Myrmelachista zeledoni

In 1911 I found this species to be rather common in dead twigs at San Jose, Alajuela and Cartago, Costa Rica. Emery's type material came from the same region. (Wheeler 1934)

Distribution based on Regional Taxon Lists
Neotropical Region: Colombia, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, Peru, Venezuela.

Nomenclature

 *  zeledoni. Myrmelachista zeledoni Emery, 1896g: 102 (w.) COLOMBIA. Wheeler, W.M. 1934g: 203 (m.); Wheeler, G.C. & Wheeler, J. 1953c: 138 (l.); Longino, 2006a: 47 (q.). Combination in M. (Decamera): Emery, 1925b: 33; in M. (Hincksidris): Kempf, 1972a: 150. Senior synonym of thiemei: Longino, 2006a: 47.
 * thiemei. Myrmelachista zeledoni var. thiemei Emery, 1906c: 185 (footnote) (w.) VENEZUELA. Junior synonym of zeledoni: Longino, 2006a: 47.

Male
Wheeler (1934) - Length 2.4 mm.

Head without the mandibles decidedly broader than long, broad and semicircularly rounded behind, with large eyes and prominent ocelli, much narrowed in front, with straight, anteriorly converging cheeks. Mandibles well developed, with two large teeth. Clypeus very convex but not carinate in the middle, its anterior border broadly rounded and projecting. Antennae 11-jointed, long; scapes reaching to the posterior ocelli; first funicular joint small, as broad as long; remaining joints decidedly longer than broad. Thorax robust, broader than the head; mesonotum broader than long, convex and hemispherically rounded anteriorly; epinotum small, scarcely convex, sloping, without differentiated base and declivity. Petiole small, nodiform, conical in profile, with blunt, entire, convex and rounded superior border. Gaster rather large, with large, exserted genitalia. Legs long and slender. Wings long, with a single elongate cubital and no discoidal cell.

Smooth and shining; pilosity consisting of a few short, erect hairs on the clypeus, thorax and gaster; pubescence undeveloped. Brown; head, mesopleurre and outer genital valves darker, castaneous; mandibles, clypeus, antennre and legs brownish yellow; sagittae whitish; wings grayish, with pale brown veins and pterostigma.