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]].

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Nesomyrmex

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 * 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

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return to couplet #1
 * Clypeus with median longitudinal carina (Fig. 3A); third mandibular tooth relatively larger and better developed (Fig. 3A) . . . . . Nesomyrmex angulatus
 * Clypeus without median longitudinal carina (Fig. 3A); third mandibular tooth relatively smaller and reduced (Fig. 3B) . . . . . Nesomyrmex zaheri