Revision of the Traumatomutilla quadrinotata species-group (Hymenoptera: Mutillidae, Sphaeropthalminae): new synonyms, sex associations, and a new species from the Brazilian Atlantic Forest

The Traumatomutilla quadrinotata species-group is reviewed, leaving it with six species known from both sexes, four known from females only and two known from males only. The following junior synonyms are proposed: Traumatomutilla austera (Gerstaecker, 1874) [= Mutilla sigillata Gerstaecker, 1874 syn. nov.]; T. chrysozona (Gerstaecker, 1874) [= Mutilla lugubrina Dalla Torre, 1897 syn. nov.; = Ephuta dives André, 1906 syn. nov.]; T. quadripustulata (Klug, 1821) [= M. pruinosa Smith, 1855 syn. nov.; = M. maraca Cresson, 1902 syn. nov.]; T. sancta (Gerstaecker, 1874) [= M. solemnis Cresson, 1902 syn. nov.]; T. incerta (Spinola, 1841) [= M. dentata Smith, 1879 syn. nov.; =M. sodalicia Kohl, 1882 syn. nov.; = T. tabatinga Casal, 1969 syn. nov.; = T. dignitosa Mickel, 1952 syn. nov.]; T. pompiliformis (Gerstaekcer, 1874) [= M. serra Cresson, 1902 syn. nov.]; T. infernalis (Gerstaecker, 1874) [= M. floccosa Gerstaecker, 1874 syn. nov.]. The hitherto undescribed males of T. ameliae Casal, 1969 and T. quadrinotata (Klug, 1821), are fully described and illustrated. A new species, T. tetratrauma Bartholomay & Williams sp. nov., is described based on couples from the Brazilian Atlantic Forest. All previously described species are redescribed and illustrated. Identification keys for males, females, and known color forms are also provided.