Biamomyrma lata

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: 144

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Biamomyrma lata

sp. n.

Biamomyrma lata  sp. n.

( Fig. 28)

Material. Holotype PIN 3429/1149 (print and counterprint), gyne.

Description. Gyne. Body length ca.6 mm. Head nearly as long as wide, with weakly convex sides, rounded occipital corners, and weakly concave occipital margin. Anterior margin of clypeus with rounded lobe. Eyes comparatively small, oval, situated backward midlength of head. Scape short, nearly half as long as head.Funiculus with distinctive 3-segmented clava; basal funicular segments wider than long. Mesosoma very broad. Scutum transverse, 0.7times as long as wide. Scutellum a little wider than long. Propodeum without teeth or spines. Postpetiole very large. Gaster oval. Occipital corners, sides of pronotum and petiole with coarse cellular sculpture, head, most part of mesosoma and postpetiole very coarsely longitudinally and reticulately rugose  . 1st gastric segment sharply longitudinally striated.

Measurements of holotype, mm: AL 2; HL 1.4; HW 1.4; SL0.76; SctL0.9; SctW1.3; SctlL0.5; SctlW0.6; PptH1.

Comparison. Differs from other species in very broad mesosoma and transverse scutum.

Etymology. Lata  is the Latin for broad.