Key to Odontomachus males of Sumatra

This key to males is based on: [[Media:Satria, R., Kurushima, H. et al. 2015. The trap-jaw ant genus Odontomachus from Sumatra.pdf|Satria, R., Kurushima, H., Herwina, H., Yamane, S. and Eguchi, K. 2015. The trap-jaw ant genus Odontomachus Latreille from Sumatra, with a new species description. Zootaxa. 4048:1-36.]]

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Odontomachus

1

 * Palp formula 6, 3; propodeum in lateral view with dorsal outline angulate (arrow in Fig. 4D); body almost entirely blackish brown, and frons, clypeus, antenna and mandible yellowish brown to yellow (Fig. 4) . . . . . Odontomachus simillimus


 * Palp formula 6, 4; propodeum in lateral view with dorsal outline roundly convex (arrow in Fig. 7D); body yellow, blackish yellow, or yellowish brown . . . . . 2

2
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 * Subpetiolar process in lateral view triangular (Fig. 10E); gaster much darker than head and mesosoma (Fig. 10). . . . . . Odontomachus procerus


 * Subpetiolar process in lateral view lobate (Fig. 7E); whole body more-or-less unicolor . . . . . 3

3
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 * Apex of petiolar node in lateral view evently rounded (Fig. 7E); posterior spine of 8th abdominal tergum short and thick, very weakly curved (Figs. 7G) . . . . . Odontomachus latidens


 * Apex of petiolar node in lateral view bluntly pointed (Figs. 13E, 16E); posterior spine of 8th abdominal tergum in lateral view long and slender, weakly or very weakly curved (Figs. 13G, 16G) . . . . . 4

4
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 * Body small (HL 1.04–1.14 mm; WL 2.63–2.93 mm); first gastral tergum in lateral view as long as high; whole body yellowish brown to brown, unicolor . . . . . Odontomachus rixosus


 * Body large (HL 1.21–1.24 mm; WL 3.28–3.40 mm); first gastral tergum in lateral view longer than high; body basically pale yellow, but with blackish area in head and mesosoma . . . . . Odontomachus minangkabau