; mesopleurje punctured similarly to the dorsulum, but more sparsely
above with indistinct striations; middle segment above striated about as in mon-
t.icola. but less coarsely, and tends to rugose, basally however, are some heavily
marked ridges or strife, which become gradually obsolete, the posterior face striato-
punctate, its lateral ridges poorly developed extending only about half way to
upper surface, sides more or less striated. Black ; mandibles and clypeus more
or less, sometimes entirely black, scape entirely or with a spot posteriorly, two
large spots on pronotum, tubercles, scutellum more or less, tips of the femora,
tibiae except a spot within, tarsi (the apical joints darker however), a sinuous
spot on each side of the first dorsal abdominal segment, broader spot at each side
of second and third, a broad band on fourth and fifth and irregular lateral spot
ou second, third and sometimes the fourth ventral segments, yellow; head and
thorax with tolerably long, shaggy and dense, pale fuscous pubescence not short
or stiff on dorsulum ; wings subhyaline, with a yellowish tinge, darker apically,
with a fuscous cloud at apex of marginal cell. Length 13-15 mm.
. — This sex resembles that of pleuralis, but differs as follows : space between
hind ocelli but little less than that between them and nearest eye-margin ; four
TRANS. AM. ENT. SOC. XXII.
(21)
JUNE, 1895.
162
WILLIAM J. FOX.
apical joints of flagellum scarcely longer than the four preceding joints united,
the two penultimate joints not longer than hroad ; pronotum with a poorly de¬
veloped ridge anteriorly, the lateral tooth smaller; epimerum mesopleuralis with
large, sparse, punctures, only striated above; middle segment less coarsely sculp¬
tured: first joint of medial tarsi longer by about one-fifth than the remaining
joints united ; anterior femora at base of outer margin with a short, sharp pro¬
duction ; tibial shield smaller than in pleuraMs, and scarcely as acute at apex, in
color, the greater part black, basallv greenish, with broken streaks of yellow, first
joint of fore tarsi longer than the remaining joints united ; anterior trochanters
and femora in part, tubercles and scutellum sometimes black ; a lateral yellow
spot sometimes on fourth ventral segment: mesosternum with long, sparse, pale
pubescence; first joint of fore tarsi black ; wings subhyaline, tinged with yellow.
Length 11-13 mm.
Nevada ; Colorado ; Texas ; Montana. The markings of the ab¬
domen are much heavier than in the two following species.
3(5. C'rabro plcinalis n. sp.
9 . — Head finely and indistinctly striato-punctate above, in front distinctly
striated ; space between hind ocelli less than that between them and the nearest
eye-margin ; anterior margin of clypeus with a large blunt tooth on each side ;
pronotum not margined anteriorly, the lateral tooth small, but sharp and distinct ;
dorsulum with exceedingly compact punctures, rather granulated than punctured ;
mesopleurse striated, most distinctly above, the stria* interspersed with punctures
on lower portion; middle segment with tolerably fine, even, longitudinal stria-
tions, the medial furrow rather narrow, posterior face transversely striated, lateral
ridges tolerably well developed, sides striated, the strength of the striae variable.
Black, including tubercles; mandibles except apical third, clypeus more or less
(sometimes almost entirely black), scape except spot posteriorly, two spots on
pronotum almost touching medially, scutellum anteriorly, femora narrowly at
tips, tibia; except spot within, tarsi entirely, the apical joints, however, darker,
two sinuated spots on first abdominal segment, touching internally, an elongate
spot on each side of segments 2 and 3, obtuse internally, a band on segments 4
and 5, an irregular spot on each side of ventrals 2 aud 3, yellow ; head with the
pubescence about as in monticola, that on the dorsulum short and stiff’; wings sub¬
hyaline, slightly darker apically, nervures and stigma paler than in the species
mentioned. Length 12-13 mm.
^ . — Head coarsely striato-punctate, above ; cheeks strongly depressed and
ridged beneath near the eye-margin ; space between hind ocelli much less than
between them and the nearest eye-margin ; flagellum broadest at the fourth
joint, narrowed from that point to the apex, the first joint with a bunch of pale
hair beneath, four apical joints distinctly longer than the four preceding joints
united, the two penultimate joints longer than broad; pronotum not margined
anteriorly, but very strongly dentate laterally ; dorsulum coarsely and compactly
punctured, the mesopleurse coarsely striato-punctate, their episternal furrow rather
strongly foveolate; middle segment above more coarsely and irregularly striated
than in the 9 > the sides and posterior face much more so than in that sex, lateral
ridges of posterior face well developed; first joint of medial tarsi but little if
anything longer than the remaining joints united ; anterior femora at the base
of outer margin with a large, somewhat bifurcated, production ; tibial shield large,
shaped about as in pallidus, in color : basally yellow, posteriorly greenish, streaked
NORTH AMERICAN HYMENOPTERA.
163
and dotted with yellow; first joint of fore tarsi about as long as the remaining
joints united ; anterior trochanters beneath and femora entirely yellow ; colored
otherwise as in 9 > the apical tarsal joints, however, testaceous, markings of ab¬
domen narrower, a band on sixth dorsal and lateral spot on third ventral ; wings
somewhat darker than in 9 > the cloud at apex of marginal cell darker ; meso-
sternum with long, sparse, pale fuscous hair. Length 14 mm.
Vancouver ; Washington : Seattle (O. B. Johnson) ; Colorado.
The female may be distinguished from that of monticola and largior
by its sculpture, particularly that of the head and mesopleurse ; the
S by the greater combined length of the four apical joints of flagel¬
lum, the lesser space between hind ocelli and paler markings of tibia!
shield.
4
37. Crabro montieoliis Pack.
Thyreopus monticola Packard, 1. c., p. 367, 9 •
Crabro monticola Kohl, 1. c., p. 585.
9 . — Head finely and closely punctured more coarsely so auteriorly ; space
between hind ocelli a little less than that between them and nearest eye-margin ;
pronotum very slightly margined anteriorly, the lateral tooth not strong ; dor-
sulum with rather strong punctures, well separated posteriorly, anteriorly close ;
epimerum mesopleuralis more sparsely punctured, t lie episternal suture strongly
foveolate: middle segment above with longitudinal, more or less irregular, ridges
or coarse strife, which swerve somewhat towards the sides, the medial furrow
broad, posterior face transversely rugose on apical portion, the lateral ridges but
tolerably developed, the sides indistinctly striated. Black, including clypeus ; a
minute dot on mandibles near base, scape except spot posteriorly, two spots on
pronotum, tubercles, scutellum anteriorly more or less, tibife except spot within
and hind pair at apex, first joint of tarsi, a sinuous spot on each side of the first
abdominal segment, wedge-shaped spot, pointed internally on each side of second,
narrower spots or lines on third and fourth also pointed within, a band on seg¬
ment five emarginate on each side anteriorly, and irregular spots on second ven¬
tral segment yellow ; head and thorax with a tolerably thick and long, pale fus¬
cous pubescence : wings fusco-hyaline, paler basally, nervures and stigma dark
testaceous. Length 13-14 mm.
New Hampshire (Packard); Canada (Provancher) ; Virginia;
Georgia.
38. Crabro pallidas n. sp.
9 . — Head finely and closely punctured, in front more strongly and in addition
indistinctly striated ; space between hind ocelli about equal to or slightly less than
that between them and nearest eye-margin ; space between eyes at base of clypeus
greater than the width of the clypeus in the middle, the anterior margin of the
latter subtruncate, slightly produced medially, the lateral angles sharp but scarcely
dentate; pronotum not ridged anteriorly, obtusely dentate at the sides; dorsulum
with strong, scattered punctures, those on mesopleurse finer and sparser, episternal
suture with the fovese not strongly marked, though present; middle segment
above with a somewhat triangular depression, less marked in some specimens
than in others, covered with strong strise curving toward the sides, posterior face
TRANS. AM. ENT. SOC. XXII.
JUNE, 1895.
164
WILLIAM J. FOX.
less strongly and transversely striated, the strength of the lateral ridges gradually
diminishing toward the upper surface, sides somewhat coriaceous. Black ; man¬
dibles and clypeus except their apices, scape, pedicellum in part, pronotum, tuber¬
cles, scutellum, metanotum. tips of femora, tibhe, except a spot within, first joint
of tarsi, hand on first abdominal segment, large spots on second and third barely
touching within, band on fourth and fifth and irregular spots on ventrals 2-5,
those on segment 2 largest and sometimes touching, whitish ; wings pale subhya¬
line, dusky at apex, nervures and stigma pale testaceous; pubescence of head
and thorax whitish silvery in the usual situations. Length 8-10 mm.
% . — Head coarsely and closely punctured, the cheeks striated as in argus, but
indistinctly, strongly depressed, though but slightly produced posteriorly, appar¬
ently not ridged beneath ; anterior margin of clypeus strongly dentate laterally,
emarginate medially or incurved ; flagellum broadest at about the fourth joint,
narrowed from that point to the apex, first joint broadened to meet the second,
with a prominent hunch of pale hairs beneath, four apical joints about as long as
the four preceding ones united ; thorax more coarsely sculptured than in the 2 •
the pronotal teeth stronger ; first joint of medial tarsi scarcely longer than the
remaining joints united ; fore femora in shape triangular, about two-thirds as
broad at base as they are long ; tibial shield shaped as in argus, but large]', and
the outer edge more strongly sinuated, in color outer half greenish white, streaked
and dotted blackish, remainder dark brown ; colored like the 2 > with the fore
femora, all the cox® and trochanters more or less, and medial legs entirely whitish ;
mesosternum with dense, white pubescence. Length 9-10 mm.
Montana.
39. Crabro aequalis n. sp.
2 . — Head finely and closely punctured, in front with a delicate striation ; space
between hind ocelli about equal to or slightly greater than the space between
them and the nearest eye-margin ; space between eyes at base of clypeus less than
the width of the latter in the middle, much narrower than in argus; anterior
margin of clypeus slightly sinuous, lateral angles not dentate; first joint of fla¬
gellum about as long as the two following united ; pronotum not strongly ridged
anteriorly, but strongly dentate at the sides; dorsulum with fine, even, tolerably
close punctures, those on mesopleur® still finer and more scattered, the episternal
suture very strongly foveolate; middle segment very coarsely rugose, the median
channel broadened decidedly toward base, on upper surface the rugae form ir¬
regular foveae, posteriorly transverse, the lateral ridges well developed and reach¬
ing the upper surface, sides smooth, at least medially ; pygidium coarsely punc¬
tured as in most species of this section. Black; mandibles and clypeus except
their apices, scape, pronotum, tubercles, scutellum and metanotum more or less,
tips of the femora, particularly the fore and medial pair, tibiae except a spot
within and apex of hind pair, tarsi more or less, a band on first abdominal seg¬
ment, a large spot at each side of second pointed within, narrower spots on third
and fourth, those on latter almost touching within, smaller spots on fifth, and a
spot on each side of ventrals 2 and 3, yellow ; silvery pubescence in the usual
situations, particularly obvious on mesosternum ; wings fusco-hyaline, paler at
base, nervures and stigma dark testaceous. Length 8 mm.
Georgia. Resembles C. cingulatus superficially, but the strongly
dentate pronotum, punctured pygidium, greater length of first joint
NORTH AMERICAN HYMENOPTERA.
165
of flagellum, etc., will serve in distinguishing it. The discovery of
the S may relegate it to the preceding group.
40. Crabro discrrtus n. sp.
9 . — Head finely and closely punctured, more transverse than in sequalis, front
with the punctures stronger and closer; space between eyes at base of clypeus
but slightly, if anything, less than the width of the latter in the middle ; anterior
margin of clypeus broadly truncate, not or scarcely dentate laterally ; first joint
of flagellum about as long as the two following united ; pronotum anteriorly
ridged at the sides only, rather strongly dentate at sides ; dorsulum subopaque,
with tolerably strong punctures, close anteriorly and evenly separated on posterior
portion, those on mesopleurte larger and sparse, episternal suture strongly foveo-
late; middle segment about as in sequalis, but a little less strongly rugose, and the
fovese formed by the rugae smaller, fo ve;e margining the posterior face outwardly
much smaller, and the sides more distinctly striated ; pygidium coarsely punc¬
tured, longer and less triangular than in the species mentioned above. Black ; no
yellow on tegulse or metanotum ; small spot on mandibles basally, clypeus except
fore margin, scape entirely, pronotum, tubercles, scutellum more or less, extreme
tips of four anterior femora, tibiae except a spot within, tarsi (apical joints darker),
narrow sinuated spot on each side of first abdominal segment, broader spots,
pointed within, on second longer, narrow spots on third, and a band on fourth
and fifth, yellowish ; veutrals not yellow, but their apical margins testaceous ;
wings fusco-hyaline, nervures and stigma dark testaceous. Length 9 mm.
District of Columbia (in coll. Ash mead).
41. Crabro a rgus Packard.
Crabro argus Harris (no descr.), Catal. Ins. Mass., p. 68 (teste Packard).
T hyrecpus argus Packard, 1. c., p. 359, 'J, .
Crabro argus Kohl, 1. c., p. 584.
9 . — Clypeus broadly truncate anteriorly, strongly dentate at each side, shaped
as in C. cingulatus ; head finely and closely punctured, most strongly so anteriorly ;
space between hind ocelli rather distinctly less than that between them and
nearest eye-margin ; first joint of flagellum shorter than the second ; pronotum
anteriorly ridged at extreme sides only, the lateral tooth strong; dorsulum punc¬
tured like the vertex, but more strongly; epimerum mesopleuralis with tolerably
fine, well separated though not sparse punctures, the episternal suture very
strongly foveolate ; middle segment above with coarse ridges, which form very
large fovese, on posterior face the mesial furrow is restricted to a medial, pyriform
pit, which is surrounded by a series of large fovea;, exterior to these fovese on
each side is a deep furrow, margined within and without by a ridge, sides of
middle segment not striated ; pygidial area longitudinally rugose. Black ; man¬
dibles except apex, scape, clypeus more or less, two strongly sinuated spots on
pronotum, tubercles, tips of fore and medial femora, tibia; except a spot within,
first joint of tarsi except apex, two rather broad, slightly sinuated spots on first
abdominal segment, almost touching within, large spot at each side of second
pointed within, longer and somewhat narrower spots on third, long spots on
fourth almost touching within and a band emarginate on each side on fifth, yellow ;
scutellum black ; wings subhyaline, with a slight yellowish cast, darker apically,
nervures and stigma testaceous. Length 9 mm.
TRANS. AM. ENT. SOC. XXII.
JUNE. 1895.
WILLIAM J. FOX.
166
% .—Cheeks striated from the eyes backward instead of from top to bottom as
is usually the case, strongly depressed below and produced posteriorly into a
strong tooth or prominence; anterior margin of clypeus somewhat rounded out,
not dentate laterally, iu the middle slightly emarginate ; scape short, hardly one-
quarter times longer than the space between the eyes at the base of clypeus ; first
joint of flagellum small, not dilated or produced, in length about as long as the
pedicel lum, joints 2-6 with a large appendage on outer edge, that on joints 2 4
somewhat curved, and pointed at apex, that on second joint narrowest and most
curved, that on sixth broadest and not at all curved, four apical joints shorter
than the three preceding ones united ; thorax somewhat more coarsely sculptured
than in the female, the epimerum mesopleuralis, however, smooth, impunctate.
separated from mesosternum by a distinct furrow, which is strongest anteriorly ;
medial furrow of posterior face of middle segment larger than in 9 1 first joint
of medial tarsi fully twice as long as the remaining joints united; base of fore
femora outwardly terminating in a long, slender production ; tibial shield long,
pointed apically, the outer margin once sinuated, the opposite margin revolute,
in color greenish yellow basally, dotted with paler, otherwise brownish, also dotted
with yellow ; first joint of fore tarsi more than twice as long as the remaining
joints united; colored like the 9- but differing as follows: medial legs entirely,
greater part of fore femora^ yellow; spots on pronotum sometimes wanting;
mesosternum with a dense white pubescence, hind femora with a black spot ex¬
ternally. Length 9-10 mm.
Canada (Harrington); Maine (Packard); New Hampshire:
Franconia (Mrs. Slosson); Long Island, New York (Ashmead);
Washington. The specimen of latter locality may be labeled erro¬
neously, as I have seen no specimens from intermediate localities.
The 9 , of which I have examined but one specimen collected by
Mrs. Slosson, is difficult to separate from C. cingulatus of the pre¬
ceding group. The absence of maculations on scutellum and meta-
notum, small spots on pronotum, dark spots on the tibia; within,
darker wings and smaller maculations of abdomen will aid in dis¬
tinguishing this species. The S is too distinct to require comment.
42. ('rabro tenuis n. sp.
9 . — Head with fine, tolerably close punctures, though not so close as iu the
preceding species of this section; space between hind ocelli about equal to or
slightly less than that between them and the nearest eye-margin ; clypeus rather
longer than usual, the anterior margin strongly rounded out ; pronotum not ridged
anteriorly, angular at the sides, but not dentate ; dorsulum with fine, rather close,
even punctures, those on the epimerum mesopleuralis stronger and sparse, the
episternal suture distiuctly though not very strongly foveolate ; middle segment
above witli coarse ridges curving toward the sides, the medial furrow unusually
broad and shallow, posterior face rugose at apex only, the lateral ridges well de¬
veloped, sides with a rather fine striation. Black ; basal half of mandibles, cly¬
peus more or less, scape anteriorly, two spots on pronotum, tubercles, scutellum
more or less, fore and medial tibiae except a spot within, basal portion of hind
pair, first joint of tarsi, sinuated spot on each side of first abdominal segment,
broad spot on second narrow, somewhat sinuated spot on each side of third to fifth,
NORTH AMERICAN HYMENOPTERA.
167
those on the latter segment sometimes reduced to dots, yellowish white ; pale hair
on vertex and cheeks rather prominent ; silvery pubescence in usual situations ;
wings subhyaline, but little darker apically, nervures and stigma dark testaceous.
Length 7.5-8 mm.
% . — More coarsely sculptured than in 9 ; head striated in front, above and on
cheeks rather coarsely and closely punctured ; flagellum broadest basally, the
first joint with a bunch of white hairs beneath ; anterior margin of clypeus with
a prominent quadrate production medially ; cheeks strongly depressed below ;
pronotum with a small tooth laterally ; dorsulum closely but less coarsely punc¬
tured than occiput ; mesopleurge with the epimerum above striated similarly to
its episternum: middle segment with sides more coarsely striated, the posterior
face more rugose, the lateral ridges longer, reaching the upper surface, first joint
of medial tarsi scarcely one-third longer than the length of the remaining joints
united ; tibial shield somewhat longer than broad, the lower margin almost
straight, not sinuate or emarginate, posteriorly the shield rounded, in color brown¬
ish in greater part, otherwise greenish, narrowly streaked with yellow, yellow
also at extreme base ; marked very much as in the 9 > except as follows : no yel¬
low on scutellum, and tubercles, fore femora almost entirely, middle femora with
a stripe anteriorly and posteriorly, a line on hind tibiae anteriorly and posteriorly
and a small spot on each side of ventral abdominal segment 2, yellowish. Length
8 mm.
Colorado. The small size, sculpture of 9 > shape of tibial shield
of % , and shape of fore margin of clypeus are the chief points of
difference in this species.
43. Craforo inetlius n. sp.
% . — Head coarsely and closely punctured, distinctly striated anteriorly ; space
between hind ocelli rather distinctly less than that between them and the nearest
eye-margin; flagellum not much broadened, widest medially, first joint without
bunch of hairs beneath ; cheeks coarsely striated, slightly depressed, not keeled
beneath ; pronotum strongly ridged anteriorly, particularly toward the sides, the
lateral tooth strong and sharp; dorsulum and scutellum coarsely and closely
punctured ; epimerum mesopleuralis sparsely punctured, separated from the
mesosternum by a strong furrow, episternal suture strongly foveolate ; middle
segment very coarsely rugose, the ridges on upper surface forming foveee, on pos¬
terior face transverse, and not so strong; lateral ridges exceedingly strong, the
sides with irregular striations; first joint of medial tarsi somewhat less than one-
third longer than the remaining joints united ; form femora at base extended
into an acuminate production, which is nearly as long as that part of the femora
before its junction with the trochanter ; tibial shield rather small, obtuse apically,
outer margin being sinuated or once emarginate, in color the lower portion is deep
black, on remainder yellowish streaked with blackish. Black, including scape
posteriorly, and thorax entirely ; spot on mandibles medially, scape anteriorly,
greater part of fore femora, tips of medial pair and a spot before their apices,
tibiae except a dark spot within and on fore pair without, first joint of tarsi,
sinuated spots on first abdominal segment, large spots on second, slender spots on
segments 3-6, all of which are separated medially, and usually though not always,
a lateral spot on ventrals 2 and 3, yellow ; clypeus either black or more or less
yellow ; pubescence on mesosternum rather long ; wings subfuscous, nervures
dai’k. the stigma -paler, testaceous. Length 7-8.5 mm.
TRANS. AM. ENT. SOC. XXII.
JUNE, 1895.
WILLIAM J. FOX.
168
W ashington ; Nevada. The specimen from the latter locality is
smallest and less coarsely sculptured. A 9 specimen from the first
mentioned locality I refer herewith some doubt; it resembles ad-
venus, but the clypeus is black and dentate laterally ; sculpture of
the dorsulum is coarser, that of the epimerum mesopleuralis sparser,
while that of the upper surface of middle segment tends to a rugged
rather than a ridged nature ; the markings are of a deeper yellow,
those on abdominal segments 2-6 heavier and not at all sinuate or
emarginate ; tips of femora yellowish, as well as mandibles except
tips. Length 10 mm.
44. Crabro Provaneheri n. n.
Thyreopus sinuatus Provancher (nee Fabr.), Hym. Quebec, p. 664, 9 •
9 .—Head finely and closely punctured, not striated on front and vertex, but
more strongly punctured ; space between hind ocelli slightly less than that be¬
tween them and the nearest eye-margin ; anterior margin of clypeus not dentate
laterally ; pronotum well ridged anteriorly, the lateral tooth strong and sharp ;
dorsulum with tolerably close and strong punctures; scutellum similarly punc¬
tured ; mesopleurse with finer but sparser punctures, the episternal suture strongly
foveolate ; middle segment above with coarse, somewhat radiating ridges, which
terminate outwardly at a strong curved ridge, which bounds the upper surface,
posterior face transversely and less coarsely rugose, the lateral ridges well devel¬
oped, sides except medially, striated. Black, including the scape except extreme
apex ; spots on mandibles medially, clypeus, pronotum almost entirely, tubercles,
scutellum anteriorly, tips of femora and a spot beneath near the apex of fore and
medial pair, tibia- except darker spot within, first joint of tarsi, and spots on the
abdomen as in cribrellifer, yellow; wings subhyaline, darker at apex, nervures
and stigma dark testaceous. Length 12 mm.
Toronto, Canada (Provancher) ; Jacksonville, Florida (Ashmead).
A Crabro sinuatus has been described from Europe, thus making it
necessary to change Provancher’s name. This species will probably
prove to be the 9 of cribrellifer.
45. Crabro cribrellifer Pack.
Thyreopus cribrellifer Packard, 1. c., p. 358, 'J, .
Crabro cribellifer (sic) Kohl, 1. c., p. 585.
% . — Head closely punctured, anteriorly most coarsely being striato-punctate ;
space between hind ocelli a little less than that between them and the nearest
eye-margin ; flagellum broadest basally, not so broad as in latipes, the basal joint
with a bunch of white hairs beneath ; cheeks depressed, not produced posteriorly,
scarcely ridged beneath; pronotum strongly ridged anteriorly, the lateral tooth
well developed, acute ; dorsulum with distinct, tolerably well separated punctures,
closer and finer, however, than in latipes : epimerum mesopleuralis very sparsely
punctured, almost smooth, the episternal suture as well as that which separates
the epimerum from the mesosternum heavily defined and strongly foveolate :
middle segment above very coarsely rugose, the rugae forming irregular foveas. on
posterior face transverse, the lateral ridges very strong and extending to the upper
NORTH AMERICAN HYMENOPTERA.
169
surface, sides coarsely striated ; fore femora remarkably shaped, being fully three
times broader than long, flattened ; tibial shield large leaf-like, decidedly longer
than broad, obtusely pointed apically, the outer margin bilobate, or in other words
strongly emarginate medially, in color brownish, closely dotted with pale basally,
sparsely so on remaining portion ; first joint of fore tarsi scarcely longer than the
remaining joints. Black, including the scape, except extreme apex, and scutel-
lum and postscutellum ; spot on mandibles medially, clypeus more or less, two
sinuous spots on pronotum, tubercles, fore femora, medial femora apically, tibhe
except a spot within, basal joint of tarsi, two sinuous spots on abdominal segment
1, two broader spots on segment 2, long narrow spots on 3, and a band on seg¬
ments 4 6, emarginate anteriorly and sometimes separated medially, yellow ; sil¬
very pubescence in the usual situations; wings subhyaline, slightly darker
apically. Length 10 11 mm.
Canada (Harrington); Maine and Massachusetts (Packard);
Long Island, New York (Ashmead) ; Illinois. Having one of
Packard’s types before me I must take exception to his description
of the fore femora, he says, “(fore) femora twice as long as broad
....,” while in the specimen before me the femora are as described
above.
46. Crabro lal i pcs Sm.
Crabro gryphus Harris, Cat. Ins. Mass., p. 68 (teste Packard).
Crabro latipes Smith, Cat. Hym. Brit. Mus., iv, p. 396, ^ .
Crabro latipes Cresson, 1. c., p. 477.
Thyreopus latipes Packard, 1. c., p. 355, 'J, .
Thyreopus coloradensis Packard, ibid., p. 356, % .
Crabro latipes Kohl, 1. c., p. 584.
Crabro coloradensis Kohl, ibid., p. 585.
I, . — Head closely punctured, most coarsely so anteriorly, where it has the ap¬
pearance of being striato-punctate ; space between hind ocelli but little less than
that between them and the nearest eye-margin, the space between the eyes beneath
at base of clypeus, fully equal to or slightly greater than the length of the clypeus
in the middle ; flagellum broadest by far towards the base, and narrowed to apex
from second joint, the first joint without a bunch of white hairs beneath ; cheeks
keeled beneath near the eye-margin, depressed, but not produced posteriorly ;
pronotum with a small tooth laterally, but not ridged anteriorly; dorsulum with
rather coarse, well-separated punctures, closest anteriorly ; mesopleurse more finely
punctured, the episternal suture not very strongly foveolated, furrow separating
the epimerum mesopleuralis from mesosternum present, but feebly developed ;
middle segment above and posteriorly rugose, most coarsely above, the basal series
of foveae more prominent than usual, lateral ridges of posterior face strong, ex¬
tending somewhat beyond the middle though not reaching the upper surface •
first joint of medial tarsi nearly twice as long as the remaining joints united ;
tibial shield large, leaf-like, much longer than broad, acuminate apically, its outer
margin trilobate, in color : apically yellow, with three broad, dark streaks, basally
black with several pale, narrow streaks ; first joint of fore tarsi more than twice
longer than the remaining joints united. Black ; mandibles, except apex, clypeus
more or less, scape anteriorly, fore trochanters, femora and tibiae in part, medial
(22)
TRANS. AM. ENT. SOC. XXII.
JUNE, 1895.
170
WILLIAM J. FOX.
trochanters beneath, their femora anteriorly and posteriorly, medial and hind
tibise except internally, first joint of tarsi, a sinuous spot on each side of first
abdominal segment, broader spots on second, long slender marks on segments 3-6,
those on segments 4, or 5 and 6 generally touching within, thus forming a band,
and small lateral spots on second ventral, yellow ; thorax not at all marked with
yellow; mesosternum with a rather long, pale pubescence. Length 8 10 mm.
Nova Scotia (Smith ) ; Canada ( Harrington ) ; Montana ; Colorado ;
Arizona; Oregon; Washington. Notwithstanding the differences
pointed out by Packard between latipes and coloradensis I feel obliged
to unite the two. I have the types of coloradensis before me and
fail to discover the differences indicated by that author. It is true
that the abdomen in his type specimens is longer than in others, but
a large series, twenty-four specimens, shows the intergradational
forms to the specimens with the shorter, more ovate abdomen.
47. Crabro vieimis Cress.
Crabro vicinus Cresson, 1. c... p. 479, 9 •
Crabro succinctus Cresson (in pt.), ibid. p. 479, 9 •
Thyreopus advenus Packard (in pt.), 1. c., p. 368.
Thyreopus succinctus Packard, ibid. p. 369.
Crabro vicinus Cresson, Synopsis, p. 285.
9 . — Head finely and closely punctured ; space between hind ocelli but slightly
less than that between them and the nearest eye-margin ; anterior margin of
clypeus sinuated, but not strongly, not or scarcely dentate laterally ; pronotum
feebly furrowed at the sides, not ridged anteriorly, and not at all dentate laterally ;
dorsulum with rather strong, well-separated punctures, particularly on posterior
portion ; punctures of mesopleu rae not stronger than those of the dorsulum but
much sparser, the episternal suture with tolerably strong fovea. ; middle segment
above with a rather fine striation, curving toward the sides and basally some¬
times with a few short, stronger stria or ridges, posterior face roughened, coria¬
ceous, the lateral ridges becoming obsolete above the middle, sides with a fine,
rather indistinct, striation. Black; mandibles except apex and extreme base,
clypeus more or less, generally entirely except fore margin, scape, sometimes
spotted behind with black, spots on pronotum sometimes almost connected within
and again being absent, tubercles entirely or in part, scntellum more or less (some¬
times black), tips of femora, tibia except a dark spot within, first joint of tarsi,
two sinuous spots on first abdominal segment in some cases connecting internally
and thus forming a band, broader spots on segments 2. 3 and 4, those on the latter
segment generally forming a band, and irregular spots on ventrals 2 and 3, which
may be absent in part or entirely, yellow ; wings with a yellowish tinge, the ner-
vures and stigma of that color ; pubescence of head and thorax pale gray. Length
8 -11 mm.
Colorado ; Nebraska (Barber) ; Nevada ; Arizona ; California ;
Mt. Hood, Oregon ; Washington ; Montana. A specimen labeled
Canada has the markings greenish white. This is a variable species,
but is easily distinguished by the form of pronotum, hue sculpture
of upper surface of middle segment and sculpture of dorsulum. It
will probably be placed as the 9 of latipes eventually.
NORTH AMERICAN IIYMENOPTERA.
171
11. Group tenuiglossus.
The males of this group differ from those of group largior by the
simple, lion-dilated antennae, and by the first joint of fore taisi being
without an appendage ; otherwise they are the same. The females
are indistinguishable from those of the preceding group.
48. Crafor© (onspiciiiis Cress.
Crabro conspicuus Cresson, Proc. Ent. Soc. Pliila., iv, p. 480, 9 •
Thy reopus conspicuus Packard, 1. o., p. 369.
Crabro conspicuus Kohl, 1. c., p. 585.
9 .—Head finely and closely punctured, but less so than advenus ; space between
hind ocelli less than that between them and the nearest eye-margin ; anterior
margin of c.lypeus broadly truncate, armed with a distinct, blunt tooth on each
side; pronotum strongly furrowed on each side, the frontal ridges strong, but
short, the lateral tooth not well developed; dorsulum a little less closely punc¬
tured than in advenus; mesopleurse with large and sparse punctures, stronger
than in the species mentioned above, the epistemal suture less strongly foveolate;
middle segment as in advenus, hut the furrow of upper face not so strong, and the
sides more feebly striated, sometimes smooth and glabrous medially. Black ;
mandibles on basal two-thirds, scape, clypeus, two large spots on pronotum, tuber¬
cles, scutellum (black in one case) tips of femora, fore pair beneath and sometimes
medial pair, tibi. Of the three type specimens of C. succinctus Cresson,
examined, I find two are advenus, and the other identical with C.
vicinus. It would be impossible to straighten out the synonymy of
this species, had I not the opportunity of examining the types of
Cresson. Packard gives no locality for pegasus, but his specimens
were presumably from some of the New England States.
50. Crabro lliyreophorus Kohl.
Crabro ( Thyreopns ) thyreophorus Kolil, 1. c., p. 585, pi. xiv, figs. 27, 29, ^ 9.
9 . — Head with the sculpture subtile; first joint of flagellum distinctly shorter
than the following two united ; space between hind ocelli less than that between
them and the nearest eye-margin ; pronotum not furrowed, the sides anteriorly,
not dentate, rounded laterally ; dorsulum with sparse, shallow punctures, densest
NORTH AMERICAN HYMENOPTERA.
173
anteriorly; scutellum sparsely punctured ; meso pleura: punctured about like the
dorsulum, but more regularly so, the fovese of the episternal suture scarcely evi¬
dent ; sculpture of middle segment indistinct, above appearing longitudinally and
finely striated, the sides and posterior face subtilely sculptured, lateral ridges of
the latter absent ; abdomen broader than in vernalis, not much narrowed to the
first segment. Black, including the mandibles; scape, two spots on pronotum,
tubercles, line on scutellum, apex of all the femora, tibia? entirely, tarsi except
apical joints, a large wedge-shaped spot on segments of abdomen 1-4, a band on
segment 5, and lateral spots on ventrals 2 and 3, bright yellow ; head, thorax and
first segment of abdomen with unusually long, shaggy, yellowish brown hair:
wings fulvo-hyaline. somewhat darker apically, nervures and stigma yellowish ;
no silvery pubescence, instead the long hair. Length 9-10 mm.
'k . — Sculptured like the 9 • but the middle segment is distinctly striated above,
as well as on the sides, and the punctuation of mesopleurse is closer ; space between
the hind ocelli very much less than that between them and the nearest eye-
margin; antenna: longer and slenderer than in vernalis, acuminate at tip; pro¬
notum angular laterally ; marks on scutellum sometimes wanting, those on the
scutellum not present, markings of abdomen smaller than in the 9 , those on
fifth segment generally separated, the sixth segment, however, banded ; wings
paler than in 9 : clypeus black, with the inner orbits clothed with silvery pu¬
bescence ; fore trochanters almost equaling their femora in length, not much
broadened apically ; tibial shield larger and broader than in vernalis ; basally it
is about as broad as long but narrows considerably behind, in color yellow, and
medially with irregular dark streaks, at the base broadly margined with black ;
first joint of medial tarsi distinctly longer than the remaining joints combined.
Length 8 mm.
Nevada. I have seen no specimens measuring less than 8 mm. ;
Kohl gives 7 mm. as the smallest. As in vernalis, the males possess
no furrow between the epimerum mesopleuralis and the mesosternum.
51. Crabro vernalis Pack.
Thyreopus vernalis Packard, 1. c., p. 369, 9 •
Crabro vernalis Kohl, 1. c., p. 585.
9- — Head with the sculpture subtile, indistinct ; first joint of flagellum about
as long as the two following united ; space between the hind ocelli somewhat
greater than that between them and the nearest eye-margin ; lateral impressions
of vertex very shallow ; pronotum but slightly furrowed at the sides anteriorly,
the lateral teeth small and blunt ; dorsulum with sparse, shallow punctures,
densest anteriorly ; scutellum scarcely punctured ; mesopleurse with the punctures
slightly stronger than those of the dorsulum, the episternal suture rather strongly
foveolate; middle segment above longitudinally and rather finely striated, more
distinctly so in some specimens than in others, the posterior face and sides sub¬
tilely roughened, the lateral ridges of posterior face very short ; abdomen fusiform,
the first segment broad at apex, not tumid. Black, including the mandibles and
clypeus; scape at apex, large spots on pronotum, tubercles, scutellum, metanotum,
tips of fore and medial femora, tibiae except a line within and apex of hind pair,
first joint of tarsi, a wedge-shaped spot on dorsal abdominal segments 1-3, nar¬
rower marks on segment 4, and a continuous line on segment 5, whitish ; head
and thorax clothed with thin, long, pale pubescence ; no silvery pubescence on
cheeks or thorax : wings subhyaline. Length 7.5-9 mm.
TRANS. AM. ENT. SOC. XXII.
JUNE. 1895.
174
WILLIAM J. FOX.
£ . — Sculptured like the 9 ■ hut the middle segment on sides striated, and the
episternal suture of mesopleurae less strongly foveolate ; space between hind ocelli
slightly less than that between them and the nearest eye-margin ; the markings
are substantially the same as in the 9 those -on the abdomen, however, touching
within, there are small lateral spots on the second and third ventral segments and
the clypeus has two white spots; fore femora black, except tips and a short line
on outer side at apex ; fore trochanters triangular, in length not more than half
that of their femora ; tibial shield a little longer than broad, its outer and poste¬
rior margins strongly rounded, the anterior margin scarcely rounded, in color
greenish white, streaked with paler throughout ; first joint of medial tarsi about
as long as the remaining joints united. Length 7 mm.
Illinois ; Colorado. Distinguished by the color of its markings,
sculpture, loug pubeseeuee of head and thorax, etc. There is no
suture between the epiiherum mesopleuralis and the mesostemum in
this species.
52. Crabro virgatus n. sp.
^ . — Front and vertex coarsely striated, cheeks and occiput coarsely and closely
punctured ; antenna} long, slender, the flagellum decidedly longer than twice the
length of the scape; space between hind ocelli distinctly less than that between
them and the nearest eye-margin ; pronotum at each side behind the strong lat¬
eral tooth with a strong pit or fovea ; dorsulum coarsely and closely punctured ;
scutellum and mesopleurae coarsely striated, with punctures between the stride ;
middle segment above and on posterior face rugose, at the base with a transverse
row of large fovea1, the channel which divides the upper surface broad, deep and
transversely ridged so as to appear foveolated, sides of middle segment striated,
less strongly so in the middle ; tibial shield broader than long, in shape somewhat
triangular, broadly margined anteriorly with black, otherwise, except a black
spot near apex of tibiae grayish, dotted with yellow marks. Black, including the
mandibles, clypeus and thorax entirely; scape with a narrow yellow stripe: fore
femora beneath, tibiae more or less, the fore tarsi and the first joint of the other
pairs, spot on each side of first abdominal segment emarginate posteriorly near
inner end, a wedge-shaped spot on each side of segment 2, linear markings on
segments 3-5. spots or lines on segment 6 and a small spot at each side of ventral
segment 2, yellow; silvery pubescence scarcely evident on the cheeks, though
present in the other usual situations; wings except base subfuscous, nervures and
stigma black. Length 8 mm.
Nevada. Easily distinguished by the sculpture. I11 the single
specimen before me dorsal abdominal segments 3-5 have basal ly a
chitinous covering, the apical margin of which is deeply bowed.
Whether this is an anomalistic or an ordinary character of the spe¬
cies is difficult to decide without other specimens. I am inclined to
regard it as an anomaly.
53. Crabro incertiis n. sp.
9 . — Head closely punctured ; lateral impressions of vertex broad and not deep ;
space between eyes beneath at base of clypeus less than in tenuiglossus, but greater
than in tumidus, somewhat less than the length of the pedicellum and basal joint
NORTH AMERICAN HYMENOPTERA.
175
of flagellum united ; pronotum strongly furrowed on each side anteriorly, thus
forming an anterior ridge which terminates in a strong tooth ; dorsulum com¬
pactly punctured; mesopleune with large punctures, which are not scattered as
in the two preceding species, although they are not close by any means ; sculpture
of upper surface of middle segment variable, generally with a large fovea medi¬
ally, on each side of which there are smaller fovea, or numerous irregular ridges ;
in one specimen the upper surface is marked by strong radiating ridges, in the
middle with a broad channel, narrowed basally; the remainder of middle seg¬
ment, sides excepted, rather strongly and transversely rugose: first abdominal
segment in form intermediate between tenuiglossus and tumulus. Black ; base of
mandibles, scape, greater part of pedicellum, two large spots on pronotum, tuber¬
cles, line on scutellum, metanotum, tips of femora, tibiae except within, a small
lateral spot on first abdominal segment, much larger and elongate spots on seg¬
ments 2-4, and greater part of fifth segment except base and a small black spot
laterally, yellow ; tarsi yellow testaceous : wings on apical half subfuscons ; silvery
pubescence as usual. Length 8-9 mm.
% . — Very much like the 'J, tumulus ; differs by the strongly and more closely
punctured mesopleurse; flagellum decidedly shorter and stouter ; head and dor¬
sulum more strongly punctured ; and the tibial shield is darker and narrower,
being distinctly longer than broad ; the form is narrower and more lengthened ;
markings about the same, except they are narrower on the abdomen, those on
pronotum and scutellum sometimes wanting, the metanotum always maculate,
however ; first abdominal segment longer than in tumidus 'J, ; femora entirely
black. Length 8-9 mm.
4 Texas ; Arizona. The coarser and closer sculpture of mesopleurse
will aid in distinguishing this from the two preceding species. The
% specimens are placed here with some doubt. The males resemble
those of C. peltista Kohl from Mexico, but the first joint of anterior
and medial tarsi is shaped differently.
54. Crabro I inn i hut the fore and middle femora are yellow beneath, and there is quite
a prominent yellow spot on each side of first abdominal segment; mesosteruum
with tolerably long, dense, white hair beneath. Length 7-8 mm.
Illinois; South Dakota (Aldrich); Ottawa (Harrington). A
much more robust form than C. tumidus, and is distinct in other
prominent characters.
12. Group hilar is.
These species resemble those of the preceding group to some ex¬
tent, but are easily distinguished by the almost simple fore legs and
NORTH AMERICAN IIYMENOPTERA.
177
antennse of the males. Pronotum dentate laterally ; first joint of
hind tarsi sometimes longer than the length of the longer spur of
tibiae, though usually of the same length ; pygidium broad, not de¬
pressed, and with appressed pubescence ; male an ten me not dilated,
fringed more or less beneath with long, thin pubescence, which is
more evident in some species than in others ; £ anterior legs not
deformed, their femora slightly flattened, and in some species clothed
with more or less long, dense, white pubescence beneath, as is also
the mesosternum.
This group may be identical with Anotliyreus Dahlb., but it differs
from it in some of its characters : by the fringed antennse and den¬
tate pronotum.
56. C'rabro cingula I us Pack.
Thyreopm cingulatus Packard, Proc. Ent, Soc. Phila., vi, p. 366, % 9 .
Crabro cingulatus Kohl, Zool. Jahrb. (Abtli. f. Syst. Geogr., etc.), iii, p. 584.
9. — Anterior margin of clypeus broadly truncate, somewhat incurved, the
lateral angles very prominent, almost tooth-like ; head finely and closely punc¬
tured, the front not at all striate; space between the hind ocelli slightly less than
that between them and the nearest eye-margin (in the other species of the group
it is greater) ; first joint of the flagellum a little shorter than the second ; pro-
notum well developed above, not strongly dentate laterally ; dorsulum closely
punctured, more strongly so than the head ; episternum mesopleuralis punctato-
striate; episternum and epimerum mesotlioracis finely punctured, much more
finely so than the mesopleurje, in fact they appear impunctate ; middle segment
above and on posterior face covered with very strong, irregular ridges or folds
forming large fovese, the longitudinal central channel deep, interrupted at base
of posterior face by a large, hexagonal fovea, on the upper surface a strongly
marked ridge forms a large semi-circular enclosure, at the base of which there
is a transverse, foveolated furrow, sides of middle segment not striated, somewhat
rugose at extreme apex ; first joint of hind tarsi distinctly longer than the longer
spur of hind tibiae ; abdomen closely and microscopically punctured, most dis¬
tinctly beneath, pygidium coarsely and longitudinally rugose. Black; mandibles
except apical third, two large spots on clypeus, which in the only specimen before
me are united by a slender line, scape entirely, pronotum above, tubercles, scu-
tellum, spot on metanotum, apical half of fore and medial femora and a line on
under side, the tips of hind pair, tibiae except a spot within on middle and hind
pair, first joint of tarsi, a broad band on first dorsal segment before apex, pointed
anteriorly in the middle, a large spot on segments 2 and 3, that on second segment
broadest and that on third longest, a band on segments 4 and 5, that on the fifth
segment twice emarginate anteriorly, and a small spot at each side of ventrals 2
and 3, yellow; apical joints of tarsi and tegulse testaceous; clypeus, frontal de¬
pression and cheeks with silvery pubescence, that on the thorax beneath sparser
and more grayish ; wings subhyaline, with a yellowish tinge, nervures and stigma
yellow testaceous. Length 9 mm.
— Long and slender; scape compressed; flagellum distinctly fringed, first
joint a little longer than the second ; space between hind ocelli greater than that
(23)
TRANS. AM. ENT. SOC. XXII.
JUNE, 1895.
178
WILLIAM J. FOX.
between them and the nearest eye-margin ; punctuation of cheeks very dense ;
dorsulum rather strongly punctured ; episternum and epimerum mesothoracis and
sides of middle segment distinctly striated ; fore femora flattened toward the
base, clothed with long white hair, as is also the mesosternum ; fore and medial
tarsi with shorter hair within, their first joint flattened; the four anterior legs
are unusually slender in comparison to the hind pair, and are entirely yellow ;
abdomen with all the dorsal segments maculated except the last; no yellow on
scutellum or postscutellum. Length 9-11 mm.
Illinois; Texas. It is in my opinion very doubtful if the two
forms described by Packard and by myself above, are really sexes
of the one species. They contrast remarkably when placed side by
side, the short, stout form of the female and the male with its long,
slender build ; and moreover their character of sculpture is so dif¬
ferent. The female seems to differ but slightly from that of C. arcjus
which follows in the next group because of the characters of the % .
This fact leads me to believe that the 9 of cingulatus has yet to be
discovered, and that the 9 described above and by Packard belongs
to one of the two preceding groups. Nothing definite can be deter¬
mined, however, until the sexes are worked out better.
57. Crabro coguatus n. sp.
9 . — Head about as in hilaris, but is somewhat more distinctly punctured and
on the front the striation is more evident; first joint of flagellum a little shorter
than the two following joints united ; pronotum not strongly developed above as
in hilaris, shorter, not so distinctly dentate; punctuation of the mesopleurae
coarser than in the species mentioned, and tends to punctato-striate on the epis¬
ternum mesopleuralis ; episternum and epimerum metathoracis more or less
striated ; middle segment less coarsely ridged than in hilaris . the fovese conse¬
quently less marked, the central longitudinal channel above shallower, broader
and widened more basallv; medial and hind tibiae and tarsi more strongly
spinose ; abdomen about as in hilaris. Black ; colored as in the species mentioned,
except that the episternum mesopleuralis and apical portion of the hind tibiae is
black, as are likewise all those parts which, in hilaris. vary from black to yellow¬
ish ; ventral abdominal segments 2, 3 and sometimes 4 with a small, yellow, lateral
spot; markings on first and fourth dorsal segments usually separated medially,
those on the second and third always widely so; wings subhyaline, darker at
apex ; clypeus, cheeks, and thorax beneath more densely with silvery pubescence.
Length 8 9.5 mm.
% . — Scape of antennae compressed, broader by far at apex than at base, widest
medially, however : flagellum short, rather stout, not thickened medially, nar¬
rowed a little to the apex, distinctly fringed beneath, the first joint about one-
third longer than the second ; sides of middle segment coarsely striated, except
medially, where they are sparsely and finely punctured (sometimes the striae are in¬
distinct) ; remainder of middle segment more coarsely sculptured than in the 9 ;
mesosternum clothed with long, dense, white hair, that on the base of fore femora
shorter and sparser, the fore and medial tarsi with shorter and stift’er white hair
within ; last two dorsal segments of abdomen not strongly punctured, the ultimate
NORTH AMERICAN IFOIENOPTERA.
179
but little, if anything, more distinctly so than the penultimate ; coxse in part,
trochanters, fore femora except an elongate spot behind, the medial pair except a
line above and behind, hind pair beneath except apex, four anterior tibiae and
tarsi entirely, hind tibiae at base and within, yellow ; flagellum testaceous beneath .
sixth dorsal segment seldom spotted with yellow. Length 7-9 mm.
Montana. The markings are remarkably constant in the forty
some specimens before me.
