terrigena group overview

This group is monotypic, with the nominal Temnothorax terrigena being the only member. The range of T. terrigena small, restricted to the low elevations of the southern United States and northern Mexico (Fig. 170G). Apparently, this species is ground nesting, and the generalized habitus has led to confusion about its relationships historically, but the moderately arched mesosoma dorsum and broad postpetiole are telltale signs of its membership in the salvini clade. Temnothorax terrigena may be confused with members of the andrei and sallei clades, and other members of the salvini clade. See the ‘similar species’ section below to distinguish this species.