Tetramorium bicarinatum (Nylander, 1846)

Francisco Hita Garcia, T. T. & Fisher, Brian L., 2011, 3039, Zootaxa 3039, pp. 1-72 : 17

Key to the species of the T. bicarinatum group in the Malagasy region (workers)

1. Mandibles with distinct sculpturation, usually striate; anterodorsal and posterodorsal angles of petiolar node equally developed and situated at about the same height; head, mesosoma, and waist segments yellow to orange-brown, gaster always much darker, dark brown to blackish ( Fig. 15)......................................................... T. bicarinatum

- Mandibles without any sculpturation, smooth, and shiny; anterodorsal and posterodorsal angles of petiolar node not equally developed, posterodorsal angle sharper and situated higher than the more rounded anterodorsal angle; uniformly coloured, either pale yellowish to orange-brown or very dark brown ( Figs. 16, 17)......................................... 2