Leptogenys diana

Identification
Key to Malagasy Leptogenys

Distribution based on Regional Taxon Lists
Malagasy Region: Madagascar.

Nomenclature

 *  diana. Leptogenys diana Rakotonirina & Fisher, 2014: 145, figs. 12A, 162, 171 (w.) MADAGASCAR.

Worker
(5 specimens). HW: 1.66–1.77, HL: 1.81–1.89, CI: 91–43, SL: 1.79–1.85, SI: 105–109, PW: 1.13–1.20, WL: 2.89–3.15, PNH: 0.96–1.05, PNL: 0.87–0.95, PNW: 0.87–0.91, DNI: 95–100, LNI: 108–117.

Head subquadrate, not diverging anteriorly; sides nearly straight; posterior margin slightly concave. Eye large, occupying one-third to one-fourth the length of lateral cephalic margin and extending beyond line of sides of head. Antennal scape relatively short, roughly one-fifth of its length surpassing posterior cephalic margin. In profile, mandible strongly bent downward; in full-face view blade increasing in width at distal half, then gradually, narrowly arched toward apex; small preapical tooth may be present. Anterior clypeal margin meets lateral portions in rounded angle, anterior lamella limited to anteromedian portion, not broadly covering the clypeus; medial longitudinal carina absent. Antennal scape relatively short, roughly one-fifth of apical portion surpassing posterior cephalic margin. With mesosoma in dorsal view, metanotal groove cross-ribbed; in lateral view, posterolateral border of propodeum smooth, without toothlike lobe. Outer surface of mandible from distal half to apex densely and finely striate, softcuticleand golden in color. Dorsum of head, mesosoma and petiolar node densely reticulate-punctulate. Third abdominal tergite generally microreticulate or coriaceous, with scattered punctures. Dorsum of mesosoma, petiolar node, and gaster covered with erect hairs; pubescence absent. Color black, with brown to light brown apical portion of appendages and tip of gaster.