bicolored

The entire body is orange to reddish brown, excpet for the gaster which is a distinctly darker brown to black. Used in Antkey to separate Tetramorium bicarinatum, some specimens of Tetramorium caldarium and some specimens of Tetramorium simillimum from all other Tetramorium.

The head and gaster are brown to black and the mesosoma and waist are usually yellowish brown, though the distinction is less conspicuous among some populations. Used in Antkey to separate Monomorium floricola from all other Monomorium.

head distinctly darker than body and appendages (Tapinoma melanocephalum)