• [First available use of Brachymyrmex patagonicus cordemoyi nigricans Santschi, 1912e; unavailable (infrasubspecific) name.]
• As unavailable (infrasubspecific) name: Bruch, 1915: 535.
• Status as species: Santschi, 1923b: 657; Emery, 1925d: 43; Santschi, 1931f: 281; Kempf, 1972b: 40.
• Junior synonym of Brachymyrmex brevicornoeides: Santschi, 1923b: 657; Kempf, 1972b: 40; Bolton, 1995b: 82.
• [Note: Santschi, and Kempf, give Brachymyrmex nigricans as senior synonym, but Brachymyrmex brevicornoeides has priority (Bolton, 1995b: 81).]
• Junior synonym of Brachymyrmex cordemoyi: Ortiz-Sepúlveda et al., 2019: 484.

Obsolete combinations

• Brachymyrmex cordemoyi nigricans

Citations

• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Bruch, C. 1915. Suplemento al catálogo de los formícidos argentinos. I. (Addenda et corrigenda). Revista del Museo de La Plata 19:527-537. PDF
• Emery, C. 1925d. Hymenoptera. Fam. Formicidae. Subfam. Formicinae. Genera Insectorum 183:1-302. PDF
• Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Studia Entomologica 15:3-344. PDF
• Ortiz-Sepúlveda, C. M.; Van Bocxlaer, B.; Meneses, A. D.; Fernández, F. 2019. Molecular and morphological recognition of species boundaries in the neglected ant genus Brachymyrmex (Hymenoptera: Formicidae): Toward a taxonomic revision. Organisms Diversity & Evolution 19:447-542. 10.1007/s13127-019-00406-2 PDF
• Santschi, F. 1916e. Formicides sudaméricains nouveaux ou peu connus. Physis (Buenos Aires) 2:365-399. PDF
• Santschi, F. 1923b. Revue des fourmis du genre Brachymyrmex Mayr. Anales del Museo Nacional de Historia Natural de Buenos Aires 31:650-678. PDF
• Santschi, F. 1931f. Contribution à l'étude des fourmis de l'Argentine. Anales de la Sociedad Cientifica Argentina 112:273-282. PDF