58. C'rabro liiluris Sm.
Crabro hilaris Smith, Cat. Hym. Brit. Mus. iv, 416. 9 •
Thyreopus cingulatus Packard (in pt.), Proc. Ent. Soc. Phila., vi, 366, % 9-
9- — Clypeus not strongly carinated, its fore margin broadly truncate; head
finely and closely punctured, most densely so on the front, which is indistinctly
punctato-striate ; first joint of flagellum about as long as the following two joints
united ; pronotum well developed above, rather long, deutate laterally ; dorsulum
strongly and tolerably closely punctured ; episternum and epimemm metathoracis
distinctly striated, though not coarsely so: middle segment above with coarse,
irregular ridges forming broad fovea;, whose shape, size and prominence vary, on
the posterior face these ridges are transverse, central longitudinal channel deep,
but little widened basally and interrupted at base of posterior face by a large
fovea, sides of middle segment, except medially, which is sparsely punctured,
with fine strife ; medial and hind tibiae strongly spinose ; abdomen above, except
the first segment, densely and microscopically punctured : pygidium broad, tri¬
angular, slightly convex, covered with large, separated punctures, and on apical
portion densely clothed with appressed golden pubescence. Black : mandibles on
basal two-thirds, clypeus except narrow apical margin, scape entirely, sometimes
pedicellum, pronotum above, tubercles, episternum mesopleuralis, scutellum and
a dot on each side anteriorly, two spots on metanotum (postscutellum), sometimes
the coxae and trochanters in part, tips of all the femora, particularly the fore and
medial pair, teguke, except a spot within, the size of which varies, and which is
sometimes entirely lacking, a band on the first dorsal segment before apex, two
transverse spots on segments 2 and 3, narrowed within and sometimes touching,
a band ou segments 4 and 5, and irregular markings on ventrals 2-4, yellow ; tarsi
except first joint, and apex of hind tibiae, testaceous ; clypeus and thorax beneath
sparsely and cheeks with silvery pubescence ; color of wings varying from fusco-
hyaline to subhyaline, the nervures and stigma testaceous. Length 9-10 mm.
% . — Clypeus narrower than in the 9 , its fore margin truncate and dentate
laterally; flagellum tolerably slender, somewhat subclavate. indistinctly fringed
with hair beneath ; dorsulum more strongly punctured, towards the sides punc¬
tato-striate ; middle segment more coarsely ridged ; first joint of hind tarsi, com¬
pared with the longer spur of hind tibiae, a little longer ; last two dorsal segments
of abdomen strongly punctured, the ultimate more distinctly so than the penul¬
timate ; in addition to the markings of the 9 , the first two or three joints of
the flagellum, the femora except a dark spot on outer side, four anterior tibiae
entirely, and greater part of abdominal segments 1 and 2, yellow ; the markings
on dorsal segments 5 and 6 sometimes obsolete; wings subfuscous. Length 7-10
mm.
Florida: St. John’s Bluff (Smith), St. Augustine (Johnson),
Jacksonville (Ashmead) ; Texas; Illinois. An examination of the
TRANS. AM. ENT. SOC. XXII.
JUNE, 1895.
180
WILLIAM J. FOX.
types of Thyreopus cingulatus reveals that Packard had confused
hi laris with that species. He remarks, on p. 357, that the 9 de¬
scribed by him is referred doubtfully to cingulatus on account of the
difference in coloration. Strange to say, however, one of the original
types of the 9 does not possess the color marks about which Packard
speaks, and belongs to cingulatus
13. Group nitidiveutris.
Pronotum above large, convex, not crested, rounded at the sides;
middle segment above divided into two smooth convexities ; ocelli
in an almost equilateral triangle ; pygidium ( 9 ) narrowed apically
strongly depressed or excavated ; wings in all our species with several
dark spots; abdomen, as in the two preceding groups, spotted; an¬
tennae and fore legs of males simple.
This group represents in America the genus Blepharipus St. F.
et Br.
59. ( l'sikro mucii 1 i pen u is Sm.
Crabro maculipennis Smith (not Bleph. maculipennis Packard), Cat. Hym
Brit. Mus. iv, 417.
9 . — Head more distinctly and less closely punctured than in confertus, particu¬
larly the front and vertex, and appears more transverse than in that species, im¬
pressed line running from frontal depression to fore ocellus strong and wide;
pronotum at the sides sub-rounded, and short; dorsulum punctured like the ver¬
tex ; scutellum sparsely punctured anteriorly, more closely so on posterior portion ;
episternal suture of mesopleurae very heavily foveolate, more so than in confertus ;
base of the enclosure of middle segment with the usual transverse row7 of large
fovea;, the central furrow broadened basally, longitudinally ridged, the outer
furrow forming the enclosure much more heavily foveolated than in the species
mentioned above, posterior face coarsely rugose apically, the lateral ridges strong
and margined outwardly by a strongly foveolated furrow ; abdomen finely and
sparsely punctured above, except the first segment, which is impunctate, and,
excluding the pygidium, the punctures are most distinct and closest on fifth seg¬
ment; pygidium as usual. Black, including the mandibles and episternum meso-
pleuralis; scape entirely, pronotum, tubercles, line on scutellum anteriorly, spot
on each convexity of the enclosure of middle segment, tips of fore and medial
femora, tibia* except within and apex of hind pair, first joint of tarsi, a trans¬
verse spot on each side of dorsal abdominal segments 2-4, and a band on the fifth,
somewhat narrowed medially, pale yellow; clypeus and inner orbits beneath with
dense, silvery pubescence, that on the cheeks sparser; wings as in confertus, but
the dark spots are more distinct; head and thorax above with pale fuscous pu¬
bescence, that on thorax beneath pale. Length 11 mm.
% . — Front and vertex more coarsely punctured ; greater part of fore femora,
spot on each side of the sternum, anteriorly and two spots on clypeus, pale yel¬
low ; dark spots on wings very strongly marked. Length 10 mm.
NORTH AMERICAN HYMENOPTERA.
181
Franconia, New Hampshire (Mrs. Slosson). The markings are
much paler in this species than in the others of the group, and the
head, particularly in the female, is more transverse. From what
Packard states regarding the variability of the specimens of his
maculipennis, it seems to me that he had confused more than one
species.
60. Crabro con tortus u. sp.
Blepharipus maculatus St. Farg. and Brulle (not Fabr.), Ann. Soc. Ent. Fr.
ii, 730, 1834.
Crabro ( Blepharipus ) maculatus Dhlb., Hym. Eur. i, 344.
Blepharipus maculipennis Pack, (non Crabro maculipennis Sin.), Proc. Ent.
Soc. Phila., vi, 372, 9 ^ .
9 • — Clypeus of the usual form in this section ; head finely and closely punc¬
tured, more finely on the cheeks, posterior lateral angles rounded, not prominent ;
hind ocelli placed in shallow depressions, which are not so distinct as in nitidi-
ventris, and the impressed line running from frontal depression to fore ocellus is
not quite so deep as iu that species ; pronotum less rounded at the sides than in
the species above mentioned, and is shorter ; dorsulum closely punctured like the
vertex, scutellum a little more sparsely so ; episternal suture of mesopleurge dis¬
tinctly foveolate : enclosure of middle segment with a broad, transverse, heavily
foveolated furrow at base, the central longitudinal channel broadened basally and
longitudinally ridged (or as Packard puts it, “the furrow widens toward the base
of the enclosure so as to include two of the fossae”), the furrow bounding the en¬
closure outwardly also foveolate, but not so strongly so as the basal furrow, poste¬
rior face of middle segment not rugose apically, except, perhaps, the extreme
apex, the lateral ridges extending up somewhat above the middle, the outer fur¬
row distinct, but not foveolate ; abdomen finely and closely punctured above,
sparsely so on first segment; pygidium somewhat more coarsely punctured.
Black, including the mandibles, episternum mesopleuralis and convexities of
enclosure of middle segment; two spots on clypeus, sometimes absent, scape, line
on pronotum sometimes interrupted medially, tubercles, line on scutellum ante¬
riorly, spot 04 tegulje, apex of fore and medial femora, tibia*, except a spot on
inner side of anterior and middle pairs and apex of hind pair, first joint of all
the tarsi, a transversely elongated spot on each side of dorsal abdominal segments
2-4 and a band on segment 5, yellow ; sometimes the first segment has two small
spots on first segment ; sixth segment has two spots, which are, however, usually
concealed through retraction of the segment; apical joints of tarsi brownish,
those of the anterior pair palest ; clypeus, inner orbits beneath and cheeks with
silvery pubescence; head and thorax with a sparse, pale fuscous pubescence,
longest, above : wings subhyaline, with a faint yellowish tinge basally, nervures
yellow testaceous, stigma black, the spot in marginal cell scarcely evident.
Length 9-10 mm.
$ . — Mandibles except base and apex, pedicellum and joints 1 and 2 of flagellum
beneath yellow, a spot on each side of the mesosternum anteriorly and on each
side of third ventral segment of abdomen also yellow (sometimes the mandibles
are black and the spots on mesosternum and ventral surface of abdomen are
wanting) ; scutellum either entirely black or with a yellow stripe, or two dots of
that color; yellow on pronotum sometimes wanting; fore femora entirely yellow
TRANS. AM. ENT. SOC. XXII.
JUNE. 1895.
182
WILLIAM J. FOX.
beneath ; the % differs principally from that of the following species, maculipennis,
by the less strongly foveolated episternal suture of mesopleurse and the non.
foveolated furrows, that bound the lateral ridges of the posterior face of middle
segment outwardly ; spot in marginal cell much more distinct than in the female.
Length 8 mm.
Colorado. Confertus agrees better with the description of macu¬
latus St. Farg. (non Fab.) than does the preceding species, but is
evidently different from the species to which Smith gave the name
maculipennis, that author stating that maculatus St. Farg. “is quite
distinct from the maculatus of Fabricius.” The specimens which
Smith possessed at the time of renaming maculatus St. Fargeau, ac¬
cording to Smith’s remarks regarding them, also appear different
from St. Fargeau’s, so that it seems to me that confertus probably
represents the maculatus of St. Fargeau and the maculipennis of
Packard (not Smith) and that Smith’s maculipennis is a different
species. It is possible that nit idi vent ris is Packard’s maculipennis,
but that author makes no mention of the yellow spots on middle
segment which are constant in the specimens of the former species
before me. It is a question to be settled by the examination of
either the types of St. Fargeau and Smith.
61. Crabro iiifi of incavus, but the fact of
color markings being so strikingly different induces me to consider
it as different.
70. Crabro incavus n. sp.
J. — Anterior margin of clypeus indistinctly dentate laterally, with a medi-il
production ; head finely punctured, the front less strongly than in the other spe¬
cies of this section; space between hind ocelli somewhat less than that between
them and the nearest eye-margin ; a distinct impressed line runs back from the
fore ocellus; first joint of flagellum nearly one-third longer than the second;
pronotum indistinctly crested, at the sides obtusely angular ; dorsulum with the
punctures less close than those of the front ; episternal suture of mesopleune
sinuous; middle segment with the basal excavated portion including at least one-
half of the enclosed area and with coarse, somewhat radiating strise, the medial
furrow of upper surface broad, with a few transverse strise basally, posterior face
not striated or roughened, the lateral ridges distinct, particularly beneath, their
outer furrow not foveolated or strongly marked; abdomen about as long as head
and thorax united, at any rate not longer, microscopically punctured, the first
segment almost evenly united with the second; pygidium with large, scattered
punctures. Black ; mandibles apically, reddish ; scape in front, line on pronotum,
tubercles, minute spot on scutellum, fore and medial femora at tips, anterior tibiae
in front, the remaining pairs basally, first two joints of fore and medial tarsi and
first joint of hind tarsi, except apex, yellowish ; clypeus, inner orbits beneath,
cheeks and thorax on sides and beneath sparsely, with silvery pubescence ; legs
and abdomen with a sparse, silvery sericeous pile ; wings subhyaline, paler basally,
iridescent, nervures brownish. Length 5.5 mm.
Colorado (Morrison). The characters of the metathorax distin¬
guish this species at once from its allies.
71. Crabro minimus Pack.
Blepharipus minimus Packard, Proc. Ent. Soc. vi, p. 377, 9 % .
9 . — Anterior margin of clypeus dentate laterally and with a distinct promi¬
nence medially ; head punctured as usual in species of this section ; no impressed
line extending from fore ocellus to occiput; first joint of flagellum distinctly
longer than the second ; pronotum narrowly crested, at the sides angular ; punc¬
tures of mesopl eurse a little stronger and more separated than those of the dor¬
sulum. the episternal suture a little curved ; basal excavation of middle segment
well marked, and, with the lines forming the enclosure, foveolate, the longitu¬
dinal furrow, however, not foveolate, the convexities within the enclosure micro¬
scopically striated as in propinquus, posterior face apparently finely roughened, or
NORTH AMERICAN HYMENOPTERA.
189
transversely striated, the sides of middle segment finely striated, sometimes
smooth ; abdomen slightly shorter than head and thorax united ; pygidium with
large, scattered punctures. Black; mandibles except apex, scape in front, pro-
notum above, tubercles, tips of anterior femora, fore and medial tibiae, except
within, base of hind pair, fore tarsi except apical joints,, and first joint of hind
tarsi at base, yellow ; face, cheeks and sides of thorax with silvery pubescence.
Length between 4 and 5 mm.
Brunswick, Maine (Packard) in August; Massachusetts; District
of Columbia ( Ashmead ) ; Michigan. In the specimen before me
from Massachusetts, which I believe was identified by Packard, al¬
though evidently not one of the types, the pronotum is angular at
the sides. In the original description the pronotum is said to be
“ not angulated at the sides.” While I believe the specimens before
me to be minimus, yet they may be distinct. I have not seen the A,
which seems to lie much like the $ , except that the fore femora are
said to be yellow beneath.
72. Crabro propiuqims n. sp.
9 . — Anterior margin of clypeus slightly dentate laterally, with a median
prominence; head finely punctured, the front most distinctly so; space between
hind ocelli slightly less than that between them and the nearest eye-margin ; a
faintly impressed line extends from the fore ocellus to the occiput ; first joint of
flagellum more than oner-quarter longer than the second ; pronotum well crested,
angular at the sides; dorsulum punctured like the front, except that the punc¬
tures are not so close; mesopleur® a little more distinctly punctured than the
dorsulupj, its episternal suture obtusely angular in about the middle; all im¬
pressed lines of middle segment foveolate, except the large, central channel on
posterior face, the two convex surfaces within the enclosure are microscopically
striated, these striae are so fine as to be difficult to see, except when the insect is
held in certain positions, and are oblique, posterior face with fine though distinct,
transverse striations, the lateral ridges distinct ; abdomen shorter than head and
thorax; pygidium flat, with large, separated, though not sparse, punctures.
Black ; mandibles except apex, scape beneath, pronotum, tubercles, tips of fore
femora, fore and medial tibiae, except a line within, hind tibia; at base, and tarsi
except apical joints, yellow; wings hyaline, iridescent, nervures and stigma
black ; clypeus, inner orbits beneath, cheeks, and sides of thorax more sparsely,
with silvery pubescence ; abdomen with a sparse, silvery sericeous pile. Length
5 mm.
Texas (Birkman). It is somewhat larger than minimus, although
closely related.
73. Crabro maculiclypeus n. sp.
9 . — Anterior margin of clypeus subtruncate, not dentate ; head finely punc¬
tured, as usual the punetation of front most distinct : first joint of flagellum about
one-quarter longer than the second ; pronotum well crested, more so than in lentm,
but less than in scutellatus , the lateral angles obtuse ; dorsulum apparently more
finely and less closely punctured than the front; episternal furrow of mesopleurse
TEANS. AM. ENT. SOC. XXII.
JUNE. 1895.
1 90
WILLIAM J. FOX.
sinuous ; middle segment very much as in lentm, but the longitudinal, medial,
impressed line is not foveolate ; abdomen a little shorter than head and thorax
united, microscopically punctured, narrower than in lentm, the first segment nar¬
rower and longer; pygidium flat, with large, sparse punctures. Black; mandi¬
bles, except apex, scape in front, two spots on clypeus, pronotum, tubercles, scu-
telluin, tips of fore and medial femora, fore and medial tibiae except within, basal
portion of hind tibiae, two basal joints of fore and medial tarsi and first joint of
hind pair yellowish, the apical joints of the fore and medial tarsi yellow testa¬
ceous; clypeus, inner orbits beneath, cheeks and sides of thorax sparsely, with
silvery pubescence ; abdomen with a rather distinct, silvery sericeous pile ; apex
of pygidium reddish, antennae beneath pale testaceous. Length 4.5-5 mm.
% . — Anterior margin of clypeus dentate laterally, and with a medial promi¬
nence ; first and second joints of flagellum about equal in length ; head more
finely punctured than in the 9 : abdomen somewhat clavate. the last segment
with large, coarse punctures ; otherwise very much like the 9 •
Colorado (Morrison and Gillette); Utah. The yellow mandibles,
spots on clypeus serve, superficially, to separate this species from
lentm. Mr. Johnson has given me a specimen collected in either
Pennsylvania or New Jersey, probably the latter State.
74. ('ral)ro lentils n. sp.
9 .—Anterior margin of clypeus with a small, indistinct tooth laterally and in
the middle; head more finely punctured than in scutellatus, the punctures on front
most distinct, while those on cheeks and upper part of head behind eyes are in¬
distinct; antennae tending toward subclavate, the first joint of flagellum about
one-quarter longer than the second ; pronotum tolerably well crested above, but
less so than in scutellatus, lateral angles obtuse ; dorsulum punctured similarly to
the vertex ; episternal suture of the mesopleurse not angulated, but forming a
slight curve ; middle segment with the transverse furrow at base, the lines form¬
ing the enclosure, and the longitudinal medial furrow, all strongly foveolated,
along side the lateral ridges of posterior face, both inside and outside, there is a
strong foveolated furrow and towards the top of the.sides of middle segment there
is another, somewhat oblique, foveolated furrow ; abdomen shorter than head and
thorax united, rather broadly ovate, microscopically punctured, the first segment
short and broad ; pygidium with large, sparse punctures. Black ; mandibles ex¬
cept base and teguhe reddish testaceous; scape in front, pronotum, spot on scutel-
lum, which varies in size, fore and medial tibiae except a line within, basal portion
of hind tibiae and two or three basal joints of the tarsi, yellowish ; wings hyaline,
iridescent, nervures brownish ; clypeus, inner orbits beneath, cheeks and sides of
thorax sparsely, with silvery pubescence. Length 4.5-5 mm.
Algonquin, Illinois (Nason); Utah; Jacksonville, Florida (Ash-
mead). One specimen lacks the yellow on scutellum.
75. Crabro scutellatus Say.
Orabro scutellatus Say, Long’s Second Exped., Appendix, p. 341.®
9. — Anterior margin of clypeus rather broadly rounded out; head finely,
though distinctly punctured, the punctuation of the front being especially promi-
* See remarks under C. impressifrom regarding this species.
NORTH AMERICAN HYMENOPTERA.
191
nent, while that on the cheeks is indistinct ; impressed line extending from frontal
depression to the fore ocellus deep; antennae tolerably slender, the flagellum not
at all clavate, its first joint scarcely one-quarter longer than the second ; pronotum
strongly crested above, the lateral angles obtuse ; dorsulum punctured about like
the vertex, strongly convex : mesopleurse more distinctly punctured, its episternal
suture rather distinctly angulated a little above the middle ; base of middle seg¬
ment with a transverse, foveolated furrow, the impressed lines forming the en¬
closure distinct, as is also the longitudinal, medial line; posterior face divided by
a deep and broad, longitudinal channel, not roughened, lateral ridges becoming
obsolete above; medial and hind tibiae not strongly spinose ; abdomen somewhat
longer than head and thorax united, microscopically punctured above, impunctate
beneath, the first segment decidedly narrowed basally, tending a little in form to
subpetiolate ; pygidum with coarse, scattered punctures. Black; mandibles and
teguhe testaceous ; scape in front, a continuous stripe on pronotum and tubercles,
scutellum, tips of fore and medial femora, medial and anterior tibiae except a line
on inner side; basal third of hind tibiae and two first joints of the tarsi, yellow¬
ish ; wings hyaline, iridescent, nervures and stigma brownish ; clypeus. inner
orbits, cheeks and sides of thorax sparsely, with silvery pubescence. Length 6 mm.
Pennsylvania (Say) ; Colorado. The specimen before me agrees
tolerably well with Say’s description, particularly regarding the yel¬
low of pronotum, which is connected with that of the tubercles. I
should think, however, that this is apt to vary.
76. Crabro similis n. sp.
9 . — Anterior margin of clypeus truncate medially, very slightly or not at all
dentate laterally ; head finely punctured, the front and vertex more closely so
than the region behind the ocelli ; depression extending upward from frontal de¬
pression not strongly marked, almost obliterated before the anterior ocellus ; space
between hind ocelli decidedly less than that between them and the nearest eye-
margin ; first joint of flagellum somewhat more than one-quarter longer than the
second ; pronotum with the crest not very pronounced, at the sides obtusely an¬
gular ; dorsulum punctured like the vertex ; episternal suture of mesopleune a
little, sinuous; enclosure of middle segment well marked, the lines or furrows
forming it well marked and foveolate, as is likewise the longitudinal furrow
dividing the enclosure, this furrow is also broadened basally, two convexities of
enclosure very finely and obliquely striated, posterior face apparently finely and
transversely rugose; abdomen a little shorter than head and thorax united; py-
gidium broad, flat, with large, separated punctures. Black ; mandibles except
apex, and the tarsi yellow ; clypeus, antennae entirely, stripe on pronotum ex¬
tending to and including the tubercles, teguhe, scutellum, metanotum (postscu-
tellum) and legs, except tarsi, which are colored as mentioned above, and hind
femora and tibiae, which are somewhat marked with blackish, fulvous ; apical
margins of abdominal segments broadly, pale testaceous; clypeus, inner orbits,
cheeks and thorax on sides beneath, more or less with silvery pubescence ; ab¬
domen with a silvery sericeous pile. Length 5.5 mm.
-Jacksonville, Florida (Ashmead). Has the facies of C. impressi-
frons. The color markings will distinguish it from the other species
of this group.
TRANS. AM. ENT. SOC. XXII.
JUNE. 1895.
192
WILLIAM J. FOX.
16. Group hispidus.
A single species, differing from those of ater group by the broad,
non-excavated pygidium, and from those of mi minus group by the
very low triangle which the ocelli form, hairy head and thorax, and
the recurrent vein being received by the submarginal cell in its apical
third. The £ is unknown, but will probably present group charac¬
teristics similar to those of the female.
77. C'rabro liispiriiis n. sp.
9 . — Clypeus strongly carinated, the anterior margin with the broadly produced
portion incurved medially ; vertex finely punctured, the front above the depres¬
sion opaque, and has the appearance of being striato-puuctate ; frontal depression
broad and glabrous; ocelli in a low triangle, but not quite forming a curved line,
space between hind pair somewhat less than that between them and the nearest
eye-margin ; first joint of flagellum about one-third longer than the second ;
pronotum at the sides anteriorly with a blunt tooth ; dorsulum with rather coarse,
shallow punctures, longitudinally striated apically; mesopleurse with sparse
punctures; middle segment without a basal enclosure, rugose, particularly above,
the longitudinal furrow on upper surface not reaching the base and bounded by
a strong ridge at either side, lateral ridges of posterior face indistinct, sides of
middle segment tolerably smooth ; tibiae strongly spinose ; wings fusco-hyaline,
iridescent, nervures and stigma black, the recurrent vein received by the sub-
marginal cell between middle and apex ; abdomen microscopically punctured,
apical segments most distinctly, ventrally almost impunctate; pygidium trian¬
gular, rounded apically, coarsely punctured, flat. Black ; tarsi and apical margin
of ventral abdominal segments testaceous; head, particularly between frontal
depression and vertex, and thorax above with coarse, dark fuscous hair, that on
under part of thorax and femora, pale; clypeus only with silvery pubescence.
Length 9 mm.
Mt. Hood, Oregon. One specimen.
17. Group insolens.
Pronotum anteriorly with a strong crest, which terminates later¬
ally in a sharp tooth or projection ; abdomen short, ovate, first seg¬
ment broad ; pygidium narrowed to the apex, acute, depressed or
excavated apically. The head is almost square above, but this may
be but a specific character.
78. C'rabro insolens n. sp,
9 . — Head broader than the thorax, almost square above, in consequence of its
length almost equaling its width, apparently impunctate; ocelli forming a trian¬
gle, the space between the hind pair slightly greater than that between them and
the nearest eye-margin ; frontal depression deep, but no impressed line extending
to the fore ocellus; pronotum with a strongly marked, transverse impression on
each side, anteriorly with a strong crest, which terminates laterally in an acute
tooth or projection, and is highest medially ; dorsulum impunctate, without the
NORTH AMERICAN HYMENOPTERA.
193
usual impressed line on anterior portion ; middle segment smooth, without an
enclosure; posterior face widely channeled down the middle, the lateral ridges
tolerably distinct ; abdomen shorter than head and thorax united, ovate ; py-
gidium acute at apex, convex basally, depressed along the sides and on apical
portion. Black ; mandibles except apex, scape in front, tibiae and tarsi, yellowish
testaceous, the tibiae darker within ; wings hyaline, iridescent, nervuresand stigma
black ; clypeus and lower part of inner orbits, with silveiy pubescence. Length
about 3 mm.
Colorado (Gillette). Its square head, smooth, subopaque head
and thorax and small size will easily distinguish it from the other
small, black species of Crabro.
18. Group planipes.
Fore tarsi of S greatly flattened or distorted, i. e., the first joint
twisted ; otherwise as in group ater. Female unknown.
79. Crabro planipes u. sp.
% . — Anterior margin of clypeus subtruncate, or slightly rounded out in the
middle : head finely punctured, the front more distinctly so, and on occiput most
closely ; space between hind ocelli a little less than that between them and the
nearest eye-margin ; a strongly marked impressed line extends back from the
anterior ocellus ; impressed line extending from frontal depression well marked
and reaching the fore ocellus; first joint of flagellum a little longer than the
second ; pronotum rather higher above than in the other species of this group,
laterally obtusely angular ; dorsulum more strongly punctured than the front;
enclosure of middle segment well marked, basally with numerous, distinct, lon¬
gitudinal strife, posterior face rugose toward apex, the lateral ridges strong ; fore
tarsi flattened, particularly the first joint; abdomen with microscopical punc¬
tures, those on the last dorsal segment somewhat more distinct. Black, including
the mandibles ; scape in front, pronotum, tubercles, scutellum, fore femora, ex¬
cept a narrow dark line behind, medial femora in front, fore tibife except a line
behind, the medial and hind tibiae except the apical two-thirds of posterior sur¬
face, fore tarsi except a dark spot on first joint at apex and last two joints, medial
tarsi almost entirely, and basal half of first joint of hind tarsi, yellow; clypeus,
inner orbits and cheeks and sides of thorax more sparsely with silvery pubes¬
cence ; thorax beneath with longer, pale pubescence. Length 4 mm.
Colorado. Agrees tolerably well with the description of C. Har-
risii Packard, but is evidently distinct.
80. Crabro tarsal is n. sp.
'J, . — Clypeus distinctly carinated, its fore margin witli the medial produced
portion somewhat angular at apex ; vertex with fiue punctures, those on the front
a little more distinct; space between hind ocelli much less than that between
them and nearest eye-margin ; impressed line extending from frontal depression
to fore ocellus feebler than usual, becoming obsolete just before the anterior
ocellus ; first joint of flagellum longer than the second ; the transverse apical
impressed line of pronotum is evident at the sides only, and before it, in about
the middle of pronotum is a short and stronger, impression, which gives the pro-
(25)
TRANS. AM. ENT. SOC. XXII.
JUNE, 1895.
194
WILLIAM J. FOX.
notum a subangulav appearance at the sides anteriorly; dorsulum more strongly
punctured than the front; enclosure of middle segment strongly marked, the
medial impressed line broadened basally, within the enclosure smooth except the
foveolated base, between it and sides of middle segment rugose, posterior face
rugose toward apex, lateral ridges tolerably distinct and bordered outwardly by
a strong furrow ; first joint of anterior tarsi greatly flattened, twisted, bent in
the middle: wings subhyaline, iridescent, nervures and stigma brownish, recur¬
rent vein received by the submarginal cell beyond the middle; abdomen micro¬
scopically punctured, the apical segments most distinctly. Black ; fore and medial
femora yellowish testaceous, darker above and toward apex, their tibiae and tarsi
yellow, the former with a dark testaceous stripe on outer side, trochanters yel¬
lowish. hind tibiae at base and their tarsi basally, pale yellow; apical margins of
abdominal segments narrowly and obscurely testaceous; clypeus, front, cheeks
with dense silvery pubescence, which is also present on vertex and thorax in a
lesser degree, the thorax beneath and fore femora with long, pale pubescence.
Length 6 mm.
New York. One specimen. Easily distinguished by the entirely
black thorax, shape of first joint of fore tarsi and pale pubescence
on fore femora.
19. Group (iter.
Cuelocrabro Thomson, is apparently represented in America bv the
species of this group. The first abdominal segment inclines slightly
to subpetiolate, being longer and narrower than the second ; the
pygidial area is triangular, narrowed and strongly excavated api-
cally ; ocelli in an equilateral triangle; recurrent nervure generally
received by the marginal cell a little beyond the middle, although
sometimes received more toward the base ; pronotum rounded later¬
ally. The males appear difficult to separate from those of the
miminus group, but the pronotum in that group is crested, and the
last segment of abdomen is more strongly punctured than the pre¬
ceding one, while in this group the last two segments are punctured
about the same.
81. Crabro Iinpressilrons Sm.
Crabro tibialis Say (uec Fabr.), Long’s Second Exp.. Appendix, p. 340.
Crabro impressifrons Smith, Cat. Hym. Brit. Mus., i v, 417..
Blepharipus impressifrons Packard, 1. e., vi, p. 374, 9 .
Blepharipus scutellatus Packard, (non Say), ibid. p. 375. 'J, .
9 . — Clypeus distinctly carinated, the anterior margin with the medial pro¬
duced portion truncate; head very finely punctured, the front most strongly;
space between the hind ocelli somewhat less than that between them and the
nearest eye-margin, all three forming a tolerably low triangle; frontal depression
deep, glabrous, the impressed line extending to fore ocellus also deep; first joint
of flagellum scarcely one-quarter longer than the second; dorsulum more dis¬
tinctly punctured than the vertex ; pronotum apparently impunctate, not trans-
NORTH AMERICAN HYMENOPTERA.
195
versely impressed before apical margin ; middle segment polished, glabrous, the
enclosure distinct, but the impressed lines forming it become obscure toward base
and are not foveolate. the medial furrow perceptibly widened basally, lateral
ridges on posterior face distinct, the outer furrow absent : legs rather stout, the
medial and hind tibiae strongly spin ose ; wings subhyaline, iridescent, with a faint
fuscous cloud in the marginal cell, the recurrent vein received by the submar¬
ginal cell a little beyond the middle ; dorsal abdominal segments 3-5 indistinctly
punctured, beneath the abdomen impunctate; pygidium as usual in the species
of this group. Black; scape, except a line behind, pronotum, scutellum, apex of
fore and medial femora, tibiae and base of tarsi, bright yellow, the tarsi toward
apex somewhat testaceous ; tips of mandibles and tegulie, reddish testaceous, the
apex of the abdominal segments broadly testaceous; clypeus, inner orbits, cheeks,
and sides of thorax with silvery pubescence. Length 6-7 mm.
'J, . — Anterior margin of clypeus with a small medial production, which is
truncate; head more distinctly punctured than in the female, the space between
hind ocelli much less than that between them and the nearest eye-margin ; first
joint of flagellum longer than the second; pronotum before apex with a trans¬
verse impressed line, which is strongest toward the sides; apical margin of the
abdominal segments broadly smooth, obscurely testaceous; fore and medial
femora reddish testaceous, with a dark line above, their apices yellow ; hind tibiae
with a dark spot near apex ; head and thorax above with distinct, pale fuscous
pubescence. Length 5 mm.
Massachusetts; New York; Illinois (Algonquin, Nason). The
species described by Packard as lileph. scutellatus Say, I consider the
l of this species. It is doubtful if this is Say’s species, as it differs
somewhat from the description, and if it were it would necessarily
have to fall, being the % of impres-sifrons.
82. Crabro Harringtonii n. sp.
^ . — Very close to nigricornis, but much smaller; head indistinctly punctured,
including the front and vertex, glabrous; pronotum at the sides rounded, without
a prominence; dorsulum rather indistinctly punctured, but more distinctly so
than the head ; middle segment with the enclosure not well marked, but more
distinct than in nigricornis, posterior face rugose apieally, the medial furrow much
broadened above and pointed beneath, while in nigricornis this furrow is long and
fusiform, lateral ridge distinct and with a strong, outer, lateral furrow, which is
foveolate. Black, including the scape; tips of mandibles and pygidium at tip,
reddish ; fore tibia? in front, medial and fore tarsi, bases of hind tibiae and tarsi
obscurely, yellowish testaceous. Length 4.5 mm.
Ottawa, Canada (Harrington ).
83. Crabro nigricornis Prov.
Blepharipus nigricornis Prov., Add. Hym. Quebec, p. 294, % .
£ .—Clypeus feebly carinated, its anterior margin in the middle crenulated ;
head finely punctured, the front much more strongly so; space between the hind
ocelli a little less than that between them and the nearest eye-margin ; frontal
depression broad and polished, but not deep the line extending to the fore ocellus
distinct as usual ; first joint of flagellum fully one-quarter longer than the second ;
june, 1895.
TRANS. AM. ENT. SOC. XXII.
WILLIAM J. FOX.
196
dorsulum more distinctly punctured than the vertex, but less so than the front;
pronotum at the sides with a small, blunt prominence, which, however, does not
alter its appearance to any extent ; middle segment with scarcely any trace of
an enclosure, the medial impressed line, however, distinct, lateral ridges of pos¬
terior face short and becoming obsolete above and their lateral furrow absent ;
abdomen as usual in the members of this group. Black : scape in front and base
of hind tibiae, yellow ; clypeus, cheeks and sides of thorax with silvery pubes¬
cence; legs with a silvery sericeous pile; wings subhyaline, iridescent, a slightly
darker cloud in the marginal and submarginal cells, nervures and stigma black,
recurrent vein received by the submarginal cell beyond the middle. Length
7.5-8 mm.
'J, . — Medial production of clypeus smaller than in impressifrons : frontal de¬
pression deep; space between hind ocelli distinctly less than that between them
and the nearest eye-margin ; first joint of flagellum longer than the second ; pro¬
notum with a transverse impressed line before its apical margin : fore and medial
legs pale testaceous, their femora with a darker stripe, hind tibiae yellow at base,
testaceous beyond on inner side ; head and thorax above with pale pubescence.
Length 5.5-6 mm.
Canada (Harrington) ; Montana; Virginia. The western speci¬
mens are the smallest, hut otherwise agree with the eastern speci¬
mens. In the original description of this species the antennae are
said to he entirely black, but in a series of seven specimens but one
has not the scape marked with yellowish.
84. C’rabro liigror n. sp.
9 . — Clypeus distinctly carinated, its fore margin in the middle rounded out;
head with fine, distinct, punctures, somewhat stronger on front : space between
hind ocelli about equal to that between them and the nearest eye-margin ;
frontal depression and impressed line as in the preceding species; first joint
of flagellum scarcely one-quarter longer than the second ; pronotum with a
transverse impression or furrow before its hind margin, its punctuation, as well
as that of the dorsulum, a little more distinct than that of the vertex; lines
forming the enclosure of middle segment wide and deep, narrower, however,
than those in cinctipes, the smooth areas, therefore, larger and more distinct,
bordering the enclosure laterally, is a tolerably smooth space, which narrows
toward base of metathorax, and is bounded outwardly by a strong, coarsely
sculptured furrow, which extends down to the apex of middle segment just
outside the lateral ridges of the posterior face, the latter with some trans¬
verse rugse apically; middle and hind tibiae tolerably well armed with spines;
wings subhyaline, strongly iridescent, nervures and stigma brownish ; first two
dorsal segments of abdomen impunctate, the remainder microscopically punctured ;
pygidium as usual. Black ; mandibles at apex, tegulae and apex of abdomen,
reddish testaceous; tarsi testaceous; clypeus with dense silvery pubescence, that
on the cheeks and thorax on sides and beneath, sparse ; legs with silvery sericeous
pile. Length 5 mm.
New Hampshire. One specimen. The absence of transverse im¬
pressed line on proiioiuin, greater space between hind ocelli, clearer
NORTH AMERICAN HYMENOPTERA.
197
wings and sculpture of metathorax will separate this species from
ater.
85. Crabro ciuctipes Prov.
Blepharipus cinctipes Provaneher, taun. Ent. Can. ii, 66/, % .
q . — Clypeus well carinated, the produced medial portion subtruncate ; head
with tolerably fine, distinct, punctures, finer on cheeks and stronger on front ;
ocelli forming a lower triangle than in ater. the space between the hind pair but
little, if anything, less than that between them and the nearest eye-margin, the
depressions in which the ocelli are situated not so well marked as in ater ; frontal
depression and impressed line as in that species ; antennae somewhat shorter, the
first joint of flagellum not quite one-quarter longer than the second ; pronotum
smaller than in ater, and with the dorsulum somewhat more strongly punctured
than the vertex ; mesopleurse with punctuation about similar to that oi the vertex ;
lines forming the enclosure and the longitudinal furrow of middle segment wide
and deep, the enclosed smooth areas consequently small ; bounding the enclosure
laterally is a narrow, smooth space, between which and the sides there is a de¬
pression or furrow, which is rugose, the posterior face with coarse, transverse
rugae, and outside of the lateral ridges a strongly foveolate furrow runs : wings
subhyaline, iridescent, the apical half darkest, nervures and stigma black; first
two dorsal segments glabrous, impunctate. the remaining microscopically punc¬
tured, the fifth most strongly, pygidium convex basally, excavated toward apex.
Black ; mandibles at apex, tegulae and apex of abdomen, reddish testaceous ; tarsi
testaceous ; base of hind tibiae, obscurely, yellow ; clypeus with dense, silvery
pubescence, that on the cheeks and thorax, on sides and beneath, sparse, legs with
a silvery sericeous pile. Length 7 mm.
^ , _ Clypeus distinctly carinated, its anterior margin armed with three strong
prominences, the middle one of which is largest ; space between hind ocelli a
little less than that between them and the nearest eye-margin ; punctuation of
dorsulum and scutellum feebler than in the 9 ; middle segment about as in the
9 . except that the smooth areas within the enclosure are smaller and indistinct;
joints 2-4 of anterior tarsi, 1-3 of medial tarsi, basal half of joints 2 4 of hind
tarsi and their tibiae at base, obscurely, yellowish. Length 6.5 mm.
Canada (Harrington). The greater space between hind ocelli,
sculpture of metathorax, form of clypeus and color of legs in 1
will distinguish this species from C. ater and nigror.
86. Crabro ater Cress.
Crabro ater Cresson, Proc. Ent. Soo. Phila., iv, p. 477, 9 •
Blepharipus ater Packard, ibid, vi, p. 3/4, 9 •
£ _ _ Clypeus distinctly carinated, its fore margin rounded out medially ; head
with distinct, tolerably fine punctures, finer on cheeks and stronger on front ;
ocelli in an equilateral triangle, situated in strong depressions, the space between
the hind pair distinctly less than that between them and the nearest eye-margin .
frontal depression wide and distinct, glabrous, the line extending to the fore
ocellus strong; first joint of flagellum about one-quarter longer than the second ;
pronotum convex above, impressed medially, rounded laterally, tiansversely de¬
pressed before apical margin, and like the greater part of the thoiax is punctuied
similarly to the vertex; mesopleurse more finely and sparsely punctured ; middle
june. 1895.
TRANS. AM. ENT. SOC. XXII.
WILLIAM J. FOX.
198
segment with the enclosure strongly marked, the impressed lines enclosing it
foveolate, as well as its base, where there are sometimes a few short, longitudinal
striae, the medial furrow deep and extending the entire length of the metathorax,
the posterior face with some tolerably coarse, transverse rugae apically ; middle
and hind tibia? with short, stout spines; wings fusco-hyaline, paler basally, iri¬
descent, nervures and stigma black ; abdomen glabrous, microscopically punc¬
tured, above on the fifth segment more strongly, beneath impunctate; pygidium
with strong, separated punctures, convex at base, excavated apically. Black ; tips
of mandibles, tegulse and apex of abdomen sometimes reddish testaceous; cly-
pcus with dense, silvery pubescence, that on cheeks, thorax on sides and beneath,
sparser; legs entirely black, with a silvery sericeous pile. Length 7.5-8 mm.
% . — Glypeus strongly carinated, its fore margin rounded out medially ; bead a
little more finely punctured than in the 9 1 impressed lines on metathorax above
stronger, the posterior face with the apical ruga? stronger, as are likewise the lateral
ridges, and just outside of these is a strong furrow within a short distance of the
metathoracic stigrase (this is less distinct in some specimens than in others); ab¬
domen microscopically punctured above and beneath, the last two dorsal segments
most strongly. Length 6.5 7 mm.
Colorado; Washington; Mt. Hood, Oregon; Brunswick, Maine
(Packard); New Hampshire. The specimen with yellow scape and
base of hind tibiae, recorded from West Virginia, by Packard, is
evidently another species, and very likely C. nigricornis.
20. Group abdominalis.
In this group the abdomen is petiolate, but the first segment is
scarcely nodose at the apex ; pygidium broad, not depressed ; the
head is greatly produced behind the eyes; the ocelli forming a low
triangle, the hind pair being widely separated; sculpture of head
and thorax coarse, mesopleurae ridged anteriorly. In this latter
character the group shows its relationship to the preceding groups,
all of which exhibit it in a more or less developed state. In the
last two groups, occidental! * and pedicellatas, this character is wanting.
87. Crabro abdominalis n. sp.
9 . — Glypeus very short, flat; just behind it, between the an ten me, there is a
short, stout projection ; mandibles large, at the apex armed with two very strong,
diverging teeth, which are extremely large for the size of the species; head cov¬
ered with coarse, rather close punctures, finer on the cheeks; ocelli in a low tri¬
angle, the space between the hind pair decidedly greater than that between them
and the nearest eye-margin ; at the side of each hind ocellus is a wide impression,
which extends back some distance; frontal depression deep, the line extending
to the fore ocellus strongly marked; first joint of flagellum about one-third
longer than the second, and is also much longer than the pedicellum, which is a
ittle longer than the second joint of flagellum ; the cheeks are cut off obliquely
beneath ; pronotum sharply angulate at the sides, with a strong impression in the
middle; thorax coarsely punctured, but more closely so than the head; middle
NORTH AMERICAN HYMENOPTERA.
199
segment at base with an enclosure which is strongly depressed or excavated, with
its surface rugose, and is pointed posteriorly in the middle, and is apparently con¬
nected with a deep, elongate-ovate fovea on posterior face, which is indistinctly
ridged laterally, and above the fovea is strongly and longitudinally striated ; legs
slenderer than in any of the following species, the femora thickened basally as
usual and not medially as in pedicellatus, rvfigaster and Occident the £ has the clypeus and mandibles yellowish; basal joint of
medial tarsi not laminate within. Length 4.5 mm.
Illinois (Packard); Philadelphia, Pennsylvania (in August);
District of Columbia (Ashmead). Easily distinguished by color of
legs and abdomen, the absence of enclosure at base of middle seg¬
ment, and by the peculiar £ antennae.
NORTH AMERICAN HYMENOPTERA.
203
Unidentified Species .*
93. Crabro (ri^idus Sm.
Crabro frigidus Smith, Cat. Hym. Brit. Mus. iv, 419, 9 ■
“ Female. Length 51 lines. — Black : the head finely punctured, the cheeks
sparingly so, smooth and shining; the ocelli in a curve on the vertex: the scape
and mandibles yellow, the base and apex of the latter black. Thorax : the meso-
t borax longitudinally striated ; the scutellum shining, punctured at the base, and
longitudinally striated beyond ; the metathorax with a subdefined half-circular
space at its base, which is coarsely striated obliquely ; posteriorly it is very coarsely
and deeply rugulose ; a spot on each side of the collar and the tubercles yellow,
the anterior lateral angles of the collar subdentate ; the knees, tibiae and tarsi
yellow, the apical joints of the latter fuscous, the extreme apex of the tibiae with
a ferruginous stain ; the wings fusco-hyaline. Abdomen smooth and shining, the
first segment very delicately punctured, the following segments more distinctly
so ; the second and three following segments with an ovate, pale yellow macula
on each side at their basal margin ; the apical segment produced into an obtuse
spine, which has a sharp, raised margin, and is covered sparingly with oblong
punctures.
“ Hab. — North America.”
May belong to group singularis.
94. Crabro llarrisii Pack.
Crabro pusillus Harris (ncc H.-S.), Cat. Ins. Mass. p. 68 (teste Packard). No
description. •
Blepharipus llarrisii Packard, Proc. Ent. Soc. Phila., vi, 376, .
“ 'k . Head as described in B. impressifrons, the impressed line in front of the
ocelli being present, the front narrow, depressed ; ocelli in an equilateral triangle,
but the head is shorter and more transverse. Orbits and clypeal region silvery,
the latter narrower than in the preceding species [scutellatus = ^ of impress u-
frons ], proportionately longer and more strongly carinated than in B. impressi-
frons. Mandibles slender, bideutate, tip deeply grooved beneath the teeth, black
tip rufo-testaceous. Joints of palpi slender, cylindrical, testaceous. Scape of
antennae long and slender, c.lavate, angular, dark brown above, beneath obscurely
yellow, basal joint of the flagellum brown, not black, filiform, slender, and longer
than in B. impressifrons. Prothorax narrower than in />’. impressifrons, with a
yellow stripe slightly interrupted by a mesial notch. Mesothorax quite smooth,
polished, slightly and sparsely punctured, with long hairs arising from them, en¬
tirely black. Propodeum with a distinct semi-ovate enclosure, with fine striae
diverging from the mesial furrow, which is narrow but distinct ; towards the
flanks the striae become transverse. Wings immaculate, clear, iridescent, costal
nervure dark rufous, posterior nervures testaceous, pterostigma dark. Fore femora
reddish yellow, stained with brown externally : middle femora dark brown, yel¬
low beneath and at tips : hind femora entirely brown ; tibiae yellow, posterior
pair tipped with brown ; two anterior pairs of tarsi yellow, posterior ones dark.
Abdomen cylindrical, very much rounded above, beneath convex, nearly equal¬
ing the head and thorax together in length, longer, narrower and slenderer than
in II. impressifrons, brown-black, edges of the abdominal segments obscurely pale,
* These are not included in the synoptical tables.
TRANS. AM. ENT. SOC. XXII.
JUNE, 1895.
204
WILLIAM J. FOX.
more so than in the species above mentioned. Length of body, .26 ; head and
thorax together, .13 ; abdomen, 13 inch.
“ Differs from the species with which it has been compared in the
description given above, in its shorter more transverse head and
slenderer body, in its fore femora being entirely yellow above; in
the sculpturing of the propodeum, where in B. impressifrons it is
entirely smooth. The hind tibise are much smoother, scarcely spinu-
lated. It will also be readily distinguished by the want of the pale
testaceous posterior margin of the abdominal segments.
“Cambridge, Mass. (coll. Harris). ‘June and August 15, on
flowers.’ Harr. MS.”
95. Crabro macula! iin Fabr.
Crabro maculatus Fabricius, Ent. Syst. ii, p. 293.
“C. thorace maculate, abdomine atro: nmeulis utrinque quatuor flavis, tihiis
flavis.
“ Habitat in America boreali Mus. Dom. Banks.
“Medius. Antennae nigra? prime articulo flavo. Caput nigrum labio argeuteo.
Thorax niger striga antica, puncto sub alis scutelloque flavis. Abdomen atrum,
nitidum maculis utrique quatuor transversis, flavis. Femora nigra. Tibiae flavse.”
