Taxonomic history
Watkins, 1972 PDF: 364 (q.).Combination in Eciton (Acamatus): Emery, 1894d PDF: 182 (in text).Combination in Eciton (Neivamyrmex): Smith, 1942c PDF: 560.Combination in Neivamyrmex: Borgmeier, 1953 PDF: 8.Senior synonym of Neivamyrmex californicus obscura: Borgmeier, 1955 PDF: 517.See also: Ward, 1999a PDF: 76; Snelling & Snelling, 2007 PDF: 467.