i ea ee oS . eo oe ee ST eS on: eee o:. Vy yy wap want wut ala yertoyy ey pier vy vor vpdeas ' WV pelea’ ryyvar ryyy yey wa Ce eae ie BT CP Oe es yedide wy vayVELs nay na of AN Lm} a) a ) ) Y veer yuh pgs yay Voth fy by vey Hy WY a ey os VHP RMA ‘ Ia. a > = St, Sate ‘y uM ie DT Pr a ACS LAN Salat Sty ie & a) V Pre Cit eee fy MC ROU wi gene a na a) hye ya tte AS 7i he piak NEE ba eich suet ae tas Se ane Serre elas iho ti 15} 188 it ~“—- r hy My. Ae papas i] Pa yy by Ved ge Hues, dh iby ¥ i ‘ \ Ns f » 8 4 ‘f Raut YW 4. LARK a jeunes way Say sts iat 1 4S, aha eat RR AOR IAS 4 - eee a ae : 3 Fe aed FAS tec ue 2h ’ i | oy i Hi) ne is hy PROCEEDINGS OF THE ENTOMOLOGICAL SOCIETY OF WASHINGTON VOLUME 55 OFFICERS FOR THE YEAR 1953 ET ONOTONY PLeStaen ts. eet Nhe ees Ee ee C. L. MARLATT PPO SUL CM Gin aaa Re SNe IST AT IN Mi aN TB ge W. H. ANDERSON PUTS TAVAUCE Ee ESULCIUG ae nee Wt ee ee hut acide A. B. GURNEY INecond sVAce. IPT esi ent jak a ee T. L. BISSELL IRECOTURNG SCCTCLOMY 2 Aaa ea es KeLuigt O’ NEILL Corresponding Secretary = ee ARLO M. VANCE ATT CUS UTE Ti oc aL EE a sees AS OS eh ea E. P. REAGAN LOGY oY oe ee ae Be Wiss HEAD eG SE Ste ORL bascah Jet Bio eee. CIE B. D. BurKs CAUSE OCA GT ei eS SEAL SA Se CUES ING aah eee eee HERBERT J. CONKLE Executive Committee___________________.. W. B. Woop, ALAN STonz, W. D. REED Nominated to represent the Society as Vice President of the Washington Academy of Sciences... ARETE ea F. W. Poos PUBLISHED BY THE SOCIETY WASHINGTON, D. C. 1953 Hi PROC. ENT. SOC. WASH., VOL. 55, NO. 6, DECEMBER 1953 TABLE OF CONTENTS, VOLUME 55 BARBER, HArky G.: A second revision of the genus Ptochiomera Say and its allies (Hemiptera, liygaeidae) - Sere te alle Brae —______: A change in name in the family Reduviidae (He- miptera) __- Bae Uae less epee heen see Bo Dei, fat ie oat UI i le aaa —: A revision of the genus Kleidocerys Stephens in the United States (Hemiptera, Lygaeidae) Sia, Diver ee BELKIN, JOHN N.: Corrected interpretations of some elements of the abdominal chaetotaxy of the mosquito larva and pupa (Diptera, Culicidae) —_ i feasincts NAb GACY, SMS eal CE SS Bick, GrorGe H.: The nymph of Miathyria marcella (Selys) (Odo- avatereieeod Walloyell Rb DRG zW es) hemmed ENS CSE As CR decal Bowarr, GEORGE BE. and GEorGR F. KNOWLTON: Notes on mating, prey provisioning, and nesting of Sphex procerus (Dahlbom)——~ —_________—: Notes on food habits of the western Harvester ant GEeyimentopierase Homi CiClele)) Reese eh eee ee Sn ee eae Bouarr, RicHarp-M.: A new species of Culex and notes on other species of mosquitoes from Okinawa (Diptera, Culicidae) ——_ Burks, B. D.: The genus Metacolus in North America (Hymenop- iieveal ci Ole Haslem eleva) jee ers eae ese ht SES et ee ae ee Pie Side eebesee fs CARVALHO, Jos& C. M. and R. I. Samer: Neotropical Miridae, XLVII—The genus Ofellus Distant, 1883, with descriptions of three new species (Hemiptera) —_ Coin, A. C.: Notes on the genus Leptothorax in New Mexico and a description of a new species (Hymenoptera, Formicidae) — : CoLEMAN, R. W.; A new blackfly species from California (Diptera, Simuliidae ) Cook, Davin R.: Marshallothyas, a new genus belonging to the sub- family Thyasinae (Acarina, Hydracarina ) Emerson, K. C.: A new species of Carduiceps (Mallophaga, Philop- {ATSUPRICG 2) 2) Veer RA Lx 8s, 2 SEE Gat A ke es ae eh RM etches Se FaircHitp, G. B.; A note on Hertigia hertigi Fairchild and descrip- fiom of the female (Diptera, Psychodidae) == Axboreal’ Tabanidae in Panama (Diptera) Foorr, RicHARD H.: The pupal morphology and chaetotaxy of the Culex subgenera Melanoconion and Mochlostyrax (Diptera, Culi- PGTICG eI) ie ews ees oni WES LOL ere ee rs eens ei eRe ee eee Ji WUE Fox, Irvine: Notes on Puerto Rican Simuliidae from light traps (CBI aa Sa eee NA MUS Male ey testa ie pra ta Same Seo ol FuLLAWAy, DAvip T.: New species and varieties of Opius (Hymenop- Teas HN A] Bones KEXOD AIG EI ety Vir eke Ny EN ell Nec ak SP ee ce aA le ee ne wee ee Grece, Roperr E.: Morphological considerations affecting the tax- onomy of certain genera of ants (Hymenoptera, Formicidae) __— 318 183 305 209 101 239 PROC. EN‘. SOC. WASH., VOL. 55, NO. 6, DECEMBER 1953 HorrMaNn, RicHarp L.: The occurrence of several Séarce assassin bugs in Virginia (Hemiptera, Reduvioidea ) : A new Central American milliped of the genus Platyr- hacus (Polydesmida, Platyrhacidae) 222 Hussgy, Rouanp F.: Four new Neotropical Reduviidae (Hemiptera) HWwaAne, CuHi-Line: See Ross. JAMES, Maurice.: Notes on the distribution, systematic position, and variation of some Calliphorinae, with particular reference to species of western North America (Diptera, Calliphoridae ) — KyicHt, KENNETH L.: The mosquitoes of the Yemen (Diptera, C@rnbiendaie ) ot ie ios. Dae 2 hs es ied seat) Ween Sip. MRE ed a ORI KNOWLTON, GEORGE F.: See BOHART. KROMBEIN, Kart V.: A note on the nesting habits of Megachile texana Cresson (Hymenoptera, Megachilidae) -—----.. ————: Kill Devil Hills wasps, 1952 (Hymenoptera, Aculeata ) LANE, MERTON C.: Some generic corrections in the Elateridae, IV Cole op ten ay) yes. at) ioe a eee aii DE of Rese A MOEN Een an cA a Lrvr CASTILLO, ROBERTO: A new species of Culex from +Ecuador ater ah es Ce ice aoa wh a a INL a ln a 8 Sep eal oe Ee MALDONADO CApribES, J.: Redescription of the genus Burtinus Stal and description of a new species from Puerto Rico (Hemiptera, @orerdlale ieee 2 ica ee he phat ken! Meas afEL tie Ny SLR NEW aececeesaee Wied aede ine Five new Neotropical species of Ghilianella (Hemip- Gene Re Ve Cuyvald Cleve) hese ok Satin rh Miles NN akc oo 6, else Popa NN Se ann strpos MercaLr, Z. P.: Young’s reclassification of Western Hemisphere Typhlocybinae (Hemiptera, Cicadellidae) ~~ WP vil Sai ees MurESEBECK, C. F. W.: Three new reared Braconidae (Hymenop- HERA on eee Puitip, CORNELIUS B.: The genus Chrysozona. Meigen in North PaaeKeren ezine MCL DIiy on ere dike Ye sey) oye nialan(o eyes) 5 ea ae ed ih ee ae ae i el ORe A rants Pratrr, Harry D.: Notes on American Mansonia mosquitoes (Dip- TETAS Gl C1 Alen) see aes ten eae tar eon Ad CU era WAS OE REINHARD, H. J.: Notes on muscoid synonymy with descriptions of three new species” (Diptera) ===) gaa Versbrlie 2 Fs : RrHerpD, Pauut T.: The occurrence of Blattella vaga Hebard in Texas (Orthoptera, Blattidae) — Rugies Mie eo oh lt : Ross,;HERBERT H. and CHI-LING HWANG: Some interesting Chinese » species of Glossosoma (Trichoptera, Rhyacophilidae ) SABROSKY, CurtTIS W.: The scientific name of the screw-worm, with a note on Paralucilia fulvicrura (Diptera, Calliphoridae ) ——_—___——: Taxonomy and host relations of the tribe Ormiini in the Western Hemisphere (Diptera, Larvaevoridae ) 167, ii 163 251 196 40 198 166 149 iv PROC. ENT. SOC. WASH., VOL. 55, NO. 6, DECEMBER 1953 Sauer, R. I.: See CARVALHO. : The new-world distribution of Alydus calcaratus (L.) with comment on the disposal of the name Coriscus Schrank, Poor GeemipteravOoreidae,): 2802 2 Bsa ee ly ae 315 SHOGAKI, YUKIO: See TOKUNAGA. SmitH, MARION R.: Dolichoderus granulatus Pergande, a synonym GHyanenoptera, Bormicid ae)! ee ae 211 SOMMERMAN, KATHRYN M.: Identification of Alaskan black fly larvae (Dipteras \simulid ae). eee ee ee 258 SPIELMAN, ANDREW: See WALLIS. STANNARD, Lewis J., Jr.: The genus Halmathrips Hood (Thysanop- OLAS Ary I hey ey) Fey ed eal Sed ne BA ee ae Soe ae Soe eh ee 1 TOKUNAGA, MASAAKI and YUKIO SHOGAKI: A new species of biting midge from Japan (Diptera, Ceratopogonidae) —..