96. Crabro oblongus Pack.
Crabro oblongus Packard. 1. c., p. 88. 9 •
“ 9 • Closely allied to C. singularis, head of much the same proportions, but
narrows a little behind and is throughout narrower as the entire body is. Eyes
a little nearer together; the convexity of the vertex and the grooving of the
front the same as in C. singularis. Antennal groove well marked, polished, on
each side a narrow edging of silken pubescence ; clypeus golden as in C. singularis,
but the hairs are much finer, the lateral lobes are more triangular and silvery ;
mandibles black, with the middle wedge-shaped area twice grooved towards the
base, where in C. singularis it is smooth; palpi slender, joints much longer and
slenderer by one-third than in the other species above named. Antennae as in C.
singularis, scape entirely yellow, hardly as stout, joints of flagellum a little stouter.
Two square, yellow spots on the prothorax ; lateral tubercle yellow; mesothorax
entirely black above with no yellow markings ; surface of the scutum finely
striated ; scutellum and meta-scute Hum highly polished. Propodeum much as in
C. singularis, hut the mesial furrow widens at the base, with similar lateral and
transverse rugae; legs colored much the same; within the hind tibiae a dark
stripe. Abdomen long, sides unusually parallel, giving it an oblong slope [shape ?] ;
with ten yellow fasciae, those on the basal joint being simply dots, those on the
second ring much larger than the succeeding ones, not. wedge shaped, hut ellip¬
tical ; beneath very convex ; tip one-half as long as in C. singularis, the enclosed
triangular upper surface much longer and narrower than in the allied species.
Length of body, 64; head and thorax, .33; abdomen, .31 inch.
“Conn. (Norton). •
“ Differs from C. singularis in its much narrower and slender body,
NORTH AMERICAN HYMENOPTERA.
205
narrower head, larger palpi, with the mandibles grooved towards in¬
sertion in the middle area ; in the wholly black meso-thorax, except
the yellow tubercle, and in the abdomen having an additional pair
of fascia!. The tip of the abdomen is scarcely one-half as large, of
different proportions, being longer and narrower than in C. singularis,
while the abdomen is much flattened above, where in C. singularis
it is much more convex.”
97. Crabro septeiitrionalis Pack.
Crabro septentrional? s Packard, 1. c., p. 110, 9 .
“ 9 • Head short, broad, transversely oblong, being one-half as long as broad,
body long and flattened, finely punctured, vertex flattened, slightly depressed ;
ocelli arranged in a low triangle, which is nearly equilateral ; eyes wide apart as
usual; surface concave in front of the ocelli ; antennal groove well marked; or¬
bits on each sid? lined with a broad track of golden pubescence like the clypeal
region ; clypeus as long as broad, acutely produced on the front edge, but trun¬
cate at tip, strongly carinated, black ; mandibles as usual bidentate, yellow, black
at tip. An ten me of the usual proportion, scape a little compressed and angulated
longitudinally, slightly dilated in the middle, entirely yellow: flagellum black,
basal joint yellowish beneath, abdomen ferruginous. Prothorax with two nar¬
row, yellow stripes, rather remote, one on each side. Thorax broad, somewhat
flattened above; on mesoscutum are two distinct submesial ridges and parapsidal
grooves ; surface finely and closely punctured ; a slight yellow spot, sometimes
absent, on the middle of the meta-scutellum. Tubercle on the flanks as usual.
Enclosure on propodeum distinctly marked, semi-elliptical, mesial furrow with
slightly ridged sides, on each side diverging ruga: of unequal length, posteriorly
the lines more transverse and finer, with a few scattered gray hairs. Tegulse
ferruginous, nervnres dull ferruginous. Fore femora hlaek, tibiae yellow, ferru¬
ginous within, tarsi yellow, shaded on the sides with pale ferruginous, middle
femora black, yellow at tip beneath, tibise yellow, with a large oval black spot
within, hind pair tuberculated and unusually spinulated ; tarsi yellowish, ungues
ferruginous; hind femora black, lined within with a silvery pubescence forming
a regular line of long, silvery, evenly-cut hairs; basal joint of tarsi yellow, fer¬
ruginous at tip, remaining joints wholly reddish. Abdomen broad and flattened,
convex beneath, a little longer than the head and thorax together, with five pairs
of fasciae, those on basal segment reduced to single square dots; those on second
segment are broader than the others, third pair longer, narrower and nearly con¬
tiguous on the mesial line of the body; those on the fifth rings unite to form a
continuous band, more ovate and broader than the others. Beneath black, edges
of segments obscurely testaceous. Length of body, .54 ; head and thorax together,
.26; abdomen, .28 inch.
“ Hudson Bay Territory (coll. Norton) ; Maine, Brunswick, and
head waters of Penobscot (Packard).”
This evidently belongs to group nigrifrons, and is not unlikely
identical with that species.
TRANS. AM. ENT. SOC. XXII.
JUNE. 1895.
WILLIAM J. FOX.
206
98. Crabro iinicus Patt.
Blepharipus unicus Patton. Can. Entom. xi, p. 214, 9 •
“ 9 • Length 5 mm. Black, tips of the mandibles, tegulse, spurs of posterior
tibite and extreme base of the first joint of posterior tarsi, the last joint of poste¬
rior tarsi, the tips of all the cox® and trochanters and the tips of the posterior
femora and tibiae, fuscous. Scape beneath, dot on first joint of flagellum, the
tubercles, the four anterior tibise, excepting a black spot beneath, and the tips of
the four anterior femora, yellow. The four anterior tarsi, excepting the fulvous
apical joint, and the base of the posterior tibiae, whitish. Clypeus black, covered
with a silvery pile ; flagellum fulvous beneath. Thorax beneath and the abdomen
with short scattered pubescence. The abdomen excepting the rufo-piceous en¬
closure on the sixth segment entirely black. Wings hyaline, beautifully irides¬
cent, the nervures and stigma black. Head, thorax and abdomen smooth. The
head as wide as the thorax, and the vertex longer than wide, the front narrow.
The ocelli arranged in an equilateral triangle, each in a separate depression ; from
the anterior ocellus an impressed line extends downwards upon the face and
another extends backwards on the vertex ; on the inner orbit on the vertex is a
slight groove curving at the end to come in a line with a short oblique groove
behind each posterior ocellus. Prothorax sharply angulated beneath, mesopleune
sharply angulated beneath near the coxae. Anterior portion of the mesonotum
with four short lines which extend upon the collar as slight notches; mesonotum
with a slight groove on each side of the disk and with a marginal row of reticula¬
tions over the tegulse. Scutellum quadrate, connected with the mesonotum by
the broad lateral angles between which it is separated by a basal row of large
reticulations. The semi-circular area on base of metathorax is encircled by a row
of similar reticulations and divided by a deep median groove. Similar rows of
reticulations extend in a slightly curved line down upon the mesopleura from the
anterior wings and others mark the lateral sutures of the metathorax. The sides
of the mesothorax beneath and the sides and posterior face of the metathorax
are finely striate; these s trite curve upon the metathorax above, and are repre¬
sented within the enclosure by strife of microscopic fineness. The posterior face
of the metathorax has a deep triangular median depression above, and is more
coarsely rugose beneath. Area on the sixth segment of abdomen not punctured,
depressed medially, the sides much thickened and raised. Abdomen shorter than
the rest of the body, narrow at base, broad near the tip. The posterior tibiae
much thickened.
“New Haven, Conn., July 15th.
“ The elongate head and clavate abdomen give this species a very
pecu liar appearance. ’ ’
Belongs evidently to either group a ter or insolens, or near by.
99. Crabro nigt*r Prov.
Crabro niger Provancher. Add. Hym. Quebec, p. 419, 9 •
“ 9 • Length .26 inch. Black in all its parts, without a spot, polished, shining.
Head transverse, not narrowed behind the eyes. Thorax finely punctured, the
metathorax strongly rugose, with irregular strife basally. Wings hyaline, ner¬
vures brown, stigma black. Teguke pitchy-black. Legs not maculated. Abdo¬
men subpedunculate, polished, shining, smooth, its apical projection [pygidium]
channeled. Ottawa (Guignard).”
Belongs very likely to group ater.
NORTH AMERICAN IIYMENOPTERA.
207
100. C'rabi'A col iiiiibisiims Kohl.
Crabro ( Lindenius ) columbianus Kohl, Ann. k. k. Naturh. Hofm. Wien, vii,
203.
“ Black, head a little bronzed. Mandibles, scape of antenna;, interrupted line
on collar, humeral tubercle, spot on tubercles and greater part of legs, yellow.
Punctuation of head and thorax much denser than in Cr. pygmxus R., and Or.
algira and frontal line deeper. Foveolated suture of episternum mesopleuralis
feebler than in Or. pygmxus. Cordiform area of middle segment large, shining,
divided into two parts by a longitudinally narrow median line, crenate at base,
on sides and posteriorly not divided by a crenulated fossa. Length 5 mm. 5? •”
“To ray knowledge no Crabro of the group Lindenius has been
described from the nearctic region ; neither could I refer none from
the described black bodied species of Crabro to the group Lindenius,
so it almost seemed, as thoitgh this group were not represented in
America. At the present time, however, a female specimen of a
species from British Columbia (Revelstoke) lies before me. It re¬
sembles very much a small specimen of L. pygmceus from the Med¬
iterranean region in respect to size and coloration, and indeed that
variation, in which, besides the yellow humeral tubercles, there is
also a narrow interrupted band on the collar in the middle, and a
spot upon the scutellum of the same color. The color of the legs is
as in pygmceus, namely the tips of the knees citron-yellow, the entire
anterior part of the fore and middle tibiae, the basal half of hind
tibiae and the metatarsus of all pairs. The remaining tarsal joints
brown. Flagellum beneath rust-color. The black of the head
shows that brassy lustre of the IAndenius group, but only to a slight
degree. From pygmceus , columbianus is distinguished principally by
the deeper frontal line, by the much closer, though fully as tine,
punctuation of the head and thorax— in pygmceus these parts are
somewhat sparsely, punctured — further by the more subtile fovea of
the episternal furrow of the mesopleune. The cordiform area is
large and smooth, parted longitudinally by a fine medial line, on the
base furnished with longitudinal wrinkles, which, contiguous to the
postscutellum, show a transverse series of irregular fovea. From
the posterior part of middle segment and from its sides — at all events
in distinction from pygmceus — the boundary of the cordiform area is
not very sharply defined, about as in Cr. ( L .) cegira Kohl. Pygidium
punctured, apically rust-red.”
101. Crabro riigosopiinctat us Prov.
Thyreopus rugosopunctatus Provancher, Hym. Quebec, p. 664, 9 .
Crabro rugosopunctatus Kohl, Zool. .Takrb., Abth. f. Syst. iii.
“ 9 • — Length .30 inch. Black, strongly punctured ; the tubercles yellow,
TKANS. AM. ENT. SOC. XXII.
JUNE. 1895.
208
WILLIAM J. FOX.
ocellated by a black spot, a line on the postscutellum, the tibiae beneath, with five
pairs of spots on the abdomen, yellow. The clypens entirely black with silvery
pubescence, the mandibles and the prothorax without spots. The mesothorax
with deep punctures, but little dense, the metathorax strongly rugose, alveolate.
Wings tolerably enfumed hyaline at the base, their tegulse brownish red. Legs
black, the tibite yellow beneath, the tarsi brownish ferruginous. Abdomen ovate,
strongly punctured, contracted at the sutures, the five basal segments with a yel¬
low spot on each side near the base, these spots broad, truncate (coupees earrees)
at the sides of the abdomen, pointed internally, but all strongly separated, not
approaching on the back ; the fifth segment has also two yellow spots in the mid¬
dle between the two spots. Anal plate short, tolerably convex, with large punc¬
tures. its borders carinated.
“ We received this new species from Mr. Brodie, who sent it from
Toronto ; it is very distinct from all the others by its form and
punctuation.”
This cannot belong to groups tenuiglossus or largior (= Thy-
reopus ) as it is too coarsely sculptured.
102. Crabro elongatus Prov.
Thyreopus elongatus Provancher, Add. Hym. Quebec, p. 293, 'J, .
“ . — Length .45 inch. Black, opaque, finely punctured. Head transversely
quadrate, very short behind the eyes and abruptly narrowed with whitish hair on
the vertex ; the clypeus, mandibles except apex, the scape of the antennae, white
or pale yellow. $cape of antennae strongly dilated at apex, white with a black
band above, sinuated interiorly almost to the apex, the flagellum entirely black,
fusiform, the joint short to the middle, broad, flattened beneath, diminishing
gradually toward the apex. Thorax not maculated; metathorax rugose, with
irregular striae. Wings slightly and uniformly obscured. Anterior legs with the
trochanters white, black at the base and having a spine at apex, the femora di¬
lated, white, black at apex, the tibiae white in front, armed with a large leaf-like
appendage in the form of a shield, the posterior border sinuated and terminating
in a sharp point black at the base, whitish toward the apex with three longitu¬
dinal brown bands, the base of outer side has three transverse, fine, white lines.
Four posterior legs pale yellow, their femora with a black line above and beneath ;
the posteriors with their tarsi yellow, brownish at apex. Abdomen elongate,
polished, brilliant, black with a pale yellow band on each segment, on the basal
segment this band is interrupted and sinuated on each side, broader on the second
and interrupted the same as on the third ; the terminal segment rounded, with a
long, white spine on each side and another one between them ; the band on the
second segment is Inclined forward on the sides, and there is placed in the angle
at apex a small triangular spot quite near the margin ; the third segment has
beneath a spot at each side of its apex. — Cap Rouge.
“ Female still unknown. This species is easily recognized by its
coloration.”
Evidently closely related to C. pallidas mihi.
NORTH AMERICAN HYMENOPTERA.
209
103. C’rafor© signifer Pack.
Thy reopus signifer Packard, Proc. Ent. Soc. Phila. vi, p. 361, $> 9 .
Crilbro signifer Kohl, 1. c. p. 585.
“ % . Head more cuboidal than in T. cribrellifer, being longer and not narrow¬
ing so rapidly behind; the front less deeply excavated, eyes of same size, ocelli
arranged in a similar low triangle: in front of them a transverse line of hairs
extending towards the insertion of the antennae. Clypeus as in T. latipes , a lateral
line of silvery hairs along the front edge of the eyes as usual. Antennae simple,
joints cylindrical, long and slender, sutures well marked, second joint a third
longer than the first or third; joints showing a slight tendency to become flat¬
tened beneath ; black scape yellow, black at base on upper side: mandibles black,
a little yellowish at base. Prothorax above reddish yellow, interrupted in mid¬
dle: thorax much as in T. cribrellifer; a reddish yellow stripe on scu tell uin ; hind
edge of yellow tubercle very convex. Fore coxae, femora and trochanters black,
tibiae expanded into a broad concavo-convex, shield-like plate, as long as broad,
subpentagonal, the angles much rounded, and the end obtuse, being angulated
near the middle of the posterior edge, and near the base of the anterior edge ;
tibiae yellow, but the plate dark, with light lines radiating from the middle of
tibiae, with other independent lines. Tarsi large, well developed, fuscous ; middle
and hind femora black ; tibiae yellow, with an external dark mark, tarsi hiscous.
Abdomen smooth and shining as usual, yellow fasciae as in T. cribrellifer, but they
are broader and heavier, not indented, the stripes being continuous across the
abdomen on the fourth and fifth rings; edge of sixth ring obscurely yellow, tip
spat u late, a little hirsute. Length of body, .42; head and thorax. .20; abdomen,
.22 inch.
“ Brunswick, Maine. August, on flowers of Spircea alba.
“ Easily known by its short, dark, shield-shaped plate or vexhil-
hun, which is as broad as long, and the presence of a yellow band
dn the meso-scutellum ; its simple, non-expanded antennae, the fus¬
cous yellow spot on the thorax, and entire noil-indented abdominal
fasciae. It is of the same size as T. cribrellifer, but a little shorter.
“ 9 . A female specimen received from Mr. Sanborn diffeis fiom
the other sex by its shorter head, more deeply excavated front, and
more convex vertex ; the clypeus is longer, scape of antennal more
thickened, otherwise the color is the same. The thorax is sculptured
and spotted the same, but the enclosure of the propodeum is more
deeply furrowed and rugose on each side of the mesial furrow, i ore
and middle legs colored as in S. pegasus , internal ring and two re¬
mote fascia: one-lialf narrower than in T. pegasus, where they form
a broad, scarcely interrupted band ; terminal band narrower, tip of
abdomen a little broader. This 9 will probably be eventually found
to be the 9 signifer, differing likewise from T. pegasus 9 in its
brighter yellow spots and different arrangement of the abdominal
fascise.
“ Mass. (Sanborn).”
Belongs, no doubt, to group tenuiglossus.
TRANS. AM. ENT. SOC. XXII.
(27)
JUNE, 1895.
210
WILLIAM J. FOX.
SYNOPSIS OF THE SPECIES *
FEMA LES.
Epimerum mesopleuralis armed with a distinct crest or ridge before the middle
coxse, striated, punctato-striate, or striato-punctate . 2.
Epimerum mesopleuralis not crested or ridged, at most with a small, pointed
projection before the middle coxa;, punctured, rarely striated . 33.
2. — Anterior margin of clypeus produced into a strong, truncated process in the
middle . . ....... . 3.
Anterior margin of the clypeus not strongly produced in the middle, usually
rounded . 14.
3. — Head and thorax very coarsely sculptured, being covered with large punc¬
tures. the dorsulum, scutellum and mesopleune frequently with strong
striations interspersed with punctures . 4
Head and thorax not very coarsely sculptured, the head rather finely and
closely punctured ; mesopleurse striated . 7
4. — Pronotum very large, strongly crested, and with the lateral tooth large and
strong; a broad band on dorsal abdominal segments 1-5 and ventral
segments 2-6 more or less, and greater part of femora, yellow.
cinctellus.
Pronotum not remarkably large, its crest, however, sharp, the lateral tooth
small; at the most, the fourth and fifth dorsal abdominal segments
banded, the ventrals never maculated ; greater part of femora black
rarely otherwise . . 5.
5. — Abdomen with strong, distinctly separated punctures; middle segment on
the sides strongly striated . . . ' . 6.
Abdomen finely and closely punctured, shining; middle segment on sides
not strongly striated, smooth medially (none of the abdominal spots
united into bands) . . . . producticollis.
6. — Punctures of the head extremely large, deep and well separated, those on
the abdomen also coarse but less so than on the head ; spots on dorsal
abdominal segments 4 and 5 always separated • . . i nterr uptus .
Punctures of the head strong, but much less than in interrupt ns, and closer,
especially between the ocelli and occiput ; punctures of the abdomen
somewhat finer than those of the head ; dorsal abdominal segments 4
and 5 with the spots united into hands . hellus.
7. — Ocelli forming a low triangle, tending to a curved line ; pronotum distinctly
dentate laterally ; first joint of flagellum distinctly shorter than the
following three combined . 8.
Ocelli forming an equilateral triangle; pronotum rounded at the sides, not
dentate: first joint of flagellum as long, or nearly so, as the combiued
length of the following three joints . 12
8. — Space between the eyes at base of clypeus at least equal to the length of
joints 1 and 2 of flagellum united; transverse impressions of pronotum
narrow, not strong . 9.
Space between the eyes at base of clypeus not equal to the length of joints
1 and 2 of flagellum united ; pronotal impressions broad, especially to¬
ward the sides . 11.
* The species, which the author has been unable to identify, are not included
in this table.
NORTH AMERICAN HYMENOPTERA.
211
9. _ Pronotum sharply margined anteriorly, the lateral tooth large and sharp ;
longitudinal furrow of middle segment not broad, or widened medially
(markings usually whitish ; all the abdominal spots separated ; scape
and mandibles more or less whitish yellow) . . - • moiltamiS.
Pronotum obtusely or not at all margined, the lateral tooth rather small and
blunt; longitudinal central furrow of middle segment broad and dis¬
tinctly widened in the middle . . . . • ■ 1^*
10. _ Pronotum not margined ; posterior face of middle segment not ridged above ;
scape entirely black ; markings on fifth segment united, those on fourth
nearly so . . . . at riceps.
Pronotum distinctly, though not strongly margined ; posterior face of middle
segment bounded above by a distinct ridge; scape in part yellow; mark¬
ings on the abdomen all separated . brunneipes.
11. — Seutellum with sparse punctures on anterior portion, striated posteriorly;
middle segment above generally with tolerably fine striations , thoiax
except the tubercles, rarely maculated ; femora entirely and inner por¬
tion of tibise, black • • • . • • • parvnliis.
Seutellum finely striated throughout; middle segment above with coarse
folds or rugae ; pro- and metanotum always maculated ; femora at tips
and greater part of tibiae, yellow . corrugatus.
12. — First joint of flagellum fully as long as the three following united ; posterior
face of middle segment with feebly developed lateral ridges . 13.
First joint of flagellum scarcely as long as the three following united ; pos¬
terior face of middle segment with scarcely a trace of lateral ridges (no
distinct transverse series of foveae on middle segment). • -nigrifrons.
13. — Middle segment with a transverse series of strong foveae separating the upper
surface from the posterior face ; pedicellum more or less yellow. Species
Eastern . . obscurus.
Middle segment without a distinct series of foveae separating the upper sur¬
face from posterior face; pedicellum black. Species Western.
gracilissimus.
14— Dorsulum not striated, either finely or rugosely punctured . 15.
Dorsulum finely striated, transversely so on anterior portion, longitudinally
on remainder . . . ^2.
15. — Pygidium much narrowed apically, depressed or excavated . lti.
Pygidium broad, triangular, flat, not depressed or excavated . 29.
16. — Abdomen dorsally indistinctly punctured, or impunctate; pygidium always
with a lateral fringe of long, thick hairs; head always finely and closely
punctured • • ■ . . . ... . 1 / .
Abdomen dorsally distinctly punctured, usually strongly so, particularly the
first segment- ..... . - • • .
17_Form broad, the first segment of abdomen not narrowed or lengthened, the
abdominal markings long, narrow; pygidium with the apex obtuse or
rounded ; second ventral segment with large, much scattered punctures • 1 8.
Form narrower, the first segment of abdomen narrowed and lengthened,
though not very strongly so, the abdominal markings short, more or less
rounded ; pygidium acutely pointed at apex ; second ventral segment
with strong, separated, though not scattered, punctures.
pa iiciinaculatus.
TRANS. AM. ENT. SOC. XXII.
JUNE, 1895.
212
WILLIAM J. FOX.
18. — Middle segment not marked by fovese between the upper surface and the
posterior face, the latter striato-punctate as above; dorsulum with the
punctures close throughout, those on posterior portion but little or not at
all separated . sexinaculatus.
Middle segment with the upper surface and posterior face separated by a
series of strong fovese, the posterior face transversely rugose; dorsulum
with the punctures on posterior portion distinctly separated.
trifosciatus.
19. — Pygidium without the lateral fringe of stiff hairs, or it is but feebly repre¬
sented ; head with strong, sometimes large, separated punctures, except
in one case . . . 20.
Pygidium with the lateral fringe always present and distinct; head with
close, rather fine punctures . . . 25.
20. — Head and first segment of abdomen with strong, separated punctures; pro.
notum with lateral tooth small and indistinct, or absent . 21.
Head rather finely and closely punctured, the punctures of the first ab¬
dominal segment more distinct and separated, but scarcely stronger:
pronotum with a strong, distinct tooth, or rather spine, on each side
(abdominal segments 2-5 with a lateral spot) . spiniferus.
21.— Trochanters, femora and tibiae in part, reddish . 22
Trochanters, femora basally or entirely, black . 23.
22. — Space between the eyes at base of c.lypeus fully equal to the width of the
latter in the middle ; space between hind ocelli somewhat less than that
between them and nearest eye-margin ; no yellow on scutellum or epis-
ternum mesopleuralis (second abdominal segment with a broad band, the
remaining apical segments either narrowly banded, or with the bands
broken into spots, which sometimes are only evident at the sides).
scaber.
Space between the eyes at base of clvpeus somewhat less than the width of
the latter in the middle ; space between hind ocelli about equal to or
slightly greater than that between them and the nearest eye-margin ;
scutellum and episternum mesopleuralis more or less yellow (all the dor¬
sal abdominal segments with a lateral spot, else the second banded and
the spots on remaining segments disappear; first and second segments
usually more or less rufous) . rufipes.
23. — Abdomen with segments 2. 4 and 5 banded with yellow; first segment very
strongly punctured . 24.
Abdomen never banded, with a lateral spot on segments 2, 4 and 5, the third
segment rarely spotted, the second segment still more rarely ; first seg
ment not very strongly punctured . stirpicola.
24. — Wings dark subhyaline, paler basally ; head coarsely punctured, most sparsely
so posteriorly ; femora apically and tibiae entirely, yellow ; tarsi reddish
yellow; third abdominal segment with a small lateral spot, .texanus.
Wings subhyaline, slightly darker apically, with a strong yellow streak
along the costa; head evenly, though strongly punctured, more finely,
and closely so posteriorly ; femora black, except hind pair, which have a
reddish streak within ; tarsi black ; third abdominal segment with a
band . centralis.
NORTH AMERICAN HYMENOPTERA.
213
25 -Dorsulnm with strong punctures, separated on posterior portion ; abdominal
spots nearly always all widely separated, rarely forming bands on last
two segments; middle segment strongly punctured above (femora in part
reddish, trochanters black) . deceinmaculatus.
Dorsulnm closely and rather finely punctured throughout ; abdomen always
more or less banded ; middle segment striated above (femora red in one
case only, in which case the trochanters are also of that color) . -26.
26. — First dorsal segment of abdomen with the punctuation much more distinct
than on the remaining segments . . . . . . . . .
First dorsal segment with the punctuation but little more distinct than on
. . , . 28
the remaining segments .
27. — Ocelli forming a low triangle ; greater part of femora and the tibise in part,
black ; first abdominal segment and the ventrals not spotted : dorsulnm
very compactly punctured . ©dyneroides.
Ocelli forming a curved line; legs red and yellow; abdomen beneath aud
on first dorsal segment spotted ; dorsulum posteriorly with the punctures
less compact...- . . . ; . imfoutus.
28. — Femora black at extreme base only, the tibia? without an internal dark spot ;
abdominal markings large and broad, the ventral segments more or less
maculated . Packarilii.
Femora black except apex, the tibia? with a dark spot within ; abdominal
markings rather slender, the ventral segments not maculated.
clirysarginus.
29. _ Head and thorax not densely hirsute ; abdomen not maculated veutrally.
the first dorsal segment spotted on each side ; pronotum sharply margined
or ridged anteriorly; hind ocelli not placed behind an imaginaiy line
drawn across the vertex from the outer orbit of one eye to the other. 30.
Head and thorax with dense, shaggy hair; ventral segments of abdomen
2-5 almost entirely yellowish, the first dorsal with a transverse band ,
pronotum convex, not margined anteriorly; hind ocelli placed behind
an imaginary line drawn across the vertex from the outer orbit of one
eye to the other . villosus.
30— Head and abdomen rather finely punctured ; dorsulum with the punctures
close and not very coarse . '**■•
Head and abdomen, particularly the first dorsal segment, rather coarsely
punctured ; dorsulum coarsely cribrose (femora more or less reddish).
riififemur.
31 _ Markings yellow; middle segment posteriorly with a yellow spot on each •
side; tibia? not spotted internally; femora above generally with a yellow
stripe reaching almost to the base . bigeniinus.
Markings whitish yellow ; middle segment not spotted ; tibia- with a black
spot within ; basal half of femora usually black . dilectus.
30. _ First joint of flagellum longer than the two following united; marks on
second abdominal segment pointed internally, those on fifth widely
separated . singnlari*.
First joint of flagellum distinctly shorter than the two following united ;
marks on second abdominal segment broadest internally, those on fifth
forming a band . aciculatus.
33. — Abdomen not petiolate, more or less sessile . -jl-
Abdomen petiolate, the petiole more or less nodose at apex . 77.
TRANS. AM. ENT. SOC. XXII.
JUNE, 1895.
214
WILLIAM J. FOX.
34. — Abdomen always spotted and marked . 35.
Abdomen never spotted, entirely black, or red . ... .58.
35. — Pygidium broad, flat, not excavated or depressed. ... . . .36.
Pygidium narrowed apically and excavated . . 55.
36. — First joint of hind tarsi distinctly longer than the longer spur of hind
tibia; . . . . . . . 37.
First joint of hind tarsi of about equal length to the longer spur of hind
tibiae • • • . . 54.
37. —First cubital transverse vein received by the marginal cell before its middle,
the space between the recurrent nervure and the apex of the submar¬
ginal cell much greater than the width of the latter cell at apex . 38.
First cubital transverse vein received in about the middle of the marginal
cell, the space between the recurrent nervure and apex of submarginal
cell not or rarely greater than the width of the latter cell at apex - . . -41.
38. — First joint of flagellum distinctly shorter than the second ; space between
hind ocelli somewhat less than that between them and the nearest eye-
margin ; pygidium longitudinally rugose . . .39.
First joint of flagellum distinctly louger than the second ; space between
hind ocelli slightly greater than that between them and the nearest
eye-margin; pygidium coarsely punctured . 40.
39. — Pronotum with lateral tooth small and weak ; pronotum entirely, scutellum
and metanotum in part, yellow ; second and third ventral abdominal
segments spotted with yellow . cingulatus.
Pronotum with lateral tooth strong; pronotum with two, sinuous yellow
spots only ; no yellow on scutellum, metanotum, or abdomen ventrally.
argus.
40. — Space between eyes at base of clypeus not as great as the width of the latter
in the middle; dorsulum finely and closely punctured, shining.
a^qiialis.
Space between eyes at base of clypeus fully as great as the width of the
latter in the middle; dorsulum rather strongly and closely punctured,
subopaque ...... . ... iliscretus.
41. — Flagellum of an ten rife (excluding the pedicellum) scarcely twice the length
of the scape, about equal to the space between the eyes on an imaginary
line drawn across the vertex before the hind ocelli . 42.
Flagellum (excluding pedicellum) more than twice longer than scape, greater
in length than the space between the eyes on an imaginary line drawn
across the vertex before the hind ocelli . 45.
42. — Head, thorax and base of abdomen with very long, shaggy, pale yellowish
pubescence ; middle segment coriaceous, strongly furrowed, above in the
middle, apparently striated, though subtilely ; punctuation of head
feeble, the dorsulum with shallow, scattered punctures (first dorsal seg¬
ment maculated with yellow). • ■ . I liy roopliorus.
Head, thorax and base of abdomen nude, except the usual silvery pubes¬
cence on clypeus, thorax beneath, etc. ; middle segment above coarsely
sculptured ; sculpture of head and dorsulum distinct (first dorsal ab¬
dominal segment rarely maculated with yellow) . . 43.
43. — Wings except extreme apex, subhyaline ; punctuation of mesopleurse feebler
and sparser than in incertus ; scutellum rarely maculated with yellow. 44.
Wings on apical half subfuscous; mesopleune with large, separated, though
NORTH AMERICAN HYMENOPTERA.
215
not sparse punctures; scu tell u m and metanotum maculated with yellow ;
segments 2-5, sometimes the first with a large yellow spot on each side,
those on the fifth connected ; all the tarsi yellowish testaceous.
incertus.
44. — Space between the eyes beneath at the base of clypeus about equal to the
length of the pedicellum and first joint of flagellum united, at any rate
not less; mesopleurse, in addition to the punctuation, with a delicate
striation. sometimes scarcely evident (hind tarsi blackish).
teimiglossiis.
Space between the eyes beneath at the base of clypeus somewhat less than
the length of the pedicellum and first joint of flagellum united; meso¬
pleurse not striated (hind tarsi yellowish testaceous) . f iiinidtis.
45. — Sculpture of head and thorax subtile, rather indistinct, apparently with
shallow punctures (middle segment above with longitudinal ridges, less
distinct than usual ; markings whitish ; clypeus and scape, except apex,
black ; head and thorax clothed with thin, pale, long pubescence).
vernalis.
Sculpture of head and thorax, particularly that of the dorsulum, well
marked . 46.
46. — Middle segment above very coarsely sculptured ; with strong, longitudinal
or somewhat oblique ridges, which extend to base of posterior face* • -47.
Middle segment above not so coarsely sculptured ; if it is, then the ridges
become obsolete toward the posterior face (in one case with close, rather
fine longitudinal strise) . 50
47. — Scape entirely black except a narrow ring at apex (space between hind ocelli
slightly less than that between them and nearest eye-margin ; spot on
scutellum : spots on first abdominal segment separated . I’rovaiirlieri .
Scape yellow, at least anteriorly . 48.
48. — Dorsulum rather finely punctured; middle segment above with the furrow
broad, shallow, and usually with a short longitudinal ridge anteriorly in
the middle; pronotum not distinctly dentate, laterally yellow (markings
yellowish white; scape black posteriorly; hind tibise whitish at base
only ; size small) . tenuis.
Dorsulum strongly punctured ; middle segment above with the furrow deep ;
pronotum distinctly dentate laterally . 49.
49. — Space between hind ocelli about equal to or a little greater than that be
tween them and the nearest eye-margin (first abdominal segment with
two separate spots, the marks on second segment pointed internally; tips
of femora not yellow) . ad veil US.
Space between hind ocelli less than that between them and the nearest eye-
margin (first abdominal segment with a broad transverse band, the marks
on the second segment truncate within ; tips of all the femora more or
less yellow) . conspicuus.
50. — Middle segment above with a somewhat triangular depression; fovese of the
episternal suture of mesopleurse less strongly marked than usual ; mark¬
ings white (dorsulum rather sparsely punctured ; space between hind
ocelli about equal to that between them and the nearest eye-margin ;
scutellum and metanotum whitish ; first abdominal segment with a band,
spots on segments 2 and 3 almost touching within, those on segments 4
and 5 uniting within as usual ; ventral segments 2-4 with whitish macn-
lations) . pa I lid iis.
TRANS. AM. ENT. SOC. XXII. JUNE, 1895.
216
WILLIAM J. FOX.
Middle segment above without a triangular depression, at the most with a
transverse series of fovese at the base ; fovese of the episternal suture of
mesopleurse about as usual ; markings yellow (no spot on metanotum) .51.
51. — Space, between hind ocelli decidedly less than that between them and the
nearest eye-margin ; middle segment with a well marked, triangular
enclosure, which is longitudinally and closely striated ; mesopleurse above
in addition to the punctuation, distinctly striated : dorsulum very com¬
pactly punctured (first abdominal segment with a band ; extreme tips of
femora yellow) . pleiiralis.
Space between hind ocelli not much less than that between them and the
nearest eye-margin: middle segment without a well-marked enclosure,
the furrows forming it obsolete basally; mesopleurse (episternum ex¬
cepted) not striated ; dorsulum with the punctures more or less sepa¬
rated . . . . 52.
52. — Clypeus and mandibles black; femora not yellow at tips ; lateral markings
dn dorsal abdominal segments 3 and 4 slender, more or less sinuous ;
second ventral segment only maculated ; hind tarsi except first joint,
blackish (middle segment above with some coarse longitudinal ridges,
which do not reach the base of the posterior face) . monticolus.
Clypeus and mandibles more or less yellow, rarely black ; lateral markings
on dorsal abdominal segments 3 and 4 broad, not at all sinuous ; second
and third ventral segments maculated, hind tarsi yellow testaceous. .53.
53. — Thorax with thick, matted pubescence of a pale fuscous color. Length 14
mm. or over . . . Isn-Sior
Thorax with thin, pale grayish pubescence. Length 10 mm. or less.
viciuus.
54. — Middle segment above with the central, longitudinal furrow wide, shallow
and much broadened basally, the furrow which margins the lateral
ridges of posterior face outwardly not or indistinctly foveolate; epister¬
num mesopleuralis entirely black . cognatus.
Middle segment above with the central, longitudinal furrow narrower, deep,
scarcely broadened basally, the furrow which margins the lateral ridges
of posterior face outwardly, distinctly foveolate or marked by strong,
transverse ridges; episternum mesopleuralis more or less yellow.
liiluris.
55. — Lateral ridges of posterior face of middle segment not strongly developed,
generally obsolete above the middle . • • • -56.
Lateral ridges of posterior face of middle segment very strongly developed,
not obsolete above, usually reaching the furrow which forms the enclo¬
sure on upper surface . . • • nmciilipauiiis.
56 — Viewed from the side the lateral angles of the head are seen to be prominent
and more angular than usual (mandibles, a transverse band on dorsal
abdominal segments 1-5, and ventral segments 2-5, yellow) . ventralis.
Viewed from the side the lateral angles of the head are not more prominent
than usual, rounded (mandibles black, dorsal abdominal segments 2-4
with a large yellow spot on each side, the fifth sometimes with a con¬
tinuous band, ventrals entirely black) . 57.
57 — Head and thorax shining, the punctures tolerably fine, though not close ; the
furrow which margins the lateral ridges of posterior face of middle seg¬
ment outwardly, rather strongly foveolate (episternum of the mesopleurse
and two spots on upper surface of middle segment, yellow).
nitidiveutris.
NORTH AMERICAN HYMENOPTERA.
217
Head and thorax subopaque, the punctures fine and very close ; furrow which
margins the lateral ridges of posterior face of middle segment outwardly
not foveolate (no yellow on episternum mesopleuralis or middle segment).
confertus.
58. — Pygidium broad, flat, not excavated . . 59.
Pygidium narrowed apieally and excavated . 71.
59. — Recurrent nervure received by the submarginal cell in the middle, or about
the middle . (50.
Recurrent nervure received by the submarginal cell between middle and
apex (ocelli forming a low triangle) ; head and thorax with long, dark
shaggy hair; entirely deep black . hispid us.
60. — Ocelli forming a curved line; mandibles simple at apex . 61.
Ocelli forming an equilateral triangle; mandibles dentate at apex . 64.
61. — The two convexities of the enclosure of middle segment smooth, polished
(hind tibiae yellow at base only ; clypeus black) . errans.
The two convexities of the enclosure of middle segment distinctly and ob¬
liquely striated, subopaque . 62.
62. — Hind tibiae yellow at base only: space between the eyes beneath, at their
nearest point of convergence, about equal to a little more than half the
length of the scape; form robust; bead large . piiiguis.
Hind tibiae, except a dark blotch within, yellow ; space between eyes beneath,
at their nearest point of convergence, decidedly greater than half the
length of scape ; form and head as usual in species of this section - • • -63.
63. — Space between the eyes beneath, at their nearest point of convergence, about
equal to two-thirds the length of the scape ; clypeus and scape entirely
yellow . . * - - - - llavicly p«Mis.
Space between eyes beneath, at their nearest point of convergence, equal to
about five-sixths the length of the scape ; clypeus black, the scape yellow
in front only . lat i Irons.
64. — An ten me entirely and four anterior legs, fulvous ; apical margins of abdom¬
inal segments broadly testaceous . si mi I is.
Antenna: in greater part black, as is likewise the greater part of the four
anterior legs . . 65.
65. — Mandibles yellow in greater part . 69.
Mandibles not yellow, black, reddish apieally . 66.
66. — Scutellum almost entirely yellow (rarely black), as is likewise the outer side
of medial tibia: ; yellow on pronotum forming a continuous band- - - -67.
Scutellum black, or with a minute spot; the medial tibiae yellow on basal
portion only ; yellow on pronotum broken into two, widely-separated
spots . 68.
67. — Abdomen somewhat longer than head and thorax united, the first segment
not broad and narrowed basally ; episternal furrow of mesopleurse form¬
ing an angle at about its middle. Length 6 mm . sciitellatus.
Abdomen a little shorter than head and thorax united, the first segment
broad ; episternal furrow of meso pleura: gently curved. Length 4.5-5 mm.
leiitus.
68. — Basal excavated portion of middle segment including at least half of the
enclosed area, with fine longitudinal ridges or striatious ; first .joint of
hind and medial tarsi yellow . incaviis.
TRANS. AM. ENT. SOC. XXII. (28) JUNE, 1895.
218
WILLIAM J. FOX.
Basal excavated portion of middle segment not including half of the en¬
closed area and forms little more than a deep, foveolated furrow; tarsi
not at all yellow . siilcu*.
69. — Scutellum immaculate . .70.
Scutellum maculated with yellow; episternal furrow of mesopleurse sinuous
(clypeus spotted with yellow) . maciiliclypeus.
70. — Episternal furrow of mesopleune forming an obtuse angle at about the mid¬
dle ; two convexities of the enclosure of middle segment smooth, glab¬
rous . propinqiiiiM.
Episternal furrow of the mesopleune not angular, almost straight, or slightly
curved ; the two convexities of the enclosed area of middle segment with
microscopic striations, opaque . minimus.
71. — Pronotum not ridged or margined, rounded at the sides . 72.
Pronotum strongly ridged, dentate laterally ; head quadrate, nearly as long
as broad; tibiae and tarsi yellowish; otherwise black . insolens.
72. — Thorax not maculated with yellow . 73.
Pronotum and scutellum yellow; apical margins of abdominal segments
broadly testaceous . impressifrons.
73. — Enclosure of middle segment very strongly marked, the impressed lines
forming it more or less foveolate . 74.
Enclosure of middle segment not strongly marked, rather indistinct, the
lines forming it not foveolate . 76.
74. — Posterior face of middle segment transversely rugose, lines forming the en¬
closure very broad and deep, Strongly foveolate . 75.
Posterior face of middle segment rugose on apical portion only; lines form¬
ing the enclosure neither broad nor deep, not strongly foveolate (legs and
antennas entirely black) . . aler.
75. — Base of hind tibiae yellowish ; enclosure of middle segmeut bounded out¬
wardly by a narrow, smooth strip, which is broadest basally . ci ncti pes.
Hind tibiae entirely black ; enclosure of middle segment bounded outwardly
by a broad, smooth strip, which is broadest apically . nigror.
76. — Pronotum with a small, blunt prominence laterally; head with distinct
punctures, those of the front particularly so; medial channel of posterior
face of middle segment elongate fusiform ; all the tarsi brownish.
nigricoruis.
Pronotum without a prominence of any sort laterally; head indistinctly
punctured, the front likewise; medial channel of posterior face of mid¬
dle segment broad above, pointed apically ; fore and medial tarsi yellow¬
ish testaceous . Harr 1 n gt o >■ i i .
77. — Epimerum mesopleuralis distinctly ridged anteriorly . 78.
Epimerum mesopleuralis not at all ridged anteriorly . 79.
78. — Petiole of abdomen nearly as long as the two following segments united,
narrow, but little nodose at apex ; head longer than broad and with the
thorax coarsely punctured ; greater part of abdomen red.
abdominalis.
Petiole of abdomen but little longer than the second segment, stout, dis¬
tinctly nodose at apex ; head transverse, broader than long and with the
thorax finely punctured; abdomen entirely black . decorus.
79. — Petiole of abdomen longer than the following segment, slender ; coxge yel¬
low ; anterior margin of clypeus angularly produced . 80.
NORTH AMERICAN HYMENOPTERA.
219
Petiole of abdomen shorter than the following segment, robust ; coxa? black
(anterior margin of clypeus with a slight, square production ; base of
metathorax with a transverse row of short rugae) . occidental is*.
80. — Abdomen black, not banded with reddish ; four anterior legs banded with
black . pedicellatus.
Abdomen black, the anterior half of the third segment reddish ; four ante¬
rior legs yellowish, not banded . ru togas* ter.
MALES.
Epimerum mesopleuralis armed with a distinct crest or ridge before the middle
coxae, striated, punctato-striate or striato-punctate ; antenna; 12-jointed .2.
Epimerum mesopleuralis not crested or ridged, at the most with a small pointed
prominence before the middle coxae, punctured, rarely striated ; antenna;
13-jointed . 31.
2. — Anterior margin of clypeus produced into a strong, truncated process, not so
prominently, however, as in the females . 3
Anterior margin of clypeus not strongly produced medially, usually
rounded . 14.
3. — Flagellum entire, not dentate or emarginate ; sculpture very coarse on head
and thorax : first joint of medial tarsi sinuated ; fore tarsi slightly flat¬
tened . 4.
Flagellum either dentate or emarginate beneath ; sculpture less coarse ; first
joint of medial tarsi not sinuous, differing in the different species; fore
tarsi distinctly flattened . 6.
4. — Flagellum not broadened basally. being narrowed from apex, the second
joint longer than broad; abdomen coarsely punctured . 5.
Flagellum a little dilated basally. the first joint only narrowed ; the second
joint broader than long, as are also several of the succeeding joints: ab¬
domen with tolerably strong, not coarse, even punctures.
producticollis.
5. — Head between the ocelli and occiput covered with very large, deep, non-con¬
fluent punctures, those on the abdomen also strong, but less so than on
the head ; abdomen with one, more rarely with two or three terminal
bands . I liter nipt us.
Head between the ocelli and occiput with coarse, confluent punctures, less
strong than in inter ruptus , those on the abdomen also finer and closer;
abdomen with three, rarely with less, terminal bands . belltis.
6. — Ocelli forming a low triangle, tending to a curved line ; pronotum distinctly
dentate laterally; first four joints of flagellum strongly contracted
basally and produced a little at apex, the first and fourth most strongly. 7.
Ocelli forming an equilateral triangle ; pronotum rounded at the sides not
dentate ; first three or four joints of flagellum produced into a huge
tooth beneath . 12.
7. — First joint of medial tarsi shorter than the three following united, at any
rate not longer . 8.
First joint of medial tarsi longer than the three following united . 10.
8. — Occiput and cheeks strongly and sharply margined behind ; pronotum large,
very strongly crested anteriorly, the lateral tooth large and sharp ; cen¬
tral longitudinal furrow of middle segment not broad ; scape and first
abdominal segment marked with yellowish . liiontanii*.
TRANS. AM. ENT. SOC. XXII. JUNE, 1895.
220
WILLIAM J. FOX.
Occiput and cheeks not strongly margined ; pronotum not very large, nor
strongly margined, the lateral tooth short ; central longitudinal furrow
of middle segment broad . 9.
9. — Scape entirely black ; occiput scarcely margined posteriorly ; markings
whitish yellow . atriceps.
Scape yellow in part; occiput distinctly margined posteriorly; markings
bright yellow . brunneipes.
10. — Pronotum with the transverse furrow very broad and shallow, particularly
toward the sides ; greater part of tihhe yellow, the pronotum and rueta-
notum always spotted . 11.
Pronotum with the transverse furrow not very broad, but deep ; greater part
of tibiae black . parviiliis.
11. — Abdomen broad, not longer than head and thorax united; posterior face of
middle segment distinctly enclosed; scape entirely yellow.
rorriigat us.
Abdomen elongate, longer than head and thorax united ; posterior face of
middle segment not distinctly enclosed in consequence of the ridge,
dividing it from the upper surface being more or less obsolete; scape
only in part yellow . denticulatus.
12. — Joints 1 and 2 of flagellum with a huge tooth or production beneath, the
third and fourth joints much less distinctly toothed, the combined length
of the first two joints as great as that of joints 3 -6; fore femora black
and yellow . 13.
Joints 1-4 of flagellum equally dentate beneath, the combined length of the
first two joints not greater than that of joints 3 and 4 ; fore femora
rufous, striped with black and yellow . . nigrifrons.
13. — Sides of middle segment coarsely striated, upper surface and posterior face
coarsely rugose. Species Eastern . obscuriis.
Sides of middle segment rather finely striated, upper surface and posterior
face only tolerably rugose. Species Western . grucilissi tuns.
14. — Dorsulum not striated, either finely or rugosely punctured . 15.
Dorsulum striated, transversely on anterior portion, posteriorly longitudi¬
nally so (fore femora beneath armed with a sharp spine) . 29.
15. — Abdomen above not distinctly punctured, or impunctate . 16.
Abdomen above distinctly punctured, particularly the first segment . 17.
16. — First and second joints of medial tarsi very strongly produced at apex
within, almost spinose ; first joint of the flagellum distinctly longer than
the second; fore femora reddish anteriorly . sexmaculatiis.
First and second joints of medial tarsi scarcely produced at apex within ;
first joint of flagellum but little longer than the second ; fore femora in
front yellowish . trifasciatus.
17. — Fore tarsi not or but slightly flattened ; the first joint of medial tarsi not
angular . 18.
Fore tarsi distinctly flattened; the first joint of medial tarsi short, more or
less angular . 26
18. — Antennae more or less emarginate beneath . 19.
Antennae entire, subclavate, not emarginate . 28.
