Leptogenys tatsimo

Identification
Key to Malagasy Leptogenys

Distribution based on Regional Taxon Lists
Malagasy Region: Madagascar.

Nomenclature

 *  tatsimo. Leptogenys tatsimo Rakotonirina & Fisher, 2014: 101, figs. 49A, 51A, 109, 125 (w.) MADAGASCAR.

Worker
(3 specimens). HW: 1.53–1.68, HL: 1.90–2.06, CI: 81–82, SL: 2.25–2.44, SI: 144–147, PW: 1.23–1.31, WL: 3.46–3.54, PNH: 0.92–1.02, PNL: 1.01–1.07, PNW: 0.85–0.95, DNI: 84–88, LNI: 91–95.

In full-face view, head elongate and slightly increasing in width toward the front of eye; sides broadly convex. Eye somewhat protruding, position dividing lateral margin of head. Antennal scape particularly long, with more than one third of its length surpassing posterior cephalic margin. Anteromedian lobe of clypeus broadly angulate with a blunt apex, connected with generally convex lateral margin and bordered with wide, fringing, semi-translucent membrane. Mandible long and broad, strongly curved near base; gradually increasing in width, apical tooth obtuse; not capable of closing tightly against median lobe of clypeus if apices superimposed. In full-face view, hypostomal teeth not visible. With mesosoma in dorsal view, metanotal groove impressed, additional shallow and fine transverse sulcus present between metanotal groove and propodeum; in lateral view, propodeal dorsum roughly straight and elongate, joining distinctly short declivity in blunt angle. Petiolar node in profile more or less elongate, with anterior and posterior margin rounding to convex dorsal margin. Constriction between third and fourth abdominal segments strong. Mandible generally smooth apart from faint short striation and sparse punctures. Dorsum of head and mesosoma densely reticulate-rugose; propodeal declivity rugulose. Lateral portion of petiolar node reticulate-rugose, and dorsally finely microreticulate, with sparse large punctures. Body dorsum covered with standing hairs and pubescence. Color black; apex of appendages and extremity of gaster ferruginous-brown.