- 286. WALLIS, ROBERT CHARLES and ANDREW SPIELMAN: Laboratory rear- ing of Culex salinarius (Diptera, Culicidae) 140 WHEELER, GEORGE C. and JEANETTE WHEELER: The ant larvae of the myrmicine tribe Pheidolini (Hymenoptera, Formicidae) 49 WHEELER, JEANETTE: See WHEELER. WILLIAMS, Rocer W.: Notes on the bionomics of the Alluaudomyia of Baker County, Georgia, I. Observations on ee habitats of bella and needhami (Diptera, Heleidae) ees 283 BOOK NOTICE APHIDS OF THE ROCKY MOUNTAIN REGION, by Miriam A. Palmer, 452 p., 8 colored plates, and 455 figs. Keys are provided for the subfamilies, tribes, genera, and species of practically all of the forms in North America, north of Mexico. Price $10.25 postpaid in the United States, elsewhere $10.50 postpaid. Order from J. J. Davis, Purdue University, Lafayette, Indiana. ACTUAL DATES OF PUBLICATION, VOLUME 55 Number Pages Date, 1952 al 1- 48 February 16 2 49-112 April 27 3 113-160 June 25 4 161-208 August 24 209-288 November 13 Oe 6 289-332, i-iv December 29 haps (UT Lnsects VOL. 55 FEBRUARY 1953 No. 1 PROCEEDINGS of the ENTOMOLOGICAL SOCIETY OF WASHINGTON DIV, INS, U.S. NATLe MUS. PUBLISHED BIMONTHLY BEGINNING WITH FEBRUARY BY THE ENTOMOLOGICAL SOCIETY OF WASHINGTON U. S. NATIONAL MUSEUM WASHINGTON 25, D. C. Entered as second-class matter at the Post Office at Washington, D. O. THE ENTOMOLOGICAL SOCIETY OF WASHINGTON ORGANIZED Marcy 12, 1884 The regular meetings of the Society are held in the U. S. National Museum on the first Thursday of each month, from October to June, in- elusive, at 8 P.M. Annual dues for members are $4.00, initiation fee $1.00 (U. 8. curren- cy). Members are entitled to the Proceedings, and manuscripts sub- mitted by them are given precedence over any submitted by non-members, OFFICERS FOR THE YEAR 1953 moeorary Fvesiaent oo ee ee 8 Ae AUR EN A SCARE ORCI RADU CMC '" SSGI NS POU SOHPAAB ETON GONE sine Stra Le a al Ue a A. B. GURNEY menona Veee President. PL Rise Reoording Secretary —...---___ CK LIE O'NEILL Corresponding Secretary — W.-C ARLO M. VANCE PURER cS a ese he eee 8 TNS aes a CE a es A NEEM CARY YE OTST OC LET AR TSS BS ESOP PU SA MOOR ne HERBERT J. CONKLH Executive Committee _-..__.__ _W. B. Woop, ALAN Stone, W. D. REED Nominated to represent the Society as Vice President of the Washington Academy of Sciences _.......__ BW. Poo PROCEEDINGS ENTOMOLOGICAL SOCIETY OF WASHINGTON Published bimonthly beginning with February by the Society at Washington, D. C. Terms of Subscription: $4.50 per annum, both domestic and foreign, payable in advance (U. S. currency). Remittances should be made payable to the Entomological Society of Washington. The Society does not exchange its publications for those of other societies. Authors will be furnished copies of the number in which their articles appear at cost to the Society, or reprints of such articles, at the follow- ing rates, plus postage and insurance, provided a statement of the number desired accompanies the returned proofs. 2pp. 4pp. S8pp. 12pp. 16 pp. Covers 50 Gopies C800. 8.00) 5.00 «325.60 }§~66.25 «4.00 Son penes BD S80 4600 °° Fad. B25 298 Additional copies per 100... 1.00 1.15 2.00 2.60 3.15 1.50 Purchase of reprints by institutions whose invoices are subject to notarization or other invoice fees will have the cost of such fees added to the purchase price. Iilustrations in excess of one full page line cut are to be paid for by the author. Immediate publication may be obtained at author’s ex- pense. All manuscripts should be sent to the Editor, U. S. National Museum, Washington 25, D. C. The Corresponding Secretary, Custodian, and Treasurer should be addressed care Bureau of Entomology and Plant Quarantine, Washing- ton 25, D. C. PROCEEDINGS OF THE ENTOMOLOGICAL SOCIETY OF WASHINGTON FEBRUARY 1953 No. 1 VOL. 55 THE GENUS HALMATHRIPS HOOD (THYSANOPTERA, THRIPIDAE) By Lewis J. SraAnNARD, JR., [/linois Natural History Survey, Urbana The first specimen of Halmathrips was collected in 1917, but no other specimens referable to this genus were found until the discovery of the specimens representing the three new species described herein. Even with the knowledge of three additional species, no information on the host plants of any of the species in the genus can be given. All four species were found after they had been attracted to hehts. The geno- type was taken from a window pane in Trinidad, and the three species described here were recovered from light traps in Honduras. Males of all are still unknown. One of the new species, becker’, is sufficiently distinct to be placed apart from the others. Instead of having an eight- segmented antenna and a transversely striate pronotum, as Is true in the typical species of Halmathrips, becker’ has a nine- segmented antenna and nearly all traces of the pronotal stria- tions have disappeared. To separately categorize beckeri, the subgenus Phaosothrips is proposed. The specimens designated the types of these new thrips were donated to the [hnois Natural History Survey by Dr. Edward C. Becker. I am much indebted to him for these and many other thrips from Honduras. Halmathrips Hood Halmathrips Hood, July 1936, Rey. de Ent. 6(2):248-249. Monobasie ; type species by original designation, Halmathrips citricinctus Hood. Tiny, somewhat stocky thrips with short heads, bulged eyes, long antennal styles, with a transverse apodeme across the middle of the pronotum, with but a single submarginal forewing vein. Known only from the American tropies. Of the genera I have studied, the closest relatives of Hal- mathrips appear to be Graphidothrips Moulton (1930, Rey. Chile de Hist. Nat. 34:272-3) and Dendrothrips Uzel (1895, Monog. Thysanopt., p. 159). All three genera have similarly formed heads with protruding eyes, short occipital regions, and with the ocellar triangle located well back on the head. 2 PROC. ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 Possibly the common feature of straight instead of wavy fringe setae of the wines indicates a common ancestor for these genera. Straight wine fringe setae is a primitive char- acteriestic, being found in the Aeolothripidae, Heterothripi- dae, and Phlaeothripidae. These stetae are wavy only in the higher groups, that is, the Merothripidae and most genera of the Thripidae. It is likely that Graphidothrips should be considered the nearest relative of Halmathrips. The form of the antenna of Graphidothrips stuardoi Moulton is similar, except for the leneth of the sense cones, to the type of antenna found in Hal- mathrips (Phaosothrips) beckeri, new species. Both species have the antenna nine-seemented with the terminal segments forming a long style. While not mentioned in Moulton’s origi- nal description, Graphidothrips bears a faint mid-transverse apodeme on the pronotum much in the manner of the species of Halmathrips. In other characters Graphidothrips is markedly distinet from Halmathrips. The hind tarsi of Graphidothrips are ex- tremely lone; in leneth each of these one-segmented tarsi is nearly as long as its respective tibia. In Halmathrips, the one- segmented hind tarsus is at the most much shorter than the hind tibia. Graphidothrips stwardoi Moulton, known from Chile, feeds on Freus. A more distant relative of Halmathrips is Dendrothrtps. Like Graphidothrips and one species of Halmathrips, Dendro- thrips has nine segments in the antenna. Unlike either of the former genera, Dendrothrips does not have the terminal an- tennal segments formed as a lone style. Perhaps most im- portantly. Dendrothrips is set apart from Halmathrips and Graphidothrips by the lack of a mid-transverse apodeme across the pronotum. The widely distributed Dendrothrips contains several species that feed on the leaves of a variety of temperate, deciduous trees and shrubs. Kpy TO HALMATHRIPS 1. Antenna 9-segmented; pronotal surface smooth with hardly any trace of transverse striations, fig. 1 beckeri, new species Antenna S-segmented; pronotum distinctly transversely striate, fig, 5 : : 2 2. All abdominal segments brown; forewimg with three dark bands, fig. 7 : tricinctus, new species Basal abdominal segments pale yellow to white; forewing with ve two dark bands - : : z } 3. Forewing tip pale, distal dark band not continuous to the wing apex citricinctus Hood Forewing tip brown, distal dark band continuous to the wing apex debilis, new species PROC. ENT. SOC. WASH., vol. 55, NO. 1, FEBRUARY 1953 3 Halmathrips (Phaosothrips) beckeri. Fig. 1, dorsal aspect of head and prothorax; fig. 2, Metanotal striations; fig. 3, outline of terminal seg- ments of right antenna. Halmathrips (Halmathrips) debilis. Fig. 4, metanotal striations. Halmathrips (Halmathrips) tricinetus. Fig. 5, dorsal aspect of head and prothorax; fig. 6, metanotal striations; fig. 7, right forewing. 