19. — Head with large, separated punctures, except in one case; middle segment
laterally, at least the posterior face, with a series of strong fovea* • . • -20.
Head closely and rather finely punctured ; middle segment without lateral
fovese . 24.
NORTH AMERICAN HYMENOPTERA.
221
20. — Abdomen above, particularly the first two segments, coarsely punctured, and
more or less banded . 21.
Abdomen strongly, though not coarsely punctured above, not banded, but
with lateral spots . 23.
21. — First joint of medial tarsi strongly curved ; space between the eyes at base
of clypeus not greater than the width of the latter in the middle; tro¬
chanters and femora reddish, not black . s<;alM»r,
First joint of medial tarsi not or scarcely curved ; space between eyes at
base of clypeus greater than the width of the latter in the middle- • -22.
22. — Legs not at all black, rufous and yellow; mandibles not yellow, but a spot
on episternum mesopleuralis ; abdomen more or less rufous; pronotum
strongly dentate laterally . rulipes.
Coxae, trochanters, femora except apex and spot on tibiae internally, black ;
mandibles spotted with yellow, but no spot on episternum mesopleuralis ;
abdomen not at all rufous; pronotum with the lateral tooth small.
texanus.
23. — Pronotum with a large, strong tooth on each side ; head rather finely and
closely punctured . spin i ferus.
Pronotum but slightly dentate; head with large, separated punctures.
stirpicola.
24. — First joint of flagellum not nearly as long as the two following joints united,
not more than one-quarter longer than the second . 25.
First joint of flagellum nearly as long as the two following united, more
than one-quarter longer than the second (femora at apex broadly, and
greater part of tibite and tarsi, yellow) . <*lirysargimis.
25. — Greater part of femora black ; wings not or but slightly yellowish ; dorsulum
compactly punctured; abdomen ventrally not spotted; first joint of
medial tarsi longer than the three following united. . odyiicroides.
Legs fulvous and yellow; wings strongly yellow on basal half; dorsulum
posteriorly with the punctures tolerably well separated ; abdomen more
or less spotted ventrally ; first joint of fore tarsi shorter than the follow¬
ing three united . imbutus.
26. — First joint of medial tarsi strongly angular on outer margin, shorter if any¬
thing than the following two joints united ; sculpture of dorsulum not
exceeding coarse ; epimerum mesopleuralis usually with a yellow spot-27.
First joint of medial tarsi but slightly angular on outer margin, slightly
longer than the two following joints united ; sculpture of dorsulum
exceedingly coarse ; episternum mesopleural is not spotted .rufifeniur •
27— Segments 2-6 of abdomen with a band; tibiae spotted internally, dilectus.
Segments 4 and 5 (possibly the third sometimes) with a band ; tibiae not
spotted within . bigeininus.
28 — Anterior trochanters armed with a strong spine or tooth beneath : femora
fulvous in greater part ; lateral spots or lines on abdominal segments 1-4,
a narrow band on the sixth, the ventral segments not marked with yellow
lO-maciilatus.
Anterior trochanters simple, not spinose ; femora not fulvous, yellow in
greater part ; all the dorsal abdominal segments with a broad band, the
venti-als entirely yellow . Packardii.
29. — Abdomen without bands, the spots all widely separated . 30.
Abdomen ,l with a broad yellow band at the base of fifth segment, the sixth
entirely yellow.” . aciculat us.
TRANS. AM. ENT. SOC. XXXI. JUNE. 1895.
999
WILLIAM J. FOX.
30. — Head finely punctured above, shining, not or indistinctly striated ; pronotum
declining strongly to the sides, not as wide as the occipital margin of
head, widely, though not very strongly, furrowed ; middle femora be¬
neath and greater part of middle tibiae, black ; no spots on scutellum.
singularis.
Head strongly striato-punctate above, subopaque ; pronotum declining but
little toward the sides, as wide as the occipital margin of head, deeply
furrowed ; greater part of medial femora and their tibiae entirely, yellow ;
scutellum with yellow spots . tr:ipezoia Utah (Al¬
drich); Ogden, Utah, June 20 (collection C. V. Riley, U. S. Nat.
M us.) ; Reno, Nevada (Wickham).
The type of S. laticeps is somewhat larger (14 mm.). The follow¬
ing notes are from specimens in the Museum of Comp. Zoology :
9 . — Femora varying from reddish brown to black ; £ — the pos¬
terior margin of the fourth segment narrowly interrupted, and the
base of the scutellum widely black. Weber Lake, Cal., July 22
(( )sten Sacken) ; The Dalles Oreg. June 23, Yakina River, Ellens-
burg, Wash., July 8 (Dr. Hagen) ; Twin Lake, Col. (Osten Sacken).
The later Baron Osten Sacken referred to S. nymphis Walker. That
this is Walker’s species seems quite evident, but a study of the type
is necessary.
NORTH AMERICAN DIPT ERA.
235
Klr;t(i»iii,viii normnla Loew (PI. iii. fig. 16).
Stratiomyia normnla Loew, Centu r. vi. 5.
Stratiomyia quadrigemina Loew, Centur. vi, 4.
Stratiomyia notata Loew, Centur. vi, 18.
Length ^ 9 11-12 mm. £ . — Face black, shining, with whitish pile. Antenna?
black. Thorax black, with long yellowish pile, thickest on the pleurae: basal
half of the scutellum black, apical half and spines yellow. Abdomen black,
with the following markings of yellow : second segment with a large lateral tri¬
angle, third with a narrow lateral margin (widest at the anterior angle) and a
transverse marking at the lateral posterior angle, fourth similar, except that the
lateral and lateral posterior margin is usually narrowly interrupted, it also has a
small dorsal triangle at the posterior margin, fifth with a narrow lateral margin
(obsolete posteriorly) and a central dorsal line ; venter black ; segments with a
lateral and posterior margin of yellow. Femora black ; tips of the femora, tibiae
and tarsi, yellow ; tibiae with a medial band of brown. Wings brownish, hyaline,
veins red.
9 . — Face black, whitish pile ; facial orbits and a subcordate spot below the
ocelli yellow; lower part of the occiput yellowish ; yellow of the scutellum more
prominent. Abdominal markings similar, except that the lateral and lateral
posterior margin is usually interrupted on the third, and the lateral posterior
marking on the fourth are less prominent, and in some specimens almost wanting.
Femora and outer two-tliirds of the tibiae black ; the posterior tibiae and terminal
joints of tarsi brownish : tips of the femora, basal portion of the tibiae and the
first two joints of the tarsi, reddish ; the color of the tibiae and tarsi are some¬
what variable.
Yar. quadrigemina Loew ( £ ). — This is a color variation in which
the markings on the third segment are the same as those on the
second, that is, a large lateral posterior triangle. I have in my col¬
lection a specimen that is intermediate between this and the typical
S. normnla. A specimen in the Museum Comp. Zook marked, “ a
quadrigemina, norma or normuli, differs in the flavo-bimaculata,” is
another of these intermediate forms. The male of S. normnla is
similar to that of S. norma, but the latter may be distinguished by
the greater amount of yellow on the scutellum ; the presence (usually)
of a small dorsal triangle on the third, and more hirsute abdomen.
Yar. notata Loew. — In this variety there is a transverse marking
at the lateral posterior margins of both the second and third seg¬
ments. There is also proportionately less yellow on the lateral mar¬
gins, but with upwards of twenty specimens before me I can readily
connect it with the typical S. normnla. The two forms were taken
on the same day by Mr. Wm. Brodie.
Toronto, Ontario, July 8, 12 and 17 (Wm. Brodie); New York
(Osten Sacken) ; AgriculturalCollege, Michigan (Davis); Algon¬
quin, Ill., June 2 (Dr. Nason) ; Brookings, S. D. (Aldrich) ; War
Bonnet Canyon, Neb. (Univ. Neb.).
TRANS. AM. ENT. SOC. XXII.
JULY, 1895.
CHARLES W. JOHNSON'.
2-36
Stratiomyia norma Wiedemann (PI. iii. figs. 17, 18).
Stratiomys norma Wied., Auss. Zw. ii, 62, 3.
Length % 9 12-13 min. 9 • — Face, lower part of the front, frontal and ver¬
tical orbits, ocelli and upper part of the occiput black, with yellowish pile ; facial
orbits, a large spot on the front and vertex extending on each side of the ocelli
over the vertical angle and the lower part of the occiput yellow. Antennae
black. Thorax black, with yellow and brownish tomentum ; scutellum yellow,
base black ; spines red. Abdomen black, with yellowish and blackish pile, and
the following yellow, or greenish yellow markings; a prominent triangle at the
posterior angle of the second segment, third with a small triangle at the anterior
angle, a transverse marking at the lateral posterior margin, and a small dorsal
triangle at the posterior margin : fourth with a lateral margin widest anteriorly,
a transverse marking on the lateral posterior margin, and a prominent dorsal
triangle at the posterior margin ; fifth with a narrow lateral margin, and a dorsal
vitta widest anteriorly ; venter black ; second segment yellow, with two elongate
spots along the anterior margin; third, fourth and fifth with a narrow lateral
and posterior margin of yellow. Femora red, with a wide preapical band of
brownish black ; tips of femora and the basal half of the tibiae yellow, outer half
of the tibiae and tarsi red. Wings brownish, hyaline; veins red.
■J, . — Face wholly black; the small dorsal triangle on the third segment and
the greater amount of yellow on the scutellum distinguishes it from 8. normula.
Femora brownish black ; in some specimens showing a preapical band of black on
the middle and posterior femora, tibiae and tarsi reddish yellow.
Philadelphia, Pa. ; Agricultural College, Mich., June 20 (Davis) ;
Elkhart, lad. (J. R. Weith) ; Algonquin, Ill., June 1 (Dr. Nason);
Burlington, Iowa (Dr. H. G. Griffith); Sand Hills, Neb., July
(Univ. Neb.); Allegheny, Pa. (Aldrich).
Stratioiu.yia iinilimhata Loew (FI iii, figs. 19, 20).
Stratiomyia umlimbata Loew, Centur. vi, 6.
Length 9 13 mm. 'J, . — Face, frontal and vertical triangle black ; face with
long white pile. Antennae black, under side of the third joiut brownish. Thorax
black, with a whitish pile, which is longest on the pleurae ; scutellum and spines
yellow, base black. Abdomen black, with the following yellow markings on the
segments: second with a large lateral triangle; third with a small subtriangular
spot at the anterior angles, a transverse marking at the lateral posterior margin,
and a very small dorsal triangle at the posterior margin ; fourth with lateral and
posterior margins, the latter with a small dorsal projection ; fifth with a slight
lateral margin towards the anterior angles, and a subtriangular dorsal mark not
reaching anterior margin : venter black, segments with yellow posterior margins,
widest on the second segment, where the black is widely interrupted. Femora
black, tips of the femora, basal half of the tibiae and the tarsi, yellow ; outer
half of the tibiae, the last two and tips of the other tarsal joints blackish ; the
outer half of the posterior tibiae is normally brownish, with a medial ring of
black. Wings brownish hyaline ; veins reddish.
9 . —Face, front, vertex and occiput black ; pile on the face whitish, thickest
along the orbits; front with a small, yellow, subcordate spot below the ocelli ;
lower part of the occiput, an obscure greenish yellow. Thorax black, with short
NORTH AMERICAN DIPTERA.
237
yellowish white tomentum ; scutellum yellow, the black base narrower than in
the male. Abdominal markings the same as the male, except that markings on
the second segment are usually contiguous at the posterior angles.
In a male specimen in the U. S. National Museum the marking
on the posterior margins of the third segment are contiguous, form¬
ing a margin similar to that on the fourth. A female from Illinois
has the markings on the posterior margin of the third contiguous
and widely interrupted on the fourth.
Montana (Morrison, Univ. Ivans.); Wisconsin (Loew); Brook¬
ings, S. I). (Aldrich) ; Custer, S. I). ; War Bonnet Canyon ; Lincoln,
August ; and West Pt., Neb. (Univ. Neb.) ; Cheyenne, Wyoming,
June 15 (collection C. V. Riley) ; Spanish Peak, Col. (Osten Sacken ),
Mus. Comp. Zool.; Carlinville, Ill. (Robertson).
Strsitiomyia senuria Loew (PI. iii, fig. 10).
Stratiomyia senaria, Loew, Centur. vi, 7.
Length 11 mm. ; wing 9 mm. 9 • — Face, front and upper part of the occiput
black, with whitish tomentum ; a yellow spot below the ocelli, facial orbits and
lower part of the occiput, dull yellow. Antennae black. Thorax black, with
yellowish white tomentum; scutellum yellow, with a narrow black base, spines
red. Abdomen black; second, third and fourth segments with transverse yellow
markings along the lateral posterior margins, those on the fourth short and nar¬
row, third with a small yellow spot at the anterior angles; fourth laterally mar¬
gined with yellow; fifth with a narrow lateral margin and a central stripe not
reaching the anterior margin ; one specimen shows a short, obsolete, central
stripe on the fourth ; venter black, second segment broadly margined with yellow,
or yellow with black maculatious on the lateral anterior margins ; third, fourth
and fifth with a narrow posterior margin of yellow. Femora black, tips of the
femora, tibiae and tarsi yellow ; in one specimen the anterior and middle tibiae
are annulated with brown in the middle, and the outer half of the posterior
tibiae is brown. Wings of a uniform dark brown.
Two specimens, St. Augustine, Fla.
In the type, a $ , the markings on the second segment are some¬
what triangular, and those on the third and fourth nearly of equal
size.
Stratiomyia nevadsr Bigot.
Stratiomys nevcuhe Bigot, Ann. Soc. Eut. France, xxxviii, 24.
Long. 10 mill. % . — Nigra, facie, thorace scutelloque longe et dense cinereo
villosis; abdomen nigropiloso; halteribus fuscanis, clava prasina ; spinis scutelli
pallide testaceis, apice fuscis ; tibiis basi, late fere albis, tarsis fulvo uotatis, apice
infuscatis; alis pallidissime flavis, macula stigmaticali pallide castanea.
Entierement noire, excepte : cotes de la face, thorax, ecusson. longuement et
assez densement couverts de poils gris ; abdomen avec des poils noirs et courts ;
epines de l’ecusson blanchatres, a pointe brune ; balanciers roussatres avec la
massue d’un vert clair ; base des tibias largement blanchatre, tarses roussatres
avec. l’extremite brunatre; ailes un peu roussatres ainsi que le stigmate.
TRANS. AM. ENT. SOC. XXII.
JULY. 1895.
238
CHARLES W. JOHNSON.
Amer. Septentr. (Nevada) ; one specimen.
The following description I refer to this species, a study of the
type is necessary for certainty :
Length ^ 11 mm. — Face black, with long, dense, whitish pubescence. An¬
tennae black. Thorax and scutellum black, with long whitish pile ; spines of the
scutellum yellow; halteres bright green. Abdomen black, shining ; pile black ;
venter black, segments with a narrow posterior margin of yellow. Legs black;
tips of the femora, basal half of the tibiae and two basal joints of the tarsi, yel¬
low ; the remaining joints of the tarsi brownish. Wings hyaline, veins brown.
Two specimens, Weber Lake, California, July 25 (Osten Sackeu),
Museum of Comparative Zoology, Cambridge, Mass.
This species may be readily known by its uniform black color, and
conspicuous whitish pile. This species is included by Baron Osten
Sacken in the following remark in Western Diptera, p. 213 : “I have
furthermore three Stratiomyise and one Odontomyiae from the Sierra
Nevada (Weber Lake, in July) which I abstain from describing.”
Stratiomyia Jloigenii Wiedemann (PI. iii, tigs. 21, 22).
Strati ornys Meigenii Wied., Auss. Zw. ii, 61, 2 (tab. viii, fig. 7).
f Stratiomys lineulata Macquart, Dipt. Exot. 4e Suppl. 48, 6 (tab. iii, fig. 5).
Stratiomyia anguJaris Loew, Centur. vi, 16.
Stratiomyia marginalia Loew, Centur. vi, 17.
Length 'J, £ 11 13 mm. % .-^Face black, with whitish pile. Antenna; black.
Thorax black, whitish pile, longest and thickest on the pleura : scutellum black
apical margin (between the spines) greenish yellow, spines dark yellow, the tips
more or less brownish, the size of the apical margin varies from a narrow line to
an area about one-fifth the size of the scutellum. Abdomen black, with short
black and whitish pubescence, and marked with yellow as follows : second seg¬
ment with triangular lateral markings narrowly reaching the anterior angles; in
some specimens these markings are truncated or divided anteriorly, leaving sub-
triangular or oblong transverse markings at the posterior angles, and very small
markings on the anterior angles; lateral margins of the third segment expanding
into triangles at the anterior angles, and connected at the posterior angles with
the transverse markings on the lateral posterior margins ; markings on the fourth
the same as those on the third, except that the transverse markings are much
shorter and narrower ; the form of the lateral margins varies, in one specimen
the lateral and transverse markings on the third and fourth segments are of
uniform width ; fifth with lateral margins and an even dorsal line not reaching
the anterior morgin ; venter yellow or greenish yellow ; second segment with an
oblong black spot on each side along the anterior margin, sometimes narrowly
connected; third, fourth and fifth with a transverse central spot, usually attenu¬
ated along the anterior margin, but not reaching the lateral edge ; the macula-
tions vaiy considerably, and in one specimen are almost obsolete. Femora black,
outer two-thirds of the anterior and middle tibiae black or brownish black, poste¬
rior tibiae reddish, annulated in the middle with brown ; in some specimens this
NORTH AMERICAN DIPTERA.
239
character also prevails on the middle tibiae ; tips of the femora, base of the tibiae
and tarsi yellow, tarsal joints annulated with red at the tips. Wings brown,
veins red, tips more or less a clear hyaline.
9 . — Face, front and vertex black, whitish pile longest and thickest on the face,
front shining, a spot on the facial orbits, a small subcordate spot below the ocelli
and the lower part of the occiput yellow ; in some specimens there is also a very
small spot on each side of the ocelli. Thorax black, with black and whitish
tomentum, arranged so as to form a broad dorsal and transverse line and a post-
alar spot of black. Abdomen black, with short whitish pubescence ; the yellow
markings on the second, third and fourth segments consists of a small subtrian-
gular at the anterior angles, a narrow lateral margin more or less distinct, and
narrow transverse markings at the lateral posterior margin, fifth with a lateral
margin widest anteriorly, and a dorsal stripe not reaching the anterior margin ;
venter greenish yellow, with black markings similar to those of the male, but
usually larger, leaving only a narrow lateral and posterior margin of yellow.
Over forty specimens ; southeastern Pennsylvania and southern
New Jersey; common July 5 to August 1(1; West Pt., Neb., June
(Aldrich); Riley County, Kansas, June (Marlatt) ; Blanco County,
Texas; Agricultural College, Michigan, June 20 (Davis); Algon¬
quin, Ill., June 4 (I)r. Nason).
Loew’s descriptions were based on single specimens ; with a large
series it would have been impossible to separate them. The type of
S. angularis differs from S. marginalia in having more prominent
yellow triangles at the anterior angles of the segments, and S. nigri-
ventris in having a greater amount of black on the ventral segments.
The specimen referred to, S. Meigenii, has the yellow spot on the
front, and the yellow of the scutelluin prominent. Wiedemann
describes a % , but the head in the figure is that of a $ . In the
figure the abdomen shows only four segments, or at least the color
markings indicate only four, while the vittse on the fifth segment
extends from the anterior margin and does not reach the posterior ;
the latter is the reverse in all our Stratiomyia, so .that the figure
should be considered incorrect.
Sti'atioin.yia apicnla Loew, (PI. iii, figs. 23, 24).
Stratiomyia apicula Loew, Centur. vi, 13.
Length ^ 9 12 mm. ^ . — Face, frontal and vertical triangles black ; pile on
the face white ; facial orbits slightly yellowish. Antennae black, underside of the
third and tip of the second joint brown. Thorax black, with yellowish white
pile ; scutellum black, apical margin and spines yellow. Abdomen black, with
short whitish pubescence, and with the following yellow marking on each of the
segments : a small lateral spot on the first, a large subquadrate marking at the
sides of the second ; third with a wide lateral posterior margin of about equal
extent ; fourth with a lateral margin, widest anteriorly and slightly extending
TRANS. AM. ENT. SOC. XXII.
JULY, 1895.
240
CHARLES W. JOHNSON.
onto the lateral posterior margin ; fifth with narrow lateral margins, and a central
triangle attenuated anteriorly, but not quite reaching the anterior margin ; venter
black ; segments with yellow posterior margins, widest on the second segment,
where the black consists of two large spots along the anterior margin. Femora
black, outer half of the anterior and middle, and a medial band on the posterior
tibiae brownish black : tip of the femora, basal half of the anterior and middle
tibiae, posterior tibiae and all the tarsi yellowish. Wings brown, hyaline; veins
reddish.
9 . — Face, front, vertex and upper portion of the occiput, black ; face with
whitish tomentum ; facial orbits, a small subcordate spot below the ocelli, and the
lower portions of the occiput, greenish yellow. Thorax black, with yellowish
tomentum ; scutellum black ; apical margin and species yellow. Abdominal
markings the same as the male, except that the markings on the side of the second
segment are more quadrate.
Burlington, Iowa (Dr. H. G. Griffith) ; Algonquin, Ill., June 8-
19 (Dr. Nason); Douglas County, Kansas, June (Univ. Ivans.);
War Bonnet Canyon and Lincoln, Neb. (Univ. Neb.).
Slratiomyia disculi* Loew (l’l. iii, figs. 27, 28).
Slratiomyia discalis Loew, Centur. vi, 14.
Length % 9 1 1 mm. . — Face, frontal and vertical triangle black ; pile long,
yellowish. Antennae black. Thorax black, with long, dense, yellowish pile;
scutellum black, with long pile; apical margin and spine yellow. Abdomen
black, shining : thick and very convex; pile on the first, second and fifth seg¬
ments yellowish ; on the third and fourth black ; a small spot at the posterior
angles of the first, a large quadrate marking on the sides of the second ; a trian¬
gular mark at the anterior angles of the third, and a dorsal line on the fifth, yel¬
low ; first, fourth and fifth ventral segments black, with narrow lateral and pos¬
terior margins ; second and third yellow, with a narrow posterior margin of black
on the second, and two black spots on the posterior margin of the third ; pile on
the entire ventral surface yellow. Femora and tibise black, or brownish black ;
tip of the femora, basal third of the tibiae, yellowish ; basal half of the posterior
femora and the tarsi brownish. Wings brown, hyaline.
9 . — Face, front, vertex and occiput black ; face with thick yellowish pubes¬
cence, sparse on the front and vertex; facial orbits and a small cordate spot
below the ocelli yellow. Antennae black, proboscis brownish. Thorax black,
with a dense yellowish tomentum ; scutellum black, apex and spines yellow.
Abdomen black, shining, with a very short whitish pubescence; a subtriangular
mark on the sides of the second, a small triangular mark at the anterior angle of
the third, a very narrow lateral margin on the fourth and fifth, and a dorsal line
on the fifth, yellow ; venter same as the male ; posterior tibiae, tarsi (except the
tips) and basal half of the femora, yellow.
Provo, Utah (Wickham); West Point, Neb., May (Aldrich) ;
Minnesota (Univ. Kans.) ; Algonquin, Ill. (Dr. Nason); Pennsyl¬
vania (Philip Nell) ; Agricultural College, Michigan (Lowe) ; West
Virginia and Massachusetts, June (Riley); Spanish Peak, Col.
(Museum Comparative Zoology).
NORTH AMERICAN DIPTERA.
241
SI r;i I iomyia qiiaternaria Loew (PL iii, figs. 25, 26).
Stratiomyia quaternaria Loew, Centur. vi, 12.
Length % 9 11 mm.; wing 9 mm. % .■ — Face black, whitish pile. Antennae
black, brownish on the. underside of the third joint. Thorax black, with long,
brown, reddish pile, not quite as wide as the head ; scutellum black ; apical
margin and spines yellow. Abdomen black, with black and yellowish pile, and
marked with yellow as follows : a large, square, lateral marking on the second ;
a large lateral marking on the third, nearly as wide as that on the second, but
not touching the anterior margin its full width, and with an indentation on the
inner edge near the posterior margin ; fourth with a lateral margin widest ante¬
riorly, or with a small triangle at the anterior angles ; fifth with a very narrow
or obsolete lateral margin, and a medial line not reaching the anterior margin ;
venter yellow, second segment with two elongated black spots along the anterior
margin, midway between the centre and lateral margin ; third with a central
black square of greater or less extent, sometimes consisting only of an anterior
marginal line ; fourth black, with a wide lateral and narrow posterior margin (in
one specimen a narrow medial line) ; fifth black, with a narrow lateral and poste
rior margin. Abdomen wider than the female, sides of the second, third and
fourth almost parallel. Femora black, tip of the femora, base of the tibire and
posterior tarsi yellow; outer half of the anterior and middle tibiae dark brown,
posterior tibiae annulated with brown in the middle ; tarsi reddish brown. Wings
brown, hyaline ; veins red, diseal cell emits three veins.
9 • — Face, front and vertex black : whitish pile, a small spot below the ocelli,
and one on each side of the face yellow ; the yellow markings on the second ab¬
dominal segment the same as in the male ; on the third segment the same as the
male, or much smaller, and consisting of a subtriangular spot at the anterior
angle and a narrow margin at the posterior angle ; the form of the yellow mark
ings on the third segment is the most variable character.
Allegheny, June 7, and Northumberland County, Pennsylvania
(Aldrich); Agricultural College, Michigan, June 16 (Davis); Al¬
gonquin, Ill., June 4 (Dr. Nason) ; Denver, Col. (Beales).
Stratiomyia maculosa Loew (PI. iii, figs. 13, 14, 15).
Stratiomyia maculosa Loew, Centur. vii, 19, 9 .
Stratiomyia insignia Loew, Centur. x, 7, .
Stratiomys dentata Bigot, 9 Ann. Soc. Ent. France, xvi, 1879, 210.
Stratiomys lacerata Bigot, 'J, Ann. Soc. Ent. France, xvi, 1879, 211.
Length % 9 14 mm. %. — Face black, with yellowish white pile ; occiput nar¬
rowly margined with yellow. An ten me black. Tborax black, with long, dense,
yellow pile ; scutellum yellow, base black. Abdomen black, with yellow pubes¬
cence, and marked with yellow as follows : the large lateral spots do not reach
the anterior margin, except near the angles ; second segment with a large sub-
triangular lateral spot; third with a large, square, lateral spot, which contains,
near the lateral margin, a small, oblique, black spot; in one specimen this spot is
wanting, and there is a small dorsal triangle at the posterior margin ; in this
specimen the square markings on the fourth segment contain a small oblique
black spot, and the yellow on the posterior margin is continuous. In the first
specimen (fourth segment) the spot is connected with the black, thus forming an
incisure into the square, yellow, lateral spot ; yellow not continuous on the pos
TRANS. AM. ENT. SOC. XXII.
(31)
JULY, 1895.
242
CHARLES W. JOHNSON.
terior margin, and only a small dorsal triangle; fifth with a lateral margin,
widest anteriorly, and a dorsal line. In specimen referred to there is a round
spot on each side of the dorsal line ; venter yellow, with a central row of large
black maculations; laterally attenuated along the anterior margin, but not reach¬
ing the lateral or posterior edges ; in some specimens the black on the second seg¬
ment consists only of an irregular line ; the ventral markings are quite constant
in both sexes.
9- — Face, front and occiput, yellow; oral margin, cheeks and medial facial
line (more or less distinct) a transverse line from the base of the an ten me to the
eyes and the vertex, black ; in some specimens the two latter are narrowly con¬
nected at the sides; vertical angle with two yellow spots, sometimes connected
on the cervex. Thorax black, with yellowish tomentum ; scutellum wholly yel¬
low. Abdomen black; the variable yellow markings might be described from
three specimens, as follows : First. — The square lateral markings on the second
segment with a small lateral spot of black ; the square lateral markings on the
third and fourth with a broad oblique incisure of black ; a small triangle on the
posterior margin of the second, a larger one on the third, and the one on the
fourth much larger and greatly attenuated, but not reaching the anterior margin ;
the yellow markings not connected at the posterior margin; fifth with a dorsal
line, on the sides of which are spots narrowly connected, hut not connected with
the lateral margins. Second. — The square lateral markings on the second segment
without the small black spots; lateral markings on the third and fourth with
oblique black spots; second segment with a small dorsal triangle, third with a
larger triangle; fourth with a much larger and attenuated triangle, not reaching
the anterior margin, the yellow markings connected at the posterior margin;
fifth with a dorsal line, on each side of which is a spot narrowly connected with
the dorsal line and lateral margin. Third. — The square lateral markings on the
second segment with small black spots and a prominent dorsal triangle ; lateral
squares on the third with black spots and a larger dorsal triangle; fourth segment
yellow, except a narrow anterior margin, the lateral spots and two minute point;
on the posterior margin of black ; the markings on the fifth segment might be
described as a broad dorsal line, with a spot on each side broadly connected with
the dorsal line and lateral margins, or yellow, with a narrow anterior margin,
and subtriangular markings at the posterior angles, of black. Femora black ; tips
of the femora, tibia; and tarsi, reddish yellow ; middle of the tibia; obscurely
annulated with brown, most prominent on the posterior tibia;. Wings brownish,
veins dark yellow.
Alameda County, California (Coquillett) ; San Rafael County,
California, April and May (Osten Sacken); Ogden, Utah (Riley),
U. S. National Museum.
The above description is based on four males and four females.
The great variation in color is remarkable, in comparison with other
North American species. The black face and base of scutellum of
the male led Loew to describe it as another species. Baron Osten
Sacken, in Western Diptera, p. 213, refers to the two species S.
maculosa and S. ittsignis as being identical.
NORTH AMERICAN DIPTERA.
243
Stratiomyia l»a«l ins Walker (PI. iii, figs. 11. 12).
Stratiomys BadAus Walker, List, iii, 529, 1. c. iv, 1157.
Stratiomys ischiaca (Harris), Walker, List, iii, 529.
Stratiomyia picipes Loew, Centur. vii, 21.
Length y 9 11 mm. 'J, . — Face and lower portion of the occiput yellow; face
with long yellow pile; a wide facial line, mouth, vertical triangle and upper part
ef the occiput black. Antennae black. Thorax black, with brownish pile ; scu-
tellum yellow, base black ; apical margin and spines red. Abdomen marked with
yellow, as follows : second segment with a small spot at the anterior angles, and
a transverse marking on the lateral posterior margins ; those on the third seg¬
ment similar, except that the markings on the lateral posterior angles are longer,
and in some specimens almost join ; fourth with a spot at the anterior angle, and
a continuous posterior margin, from which extends, anteriorly (for about two-
thirds the length of the segment), a medial stripe widest at the base ; the fifth
with a very narrow lateral margin and a medial stripe not reaching the anterior
margin ; venter black, with lateral spots on the first and a quite uniform posterior
margin of yellow to all the other segments. Femora black, varied with brown ;
basal third of the tibia; yellow ; tips of the femora, tibite and tarsi, red. Wings
brownish, hyaline; veins reddish.
9 . — Vertical portions of the occiput, vertex, front, facial line and mouth black.
Face, two large spots on the front, two on the vertical angles and lower part of
the occiput yellow ; pile on the thorax shorter than in the % and with somewhat
conspicuous whitish tufts at the humeri, suture, posterior angles and pleurae ;
yellow of the scutellum more prominent. Femora red, with a wide, variable
band of brownish black.
Franconia and Mt. Washington, N. H. (Mrs. Slosson) ; Massa¬
chusetts (Harris); “English River, Kennicot; Canada, Cooper”
(Loew).
Walker’s name having priority, I have adopted instead of Loew’s.
In describing the species Walker gave the habitat as “ New Hol¬
land.” This he corrects in List, pt. iv, p. 1157, as follows : “ for New
Holland read Newr Hampshire, and unite the description of S.
Badius with that of S. ischiaca.” The latter name first appeared in
“Harris’ Catalogue Insects of Massachusetts,” 1835 (name only).
Strut iom.yiu mutabilis Fabric; us (PI. iv, fig. 3).
Stratiomys mutabilis Fabr., Ent. Syst. iv, 262; Syst. Anti., 81; Wiedemann
Auss. Zw. ii, 63, tab. 8, figs, a-d ; Perty, Del. Anim., etc., tab. 38. 14 ;
Bellardi, Saggio, etc., i, 30; Schiuer, Novara, etc., 61.
Stratiomys fasciata Fabr., Ent. Syst. iv, 266; Syst. Anti. 81, [Bellardi],
Length % 9 9 mm. — Face black, with white pile, which is very long and thick
on the inferior orbits; facial prominence shining; facial orbits, and a spot on
each side of the prominence near the base of the antennae, yellow. Antennae
black, basal half of the first joint reddish. Thorax black, with thick whitish
pile; posterior angles yellow ; scutellum black, inferior margin, basal angles and
spines, yellow; tips black. Abdomen black, with a dense pubescence, which, in
certain lights, show a silvery reflection (more noticeable on the ventral surface),
segments narrowly margined with yellow ; a band occupying the posterior two-
TKANS. AM. ENT. SOC. XXIX.
JULY, 1895.
244
CHARLES W. JOHNSON.
thirds of the fourth, and one occupying the medial third of the fifth segment
yellow ; venter yellow ; all the segments with a basal hand of black, the first
segment also has a posterior band. Femora brownish black ; tibise and tarsi red¬
dish, terminal half of the tarsi brownish ; anterior half of the wings yellowish,
the outer portion of this with a brownish tinge.
9 . — Face and front black, with yellowish white pile ; facial and frontal orbits,
two spots above, and two below the base of the antenme and occiput, yellow-
Thorax black, pubescence yellow; humeri, a narrow, raised, lateral line that
divides the dorsum from the pleurae, and the posterior angles yellow; scutellum
and spines yellow, discal portion of the scutellum and tips of spines, brown.
Orizaba, Mex. (Prof. Bruner); Tehuantepec (collection C. V.
Riley, U. S. National Museum); Panama (Mils. Comp. Zool.) ; San
Geronimo, Guatemala (Champion) ; 6000 to 7000 feet Irazu Costa
Rica (Rogers) ; Cayenne; Brazil.
Strsitiom.viii constans Loew (PI. iv, figs. 1, 2).
Strntiomyia constans Loew, Centur. x, 8.
Length % 9 9 mm.; wings 7 mm. % . — Face black, with silvery white pile;
a small spot on each side of the facial protruherance, a spot on the orbits and the
lower part of the occiput yellow ; oral margin more or less brownish : proboscis
black, base brown, first and second joints of the antennse red, tips of the first
and the third joints black. Thorax black, whitish pubescence ; pleurae and pectus
with silvery white pile; humeri, a spot forward of the suture and the posterior
angle, yellow ; pleurae with an irregular spot on the prothorax, a smaller one on
the mesothorax and metathorax, yellow; scutellum yellow; spines red. Abdo
men black, with whitish pubescence (silvery in certain lights), and marked with
yellow, as follows: second segment with subtriangular markings at the lateral
posterior angle ; third with a wide posterior hand (in one specimen narrowly in
terra pted) : fourth with a narrow posterior band (which is broadly interrupted
in one specimen) ; all the segments with a narrow lateral margin ; venter greenish
yellow, with silvery white pubescence ; first segment with two spots and a narrow
posterior margin of black ; second, third, fourth and fifth, with an anterior band
of black, laterally attenuated, but not quite reaching the lateral margin; the
band on tin- second segment is usually interrupted. Legs uniform red ; anterior
third of the wing dark brown ; veins reddish, the remainder of the wing brownish
hyaline.
9 . — Face, front, vertex and occiput yellow ; with yellowish pubescence ; oral
margin and a line extending front there to the orbits brownish black; base of the
antennse surrounded by black, from which extends a central line to the facial
prominence, and one on each side midway between the facial line and the orbits;
narrowly connected above with the square black marking on the front and vertex ;
vertical orbits brownish, and connected with the black of the vertex. Thorax
black: humeri, a lateral stripe extending to the suture; posterior angle, scutellum
and pleurae, yellow ; the lateral stripe and pleurae narrowly divided by a promi¬
nent dorso-pleural suture; the posterior margin of the third and fourth segments
continuous; prominent and of uniform width.
Blanco County, Texas.
NORTH AMERICAN DIPTERA.
245
Stratiomyia Gerstaeclseri Bellardi.
Stratiomys Gerstaeclceri Bellardi, Saggio, etc., i, 31, tab. 1, fig. 10.
■J, . — Black, with greenish stripes. Head broad, eyes naked and contiguous near
base of front, ocelli yellow, front triangular, black, with yellowish pubescence.
Antennae long, black, base of the first yellowish, face very prominent, black
shining ; pubescence whitish, with two yellow spots near the orbits, the upper
one near the base of the antennae the lower one on the inferior orbits ; apex of
the epistoma marked with yellow ; palpi yellow, proboscis black. Thorax sub-
quadrate, black, pubescence yellow, posterior with two greenish markings; pleurae
and pectus with whitish pile; scutellum black, spines yellow, halteres green, base
brown. Abdomen subquadrate, depressed, black, somewhat naked, pile yellow,
obsolete, margins greenish yellow, second and third with a band at the posterior
margin band small and not interrupted ; venter green tomentose, silvery. Legs
brownish black ; femora very black, tibiae and tarsi obscure yellow ; apex of the
tarsi brown. Wing, anterior margin broadly, densely fuscous, posterior margin
hyaline. Length 7 mm. ; wings 18 mm.
Mexico (Salle), Bellardi.
This species, on first appearance, seems related to Stratiomyia sab-
alba Walker, but the bands on the second and third segments are
not interrupted.
Stratiomyia bimaculata Bellardi.
Stratiomys bimaculata Bellardi, Saggio, etc., App. 10. fig. 7.
. — Black, with two whitish spots. Head broad, eyes near the base of the
front contiguous ; front small, triangular, black, below with yellowish silvery pu
bescence. above with black pubescence. Antennae very long, black ; base of the
first joint yellowish, face prominent, middle longitudinally carinate, black, shining
with thin whitish pubescence ; palpi brown, near apex yellow, proboscis black.
Thorax subquadrate, slightly convex, black ; tomentose somewhat dense and yel
lowish brown, a green spot between the base of the wing and scutellum ; scutellum
black, spines short, black, and near the apex, yellowish : pleurae and pectus black,
with whitish pubescence ; halteres green, near the base yellow. Abdomen sub¬
quadrate, depressed, black, tomentose brown ; second segment with two large,
greenish white spots, contiguous with the posterior margins of the segments and
curved anteriorly, middle stripe small; venter white, silvery tomentose. Legs
brownish black, all of the femora black ; tibiae and tarsi reddish yellow. Wings
small, rather long, anterior broadly stained with black, near the posterior margin
clouded. Length 11 mm. : wings 20 mm.
Cosamaloapam, Mexico (Salle), Bellardi.
Doubtful and Undetermined Species.
Stratiomyia const ricta Walker
Stratiomys constricta Walker, Trans. Ent. Soc. n. ser. v, 268.
'J, . — Deep black. Head with slightly silvery tomentum in front and with gray
pubescence beneath and behind ; scutellum with two piceous spines. Abdomen
piceous at the tip, and with a band of slightly silvery tomentum on each seg¬
ment: tarsi and hind tibia: tawny. Wing lurid at base, dark brown from thence
to more than half the length, vitreous and colorless toward the tip. Length 6
lin. ; wings 12 lin.
Mexico.
TRANS. AM. ENT. SOC. XXII.
july, 1895.
24G
CHARLES W. JOHNSON.
Sti'iilioiiijia pin an is Walker.
Stratiomys pinguis Walker. Trans. Ent. Soc. n. ser. v, 270.
9 . — Blackish. Head with ferruginous tomentum above with whitish pubes¬
cence in front; hind side with silvery tomentum. Antennae black ; third joint
lanceolate towards the tip, much longer than the first. Thorax with ferruginous
tomentum and with ferruginous stripe along each side; scutellum with two fer¬
ruginous spines. Abdomen with bands of slightly gilded tomentum on the bor¬
ders of each segment ; underside with bands of whitish tomentum, which are
dilated on each side, and with a broad, tawny, discal stripe. Femora and tibiae
beneath and tarsi, tawny. Wings vitreous, lurid along the costal from the base
to nearly two-thirds its length. Length 6 lin. ; wing 12 lin.
Mexico.
Strafioiujia subulha Walker.
Stratiomys subalba Walker, List, etc., v, 43.
f Stratiomys subalba Bellardi, Saggio, etc., i, 31 ; Osten Sacken, Biol. Ceut.-
Amer. Dipt. 36.
“ Male. — Black, clothed beneath with silvery down. Antennae nearly twice the
length of the head; first joint tawny towards the base, nearly six times the
length of the second ; flagellum elongate-fusiform ; scutellum tawny along the
hind border, with two testaceous spines. Abdomen with two interrupted whitish
bands, one on the second, the other on the third segment; underside pale green,
with silvery tomentum. Legs tawny ; femora black. Wings limpid, narrow,
dark brown in front ; halteres white. Length of body 3 lines ; wing 6 lines.
“Para. From Mr. Bates’ collection (Walker).”
“ Male. — Black, vittae white. Head broad, eyes near the base of the front con¬
tiguous; front small, triangular, black, with yellow pile. Autennae long, black ;
first joint yellow, near the apex black ; face prominent, carinate, black, shining,
with sparse white pile; palpis flavis; proboscis black. Thorax subquadrate,
black, tomentum rather long, yellow, a pale spot between the base of the scutel¬
lum and base of the wing; scutellum black, bispinose; spines yellow, short;
pleurae and pectus black, with white pile ; halteres yellow, knob green. Abdo¬
men subquadrate, black ; second and third vittae near the posterior margin ; vittae
rather broad, interrupted in the middle, white ; lateral margin of the second,
third and fourth segments yellowish; venter yellow, with silvery tomentum.
Legs black and yellow ; femora black ; tibiae and tarsi yellow. Wings yellowish,
towards the posterior margin broadly hyaline, and the anterior margin fuscous.
Length 8 mm. ; length of wings 16 mm.”
Tampico, Mex. (de Saussure). Bellardi Baron Osten Sacken
(Biol. Centr.-Amer. Dipt. 86) refers to this species as follows :
“ I cannot believe that this species is merely a variety of S. muta-
bile, besides the very considerable difference in the coloring of the
body and wings (the costal half of which is uniformly brown). The
abdomen is squarer and flatter than in the male of that insect.
Schiner (Reise d. Novara Dipt. p. 61) speaks of varieties of S. mu-
tabilis with the costal half of the wing uniformly brown ; and Arri-
NORTH AMERICAN DIPTERA.
247
balzaga (Catalogue, etc., p. 128) regards S. subalba Walker as a
mere variety of S. mutabilis. But is Schiuer right ? and is /S', sub¬
alba Arrih. the same as S. subalba Bell.? meanwhile I cannot be¬
lieve, until we have proof of the contrary, that the four male speci¬
mens before me are a mere variety of S. mutabilis
I have not seen this species.
Stratioinyia gonipliorn Say.
Stratiomys goniphora Say, Jour. Acad. Nat. Sci. Pliila., vi. 161 ; Compl. Wr.
ii, 356.
“Black. Thorax with minute golden hairs; beneath greenish. Head yellowish
white, two undulated, black, frontal hands; vertex black, yellowish behind ;
hypostoma with a lateral black dot, sometimes obsolete; proboscis black. An¬
tennae black, occiput black. Thorax with numerous small golden hairs ; a yel¬
lowish line over the wings; scutel black, posterior margin and spines yellow.
Wings hyaline, costal nervures and cellule yellowish; middle nervures blackish,
tergum black, with lateral yellow triangles and tip ; beneath pale greenish, pectus
on the disc black ; feet yellowish, a line between the thighs black ; venter on the
posterior disc ferruginous (Say). Length more than three-tenths of an inch.
“ Inhabits Mexico.”
Strafiomyia rohusia Walker.
Stratiomys robusta Walker, List, v, 37.
Nigra: oculi testaceo exparte marginati; antenna: capite duplo longiores; scu-
‘tellum margine postico spinisque 'fiavis ; abdomen crassum, marginibus vitta
apicali ventreque flavis, hac fascius tribus abbreviatis nigris: pedes flavi, femori-
buc nigris. tibiis nigro cinctis ; alse fuse®, apice limpid® ; halteres flavi.
Fern. — Black. Head testaceous about part of the eyes. Antennae about twice
the length of the head ; first joint full six times the length of the second. Thorax
clothed with pale down ; hind border and spines of the scutellum yellow. Ab¬
domen convex, very thick, yellow along the sides, and with a yellow stripe on
the apical segment ; underside yellow, with three broad, black bands, which are
much abbreviated on each side. Legs yellow ; femora black ; a black band on
each tibia. Wings brown, with limpid tips; veins piceous; halteres yellow
Length of the body 5 lines ; wings 10 lines.
North America (Walker).
Strationiyia nigrifrons Walker.
Stratiomys nigrifrons Walker, List, iii, 531.
“ Mas.- — Nigra ; scutelli margine postice flavo, abdominis lateribus maculisque ad
apicem duabus flavis, ventris fasciis flavis, antennis pedibusque nigris, tibiis apice
tarqu fulvis. alis fuscis.
“ Body black. Head as broad as the chest, clothed with tawny hairs ; eyes
black ; a small part on each side composed of very small facets ; mouth and feelers
black; chest and breast clothed with dark tawny hairs; hind border of the scut¬
cheon yellow, armed with two tawny spines. Abdomen nearly oval, a little
broader and longer than the chest, thinly clothed with short tawny hairs, yellow
on each side, and adorned with a yellow spot on each of the last two segments ;
TEANS. AM. ENT. SOC. XXII.
JULY, 1895.
248
CHARLES W. JOHNSON.
hind border of each segment on the underside adorned with a yellow stripe,
which is widened in the middle. Legs black, clothed with short tawny hairs:
shanks tawny towards the base ; feet tawny ; hind slianks-tawny, with two black
bands. Wings brown, wing-ribs pieeous ; veins ferruginous ; poisers tawny, with
apple-green knobs.
“ Fem. — All the facets of the eyes very small ; hind border of scutcheon tawny ;
sides and hind borders of the segments of the abdomen tawny, its upper side also
adorned with a short tawny stripe at the tip, and a large tawny spot on each side
of the base ; feet pieeous above : claws black, tawny at the base. ; knobs of poisers
tawny. Length of the body 6-6.5 lines; wings 10-11 lines (Walker).
St. Martin’s Falls, Albany River, Hudson’s Bay.
Straf iomyia simplex Bigot.
Stratiomys simplex Bigot, Ann. She. Ent. France, xxxvii, 24.
“ 9 • Long. 8 mill.
“Nigra; facie, fronte, thorace, seutello, parce cinereo-flavido villosis et tomento
flavido intermixto; spiuis scutelli testaceis, apioe fuscis; halteribus testaceis, clava
prasina; abdomine fere nudo, flavido anguste circumdato, segmentis 2, 3 et 41S.
utrinque, apice, vitta flavida, angusta, notatis, ventre prasino flavescente ; femori
bus nigris, albido tomentosis, tibiis, fusco annulatis, fulvis, tarsis fuscanis, basi
late fulvis; alis fere hyalinis, macula stigmaticali fulva, venis fulvo pallido lim-
batis. Antennarum segmento 1° abbreviato.”
“Noire. Face, front, thorax, ecusson, couverts d’une villosite gris jaunatre,
melaugee d’un fin duvet squammeux egalenicnt jaunatre, flancs a poils gris ;
epines de l’ecusson testacees, a pointe brune : balanciers testaces, a massue verte ;
abdomen a peu pres mi, finemeut borde de*fauve, 2e, 3e et 4e segments avec, de
chaque cote de l’extremite une demibande etroite. jaune, ventre d’un jaune ver-
datre; cuisses noire, a duvet blancliatre, genoux et tibias fauves, ainsi que la base
de tous les segments tarsiens, uu anneau brun, etroit, sis vers le milieu des tibias
Premier segment des anlennes relativement court.
“ Texas, Colorado, 3 specim.”
ODOJfTOMYIA.
Odontomyia Meigen Klassific., etc., i, 128, 1804.
