Key to Tetramorium bonibony-group species

Based on Hita Garcia and Fisher (2012. The ant genus Tetramorium Mayr (Hymenoptera: Formicidae) in the Malagasy region—taxonomy of the T. bessonii, T. bonibony, T. dysalum, T. marginatum, T. tsingy, and T. weitzeckeri species groups. Zootaxa 3365: 1-123. [[Media:Hita Garcia & Fisher 2012a.pdf|PDF ]])

1

 * Mesosoma with distinct anterodorsal median protuberance on pronotum (Fig. 29) . . . . . 2


 * Mesosoma usually with well-developed anterior face of pronotum, but always without distinct anterodorsal median protuberance on pronotum (Figs. 30, 31) . . . . . 4

2
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 * Bicoloured species with brown to dark brown head and mesosoma and yellow to light brown waist segments and gaster; propodeal spines very long (PSLI 37 - 44) (Fig. 32) . . . . . Tetramorium bonibony


 * Uniformly coloured species; propodeal spines medium-sized to long (PSLI 26 - 31) (Fig. 33) . . . . . 3

3
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 * Petiolar node in profile distinctly triangular cuneiform and strongly anteroposteriorly compressed dorsally; in dorsal view highly transverse (LPeI 18 - 27; DPeI 400 - 590) (Fig. 34) . . . . . Tetramorium popell


 * Petiolar node in profile less strongly triangular, generally slightly cuneiform and only weakly anteroposteriorly compressed dorsally; in dorsal view less transverse than above (LPeI 48 - 54; DPeI 161 - 188) (Fig. 35) . . . . . Tetramorium trafo

4
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 * Antennal scape comparatively longer (SI 76 - 82); anterior mesosoma without well-developed anterior face of pronotum (Fig. 36) . . . . . Tetramorium kali


 * Antennal scape comparatively shorter (SI 65 - 73); anterior mesosoma with well-developed anterior face (Fig. 37) . . . . . 5

5
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 * Bicoloured species with brown to dark brown head and mesosoma and yellowish to brownish waist segments and gaster (Fig. 38) . . . . . Tetramorium sada


 * Uniformly coloured species (Figs. 39, 40) . . . . . 6