4 PROC. ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 Halmathrips Subgenus Halmathrips Hood Head broad and short, mouthcone blunt when viewed from above, extending across the prosternum; posterior of head with a thickened, dorsal ridge. Eyes strongly protruding anteriorly and laterally, extended posteriorly more on the ventral surface than on the dorsal surface of the head. Antenna eight-segmented with forked sense cones on third and fourth segments. Maxillary palp two-segmented. Pronotum short and broad, closely, transversely striate, with but a single pair of major setae which are placed one on each of the posterior angles, with a complete, transverse apodeme across the middle. Mesosternellum fused to meta- sternum so that no suture is present between the meso- and metasternum. Tarsus with but one segment, each hind tarsus with a pair of stout spurs. Forewing with but one main submarginal vein on which there are few setae, fringing setae not wavy. Most abdominal tergites, at the sides, with transverse striae which are finely subdivided by minute, iongitudinal ridges, median portions of abdominal terga, except tergum one, without sculpture. Part of the eighth abdominal tergum and _ all of the ninth and tenth tergites with microtrichiae, most abdominal sternites transversely striate like pronotum, tenth abdominal segment rectangular, not pointed, and undivided dorsally. Halmathrips (Halmathrips) citricinctus Hood Halmathrips citricinctus Hood, July 19386, Rev. de Ent. 6(2) :249-252, fig. 1. Type loeality: Verdant Vale, Trinidad, B.W.1. This, the type species, is known only from a single female specimen. It is described as being bicolored brown and _ yel- low, with reddish, subintegumental pigments. Judging from the illustrations, the wines of citricinetus, which have only two dark bands, are less out-curved than are the wings of the other species of the genus. Halmathrips (Halmathrips) tricinctus, new species Moc 5 6 Figs. 5, 6, 7 Female (macropterous).—Length, distended, exclusive of the anten- nae, about 0.75 mm. General color ight brown and bright red. Light brown: head, prothorax, abdomen, basal segments of the antennae, the legs, except the tips of the tibiae and all the tarsi, three bands on each of the forewings, fig. 7, and the central portion of the trailing edges of the hindwings. Pale brown to colorless: terminal segments of the anten- nae, tips of tibiae, all of tarsi, two bands on the forewing, fig. 7, and most of the hindwing. Yellow: subintegumental pigments of the cen- tral portions of the head, thorax, and abdomen. Bright red: subintegu- mental pigments around the ocelli, on sides of thorax, sides of the ab- domen, and a line along the veins of the forewings. Head as in fig. 5; outer fork of sense cone of the fourth antennal seg- ment long, extending beyond the fifth antennal segment. Prothorax as PROC. ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 5 in fig. 5; metanotum sculptured as in fig. 6. Forewings as in fig. 7, slightly out-curved. Abdomen as for genus, medial portion of the first abdominal segment strongly marked with striae; comb on eighth ab- dominal segment complete, preceding segment combs incomplete, being reduced to small, medial combs on second to sixth segments. Types.—Holotype ¢@, La Ceiba, Honduras, June 12, 1949, in hight trap (EK. C. Becker) ; 22 paratypes, same data as for holotype, except May 22, 1949, and June 17, 1949. Halmathrips (Halmathrips) debilis, new species Fig. 4 Female (macropterous).—Length, distended, exclusive of the anten- nae, about 0.6 mm. Bicolored light yellowish brown and white. Light brown: head, thorax, sixth to tenth abdominal segments, basal segments of the antennae, basal segments of the legs, a band at the base of the forewing including the scale, and another band on the apical half of the forewing. Pale white to colorless: apical segments of the antennae, terminal segments of the legs, first to fifth abdominal segments, a sub- median band on the forewing, and most of the hindwings. Bright red: sides of the thorax, sides of sixth to eighth abdominal segments, and the basal edges of the forewings. Head similar to fig. 5. Outer fork of the sense cone of the fourth antennal segment about as in citricinctus, not extended much beyond the middle of the fifth antennal segment. Prothorax similar to fig. 5. Meta- notum sculptured as in fig. 4. Forewings less out-curved than tricinetus, more as in citricinctus. Medial portion of first abdominal segment weakly marked. Comb on eighth abdominal segment complete. Type.—Holotype 9, La Ceiba, Honduras, June 7, 1949, in heht trap (KE. C. Becker). Halmathrips Subgenus Phaosothrips, new subgenus This subgenus differs from the typical subgenus by the following characteristics : Head not so short nor so broad; dorsal surface of eye prolonged pos teriorly slightly farther than that part of the eye that is ventral; an tenna nine-segmented, fig. 3, instead of eight-segmented; striae of pro notum and abdominal sterna nearly lost; ocellar triangle spread out more on the head; transverse, pronotal apodeme interrupted in the middle. Type species.—Halmathrips (Phaosothrips) beckeri, new species. Halmathrips (Phaosothrips) beckeri, new species BUSS lea Female (macropterous): Length, distended, exclusive of the antennae, about 0.95 mm. Generally bicolored, brown and white. Brown: head, thorax, all of first to third and sixth and seventh antennal segments and hasal three-fourths of fourth antennal segment, most of segments of 6 PROC. ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 the first two pair of legs, the forewings, a median spot on first to seventh abdominal terga which tends to widen until on eighth segment it nearly covers the entire tergum, and covers all of ninth and tenth segments. Pale yellow to white: tip of fourth antennal segment and all of fifth, eighth, and ninth, all tarsi, all of the hind legs and venter and portions of the sides of the terga of the abdomen except on segments nine and ten. Vivid red: subintegumental pigments of the first four antennal seg- ments, ocellar pigments, extensive areas of the thorax, and traces m ab- domen in the areas of the dark spots. This red often fades to orange in the thorax and in the abdomen. Head as in fig. 1; outer fork of sense cone of fourth antennal segment extending only to a point midway of the fifth segment. Prothorax as in fig. 1. Metanotum sculptured as in fig. 2. Forewing with about 9 or 10 setae along the submarginal vein. Median portion of first abdominal seg- ment weakly marked. Comb on eighth abdominal segment complete. Types.—Holotype ¢?, La Ceiba, Honduras, June 11, 1949. in hght trap (E. C. Becker) ; 22 paratypes, same data as for holotype; 22 paratypes, same data as for holotype except May 21, 1949. SOME INTERESTING CHINESE SPECIES OF GLOSSOSOMA (TRICHOPTERA, RHYACOPHILIDAEF) 1 By Herpert H. Ross? and Cur-Ling Hwane? Among some miscellaneous Chinese caddisfly material in the collections of the Chicago Natural History Museum and the United States National Museum were found specimens of three new species of Glossosoma, closely allied only to the Chinese species minutum Banks. All four are unusual in lack- ing specialized male characters which would place them in any of the known groups of the genus, and characterize the species as persistent forms of phyletic lines more primitive than any heretofore described. They may be related to the Tibetan subgenus Lipoglossa Martynov, but since we have not studied material of this genus no definite comparison with it can be made. We feel that until the relationship of these particular Chinese species to Lipoglossa can be made clear, it is better not to describe new subgenera to accommodate the Chinese forms, but rather simply to state that they represent the sim- plest known forms in the genus. 