Stratiomys in part, of early authors.
Rather large, color variable, green or yellow with black markings,
or black, with green and yellow markings. Males and females, as a
rule, vary considerably in appearance. Head hemispherical, eyes of
the male contiguous, hut broadly separated in the female ; ocelli
prominent, face rounded or somewhat prominent and slightly cari¬
nate. Antennae inserted near the middle of the head, variable ; first
joint less than three times the length of the second, third longer
than the first and second together, more or less tapering, without
style or bristle, and composed of five annuli. Thorax subquadrate
and pilose in the male, quadrate and tomentose in the female; scu-
tellum prominent, with two spines. Abdomen ovate, flattened, and
NORTH AMERICAN DIPTERA.
249
but slightly convex, with five visible segments. Legs of moderate
size, tibiae without spurs. Wings clear hyaline, veins yellowish,
anterior veins crowded, third longitudinal vein branched in the more
typical forms, and from the discal cell emits three equal or unequal
veins, sometimes the lower veins that arises from the discal cell
(fourth longitudinal vein) is faint or rudimentary, and the third and
fourth posterior cells are coalescent, but in such cases the discal cell
will usually show an angulation indicating its origin.
Type of the genus 0. ornata Meigen, of Lurope.
In the species placed in this genus there is a greater variation to
contend with than in the genus Stratiomyia. In the first or leading
character, which distinguishes this from the preceding, viz., “first
joint of the antennae less than three times the length of the second
there is a gradual lengthening of the first joint from less than twice
the length of the second until the full limit is reached, as in 0. flavi-
cornis and 0. occipitalis. In the latter the third longitudinal vein
is simple, but this character is not confined to those with an unusual
long first antennal joint, but is characteristic of a number with nor¬
mal antennae. Again, in the case of O. flavicornis and 0. occipi¬
talis, which have the same alar and antennal characters ; the eyes
of the male of the former are pubescent, while the latter are glab¬
rous. Rondani founded the genus Psellidotus on “eyes hairy, type
0. elegans vel cruciata Macq.” A male specimen of 0. elegans
before me shows that the first and second joint of the antennae are
subequal, and the third longitudinal vein is branched. In 0. viridis
Bellardi and 0. obscura Oliv. the eyes of both the male and female
are pubescent, third longitudinal vein branched in the former, and
in the latter simple.
Another genus to- which some of the species have been referred is
Exchostoma Macq. ; type E. nitida Macq. of southern Europe. I
have been unable to make any of our species agree satisfactorily with
this genus. Bigot’s Exchostoma caliceps I have referred to Loew’s
0. nig rirostris. Dr. Williston’s says “ Bigot’s species is in any event
an Odontomyia .”
A universal study of this and allied genera may prove the necessity
of placing some of our species in other genera; but until this is done,
and we have a better knowledge of the American species, such a
course would be unadvisable. Some of my determinations may
eventually prove to be in error, but I have honestly endeavored to
straighten out this neglected group in the hope of furthering an in-
(32) JULY, 1895.
TKANS. AM. ENT. SOC. XXII.
250
CPI ARLES W. JOHNSON.
terest in their study. The following table contains only those species
found north of Mexico :
1. — Third longitudinal vein branched . 2.
Third longitudinal vein simple . 13.
2. — First antennal joint less than twice the length of the second . 3.
First antennal joint more than twice the length of the second . 22.
3. — Eyes glabrous . 4.
Eyes pubescent . 24.
4. - — Abdominal markings of the % 9 dissimilar . 5.
Abdominal markings of the 9 similar . 6.
5. —Thorax: disc usually with two irregular markings . biuofata Loew.
Thorax : disc without markings (spines of the scutellum blunt).
varipes Loew.
6. — Face of both sexes yellow . 7.
Face of male black, female yellow . rufipes Loew
7. — Abdominal markings triangular, attenuated and reaching the lateral mar
gins . i'iucta Oliv.
Abdominal markings triangular, not reaching the lateral margins.
dorsalis Fabr.
8. — Abdomen of the 9 with transverse bands; ^ with dorsal line . 9.
Abdomen of the 9 with transverse bands; % with only lateral markings
at the posterior angles . iurcqnalis Loew.
9. — Scutellum and spines yellow . arena! ;i Loew.
Scutellum and spines black . . Ilava Say.
10. — Scutellum more or less yellowish, without spines . 11.
Scutellum black, with spines . 12.
11. — Scutellum wholly yellow; black of the vertex does not extend over the
vertical angle . fallax n. sp.
Scutellum, base black ; black of the vertex extends over the vertical angle ;
proboscis longer . nigrirostris Loew.
12. — Wings: veins very dark brown, face produced . liigerrima Loew.
Wings: veins reddish, face rounded, front broad . pilosus Day.
13. — Scutellum 9 wholly green ; ^ brownish . 14.
Scutellum 9 black, with lateral margin green ; 'J, black. lexasiana n. sp.
14. — Thorax ( 9 ) disc with two green stripes ; ^ pleurae yellowish.
tri vittala Say.
Thorax ( 9 ) disc without stripes; pleurae black . verfebrata Say-
15. — Front and vertex black . 16.
Front and vertex red . liydroleonoides n. sp.
16. —Pile (pubescence) on the mesonotum short . 17.
Pile (pubescence) on the mesonotum moderately long, . americana Day
17. — Abdomen with a wide dorsal line, usually narrower in the 'J, than in the
female . 18.
Abdomen: dorsal line wanting; second, third, fourth and fifth segments
entirely green . Aldriclii n. sp.
18. — Front without yellow spots . virgo Wied.
Front with yellow spots . pilinistna Loew.
NORTH AMERICAN DIPTERA.
251
19. — Abdomen black, with transverse marking, a lateral posterior angle.
Abdomen black, with a wide, continuous, lateral margin, third antennal
joint tapering to a tine poiut . microstoma Loew.
20. — Femora black; abdominal markings on the % usually not triangular. . • .21.
Femora yellow ; abdominal markings on the usually triangular.
pubescens Day.
21. —Front and vertex marked with yellow . intermedia Wied.
Front and vertex wholly black . lioodiana Bigot.
22. — First and second joints of the antennas black . 23.
First and second joints of the. antennae red . 24.
23. — Front and vertex wide, lateral thoracic stripe continuous.
liieroglypliica Oliv.
Front and vertex narrow lateral thoracic stripe only posteriorly of the suture.
similis n. sp.
24. — Eyes pubescent; scutellum of the 9 yellow . 25.
Eyes glabrous; scutellum black, with yellow margin- .occipitalis n. sp.
25. — Abdomen (%) broad, with narrow markings pilose . 26.
Abdomen ( 'J, ) narrow, with wide marking, pubescent- • llavicornis Oliv.
26. — Antennae long ; first and second joints yellow, third black, .obscura Oliv.
Antennas short; reddish or dark brown throughout . viridis Bell.
Odoutoinyia biuotafa Loew (PI. iii. figs. 29, 30, 31, 32).
Odontomyia megacephala Loew, Centur. vi. 20 (non 0. megacephala Oliv.).
Odontomyia binotata Loew Centur. vi, 22; Day, Proc. Acad. Nat. Sci. Phila.
1882, 81.
Odontomyia bicolor Day, Proc. Acad. Nat. Sci. Phila. 1882, 78.
Length ^ 9 11-14 mm. % . — Face, occiput and vertical angle green : vertical
triangle black, ocelli yellowish, frontal triangle small, brownish ; face with thin
whitish pile, oral margins yellowish. Antennae reddish ; third joint dark brown,
tip black, first and second joints subequal ; palpi and proboscis yellow, end of
the, proboscis black. Thorax black with yellowish pile, long and dense on the
sides: the green markings show the following variation : humeri and posterior
angles green; marking at the posterior angle extends laterally to the suture;
lateral stripe continuous from the humeri to the posterior angle, usually with
two spots on the disc of the thorax ; pleurae green, pectus blackish ; scutellum, basal
half black, apical half green, sometimes totally greenish yellow; spines yellow,
tips black. Abdomen green, with an irregular black dorsal stripe, reaching the
posterior margin of the fifth segment and more or less contracted on the second
and third segments, a small black spot is usually present at the anterior angle of
the fourth segment; venter green. Legs reddish ; basal half of the femora and
tibiae yellow, outer half of the femora, tibiae and first joint of the tarsi reddish ;
tip of the tibiae (especially the anterior and middle) and tip of the first and re¬
maining joints of the tarsi brown, to brownish black. Wings hyaline, veins yel¬
low, third longitudinal vein branched ; discal cell emit three stroug veins.
9 . — Face, front, occiput and vertical angle green ; vertex, a wide, transverse
line on the front midway between the antennae and ocelli, and narrow lines at
the vertical angle separating the green of the vertical from that of the occiput,
black ; in some specimens this latter character is wanting, and the vertical and
frontal lines are narrowly connected by two longitudinal lines, thus forming three
green spots on the front ; in one specimen from Utah the frontal markings are
TRANS. AM. ENT. SOC. XXII.
JULY. 1895.
252
CHARLES W. JOHNSON.
wanting. Thorax black, with thin yellowish pubescence; lateral stripe and two
small spots on the disc of the thorax green, this latter character is variable, and
may be wanting, or may be narrowly connected with humeri in some specimens,
or with the posterior angle in others, or with both humeri and posterior angles,
thus forming two irregular stripes ; pleurae green ; pectus brownish ; scutellum
totally green ; tips of the spines brack, motanotum black. Abdomen green,
marked with black as follows: first segment except the lateral margins; second
with a large T-shaped marking ; third with a large central triangle, laterally pro¬
tracted to the lateral margin ; fourth similar, except that the central area is
larger and more quadrate; anterior half of the fifth with a large central spot,
the lateral projections not quite reaching the margins; in other specimens the
markings on the third segment are keystone- or anvil-shaped, and contains two
small greenish spots.
Los Angeles County, California (Coquillett) ; Utah (Aldrich ;
Denver, Col. (E. V. Beales) ; Texas (T. E. Hood, Boston, Soc. Nat.
Hist.) ; Wallace County, Kansas (F. H. Snow) ; Lincoln, Neb.,
July (Univ. Neb.); Algonquin, Ill. (Dr. W. A. Nason); Elkhart,
Ind. (J. R. Weith); Constantine, Mich. (U. S. Nat. Mus.).
An 0, megacephala was described by Olivier (Ency. Meth. 432,
viii) from Egypt; 1 therefore adopt the second name given by Loew.
Odonlomy in varipes Loew.
Odontomyia varipex Loew, Centur. vi, 21 ; Day, Proc. Acad. Nat. Sci. Pliila.
1882, 84.
Length % 12 mm. — Face green, vertical triangle black, ocelli yellowish, ver¬
tical angles green, frontal triangle minute, black ; first two joints of the antennae
cylindrical, equal, reddish (third joint in the type specimen wanting) ; proboscis
light yellow, labelli black. Thorax black, yellow pile; pleurae, posterior angles
and scutellum green ; base of the latter with a triangular black spot, spines short,
pectus black. Abdomen green, with an irregular dorsal stripe of black having
the following characteristics on each segment: first except the posterior angles :
second keystone-shaped, widest at the anterior margin ; third somewhat wider
than the second, slightly contracted in the middle, and attenuated along the an¬
terior margin to the sides; fourth similar but slightly wider: fifth except a nar¬
row lateral and posterior margin; venter wholly green. Femora yellow, outer
half of the anterior, outer third of the middle and tip of the posterior femora,
reddish; base of the tibiae yellow: outer half of the tibiae and tarsi reddish,
brownish black at the extremities. Wings pure hyaline, veins yellow; third
longitudinal vein forked, discal cell emits three equal veins.
Carolina (Loew).
The above description is based on the type specimen. The original
description, describing the abdomen black with green markings, 1
have reversed, as this belongs to the group in which green predomi¬
nates. It is closely related to Odontomyia binotata, but the head is
smaller, the spines of the scutellum much shorter and blunt, legs
darker, and the abdominal markings much different that the male
of that species.
NORTH AMERICAN DIPTERA.
253
Ortontoinyia rufipes Loew.
Odontomyia rufipes Loew, Ceutur. vi, 25, % .
Odontomyia scalaris Loew, Cental-, vi, 26, 9 •
Length ^,11 mm. — Head totally black ; first two joints of the antennae brown¬
ish black, subequal (third in the specimen described wanting). Face moderately
prominent, convex, obtusely carinate, with whitish pile, proboscis black. Thorax
totally black, with long whitish pile; on the pleurae white and shaggy; scutellum
yellow, base black. Abdomen yellow, with a medial stripe, on the anterior mar¬
gin of the second segment dilated, the following segments with a single basal
band wholly black ; venter totally yellow. Legs reddish yellow ; posterior tarsi
in this specimen wanting. Wings pure hyaline, vein bright yellow ; third longi¬
tudinal vein branched, discal cell emits two veins.
Length 9 H mm. — Head yellow, occipital disc and an irregular vertical spot
black ; first two joints of the antennae brownish black, subequal (third wanting).
Face moderately prominent, convex, very obtusely carinate, pile white, medial
stripe black ; dorsal portion of the thorax black, golden pubescence, lateral mar¬
gins with a wide border that extends from the humeri to the suture and the pos¬
terior angles yellow ; pleurae yellow, marked with black, pile white, pectus and
metanotum black ; scutellum totally yellow. Abdomen yellow, with a medial
stripe ; second and the following segments with a single anterior band of black ;
venter totally yellow. Legs reddish yellow ; apex of the posterior tarsi brown.
Wings pure hyaline, veins bright yellow, third longitudinal vein branched, discal
cell emits two veins.
Cuba (Gundlach) Loew.
That these two descriptions apply to the same species as Mr. Loew
suo-g-ests, there is not the slightest doubt.
oo ' o
Odontomyia cincta Olivier.
Odontomyia cincta Oliv., Encycl. Meth. viii, 432, 3 ; Macquart, Dipt. Exot. i,
2, 189 ; Day, Proc. Acad. Nat. Sci. Phila. 1882, 87.
Stratiomys cincta Walker, List, etc., v, 39.
Odontomyia extremis Day, Proc. Acad. Nat. Sci. Phila. 1882, 80; Williston.
Can. Ent. xvii, 128.
Length 'J, 9 12 mm. . — Face and frontal triangle light green, with whitish
pile; vertical triangles and the proboscis black, ocelli yellow. Antennae red, tip
black. Thorax black with yellowish pile; lateral margins, scutellum and pleurae
green ; basal centre of the scutellum black, spines yellow, tips brown, pectus
black. Abdomen green, with a wide, irregular dorsal line of black, contracted at
the posterior edge of the second and third segments, forming a triangular, or a
keystone-shaped marking, that on the fourth square, and that on the fifth not
reaching the posterior margin, and laterally attenuated to the margin ; venter
green. Legs yellow, three terminal joints of the tarsi. Wings hyaline, veins
yellow ; discal cell emits three veins, third longitudinal vein branched.
9 . — Face, front and occiput green, shining ; frontal orbits with a prominent
black spot; ocellar triangle black; in some specimens the black is laterally ex¬
tended, and iu one this is narrowly connected with the spots on the frontal orbits ;
the lateral strip of the thorax wider than in the male, and the tomentum golden
yellow; scutellum totally green. Abdomen green, with a series of black dorsal
triangles : in some there are laterally extended on the second and third segments
TRANS. AM. ENT. SOC. XXII.
JULY. 1895.
254
CHARLES W. JOHNSON.
so as to form a band occupying one-half to two-thirds the anterior portion and
usually narrowly reaching the posterior margin ; band on the fifth segment occu¬
pying the anterior half. In other respects the color markings are the same as
those of the male.
St. Augustine, Flu., March 15 ; Cape May, N. J., June 14 ; Brook¬
ings, S. 1). (Aldrich); Connecticut (Williston); Douglas County,
Kansas, June; Buffalo, N. Y. (Univ. Kans.) ; Algonquin, Ill. 1 1 )r.
Nason); West Point, Neb., June (Univ. Neb.).
I have recently received from Mr. V. H. Lowe, of the New York
Agricultural Experiment Station, a 9 specimen measuring only 8
mm. ; it was taken at the Agricultural College, Michigan, June 17.
Odontomyia dorsalis Fabricius (PI. iv, fig. 9).
Stratiomys dorsalis Fabr., Syst. Anti. 82, 20; Wiedemann, Auss. Zw. ii, 66.
Odontomyia dorsalis (Fabr.) Osten Sacken, Catl. 47 (non 0. dorsalis White,
Zool. Voy. Erebus and Terror).
Length 9 9 mm.; wing 8 mm. — Face, front, vertex and occiput, an obscure
greenish yellow; translucent; minute yellowish pubescence, a spot on each side
of the an ten me extending to the orbits ; a transverse line obscurely interrupted
on the front and a spot on each side of the ocelli brownish ; ocellar triangle black,
ocelli yellow. Antennae and legs reddish brown, proboscis black. Thorax black,
with short golden pubescence ; a wide lateral line, pleurae, scutellum and spines,
yellow ; pectus black, halteres green. Abdomen dingy yellow, with an irregular,
blackish, dorsal line, consisting of a series of markings that are dilated at the
anterior, and contracted at the posterior margins of the second, third and fourth
segments; on the fifth it is only a small spot at the anterior margin ; venter yel¬
lowish. Legs red, the last two joiuts of the tarsi brown. Wings hyaline, veins
light yellow ; discal cell emits three strong veins; third longitudinal vein
branched.
One specimen, San Domingo (Frazer), University of Kansas coll.
This specimen agrees so well with Fabricius’ brief description,
that I feel very confident of its identification. Wiedemann gives its
habitat as “South America,” but Fabricius has “in America;
Insulis.”
Odont oinyia iiisrqnnlis Loew.
Odontomyia inieqnalis Loew, Centura vi, 24.
Length % 54. 9 liu. : wing ^ 4J, 9 32 lin. . — Head black, middle of
the lower part of the face, and from there to the edge of the anterior angle, light
yellow. Antennse black ; first and second joints blackish, underside brown, pro¬
boscis black, palpi light yellow. Thorax black, pile yellow ; pleurae wTith two
yellow spots, one irregular above the anterior coxse ; the other round in front of
the wing; scutellum black, broad apical margin and very short spines greenish
yellow, black at the extreme tip. Abdomen black ; posterior margin of the sec¬
ond, third and fourth segments broadly interrupted, greenish yellow; on the
second segment the markings are dilated and subtriangular, on the fourth some¬
what obsolete; venter wholly greenish yellow. Legs yellow, tarsi from the apex
NORTH AMERICAN DIPTERA.
255
of the first joint brownish black, the base of the second is, however, lighter.
Wings pure hyaline, veins decidedly yellowish, third longitudinal vein in one
simple, in the other with an obsolete rudimentary branch, discoidal cell emits
two veins.
9 . — Head yellow : occiput except the orbits black, front with four black spots,
upper spots together with the minute black spot on the vertex confluent; thus
also is formed a band on each side, which touches the margin of the eyes ; the
lower spots are obliquely drawn out, subcontiguous in the middle of the front
and touching on each side the margin of the eyes. Face moderately prominent,
convex, and adorned with a triangular black spot, proboscis black ; palpi light
yellow ; dorsum of the thorax black, with a slightly golden tomentum, posterior
angles greenish yellow ; pleurae greenish yellow, with a large black spot, which
is connected with the black of the pectus; scutellum black, apical margin broad,
spines small, greenish yellow : the extreme points black. Abdomen black, mar¬
gins of the segments separate ; lateral margins equal, posterior margins subequal,
greenish yellow; venter totally greenish yellow. Legs yellowish (tarsi in the
specimen described wanting). Wing pure hyaline, veins strongly yellowish, third
longitudinal vein branched, discoidal cell emits two veins, fourth near the base
very thin.
“Fort Resolution,” Hudson’s Bay Territory (Kennicot), Loew.
Orion toinyiu artuata Loew (PI. iii, fig. 35; PI. iv, figs. 7, 8).
Odontomyia arcuata Loew, Centur. x, 4 ; Day. Proc. Acad. Nat. Sci. Pliila.
1882, 80.
Length % 9 9-11 mm. 'J, . — Face and inferior orbits light yellow ; pile white,
an obscure transverse brownish line above the oral margin : fi'ontal and vertical
triangles black, ocelli yellow, proboscis black ; first and second joints of the an¬
tennae red ; third dark brown, and narrowly annulated with black : dorsum of
the thorax shining black ; pile yellow, sparse, but long and dense on the sides ;
posterior angles obscure brown, pleurae greenish yellow, pectus black ; scutellum
greenish yellow ; base black, spines yellow, tip brown. Abdomen green, with an
irregular black dorsal stripe, having the following contour: greatly contracted at
the margins of the second and third ; third and fourth, and the fourth and fifth
segments, mark on the fourth segment somewhat wider than those on the second
and third ; mark on the fifth only extending to the centre of the segment, later¬
ally attenuated; venter green. Legs yellow, tip of the first and the rest of the
joints of the tarsi brown. Wings pure hyaline, veins light yellow, discal cell
emits two strong veins, the other indicated only by an obsolete angle ; third lon¬
gitudinal vein branched.
9 • — Face, front, vertex and occiput yellow, pile light yellow ; vertex and front
with a transverse band of black, in the former not reaching the orbits, and some¬
times narrowly extending in the middle over the vertical angle, in the latter
sometimes narrowly divided in the middle and the frontal fossa is sometimes
black, connecting the frontal and vertical bands. In some specimens there is a
blackish, transverse marking above the oral margin, and in one specimen the
facial prominence and a small dot on each side is also blackish ; ocelli yellow,
proboscis black; first and second joints of the antennas red ; third dark brown.
Thorax black, with short, decumbent, golden-yellow pubescence, longer on the
sides ; posterior angles, pleurae, and in one specimen a small spot at the suture,
TRANS. AM. ENT. SOC. XXII.
JULY, 1895.
256
CHARLES W. JOHNSON.
greenish yellow; pectus black ; scutellum yellow, base narrowly black. Abdomen
greenish yellow : second, third, fourth and fifth segments with a wide, transverse,
black band, which does not reach the lateral or posterior margins ; posterior edge
of the bands on the second, third and fourth segments biarcuate; in some speci¬
mens this character is obsolete, or arcuated on the fourth. In the ten specimens
before me this character predominates, although it is not typical ; in one specimen
which closely resembles the type the marking on the second segment is triangular,
and ou the other segments the biarcuate edge is wanting, and the anterior edge
does not quite reach the margin of the segment towards the lateral portions
Six females, Los Angeles County, California, and one male San
Bernardino Mountains, California, July 28 (Coquillett) ; Texas
(Henshaw, coll. L. E. Hood); Denver, Col. (Beales); Rapid City,
S. D. ( Aldrich ) ; Reno, N ev. (Hillman).
The male from South Dakota differs in having the the upper por¬
tion of the face and the pleura; black ; still it undoubtedly belongs
to this species.
0 June (Univ. Neb.).
Odontomyia virgo Wiedemann (PI. iv, figs. 31, 32, 33, 34, 35).
Odontomyia, rirgo Wied., Auss. Zw. ii, 69, 13.
Stratiomys virgo Walker, List, etc., v, 39.
Odontomyia plebeja Loew, Centur. x, 5.
Odontomyia nigra Day, Proc. Acad. Nat. Sci. Phila. 1882, 75.
Odontomyia paron Walker, List, etc., iii, 536.
Length % 9 7 TO mm. ; wing 6-8 mm. % . — Face black, shining, with whitish
pile; ocellar triangular black, ocelli brownish. Antennae reddish, terminal joint
dark brown. Thorax black, covered with yellowish pubescence, longest on the
NORTH AMERICAN DIPTERA.
263
pleurae ; scutellum black, spines yellow ; kalteres green. Abdomen varies from a
bright green to greenish yellow, or bright yellow, with an irregular black dorsal
stripe, forming on the second, third and fourth segments a series of keystone-
shaped markings, that on the fourth being usually the largest, stripe ending with
a triangular spot at the base of the fifth segment; venter green. Legs yellow.
Wings hyaline, veins yellow, discal cell emits two veins; third longitudinal vein
simple.
9 . — Face, front and vertex broad, shining black, with white pile, more con¬
spicuous in patches on the orbits; inferior orbits yellow; occiput with thick
whitish pubescence. Thorax black, with short yellowish white pubescence ; the
abdominal stripe usually wider than in the male, so that the green on the third,
fourth and fifth segments consists only of a narrow lateral, and on the fifth a
posterior margin.
Southeastern Pennsylvania and southern New Jersey, June and
July, common; Franconia, N. II. (Mrs. Slosson); Connecticut and
Virginia, June 13 (Williston) ; Algonquin, Ill. (Dr. Nason) ; Custer,
S. D. (Aldrich); West Point, Neb., June 24 (Univ. Neb.); Kansas
(E. W. Guilding) Day; Georgia (Wiedemann); southern Georgia
(Morrison); Colorado (Riley); Texas (J. B. Smith); Springfield,
Mass. (Dimmock); Agricultural College, Michigan (Lowe); Mur-
freesborough, N. C., June 8.
The above description is based on a series of over forty specimens.
Between the smaller specimen determined as 0. virgo by Loew, and
a somewhat larger one, the type of his 0. plebeja, I cannot draw
the line. The color of the antennae are variable, the third joint is
sometimes reddish, except the tip ; in others it is wholly dark brown,
while others show intermediate conditions.
0 ia ruhricoriiis Macquart.
Odontomyia rnbricornis Macquart, Dipt. Exot. Kuppl. i, 53.
Antennae testaceous, apes brown. Thorax bluish black. Abdomen white,
dorsal stripe black ; posterior legs brown, middle of the femora black.
Length 2 A 1. % . — Near to O. riridida. Face black, shining; front black, with
lines. Antennae dark testaceous, tips black. Thorax bluish black, with a thin
white pubescence; margin of the scutellum and spines yellow. Abdomen yel
lowish white; first, second and third segments with a dorsal stripe of black, en
larged at the two extremities ; stripe much more wider on the fourth and fifth
segments, but not reaching the sides ; venter white, a little brown at the tips of
the tibiae and the joints of the tarsi. Wings hyaline.
Merida, Yucatan.
Odoulomyia li mbipennis Macquart.
Odontomyia Hmbipennis Macq., Dipt. Exot. Suppl. ii, 30, 24.
Straticmys hmbipennis Walker, List, etc., v, 39.
“ The label in Macquart’s hand-writing in Mr. Bigot’s collection
bears America with a query. The query is omitted in the Dipt.
Exot. I doubt that this is a North American species” (Osten Sacken).
Odoiiloinyia alboinaculata Macquart.
Odontomyia albomacnlata Macquart, Dipt. Exot. i, 1, 189.
Ktratiomys alboinaculata Walker, List, etc., v, 40.
Length 41 1. 9 • — Thorax black, scutellum red. Abdomen dark blue, macu
lated with white. Legs black, first joint of the tarsi white. Face even, inclined,
tawnv, pubescence whitish ; front narrow, tawny, back of head tawny. Antennae
tawny, first joint brown, as well as the last division of the third. Thorax black,
with a line of whitish pubescence; spine of the scutellum yellow. Abdomen
blackish blue, each segment with a lateral whitish spot and pubescence; under¬
side of the body whitish pubescence. Legs black, knees tawny; halteres white.
Wings grayish, veins brown, with five posterior cells.
Port au Prince, San Domingo [Hayti], (Macquart).
Odontomyia vicina Macquart.
Odontomyia vicina Macquart, Dipt. Exot. i, 188.
Stratiomys vicina Walker, List, etc., v, 40.
Length 3 1. 9 — Black. Abdomen green, with a narrow black dorsal stripe,
the apex dilated. Resembles 0. yiridis ; the first two joints of the an ten life
brownish, testaceous, third imperfect : the black stripe of the abdomen narrow
on the first three segments, wide on the fourth.
Cuba. Collection of M. Serville (Macquart).
NORTH AMERICAN DTl’TERA. .
277
0. vittat us Aube. Plates v, vi, figs. 1, la and 16. — Size large, regularly oval,
feebly convex; surface black, very shining, obsoletely punctate, striae faint, more
evident at sides ; a submarginal bronze vitta extends across the thorax and nearly
to apex of the elytra; lateral margins of elytra not sinuate, depressions not deep,
sutural angles broadly rounded ; under surface dark brown or pitchy, middle and
posterior tibiae and tarsi paler; anterior tibiae sinuate, apex truncate, or very
slightly oblique, exterior apical angle rectangular; femora without tooth, punc¬
tures (six 'J, , seven 9 ) not deep or closely placed. Length 12-15.5 mm. ; breadth
8 10 mm.
Hub. — North, Middle and South Atlantic States, Indian Territory,
Mexico (one specimen U. S. Nat. Mus.).
Readily recognized on account of its large size, very shining ap¬
pearance and the bronze vitta.
NORTH AMERICAN COLEOPTERA.
283
I>. Niiblineatiis Chev. Pis. 5-6, figs. 2, 2 a and 26. — Size large, oval, rather
strongly convex ; surface opaque, finely granulate, color dark olive, punctures
scarcely visible, strite well defined ; lateral margins of elytra feebly sinuate, de¬
pressions scarcely evident in . slightly more so in 9 > apices truncate, of 9
slightly sinuate, sutural angles feebly rounded ; under surface black, middle and
posterior legs pitchy brown ; anterior tibia1 strongly sinuate, apex oblique, exte¬
rior apical angle obtuse ; femora of male with a sharp, somewhat oblique tooth,
setigerous punctures (9 Si It* 9) deep and rather closely placed. Length 14 15
mm. ; breadth 8-9 mm.
/Tub. — Arizona, southward to Nicaragua.
On account of its peculiar color and large size this species will be
readily recognized. As mentioned in the introduction, this species
has a peculiar secondary sexual character in the female. The pe¬
nultimate segment of the abdomen is quite strongly sinuate, giving
it a lobed appearance, and the ultimate segment has an evident im¬
pression at tip.
I>. emai'giuatus Say. Pis. 5, 6, figs. 3, 3 a and 36. — Size moderate, rather
broadly oval, moderately convex ; surface black, not very shining, somewhat
bronzed, punctures and stride faint; lateral margins of elytra in 'J, not, in 9
slightly sinuate at exterior apical angles, depressions not deep, sutural angles
broadly rounded; undersurface black, very shining and slightly bronzed ; mid¬
dle and posterior legs, tip of ultimate and sides of abdominal segments testaceous :
anterior tibige cylindrical at basal third, then rather suddenly broadened on inner
margin in , on outer margin in 9 > and continued nearly parallel to apex ; apex
truncate, exterior apical angle rectangular; femora with a distinct, sharp tooth,
punctures (7 ^ , 8 9) rather deep, not closely placed. Length 10-11 mm.;
breadth 6-7 mm.
Hub. — North and Middle Atlantic States ; Virginia.
The figure on the plate illustrates an irregular punctuation.
I>. <‘a rol i ii ns Lee. Pis. 5, 6, figs. 4, 4 a and 46. — Size small, rather narrowly
ovate, moderately convex : surface black, sometimes bronzed, not very shining,
punctures and strise faint ; lateral margins of elytra not sinuate in y , in 9 mod¬
erately sinuate, impressions scarcely evident, the flattening of the margins ex¬
tending nearly or quite to the suture, sutural angles feebly rounded, apices finely
serrulate; undersurface black, shining, somewhat bronzed, middle and posterior
tibiae and tarsi dark testaceous; femora brown ; anterior tibiae cylindrical at basal
third, then rather suddenly broadened on inner margin in % , on outer margin
in 9 - and continued nearly parallel to apex ; apex truncate, exterior apical angle
acute; femora with a small tooth, frequently scarcely more than an abrupt ter¬
mination of the ridge on underside, setigerous punctures (7 'J, , 8 9) 11 °t deep,
rather closely placed. Length 9-10 mm. ; breadth 5.5 6 mm.
Hub. — South Atlantic States; Louisiana, Texas.
I cannot agree with Dr. Regimbart and others that this species
and emarginatus are identical. While I cannot recognize the apices
TEANS. AM. ENT. SOC. XXII.
AUGUST, 1895. •
284
CHRIS. II. ROBERTS.
of the elytra, as reflexed, as described by Dr. LeConte, the flatten¬
ing of the margin continuing to the suture gives them that appear¬
ance to a certain degree.
In emarginatus the femoral tooth is distinct and strong; in caro-
linus weak, often feeble ; sutural angles in emarginatus rather
broadly rounded ; in carol inns feebly so ; apices of elytra in emar¬
ginatus smooth ; in Carolina s finely serrulate. This serration is very
fine, and to see it requires care, a proper position of the specimen,
and that it be clean. An examination of a hundred or more speci¬
mens found the character constant ; carolinus is smaller and less
broadly oval, and the male genitalia are quite unlike.
Group B.
I>. lioruii n. sp. Pis. 5, 6, figs. 5, 5 a and 56. — Size moderate, elongate oval,
not strongly convex ; surface black, not polished, somewhat shining or bronzed,
frequently opaque, striae and punctures feebly marked, more evident in opaque
specimens: lateral margins of elytra in £ not sinuate, in J strongly sinuate at
exterior apical angles, depressions evident, stronger in 9 > sutural angles in %
rounded, in 9 produced, and with the suture strongly dehiscent ; undersurface
dark brown, shining, slightly bronzed ; legs dark testaceous: anterior tibiae regu¬
larly widening from base to apex : apex oblique, exterior apical angle obtuse, but
not rounded; femora without tooth, punctures (6 %. 7 9) not deep or closely
placed. Length 10-11 mm.: breadth 5.5-6 mm.
Hah. — North and Middle Atlantic States; Texas. Described
from four males and four females.
This species has been mixed with a ssimilis, but the rounded su¬
tural angles of the elytra will readily separate the male. The female
is not so easily pleased, but the strongly dehiscent apices of the elytra
and obtuse angulation of the tibiae with care will determine it.
1 take pleasure in naming this species after Dr. G. H. Horn, as a
slight recognition of many favors and kindly interest.
Group C.
I>. nigrior n. sp. Pis. 5, 6, figs. 6, 6a and 66. — Size moderate, regularly
oval, rather convex ; surface black, shilling, slightly bronzed : striae and punctures
evident; lateral margins of elytra in % slightly sinuate at exterior apical angles,
sinuate at apex, sutural angles evident, produced ; in 9 lateral and apical mar¬
gins strongly sinuate, sutural angles strongly produced ; depressions deep, apices
strongly depressed, not dehiscent at suture ; under surface black, shining, middle
and posterior tibite and tarsi brownish yellow ; femora brown ; anterior tibia-
regularly widening from base to apex ; apex truncate, exterior apical angle acute,
evidently produced; femora without tooth, punctures (9 ^ , 10 9) deep and
closely placed. Length 10-12 mm.; breadth 6-7 min.
NORTH AMERICAN COLEOPTERA.
285
Hub. — North and Middle Atlantic States ; Virginia. Described
from four males and four females.
Resembles rather closely hornii and assimilis in its general ap¬
pearance, but is larger and proportionately broader than either. It
may be separated from the former by the produced exterior apical
angles of the anterior tibiae. It differs also in this respect from as¬
similis, and the apices of elytra are strongly depressed and not de¬
hiscent at suture as in that species.
1>. assimilis Aube. Pis. 5, 6, figs. 7, 7 dis., 7 a and 76. — Size moderate, ob¬
long oval, distinctly convex ; surface black, strongly bronzed, not deeply punc¬
tured ; strife usually feebly marked ; lateral margins of elytra in % not sinuate,
apices feebly sinuate, slightly dehiscent at suture and not strongly depressed,
sutural angles feebly produced ; in 9 the lateral margins of the elytra and apices
more strongly sinuate and dehiscent at suture, sutural angles produced ; under
surface black, more or less tinged with brown, very shining, middle and posterior
legs testaceous ; anterior tibiae regularly widening from base to apex ; apex trun¬
cate, exterior apical angle rectangular, scarcely or not at all produced : femora
without tooth, punctures (7 , 8 9 ) shallow and not closely placed. Length
10-11 mm. ; breadth 5.5-6 mm.
Hub. — North, Middle and South Atlantic States; New Mexico,
Colorado, Minnesota, Michigan and Dakota.
As remarked under those species, hornii and nigrior have been
mixed with assimilis; their more evident differences may be sum¬
marized as follows: Anterior tibice : in hornii with apex oblique,
exterior angle obtuse ; nigrior apex truncate, exterior angle acute
and evidently produced ; assimilis apex truncate, exterior angle rect¬
angular and scarcely or not at all produced. Sutural angles: in
hornii % rounded, 9 produced, and with the suture strongly dehis¬
cent ; in nigrior S and 9 produced, apices depressed and not de¬
hiscent at suture ; in assimilis $ and 9 produced, apices feebly
dehiscent at suture. Setigerous femoral punctures: in hornii few
(6 I) , 7 9 )> not deep or closely placed ; in nigrior numerous (9 % ,
10 9 ), deep and closely placed; in assimilis moderate (7 % , 8 9 ),
shallow and not closely placed. The male genitalia are entirely
unlike, as shown by the figures on the plate.
I), pi'odiictiis n. sp. Pis. 5, 6, figs. 8, 8« and 86. — Size small, ovate, not
very convex; surface shining, strife faint, punctures quite evident; 'J, lateral
margins of elytra not sinuate, apices slightly sinuate and dehiscent at suture,
depressions not strongly marked, sutural angles produced ; 9 lateral and apical
strongly and irregularly sinuate, more dehiscent at suture, depressions deeper
and sutural angles more sharply produced ; under surface black, strongly bronzed
and shining, middle and posterior tibiae and tarsi and last abdominal segment
TRANS. AM. ENT. SOC. XXII.
AUGUST, 1895.
286
CHRIS. H. ROBERTS.
rufous; anterior tibia* cylindrical at basal third, then rather suddenly broadened
on inner margin in £ , on outer in 9 • and continuing nearly parallel to apex ;
apex truncate, exterior angle acute, produced ; femora with a small, sharp tooth,
the punctures (6 ^ , 7 9) being rather large and deep. Length 9.5 — 10 mm.;
breadth 5.5-6 mm.
Hab. — Texas. Described from two males and two females.
Resembling closely aarolinus, but quite distinct on account of the
sutural angles of the elytra being evidently produced, and the dif¬
ferences in the male genitalia.
D. serrulatiis Lee. Pis. 5, 6, figs. 9, 9a and 95.— Size moderate to small.
Very convex, strongly narrowed in front ; surface polished black with purplish
reflection, shining, not bronzed, punctures and striae obliterated ; lateral margins
of elytra slightly sinuate at exterior apical angles, apices truncate, sutural angles
evident, depressions moderate, apices distinctly serrate ; under surface chestnut-
brown, shining; anterior tibiae cylindrical at basal third, then rather suddenly
broadened on inner margin in % , on outer in 9 » and continuing nearly parallel
to apex; apex truncate; exterior angle obtuse, rounded : femora with a distinct,
acute tooth, punctures (9 % , 10 9) moderately deep and closely placed. Length
9 12 mm. ; breadth 5-7 mm.
Hab. — All the specimens I have seen, about one hundred, are
from Florida.
A very distinct species and readily recognized. While the varia¬
tion in size is great, it keeps remarkably true to form.
a ual is Reg. Pis. 5, 6, figs. 10, 10a and 105. — Size moderate, broadly oval,
narrowed in front; surface shining, not strongly bronzed, stria* faint; ^ lateral
margins of the elytra slightly sinuate at exterior apical angle, apices feebly sinuate
and dehiscent at suture, sutural angles evident ; 9 margins more sinuate, apices
more dehiscent at suture and sutural angles somewhat produced; depressions not
deep, apices finely serrate : under surface dark brown, last segment and middle
and posterior femora rufous, tibise and tarsi testaceous ; anterior tibise cylindrical
at basal third, then rather suddenly broadened on inner margin in ^ , on outer
in 9 > and continuing nearly parallel to apex ; apex truncate, exterior apical angle
obtuse, rounded ; femora with a moderate tooth, setigerous punctures (8 % , 9 9 )
deep and closely placed. Length 11-11.5 mm. ; breadth 6-6.5 mm.
Hab. — Texas.
Dr. Regimbart compares this species with emargmatus and “ ameri-
canux” (assimilis ?), but to me it seems more closely related to serru¬
late. It is, however, not so strongly convex as that species, the
surface is bronzed, not polished black, the apices of elytra are sinuate
and dehiscent at suture, while this is not the case with serrulatus ;
the femoral tooth is weaker, the punctures not so numerous, and the
serration of the elytra is finer. Dr. Regimbart overlooked this ser¬
ration, and, while I have not seen his types, his description leaves no
NORTH AMERICAN COLEOPTERA.
287
doubt as to the determination of my specimens, of which I have
examined over twenty.
I>. discolor Aube. Pis. 5, 6. figs. 11, 11a and lift. — Size moderately large,
oblong oval, somewhat convex, narrowed in front; surface metallic shining, very
rarely black, punctures and stripe quite distinct; lateral margins of elytra at ex¬
terior apical angles and apices, sinuate; depressions very feeble, sutural angles
weakly produced ; under surface and legs testaceous to straw color : anterior tibipe
cylindrical at basal portion and gradually broadened to apex ; apex slightly ob¬
lique, exterior angle rectangular, produced : femora with a fairly strong trian¬
gular tooth, setigerous punctures (6 %,7 9 ) not deep or closely placed. Length
10.5-13 mm. ; breadth 6-7 mm.
I lab. — North and Middle Atlantic States ; North and South
Carolina, Mexico.
It is rather remarkable that the femoral tooth of the male in this
species has been so long overlooked. This is probably due to the
generally light color of the under surface and legs, and to the habit
of the species of Dineutes of folding the legs close to the body.
Unless the legs are extended the tooth is concealed.
D. ;i li g list ns Lee. Pis. 5, 6, figs. 12, 12a and 126. — Size small, narrowly
ovate, strongly convex, narrowed in front; surface black polished, stripe usually
entirely obliterated, at most very faint, punctures evident; lateral margins not
sinuate, depressions at suture wanting, at exterior apical angles distinct; sutural
angles somewhat produced ; entire under surface and legs rufous: anterior tibipe
cylindrical at basal portion and gradually broadened to apex ; apex strongly ob¬
lique, exterior apical angles acute and sharply produced ; femora with a minute
tooth, setigerous punctures (4 ^ , 5 9) shallow and well separated. Length 9-
10.5 mm. ; breadth 4. 5-5.5 mm.
Hub. — Virginia, Florida.
This species is closely related to discolor , but I am convinced it is
a distinct species. It is smaller, the largest specimens I have seen
being no larger than the smallest discolor, is narrowly ovate, not so
abruptly narrowed in front and more strongly convex. In angustus
the surface is polished black, in discolor metallic shining ; in angustus
the striae are usually obliterated, never more than very faint ; in
discolor they are distinct ; in angustus the lateral margins at exterior
apical angles are not sinuate, while in discolor they are evidently,
though not strongly so. There is one less puncture on the femora
in angustus, and they are more widely separated. While color is
not usually a very reliable character, it is sometimes of importance,
and in discolor I have never seen the entire under surface and legs
of a rufous color, which is constant in angustus. The nude genitalia
are very close, being slightly more slender in angustus.
TEANS. AM. ENT. SOC. XXII.
AUGUST. 1895.
288
CHRIS. II. ROBERTS.
The shape of the labrum in anc/ustm, which is more prominent
than in any other species in the genus, reminds one strongly of
Gyretes.
EXPLANATION OF PLATES V & VI.
The numbers refer to the same species throughout; a, refers to the apices of
elytra ; b, to the genitalia of 'J, .
Fig.
1. — Di nettles vittat us.
2. — “ sublineatus.
emarginatm.
carolinus.
hornii.
nigrior.
assimilis.
7 bis. “ “ a little distorted by pressure.
8. — “ productus.
9. — “ serrulatus.
lO.-
ll—
analis.
discolor.
12. — “ angustus.
Trans. Am. Ent. Soc. Vol. XXII.
PI. V.
NORTH AMERICAN HYMENOPTERA.
289
DESCRIPTIONS OF NEW HYMENOPTERA.
RY T. ]>. A. COCKERELL.
(With Notes by W. J. Fox.)
Pilot opsis pirns sp. nov. ^ 7-10 mm. long, anterior wing 6-7 mm. — Dark
honey color; antennae fulvous. Legs variable, entirely pale ochreous, or dirty
straw color, or the four hindmost femora largely blackened. Wings smoky hya¬
line, with a large fuscous cloud beyond the marginal cell ; nervures partly brown and
partly colorless, stigma dark brown ; sculpture ordinary ; pleura and dorsum of
prothorax closely and deeply punctured ; mesothorax strongly, lint not so closely
punctured ; metathorax reticulate. Abdomen with first segment finely reticulate,
second with numerous broadened shallow punctures; the remaining segments
smooth and shiny, becoming punctured below on their distal margins; first joint
of flagellum a little longer than second. Head round seen from in front, with
the eyes large and black ; metathorax rapidly descending, but rounded. Abdo¬
men elongate; the first segment with its anterior half very narrow, suddenly
widening just before its middle to the bulbous posterior portion, which is rapidly
narrowed at its junction with the second segment; genitalia projecting in the
form of a single short spine, which is slightly curved upwards. Very slightly more
than half of the stigma enclosed in marginal cell : marginal cell a little shorter than
stigma, abruptly truncate before and, behind; two submarginals only; the first long
and narrow, longer than stigma ; the second beneath the first, moderately small,
triangular, its inferior distal angle a little more than a right angle ; the single
recurrent nervure entering second submarginal before its middle.
Hab. — Santa Fe, New Mexico (Ckll. 1665, July 25, 1894, and
Ckll., 1775, beginning of August, 1894) ; Las Cruces, New Mexico
(E. O. Wooton, September, 1894); San Augustine, New Mexico
(Ckll. 2081, Aug. 28, 1894, and three others taken by Prof. Townsend
at same place and time) ; all taken at light. The San Augustine
specimens show the whole range of the variation in the color of the
legs.
The species allied to P. picus are in a considerable state of con¬
fusion, and it becomes necessary to enter into some detail in order
to make the exact position of the new form clear.
The supposed mellipes which (“ Ent. News,” 1894, p. 200) I
compared with P. territus, had been so named for me by Mr. Fox,
but it turned out that this was a mistake. Thereupon, after com¬
parison with the coll. Am. Ent. Soc. it was labeled albipes ; but
when I wrote Mr. Fox that I could not separate this so-called albipes
from nubecula, he examined the collection and discovered that the
TRANS. AM. ENT. SOC. XXII.
(37)
AUGUST, 1895.
T. D. A. COCKERELL.
290
types of albipes were missing, and that the specimens (from Colorado)
standing in their place were in fact nubecula. The original types
of albipes were from Nevada.
In the meanwhile Mr. Fox kindly sent a specimen of what he
considered true mellipes, from Arizona. This proved to be the same
as what I had labeled belfragei, an example having been taken by
Prof. Townsend at San Augustine, New Mexico, and another by
Miss J. Casad in the Mesilla Valley. Mr. Fox, being informed of
this, wrote that mellipes Blake, and belfragei Blake, were really the
same species; belfragei, having more than ten years priority, is the
correct name.
But we have, from San Augustine (Prof. Townsend) and the Me¬
silla Valley (Prof. Wooton), also another form, which flies with bel¬
fragei, and very exactly resembles it, except that it has a black
head. This, evidently, is P. melaniceps Blake, but I judge it to be
only a variety of belfragei, which Mr. Fox admits is perhaps the
#
case.
At Santa Fe I caught a Photopsis and sent it to Mr. Fox ; word
came back that it was P. no/comis, though small. I regret that I
did not study it, as I find among my Santa Fe Photopsis no no/comis,
but only pieus. However, that picas is distinct from no/comis cannot
be doubted.
Mr. Fox writes : “ the color of nolcornis varies ; but the species is
easily distinguished from those mentioned above fnubeeula, etc.] by
the shape of first abdominal segment, which is shorter and gradually
broadened from the base ; in the others it is suddenly dilated at about
the middle and is much longer. The width of this segment at apex
is variable in no/comis
P. pieus, on the other hand, has the first segment shaped like that
of nubecula. If pieus is held sideways, the abdomen, with the first
segment, suggest the body and head of a woodpecker, whence the
specific name. So also in nubecula, but the segment in pieus aver¬
ages slenderer.
