• Combination in Pogonomyrmex: Mayr, 1886c: 365.
• Status as species: Mayr, 1886c: 365.
• Junior synonym of Pogonomyrmex occidentalis: Mayr, 1886d: 449; Forel, 1886b: xlii; Dalla Torre, 1893: 119; Emery, 1921c: 46; Creighton, 1950a: 128; Smith, 1951c: 793; Cole, 1968: 94; Smith, 1979: 1355; Bolton, 1995b: 341.

Obsolete combinations

• Myrmica seminigra

Citations

• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Cole, A. C., Jr. 1968. Pogonomyrmex harvester ants. A study of the genus in North America. Knoxville, Tenn.: University of Tennessee Press, x + 222 pp.
• Creighton, W. S. 1950a. The ants of North America. Bulletin of the Museum of Comparative Zoology 104:1-585. PDF
• Cresson, E. T. Sr. 1865b. Catalogue of Hymenoptera in the collection of the Entomological Society of Philadelphia, from Colorado Territory. [concl.]. Proceedings of the Entomological Society of Philadelphia 4:426-488. PDF
• Dalla Torre, K. W. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. PDF
• Emery, C. 1921c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174A:1-94 + 7 plates. PDF
• Forel, A. 1886b. Espèces nouvelles de fourmis américaines. Annales de la Société Entomologique de Belgique 30:xxxviii-xlix. PDF
• Mayr, G. 1886c. Notizen über die Formiciden-Sammlung des British Museum in London. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 36:353-368. PDF
• Mayr, G. 1886d. Die Formiciden der Vereinigten Staaten von Nordamerika. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 36:419-464. PDF
• Smith, D. R. 1979. Superfamily Formicoidea. Pp. 1323-1467 in: Krombein, K. V.; Hurd, P. D.; Smith, D. R.; Burks, B. D. (eds.) 1979. Catalog of Hymenoptera in America north of Mexico. Volume 2. Apocrita (Aculeata). Washington, D.C.: Smithsonian Institution Press, pp. i-xvi, 1199-2209.
• Smith, M. R. 1951c. Family Formicidae. Pp. 778-875 in: Muesebeck, C. F. W.; Krombein, K. V.; Townes, H. K. (eds.) 1951. Hymenoptera of America north of Mexico. Synoptic catalogue. United States Department of Agriculture. Agriculture Monograph 2:1-1420. PDF