1This paper is a joint contribution from the Section of Faunistic Surveys and Insect Identification, Illinois Natural History Survey, and the Department of Entomology, University of Illinois. “Tilinois Natural History Survey, Urbana. 3Formerly, University of Illinois, Urbana. 9 ) oe 19 VOL. 55, NO. 1, PEBRUARY WASH., ENT. SOC. PROC, TAENIATUM SELLATUM AVELETA Male genitalia of Glossosoma. oa es Sek pe Ps POON a eae Dorocordulia Abdomen with conspicuous elevated Sid sharp pointed dorsal hooks; lateral spines on segment 9, 1.6 times as long as that SERIE Min eee on = ee ee eee 2 = Miathore PROC, ENT, SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 35 In Byers (1936) the reared, ultimate exuvia runs to rubrie 15, whieh may be modified to include Miathyria as follows: 15. Lateral abdominal appendages nearly as long as the inferiors; ate rallye tae pie ween eae ae eee Boone NO ea he Dorocordulia Lateral abdominal appendages about half the inferiors na al AMMO ACET A ISO LACL Gy (tl career nett Me eo SS aes Miathyria Lateral setae 9-14 (Leucorrhinia, Celithemis, Sympetrum) 16 Additional characters given by Walker (1916, 1917), Garman (1927), Byers (1930, 1936), Broughton (1928), Needham and Fisher (1936), and Wright and Peterson (1944) will contrast Miathyria with Celithemis, Macrodiplax, Leucorrhinia, and Sympetrum. REFPRENCES Bick, George H., 1951. The nymph of Libellula semifasciata Burmeister. Proc. Ent. Soe. Wash. 53(5): 247-250. , James F. Aycock, and Andrew Orestano, 1950. Tauriphilia australis (Hagen) and Miathyria marcella (Selys) from Florida and Louisiana. Proc. Ent. Soe. Wash. 52(2) : -81-84. Broughton, Elsie B., 1928. Some new Odonata nymphs. Canad. Ent. 60: 32-34. Byers, C. Francis, 1930. A contribution to the knowledge of Florida Odonata. Uniy. Fla. Pub. Biol. Sei. Series 1(1): 1-327. ——_———.,, 1936. The immature form of Brachymesia gravida with notes on the taxonomy of the group. (Odonata: Libellulidae). Ent. News 47: 35-37, 60-64. , 1926a. Records of Florida dragonflies. II. Fla. Ent. 19(3): 40-42. Calvert, Phillip P., 1927. Report on Odonata, including notes on some internal organs of the larvae collected by the Barbados-Antigua expedition from the University of Iowa in 1918. Uniy. Iowa Studies in Nat. Hist. 12(2): 3-44. Garman, Philip, 1927. The Odonata or dragonflies of Connecticut. Conn. Geol. and Nat. Hist. Survey Bull. 39: 1-331. Geijeskes, D. C., 1984. Notes on the odonate fauna of the Dutch West Indian Islands Aruba, Curacao, and Bonaire, with an account of their nymphs. Internationale Revue der Gesamten Hydrobiologie und Hy- drogeographie 31: 287-311. Klots, Elsie B., 1932. Insects of Porto Rico and the Virgin Islands. Odonata or dragonflies. N. Y. Acad. Sci. Survey of Porto Rico and the Virgin Islands 14(1): 3-107. Lieftinck, M. A., 1930. Fauna Buruana. Odonata II]. A review of the dragontly-fauna of Boeroe, in the Moluceas, with descriptions of new or interesting species, and an account of their larvae. Treubia 7 (Suppl.) : 305-330. Needham, James G., 1933. New records of Odonata for the United States. Ent. News 44: 98. 36 PROC. ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 —————, and Elizabeth Fisher, 1936. The nymphs of North American Libelluline dragonflies. Trans. Amer. Ent. Soe. 62: 107-116. Schmidt, Erich, 1951. Selerotizations in the lateral body wall of the nymphal abdomen in Odonata. Ent. News 62(4): 125-134. Walker, E. M., 1916. Nymphs of North American species of Leucorrhinia. Canad. Ent. 48: 414-422. 1917. The known nymphs of North American species of Sympetrum. Canad. Ent. 49: 409-418. Wright, Mike and Alvah Peterson, 1944. A key to the genera of anisop- terous dragonfly nymphs of the United States and Canada (Odonata, Sub Order Anisoptera). Ohio Jour. Sei. 44(4): 151-166. THE SCIENTIFIC NAME OF THE SCREW-WORM, WITH A NOTE ON PARALUCILIA FULVICRURA (DipTERA, CALLIPHORIDAE ) By Curtis W. Sasrosky, Bureau of Entomology and Plant Quarantine, U.S. Department of Agriculture, Washington, D. C. For many years uncertainty and difference of opinion have existed as to the correct generic and specific names for the serew-worm of the Western Hemisphere. For the generic name both Callitroga and its synonym Cochliomyia have been used, the still older name Chrysomya being now universally recog- nized as applying only to the Old World screw-worm flies. For the specific name both americana and hominivorax are used by modern authors, the former principally in North America. It is certainly desirable to reach sound and uniform conclusions in the use of these names as soon as possible, and the time seems appropriate for steps in that direction. During a recent trip to Europe it was possible for me to examine, in the Muséum National d’Histoire Naturelle in Paris, the types of Calliphoridae described by Robineau- Desvoidy and Macquart. I paid particular attention to those that concerned the screw-worm flies, especially those left im questionable status in Hall’s revision, ‘* The Blowflies of North Ameriea’’ (1948). I am greatly indebted to Monsieur E. Séguy for information and many courtesies in expediting the work during my brief visit to Paris. Types of the following species, labeled in the handwriting of their authors, were examined and found to be referable to the synonymy of Callitroga macellaria (F.). The data on the labels are given in quotation marks. The species of Robineau- Desvoidy were described in his ‘‘Essai sur les Myodaires’’ (1830) and those of Macquart in various parts of the ‘‘Dip- teres Exotiques’’; the complete references are given in Hall (1948). a) PROC. ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 Chrysomya affiinis R. D.: Type female, ‘‘ Brésil, Delalande.’’ C. alia R. D.: Type male, ‘‘du nord de la Capit.—de St. Paul’’ [Brazil]. C. caerulescens R. D.: Type male, ‘‘Caroline, 1’herminier.’’ C. lepida R. D. (1830, p. 448): Type (headless), ‘‘du nord de la Capit—de St. Paul’’ [Brazil]. Not listed in Hall (1948) and should be added to the synonymy under macellaria. C. Lherminieri R. D.: Type male, ‘‘Caroline, ]1’herminier.’’ C. socia R. D. (1830, p. 447): Type female, ‘‘du nord de la Capit.— de St. Paul’’ [Brazil]. Not listed in Hall (1948) and should be added to the synonymy under macellaria. C. viridula R. D.: Type female, ‘‘du midi de la Capit.’’ [Brazil], ‘‘de Goyaz’’ (2? spelling). Lucilia durvillei Macquart (1843): Type female, ‘‘Paytou de Pérou, b Me } Dury.’’ This specimen bears the label ‘‘ Lucilia peruviana,’’ apparently a manuscript name that was supplanted by durvillei in publication. L. vittata Macquart (1843): Type, ‘‘ Nouv. Holl., Durville.’’ L. rubrifrons Macquart (1851): Type female. Calliphora tibialis Macquart (1851): Type male, and female. Hall (1948, p. 157) listed C. tibialis in the synonymy of Paralucilia fulvipes, but if these specimens are the true types, as they seem to be, it must be referred to the synonymy of macellaria. Hall also included it there on page 139, but as Lucilia tibialis, possibly influenced by information that the pair in the Paris Museum are so labeled in Macquart’s handwriting. In any ease the name is of no consequence, because it is a homonym of Calliphora tibialis Macquart (1846), from Tasmania. One other obscure name, Chrysomya plaei Robineau-Desvoidy, is rep- resented in the collection by a small male (‘‘Plée 1826’’) which is now headless and in poor condition. The rules of the Museum prohibit dissee- tion of unique examples, so that its identity cannot be confirmed, but it appears to be macellaria and may conveniently rest in the synonymy of that species. I also examined the types of several early Walker names—Musca cer- tima (1849), M. phauda (1849) and M. fasciata (1856)—in the ecollee- tion of the British Museum (Nat. Hist.), and confirmed their previously published synonymy with macellaria. I did not find the type of Musca turbida Walker (1856), but the name need not concern us: it is a homo- nym of M. turbida Wiedemann (1830). The old Robineau-Desvoidy and Maequart names which were listed as possible synonyms of americana or macellaria by Hall (1948) have now been found to refer to macellaria, the secondary screw-worm. The oldest remaining name that is accepted as applying to the screw-worm is honinivoraxr Coquerel (1858)!, based on a 17t is unfortunate that the natural abbreviation for Coquerel, viz Coq., is also that long and widely used for Coquillett. Since the name Coquerel oceurs relatively seldom, I suggest that it be written in full to avoid confusion. If an abbreviation is desired, Cqrl. would be distinctive. 38 PROG. ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 fly reared from a case of human myiasis in Cayenne, French Guiana. This name was adopted by Aubertin and Buxton (1934, Annals Trop. Med. Parasitol. 28: 245-254, who recog- nized that it was the screw-worm, described as a new species (americana) in 1933 by Cushing and Patton. Many European and South American workers have been using the name hominworax, while the North Americans in general have con- tinued to use americana. Hall (1948) recognized that there were older available names than americana, but he wisely re- frained from making any change until the status of names older than either americana or hominivorax could be clarified. Now that this has been done, it is clear that the oldest valid and available name for the species is hominivorax Coquerel. Accordingly, the correct scientific name of the serew-worm of the New World, hitherto called Cochliomyia americana or more recently Callitroga americana, is Callitroga homimivorax (Coquerel). Paralucilia fulvicrura (R. D.) The species with white squamae recognized as Paralucilia fulvipes (Maeq.) by Hall (1948) falls im synonymy under the older name fulvicrura, a name which was accidentally overlooked. The Paris Museum has two headless specimens, ‘‘ Montevideo, 7bre Obre 1820,’’ one bearing Robineau-Desvoidy’s handwritten label as Chrysomya fulvi- crura. The species was called Paralucilia affinis (R. D.) (synonym, Chrysom- ya fulvicrura R. D., from its type) by Shannon (1926, Proc. Ent. Soe. Wash. 28: 127), though apparently without seeing the type of affinis. Aubertin and Buxton (1934, Ann. Trop. Med. Parasitol. 28: 246) adopted P. fulvicrura on the authority of Aldrich, who had seen the types of both affinis and fulvicrura. However, Smart (1937, Diptera Pa- tagonia & S. Chile, Pt. VII,( fase. 3, p. 379) followed Shannon in using affinis. Hall (1948) correctly referred affinis to Callitroga, but missed fulvicrura (1830) in adopting P. fulvipes (Maequart, 1843). Two other species listed by Hall as questionable synonyms of fulvipes may be mentioned for the record. The female labeled in Macquart’s handwriting as Calliphora rufipes is Paralucilia fulvicrura but it bears a small dise of green paper said to mean ‘‘Amerique,’’ whereas the original description said ‘‘Java.’’ Similar confusion exists for Calli- phora violacea Macq., for the original deseription said ‘‘D’Afrique,’’ but the female labeled as violacea in Macquart’s handwriting is from “Mr. Gay—Chile.’’ This specimen is actually Callitroga macellaria. Fortunately for present purposes, both names are junior synonyms of their respective species, and we need not speculate on the confusion. PROC. ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 39 THE OCCURRENCE OF BLATTELLA VAGA HEBARD IN TEXAS (ORTHOPTERA, BLATTIDAE ) By Paunt T. Rinerp, Texas Agricultural Experiment Station, Weslaco While I was searching for specimens of a species of Conip- sodes (Blattaria, Polyphagidae) I collected some specimens of wingless roaches from beneath duff under a row of athel trees (Tamarix articulata) growing on the grounds of the Agricultural Experiment Station, Substation 15, at Weslaco, Texas. Dr. A. B. Gurney identified these specimens as nymphs of a species of Blattella. He suggested rearing some of the nymphs to the adult stage in order to determine if the species were the common German cockroach, Blattella germanica (1.), living outside near buildings, or if another species of Blat- tella were established in the area. Such a species, if present. would be encountered occasionally and be confused with the common household species. Following this suggestion, I reared adults and sent them to Dr. Gurney, who identified them as B. vaga Hebard, and suggested publishine this note on the Texas record for this species. Blattella vada was described by Morgan Hebard, 1935 (Trans. Amer. Ent. Soc. 61; 112-114, pl. 4, figs. 1-4) from ma- terial collected in 1933 at Phoenix, Arizona, by KE. D. Ball. Hebard stated that vaga was undoubtedly an introduction, and he believed that it was of Asiatic origin. He recorded the species in the United States from along the Gila and Colorado rivers in Arizona and California. Specimens of vaga in the U.S. National Museum are from Yuma and Sacaton, Arizona, and Indio and Patterson. California. Roaches superficially resembling vaga have been observed rather commonly in the Lower Rio Grande Vallev of Texas. though Hebard, 19438 (Trans. Amer. Ent. Soe. 68: 2521276) reviewed the roaches of Texas, and at that time made no mention of vaga. When vaga was originally described, Hebard related that Ball observed that it occurs in Arizona only in areas of rather extreme alkali conditions. This does not hold true in Texas. Flock, 1941 (Jour. Econ. Ent. 34: 121), who has discussed the distribution and ecology of vaga, did not indicate any restric- tion to alkaline areas. He found vaga typically an inhabitant of irrigated fields and vards, with some tendency to injure plant seedlings. Flock also reported that when field conditions are very dry this roach may enter houses in large numbers, usually temporarily. On November 23, 1951, nymphs of vaga occurred at Weslaco to the extent that five or six would be seen when about a foot square of the duff was disturbed; no adults were observed on that oceasion. In March 1952. the duff had dried and only 40 PROC, ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 after considerable search could a single specimen be found in this locality. On April 28, 1952, two adults of vaga were collected near a sink in the Experiment Station office at Weslaco. Later, on May 27, vaga was found to be rather abundant in clumps of Rhodes grass between Weslaco and Donna, Tex. Both young and adults occurred there, and three or four could usually be found easily in a single clump. Many of the females were carrying o0theecae. From observations made during the rearing of the nymphs to adults, there was no evidence that any food we offered the caged nymphs was eaten; they apparently existed entirely on decaying organic matter. Blattella vaga is shghtly smaller and of a more delicate ap- pearance than B. germanica, and is best recognized in the field by its blackish face. This character was indicated by Doner and Thomssen, 1943 (Soap and San. Chem. 19 (9): 94), who included vaga in a simple key to a few common roaches. Strue- turally, the male sexual organs provide the most reliable dis- tinguishine characters for vaga. REDESCRIPTION OF THE GENUS BURTINUS STAL AND DESCRIPTION OF A NEW SPECIES FROM PUERTO RICO (HEMIPTERA, COREIDAB) By J. MALDONADO CAPRILES, Department of Biology, University of Puerto Rico, Mayaguez The genus Burtinus was described by Stal in ‘‘ Till Kanne- domen om Coreida,’’ Ofvers. Svenska Vet.