The other type is illustrated by P. clara Bl., a Texas specimen,
of which I have from Mr. Fox. In this the abdomen, with first
segment, might be compared to the body and head of a vulture, in
the posture with the head depressed upon the shoulders.
Mr. Fox points out the little brushes of hair on the apices of ven¬
tral segments 4 and 5 in nubecula. These are entirely wanting in
pieus, which can also be distinguished from nubecula by its venation.
NORTH AMERICAN HYMENOPTERA.
291
A question remains as to a Ibipes. Mr. Fox suggests that it mav
perhaps be the same as nubecula, though Cresson does not mention
the abdominal brushes; or it may, he adds, be the new form picus.
It seems to me that in all probability albipes is a good species, and
I am sure it cannot be picus.
The picus-nubecula-belfragei group is recognized by the large fus¬
cous cloud, varying in intensity beyond the marginal cell. But
albipes is said to have the marginal cell itself with a fuscous cloud,
and nothing is said of any beyond. To further distinguish albipes
from picus are the three submarginal cells, picus having never more
than two.
The following table will serve to separate the species allied to
picus, which are found in the Mesilla Valley:
A. — Stigma inconspicuous, very pale yellowish ; two submarginal cells and two
recurrent nervures.
1. Head concolorous with body . P. belfrag-ei Blake.
2. Head black . P. belfrag-ei var. melaniceps (Blake).
B. — Stigma brown, conspicuous.
1. Three submarginal cells and two recurrent nervures- -P. nubecula Cress.
2. Two submarginal cells and only one recurrent nervure. . . - P. picus Ckll.
A word may be added to the generic name employed, Mr. Fox
having proposed to merge Photopsis in Sp luerop hthalma. To me,
genera are mainly a matter of convenience; and as Sp l uer op hthalma
is already inconveniently large, it seems suitable to distinguish from
it such a series as Photopsis, which is easily recognized by its peculiar
facies, and, moreover, differs from Spha&rop hthalma in being (like
Brachycistis) strictly nocturnal. It may be that some supposed spe¬
cies of Sphcerop hthalma are really females of Photopsis. Thus I
found a single specimen at Las Cruces, New Mexico, which Mr. Fox
tells me is Sphcerop hthalma marpesia Bl., though small. To me it
appears to be the female of Photopsis concolor, which is common in
the same vicinity. But, as Mr. Fox observes, there is no way of
proving this at present, and S. marpesia must be held distinct.
Brachycistis perpunctatus n. sp. £ .-Nearly 6 mm. long, perfectly
black, except the dark brown antennae and tarsi, the ferruginous mandibles, and
the lateral margins of the dorsal abdominal segments shining ferruginous in cer¬
tain lights; the tegulae are shining black; the large stigma is black, the veins
dark brown, the wings quite clear. Antennae long, first and second joints of
flagellum practically equal, the second perhaps a little the longer. Head, thorax
and abdomen shining, with sparse whitish hairs, most perceptible, on the abdomen :
the whole body surface is rather sparsely, but very strongly punctate, the punc¬
tures on the mesothorax being very large ; the first abdominal segment is large,
TKANS. AM. ENT. SOC. XXII.
AUGUST, 1895.
292
T. D. A. COCKERELL.
high,' with its suture with the second constricted ; viewed from the side the shape
of the first segment may be compared to that of the head of a young chicken ;
the stigma is, if anything, a little nearer to the base than to the apex of the
wing; the marginal cell is excessively narrow and short, and does not. reach the
costal margin ; there are only two submarginals, the first long, the second small
and triangular, but still larger than the marginal; it receives the recurrent ner-
vnre much before its middle; the intermediate tibiae are spinose at tip, but there
is only one spur, properly speaking: the abdomen is terminated by a single fer¬
ruginous spine, curving upwards; the eyes are not precisely round, but suboval
Hub. — “ Found drowned” in the college horse-trough, Las Cruces,
New Mexico, 1895, one specimen. This is clearly a Brachyeistis,
though there is no trace of a third submarginal cell. It is by this
character and the black tegulse, that it will be known from B. atratus
(Blake), which it evidently much resembles.
This year, at Las Cruces, B. elegantulus has been taken in May,
and B. glabrellus in April and June.
Oxybelus sparidcus n. sp. — Male about 5.5 mm. long, strongly and
densely punctured ; black with yellow markings ; silvery pubescence on cheeks
and face; protliorax carinate; scutellum with an obscure longitudinal keel;
squama large, rounded, subovate, not pointed as in emarginatus, but having a
small and easily-overlooked lateral spine; spine broad, deeply emarginate, the
emargination forming a little less than a right angle ; pleurae with minute, op¬
pressed, silvery hairs: first segment of abdomen deeply longitudinally sulcate ;
apex of abdomen roundly emarginate. Antennae dark brown, paler beneath ;
mandibles yellow with black tips ; superior border of prothorax very pale yellow ;
tegnlae and spine rufous; squamae and an oblique spot anterior to each, yellow;
abdominal bands yellow, more or less interrupted in the middle; last segment
rufous; femora black, anterior and middle femora with silvery pubescence and
their distal ends yellow: tibiae yellow, posterior tibiae anteriorly black; tarsi
yellow. Wings hyaline, veins piceous.
Hab. — Las Cruces, New Mexico (Ckll. 1966, Aug. 24, 1894).
The specific name is derived from the resemblance which the spine
and squamae present to the tail with hindmost fins of a fish of the
genus Diplodus, family Sparidae.
One has to consider the possibility of this being a variety of the
9 of 0. emarginatus. I have a S of emarginatus, kindly identified
by Mr. Fox, which I took in Las Cruces (Ckll. 2436), and it differs
in its entirely black prothorax, in the absence of the spots before the
squamae, in the shape of the squamae and the spine, etc. It would
appear from Robertson’s description (Tr. Am. Ent. Soc. xvi, 84) that
the spots before the squamae are usual in 9 emarginatus. Robertson
says, also, sides of prothorax yellow.
[Note. — 0. sparkleus is evidently distinct from 0. emarginatus — the spine is
differently shaped and the body more coarsely punctured. — W. J. F.]
NORTH AMERICAN HYMENOPTERA.
293
Oxybelus SilbcornutuS n. sp.— Female about 8 mm. Ions, strongly
punctured, but not so closely on abdomen as in sparkleus. Black, with yellowish
white markings; silvery pubescence on face and pleura; vertex with a small
tubercle, looking something like a fourth ocellus; prothorax carinate; scute! urn
not carinate, or very feebly and almost invisibly so ; squamae joined m the middle
line, each ending apically in a strong curved tooth ; spine small, rather broader
at end than at base, abruptly truncate ; median sulcus of first abdominal segment
almost entirely obsolete, or at least very shallow ; tip of abdomen truncate, very
feebly subemarginate. Antenme black, slightly brownish towards tips ; posterior
lateral tubercles ‘of pTothorax whitish; teguhe testaceous; squama and spine
whitish. Abdomen with the bands yellowish white, interrupted in the middle :
femora black, posterior borders of anterior and middle ones mostly white; tibiae
mostly black on one side, the other side of anterior tibiae rufous, of middle and
posterior, white; anterior tarsi rufous; posterior and middle white, the terminal
joints darkened. Wings hyaline, veins piceous.
Hob.- Las Cruces, New Mex., Aug. 11, 1894 (C. H. T. Townsend).
This seems very near to 0. cornutus Rob., and might be a form of
the 9 of that species (Robertson only describes the % ). In mb-
cornutus the ocelli are normally placed, and the spine is truncate, not
rounded. The mandibles of subcornutus are rufous in middle as in
cornutus.
Mr. Fox recognized cornutus in a Las Cruces specimen formerly
sent him, and this circumstance favors the idea of subcornutus being
a form of the same.
[Note — 0. subcornutus differs from the 9 of cornutus by the sparser punctua¬
tion of dorsulum and abdomen, particularly that of the second ventral segment :
in cornutus it is covered with coarse, rather close punctures, while in subcornutus
it is very sparsely punctured. The form of the abdominal markings is different
also. — W. ,T. F.]
Apliilauthops taui-ulus sp. nov. %. Length about 11 mm.: of ante¬
rior wing about 8 mm.— Black, with the markings bright lemon-yellow. Head
broad and thick ; seen from in front broader than high ; eyes elongate-oval, par¬
allel. entire, olive-green, further apart from each other than the greatest length
of either; ocelli about as far from eyes as the third and fourth joints of antennae
hind ocelli a little nearer to each other than the length of the third antennal
joint. Head pitch-black, strongly punctured on vertex, but with a smooth,
shining spot, about as big as an ocellus, some distance behind the ocelli ; cheeks
and face covered with appressed, shining, silvery hairs; overlapping the base ot
the mandibles, on each side, it a triangular tuft of reddish hairs, and immediately
above this tuft is an obliquely oval, pale yellow spot, rather obscured by the sil¬
very hairs: mandibles reddish at tips, and with a small yellowish white spot ex¬
ternally at the base Antennae about as long as the bead is high, black, with t le
end of the scape broadly pale yellow; fourth joint about half as long as third.
Thorax black, with the collar, tubercles, tegulfe, transverse band on scutellum
and small mark on each side, and transverse band on post-scutellum, lemon-yellow ;
metathorax truncate; prothorax in front shining, sparsely punctured ; mesothorax
TRANS. AM. ENT. SOC. XXII.
AUGUST. 1895.
294
T. D. A. COCKERELL.
strongly and thickly punctured ; scutellum and post-seutellum mostly smooth ;
metathorax rough ; pleurae and sides of metathorax with silvery hairs. Thorax
not so broad as head, and not very much greater in bulk. Abdomen hardly as
long as head and thorax, shining, but well punctured, suture between first and
second segments fairly eonstricted ; color black, with broad lemon-yellow bands
on segments 1-5, that on 1 broadly interrupted in the middle, that on 2 narrowly
interrupted, the others continuous, those on 3 and 4 somewhat narrowed in the
middle ; venter with three interrupted bands. Coxae black, with their tips more
or less yellow; femora black, with their distal tips yellow; tibiae yellow in front
and rufous behind on fore legs, middle tibiae yellow without and lemon within,
hind tibiae yellow without and black within, but wholly yellow at their proximal,
and wholly black at their distal ends ; tarsi of anterior legs rufous, the others
piceous. Wings smoky hyaline, nervures piceous, stigma brown ; third submar¬
ginal rapidly narrowing to marginal, a deep sinus between them ; marginal about
as long as first submarginal, narrowly obliquely truncate, with a small stump of
a nervure at its tip; first submarginal somewhat longer than second and third
combined ; second small, nearly half narrowed the marginal, receiving the first
recurrent nervure a little beyond its middle ; third receiving the second recurrent
nervure much before its middle.
Hub. — Las Cruces, New Mexico, June 8, 1894 (Ckll., 872).
The broad head and high-set antennae have somewhat the aspect
of a bull’s or buffalo’s head, whence the specific name.
The United States species of Aphilanthops may be separated thus :
A. — Face with three broad, yellow stripes . frig-idus Smith.
B. — Face without stripes.
1. Legs red ; clypeus margined with yellow . quadrinotatus Ashm.
2. Legs black and yellow.
a. Clypeus yellow . laticinctus Cresson.
b. Clypeus black . taurulus Ckll.
Cameron has described two species, 1. marginipennis and A.punc-
tifrons Cam., from Mexico, but they both appear to me to belong to
Eucerceris ; the first mentioned being allied to E. canaliculatus Say,
though evidently distinct.
Bfysson solani n. sp. 9 .—Length about 6 mm., of anterior wing 4f mm.
Head and thorax black ; legs and abdomen except tip, rufous. Head seen from
above about twice as broad as long, about as broad as thorax ; seen from in front
transversely oval. Black, strongly rugose punctate, sparsely clothed with op¬
pressed white hairs, which, becoming denser, form a conspicuous silvery band on
the face bordering each eye, extending to the insertion of the antennae ; clypeus
black, with white hairs ; mandibles rufous, with blackish tips. Antennae very
dark brown, first joint of flagellum longer than second. Thorax black, very
strongly rugoso-punctate ; anterior portion of prothorax, tegube and metathorax
rufous, but the last very dark ; mesothorax with a faintly indicated median
groove; metathorax with a sharp spine on each side. Legs rufous, tarsi darker ;
fourth joint of hind tarsus conspicuously the shortest; spurs at apex of hind
tibia black, unequal, the one on the inner side being the longer ; hind tibia with
NORTH AMERICAN HYMENOPTERA.
295
five short, stool spines on its outer edge, of these one is apical arrrt tire mtervsl
between the apical and the one before it is conspicuously gi eater than that be
tween any other two. Wings smoky, iridescent : marginal cell subtruncate, mo le
dusky than the rest of the wing; two submarginals only, the normal second s
marginal being wanting instead of the third; second submarginal d^stinc«y
truncate, forming by its junction with the marginal a short-stemmed Y the a
of which are about equal. Abdomen punctate, each segment, except the last, with
a^ silvery band along its inferior margin above and below; first two segments
rufous, next three rufous with dorsum blackish, last mostly black.
f[ab. — Las Cruces, New Mexico, July 13, 1893, on Solanum
4
elceagnifolium. ,
Mr Fox, who first recognized this species as new, observes that it
is near 0. bellus Cr„ but differs in its finer punctuation of abdomen,
and by lacking the yellowish markings on thorax and abdomen It
may be added that its peculiar venation distinguishes it at once from
any known North American species.
[Vote. -It is doubtful in my mind whether the absence of the second submar¬
ginal cell is more than an anomalous character. bicolor, of witch aho but
a' single specimen is known, possesses but two submarginals, hut m that speetes
is the third, not the second, cell that is wanting. A larger ser.es ,s uecessaty to
demonstrate the constancy and value of these supposed, at least a, the pres .
time characters. N. sol.n.i is remarkable for its very strongly serrated h nd
tibise, a character existing in if. <«««« and /...wipes, and which .s not. present in
the species more closely allied to solani. . J. F.]
^ Prosopis subtil is Fox in litt. n. sp.- ? about 6 mm. long black, with
yellow marks on face, protlmrax and legs. Head not very broad ; thorax nearly
twice as long as high, metathorax subtruncate, but with rounded outlines. Head
and thorax rather dull, abdomen shiny ; punctuation of vertex and dorsulum fine-
dose and uniform, giving a somewhat granular appearance under a lens of low
power • metathorax more rugulose, but not conspicuously so, its middle portion
very finely transversely striate; punctuation of abdomen ^nute, shaRow and
inconspicuous; sides of face, to a short distance above the insertion of the an
ten me primrose yellow; this yellow commences narrowly at lowei maigm .
eye and following the edge of the clypeus gradually widens, reaching its greatest
width a short distance below the antenna?, after which it more rapidly nano ws
a^ain to^the^ eye-margin, just touching the outer edge of the sockets of the an-
tonne ■ at its upper termination it does not actually reach the eye-margin being
SZtVd therefrom by a very narrow and abort descend, ng tongue of black
the rest of the face is black, except the lower margin of clypeus, which is bioa y
rufous with centrally an obscure yellowish spot, whence proceeds upward a
suffused rufous tongue ; the rufous of the clypeus therefore resembling in outline
^trefoil leaf or perhapL rather an inverted T ; ends of mandibles shining rufous;
flagellum more or less testaceous below, blackish above ; lnrnl nmrgm ol pic j -
rax narrowly yellow, the yellow interrupted in the middle, tubercles yellow
te^tS with a yellow spot on anterior, and a subrufous spot on posterior half.
Femora black with the extreme tips reddish ydlow : anterior Hibia? » >
front, black behind; middle tibia? with the base rather broadly, and the apex
AUGUST. 1895.
TRANS. AM. ENT. SOC. XXII.
T. D. A. COCKERELL.
296
narrowly reddish yellow; posterior tibiae with more than the basal (proximal)
third pale yellow: tarsi yellowish, with a reddish tinge, darkened toward the
tips. Wings hyaline, with a slightly dusky tinge; second submarginal very little
narrowed toward marginal, rather more than half as long as first submarginal.
Hub. — Las Ciuces, New Mexico, on Solidcigo, by the acequia,
close to Schaublin’s mill, Aug. 24, 1894 (Ckll., 1997), also two other
specimens taken on the same day (Ckll., 1971, 1956). The locality
of subtilis is about two and three-fourths miles from that of P. bipes.
Mr. Fox observes that subtilis “is evidently new, differing in its
subtile sculpture, color of antennae, and spot at apex of clypeus.”
This species and bipes were sent to Mr. Fox with a query as to
their identity with P. limbifrons, but he informs me that they are
not that species, and points out that they are certainly also distinct
from one another.
Although they present considerable superficial resemblance, careful
examination reveals numerous points of difference which cannot be
attributed to variation. The following table will assist in their
separation :
P. bipes. P. subtilis.
Size larger, form stouter.
Punctuation of vertex and mesothorax
strong and deep.
Metathorax more rugose.
Yellow marks on face resembling hu¬
man feet.
Clypeus entirely black.
Smaller, more slender.
Punctuation shallow, and not nearly so
noticeable.
Metathorax less rugose.
Marks on face broadly triangular, not
resembling feet.
Clypeus partly rufous.
Pertlita numerata n. sp. 9- — Length about 5.5 mm.; head and thorax
brassy green, abdomen banded pale yellow and black. Head broader than long,
inner orbits parallel, clypeus and lower part of sides of face with sparse punc¬
tures. vertex finely rugulose ; pubescence of head, as also thorax, scattered white ;
mandibles pale yellowish, rufous at tips; labrum prominent, black; clypeus
shaped something like a cocked hat, shiny, dull white, with very conspicuous
black marks on its disc, i. e., a pair of broad vertical bars, a little converging
above, and not reaching the margin above or below, and a spot without each bar,
below the level of its middle, thus *11* ; small quadrangular patch between
upper edge of clypeus and the antenna;, and a more or less triangular patch on
each side between clypeus and lower front edge of orbit dull pinkish ; the latter
pinkish patch extends along orbit about as far as the level of the insertion of the
antennae, but along clypeus only about as far as the black spot; ridge between
antennae distinct. Antennae above blackish, below yellow, the last joint more or
less truncate ; collar, tubercles, and a band on upper edge of prothorax broadly
interrupted in the middle yellowish white; mesothorax shining, rugulose, very
sparsely punctured, median groove distinct; scutellum rather more closely punc¬
tured ; metathorax bluish-green or bluish, contrasting with the brassy green
mesothorax, scutellum and post-scutellum ; upper part of metathorax shiny.
NORTH AMERICAN HYMEN OPTER A .
297
appearing microscopically tessellated. Femora black, with pale yellow distal
ends; anterior and middle tibiae pale yellow with a black patch behind ; hind
tibiae much longer, with long hairs, and almost all black ; anterior and middle
tarsi pale yellow, hind tarsi black ; tegulse very pale yellow. Wings fairly ample,
hyaline, nervures and stigma piceous, almost hlack, nervures all very distinct;
stigma not at all pale in the middle; marginal cell short, not longer than stigma ;
second submarginal greatly narrowed above, practically triangular. Abdomen
with the first dorsal segment black, with a small, transverse, yellow band, broken
centrally and not reaching the sides on the disc; second, third, fourth and fifth
segments with their their distal half (or more) hlack, and the proximal half pale
yellow, the hands not united in the middle line, nor conspicuously indented .
venter dirty yellow, with a pair of dark oval spots on each segment.
Hub. — Las Cruces, New Mex., May 2, 1895, on Sa/ix (Ckll., 2898).
The shape of the second submarginal cell is like that of P. arcuata
Fox, but P. numerate is totally distinct by its face markings from
any other species that I know of. The number 11 on the clypeus
will at once distinguish it.
DESCRIPTIONS OF NEW II YMENOPTERA.
BY T. I). A. COCKERELL AND J. E. CASAD.
(With Notes by Win. J. Fox.)
Spliieroplitlialma wickhami n. sp. 9 • — ■ About 10 mm. long. Head
large, a little broader than thorax, quadrate seen from above, subcircular seen
from in front ; color orange-brown ; face and crown strongly punctured, covered
with appressed shiny orange-red hairs, with blackish, erect hairs interspersed,
the latter longest above the eyes ; clypeus with long, pale yellowish hairs; man¬
dibles shiny rufous with hlack tips. Antenme brown, blackish towards tips, first
joint of flagellum a little longer than second. Thorax orange-brown, punctate,
becoming strongly reticulate on metathorax ; strongly constricted at sides : mar¬
gin above the smooth and shiny lateral excavations dentate; pubescence similar
to that of head, but mot so dense on pro- and mesothorax, but anterior part of
prothorax and greater part of metathorax bare : coxae and femora orange-red,
tips of femora blackish ; tibiae and tarsi blackish, more or less covered with pale
yellowish shiny hairs; tarsal spines rufous, tibial spurs whitish, minutely ciliate.
Abdomen pyriform, first segment broad and sessile, orange-red basally and nearly
destitute of hairs, but distal half dorsally covered by dense, appressed, shiny, pale
golden hairs; second segment black, finely punctate, with a slight median golden
streak on its anterior third ; a large squarish, pale golden spot on each side, and a
rather broad, median, pale. golden fringe on the posterior margin ; the last-men¬
tioned fringe occupies about the middle third of the margin of the dorsal portion
of the segment, the remaining part of the margin being black, except a small
golden patch on the extreme lateral portion ; the large pale spots are further from
each other than the diameter of either: remaining segments black, heavily
fringed with pale golden hairs, except the last, which has the hairs orange-red ;
ventral surface of abdomen with pale hairs ; that of second segment strongly
punctate and rufous.
Hub. — Houston, Texas (H. F. Wickham) ; one specimen.
This species is allied to S. quadriguttata Sav, which it resembles.
(38)
TRANS. AM. ENT. SOC. XXII.
AUGUST, 189.>.
T. D. A. COCKERELL AND J. E. CASAD.
298
It i.s, however, smaller, and at once distinguished from Say’s species
by the broader head, proportionately narrower thorax, and broader
first segment of abdomen. There are two, instead of four, pale spots
on the second segment, and although tins is the case also with a va¬
riety of quad rig attata, the spots in wiclchami are placed much further
apart than the corresponding (viz. posterior) spots in that species.
The metathorax is also more rounded posteriorly in wickhami than
in quadriguttata. The quadriguttata used for comparison is from
Lincoln, Neb. (Shimek), sent by Mr. Wickham.
Npliivi'oplitlmlma «*ca*vololla n. sp. J. — About 5 mm. long. Head
very large, quadrate, wider than thorax, ferruginous, clothed above with appressed
shining pale golden hairs, with some erect hairs interspersed. Ante mite ferru¬
ginous, with the tips becoming fuscous ; tips of mandibles black. Thorax small,
scarcely longer than the transverse" diameter of the head, ferruginous, rugose,
with scattered, erect, pale hairs ; sides excavate, the excavation smooth and shiny ;
metathorax obliquely truncate, the hairs on it longer than other parts of thorax.
Legs ferruginous, sparsely hairy. Abdomen pyriform, ferruginous, with sparse,
shining, whitish pubescence, both erect and appressed ; first segment gradually
widening, broadly sessile with second ; second segment with its posterior (caudad)
half blackish, the blackish coloration extending forward in a suffused manner
on mid-dorsum, but interrupted on each side by a large, whitish patch or spot
situated about the middle of the segment; these spots owe their whiteness to
appressed shiny white hairs, situated on a pale ferruginous ground, which is
easily seen between them ; last segment subfuscous.
Hub. — Las Cruces, New Mexico, May, 1894 (Ckll., 718).
Judging from the description, this may be the western represen¬
tative of the eastern S. sccevola Blake, but, as will be seen on com¬
paring the descriptions, it is smaller and differs in color. In its type
of coloration it stands somewhat between ferrugata and quadriguttata,
though very different from either.
[Note. — Scsevolella is not related to scsevola, as it approaches fj..minutissima and
canadensis, species of a widely differing group. It is most closely related to
minutissiina, being somewhat larger, the hind angles of head not so sharp and the
metathorax is not denticulated. — W. J. F.J
Sphseroplitlialma riifostifTiixiS* n. sp. J.— About 12 mm. long. Head
rounded, reddish brown, becoming blackish on cheeks and occiput, covered with
dense, coarse, appressed golden hairs, with a few erect black hairs interspersed;
scape of antennae with golden hairs, flagellum black; mandibles long, blackish
with brown bases, with the denticle about twice as far from the tip as in wickhami ;
eyes large, more precisely circular than in wickhami. Thorax about as broad as
head, pyriform seen from above, quadrate seen from the side, reddish brown,
rngoso-punctate, reticulate on metathorax ; sides little constricted ; pubescence
of dorsum of thorax taking the form of three broad transverse bands, the first
black, the second golden, the third (more sparse) black; all these colors being
modified somewhat by the rufous dermis showing between the hairs. The ante¬
rior edge of the golden band is practically straight, whereas its posterior edge is
convex. Legs rufous, with sparse, long, pale yellowish hairs; coxae, ends of
femora and tibiae, and tibial spines black, or nearly so ; tibial spurs finely serrate.
NORTH AMERICAN HYMENOPTERA.
299
Abdomen elongate-pyriform, strongly rugose punctate, rufous marked with black
and yellowish; first segment moderately broad, the suture between it and the
second constricted, so that the angle between the first and second segments at the
side is about a right angle, not a very obtuse angle as in ferrugata In general
shape the first segment might be compared with that of quadrig attain, having the
comparative narrowness which distinguishes that from wickhami, but in quadri-
guttata the sides of the segment are flattened after the manner of ferrugata,
whereas in rufomffma they bulge just before the suture; second segment shining,
lively rufous, with black and blackish markings ; a blackish triangle, owing its
color to appressed black hairs, has its apex cut off by the anterior border of the
segment, and its base about the middle of the segment prolonged at the angles
obliquely downward and hindward in the form of a suffused and finely evan¬
escent horn. Looking at the insect with the head downwards, the triangle and
its prolongations resembles in form the skull of an ox — or better, a gayal — with
the nose cut of and the horns shadowy. Below the base of this triangle the color
of the dermis shows as' a broad rufous baud, with the slightest indication of a
dark middle line, such as may sometimes be seen in ferrugata ; the posterior mar¬
gin of the segment is broadly black, with a yellowish dot medially; this black
margin is replaced at the middle of the sides by a yellowish iringe, which is con¬
tinued beneath; the third segment, so far as visible, is colored like the black
margin of the second, with the central yellowish spot and the yellowish fringe
beneath ; the fifth and sixth are covered with yellowish or golden pubescence,
and the last, as the sixth beneath, is black.
Hub. — Guanajuato, Mexico (Dr. A. Duges) ; one specimen.
This species is not very near to anything we have seen. The pale
thoracic band, with black above and below, suggests the condition
of affairs in dugesii; whereas the abdominal markings faintly sug¬
gest quad rig uttata, the portions left rufous corresponding to the four
spots of that insect, at least to some considerable extent. If, as was
argued when prunotineta was described, dugesii is derived from more
or less hairy types such as prunotineta; it appears probable that
quadriguttata and ferrugata represent even a later stage of evolution
than dugesii, though in a different line which may be indicated bv
such a species as rufosuffusa.
Prosopis asinimis u. sp. % . — About 5 mm. long; black, with yellowish
white markings. Head and thorax strongly punctured; metathorax truncate,
rugulose; mandibles strongly bifid; the inferior margin of the clypeus is brown,
but otherwise, it and the rest of the face below the level of the insertion of an¬
tennae is yellowish white; the yellowish white continues on the sides of the face
above the level of the antennae about as much as the length of the scape, ending
in an obtuse point at an angle of about 50° : the face markings, taken altogether,
strongly suggest the head of a donkey, with erect ears, hence the specific name;
scape broadened, truncate : flagellum dark brown ; collar and tubercles yellowish
white: tegulse pale. Femora black, more or less pale at distal ends; tibiae yel¬
lowish white, the four posterior ones ringed with black about their distal halves ;
tarsi yellowish white, terminal joints brownish. Wings hyaline, nervures and
stigma piceous ; recurrent nervures uniting with transverse cubitals ; second
submarginal cell slightly narrowed towards the marginal. Abdomen with the
anterior face of the first segment finely pubescent, posterior lateral margins of
this segment also finely white pubescent ; posterior half of abdomen becoming
TRANS. AM. ENT. SOC. XXII.
AUGUST. 1895.
300
T. D. A. COCKERELL AND J. E. C'ASAD.
more or less brownish and finely pubescent, the pubescence in certain lights pro¬
ducing a slightly silvery appearance.
Hub. — Las Cruces, New Mexico, on campus of Agricultural Col¬
lege, September, 1894 (Ckll., 2404). Type in coll. Am. Ent. Soc.
Prosopis rudbccltia- n. sp. % . — About 5 mm. long; black, with prim¬
rose yellow face markings. Head and thorax closely punctured ; metathorax
more or less rounded, hardly truncate ; face, including clypeus, below level of in¬
sertion of antennae primrose yellow, sutures conspicuously black : the yellow ex¬
tends upward a little way between the antennae, and on each side of the antennae
remote from the margin of the eye there extends upward a yellow process, which
broadens toward its end. the length of this process being not much more than
half the length of the scape; scape broadened, truncate, black with an elongated
yellow mark on its outer side ; spot on tubercles and small spot on tegulse yellow¬
ish. Femora black ; anterior tibiae brownish yellow, dark behind; middle tibiae
black, with the proximal end yellowish ; posterior tibiae black, with the proximal
two-fifths pale yellow; tarsi brown, the four posterior ones yellow at their prox¬
imal ends. Wings dusky hyaline, nervures and stigma piceous ; recurrent ner-
vures uniting with transverse cubitals. Abdomen finely punctured, very finely
pubescent; the pubescence on the thorax is sparse, white on pleurae, tinged with
fulvous on dorsum.
Hub. — Santa Fe, New Mexico, July 19, 1894, on liudbeckue la-
ciniata (Ckll., 1563). Type in coll. Am. Ent. Soc.
This seems to be a distinct species, though very similar to P. an¬
tenna, Um.
I’roxopis bipes n. sp. 9 • — About 6.5 mm. long; black, with yellow mark¬
ings; venter and dorsulum closely and strongly punctured: clypeus rather
sparsely punctured ; abdomen with fine shallow punctures, not so close as those
on dorsulum ; metathorax rugose, abruptly truncate, concave centrally, with the
upper medial portion strongly longitudinally wrinkled. Legs very lightly clothed
with silvery hairs. Abdomen shiny, second segment with a patch of white pu¬
bescence on each side along the hind margin, apical segment tufted with silvery
hairs; sides of face extending from mouth upward about three-fourths length
of eye, collar, tubercles, spot on tegulfe, and basal portions of tibiae and tarsi,
yellow ; the yellow on the sides of the face gradually broadens to the insertion
of the antennae, where it is notched, and then continues broad until it ends ab¬
ruptly. These yellow markings resemble a pair of feet standing on tiptoe, hence
the specific name proposed ; the heel of each foot is against the socket of an an¬
tenna; flagellum brownish beneath; clypeus entirely black; mandibles black.
Wings hyaline, nervures and stigma piceous,
Hub. — Las Cruces, New Mexico, on campus of Agricultural Col¬
lege, September, 1894; two specimens (Ckll., 2411, 2412).
Mr. Fox remarks, concerning bipes, that it is related to varifrons
and affinis, but distinct ; differing by the much greater space between
the hind ocelli in comparison to that between them and the nearest
eve-margin. He adds, “ the punctuation of the dorsulum is not quite
so close as in the two mentioned, and in varifrons there is yellowish
on the pronotum.”
NORTH AMERICAN HYMENOPTERA.
301
ON THE LARVE OF SOME NEMATOID AXI> OTHER
SAW-FEIES FROM THE NORTHERN
ATLANTIC STATES.
BY HARRISON G. DYAB.
The larvae of our saw-flies have been much neglected, and the
majority of those here described have not been referred to previously
in literature, though they were collected at random. They include
only those that I have succeeded in bringing to imago. Mr. C. L.
Mt irlatt, of the Department of Agriculture, has kindly determined
a number of them.
Fristipliora tibialis Norton.
Larva. — Head whitish, scarcely shining, eye black, mouth brown ; a green tint
by transparency ; width 1.5 mm. Body smooth, not shining, faintly 4-annulated,
translucent leaf-green, the pulsating edges of the dorsal vessel forming a geminate
white dorsal line, filled in with the darker green blood, the anal end usually
touched with crimson ; segmental incisures a little folded, forming transverse
whitish bands when the segments are retracted ; tracheal line evident; thoracic
feet clear, moderately spreading, abdominal ones small, present on joints 6-11
and 13.
Lad stage. — As before, but the head is shining, with brown dots; body also more
shiny ; width of head the same as before ; the larvae form brown cocoons in the
earth.
Found on the white birch ( Beta la papyrijera ), sometimes hiding
under the bark, or on the leaves at Iveene Valley, New York ; also
on willow and yellow birch at Jefferson, N. H.
Venial iis similai’is Norton.
Egg. — The eggs are laid in incisions, solitary under the lower epidermis, the
cuts forming semi-circular incisions .8 mm. in diameter.
First stage. — Eating a hole in the leaf; lashing the body when disturbed. Head
entirely blackish, almost black, mouth pale, width .4 mm. Thoracic feet large,
black except at the joints. Body annulate, shining, translucent whitish ; ali¬
mentary canal green; a pair of button-like, bjack anal tubercles; no suranal
plate visible : feet on joints 6 11 small, eoncolorous; on joint 13 rudimentary.
Second stage. — Head pale, shaded with brown, most distinctly in a vertical me¬
dian and lateral stripe; eye and mouth dark; width .6 mm. Thoracic feet
watery, black at base and tip. Body more greenish than before, as the alimen¬
tary canal shows plainer ; traces of blackish subventral tubercles.
Third stage. — As in the next stage, hut the markings on the head are more dif¬
fuse and brownish ; width .9 mm. Thoracic feet black tipped.
TRANS. AM. ENT. SOC. XXII.
AUGUST. 1895.
302
HARRISON G. DYAR.
Fourth stage. — Head round, wider than high, clypeus large; width 1.2 mm.
Pale greenish, eye black; a narrow blackish line along median suture arid right
across the clypeus above; a lateral brownish one above and behiud the eye.
Thoracic feet moderate, abdominal small, on joints 6-11, 13; segments rather
obscurely 4-annulate, shining between the annulets, greenish ; general appear¬
ance not shining, translucent yellowish green, alimentary canal darker, but not
contrasting ; no marks nor tubercles.
Fifth stage. — As before ; width of head 1.5 mm. ; anal processes short, cylindric-
truncate, brown tipped.
Sixth stage. — Much as before, but the two anterior annulets are obscurely watery ;
width of head the same ; the larvae enter the earth to form their cocoons.
Food-plant. — Locust (. Robinia pseudacada ). The larvae are soli¬
tary and eat holes in the leaves or sit on the edge of a leaf, as de¬
picted in the figures copied from Comstock in the Fifth Report U. S.
Ent. Com., p. 369.
Neinatiis niemlifiis Walsh.
Two species with green females were sent to Mr. Marlatt and de¬
termined as mendicus. The larvae are not inquilines, but Mr. Mar¬
latt states that Walsh’s conclusions are not improbably founded
upon error. Therefore, I will describe the first larva under this
name, as it feeds on willow. The other is different, the fly also is
considerably larger than mendicus, with only very slight brownish
black marks on vertex of head and on thorax. I distinguish it
below as N. pinguidorsum.
Egg. — Laid anywhere on the leaf in semicircular saw-cuts just under the upper
epidermis ; cuts 1.5 mm. in diameter.
First stage. — Head blackish testaceous, shining, eye and mouth black; higher
than the body; width .3 mm Body indistinctly 4-annulate, not very shining,
greenish. Thoracic feet and anal prongs blackish; abdominal feet on joints 6-11
and 13.
Second stage.— Head dull testaceous, a blackish longitudinal line at the vertex,
one upward from each ocellus ; eye black, mouth brown : width .55 mm. Body
dull greenish, thoracic feet concolorous; a faint blackish tinge above spiracles
and a little on subventral ridge on joints 2-4, pale aloug dorsal line: posterior
portion of the body curved under so as to touch the venter; anal prongs blackish.
Third stage. — Head rounded, flattened before, pale green, faintly brownish
tinged; a black longitudinal line over the vertex, reaching top of clypeus: a
lateral transverse line over ocellus, not quite reaching vertex ; mouth brown ;
width .9 mm. Body soft, leaf green, a faint blackish dorsal and substigmatal
shade line: venter a shade paler. Feet small, green ; anal prongs blackish. Body
scarcely annulate, not shining; tracheae showing as a white line.
Fourth stage. — Head clear green, marked as before, the marks clouded, not so
black as ocelli; an additional patch at apex of clypeus; width 1.15 mm. Body
uniform leaf green, not shining, except in the creases of the annulets ; feet clear,
NORTH AMERICAN HYMENOPTERA.
303
no marks : color paler, clearer greenish yellow than before, tracheae very distinct,
white ; annulets very obscure ; anal prongs with a very faint blackish shade, a
few setae on anal plate.
Cocoon. — At first pale yellow, latter brown, opaque.
Food-plant. — Willow (. Salix ). Found in Central Park, New York,
and Plattsburgh, N. Y. I am not certain that I have observed all
the stages, but give them as they are in my notes.
Neinatiis pinguidorsum n. sp.
Third (?) stage. — Eating a hole in the leaf ; all green, with marks as in the next
stage, but faint; eye black; width of head 1.0 mm.
Fourth stage. — Head greenish, eye black, shining, a dark shade bordering the
median suture and a brown one from the ocellus upward ; width 1.3 mm. Body
translucent, of the color of a solution of chlorophyl ; segments 4-annulate, with
indications of dusky tubercles on second and third annulets, segmental incisures
folded. On each side of the dorsal vessel is a segmentary patch of pale yellow
consisting of a collection of fat granules, showing by transparency, present on
joints 5-12. Feet on joints 6-11 ; on the anal plate are two short, brown-tipped
projections.
Fifth stage. — As before, the fat-patches very evident, pale yellow, consolidated
into distinct spots; end of joint 13 above and below deep reddish ; width of head
1.75 mm.
Food-plant. — White birch (Betula papyrifera). The larvae are
solitary and rest on the edge of the leaf. Found at Keene Valley,
New York.
I do not know the true number of stages of this species.
Nematiis dorsiviltal us Cresson.
Egg. — Laid in semicircular incisions under the upper epidermis. 1.5 mm. long.
Second stage. — Head testaceous, a brownish shade up from the black eye ; width
.65 mm. Body pale yellowish, the food showing green by transparency, slightly
shining, subannulate.
Third stage.— Head as in the next stage, but pale testaceous; jaws black ; width
1.0 mm. Body the same, slightly shiuiug, subannulate.
Fourth stage. — Head greenish, with a slight honey tinge, large, higher than the
dorsum; a faint blackish shade runs up not far from the black ocellus which is
surrounded by a black spot; mouth brown, a dark mark for antenna; width
1.4 mm. Body subtranslucent poplar-leaf green, not shining, the segments
folded; no annulets, or the merest trace. Feet on joints 6-11, 13: anal prongs
short, brownish; blackish marks at the base of the clear thoracic feet; tracheal
line evident ; no tubercles.
Fifth stage. — The same, with same width of head.
Both sexes were sent to Mr. Marlatt and determined as above.
Is our species really the same as the Nevada one?
Solitary edge-eaters on poplar at Plattsburgh, N. \ .
The female fly is entirely green, except for the black marks and
the legs, which are greenish testaceous.
TRANS. AM. ENT. SOC. XXII.
AUGUST, 1895.
304
HARRISON G. DYAR.
\ <‘111:1 Ins liiteotorgum Norton.
Larva. — Head shining black, sutures of mouth pale; width .85 mm. Feet on
joints 6-11 and 13; anal prongs black. Body shining green, yellowish sub veil -
trally and on the legs; segments obscurely annulate, all minutely pilose, but no
distinct tubercles; a blackish subdorsal shade-band and also blackish on the two
parts of the subventral ridge. Thoracic feet and anal plate shaded with dusky
black ; a medio-veutral series of black patches.
Last stage. — Head shining dark vinous,. eye black ; minutely pilose ; width 1.1
mm. Body shining, sordid greenish, rather dark, shaded more or less with vinous,
especially subven trally ; segments obscurely annulate, minutely pilose ; dorsal
vessel a dark band ; the subventral ridges show as blackish elevatious. Thoracic
feet partly, anal plate and prongs largely black.
A female from hybernating pupa was named “ Amman ronematus
luteotergum” by Mr. Marlatt ; a pair, male and female, from the
same batch of larvse, but which emerged during the same season,
were designated “ Pteronus n. sp., near latifascmtus Cress.” This
must be simply a case of seasonal dimorphism.
Gregarious edge-eaters on alder (. Alnus ), Keene Valley, X. Y.
Nematiis Int i fascial u* Cresson.
Larva. — Head vinous brown, dotted with brown over the vertex, eye black :
width 1.6 mm. Body purplish vinous tinted, a metallic red-green shade over the
dorsum, partly produced by the food showing by transparency ; segments indis¬
tinctly 6-annulate, shining, a lateral black shade band, scarcely noticeable against
the metallic shade, supplemented by black patches on the folds around the
spiracles, subventrally and on the bases of the legs, the latter distinct against
the pale purplish subventral color. Feet all pale, yellowish tinged; abdominal
on joints 6-11, 13, small; anal plate and short prongs black; setate minute,
seen with a lens.
Allied to the preceding; solitary or partly gregarious on white
birch (B. papyrifera ) at Keene Valley, Xew York. Imago the same
season.
Xcinatus vent ral is Say.
Eggs (see “ Insect Life,” i, 36). — In large clusters of flat, semicircular saw-cuts
under the lower epidermis, 1x2 mm. in size.
First stage. — Head round, shining black ; width 0.55 mm. Thoracic feet long,
spreading, black except at the joints ; segments indistinctly 4-annulate, abdominal
feet small, on joints 6-11, 13. Body slightly shining, blackish green, subtrans-
lucent ; anal prongs concolorous.
Second stage. — As before. Head .75 mm. wide. Body smooth, greenish black,
anal prongs black.
Third stage. — Head shining greenish black ; width 1.0 mm. ; eyes and jaws
black. Body scarcely annulate, smooth, shining, obscure blackish olive, anal
fork black tipped. Thoracic feet blackish, marked with black. Body unicolorous.
immaculate, or the orange spots of the next stage partly present (another brood).
Fourth stage.— Head shining black, the frout with four grooves aud two dents
above the clypeus ; sutures around the mouth brown ; width 1.4 mm. Thoracic
NORTH AMERICAN IIYMENOPTEEA.
305
feet large, pale olive, marked with black; abdominal ones small, on joints 6 11,
13, pale green. Body smooth, irregularly 5-annulate, the creases like slight folds ;
shining blackish olivaceous, with a series of lateral pale orange spots, distinct
only centrally. The spots are above the subventral fold on annulets 2 and 3.
Larvae vary in shade, some are blacker than others, and the orange spots vary
in distinctness. The larvae scratch the leaf with their anal prongs and make a
rasping sound.
Fifth stage. — Width of head 1.4-1. 6 mm. As before, slaty black, except the feet ;
lateral orange patches on joints 3-12 ; the two median annulets have somewhat
corneous, dorsal, transverse areas, shining, but concolorous with body. Feet all
pale watery. Two days after molting the' larvae began to turn shining aud livid
with a pale dorsal streak anteriorly and entered the ground to spin their cocoons.
Food-plants. — Found on willow ( Sali.r babylonica) in Central
Park, New York, and on poplar (Pop ulus grand identatus) at Platts¬
burgh, N. Y. [The latter produced lombardus.~\
The characteristic larva of this species has been described in Har¬
ris’ “Entomological Correspondence,” p. 270. and in “Insect Life,”
i, p. 33, and quoted in the “ Fifth Report FT. S. Ent. Commission,”
pp. 524 and 588.
Male Hies emerging the same season were determined by Mr. Mar¬
latt as N. ventralis, but male from pupae which had hibernated were
named “ Pteronus lombardus Marlatt MS.” I have not as yet bred
any females, and suggest the seasonally dimorphic relation of these
two forms by showing the apparent identity of the larvae.
Nematus Marlattii n. sp.
Larva. — Solitary, eating on the edge of alder leaves ; sitting on the edge or in
a hole, the posterior half of the body curled spirally. Head full at vertex, round,
clypeus rounded, distinct ; pale, shining, greenish brown, with a clouded, deep
black longitudinal patch at the vertex and one laterally over the black eye: cly¬
peus and mouth rather darker brown ; width 1.2 mm. Thoracic feet moderate,
pale ; abdominal ones on joints 6-11, 13 ; segments moderately 4-annulate, smooth,
not shining, subtranslucent leaf-green, dorsal vessel scarcely showing; a broad
subdorsal blackish green band, broken into a series of segmental patches, extend¬
ing down to enclose the spiracles; double subventral ridge also blackish, but dis¬
tinctly spotted with pale, corresponding to the obsolete tubercles; the subdorsal
patches also contain pale spots corresponding to tubercles on annulets 2 and 3,
but less distinctly.
Imago. — Length 25 inch., expanse .5 inch. ; antennae nearly three-fourths the
length of body. The coloration corresponds with Norton’s description of ven¬
tralis, but the orbits are continuously pale.
A single female was determined by Mr. Marlatt as N. ventralis
Say, and indeed corresponds closely with the description. However,
as the larva is very different, the species must be separate.
(39)
TRANS. AM. ENT. SOC. XXII.
SEPTEMBER, 1895.
306
HARRISON G. DYAR.
Nematus Hurisonii magniis n. sp.
Larva. — Sitting on the edge of a leaf and thrashing the abdomen about when
disturbed. Head normal, round, black, sutures paler ; width 2.2 mm. Thoracic
feet moderate, pale, abdominal ones on joints 6-11, 13, well developed ; short
black anal spines. Body smooth, shining, faintly 3-annulate, dorsal vessel yel¬
lowish ; color bluish or leaf-green, with a series of orange-yellow, large lateral
blotches on joints 3-12 and numerous black spots as follows : two transverse rows
per segment above the spiracles, the anterior of three on each side, the posterior
of four, its lower (lateral) one largest ; two black patches on the halves of the
subventral ridge, the lower posterior one somewhat broken ; on joint 13 a large
lateral black patch and dorsal suranal blackish cloud.
Imago. — Female : length 9.5 mm. Black, lateral lobes of mesotkorax dark
brown. Abdomen yellowish ferruginous, except basal plates and extreme tip.
Wings hyaline, a faint dusky shading below stigma ; posterior angles, labrum and
palpi, tegulse and legs pale, coxie black at base, posterior coxae and all the femora
largely yellowish ferruginous, apical three-fourths of posterior tibiae and their
tarsi black.
Mr. Marlatt has confirmed my determination that this species is
undescribed.
Two larvae on poplar at Plattsburgh, N. Y.
This rather large fly is named for my friend, Prof. George H.
Hudson.
\einatus corylus Oresson.*
Third stage.- — As in the next stage, but less green, more sordid yellowish : all
shining, subventral black spots distinct, anal plate black, contrasting, contiguous
to a small spot below the anus; width of head .7 mm.
Fourth stage. — Head shining black ; width 1.0 mm. Body shining green, a little
paler than the upperside of the alder leaf ; dorsal shading (of the next stage)
scarcely indicated, except as a dusky subdorsal shade on thorax, but anal plate
black ; subventral folds black, forming two black spots per segment, the upper
anterior, the lower posterior. Thoracic feet black at base and tip; median ven¬
tral black spots present, but abdominal feet concolorous with body ; not opaque,
the tracheal line visible ; set® on two annulets.
Fifth stage. — Head shining brown, sordid, eye black on a diffuse spot; width
1.4 mm. Body indistinctly annulate. Feet on joints 6 11, small on 11 ; thoracic
feet moderately large. Body long, slender, green, of a dark tint, the spiracular
area on each segment faintly discolored, yellowish ; dorsal area completely shaded
in black, slightly metallic (bronzy) ; double subventral folds, abdominal feet out¬
wardly and a row of medio ventral dashes black ; sometimes a little black stig-
matal spot. Thoracic feet pale, marked with black above on joints and claw ;
anal plate black ; set® minute, dark.
