Pogonomyrmex rugosus

Distribution
This taxon was described from the United States.

Nomenclature

 * fuscatus. Pogonomyrmex barbatus var. fuscatus Emery, 1895c: 309 (w.q.) U.S.A. Subspecies of barbatus and senior synonym of curvispinosus, marfensis: Creighton, 1950a: 119. Junior synonym of barbatus: Cole, 1954b: 117; of rugosus: Cole, 1968: 70.
 *  rugosus. Pogonomyrmex barbatus subsp. rugosus Emery, 1895c: 309 (w.m.) U.S.A. Cole, 1968: 72 (q.); Taber, Cokendolpher & Francke, 1988: 51 (k.). Raised to species: Cole, 1968: 70. Senior synonym of similis: Creighton, 1950a: 120; of fuscatus (and its junior synonyms curvispinosus, marfensis), spadix: Cole, 1968: 70.
 * marfensis. Pogonomyrmex barbatus var. marfensis Wheeler, W.M. 1902a: 98 (diagnosis in key) (w.) U.S.A. Junior synonym of fuscatus: Creighton, 1950a: 119.
 * similis. Pogonomyrmex similis Olsen, 1934: 512, pl. 6, fig. 2 (w.) U.S.A. Junior synonym of rugosus: Creighton, 1950a: 120.
 * curvispinosus. Pogonomyrmex barbatus subsp. curvispinosus Cole, 1936b: 120 (w.) U.S.A. Junior synonym of fuscatus: Creighton, 1950a: 119.
 * spadix. Pogonomyrmex barbatus subsp. spadix Cook, 1953: 98, figs. (w.) U.S.A. Junior synonym of rugosus: Cole, 1968: 70.