-Akad. Forh. 16: 459, Dee. 1859. He included only the species notatipennis Stal. In 1881, Distant described Alydus femoralis in Biologia Centrali-Americana, Rhynchota, Vol. 1, p. 158, pl. 15, fig. 9. Distant later decided that femoralis should also be placed in Burtinus (loc. cit., p. 373). Barber (1914, Bul. Amer. Mus. Nat. Hist. 33 :521), however, found femoralis to be a synonym of notatipennis. The genus has therefore remained monotypic. The purpose of the present paper is to add a second species and to recharacterize the genus. The author is much indebted to Dr. R. I. Sailer and to Prof. José A. Ramos for their assist- ance in writing this paper. Genus Burtinus Stal Burtinus Stil, 1859, Ofvers. Svenska Vet.-Akad. Forh. 16: 459. Hlongate, slender, depressed above, convex beneath; broadly rounded anteriorly and posteriorly. Shghtly wider near base of wings. Pronotum and head declivous. PROC. ENT, SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 4] Head broader across eyes than long; as long as base of pronotum. Tylus slightly exceeding jugae. Antennal tubercle very short. First anten- nal segment surpassing apex of head. Second antennal segment slightly longer or longer than first; fourth segment the longest, cylindrical, stoutest. Rostrum slender, reaching mesocoxa; first segment the longest, fourth longer than third. Gula slightly wider than width of an eye. Pronotum wider than long, trapezoidal; edges carinate, smoothly wavy, with very shallow indentation at middle of hind margin, Apical angles acute, without spines, punctate. Fig. 1, Burtinus notatipennis Stil, dorsal aspect of male genitalia; fig. 2, B. luteomarginatus, new species, ventral aspect of male genitalia ; fig. 3, B. luteomarginatus, dorsal aspect of male genitalia. Scutellum longer than wide, punctate. Hemelytra with corium opaque, punctate, with apex extending to nearly three-fourths of membrane. Membrane slightly exceeding tip of abdomen. Osteolar orifice slitlike, between meso and metacoxa, prolonged as a very short, curved canal. Legs slender, unarmed, except hind femur which has 3 or 4 moderately long, stout spines; these longer than widest portion of hind tibia; 1 or 2 short spines between last two. First seg- ment of hind tarsus one and a fourth times the length of second and third together. External genitalia of male as typified by Burtinus notatipennis Stal, fig. 1. Claspers projecting upward, with their apices broad, flattened, and curved forward. Median process of hypopygium much widened apically and with latero-apical angles opposed to apices of claspers. Dorsoposterior margin of hypopygium with two long, slender processes. Genotype: Burtinus notatipennis Stil, 1859 (only included species). Burtinus is very close to Alydus Fabricius and Megaloto- mus Fieber, sharing several characteristics with both genera. Alydus differs in having the pronotum longer than wide, the basal joint of hind tarsi twice the length of the other two united, and in the type of the genitaha. MWegalotomus differs 42 PROC, ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 in having the pronotum longer than wide, the basal joint of hind tarsus more than twice the length of the other two united, the hind femora armed beneath with a row of stout spines, and in the type of the genitalia. Burtinus luteomarginatus, new species Ries. 2. 3.4 Male (fig. 4) —Head dorsally, brown with an elevated lighter median Jongitudinal vitta. Covered with long yellowish hairs; short appressed golden hairs on vitta. Eyes dark brown, large. Ocelli brilliant, ele- vated. Antennal segment I stramineus; IT and III with basal two- thirds to three-fourths, and IV with basal third stramineus; apical por- tions blaekish brown; covered with moderately long hairs. Rostrum biaeckish. Pronotum dark brown, lateral margins yellowish; posterior margin with a small yellowish spot at middle; covered with scattered golden yellow hairs. Secutellum dark brown, with a small yellowish spot at tip. Hemelytra brown, costal area yellowish; except membrane, covered with seattered golden yellow hairs. Membrane fuseous. Body laterally, from base of beak to end of abdomen with a broad yellowish brown stripe, spotted with red. An elongated yellowish area ventral on first visible abdominal segment; rest of abdomen, meso and metasternal areas blackish. Margin of connexivium yellowish. All three pairs of legs similarly colored; coxa, trochanter and femur black; tibia yellow- ish with blackish brown apex; second and third segments and claws blackish brown. Head across eyes wider than long; slightly shorter than pronotum. Lengths of antennal segments as follows: I, 20; IJ, 29; TI, 29; IV, 45. First segment surpasses apex of head. Rostrum extending to middle coxa; lengths of segments as follows: I, 20; II, 17; ITI, 8; IV, 12. Pronotum wider than long; very narrow collar. Anterior calli not prom- iment, narrow, slightly elevated at middle, rough, not punctate. Pos- terior lobe deeply and closely punctate. Depressed lateral and hind margins. Posterior margin with a shallow broad indentation at middle. Seutellum longer than wide, punctate. Hemelytra with costal margin slightly coneavely sinuate about one-half from base. Hind tibia terete, straight, without spur at apex. Basal joint of hind tarsi one and a fourth times the length of the second and third united. Osteolar opening distinet, slithke, between meso and metacoxae. Hind femur with three medium sized spimes at apex, two very short stout spimules before and after last spime. Overall length 11.0 mm. Male genitalia—Claspers with apieal portions outwardly projeeted, apical margin rounded in outline, fig. 2. Median process of hypopygium with latero-apical angles unarmed, angulate; central lobe obtusely rounded. Dorsal processes reaching to elaspers, straight, slender and tapering, fig. 3. Female—Slightly darker than male, coloration otherwise similar. 2 Vv 4 2 vo 5 ENT, SOC. WASH., VOL. 55, NO. 1, FEBRUARY 19 PROC, ile holotype. Fig. 4, Burtinus luteomarginatus, new species, m 44 PROC. ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 This species was described from one male and one female collected in light traps and one male by sweeping vegetation near the beach at Ponce, Puerto Rico. Types—Holotype ¢, Ponce, Puerto Rico, August 15, 1946. U.S. N. M. no. 61564. Allotype, 2, same locality, July 10, 1947 (U.S. National Museum). Paratype, ¢, same locality, August 1947 (in the author’s collection). THE GENUS METACOLUS IN NORTH AMERICA (HYMENOPTERA, CHALCIDOIDEA ) In the Hymenoptera of America North of Mexico—Synoptie Catalog (Muesebeck et al., U.S. Dept. Agr. Monog. 2, p. 549), the pteromalid genus Wetacolus Foerster is placed in the tribe Pteromalini. Actually it is almost impossible to characterize that tribe in such a way that Metacolus will be retained in it, while excluding the genus Rhaphitelus Walker. The latter is the only North American genus now placed in the tribe Rhaphitelini. Xestudy of the European genotype species, as well as the North American forms referred to Rhaphitelus and Metacolus, shows clearly that the two belong in the same tribe. Both have incomplete parapsidal furrows, sessile abdomen, each hind tibia with a single spur, and the marginal vein so greatly thickened that it is only two and one-half to three times as long as wide. Consequently Metacolus should be removed from the Pteromalini and be placed in the Rhaphitelini. The above-cited catalog lists two North American species in Metacolus, bifasciatus and fasciatus, both described by Girault on page 14 of his privately-published paper, Descriptiones Stellarum Novarum, 1917. The second of the two species was described from specimens from New Mexico, the first from ones thought to have come from West Virginia. Actually the latter specimens came from the Black Hills, South Dakota, as is shown by the Hopkins U.S. records. Furthermore, study of the types of these two convinces me they are identieal. Accordingly M. bifasciatus Grit. should be placed as a syno- nym of fasciatus Grit., the latter having line priority (new synonymy ).