Solenopsis pylades richteri Forel, 1909:267, Trager, 1991Trager, J.C. 1991. A revision of the fire ants, Solenopsis geminata group (Hymenoptera: Formicidae: Myrmicinae). Journal of the New York Entomological Society 99 (2):141-198.:187, Syntype xw, ♀, ♂, examined (MHNG). - As Solenopsis richteri: - Trager, 1991Trager, J.C. 1991. A revision of the fire ants, Solenopsis geminata group (Hymenoptera: Formicidae: Myrmicinae). Journal of the New York Entomological Society 99 (2):141-198. (distribution); AntWeb, 2023AntWeb 2023. Ants. . (distribution).
Solenopsis pylades tricuspis Forel, 1912:397, Trager, 1991Trager, J.C. 1991. A revision of the fire ants, Solenopsis geminata group (Hymenoptera: Formicidae: Myrmicinae). Journal of the New York Entomological Society 99 (2):141-198.:187, Syntype xw, examined (MHNG). - Trager, 1991Trager, J.C. 1991. A revision of the fire ants, Solenopsis geminata group (Hymenoptera: Formicidae: Myrmicinae). Journal of the New York Entomological Society 99 (2):141-198.:187 ( listed as synonym of Solenopsis richteri Forel, 1909).
Solenopsis saevissima oblongiceps Santschi, 1936:405, Trager, 1991Trager, J.C. 1991. A revision of the fire ants, Solenopsis geminata group (Hymenoptera: Formicidae: Myrmicinae). Journal of the New York Entomological Society 99 (2):141-198.:187, Syntype xw, examined (NMB). Synonymized with Solenopsis richteri Forel, 1909 by Trager, 1991Trager, J.C. 1991. A revision of the fire ants, Solenopsis geminata group (Hymenoptera: Formicidae: Myrmicinae). Journal of the New York Entomological Society 99 (2):141-198.:187.