• Subspecies of Formicoxenus hirticornis: Wheeler, 1917a: 515; Emery, 1924f: 262; Cole, 1936a: 36; Wheeler & Wheeler, 1944: 248.
• Junior synonym of Formicoxenus hirticornis: Smith, 1939c: 177; Creighton, 1950a: 278; Smith, 1979: 1397; Francoeur et al., 1985: 382; Bolton, 1995b: 207.

Obsolete combinations

• Leptothorax hirticornis formidolosus

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. 1936a. An annotated list of the ants of Idaho (Hymenoptera: Formicidae). Canadian Entomologist 68:34-39. PDF
• Creighton, W. S. 1950a. The ants of North America. Bulletin of the Museum of Comparative Zoology 104:1-585. PDF
• Emery, C. 1924f ("1922"). Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [concl.]. Genera Insectorum 174C:207-397. PDF
• Francoeur, A.; Loiselle, R.; Buschinger, A. 1985. Biosystématique de la tribu Leptothoracini (Formicidae, Hymenoptera). 1. Le genre Formicoxenus dans la région holarctique. Naturaliste Canadien (Québec) 112:343-403. 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. 1939c. Notes on Leptothorax (Mychothorax) hirticornis Emery, and description of a related new species (Formicidae). Proceedings of the Entomological Society of Washington 41:176-180. PDF
• Wheeler, G. C.; Wheeler, E. W. 1944. The ants of North Dakota. North Dakota Historical Quarterly 11:231-271. PDF
• Wheeler, W. M. 1915b. Some additions to the North American ant-fauna. Bulletin of the American Museum of Natural History 34:389-421. PDF
• Wheeler, W. M. 1917a. The mountain ants of western North America. Proceedings of the American Academy of Arts and Sciences 52:457-569. PDF