—B. D. Burks, U. 8. Bureau of Entomology and Plant Quarantine. PROG. ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 45 A NEW BLACKFLY SPECIES FROM CALIFORNIA (DipTERA, SIMULIIDAE) By R. W. CoLeMAN, San Francisco, Calif. The author made a detailed, state-wide survey of blackflies in California throughout 1947-1951. During this time he ecol- lected Simulidae from nearly every county in the state. A new species is here described from pupae and from reared adult specimens collected from this survey. Cnephia stewarti, new species Adult female.—Frons dark brown with pruinosity; antennae brown; viewing mesoscutum anteriad from prescutellar area mesoscutum dark brown with pale golden hair; mesoscutum with three indistinct silvery lines in the form of one median line and two other lines on either side of the median line; pleura dark brown; wings with anterior veins dark brown; basal section of radius with macrotrichia above; radial sector forked terminally, figs. 1, 2, stem vein dark pilose; halteres and. stalk of halteres pale; legs brown with golden yellow hairs; tarsal claws with basal tooth large, tooth over one-half length of tarsal claw, fig. 3, ab- domen brownish black with shght vestiture of golden hairs. Genitalia: Genital rod expanded into widely divergent arms; apical parts of arms developed into plates. Adult male—Face and frons brownish-black; antennae brown; meso- scutum dark brown to brownish black with golden pilosity and with same mesonotal pattern noted in female; pleura dark brown to brownish black; wings with anterior veins dark brown; basal section of radius with macrotrichia above; radial sector forked terminally; stem vein dark pilose; halteres and stalk of halteres brown; coxae dark brown; legs brown with slight pilosity; tarsal claws bifid; abdomen brown to brown- ish-black. Genitalia: Dististyle shorter than basistyle; apex of dististyle with two spines; basistyle longer than wide; adminiculum slightly longer than wide; basal prongs of adminiculum strongly chitinized. Pupa.—Cocoon of indefinite shape; respiratory filaments six in num- ber, fig. 4, anterior pair of filaments fuse to a common base with one posterior pair; tergite four without series of small spines near its an- terior margin; sternite five with four spines; tail hooks present. Type locality.—Near Spring Garden, Plumas County, Cali- fornia. The type specimen has been deposited in the collee- tions of the U. S. National Museum. Distribution.—Near Spring Garden, Plumas County, Cali- fornia, May 19. 1948 (W. W. Wirth and ‘R. W. Coleman) ; approximately 6 mi. n.w. of Bassett’s Station, Sierra County, California, May 28, 1950 (M. B. and R. W. Coleman). This species has been collected only in May in California, and from the surfaces of small rocks. It was collected from a temporary stream near Sprine Garden and from a snow run- 46 PROC. ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 Fig. 1, wing; fig. 2, magnification of radial sector; fig. 3, tarsal claw; fig. 4, pupa. Drawings by F. Abernathy. off near Bassett’s Station. It has been taken in areas as high as about 6400 feet above sea level. Cnephia stewarti differs from Cnephia osborni (Stains and Knowlton), a closely related species, in the adult stage in that, in the female of C. stewart, the mesoscutum bears three silvery white lines and the basal tooth of the tarsal claw is over one-half the length of the tarsal claw itself, while, in the female of C. osborni, no silver markings are present on the mesoscutum and the basal tooth of the tarsal claw is less than one-half the leneth of the tarsal claw. ENTOMOLOGICAL SOCIETY OF WASHINGTON 620TH REGULAR MEETING, OCTOBER 2, 1952 The 620th regular meeting of the Entomological Society of Washing- ton was called to order at 8 P. M. Thursday, October 2, 1952, in Room 43 of the U. S. National Museum, by President W. D. Reed. Thirty- four members and nineteen visitors attended. The picnic committee was complimented by President Reed on the success of the June picnic, enjoyed by all. New members elected to the Society were: Dr. Dayid Russell Cook, U. 8. National Museum, Washington 25, D. C. M. E. Yount, U. S. Bureau of Entomology and Plant Quarantine, Wash- ington 25, D. C. Dr. Boynton H. Booth, 910 Hume Mansur Bldg., Indianapolis, Indiana Major K. C. Emerson, 42nd A.I.B., A.P.O. 42, c/o Postmaster, New Yorks UNE Ye Professor Robert B. Kleinhans, 3535 Evanston Ave., Cincinnati 7, Ohio PROC. ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 47 Warren T. Johnson, Dept. of Entomology, Univ. of Maryland, College Park, Md. Robert M. Lee, V.F.B.1., College Park, Maryland Lt. John E. Scanlon, 8079 Army Unit, A.P.O. 613, Unit 3, ¢/o Postmas- ter, San Franciseo, California C. V. G. Morgan, Division of Entomology, Department of Agriculture, R. R. 1, Summerland, B. C., Canada Joe C. Elkins, 2710 Grayson Drive, Dallas, Texas Elbert B. Dixon, U. S. Bureau of Entomology and Plant Quarantine, P. O. Box 232, Christiansted, St. Croix Is., American Virgin Islands B. V. Peterson, Division of Biology, The University of Utah, Salt Lake City 1, Utah The Society voted to adopt a resolution to permit the program com- mittee to spend up to $45 per year for transportation of speakers and other incidental expenses in connection with programs. Arlo Vance reported that the Society had been invited to be repre- sented at the First Inter-American Congress of Pubhe Health at Havana, Cuba, from September 26 to October 1, 1952, and that Dr. Salvador Luis de la Torrey y Callejas had been appointed by President Reed to repre- sent the Society. Mr. Vance read the letter from Dr. de la Torrey re- porting that he had extended the greetings of the Society to the Congress. Mr. Vanee also gave the following obituary of Traber Norman Dobbins, 1896-1952: The sudden death from a heart attack of Mr. Dobbins at his home in Moorestown, N. J., on April 14, 1952, came as a shock to his friends and associates, ending almost 20 years of continuous service in the Bureau of Entomology and Plant Quarantine. He was born at Las Animas, Colorado, November 25, 1896. He received a medieal certifi- cate from the University of Mississippi in 1924, a B. S. degree from Mississippi State College in 1927, and a M. S. degree from Texas Agri- eultural and Mechanical College in 1932. In 1932 he was appointed field aid at the Japanese Beetle Laboratory, Mooretown, N. J., and in 1940 received his appointment as entomologist. He was transferred in 1946 to the Division of Cereal and Forage Insect Investigations at Beltsville, Md., where he assisted in investigations on the control of alfalfa, red clover, and peanut insects. An exhibit of abnormal specimens of Papilio turnus L. was shown by Elizabeth Haviland, who noted that this species was the subject of the first insect drawing made in America. T. L. Bissell gave a note on outbreaks of walking-sticks, Diapheromera femorata (Say), which he and E. N. Cory, A. B. Gurney, and O. L. Cartwright had observed at Polish Mountain and Fairview Mountain in Maryland. Examples of the insects were circulated, and their damage shown in slides of defoliated trees and specimens of oak branches from which the leaves had been stripped. Chestnut oak seemed to be a favor- ite food, although white oak, red oak, hackberry, hawthorn, hazelnut, shagbark hickory, huckleberry, black locust, shadbush and witchhazel were attacked. Grapevines and coniferous trees were not touched. 