• Cole, 1968: 94 (m.); Wheeler & Wheeler, 1953a: 110 (l.); Taber et al., 1988: 51 (k.); Taber & Francke, 1986: 274 (gynandromorph)
• Combination in Pogonomyrmex: Cresson, 1887: 22
• Status as species: Mayr, 1886d: 449; Forel, 1886b: xlii; Mayr, 1887: 610 (in key); Cresson, 1887: 260; Dalla Torre, 1893: 119; Emery, 1895d: 310; Forel, 1899a: 119; Wheeler, 1902a: 98 (in key); Wheeler, 1902d: 391 (in key); Wheeler, 1906i: 340; Wheeler, 1910a: 565; Emery, 1921c: 46; Essig, 1926: 862; Olsen, 1934: 507; Cole, 1936a: 36; Cole, 1937b: 135; Cole, 1942: 365; Wheeler & Wheeler, 1944: 238; Buren, 1944a: 283; Creighton, 1950a: 127; Smith, 1951c: 793; Cole, 1954b: 120; Smith, 1958c: 115; Cole, 1966b: 4 (in key); Beck et al., 1967: 72; Smith, 1967a: 351; Cole, 1968: 94 (redescription); Hunt & Snelling, 1975: 21; Yensen et al., 1977: 182; Smith, 1979: 1355; Allred, 1982: 496; MacKay et al., 1985: 50; Wheeler & Wheeler, 1986g: 28; Taber & Francke, 1986: 274; Shattuck, 1987: 172; MacKay et al., 1988: 100; Bolton, 1995b: 341; Taber, 1998: 149 (in key); Mackay & Mackay, 2002: 216; Ward, 2005: 67.
• Senior synonym of Pogonomyrmex opaciceps: 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.
• Senior synonym of Pogonomyrmex occidentalis ruthveni: Olsen, 1934: 507 (in text); Creighton, 1950a: 128; Smith, 1951c: 793; Cole, 1968: 94; Smith, 1979: 1355; Bolton, 1995b: 341.
• Senior synonym of Pogonomyrmex seminigra: 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.
• Senior synonym of Pogonomyrmex occidentalis utahensis: Cole, 1968: 95; Smith, 1979: 1355; Bolton, 1995b: 341.

Junior synonyms

• Pogonomyrmex occidentalis ruthveni Gaige, 1914
• Pogonomyrmex occidentalis utahensis Olsen, 1934
• Pogonomyrmex opaciceps Mayr, 1870
• Pogonomyrmex seminigra (Cresson, 1865)
  Obsolete combination(s): Myrmica seminigra

