Insecta, ex Sibiria meridionali et Mongolia, in itinere Orjan Olsen 1914 collecta. C. Hymenoptera. 1. Formicidae. D. Hemiptera. 1. Homoptera cicadina.

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Insecta,

ex Sibiria meridional! et Mongolia,
in itinere 0rjan Olsen 191k collecta.

C. Hymenoptera. D. Hemiptera,

1. Formioidae. 1. Homoptera cicadina.
By Holger Holgersen, Sandnes.

During the 0rjan Olsen Expedition to Siberia and Mongolia
1914, Mr. Fritz Jensen, the collector of insects, had his attention
concentrated especially upon the Ooleoptera, and only occasionally
secured a few specimens belonging to other orders, so e. g. ants
and cicadae. These have been stored among the numerous
Coleoptera from the expedition until recently, when I had the
occasion to take them out for determination.

Below I give a list of the species captured, regretting that,
apart from the locality name, no further details referring to the
finds are available.

C. Hymenoptera,
I. Formicidae.

Myrmica laevinodis Nyl. Sajan, Sistikem, Mongolia, 1 $.

Distribution: Europe, Siberia, Mandschukuo, and Japan.

Tetramorium caespitumL. Abakan-steppe, Siberia, 3 dealated $ $ .
The mesonotum has longitudinal stripes along its sides,

the central part being smooth and shining. This rugosity is

more strongly developed than in specimens from Norway and

Czecho-Slovakia (in my collection), which have the mesonotum

smooth nearly all over.

Distribution: North Africa, Europe, Central Asia, Japan.

Camponotus ligniperdus Latr. Sajan, Sistikem, Mongolia, 1
dealated $ .
The gaster is not so shining as in my Norwegian and

Central European specimens. The pubescence is distinct, but is

very slightly developed.

Distribution: Europe and Siberia.

Camponotus japonicus Mayr var. aterrima Emery. Abakan-
steppe, Siberia, 2 $ $ and 1 dealated $ ; Sistikem, Mon-
golia, 1 dealated ? .

Insecta 163

The close pubescence of the gaster of the workers is some-
what shorter than in a specimen from Krasnoyarsk (in my

collection).

The difference in the microsculpture of this form and of

the closely allied species ligniperdus Latr. and herculeanus L.

is rather striking. Not only are head, thorax, and gaster

distinctly more strongly sculptured in this, but the sculpture

consists of a net of hexagonal cells, not of irregular lines as

in the two other species.

Distribution: Eastern Siberia and China (EMERY 1908).

Lasius niger L. Abakan-steppe, Siberia, 1 $; Sistikem, Mon-
golia, 1 $.
Widely distributed: North Africa, Europe, Siberia, Turkestan,

China, and Japan.

Lasius flavus F. Cha-Kul, Mongolia, 1 dealated $ .

There seems to be no doubt about the identity of this
single specimen, yet a cover of oil or grease makes the determin-
ation a little difficult. I have tried to remove it in alcohol
but without success.

Distribution: Mediterranean, Europe, Siberia.

D, Hemiptera.
I. Homoptera Cicadina.

Lepyronia coleoptrata L. Abakan-steppe, Siberia, 2 dV, 3 $ $ .

H. LINDBERG (1923) gives size of Siberian specimens as
upwards to 8 mm. The Abakan-specimens measure 5 l hl l k.
In Norway I have found the size varying between 6 and 8 mm,
the males always being smaller than the females.
Aphrodes tricinctus Curt. Abakan-steppe, Siberia, 1 cT ; (Sajan,

Sistikem, Mongolia, 1 $ ).

The male could be reliably identified by means of its
characteristic genitalia (det. Frej Ossiannilsson, Stockholm). The
female may possibly belong to this species.

Distribution: Oshanin (Katalog der pal. Hem.) gives only
Central and Southern Europe, Algeria, and Caucasia.