• [Misspelled as angustior by Emery, 1910b: 25, and others.]
• Combination in Eciton (Acamatus): Emery, 1910b: 25.
• Combination in Neivamyrmex: Borgmeier, 1953: 8.
• Subspecies of Neivamyrmex pilosus: Emery, 1910b: 25.
• Junior synonym of Neivamyrmex pilosus: Borgmeier, 1955: 361; Kempf, 1972b: 158; Bolton, 1995b: 287; Snelling & Snelling, 2007: 489.

Obsolete combinations

• Eciton pilosa angustius

Citations

• Baroni Urbani, C. 1977e. Katalog der Typen von Formicidae (Hymenoptera) der Sammlung des Naturhistorischen Museums Basel (2. Teil). Mitteilungen der Entomologischen Gesellschaft Basel (n.s.)27:61-102. PDF
• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Borgmeier, T. 1953. Vorarbeiten zu einer Revision der neotropischen Wanderameisen. Studia Entomologica 2:1-51. PDF
• Borgmeier, T. 1955. Die Wanderameisen der neotropischen Region. Studia Entomologica 3:1-720. PDF
• Emery, C. 1910b. Hymenoptera. Fam. Formicidae. Subfam. Dorylinae. Genera Insectorum 102:1-34. PDF
• Forel, A. 1909a. Ameisen aus Guatemala usw., Paraguay und Argentinien (Hym.). Deutsche Entomologische Zeitschrift 1909:239-269. PDF
• Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Studia Entomologica 15:3-344. PDF
• Snelling, G. C.; Snelling, R. R. 2007. New synonymy, new species, new keys to Neivamyrmex army ants of the United States. Pp. 459-550 in: Snelling, R. R.; Fisher, B. L.; Ward, P. S. (eds.) 2007. Advances in ant systematics (Hymenoptera: Formicidae): homage to E.O. Wilson – 50 years of contributions. Memoirs of the American Entomological Institute 80:690 pp. PDF