48 PROC, ENT. SOC. WASH., VOL. 55, NO. 1, FEBRUARY 1953 Kelvin Dorward gave the first scheduled speech of the evening, ‘‘De- velopment of the cooperative economic insect detection and reporting program.’’ This program relies on information about economié insect conditions obtained from voluntary cooperators in the 48 states and three territories. Clearing houses in each state or territory are responsible for receiving, reviewing, and forwarding to the Bureau of Entomology and Plant Quarantine items on insect activity. These items are published weekly in the Cooperative Economie Insect Report. Permanent files are maintained on domestic and foreign economic insects. In case of neces- sity the program provides a skeleton structure, readily expandable, to combat any attempts at biological warfare. (Speaker’s abstract) E. F. Knipling then gave the second speech of the evening, on ‘‘The possibilities of controlling serew-worms by releasing flies sterilized with gamma rays.’’ It has been shown that male screw-worm flies can be made sterile by exposing the pupal stage to 5,000 roentgens of X-rays or gamma rays. Normal females mated with sterile males deposit infertile eggs. Experiments are now underway in Florida in which large numbers of sterile flies are being released each week in a 1,200 square mile area. Animals having wounds are exposed in various locations in the area. Records are kept on the percentage of fertile and infertile egg masses deposited by screw-worms on these animals. It may be possible to achieve control or eradication of screw-worms by releasing sufficient numbers of sterile males over a period of a year or two, provided the natural population is not too large and the released sterile males com- pete with the normal wild males. Many ecological problems are involved in this investigation, and the feasibility of the method will not be known until further studies are conducted. (Speaker’s abstract) Visitors introduced included Robert R. McIntire and Walter CG. Atehe- son, students at the University of Maryland, Warren T. Johnson, in- structor, and Dr. Castillo Graham, a staff member; also N. A. Janjua of Pakistan and Col. and Mrs. Ralph W. Bunn. Adjournment 9:05 P.M. KELLIn O’NEILL, Recording Secretary ENTOMOLOGICAL SOCIETY OF WASHINGTON SPECIAL MEETING, OCTOBER 16, 1952 The Washington Academy of Sciences and the Entomological Society of Washington held a joint meeting in the New Cosmos Club on Thurs- day, October 16, 1952 at 8:15 P. M. President Walter Ramberg of the Academy introduced the speaker, Professor Carroll M. Williams of Harvard University, who spoke on his research on ““Morphogenesis and the metamorphosis of insects.’’ Colored slides illustrated the Ways in which the relationships of various organs affecting morphogenesis in insects and the effects on them of external factors were learned. After Professor Williams had answered a number of interested questioners, the meeting was adjourned by Acting President W. H. Anderson of the Society and informal discussions continued over refreshments. KELLIE O’NEILL, Recording Secretary ANNOUNCEMENT Back VOLUMES AND SINGLE NumBrErs IMGIseN- DO! periivolmme a Melb ne Leh 88.00 AGEs TUT gece re NES ON OP BO Wale.) e0-o0, per VOluiie: vera MN eit eu a sO DOTAPILUTIN OT | eee SNE ANNE PLN Mh UNE 00 IVGIS HI E-5,n Or) VOlME yuu ict) Te ety aia AO Lohse sss hid 9) ALUN AL NU SME aa a CR Note: No.’s 1-4 of Vol. 9 and No.’s 1-4 of Vol. 19 are available only as complete volumes. Per volume... 2.00 COMPLETE SETS, VOLS. 1-54 (1884-1952, inclusive). _ $178.00 MEMOIRS OF THE ENTOMOLOGICAL SOCIETY OF WASHINGTON No. 1. “The North American Bees of the Genus Osmia,” by Grace Sandhouse. $3.00. Members’ price $2.50. No. 2. “A Classification of Larvae and Adults of the Genus Phyllo- phaga,” by Adam G. Boving. $3.00. Members’ price $2.40. No. 3. “The Nearctic Leafhoppers, a Generic Classification and Check List,” by Paul Wilson Oman. $7.00. Members’ price $6.00. No. 4. “A Manual of the Chiggers,” by G. W. Wharton and H. 8, Fuller. $6.00. Members’ price $5.00. NOTICE Memoir 4 of the Society has been printed on two kinds of paper— a relatively small number of copies on thin paper, and a much larger number of copies on eggshell book paper. All copies which were mailed prior to Jan. 9, 1953 were those printed on thin paper. Any purchasers who received these thin-paper copies, but who prefer to have copies produced on book paper, may return the volumes for exehange. DISCOUNTS Except for Specials and current subscriptions, the following dis- eounts will be allowed: Dealers—10 percent on all items. Members and Subscribers—20 per- cent on all orders of $10.00 or more, except Memoirs, Current subscrip- tion to dealers $4.25. Domestic shipments prepaid, foreign shipments f.o.b. Washington. Prices quoted are U.S. currency. All orders should be placed with the Custodian, Herbert J. Conkle, U. S. Bureau of Entomology and Plant Quarantine, Washington 25, D. C. CONTENTS BARBER, HARRY G.—A SECOND REVISION OF THE GENUS PTOCHIOMERA SAY AND ITS ALLIES (HEMIPTERA, SP A'6 © 7 M1 WED Yl Soy RRS ROO LM BRR SIR MARR SNS EE DP WS BICK, GEORGE H.—THE NYMPH OF MIATHYRIA MAR- CELLA (SELYS) (ODONATA, LIBELLULIDAE) _ sa BURKS, B. D.—THE GENUS METACOLUS IN NORTH AMER- ICA (HYMENOPTERA, CHALCIDOIDEA) _.. COLE, A. C—NOTES ON THE GENUS LEPTOTHORAX IN NEW MEXICO AND A DESCRIPTION OF A NEW SPECIES (HYMENOPTERA, FORMICIDAEB) __. 5 SOR aR Sa COLEMAN, R. W.—A NEW BLACKFLY SPECIES FROM CALI- FORNTA (DIPTERA, SIMULITDAB) tee ae ene MALDONADO CAPRILES, J.—REDESCRIPTION OF THE GENUS BURTINUS STAL AND DESCRIPTION OF A NEW SPECIES FROM PUERTO RICO (HEMIPTERA, COREIDAE) PRATT, HARRY D—NOTES ON AMERICAN MANSONIA MOSQUITOES (DIPTERA, CULICIDAB) _.-._-__ SE RIHERD, PAUL T.—THE OCCURRENCE OF BLATTELLA VAGA HEBARD IN TEXAS (ORTHOPTERA, BLATTIDAE) ROSS, HERBERT H. AND CHI-LING HWANG.—SOME INTER- ESTING CHINESE SPECIES OF GLOSSOSOMA (TRICHOP- TERA RAYACOPHILIDAB) ‘vce eee SABROSKY, CURTIS W.—THE SCIENTIFIC NAME OF THE SCREW-WORM, WITH A NOTE ON PARALUCILIA FUL- VICBRURA (DIPTERA, CALLIPHORIDAE) STANNARD, LEWIS J., JR—THE GENUS HALMATHRIPS HOOD (THYSANOPTERA, THRIPIDAE) ——-_-__-__ SOCIETY MEETINGS, OCTOBER 1952 ee ke SE KARLSBADER INSECT PINS MADE IN GERMANY “ These first class hand-made pins are again available in all standard sizes and strengths, 000-7. Price $1.90 per thousand; MINUTEN PINS, price $1.20 per thousand. 10% discount allowed on orders for more than 100,000 pins. ~ Apparatus ‘‘IDEAL’? for printing of collection and locality labels: With one size of printing type__________________. $24.50 With two sizes of printing type All prices in U. S. funds; prices subject to possible 5 to 10% increase. I am able to supply all Natural History and Entomo- logical supplies and equipment. Ask for quotations! FELIX SAVAETE, Exporter; Eschwege/Werra, Germany. 19 30 27 40 39 36 1 46 HS et Baar 515, 70673 ie 1 nsects VOL. 55 APRIL 1953. No. 2 PROCEEDINGS of the ENTOMOLOGICAL SOCIETY OF WASHINGTON PUBLISHED BIMONTHLY BEGINNING WITH FEBRUARY BY THE ENTOMOLOGICAL SOCIETY OF WASHINGTON U. 8. NATIONAL MUSEUM WASHINGTON 25, D. C. Entered as second-class matter at the Post Office at Washington, D. O. THE ENTOMOLOGICAL SOCIETY OF WASHINGTON ORGANIZED MarcH 12, 1884 The regular meetings of the Society are held in the U. 8. National Museum on the first Thursday of each month, from October to June, in- elusive, at 8 P.M. Annual dues for members are $4.00, initiation fee $1.00 (U. 8. curren- cy). Members are entitled to the Proceedings, and manuscripts sub- mitted by them are given precedence over any submitted by non-members. OFFICERS FOR THE YEAR 1953 TTOROTATY Present: as eas ie ee ee AR President ee W. . ANDERSON First Vice President - he eg Se UTE, Bl AES rN eee meCcOna \Vace President kes eh ee Oe Sea mepording Secretary (2.20 i ee ek ee Oa eis Corresponding Secretary _._-__ > s—ssFsCOFsFsSCS