Key to Tetramorium bessonii-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 ]])

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 * Petiolar node strongly anteroposteriorly compressed, in profile squamiform, anterodorsal margin situated higher than posterodorsal, dorsum tapering backwards posteriorly and comparatively weakly developed, node in dorsal view strongly transverse (LPeI 26 - 39; DPeI 209 - 333) (Fig. 1) . . . . . 2


 * Petiolar node not strongly anteroposteriorly compressed, in profile high nodiform with well-developed dorsum and approximately parallel anterior and posterior faces, node in dorsal view wider than long but less transverse than above (LPeI 51 - 63; DPeI 133 - 165) (Fig. 2) . . . . . 4