diabolica species group
Diagnosis. The females of this species group can be separated from the other groups lacking posterolateral head tubercles by their simplified mesosoma: the scutellar scale is narrow; anterior transverse carinae and the, longitudinal mesonotal carina are absent the lateral mesonotal margins are rounded; the genal carina is present; and the femoral apices rounded.
Included taxon. Traumatomutilla diabolica (Gerstaecker, 1874) .
Distribution. Bolivia and Argentina.
Remarks. Williams et al. (2017) stated that the overall morphology of T. diabolica made it impossible to place this species in one of the more diverse large-bodied species groups such as the indica, juvenilis, and quadrinotata species groups. Discovery of males of this and other groups are necessary to understanding relationships within the genus.