Pachycondyla oligocenica, Dlussky & Rasnitsyn & Perfilieva, 2015

Dlussky, G. M., Rasnitsyn, A. P. & Perfilieva, K. S., 2015, The Ants (Hymenoptera: Formicidae) of Bol’shaya Svetlovodnaya (Late Eocene of Sikhote-Alin, Russian Far East), Caucasian Entomological Bulletin 11 (1), pp. 131-152 : 141

Pachycondyla oligocenica sp. n.

( Fig. 22)

Material. Holotype PIN 3429/1112, lateral imprint of male.

Description. Male. Judging by the remained parts the length of a body ca.7 mm. Head nearly as long as wide, with rounded occipital margin. Eyes large, ovate, convex. Anterior margin of clypeusconvex.Mandibleswithoutteeth,notopposable.Mesosoma 1.5times as long as high. Parapsidal furrows present. Propodeum gradually convex in side view. Petiole with high node, rounded in side view. 1st gastral segment nearly as long as 2nd. Constriction between 1st and 2nd gastral segments distinct. Forewing with closed cells1+2r, 3r, rm, and mcu. Cell3r nearly 4times as long as wide. Cell rm pentagonal, 2.5times as long as wide, and not reach level of pterostigma top. The meeting of crossvein rs-m and RS is distal to 2r-rs: section4RS distinct. Cell mcu pentagonal, longer than wide. 1M nearly 2.5times as long as1RS. 1M and crosswein cu-a meet M+Cu at one point, appearing as a single crossvein.

Measurements of holotype, mm: AL2.3; HL0.95; HW0.95; ED0.5; PtH0.65; PtL~0.5; FWL4.1.

Comparison. Only 2 fossil males of Pachycondyla are known: P. succinea and P. baltica (both from Late Eocene European ambers). Both species differs from P.oligocenica sp.n. by size (their body length 3.5–4.5mm).

Etymology. From the name of the epoch (Oligocene).