Pogonomyrmex barbatus valid Mexico. Neotropic.
Smith, F. 1858a. Catalogue of hymenopterous insects in the collection of the British Museum. Part VI. Formicidae. London: British Museum, 216 pp.   128685

Pogonomyrmex barbatus curvispinosus synonym of Pogonomyrmex rugosus U.S.A. (Arizona). Nearctic.
Cole, A. C., Jr. 1936b. Descriptions of seven new western ants. (Hymenop.: Formicidae). Entomological News 47:118-121.   123686

Pogonomyrmex barbatus fuscatus synonym of Pogonomyrmex rugosus U.S.A. (Colorado). Nearctic.
Emery, C. 1895d. Beiträge zur Kenntniss der nordamerikanischen Ameisenfauna. (Schluss). Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere 8:257-360.   124591

Pogonomyrmex barbatus marfensis synonym of Pogonomyrmex rugosus U.S.A. (Texas). Nearctic.
Wheeler, W. M. 1902a. A new agricultural ant from Texas, with remarks on the known North American species. American Naturalist 36:85-100.   129967

Pogonomyrmex barbatus nigrescens synonym of Pogonomyrmex barbatus U.S.A. (Texas, New Mexico). Nearctic.
Wheeler, W. M. 1902d. New agricultural ants from Texas. Psyche (Cambridge) 9:387-393.   129970

Pogonomyrmex barbatus rugosus obsolete combination U.S.A. (California). Nearctic.
Emery, C. 1895d. Beiträge zur Kenntniss der nordamerikanischen Ameisenfauna. (Schluss). Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere 8:257-360.   124591

Pogonomyrmex barbatus spadix synonym of Pogonomyrmex rugosus U.S.A. (New Mexico). Nearctic.
Cook, T. W. 1953. The ants of California. Palo Alto, California: Pacific Books, 462 pp.   123836