septentrionalis. Atta septentrionalis McCook, 1881a: 362 (w.) U.S.A. Wheeler, W.M. 1907c: 707 (q.m.); Wheeler, G.C. 1949: 673 (l.). Combination in Atta (Trachymyrmex): Forel, 1912e: 182; in Trachymyrmex: Gallardo, 1916b: 242. Senior synonym of virginiana: Wheeler, W.M. 1902f: 29; of vertebrata: Creighton, 1950a: 323; of obscurior, seminole: Weber, 1958b: 53. See also: Wheeler, W.M. 1911g: 246; Smith, D.R. 1979: 1411; Petralia & Vinson, 1980: 383; Rabeling, Cover, et al. 2007: 17.