Cocoon. — An oval brown structure at the surface of the ground, as usual in the
genus.
Slender, gregarious edge-eaters on alder, with five long, slender,
eversible, medio-ventral scent glands, emitting an unpleasant odor,
* These larvae differ from those described by me under the same name (Can.
Ent. xx vi, 44), but perhaps not to a speciiic degree.
NORTH AMERICAN HYMENOPTERA.
307
situated posterior to the abdominal feet on joints 6-10. Found at
Weld Pond, Franklin County, Maine.
Nematus lateralis Norton* (3E). Larva. — Head rather flat before, green,
a black shade from ocellus each side nearly to vertex and narrowly in the sutures
of clypeus and median suture to vertex ; ocellus in a black spot; width 1.4 mm.
Body leaf-green, rather dark, slightly shining; feet on joints 6-11, 16, small, con-
colorous; segments rather indistinctly 5-annulate, with minute, dark, setiferous
dots on two central annulets, most distinct on the thorax and subventrally. Body
slightly translucent, tracheae evident, no marks ; anal feet absent, but on end of
anal plate a pair of colorless short processes with enlarged ends.
Last stage. — As before, hut a black shade on clypeus; segments 4-annulate, not
shiny, annulets 2 and 3 higher and shiny ; no setiferous dots, but minute pile on
head and thorax ; blackish marks at base of thoracic feet.
Solitary edge-eaters on white birch ( B . papyrifera), the body not
elevated, but bent with the leaf. Found at Plattsburgh, N. Y., and
Keene Valley, New York ; also in Central Park and along Riverside
Drive, New York City, on B. populifolia.
Note. — -The preceding larvse are all adapted to rest on the edges
of leaves. The two following, however, rest fiat on the surface, are
slightly flattened, and would be taken for species of Selandria at
first glance. But their number of legs is normal for the Nematids.
Xenial us thoracicus Harrington.
First stage. — Head round, higher than wide, but not narrowing to vertex ; shin¬
ing, eye black, mouth brown ; width 0.25 mm.
Second stage. — Similar; eye surrounded by a black spot: head rather higher;
width 0.33 mm.
Third stage. — Head almost whitish, pale: width 0.5 mm. ; joint 2 small, making
the head appear prominent. Body much as in the following stages, but paler.
Fourth stage. — As in the next stage in all points, but a little paler, though darker
than in the jirevious stage ; width of head 0.7 mm.
Fifth stage. — Head round, smooth, shining, greenish testaceous, prominent; eye
black, mouth brown ; width 1.0 mm. Thorax a little enlarged, the feet spreading
widely, not concealed. Abdomen slightly tapering posteriorly, gradually be¬
coming smaller from the thorax ; feet present on joints 6-11 and 13 ; segments
4-anuulate. smooth, without tubercles, not shining ; color pale clear green, the
alimentary canal showing dark green, or the surface covered with a slight white
bloom. Thoracic feet watery greenish ; abdominal ones short, concolorous with
the pale suhventral region ; anal plate rounded.
Sixth stage. — As before ; width of head 1.4 mm.
Seventh stage. — Head held forward ; light testaceous, faintly brownish, smooth,
shining minutely reticulated ; eye black, mouth brown ; width 2.0 mm. ; joint 2
* Identified by Mr. Marlatt, hut doubtfully. He says: “3E does not agree
altogether in color with this species, but seems to come closer to it than to any
other. . . . Since the original type of lateralis is lost, it may be as well, perhaps,
to describe your specimen as a new species.”
TRANS. AM. ENT. SOC. XXII.
SEPTEMBER, 1895.
308
HARRISON G. DYAR.
depressed anteriorly. All as in the previous two stages: skin smooth, but not
shining ; at the end of this stage the larvae fade to a whitish color with a bright
green dorsal hand and enter the earth without molting.
Cocoon double, the outer layer thin, brown, the inner dark brown, compact, but
not very hard ; size 4 x 8 mm.
Larvae found at Woods Hull, Mass., Jefferson, X. H., and at
Plattsburgh, N. Y.
Solitary, resting on the venter on the under surface of a leaf ;
eating only the lower epidermis and parenchyma until nearly full
grown, when they eat the whole leaf for a short time. The food-
plant is the sugar plum ( Amelanchier canadensis ).
\cmnliis nnicolor Marlatt MS.® (4.T). Larva. — Head slightly granular,
shagreened, a little pilose, pale brownish, pale around mouth, not shining; eye on
a black spot; two blackish shades on the back of head behind the vertex ; width
1.8 mm. Thorax a little enlarged, its feet spreading ; venter flattened ; feet on
joints 6-11 and 13; subventral region slightly fluted with a few pale sets? ; seg¬
ments not very completely 5- to 6-annulate, segmental incisures folded, not
shining, translucent greenish, food giving a dusky tint; subdorsally below the
skin a series of emerald-green or pale green granules and streaks, forming a
nearly continuous band or even an evident white subdorsal band; tracheal line
evident; spiracles pale. When mature the larvae became pale yellowish with a
bright emerald green tint on the thorax and entered the ground.
Cocoon as usual.
Shape and habits of the preceding. Found on the white birch at
Keene Valley, New York.
INjecilosoma inferent isi Norton.
Larvse. — Singly on alder, stretched out flat on the surface of the leaf ; smooth,
not shining, pale leaf-green, covered with a white bloom; segments 6-annulate.
Body slightly largest through the thorax, smaller posteriorly. Thoracic feet not
large, just visible from the dorsal aspect; abdominal ones on joints 6 12, 13 pos¬
teriorly. Head with a white bloom ; eye surrounded by a black spot; width 1.2
mm. ; length of larva 18 mm.
Last stage. — No white bloom. Body smooth, slightly shining, pale green, a little
yellowish and rather opaque. Head less green, eye black ; gradually the larva
becomes a translucent waxen pinkish and seeks a place for hibernation.
Found on the alders in Keene Valley, Xew York, the imagoes
the following April.
The two sexes of this fly are very different, and the female has
been described by Provancher as Strongylogaster a/bosecta..
tloiiopliailn us Say. Larva. — Head black throughout, not very
shiny, smooth ; width 1.6mm. Feet on joints 6-13; body thick, sides perpendicular ;
no ridge; segments 6-annulate, the annulets less distinct than the segmental in-
* Mr. Marlatt identifies the fly bred from this larva with specimens from Mt.
Hood. Oregon, to which he has given the MS. name of Pteronus unicolor.
NORTH AMERICAN HYMENOPTERA.
309
cisures, smooth, slightly shining; color opaque whitish, with a leaden gray tinge.
Thorax, subventral region to spiracles and joint 13 faintly shaded with pale yel¬
low ; trachea] line evident; a layer of gray-white pigment seems to lie under the
skin like a blanket over the dorsal area nearly down to the spiracles.
Last stage. — Not observed: the larva molted and immediately entered the earth.
Found on a young leaf of ash ( Fraxinus ) at Keene Valley, X. Y. ;
also on the ash at Rouse’s Point, X. Y., in June.
Taxonus multicolor Norton. Larva. — Head with a gray lateral patch and
one at the vertex, shining; width 1 mm. Thorax a little enlarged, feet on joints
6-13; segments neatly 6-annulate, not at all shiny; color all sordid white with
faint traces of a shaded black subdorsal line ; food showing faintly by trans¬
parency.
Next stage. — Head pale brownish, a large square black patch on the vertex, not
reaching the clypeus: a lateral patch; mouth brown; head scarcely shining;
width 1.4 mm. Body not shining, with a smoky tinge, a very broad olivaceous
black subdorsal band, irregular above ; faint blackish marks in impressed spots
above the subventral fold. Feet all pale; anal plate transverse, black, not
shining ; two little pale dots on annulet 1 of joint 2 ; a brown shade at apex of
clypeus.
Last stage. — Width of head the same ; translucent and waxy throughout, tinged
with vinous and tar-brown, the latter in the folds and on vertex of head. Body
shining, smooth, annulate. On acquiring this stage the larva; enter the ground
to construct their hibernation cells.
Sitting flat on the venter on the leaves of the white birch ( Betula
papyrifera ) ; also on the yellow birch ( B . lento).
llylotoina scapularis King.
Entirely similar to and indistinguishable from the larva of H.
pectoralis Leach, which I have elsewhere described. Feeds on the
white birch.
llylotomu cserulens Norton.
Also indistinguishable from the larva of H. pectoralis. Feeds on
white birch.
Hylotoma Mclieayi Leach (2L). Larva. — Head pale greenish yellow, eye
and mouth black ; a dusky black stripe over vertex and upper part of clypeus ; width
1.8 mm. Thoracic feet large, abdominal small, on joints 6-11, 13. Body segments
3-annulate, the obscure shining tubercles greenish, tubercle 1 marked with black
on joints 2-4; subventral ridge very prominent, undulate setiferous: color light
green, darker dorsally, with a broad, distinct, pale yellow subdorsal band between
tubercles 1 and 2 ; spiracles black, subventral ridge faintly discolored, brownish ;
all tubercles setiferous; line of tracheae yellowish.
Cocoon reticular, of yellow silk, at the surface of the ground, as usual in the
genus.
Found on black birch at Plattsburgh, and on white birch and
mountain ash at Keene Valley, X. Y. ; also on Pyrus arbutifolia at
TRANS. AM. ENT. SOC. XXII.
SEPTEMBER, 1895.
310
HARRISON G. DYAR.
Woods Holl, Mass., and on sugar plum ( Amelanchier ), willow
and strawberry at Jefferson, N. H.
It will be noted that this larva is widely different from the one
described by Norton as II. McLeayi, and also from the one which I
have recently described under the same name in the “ Canadian
Entomologist.” The latter larva is marked by the letter S in my
notes, the present one by 2L. The flies were sent to Mr. Marlatt,
who confirms my determination saying “ your specimens labeled S
and 2L are unquestionably McLeayi .”
Apparently, in this genus, there are three species produced from
one larva ( pectoralis, scapularis and cceruleus) and three larvae which
produce one species of imago (McLeayi).
I want to call attention to this curious problem in order to induce
others to assist in investigating it. I may state that the larvae which
produced McLeayi were bred in different years, so that it is highly
improbable that there could have been any confusion. Moreover,
they were fed in small jars on single leaves, so that other larvae
could not have been accidentally introduced without discovery.
Strongj logawler soriculal us Provancher. Larva. — Head whitish, with
sordid testaceous tinge, shining, eye black, mouth brown ; some with an obscure
brownish shade at vertex, or a black patch behind eye and a large one on vertex.
Body not shining, whitish waxy, appearing green, except subventrally, from the
food showing by transparency ; in later stages actually green ; segments finely
6-7 annulate; spiracles dark, tracheal line white; feet on joints 6-13.
Found on the common brake ( Pteris aquilina) solitary, sitting flat
on the venter, or on the edge of a leaf. Pupa form in a cell bored
in soft wood.
*Strongjiogaster aiiniilosiis Norton.
Not distinguished from the preceding and occurring on the same
food-plant. Some of the variations above noted and referred to
individual differences are probably really of specific value.
* Strongylogasler luctiiosus Provancher.— Head shining whitish with
a brown tint, eye and mouth dark ; a black shade behind the eye, touching it ; a
neat, shining, black patch on the vertex, pointed anteriorly and reaching the
clypeus, where it enlarges a little; width 2.4 mm. Body neatly annulate, light
emerald-green dorsally, waxy whitish on joint 2 anteriorly, joint 13, subventrally
and on the feet; last two joints of spreading thoracic feet black tipped ; a pair
of black patches at base of anal plate, and a series of little orange ones below the
black spiracles on joints 3-12. Body slightly shining.
Found with the preceding at Keene Valley, N. Y. ; also on Pteris
at Jefferson Highlands, N. H.
* Determined by Mr. A. D. MacGillivray.
NORTH AMERICAN HYMENOPTERA.
311
*Strongylogaster pinguis Norton.
Egg. — Laid in nearly circular saw-cuts under the upper epidermis in tlie middle
of the leaf.
First stage? — Head as in the next stage, but the clypeus entirely black ; width
.35 mm. (probably an error; .5 is the calculated width), smooth, annulate, the
poin ts on joint 2 indicated ; subventral region a little scalloped ; color pale green¬
ish, food giving a darker shade.
Second stage? — Head conical, high, the apex curiously pointed, blackish brown,
pale below; eye black ; width .6 mm. (= .7?). Thorax a little enlarged, subven¬
tral region protruding, fluted, applied close to the leaf ; segments obscurely an¬
nulate; feet on joints 6-13; pale green, with an olivaceous tinge, not shining,
the whole dorsal region blackish, defined at the lateral edge : a pair of colorless
elevated flaps in place of the cervical shield ; small black anal points.
Third stage. — Head conical, round-pointed at the apex, sutures indistinct ; ma¬
hogany red. pale around the mouth ; ocellus black ; width 1.1 mm. (= 1.0 mm. ?).
Two conical processes on the first annulet of joint 2 and a single median one just
behind them on the third annulet of 2. On joint 13 a small subdorsal point and
four such on the edge of the segment posterierly; subventral folds fluted, with
pointed concolorous tubercles; segments obscurely 7-annulate with indications of
pointed tubercles snbdorsally; color not shining, yellowish olivaceous from the
food showing through the pale yellowish body ; a defined black lateral line, be¬
ginning on joint 2 behind the points and ending on joint 13 behind the points
there.
Fourth stage. — Head 1.4 mm. ; segments 6-annulate ; subdorsal points on the
second and fourth annulets and six on the subventral fold are distinct ; otherwise
as before.
Fifth stage. — As before; width of head 2.0 mm.; a blackish cloud at the apex
of head.
Sixth stage. — Of the same shape as before, but without any tubercles, all shining
sordid yellowish in color without marks. Head a shade more reddish than the
body; width as before. The folds of the body have a tarry-brown shade. In
this stage the larva; do not eat, but enter the ground to form cells for hibernation.
On the birch and linden at Keene Valley, N. Y. The larvse sit
flat on the venter on the surface of the leaf, solitary ; also on the
birch, sugar plum and maple at Jefferson, Highlands, 1ST. H.
These curious larvse are very unlike most Strongylogaster larvse.
Strongylogaster si I>noriii is Provanclier. Larva. — Head whitish, upper
half gray, except posteriorly ; a brown band over the clypeus between the eyes;
eye in a black spot; width 1.2 mm. Body segments 6-annulate, smooth, not
shining; dorsal area above spiracle, except on joint 13, leaf-green ; a dorsal and
lateral gray shade, the latter bounding the green area, often faint or absent ; sub¬
ventral region and venter whitish ; joint 13 dorsally pale green, contrasting.
Thoracic feet moderately large, pale; abdominal ones on joints 6-13; antennae
distinct below eye, pale ; minute white points are situated on the second and
fourth annulets, one in the anterior row and two in the posterior above the stig-
matal line, then two points below it and smaller ones on the substigmatal folds.
Last stage. — Head shining, pale, the upper half and clypeus brown, the marks
cut in a reticulate manner with fine pale lines. Body shining, without points,
TRANS. AM. ENT. SOC. XXII.
SEPTEMBER. 1895.
312
HARRISON G. DYAR,
6-annulate, green to the spiracles, waxy greenish below, marked with tar-brown
in the folds ; spiracles black. Thoracic feet clear ; eye on a black spot. On at¬
taining this stage the larva: bored in soft wood to pupate.
Sitting flat on the venter or curled spirally on the back of a leaf
of the dock ( Rumex ).
Common along West End Avenue, New York City, in the vicinity
of unoccupied building lots.
Strongylogaster apicalis Say. Larva. — Head large, shining, oc.herous,
a little brownish on vertex and clypeus; eye in a black spot; jaws black ; width
2.2 mm. Feet moderate, abdominal ones the larger, present on joints 6-13 ; dorsal
region not shining, greenish, with a little trace of white bloom, ending in a lateral
smoky black line more or less distinct ; below this line the venter and legs honey-
yellow, a little suffused by white bloom, immaculate, or with dusky black dots on
the subventral folds ; segments indistinctly 6-annulate, the folds showing as
whitish creases. Larva rolls up in a ball and falls off the leaf at the slightest
provocation.
Last stage (hibernation). — Shining, annulate, green above, whitish below, with
a trace of gray marking laterally at the joining of the colors. Head as before.
The larva passes the Winter in a cell in the ground.
Food-plant. — Raspberry (Rub us).
Tentliredo ( rcssou i Kirby. Larva. — Head very pale, slightly testaceous,
shining, a brown ocherous shade at vertex, cut (under a lens) by three pale lines,
the middle one representing the suture; width 2.4 mm. ; segments 4-6 annulate,
on second and fourth (or first and third) annulets some very minute white points,
two on annulet 2, five on annulet 4, the last substigmatal, and another substig-
matal on annulet 3 ; none on the subventral folds. Body not shining, whitish,
with a green tinge, varying to pale yellowish green, quite translucent; a shaded
subdorsal yellowish band, composed of fat granules lying under the skin, dis¬
tributed in all the annulets; food not showing greatly, dark; claws of the tho¬
racic feet brown ; abdominal feet on joints 6-13. Thorax somewhat enlarged.
Last stage. — Smooth, shining light green, annulate, no tubercles; a row of small,
dark, segmentary subdorsal patches ; otherwise as before. The larvae enter the
ground and form a cell for hibernation.
Found on the white birch at Keene Valley, sitting on the leaves,
curled spirally. Easily, drops off if disturbed. The same larva oc¬
curred on white birch at the upper limit of its growth below the
summit of Mt, Washington, N. H. (about two and a half miles down
the carriage road).
Mr. MacGillivray remarks : The specimen does not agree perfectly
with Kirby’s description, yet it does not seem to depart far enough
to consider it a distinct species.
NORTH AMERICAN NEUROPTERA.
313
1VEW KEUROPTEROID INSECTS.
BY NATHAN BANKS.
Perla (rivittala nov. sp. — Length 14 mm. Head fulvous, with a large
trilobed black spot above, the upper lobe largest and covering the ocelli, the lower
lobes extending toward the antennae; below a black V-shaped spot with the apex
upward. Antennae and mouth-parts black; a black spot behind each eye; pro-
thorax slightly broader in front than behind, its angles rounded; fulvous, with
the side margins very broadly black, a narrow black median stripe, and the an¬
terior margin narrowly black ; rest of thorax fulvous, mostly covered with large
black spots. Legs fuscous, with a pale yellowish elongate spot in front and behind
on all femora and on posterior tibia}. Abdomen brown, a pale stripe on venter,
setae dark brown. Wings brownish, veins blackish, transversals at end of discal
cells nearly opposite, radial sector forked but once, upper fork much more than
twice as long as pedicel beyond transversals, three transversals between the
postcubiti.
One male, Michigan Agricultural College, Michigan, C. F. Baker
collector.
C ll 1 oropcrla borealis ncv. sp. — Length 14 mm. Yellowish ; head a little
broader than the prothorax, pale yellow, with a dark V-shaped mark connecting
the ocelli, two dark spots in front, and a small reddish tubercle each side; palpi
blackish, antennae fuscous, yellowish at base ; prothorax short, twice as wide as
long, a little broader in front than behind, the angles broadly rounded ; pale
yellow, the elevated margin blackish, each side a little rugulose and brownish ;
rest of thorax and the abdomen brown. Legs brownish yellow, a transverse
black line at ends of femora ; setae short, yellowish in middle, brownish at ends.
Wings greenish yellow, veins of anterior pair, except subcosta and radius, brown¬
ish (in one wing there are two transversals beyond subcosta, but one is bent and
appears abnormal), transversals at end of discal cells are opposite each other, and
the upper fork of radial sector is more than twice as long as the pedicel beyond
these, there are five transversals between the cubiti.
One female, Olympia, Wash., April (Trevor Kincaid). A male
from Ft. Collins, Colo., is smaller, 10 min., and the radius is only
yellowish toward base, the transversals at end of discal cells are
slightly separated, and the forks of radial sector are not quite so
long, otherwise it is like the female.
Chloroperla pacifica nov. sp. — Length 10-12 mm. Yellowish, head a
little broader than prothorax, pale yellow, ocelli black. Antenna} yellowish,
palpi brownish ; prothorax short, fully twice as wide as long, the anterior angles
moderately prominent, the posterior ones broadly rounded, the side margins dis¬
tinctly black, within slightly rugulose. Legs pale yellow, with a black transverse
line at ends of femora. Thorax yellowish, an oblique black suture on meta- and
mesothoracic pleura. Abdomen yellowish. Wings pale yellowish, all veins yel¬
lowish, the transversals at end of discal cells are opposite to each other, the upper
fork of radial sector is one and one-half times as long as the pedicel beyond
transversals; there are four or five transversals between the cubiti.
Three specimens, Skokomish River, Wash., May (T. Kincaid).
C'liloroperla imhccilla Say.
A specimen from Olympia, Wash., agrees with eastern examples
tTRANS. AM. ENT. SOC. XXII. (40) SEPTEMBER, 1895.
314
NATHAN BANKS.
of this species. The transversals at end of discal cells are separated,
and the upper fork of radial sector is at least twice as long as the
pedicel ; there are three, sometimes four, transversals between the
cubiti.
< 'liloropvrla sijjiiata nov. sp. — Length 7.5 mm. Yellow, head slightly
broader than prothorax, pale yellow, a black triangular spot connecting the ocelli,
another smaller triangular spot below with its apex nearly touching the apex of
the upper spot; palpi brownish. Antenme yellowish; prothorax short, elliptical,
pale yellow, with a prominent black median stripe, which is slightly broader
behind, and on the front margin twice as broad as in the middle, sides slightly
rugulose; meso- and metathorax with an indistinct, median, brown stripe. Legs
pale yellowish, tibiae more brownish. Abdomen yellowish, apex broken. Wings
yellowish hyaline, veins in fore wings, except subcosta and most of radius, brown ;
transversals at end of discal cells widely separated, upper fork of radial sector
hardly one and one-half times as long as the pedicel beyond the outer transversal,
four transversals between cubiti ; some of the veins of posterior wings brownish
at tips.
One specimen, Ft. Collins, Colo. (C. P. Gillette).
Clioroperla brevis nov. sp. — Length 6 mm. Greenish yellow, head a
little broader than thorax, antenme with basal third yellowish beyond black;
prothorax with a fuscous stripe on each side margin, once and one-half as long as
broad, barely broader in front, angles rounded, scarcely rugulose; tarsi slightly
fuscous. Wings nearly hyaline, with greenish veins, transversals at end of discal
cells disjointed, the upper fork of rad ial sector is not as long as the pedicel beyond
these transversals (in one specimen it is just as long), three transversals between
the cubiti.
Sherbrooke, Canada (L’abbe F. A. Begin).
Jlegaloiiius nuestiis nov. sp. — Length 7 mm. Antenme a little longer
than breadth of wings. Wings quite broad, but over twice as long as broad ; mar¬
gin ciliate, costal area strongly dilated toward base, costal veinlets forked, radius
with six branches, the last forked at or before first gradate series ; two gradate
series, first across middle of wing, indented in middle, second one toward the
apex and incomplete. Antennae, legs and palpi luteous, face pale yellowish, ver¬
tex darker. Thorax yellowish, mesothorax brown on each anterior side. Ab¬
domen paler; wings hyaline, veins pale, dotted with black, around the margin
groups of veins are alternately black, a broad fuscous band across middle of wing
just inside of the first gradate series, several dark patches and an indistinct band
beyond the second gradate series; two slender, up-curved, slightly divaricate
processes project from the tip of the abdomen.
One female, Santa Fe, New Mexico, July (T. D. A. Cockerell).
.) I
Geotrupes semiopacus .Telcel
egeriei Germ.
balyi Jekel.
hornii Blanch.
Clceotus aphodioides III.
globosus Say.
Trox tuberculatus DeG.
eriuaceus Lee.
capillaris Say.
unistriatus Beauv.
insularis Chev.
terrestris Say.
sequalis Say.
scaber Linn.
striatus Mels.
Hoplia trifasciata Say.
trivialis Harold.
mucorea Germ.
modesta Hald.
Dichelonycha elongata Lee.
subvittata Lee.
fuscula Lee.
albicollis Barm.
Serica vespertina Gyll.
irieolor Say.
sericea III.
trociformis Barm.
Macrodactylus subspinosus Fab.
+ Diplotaxis liberta Germ.
frondicola Say.
Laehnosterna gibbosa Barm.
inversa Horn.
micans Knock.
vehemens Horn.
arcuata Smith,
cephalica Lee.
insperata Smith,
dubia Smith.
fusca Knoch.
Laehnosterna *barda Horn.
marginalis Lee.
fraterna Harris.
rugosa Mels.
innominata Smith.
balia Say.
villifrons Lee.
nitida Lee.
hirticula Knoch.
illicis Knoch,
crenulata Froel,
tristis Fab.
Anomala undulata Mels.
lucicola Fab.
marginata Fab.
Strigoderma arboricola Fab.
Pelidnotata punctata Linn.
Cotalpa lanigera Linn.
Polymoechus brevipes Lee.
Chalepus trachypygus Barm.
Ligyrus relictus Say.
Apbonus tridentatus Say.
Xylorictes satyrus Fab.
X Dynastes tityus Linn,
Allorliina nitida Linn.
Euphoria sepulchral is Fab.
fulgida Fab.
inda Linn.
Cremastochilus variolosus Kirby.
canaliculatus Kirby.
harrisii Kirby.
Osraoderma eremicola Knoch.
scabra Beauv.
Gnorimus maculosus Knoch.
Trichius piger Fab.
affinis Gory.
bibens Fab.
Valgus oanuliculatus Fab.
squamiger Beauv.
SPONDYLID^E.
Parandra brunnea Fab.
CEEAMBYCID^l.
Orthosoma brunneum First.
Prionus laticollis Drary.
imbricornis Linn.
X Tragosoma depsarium Linn.
harrisii Lee.
Sphenostethus taslei Buq.
TRANS. AM. ENT. SOC. XXII. (,43)
Asemum mcestum Hold,
Criocephalus agrestis Kirby.
Tetropium cinnamopterum Kirby.
Smodicum cucuj forme Say.
Physocnemum brevilineum Say.
Rhopalopus sanguinicollis Horn.
OCTOBER, 189o,
JOHN HAMILTON, M. D.
338
Phymatodes variabilis Fab.
am cen us Say.
dimidiatus Kirby.
varius Fab.
Merium proteus Kirby .
% Callidium antennatum Newm.
tereum Newm.
Dryobius sexfasciatus Say.
Gracilia minuta Fab.
Stromatium pubescens Halil.
Chion cinctus Drury.
var. garganieus Fab.
Eburia quadrigeminata Say.
Romaleum atomarium Drury.
rufulum Hald.
Elaphidioti mucronatum Fab.
incertum Newm.
villosum Fab.
parallelum Lee.
cinerascens Lee.
Tylonotus bimaculatus Hald.
Heteracbthes 4-maculatus Newm.
Obi'ium rubrum Newm .
rubidum Lee.
Molcchrus bimaculatus Say.
Callimoxys sanguinicollis Oliv.
Rhopalopliora longipes Say.
Purpuricenus humeralis Fab.
axillaris Hold.
Batyle suturalis Say.
Stenosphenus notatus Oliv.
Cylleue pietus Drury.
robin ise Forst.
Plagionotus speciosus Say.
* Call (tides nobilis Say.
Arhopalus fulminans Fab.
Xylotrechus colonus Fab.
Sagittarius Germ.
quadrimaculatus Hald.
undulatus Say.
* nitidus Horn.
Neoclytus scutellaris Oliv.
luscus Fab.
caprsea Say.
erythrocephalus Fab.
Cly tan thus ruricola Oliv.
albofasciatus Lap.
Microclytus gazellula Hald.
Cyrtophorus verrucosus Oliv.
Euderces picipes Fab.
Distenia undata Oliv.
Desmocerus palliatus Forst.
Necydalis mellita Say.
Encyclops cseruleus Say.
Rhagium inquisitor var.
lineatum Oliv.
Cent rod era decolorata Harr.
picta Hald.
sublineata Lee.
Toxotus schaumii Lee.
trivittatus Say.
vittiger Rand,
cylindricollis Say.
cinnamopterus Rand.
Pachyta monticola Rand.
Anthophilax malachiticus Hald.
* attenuatus Hald.
Aenueops bivittata Say.
directa Neum.
Gau rotes cyanipennis Say.
abdominal is Bland.
\ Bellamira scalaris Say.
Strangalia famelica Newm.
acuminata Oliv.
luteicornis Fab.
bicolor Swed.
Typocerus zebratus Fab.
velutinus Oliv.
lugubris Say.
Leptura emarginata Fab.
subhamata Rand.
var. elegans Lee.
lineola Say.
rubida Lee.
chalybsea Hald.
capitata Newm.
nana Newm.
var. haematites Newm.
exigua Newm.
nitens Forst.
cordifera Oliv.
* nigrella Say.
canadensis Kirby.
rubrica Say.
vagans Oliv.
circumdata Oliv.
proxima Say.
biforis Newm. .
octo-notata Say.
vittata Oliv.
COLEOPTERA OF SOUTHWESTERN PENNSYLVANIA.
339
Leptura pubera Say.
ruficollis Say.
var. sphsericollis Say.
vibex Newm.
au rata Newm.
mutabilis Newm. and var.
Cyrtinus pygmseus I laid.
Psenocerus supernotatus Say.
Monohammus titillator Fab.
scutellatus Say.
confusor Kirby.
Dorcaschema wildii IThler.
alteruatum Say.
nigrum Say.
Hsetomis cinerea Oliv.
Goes tigrina DeG.
puleli ra Hald.
debilis Lee.
tessellata Hald.
pulverulenta Hald.
oculata Lee.
Plectrodera scalator Fab.
Acanthoderes decipiens Hald.
quadrigibbus Say.
Leptostylus aculiferus Say.
parvus Lee.
perplexus Hald.
macula Say.
Liopus variegatus Hald.
alpha Say.
panctatus Hald.
Dectes spinosus Say.
Lepturges angulatus Lee.
signatus Lee.
querci Fitch.
facetus Say.
Hyperplatys aspersus Say.
maculatus Hald.
Urographis fascia ta DeG.
Ecyrus dasycerus Say.
Eupogonius tomentosus Hald. ■
vestitus Say.
subarmatus Lee.
Oncideres cingulatus Say.
Saperda cal ca rata Say.
Candida Fab.
cretata Newm.
fayi Bland.
vestita Say.
discoid ea Fab.
tridentata Oliv.
lateralis Fab.
puncticollis Say.
con color Lee.
Obera bimaculata Oliv.
var. 3-pun eta ta || Fab.
var. basalis Lee.
tripunctata Sired,
amiabilis Hald.
ruficollis Fab.
j Tetraopes canteriator Drap.
tetraopbthalmus Foret.
Donacia palmata Oliv.
piscatrix Lee.
subtilis Kunse.
sequalis Say.
emarginata Kirby.
jucunda Lee.
Orsodacna atra Ahr.
Zeugophora varians Or.
Syneta ferruginea Germ.
Lcma trilineata Oliv.
Anomoea laticlavia Foret.
Coscinoptera dominicana Fab.
Babia quadriguttata Oliv.
Chlamys plicata Fab.
Exema dispar Lac.
Bassareus congestus Fab.
CHRYSOMEL1D JE.
Bassareus formosus Mele.
var su If u ripen nis Mele.
mammifer Newm.
var. sellatus Stiff.
var. pretiosus Mels.
var. luteipennis Mele.
lituratus Fab.
Cryptocephalus notatus Fab.
4-macidatns Say.
quadruplex Newm.
guttulatus Oliv.
venustus Fab. and var.
var. simplex Hald.
gibbicollis Hald.
mutabilis Mels.
tinctus Lee.
TRANS. AM. ENT. SOC. XXII.
OCTOBER, 1895.
340
JOHN HAMILTON, M. D.
Pachybrachys otlionus Say.
pubescens Oliv.
vidmtus Fab.
picturatus Germ.
trinotatus Mels.
tridens Mels.
carbonari us Hald.
luridus Fab.
atomarius Mels.
feraoratus Oliv.
iufaustus Hald.
bepaticus Mels.
dilatatus Suff.
three spec, undetermined.
Monachus ater Hald.
saponatus Fab.
Diachus auratus Fab.
pallidicornis Suff.
Triachus atomus Suff.
Fidia longipes Mels.
Xanthonia 10-notata Say.
villosula Mels.
Glyptoscelis pubescens Fab.
barbata Say.
Graphops pubescens Mels.
curtipennis Mels.
marcassita Cratch.
Typophorus viridicyaneus Cr.
canellus Fab.
var. aterrimus Oliv.
var. thoracicus Mels.
var. quadrinotatus Say.
var. sellatus Horn.
var. quadriguttatus Lee.
var. sexnotatus Say.
Chrysochus auratus Fab.
Tymues tricolor Fab.
violaceus Horn.
metasternalis Crotch.
Colaspis brunnea Fab.
Rhabdopterus picipes Oliv.
Nodonota tristis Oliv.
eouvexa Say.
puncticollis Say.
Ghrysodina globosa Oliv.
Doryphora clivicollis Kirby.
10-lineata Say.
Chrysomela suturalis Fab.
similis Royers.
prascelsis Roy.
Chrysomela elegans Oliv.
scalaris Lee.
ph i lad elphiaca Linn.
var. spiraea* Say.
bigsbyana Kirby.
Plagiodera viridis Mels.
Gastroidea polygoni Linn.
eyanea Mels.
Melasoma lapponica Linn.
scripta Fab.
Pbyllodecta vulgatissima Linn.
Trirhabda canadensis Kirby.
Galerucella tuberculata Say.
cavicollis Lee.
rufosanguinea Say.
notulata Fab.
notata Fab.
nymph fese Linn.
Diabrotica 12-punctata Fab.
vittata Fab.
Luperodes varicornis Lee.
thoracicus Mels.
meraca Say.
cyanellus Lee.
Phyllechthrus gentilis Lee.
Galeruca externa Say.
Cerotoma 3-furcata Forst.
caminea Fab.
Blepharida rhois Forst.
Oedionychis gibbitarsus Say.
t.horacica Fab.
vians III.
thyamoides Crotch.
limbalis Mels.
var. subvittata Horn.
6 maculata Linn. ■
quereata Fab. and var.
Homcphceta lustrans Crotch.
Disonycha pennsylvanica III.
var. pallipes Crotch.
caroiiana Fab.
glabrata Fab.
discoidea Fab.
triangularis Say.
xanthomelama Dalm.
Haltica chalybea Illig.
ignita III. and var.
Orthaltica copalina Fab.
Crepidodera rufipes Linn.
helixines Linn.
COLEOPTERA OF SOUTHWESTERN PENNSYLVANIA.
341
Crcpidodera atriventris Mels.
Epitrix cucumeris Harr.
Mantura floridana Crotch.
Chsetocneina cribrata Lee.
subcylindrica Lee.
minuta Mels.
con I'm is Crotch.
Systena liudsonias Forst.
frontalis Fab.
beni a ta Say.
var. blanda Mels.
marginalis III.
Glyptina spuria Lee.
Phyllotreta sinuata Steph.
vittata Fab.
bipustulata Fab.
picta Say.
Luperaltica senilis Lee.
fuscula Say.
Longitarsus testaceus J Ids.
melanurus Mels.
Dibolia borealis Chev.
Psylliodes punctulata Mels.
Microrbopala porc.ata Mels.
Odontota dorsalis Thunb.
rubra Web.
nervosa Pans.
Stenispa metallica Fab.
Physonota unipunctata Say.
Cassida nigripes Say.
bivittata Say.
Coptocycla bicolor
aurichalcea Fab.
signifera Herbst.
guttata j Oliv.
purpurata Bohm.
clavata Fab.
Cbelymorplia argus Lieht.
Bruchus pisorurn IJnn.
mimus Say.
discoideus Say.
BRUCHIDJE.
alboscutellatus Horn.
calvus Horn.
obtectus Say.
TENEBRIONIDiE.
Phellopsis obcordata Kirby.
Alobates pennsylvanicus I)e(J.
barbatus Enoch.
Iphtbimus opacus Lee.
Merinus be vis Oliv.
J Upis ceramboides Linn.
Haplandrus fem o rat us Fab.
ater Lee.
Scotobates calcaratus Fab.
Xylopinus saperdioides Oliv.
fenescens Lee.
Tenebrio obscurus Fab.
molitor Linn.
castaneus Enoch.
tenebrioides Beauv.
Opatrinus notus Say.
Blapstinus metallicus Fab.
mcestus Mels.
Tribolium ferrugineum Fab.
madens Charp.
Dicedus pu uctatus Lee.
Echocerus maxillosus Fab.
Alpbitobius diaperinus Pans.
Ulorna impressa Mels.
imbellis Lee.
men tabs Horn.
Uloma punctulata Lee.
Eutochia picea Mels.
An ted us brunneus Zieg.
Paratenetus punctatus Sol.
fuscus Lee.
Diaperis maculata Oliv.
Arrhenoplita viridipennis Fab.
bicornis Oliv.
Platydema excavatum Say.
ruficorne Sturm.
flavipes Fab.
ellipticum Fab.
americanum Lap.
subcostatum Lapl.
Alpbitophagus bifasciatus Say.
Hypoplilceus parallelus Mels.
thoracicus Mels.
Pentaphyllus pallidus Lee.
Boletotberus bifurcus Fab.
Boletopbagus eorticola Say.
depressus Rand.
Helops micans Fab.
americanus Beauv.
fereus Germ.
Meracantba contracta Beauv.
Strougylium tenuicolle Say.
TRANS. AM. ENT. SOC. XXII.
OCTOBER. 1895.
JOHN HAMILTON, M. D.
342
Allecula punctulata Mels.
atra Say.
nigrans Mels.
Hymenorus pilosus Mels.
obscurus Say.
liiger Mels.
communis Lee.
rufipes Lee.
humeralis Lee.
Cistela brevis Say.
* marginata Zieg.
sericea Say.
CISTELID.E.
Isomira quadristriata Coup.
ruficollis Ham.
Mycetochares rufipes Lee.
laticollis Lee.
haldeuiani Lee.
foveatus Lee.
tenuis Lee.
lugubris Lee.
binotatus Say.
Chromatia amcena Say and var.
Capnochroa fuliginosa Mels.
Androchirus fuscipes Mels.
Arthromacra ;enea Say.
var. (golden colored)
LAGRIIDiE.
Statira gagatina Mels.
MELANPRYIDiE.
Tetratoma truncorum Lee. Spilotus 4-pastulosus Mels.
tessellata Mels.
Penthe obliquata Fab.
pimelia Fab.
Syncbroa punctata Newm.
Eustrophus confinis Lee.
bicolor Say.
tomentosus Say.
Holostrophus bifasciatus Say.
Hallomenus scapularis Mels.
Orchesia oastanea Mels.
Melandrya striata Say.
Emmesa labiata Say.
*' Zilora hispida Lee.
* Carebara longula Lee.
Mystaxis simulator Newm.
* Enchodes sericea Hold.
Serropalpus barbatus Schall.
Hypulus lituratus Lee.
vaudoueri Mnls.
Sympbora flavicollis Halil.
rugosa Hold.
Scrap tia sericea Mels.
Canifa plagiata Mels.
pusilla Hold.
pallipes Mels.
Nothus varians Lee.
Lecontia discicollis Lee.
Boros unicolor Say
* Pytho depressus Linn.
PYTHIDiE.
Pytho planus Oliv.
Salpingus virescens Lee.
* Ithinosimus viridiseneus Rand.
Micro ton us sericans Lee.
Nacerdes melanura [Ann.
OEDEMERIDiE.
Asclera ruficollis Say.
puncticollis Say.
Cephaloon lepturides Newm.
CEPHALOID.ZE.
COLEOPTERA OF SOUTHWESTERN PENNSYLVANIA.
34
MORDELLIDiE.
Pentaria trifasciata Mels.
Mordelistena lepidula Lee.
Anaspis nigra Hald.
ornata Mels.
flavipennis Hald.
scapularis Say.
rufa Say.
comata Lee.
Tomoxia bidentata Say.
aspersa Mels.
lineella Say.
tosta Lee.
inclusa Lee.
ustulata Lee.
hilaris Say.
nigricans Mels.
Mordella melsena Fab.
guttulata Helm.
octopunctata Fab.
p ustulata Mels.
margin ata Mels.
ambusta Lee.
serval Say.
unicolor Lee.
oculata Say.
marginalia Say.
triloba Say.
pubescens Fab.
undulata Mels.
liturata Mels.
discoidea Mels.
fuscata Mels.
Mordelistena lutea Mels.
pityptera Lee.
trifasciata Say.
attenuata Say.
Eurygenius murinus Hald.
ANTHICIDJE.
Notoxus bifasciatus Lee.
wildii Lee.
monodon Fab.
Corphyra canaliculata Lee.
anchora Hentz.
terminalis Say.
Tomoderus constrictus Say. '
labiata Say.
Anthicus obscurus Laf.
lugubris Say.
cinctus Say.
col laris Say.
rejectus Lee.
Xplopliilus basalis Lee.
floral is Linn.
nebulosus Lee.
formicarus Goese.
fasciatus Mels.
basilaris Say.
subfasciatus Lee.
vicinuus Laf.
piceus Lee.
confusus Lee.
Macratria confusa Lee.
cervinus Laf.
murina Fab.
pubescens Lee.
Notoxus bicolor Say.
Pyrocliroa flabellata Fab.
PYROCHROIDJE.
Dendroides canadensis Latrl.
femoralis Lee.
concolor Newm.
Dendroides bicolor Newm.
Melee angusticollis Say.
MELOIDJE.
Epicauta vittata Fab.
americanus Leach.
lemnistica Fab.
Nemognatha nemorensis Herd:
cinerea Forst.
Macrobasis nnicolor Kirby.
pennsylvanica DeG.
Epicauta triebrus Pallas.
Pomphopcea senea Say.
TEANS. AM. ENT. SOC. XXII.
OCTOBER, 1895.
344
JOHN HAMILTON, M. D.
Myodites fasciatus Say.
RHIPIPHORIDiE.
RHYNCHITID-® .
Auletes ater Lee. Rhinchites bicolor Fab.
Eugnamptus angustatus Hbst. Pterocolus ovatus Fab.
col laris Lee.
ATTELi ABIDES.
Attelabus aualis III. Attelabus rbois Bohn.
bipustulatus Fab.
OTIORHYNCHIDiE .
Anametis granulatus Say.
grisea Horn.
Phyxelis rigirlus Say.
Otiorhynchus sulcatus Fab.
ovatus Linn.
Cercopeus chrysorhceus Say.
Tanycemus confertus Gyll.
Pandeletejus hilaris Hbst.
Aphrastus tseniatus Gyll.
Polydrosus dorsalis Horn.
Scythropus elegans Coup.
CURCULIONIDAi!.
Sitones flaveseens Marsh.
bispidulus Germ.
Lepidophorus setiger (infra).
Ithycerus noveboracensis Forst.
Apion decoloratum Smith.
herculanum Smith.
nigrum Hbst.
five spec, undetermined.
Phytonomus punctatus Fab.
Listronotus. squamiger Say.
insequalipennis Bohn.
caudatus Say.
appendiculatus Bohn.
frontalis Lee.
Macrops solutus Bohn.
sparsus Say.
bumilis Gyll.
Pissodes strobi Peck.
Hylobius pales Hbst.
Lixus terminalis Lee.
concavus Say.
musculus Say.
Dorytomus mucidus Say.
brevicollis Lee.
Erycus puncticollis Lee.
Pachypbanes amcenus Say.
Smicronyx morio Diets.
sculpticollis Diets.
Smicronyx maculatus Diets.
corniculatus Fab.
squamulatus Lee.
Endalus ovalis Lee.
Tanysphyrus lemn'se Fab.
Bagous n. s.
Otidocepbalus myrmex Hbst.
scrobicollis Bohn.
cbevrolatii Horn.
laevicollis Horn.
* perforatus Horn.
Magdalis barbita Say.
olyra Hbst.
pan dura Say.
armicollis Say 9 •
pallida Say %, .
n. s.
Tachypterus quadrigibbus Say.
Anthonomus profundus Lee.
nebulosus Lee.
sycophanta Walsh.
suturalis Lee.
flavieornis Bohn.
corvulus Lee.
signatus Say.
var. pallidus Diet
musculus Say.
scutellatus Gyll.
COLEOPTERA OF SOUTHWESTERN PENNSYLVANIA.
34
Anthonomopsis mixtus Lee.
Pseudanthonomus cratsegi Walsh.
incipiens Dietz.
Elleschus scanicus Payh.
ephippiatus Say.
Orc.hestes ephippiatus Say.
niger Horn.
armatus Dietz.
pallicornis Say.
Acalyptus carpini Herbst.
Prionomerus calceatus Say.
Piazorhinus scutellaris Say.
pictus Lee.
Thysanocnemis fraxiui Lee.
helvolus Lee.
Gymnetron tetrimi Fab.
Miarus hispid ulus Lee.
Lsemosaccus plagiatus Fab.
Conotrachelus juglandis Lee.
nenuphar Hbst.
retentus Say.
seniculus Lee.
elegans Say.
cratsegi Walsh.
postiacus Bohm.
geminatus Lee.
cribricollis Say.
anaglypticus Say.
Rhyssematus palmacollis Say.
lineaticollis Say.
sequalis Horn.
* Microhyus setiger Lee.
Acalles sordidus Lee.
? curt us Ham.
Tyloderma foveolatum Say.
fragrarjge Riley.
sereum Say.
Oryptorhynchus parochus Hbst.
bisignatus Say.
minutissimus Lee.
fallax Lee.
ferratus Say.
Piazurus oculatus Say.
Piazurus subfasciatus Lee.
Copturus quercus Say.
binotatus Lee.
J minutus Lee.
Acoptus suturalis Lee.
Craponius inaequalis Say.
Coeliodes nebulosus Lee.
flavicaudis Bohm.
acephalus Say.
Acallodes ventricosus Lee.
Ceutorhynchus rapse Gy II.
sulcipennis Lee.
u. s.
septentrionalis Gyll.
Pelenomus sulc.icollis Fab.
squamosus Lee.
Rhinoncus pyrrhopus Bohm.
Baris umbilieata Lee.
interstitialis Say.
con finis Lee.
Plesiobaris T. sigaium Bohm.
Glyptobaris rugicollis Lee.
Ampeloglypter ater Lee.
Madarellus undulatus Say.
Pseudobaris nigrina Say.
Trichobaris trinotata Say.
Centrinus picumnus Hbst.
scutellum-album Say.
Centrinopus helvinus Casey.
Nicentrus lineicollis Bohm.
decipieus Lee.
Limnobaris calva Lee.
recti rostris Lee.
Idiostetbus tubulatus var.
strigapunctus Hamilton.
Balaninus obtusus Blanchard.
uniformis Lee.
nasicus Say.
car v;e Horn.
quercus Horn.
rectus Say.
proboscideus Fab.
confusor Ham.
Eupsalis minuta Drury.
BRENTHID^E.
TRANS. AM. ENT. SOC. XXII.
(44)
OCTOBER, 1895
JOHN HAMILTON, M. I).
346
CALANDRIDiE.
Rhodobsenus tredecimpunctatus III.
Sphenophorus sculptilis Uhler.
melanocephalus Fab.
placid us Say.
minimus Hart.
Calandra oryzse Linn.
granaria IAmn.
remotepunctata Gyll.
Dryophthorus americanus Bedel.
Dryophthorus cortical in || Say.
Himatium errans Lee.
conicum Lee.
Cossonus platalea Say.
corticola Say.
impressifrons Bohm.
Stenomimus pallidus Bohm.
Phloeophagus apionides Horn.
Corthylus punctatissimus Zimin.
Monarthrum fasciatum Say.
mali Fitch.
Gnathotrichus materiarius Fitch.
Pityophthorus sparsus Lee.
pu be i'll lus Lee.
Hypothenemus cruditus West.
dissimilis Lee.
Xyloterus politus Say.
