Nesomyrmex stramineus

Distribution based on Regional Taxon Lists
Afrotropical Region: South Africa.

Nomenclature

 *  stramineus. Limnomyrmex stramineus Arnold, 1948: 223, fig. 10 (w.) SOUTH AFRICA. Combination in Leptothorax: Brown, 1971a: 4; in Nesomyrmex: Bolton, 2003: 272. See also: Bolton, 1982: 332; Mbanyana & Robertson, 2008: 38.

Worker
Bolton (1982) - TL 2.8, HL 0.63, HW 0.53, CI 84, SL 0.36, SI 68, PW 0.38, AL 0.68.

Mandibles very delicately shagreened, almost smooth. Median portion of clypeus with anterior margin evenly arcuate-convex, with a very narrow cuticular apron. Median clypeal carina vestigial. Frontal carinae and antennal scrobes absent, the antennal scapes short. Maximum diameter of eye 0.13, about 0.25 x HW and with 7-8 ommatidia in the longest row. Sides of head behind eyes very feebly convex, the sides narrowing in front of the eyes so that the width immediately in front of the eyes is 0.47 and across the clypeus at its widest is 0.38 (compare with HW 0.53). Occipital margin approximately straight and the occipital corners evenly rounded. Alitrunk in profile with promesonotum evenly and shallowly convex, the propodeal dorsum on the same level but shorter and more strongly convex, the two convexities separated by the conspicuously impressed metanotal groove. Propodeal spines narrow and somewhat down curved along their length, longer than their basal widths. Slope of the declivity between the spines and the rounded metapleural lobes straight. In dorsal view the alitrunk with the pronotal shoulders obtusely and bluntly angled, the promesonotum narrowing posteriorly to the metanotal groove. Behind this the propodeum broadening to the level of the spiracle then narrowing again to the bases of the spines; the latter divergent and in the holotype with the right spine slightly longer than the left. Petiole node in dorsal view with a strong lateral tubercle on each side, a pair of smaller tubercles on the posterior margin and a very feeble pair anterodorsally which are almost effaced. Post petiole with a low but broad lateral tubercle on each side. In profile the petiole peduncle short, with a small triangular anteroventral process and with a very small sub-denticulate process dorsally. The node itself higher than long, the lateral and posterior tubercles distinct. Sides of first gastral tergite in dorsal view curving evenly away from the articulation with the post petiole, without a sharp, flattened appearance. Head, alitrunk, petiole and pcstpetiole very finely and very densely superficially reticulate-punctulate, without rugulose sculpture. First gastral tergite with only the faintest vestiges of superficial sculpture basally. Dorsal surfaces of head and body with scattered very short blunt stout hairs; such hairs absent from appendages and sides of head but one or two may project from the curved part of the occipital corner on each side. Colour uniform pale yellow.