Obsolete combinations

• Myrmica occidentalis

Citations

• Allred, D. M. 1982. Ants of Utah. Great Basin Naturalist 42:415-511.
• Beck, D. E.; Allred, D. M.; Despain, W. J. 1967. Predaceous-scavenger ants in Utah. Great Basin Naturalist 27:67-78.
• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Buren, W. F. 1944a. A list of Iowa ants. Iowa State College Journal of Science 18:277-312. PDF
• Cole, A. C., Jr. 1936a. An annotated list of the ants of Idaho (Hymenoptera: Formicidae). Canadian Entomologist 68:34-39. PDF
• Cole, A. C., Jr. 1937b. An annotated list of the ants of Arizona (Hym.: Formicidae). [concl.]. Entomological News 48:134-140. PDF
• Cole, A. C., Jr. 1942. The ants of Utah. American Midland Naturalist 28:358-388. PDF
• Cole, A. C., Jr. 1954b. Studies of New Mexico ants. VII. The genus Pogonomyrmex with synonymy and a description of a new species (Hymenoptera: Formicidae). Journal of the Tennessee Academy of Science 29:115-121. PDF
• Cole, A. C., Jr. 1966b. Ants of the Nevada Test Site. Brigham Young University Science Bulletin. Biological Series 7(3):1-27. PDF
• 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
• Cresson, E. T. Sr. 1887. Synopsis of the families and genera of the Hymenoptera of America, north of Mexico, together with a catalogue of the described species, and bibliography. Transactions of the American Entomological Society, Suppl. Vol. 1887:1-351. 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. 1895d. Beiträge zur Kenntniss der nordamerikanischen Ameisenfauna. (Schluss). Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere 8:257-360. PDF
• Emery, C. 1921c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174A:1-94 + 7 plates. PDF
• Essig, E. O. 1926. Insects of western North America. New York: Macmillan, xi + 1035 pp. PDF
• Forel, A. 1886b. Espèces nouvelles de fourmis américaines. Annales de la Société Entomologique de Belgique 30:xxxviii-xlix. PDF
• Forel, A. 1899a. Heterogyna (Formicidae). Fauna Hawaiiensis 1:116-122. PDF
• Hunt, J. H.; Snelling, R. R. 1975. A checklist of the ants of Arizona. Journal of the Arizona Academy of Science 10:20-23. PDF
• MacKay, W. P.; Lowrie, D.; Fisher, A.; MacKay, E. E.; Barnes, F. 1988. The ants of Los Alamos County, New Mexico (Hymenoptera: Formicidae). Pp. 79-131 in: Trager, J. C. (ed.) 1988. Advances in myrmecology. Leiden: E. J. Brill, xxvii + 551 pp. PDF
• MacKay, W. P.; MacKay, E. E.; Perez Dominguez, J. F.; Valdez Sanchez, L. I.; Orozco, P. V. 1985. Las hormigas del estado de Chihuahua Mexico: el genero Pogonomyrmex (Hymenoptera: Formicidae). Sociobiology 11:39-54. PDF
• Mackay, W.; Mackay, E. 2002. The ants of New Mexico (Hymenoptera: Formicidae). Lewiston, New York: Edwin Mellen Press, 400 pp. PDF
• Mayr, G. 1886d. Die Formiciden der Vereinigten Staaten von Nordamerika. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 36:419-464. PDF
• Mayr, G. 1887. Südamerikanische Formiciden. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 37:511-632. PDF
• Olsen, O. W. 1934. Notes on the North American harvesting ants of the genus Pogonomyrmex Mayr. Bulletin of the Museum of Comparative Zoology 77:493-514. PDF
• Shattuck, S. O. 1987. An analysis of geographic variation in the Pogonomyrmex occidentalis complex (Hymenoptera: Formicidae). Psyche (Cambridge) 94:159-179. 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
• Smith, M. R. 1958c. Family Formicidae. Pp. 108-162 in: Krombein, K. V. (ed.) 1958. Hymenoptera of America north of Mexico. Synoptic catalogue. First supplement. United States Department of Agriculture. Agriculture Monograph 2(suppl. 1):1-305. PDF
• Smith, M. R. 1967a. Family Formicidae. Pp. 343-374 in: Krombein, K. V.; Burks, B. D. (eds.) 1967. Hymenoptera of America north of Mexico. Synoptic catalog. Second supplement. United States Department of Agriculture. Agriculture Monograph 2(suppl. 2):1-584. PDF
• Taber, S. W. 1998. The world of harvester ants. College Station, Texas: Texas A&M University Press, xvii + 213 pp. PDF
• Taber, S. W.; Cokendolpher, J. C.; Francke, O. F. 1988. Karyological study of North American Pogonomyrmex (Hymenoptera: Formicidae). Insectes Sociaux 35:47-60. PDF
• Taber, S. W.; Francke, O. F. 1986. A bilateral gynandromorph of the western harvester ant, Pogonomyrmex occidentalis (Hymenoptera: Formicidae). The Southwestern Naturalist 31:274-276. PDF
• Ward, P. S. 2005. A synoptic review of the ants of California (Hymenoptera: Formicidae). Zootaxa 936:1-68. PDF
• Wheeler, G. C.; Wheeler, E. W. 1944. The ants of North Dakota. North Dakota Historical Quarterly 11:231-271. PDF
• Wheeler, G. C.; Wheeler, J. 1953a ("1952"). The ant larvae of the myrmicine tribe Myrmicini. Psyche (Cambridge) 59:105-125. PDF
• Wheeler, G. C.; Wheeler, J. 1986g. The ants of Nevada. Los Angeles: Natural History Museum of Los Angeles County, vii + 138 pp. PDF
• Wheeler, W. M. 1902a. A new agricultural ant from Texas, with remarks on the known North American species. American Naturalist 36:85-100. PDF
• Wheeler, W. M. 1902d. New agricultural ants from Texas. Psyche (Cambridge) 9:387-393. PDF
• Wheeler, W. M. 1906i. The ants of the Grand Cañon. Bulletin of the American Museum of Natural History 22:329-345. PDF
• Wheeler, W. M. 1910a. Ants: their structure, development and behavior. New York: Columbia University Press, xxv + 663 pp. PDF
• Yensen, N. P.; Clark, W. H.; Francoeur, A. 1977. A checklist of Idaho ants (Hymenoptera: Formicidae). Pan-Pacific Entomologist 53:181-187. PDF