Xyleborus dispar Fab.
celsus Ficli .
Xylograph us Say.
pnbescens Linn.
cselatus Eich.
Tomicus cacographus Lee.
SCOLYTID JE.
Tomicus pini Say.
Micracis sutural is Lee.
aculeata Lee.
rudis Lee.
Scolytus quadrispinosus Say.
muticus Say.
rugulosus Rats.
n. s. ( Schwarz )
Chramesus icorise Lee.
Phloeotribus frontalis Oliv.
Hylesinus opaculus Lee.
Cnesinus strigicollis Lee.
Dendroctonus terebrans Oliv.
Hylastes tenuis Zimm.
Eurymycter fasciatus Oliv.
Allandrus n. s.
Hormiscus saltator Lee.
Eusphyrus walshii Lee.
ANTHRIBIIDiE.
Cratoparis lunatus Fab.
Brachytarsus alternatus Say.
tomentosus Say.
variegatus Say.
Description of New Species.
My rmetlonia sclimil ti. — Parallel, black, shining, basal joint of antennae,
legs and triangle on each elytron rufous, pubescence of thorax and elytra very
inconspicuous, that of ventral segments coarser. Length .1H mm. Head small,
shining black, alutaceous, constricted at base; antennae brown exteriorly, loosely
perfoliate from third joint, first joint nearly three times longer than second and
subclavate, second thinner, third more than twice longer and clavate, 4-5 as long
as second, and slightly longer than wide, 6-10 transverse and gradually incrassate,
eleventh as long as preceding two, and acutely conical. Thorax twice wider than
long, sides and base broadly arcuate, and with a very fine continuous margin,
base suddenly depressed each side of middle causing a bisinuate and lobed ap¬
pearance, shining, punctuation fine, reticulo-strigose, no dorsal impressions, except
COLEOPTERA OF SOUTHWESTERN PENNSYLVANIA.
347
a slight appearance of a dorsal line. Elytra as wide as thorax, not longer, suture
not impressed, punctuation same as that of thorax, hut coarser; sides and a hasal
triangle blackish, a triangle on each elytron pointing at humerus rufous as seen
in certain Aleochara : base arcuately emarginate to admit the thorax. Abdomen
as wide as elytra, sides parallel, deeply margined, first three segments concave,
black shining with a few setigerous punctures; underside shining black, ventral
segments punctate, but not very finely ; middle coxae widely separated, rnesos-
ternum wide and divided into three equal parts by two oblique lines deeply im¬
pressed anteriorly, hut evanescent posteriorly (sub-trilobed), separated from the
metasternum by an accessory piece.
Characterized from four examples without apparent sexual dis¬
tinction. Occurs not infrequently near St. Vincent, where it is taken
always with ants ( Formica subserlcea Say) by Rev. Jerome Schmitt,
who kindly permits its description, and whose name it bears in com¬
memoration of his zeal in micro-entomology.
H oinaliiini llaviduni. — Rufo-testaceous throughout, shining, head
smooth, bipunctate between the antennse, which are gradually incrassate from the
second joint, and with the sixth and outer ones transverse. Thorax quadrate,
the sides slightly narrowed from middle to apex, hind angles rectangular, disc
with two longitudinal impressions not reaching apex, separated by a fine groove
reaching apex, where it is slightly dilated giving the appearance of a small im¬
pression at apex more or less visible, sides impressed at middle. Elytra a little
wider than thorax, slightly wider from base, outer angles strongly obtuse, finely
closely punctured in approximate rows producing a longitudinal suhstriolate
appearance. Abdomen parallel, and of the same width as the elytra, alutaceous.
Several examples occurred near St. Vincent.
Atomaria liunieralis. — Elongate, depressed, plumbeous-brown, legs
paler, humerus and obsolete spot near elytral apex ferruginous. Length .09 inch.
Head smooth, vertex with a deep puncture. Antenna; approximate, eighth .joint
smaller than the ninth forming the base of the club. Thorax quadrate, convex
transversely and longitudinally, finely punctulate and pubescent, margined at
base. Elytra slightly widened behind, a little wider at base than thorax and
three times longer, depressed, circularly impressed behind the scutellum, coarsely
closely punctate, pubescence fine, short, cinereous.
Two examples taken in the evening about a wood pile ; resembles
but little ochracea or ephippiata ; the elytra are of a similar form
to those of Xylophilus tuberculifer, but with coarser punctures.
Lepitlopliorus setiger. — Piceous, antennse and feet ferruginous, surface
with small round scales, elytra with rows of setse. Length .12-14 inch. Head
densely scaly, beak dilated towards tip, a little flattened above, densely scaly.
Antennse inserted near the tip, scape nearly as long as the outer part, extending
behind the eye, which is round and very small. Thorax a little wider than long,
convex, slightly narrowed anteriorly, not constricted at apex, except at sides,
densely rather coarsely punctured, each puncture with a small round scale very
fugitive, trivittate with fugitive whitish scales, surface piceous; scutellum not
TRANS. AM. ENT. SOC. XXII.
OCTOBER. 1895.
JOHN HAMILTON, M. D.
348
visible. Elytra one-half wider than thorax, not depressed, subinflated, finely
striate, with close, minute punctures in the bottom, intervals wide, flat, seemingly
impuuctate, covered with small brownish scales very inconspicuously, and each
with a row of stout yellow setae extending from base to apex, surface mottled
with fugitive pale scales: color, when divested of scales, rufo-piceous to piceous;
underside less densely scaly, piceous except feet and last three ventral segments
ferruginous. In the % the posterior part of the metasternum. first and second
ventral segments are jointly concave, the third and fourth segments together are
one-half longer than either of the preceding and equal to the fifth.
The vittse of the thorax and mottling of the elytra are only seen
ia well preserved specimens; this is likewise the case in lineaticollis,
which, apart from size, differs in having a longer beak, a different
form of thorax, larger scales, and the elytral sette only visible on
the declivity.
Occurs near St. Vincent, taken by P. Jerome Schmitt. Virginia
(Dietz).
NOTES.
CICINDELA.
C. unipunctata is rare, on paths through woody, mountainous places; patruela
not common, on old roads and paths through hilly woodlands; 12-guttata not
rare, along creeks; purpurea abundant in early Spring and in Autumn, hiber¬
nates; punctulata common, attracted by lights.
CARABIDAi!.
Cychrus. — All the species hibernate; canadensis rare, mostly taken from Sep¬
tember to November; elevatus rare, Jeannette; vidnns not uncommon here,
more common near the mountains ; ridingsii, only one example here, several
at Jeannette; andrewsi, not rare, mostly from August to December.
Nomaretus imperfectus. — One example on mountain near St. Vincent’s, by
Schmitt.
Carabus. — All the species hibernate ; serratus , not uncommon under stones in
hilly woods; limbatus, more common in same places; vinctus, alluvial places
under rubbish ; sylvosus, one. example ; several at Jeannette.
Calosoma externum. — Not common; frigidum , two examples here; several
near St. Vincent’s; scrutator and wilcoxi come abundantly at night to electric
lights in May ; calidum less frequently.
Elaphrus cicatricosus. — Not common, grassy swamps, June.
Notiophilus. — The species are not rare, under stones and rubbish, June to No¬
vember.
Pasimachus depressus. — Only three, examples, May and June.
Dyscliirius nigriceps, globulosus and sphxricoUis occur occasionally; hsemor-
rhoidalis, abundant along streams ; hispidm, abundant when found, not com¬
mon, damp alluvial places.
COLEOPTERA OF SOUTHWESTERN PENNSYLVANIA.
34(J
Clivina impressifrons. — Not uncommon along streams, likewise rufa and
americana ; bipustulata, rare along streams.
Schizog-enius lineolatus. — Not rare, banks of streams ; amphibius , less common,
under stones in streams.
Ardistomis viridis. — Only a few examples were seen, wet places.
Panag'geus fasciatus. — Not uncommon in early Spring and in Autumn under
stones on hills, frequently hibernates in ants’ nests.
Bembidium punctatostriatum and insequale common on muddy shores; ni-
tidulum || and americanum not rare ; chalceum, only three examples ; antiquum
less rare ; nigrum, simplex and guexii, abundant when found, but in few lo¬
calities, mostly along rocky streams; ustulatum, two examples; this and all
the preceding occur along the shores of creeks; picipes , abundant in the beds
of hill rivulets ; postremum, common on sandy shore of river, June and July ;
dentellum, abundant in alluvial places in grass and rubbish ; postfasciatum, not
common, gregarious, on mud flats along streams; patruele , common ; variega-
tum and versicolor less common, and all along streams: sulcatum, not common,
in grass about ponds and swamps ; affine and assimile, abundant in grassy
swamps and alluvium ; quadrimaculatum , all situations ; pedicel' atmn, not
common, wet grassy places; tsevigatum, sandy beaches, June and July.
Tachys proximus, scitulus and coruscus, humid places; Isevis, not rare; nanus
and flavicauda under bark ; vivax, capax, xanthopns, incurvus, nebulosus and an
indeterminate, occur along the shores of streams and in nearly all humid
places.
Pericompsus ephippiatus. — Common on mud flats.
Patrobus longicornis. — All wet places.
Myas coracinus. — Not uncommon on hills in woods; cyanescens, two examples :
more frequent near the mountains.
Pterosticbus adoxus Say. — Common, breeds in decaying logs ; rostratus, same
habits, only four examples, more common towards the mountains; vinctus,
not common, found in colonies, woody hills; unicolor, only one example on a
high ridge; apalachius, hillside rivulets, July to October; honestus breeds in
decaying wood ; obscurus, not common, under stones on hills; lachrimosus, not
common, breeds in rotting wood ; coracinus more common, moist woodland
hills; stygicus, everywhere; relictus, local, slaty, moist ravines and hills;
mcestus, not rare, breeds in rotting logs ; sculptus , two examples under stones,
common along the mountains; hamiltoni, under stones on hills; sayi, rank
herbage on alluvial places; lucublandus . everywhere; caudicalis, luctuosus ,
under rubbish in damp places; corvinus, breeds in swamps; tartaricus, two
examples at lights; purpuratus, abundant where found, rich hills, September
and April ; mutus. under stones in woods and fields; erythropus, not rare, va¬
rious places; pat.ruelis, femoralis, not common, in primitive swamps.
Evarthrus sigrillatus, sodalis, under rubbish and stones, not rare.
Avara avida, exarata, in same places ; fulvipes local, abundant when found,
September; angustata, rare, under rubbish; impuncticollis, everywhere; ba-
sillaris, two examples ; cupreolata, not rare, grassy places ; fallax, not rare in
localities; obesa, not common, under stones; rubrica, three examples; nms-
culus, not common.
Diplochila major. — Two examples at light.
TEANS. AM. ENT. SOC. XXII.
OCTOBEK, 1895.
JOHN HAMILTON, M. I).
350
Dictelus dil status var. dejeani , not rare ; purpuratus, sculptilis, ovalis and elon-
gat us are not uncommon under stones : ambiguus, one example ; also at Jean¬
nette; teter, common under stones; politus. abundant under stones and bark.
Badister notatus. — Three examples; pulchellus , two examples at lights.
Calathus impunctatus. — Three examples; common near the mountains.
Platynus caudatus. — One example, Jeannette; hypolithus, anqustatm , about
streams under stones, etc. ; deems, not rare, wet places; sinuatus, near streams
about trees: reflexus, hillside rivulets; parmarginatns. local, in the bed of a
dry spring run; ancliomenoides, under alluvial rubbish and grass; obscurus,
rare, Jeannette; atratus, about wet places ; melanarius, alluvial places; c.u-
pripmnis, everywhere, but not abundant ; excavatus, not rare, on grassy places
near streams; ferreus, not rare, all localities; nutans, two examples; octopunc-
tatus, everywhere, but not abundant ; placidm, gregarious, grassy places about
fences, etc.; bogemanni, in houses, about lumber and on the streets; quadri-
punctatus, not common, wet places; seruginosus, not rare, grassy banks of
streams ; crenistriatus, not abundant, under stones ; punctiformis, every place,
under stones, etc.; retractus, two examples; picipennis, under rubbish, etc.,
on low ground.
Olisthopus parmatus. — Two examples, in swamp.
Atranus pubescens. — Humid places under rubbish.
Leptotrachelus dorsalis . — J ean n ette.
Casnonia pennsylvanica. — Not abundant, everywhere.
Galerita janus. — Gregarious, under stones, etc.
Tetrag-onoderus fasciatus. — Not common, near water.
Lebia grandis, atriventris, common, hibernates; viridis, pumiUa, abundant, on
bushes, etc. ; viridipennis, lobnlata. less common ; ornata Say, several varieties,
common ; fuscata, furcata, rare, on herbage in valleys; scapularis, not rare on
herbage on low ground ; bivittata, uot common.
Coptodera serata. — Rare, about piled wood.
Dromius piceus. — Under bark of standing trees, etc.
Apristus cordicollis. — Two examples.
Blecbrus pusio. — Twenty examples taken once.
Metabletus americanus. — About stumps and logs.
Plochionus timidus. — 1 Two examples.
Pinacodera limbata var. fuscata and platieollis, about standing trees under bark.
Cymindis americana, pilosa, not rare, under stones ; neglecta, not common,
about logs, gregarious.
Apenes lucida. — Five examples, under stones, May; sinuata, not rare, April to
November, under rubbish.
Brachinus americanus. — Three examples ; ? perplexus, common along streams ;
? alter nans, 1 cordicollis, of each two examples.
Chlsenius erythropus. — One example on high hill; sericens, near water; lati-
collis, diffinis, under stones on hills ; platyderus, two examples : aestivus, not
rare ; prasinus, river beach ; lencoscelis, not common : nemo rails, occasional,
under stones on hills; tricolor, more common, same habitat; pennsylvanicus ,
and varieties, everywhere; impunctifrons, not abundant, various places; niger,
rare, near St. Vincent ; tomentosus, about fences and stone-piles.
Anomogdossus emargdnatus. — Common ; pusillus, grassy places about water.
Brachylobus lithophilus. — Same habitat, less common.
Lachnocrepis parallelus. — Two examples in a swamp.
OLEOPTERA OF SOUTHWESTERN PENNSYLVANIA.
351
Oodes amaroides. — Wet places, not common.
Geopinus incrassatus.— Rather scarce, sandy shores.
Cratacanthus dubius.— Not abundant, everywhere.
Agonoderus lineola.— Three examples, sandy beach; paUtpes and var. comm, ,
everywhere; partiarius. pauperculm , not common.
Gynandropus hylacis.— Under bark of standing trees.
Harpalus dichrous, vulpeculus, common, under stones on lulls : nutnmnahs
common ; megacephalus , spadices, fallax, rare ; herbivagus. everywhere ; vrdnus
not rare, under stones on hills, matures in Autumn ; basilans, two examples.
Selenopborus palliatus.-Rare, sandy beaches ; gagatinus, not rare ; opahnus,
occasional on river beach ; elliptic* var. gr unarms, not common, under stones
on beach, May. . , . ,
Stenolophus fuliginosus.-Not rare; plebeius, wet places in grass; /rnmnb.,
abundant, same habitat; conjunct m (red thorax), everywhere; var. with
black thorax, in grass about fences; ochropezus, everywhere: alternans, rare,
semi-aquatic, wet sandy places along streams.
Acupalpus carus.— By sweeping in marshes.
Bradycellus rupestris and varieties, everywhere.
Tachycellus kirbyi.-In a swamp soon to be drained ; atnmedms, humid places ,
badiipennis, less abundant.
Anisodactylus rusticus.-Type form, everywhere; carbonanus common
interpnnctatus, two examples; agricola, harrisii, nigernmus moderately abun¬
dant; nigrita, three examples; melanopns, not common; discoideus, baltimor-
ensis, alluvial places and near water ; piccm, three examples ; agtlis, ton, ex¬
amples; terminal is, nitidipennis, everywhere; cm. two examples at ligh ,
lugubris , interstitial™ . abundant ; sericem, occasionally at light.
HALIPLID^B.
The species have not been collected exhaustively; Haliplus ruficollis and Cnemi-
c lotus 12-pnnctatm are frequent.
DYTISCIDiE.
The Dvtiscidse have not been exhaustively collected, and many more species will
reward the collector who has suitable opportunities. The species tabulated
are mostlv common, unless otherwise noted.
Ccelambus impressopunctatus and Deronectes griseostriatm were taken but
once- Hy.droporus var. pidcher , two examples : vitioms and Mon, jus are seem-
in.lv rare, the latter also occurs at St. Vincent; Agabus stagninus, four exam¬
ples at once in a swamp ; txnicolatus, three examples in different swamps .
Colymbetes sculptilis seems rare.
GYRINIDiE.
The diagnosis of the species of Gyrinus is more or less opinionative. and others
may occur here.
HYDROPHILID^E.
Other species than those listed await a collector with greater opportunities.
Ochthebius benefossus, foveicollis, occurred near St. Vincent. i opts , mu*
striolatus three examples once ; Philydrus hamiltoni, not common : Cymbiodyta
blanchardi, spring runs on hillsides; Hydrobim globosus, rare, on stones m
OCTOBER, 1895.
TRANS. AM. ENT. SOC. XXII.
352
JOHN HAMILTON, M. D.
running water: Creniphilus monticola, near St. Vincent; Cercyon unipunctatm,
not rare, under decaying carcasses: prsetextatus, in rotting fungi; navimlaris,
rare, in drying fungi ; pubescens , common in dry horse dung ; Oryptorhopleurum
minutum, abundant under decaying vegetation, etc.
LEPTINIDiE.
Leptinus testaceus. — Twice in old leaves in November; frequent near St.
Vincent, where it is taken by Prof. Schmitt, mostly by sifting.
SILPHIDAL.
Necropborus americanus. — One example ; pustulatm, two examples ; the other
species are common.
Silpha lapponica. — Jeannette; this species seems to be spreading southward ;
the other species are common.
Pinodytes cryptophagoides. — Taken here once, near St. Vincent frequently
by sifting for ants ; hamiltoni. only three examples of this rare beetle, which
is blind, occurred here; a few others were taken near St. Vincent.
Choleva. — All the species are common on carcasses, at putrid sap, etc.
Prionocheeta opaca. — At putrid sap, fungi, etc., April.
Ptomophagus parasitus. — April, with large ants under stones; brachypterm,
St. Vincent, by sifting.
Colenis impunctata. — About decaying vegetable matter.
Liodes globosa, polita, not common, in fungi ; often in clusters under bark of
trees in April ; discolor , not frequent ; basalts, not rare, in soft fungus on logs,
May ; obsoleta, not common, under hark, May.
Agathidium oniscoides, exiguum, common on green fungus under bark ; po-
litum , not frequent, in decaying mushrooms, September to October.
SCYDMiENTDJE and PSELA PH 1 ICE.
By P. Jerome Schmitt, St. Vincent, College, Pa.
These families have been placed in charge of Prof. Schmitt, and
his very valuable collection notes are given in full. All additions
of my own are inclosed in [ ].
Euthiodes cristata Brend. — Obtained by siftiug la ye re of old leaves on the
Chestnut Ridge, Cambria County. Specimens in Dr. Brendel’s collection.
[Cephennium corporosum Lee. — Several examples were taken at various times
in April on the underside of boards on damp grassy places.]
Cholerus zimmermanni Schaum. — Rarely found under bark and in the woods
of decayed trees, in Spring and Autumn. Ten specimens.
Eumicrus motschulskii Lee. — Sifted from old leaves; sixteen specimens taken.
Eumicrus caseyi Brend. — Found in very rotten wood and under old leaves,
usually in small companies; total number of specimens taken, seventy. It
differs from Eumicrus motschulskii and vestalis, and the European tarsatus both
in general habitus and by its short posterior coxae.
COLEOPTERA OF SOUTHWESTERN PENNSYLVANIA.
353
Eumicrus n. sp. — This is a small species, 1.2 mm. long, resembling a miniature
Cholerus simmermanni in appearance, and more or less also in sculpture, but
has the long posterior coxse of Eumicrus. A colony of twenty-two specimens
was found Dec. 26, 1894, in the black, accumulated, decayed material of a
partially hollow, though still living, oak that had been broken down by a
recent storm.
Brachycepsis subpunctatus Lee. — Thirteen specimens, found at different
times among decaying leaves.
Brachycepsis mariae Lee. — Taken more abundantly (thirty specimens) with
the last, also obtained from Cambria County.
Brachycepsis n. sp. (teste Dr. Brendel) — Very scarce, also taken with the last.
The antennal club of this consists of three large joints.
Brachycepsis cribrarius Lee. — Eight specimens collected with the sieve, and
two on Dec. 26, 1894, with the above-mentioned Eumicrus sp.
[Scydmaenus fossiger Lee. — Abundant under stones, etc., March to April.]
Scydmaenus from capillosnlus to minimus were all taken at various times with
the sieve, or found in dead wood, or under stones; none at any time in the
company of ants. No notes were made of the captures of the different spe¬
cies. For the names I am indebted to the kindness of Dr. Brendel.
Scydmaenus minimus Brend. — Found in very friable, rottenwood in April,
usually in small colonies.
Scydmaenus sp. long. .95 mm. — Probably not described, of the form of ovithorax
Brend. Yellowish red ; the second joint of antennae the. largest, the seventh
larger than its neighbors, club 3-jointed ; frontal margin without impressed
lines. One specimen.
Scydmaenus clavipes Say. — Black, slightly larger than Sc. davatus. Head and
elytra very shining, and with but few scattered long hairs; the head lacks
the usual basal tufts of coarse hair, whereas the thorax is densely, almost
completely, covered with long, yellowish brown, bristling hair, giving it a
striking, shaggy appearance. Four examples sifted in Cambria County, April.
PSELAPHIDiE.
Faronus tolulse Lee. — Very scarce. Altogether but six specimens have been
taken on the Chestnut Ridge, by sifting layers of old leaves during Winter.
Rhexius insculptus Lee. — Taken but rarely in dead wood under bark, or under
stones, and more abundantly with the sweeping-net in a grassy wood in
Spring.
Rhexius schmitti Brend. — A single specimen found under a stone on the Chest¬
nut Ridge in May.
Rhexius canaliculatus Lee.— Occurs abundantly in moss on the Chestnut
Ridge, also in North Carolina in Autumn and Spring.
Rhexidius trogasteroides Brend. — Six males and one female have been sifted
from deep layers of old leaves on the Chestnut Ridge during Winter.
Trimium parvulum Lee. — A colony of twenty to thirty specimens were, on one
occasion, taken in a very rotten oak stump in April, and a single individual
last July also in rotten wood.
[Trimium thoracicum Brend. -Rare, six examples found in very rotten wood,
April 20th.]
Trimium sp. — A single specimen, undescribed, with very widely separated oc¬
cipital fovere.
TRANS. AM. ENT. SOC. XXII.
(45)
OCTOBER, 1895.
354
JOHN HAMILTON, M. D.
Euplectus crinitus Lee. — Scarce ; found under bark of dead trees, April, May.
Euplectus interruptus Lee.-- Not very abundant in rotten logs and stumps, in
Spring.
Euplectus confluens Lee. — Abundant in Autumn and Spring in rotten wood ;
varies in the sculpture of the head and the shape of the ventral sexual marks
of the male.
Euplectus elong'atus Brend. — Rather scarce ; found with confluens.
Euplectus pertenuis Casey.— A dozen specimens taken with Trimium parvulum ;
others found with Euplectus confluens in Spring.
Euplectus leviceps Casey. — Three examples from Cambria County. Pa., April.
Euplectus sp. — Near confluens, but smaller, with more slender and graceful an¬
tenna; and different ventral, sexual marks in the male ; several % %nd 9
specimens found in dead wood in Winter; a*pair Dec. 26, 1894.
Trimioplectus obsoletus Brend. — Scarce ; only three specimens, two of which
were obtained Dec. 26, 1894.
Trimioplectus rufleeps Lee. — Four examples from rotten, red oak log, April,
1895.
Trimioplectus arcuatus Lee. — One specimen so named by Dr. Brendel.
Actium sp. — A single specimen, referred to this genus by Dr. Brendel, which was
collected in Cambria County.
Eutyphlus similis Lee. — Very abundantly obtained from under old leaves on
the Chestnut Ridge in Winter ; three to four hundred specimens.
[Thesium cavifrons Lee. — Occurs under stones, etc . April.]
Arianops amblyoponica Brend. — Although twenty specimens have been col¬
lected in four years this is a very scarce insect, found on the Chestnut Ridge.
The first pair ever seen by me walked about among ants, and one of them
escaped me in one of their galleries. Since then it has usually been found
under stones rather deeply imbedded in the ground, and apparently not in
company of ants, though always in their immediate neighborhood. The de¬
scribed type is a 9 • Found from July 20tli to October.
Batrisus schaumii Aube. — From fifteen to twenty specimens have been found
in rotten stumps during Spring.
Batrisus riparius Say. — Found with the last and in about equal number.
Batrisus scabriceps Lee. — Taken but once, three 9 and nine ^ specimens,
Dec. 26, 1894, in the same material from which Eumicrm sp. and Trimeoplectus
obsoletus were obtained.
Batrisus bistriatus Lee. — Abundant, but exclusively taken here in the nests
of Formica subsericea Say or in the mixed colonies of this ant and F. subintegra
Em. Does not occur on the Chestnut Ridge.
Batrisus frontalis Lee. — A single pair found under a log on the Chestnut Ridge,
May.
Batrisus g-lobosus Lee. — Not rare. Here it occurs in very rotten and friable
oak logs or stumps and under bark in April, and not with ants; but on the
Chestnut Ridge — during May and the Summer — I have looked for it and
found it only in the bills of Formica exsectoides Forel. ; in Cambria County it
has been taken with Formica subsericea Say on several occasions.
Batrisus punctifrons Casey. — Has not occurred here, but quite often on the
Chestnut Ridge and in Cambria County, as well as in Elk County, under
layers of old leaves and sometimes under bark or in logs. It is sometimes,
accidentally perhaps, met with in the galleries of Carnponotus pennsylvanicus
DeGcer with Ptomophagus brachyderus Lee.
COLEOPTERA OF SOUTHWESTERN PENNSYLVANIA.
Batrisus furcatus Brend. — Found in logs or among the leaves alongside of
them ; April. May. Scarce, but ten specimens collected in four years.
Batrisus denticollis Casey. — This is abundant during Spring and Autumn
under leaves and stones in some woods, apparently preferring some localities
to others. Numerous specimens.
Batrisus virg-iniae Casey. — This ought, perhaps, not to be included in this list ;
a single specimen, now destroyed, has so been named for me.
Batrisus foveicornis Casey. — Of rare occurrence in rotten wood in Spring.
Batrisus striatus Lee. ( cepkalotes Casey) — Very rarely found here in stumps or
under old leaves.
Bryaxis. — The species of this genus are not often met with here, only from
thirty to forty individuals have been obtained in four years, the great ma¬
jority of which have been sifted from layers of dead leaves in grassy woods,
and the others were found under stones. All were taken during Spring, and
mounted, but no record was made of them. B. perforata was taken with the
sweeping net (two specimens) in a meadow on the Chestnut Ridge in May,
1894.
Bryaxis semirugosa Brend. — But two specimens have occurred to me ; it is
very coarsely punctured. [Described by Dr. Brendel in “ Entomological
News,” vol. vi, 183. The locality given by Dr. Brendel is erroneous, and
should have been western Alleglianies.]
Rybaxis conjuncta Lee. — Single specimens and pairs of this are not seldom
obtained with the sieve, or found under stones during Spring, it cannot,
however, he said to be abundant.
Decarthron abnorme Lee. — A dozen specimens have been collected at different
times with the sieve, or found attached to the lower side of stones, Spring.
Decarthron n. sp. (teste Dr. Brendel) — One pair found under a stone on the
Chestnut Ridge in October, and another pair sifted from among old leaves in
Cambria County, in Spring.
Bythinus carinatus Brend.— Abundant on the Chestnut Ridge and in Cambria
County under leaves ; Autumn, Winter and Spring. Have not met it except
on the mountains ; two hundred and fifty specimens.
Bythinus (subgenus Machserites) tychoides Brend. — One specimen sifted from
leaves on the Chestnut Ridge, in May.
Tychus minor Lee. — Var. ? three 9 and nine % specimens of this have been
collected in Spring and in Autumn from under leaves or under stones. It is
hardly LeConte’s minor. All the males have a conspicuous T-shaped tubercle
at the middle of the mesosternum.
Tychus testaceus Casey. — Two males and ten females. Found with the last,
mesosternum of male simple.
Ctenistes piceus and consobrinus Lee. — Abundantly taken under stones
with Batrisus denticollis. but especially so with the sweeping net in grassy
woods ; twenty-six males and thiity-six females, and forty other specimens
not yet separated with regard to sex. The larger individuals I mark piceus,
the smaller ones consobrinus — there does not seem to exist a structural char¬
acter by which they can be separated as two recognizable valid species. Ct.
zimmermanni. from North Carolina, has the palpal appendages distinctly sepa¬
rated from, and articulating with, the globose portiou of the palpal joints.
Ceophyllus monilis Lee. — Found, not rarely, with colonies of Lasius aphidicola
Walsh, in Spring, and sometimes in Autumn from August 10th onward.
TKANS. AM. ENT. SOC. XXII.
OCTOBER, 1895.
356
JOHN HAMILTON, M. D.
[Tmesiphorus costalis Lee. — Only two examples.]
Tmesiphorus carinatus Say. — One female found under bark in Spring,
[Cedius ziegderi Lee. — A few examples onee.]
Cedius spinosus Lee. — In very rotten stumps during Spring and Fall. Teu
specimens have been found. This may not be LeConte’s spinosus ; its first
dorsal segment of the abdomen has short, yet quite distiuct ear in a;, which
are, in some specimens, even almost half as long as the segment. Long. 1.8
mm. -1.9 mm.
Tyrus humeralis Aube. — Not often found under bark or sifted from leaves.
Adranes ccecus Lee. — Has occurred but once with me in a colony of Lanins
aphidicola early in April. Five specimens.
STAPHYLINIDiE.
Falagria cingulata and F. dissecta occur in March and April on the underside
of stones on grassy slopes. An undescribed species resembling cingulata is
found about old stumps.
Hoplandria lateralis is abundant in decaying vegetable substances; an unde¬
scribed species, received also from Ohio and Kansas, is found under stones
along streams feeding on dead animal substances. Length .10-.12 inch,
brown, basal half of elytra and abdomen, except segments 5 and 6, yellowish.
Homalota 3-maculata feeds on various fungi ; ambigua, October and November,
in decaying fungi : Amischa analis and Colpodota lividipennis mostly under
bark; Homalota pedicularis, October, in dry, old cow droppings; an elongate,
very depressed form with sculptured thorax is abundant under bark of
robinise ; a minute, depressed, elongated species .07 inch, long, with impressed
thorax line3 under the outside bark of pine and feeds on the dry resin ;
several species were not collected.
Lomechusa cava occurred once, but frequently at St. Vincent with ants.
Tachyusa cavicollis, gracillima, both about swamps.
Myrmedonia schmitti, with ants, St. Vincent, not common ; nulls, one example.
Aleochara lata and bimaculata, common ; brachypterus, not frequent; nitida ,
common; the larvse are parasitic in dipterous larvae living in droppings of
cattle, and the beetles develop in their pupariums : two small species unde¬
termined.
Oxypoda sagulata, decaying vegetable matter.
Bolitochara picta, blanchardi (“Can. Ent.” vol. xxv, p. 276), abundant.
Gyrophaena. — All the species abound in mushrooms.
Dinopsis americana. — Very wet places, common.
Acylophorus. — Both species are common in wet places.
Heterothops fumigatus. — Under rubbish, etc., in damp places.
Quedius fulgidus. — Two varieties, one piceous, the other with rufous elytra ;
not rare; peregrinus is arboreal in habitat; the other species occur under
rubbish or the bark of trees, not rare.
Listotrophus capitatus. — One example, St, Vincent.
Staphylinus badipes. — Not common; vulpinus, rare; maculosus and cinnumop-
terus, common; mysticus and comes occur rarely in fungus; violaceus, not rare
under bark.
Ocypus ater. — Not common under stones, etc.
Belonuchus formosus. — lu mushrooms, etc.
OLEOPTERA OP SOUTHWESTERN PENNSYLVANIA.
357
Philonthus politus and asper. — Both abundant, occur together, and require
care to separate; furvus, rare ; Isetulus Say, common in fungi ; hepaticus, rare ;
palliatus , rare ; debilis, common in fungus ; varians, thoracicus, fusiform, is and
micans are rare ; lomatus and brunneus, common ; cyanipennis and Isetulus,
common in fungi ; quediinus, one example only ; sordidus not common ; ni-
gritulus and microphthalmus, abundant in wet places ; apicalis, viridanus, of each
one example ; confertus , not rare, near streams.
Actobius cinerascens. — Not rare, near streams ; fraterculus, rare, wet places ;
sobrinus , abundant in wet places ; parens, rare, under bark ; psederoides, com¬
mon about streams ; jocosus, rare, in wet places.
Xantholinus fulgidus. — Three examples : the other species are common.
Leptacinus longicollis. — Not common, under bark.
Baptolinus longiceps. — Bare under bark here and among the mountains.
Stenus. — Besides the species listed, there are several undetermined.
Eusesthetus americanus. — Swampy places, minute.
Edapbus nitidus. — Not common, St. Vincent.
Stictocranius puncticeps. — Not rare, under leaves.
Cryptobium badium. — Not rare; bicolor , common ; pallipes and latebricola, not
rare, under bark; cribratum, wet places.
Lathrobium grande. — Under rubbish and leaves, etc., on low ground ; punc-
tulatum, not rare ; angnlare, rare, in swamps ; bicolor, not rare ; annatum, com¬
mon ; the other species are not common.
Stilicus. — The species are common, under bark, etc. ; biarmatus is frequent in
early Spring under stones, etc., on grassy hillsides.
Androchara corticina. — Common on the ground under rubbish, sometimes
under bark ; Trachysectus confluens is common under bark.
Pinophilus latipes. — Not abundant, under rubbish in damp places, under bark.
Tachinus memnonius, flavipennis, luridus, fimbrintus and pallipes, abundant in
decaying fungi and rejectamenta of herbivorous animals; repandas is rare,
in swamps ; limbatus, low grounds under rubbish : fumipennis, not uncommon,
various places ; nitiduloides, twice, gregarious like the other species.
Taohyporus nanus and nitidulus are common under stones on grassy hill¬
sides in early Spring : the other species are not uncommon.
Cilea silphoides. — Gregarious, occurred once, also at St. Vincent.
Conurus littoreus, knoxii and scriptus not common ; the other species are
abundant.
Boletobius niger is rare; the other species are fairly common, all feeding on
fungi ; var. gentilis is rare.
Bryopus rufescens. — Common under things in early Spring.
Mycetoporus humidus Say, not rare, decaying vegetation.
Olistheerus substriatus, rare, under bark.
Megalops ccelatus, rare, under bark, under small fungi.
Oxyporus. — The species all feed on fungi ; stygicus, lepidus, A-maculatus and oc
cipitalis are less common ; a hlack headed variety of ■l-maculatus occurs at St.
Vincent.
Osorius latipes, not common, here and at St. Vincent.
Bledius semiferrugineus and annularis, not common, along streams ; stabilis
common on grassy banks of streams: emarginatus excessively abundant.
Platystethus americanus, common under dung, rubbish, etc.
TRANS. AM. ENT. SOC. XXII.
OCTOBER, 1895.
358
JOHN HAMILTON, M. D.
Oxytelus rugosus, rare ; pennsylvanicus, insignitus, exiguus and suspectus common ;
placusinus, with ants, St. Vincent.
Trogophlceus. — All the species are common about streams and ponds.
Apocellus splmericollis and bicolor rare.
Thinobius sp. .02 long, not uncommon, muddy swamps.
Geodromicus plagiatus, common ; strictm less common, both in wet rocky
places ; between the layers of stone, etc.
Lesteva pallipes, common along streams.
Acidota subcarinata, common here ; St. Vincent.
Arpedium anguiare, not common ; cribratum , St. Vincent.
Trigonodemus striatus, not rare in decaying fungus, November.
Larithmeeum sordidum, rare, under leaves.
Olophrum obtectum, common, wet grassy places.
Homalium foraminosum, St. Vincent; humeromm, rare; punctiventre, common
on cratsegus blossoms; rufipes, not common ; flavidum, St. Vincent.
Anthobium couvexum, common on blossoms; hornii, not uncommon. I take
it likewise in Florida. Length .04 -.05 inch.
Protinus atomarius, not rare, under bark.
Lispinus tenellus, St. Vincent, not common.
Glyptoma costale, under bark, common.
Triga picipennis, not rare.
Eleusis pallida, in colonies under hark, not common ; nigrella, two examples
under bark in a mountainous place.
Siagonum americanum and punctatum not common.
TRICHOPTERYGIPJE and SCAPHIDIID^E.
Many species of these families have not been collected. Limulodes paradoxus is
frequent at St. Vincent with ants.
PHALACRID^E.
Phalacrus politus, breeds in corn ergot.
Olibrus pallipes and semistriatus on bloom of Solidago, etc.
Stilbus apicalis and nitidus under rubbish.
CORYLOPHID. . 79
spermophilge Towns . 79
My obi a . 75
diadema . 76
Myopa pictipennis . 64
Myrmedonia scbmitti Hamilton ■ ■ ■ 376
Mystacella sp . 75
Bfematus corylus . 306
dorsivittatus . 303
Hudsonii maguus Dyar- 306
lateralis . 307
cardinalis .
Koebelii .
Nysson solani CocM • ■ . .
Ocyptamus dimidiatus .
fuscipennis • • - •
iris. • • .
Ocyptera euchenor .
. 39
. 39
. 248
affinis .
albomaculata • •
. 276
Aid rich i Johns ■ •
. .250, 262
am erica na .
. .250, 261
arcuata .
. 250, 255
binotata .
. -250, 251
canadensis • • •
. 277
cincta .
dissimilis .
dorsalis .
. .250, 254
emarginata • • • ■
fallax Johns • • •
. .250, 257
flava .
flavicornis .
. . .251, 269
latifasciatns . 304
luteotergum . 304
Marlattii Dyar . 305
mendicus . 302 I
pinguidorsum Dyar . 303
sirailaris . 301
tboracicus . 307
unicolor . 308
ventralis . 304 !
Nemorgea sp . 75
Neuropteroid Insects, New . 313
Nitidulidse . 331, 361
Nomad a afi'abilis . 123
americana . 125 |
articulata . 124 j
luteola . 124
luteoloidesi?o& . 124
vincta . 123
Notbochrysa virginica . 315
Nothrus . 5, 13
bipilis Banks . 14
excisus Banks . 14, 15
furcatus Banks . 14
rugulosus Banks . 14, 15
truncatus Banks . 14
Notodonta tristis . 379
flavifasciata . 275
hieroglyphica • • • -251, 267
hoodiana . 251, 266
bydroleonoides J’s 250, 261
insequalis . 250, 254
intermedia . 251
interrupta . 265
Lefebvrei . 272
limbipennis . 276
maculifrons . 277
mexicana Johns . 271
microstoma . 251, 264
nigerrima . 250, 258
nigrirostris . 250, 257
obscura . 251, 270
occipitalis Johns • • .251, 268
pilimana . 250, 263
pilosus . 250, 258
prasina . 273
pubescens . 251, 264
qnadrimaculata . 274
rubricornis . 276
rufipes . 250, 253
similis Johns . 251, 267
texasiana Johns ■ ■ .250, 259
trivittata . 250, 259
TRANS. AM. ENT. SOC. XXII.
DECEMBER, 1895.
VI
INDEX.
PAGE.
Odontomyia Truquii . 273
varipes . . 250, 252
vertebra ta . 250, 260
vicina . 276
virgo . 250, 262
viridis . 251, 270
Oedemeridae . 342, 374
(Estidae . .... 64
Olivieria sp. . 75
Oncomyia baroni . 63
loraria . 64
Oribata . 5
affinis Banks . 5, 6
arborea Banks . 5. 7
depressa Banks . 5, 6
emarginata Banks . 5, 7
hirsuta Banks . 5, 7
magna Banks . 5, 6
m testa Banks . 5, 6
pratensis Banks . • • • - 5, 6
robusta Banks . 5, 7
Oribatella Banks . 5, 8
aquatica Banks . 8, 9
armata Banks . 8, 9
bidentata Banks . 8
obesa Banks . 8. 9
4-dentata Banks . 8
signata Banks . 8, 9
Oribatidae . 5
Oribatodes Banks . 5, 10
mirabilis Banks . 10
Oribatoidea of the U. S . 1
Ormia sp . 78
Osmia albiventris . 125
bucepliala . 125
Otidocephalus perforates . 380
Otiorhynchidae . 344, 375
Oxybelus sparidens Cockl . 292
subcornutus Cockl . 293
Pachygaster pulcher . 55
Panorpa affinis Banks . .315, 316
americana . 316
canadensis Banks- ■ ■ .315, 316
confusa . 316
debilis . 316
lugubris . 316
maculosa . 316
nebulosa . 316
ru fa . 316
ufescens . 316
PAGE.
Panorpa subfurcata . 316
Panurgus? andrenoides . 121
autumnalis Roh . 121
Paragus bicolor . 36
Parnidse . 332, 362
Perdita numerata Cockl . 296
Perla trivittata Banks . 313
Perthalycra murrayi . 379
Phalac.ridae . 328. 358
Philopotamus americanus Banks- . 316
Pbotopsis belfragei . 291
nubecula . 291
pictus Cockl . 289, 291
Phthorima . 18
' Physocephala affinis . 62
castanoptera . 62
ochreiceps . 62
tibialis . 63
Pimplinas, New . 30
Platyuus caudatus . 379
Pcecilosoma inferentia . 308
Pristiphora tibialis . 301
Prometbus . 18, 21, 29
costalis . 21
elongatus . 21
ruficrus . 21
Prosopis asinimus Cockl . 299
bipes Cockl . 296, 300
modestus . 116
pygmaea . 116
subtilis Fox . 295, 296
Pselaphidse . 325, 352, 353
Pseudohystricia . 68
ambigua . 69
exilis . 69
Pseudomyothyria sp . 77
Ptinidae . 335, 365
Pyrochroidae . 343, 374
Pythidae . 342, 373
Rhingia nasica- • - . 39
Rhipiceridae . 332, 362
Rhipiphoridae . . • • -344, 375
Rhizobius . 112
debilis . 112
lophanthae . 112
Rhyacophila pacifica Banks . 316
RhysodidaJ . 329, 359
Saundersia bicolor . 69
siguifera . 70
Saw-fly Larvae . 301
INDEX.
PAGE.
Scapbidiidae . 328, 358
Scarabaeidae . 336, 362
Scolytidse- • ■ . 346, 3<8
Scopolia . . 77, 78
Scotiptera . .
Scutovertex . 5, 11
concolor Banks . H
pilosus Banks . H
Seydmaenidae . 325, 352
Scymnillus Horn . HO
aterrimus Horn . HO
Scymnus . 83, 108
abbreviatus . 98, 104
amabilis . 92, 94
americanus . 95, 97
ardeiio Horn . 98, 105
balteatus . 87, 88
bigemmeus Horn . 87, 88
bisignatus Horn . 91, 92
bivulnerus Horn . 91, 92
Brullei . 98, 101
caurinus Horn . 95, 97
cervicalis . 98, 103
cinctus . 98, 99
circumspectus Horn ■ ■ .95, 96
collaris . 98, 103
coloradensis Horn . 92. 94
coniferarum . 99, 108
debilis . 88, 91
femoralis . 88. 91
flavifrons . 91, 93
flebilis Horn . 98, 100
fraternus . 98, 101
guttulatus . 92, 95
intrusus Horn . 91, 92
lacustris . 98, 105
Liebecki Horn . 88, 89
marginicollis . 98, 104
myrmidon . 88, 89
nanus . 98, 107
nebulosus . 95
opaculus Horn . 95. 96
ornatus . 92, 94
pacificus . 98, 100
pallens . 98, 99
Phelpsii . 95, 96
punctatus . 99, 107
puncticollis . 98, 102
punctum . 98, 106
quadritaeniatus . 88, 89
PAGE.
Scymnus semiruber Horn . 98, 102
sordidus Horn . 91, 93
strabus Horn . 98, 100
tenebrosus . 98. 106
terminalis . 88, 90
utilis Horn . 98, 107
xauthaspis . 88, 90
Sericomyia militaris . 46
Setodes avara Banks . 316
Silpbidae . 324, 352
Silvius quadrivittatus . 57
Silphoplagia anomala . 72
Smilia .
coccidivora . 82
marginata . 82
misella . 82
ovalis . 82
Sphaerophoria sp . 37
Sphaerophthalmus rufosuffusa Cockl 298
scaevolella Cockl. 298
wickham i Cockl. 297
Spkeeodes arvensis . H7
Spilomyia longicornis . 54
quadrifasciata . 54
Spondylidse . 337, 36 <
Staphylinidae . 326, 356
Stenolopbus alternans . 379
Stratiomyidae . 55
Stratiomyia . 227
apicula . 231, 239
badius . 231, 243
barbata . 230
bimaculata . 231, 245
Bruneri Johns ■ ■ • • 230, 233
constans . 231. 244
constricta . 245
discalis . 231, 240
Gerstaeckeri . 231, 245
gouiphora . 247
laticeps . 230, 234
lativentris . 230, 233
maculosa . 231, 241
Meigenii . 231, 238
melanosoma . 230, 232
mutabilis . 231, 243
nevadae . 231, 237
nigrifrons . 247
norma . 231, 236
normula . 231, 235
pm gnis
246
DECEMBER, 1895.
TRANS. AM. ENT. SOC. XXII.
INDEX.
viii
PAGE.
Stratiomyia quaternaria . 231, 241
robusta . 247
senaria . 231. 237
simplex . 248
subalba . 246
unilimbata . 231, 236
Strongylogaster abuormis . 311
annulosus . 310
apicalis . 312
luctuosus . 310
pinguis . 311
soriculatus . 310
Stylogaster neglecta . 64
Syuhalonia atriventris . 126
belfragei . 126
fra ter . 126
nigripes . 126
Syritta pipiens . 54
Syrphidse . 33
Syrphoctonus . 18, 25, 29
agilis . 25
cressonii Davis. . . .25, 27
gillettii Davis ■ . ■ . - 25, 26
maculifrons . 25, 26
mellipes . 25, 26
pacificus . 25, 26
pleuralis . 25
robustus Davis . 25
Syrphus sp . 36
Tabanid® . 56
Tabanus alene Towns . 59
angustifrons Towns . 59
atratus . 60
exul . 60
punctifer . 60
Tackinid* . 65
Tachina clisiocampse . 73
sp . 73, 74
Taxonus multicolor . 309
Tenebriouid* . 341, 372
Tenthredo Cressoni . 312
Tkelaira sp . 78
Therioplectes astutus . 57
comastes . 58
zonalis . 58
Throscid* . 334, 364
Titria . 16
glabrata . 16
PAGE.
Trickopkora sp . 73
Trichopoda arcuata . 65
histrio . 65
mexicana . 65
Trichopterygidse . 328, 358
Trogositidse . 331, 361
Tropidia incana Towns . 52
quad rata . 53
Vanderwulpia atrophopodoides. • • 77
Volucella abdominalis . 39
anna . 40
apicifera Towns . 40
casta nea . 41
comstocki . 41
estebana . 41
esuriens . ’. . 41
evecta . 42
facialis . 42
fax Towns . 42
fornax . 43
haagii . 43
inops Towns . 43
isabellina . 44
lucana . 44
mellea . 44
obesa . 45
j>allens . 45
satur . 45
sodomis . 45
tolteca Towns . 45
vacua . 46
Xylonomus maud* Davis . 32
Xylota chalybea . 53
flavitibia . 53
pigra . 53
Xysta sp . 65
Zodion fulvifrous . 63
splendens . 63
Zootreplies . 18. 22, 29
antennatus Davis. . . -22, 23
cingulatus . 22, 23
frigidus . 22
ichneumon ides . 22, 23
maud® Davis . 22
montauus Davis . 22, 23
saginatus . 22. 23
scapulatus . 22
inconstans Davis . 23