Key to Arabian Nesomyrmex

This worker key is based on: [[Media:Sharaf, M.R., Akbar, S.A. et al. 2017. Review of the ant genus Nesomyrmex from the Arabian Peninsula.pdf|Sharaf, M.R., Akbar, S.A., Aldawood, A.S., Hita Garcia, F. 2017. Review of the ant genus Nesomyrmex Wheeler, 1910 (Hymenoptera, Formicidae, Myrmicinae) from the Arabian Peninsula. African Invertebrates 58: 21–37 (DIO 10.3897/AfrInvertebr.58.12782).]] and [[Media:Sharaf, M.R., Mohamed, A.A. et al. 2020. Nesomyrmex micheleae, a new ant species (10.1080@00222933.2020.1762013).pdf|Sharaf, M.R., Mohamed, A.A., Al Dhafer, H.M., Aldawood, A.S. 2020. Nesomyrmex micheleae, a new ant species (Hymenoptera: Formicidae) from the Dhofar Governorate, Oman, with a synoptic list, distribution map and key to the Arabian Nesomyrmex. Journal of Natural History 54(5-6), 351-365]].

You may also be interested in

Nesomyrmex

1

 * Anterior clypeal lobe short, flat-margined and never convex, lobe with a small median triangular projection (Figure 2A); dorsal pronotum, seen from above, anterolaterally sharply marginate, with dentate corners (Figure 2B); in profile mesosomal outline strongly concave (Figure 2C); propodeal spines exceptionally long, about 3X longer than its base and blunt apically (Figure 2c); petiole barrel-shaped with weakly developed, short and triangular petiolar node (Figure 2C) . . . . . ''Nesomyrmex humerosus’’


 * Anterior clypeal lobe always conspicuously developed, convex and rounded, never with a small median triangular projection (Figure 1C); dorsal pronotum, seen from above, anterolaterally weakly marginate without dentate corners (Figure 2E); in profile mesosomal outline flat and uninterrupted (Figure 2F); propodeal spines distinctly shorter, about as long as its base and acute apically (Figure 2F); petiole with well-developed petiolar node (Figure 2F) . . . . . 2

2
return to couplet #1
 * Clypeus without median longitudinal carina; scapes when laid back from their insertions surpass posterior margin of eyes by about the length of the first funicular segment . . . . . Nesomyrmex zaheri


 * Clypeus with a median longitudinal carina (Figure 3B); scapes distinctly longer, when laid back from their insertions either reach posterior margin of head or surpass posterior margin of eyes by about one-third the length of the scape (Figure 3B) . . . . . 3

3
return to couplet #2
 * Head in full-face view with scapes when laid back from insertions reach posterior margin of head; mesosoma with fewer pairs of longer hairs (about 10); uniform yellow . . . . . Nesomyrmex angulatus


 * Head in full-face view with scapes when laid back from insertions fail to reach posterior margin of head; bicoloured species, head black-brown to black, mesosoma, petiole and postpetiole dark brown, gaster golden yellow conspicuously contrasting with rest of body . . . . . Nesomyrmex micheleae