• Forel, 1901j: 350 (q.m.); Wheeler & Wheeler, 1960b: 12 (l.)
• Senior synonym of Pheidole morrisii vanceae: Creighton, 1950a: 183.
• Senior synonym of Pheidole morrisii impexa: Wilson, 2003a: 325.
• See also: Feener, 1987: 569

Junior synonyms

• Pheidole morrisii impexa Wheeler, 1908
• Pheidole morrisii vanceae Forel, 1901

Citations

• Creighton, W. S. 1950a. The ants of North America. Bulletin of the Museum of Comparative Zoology 104:1-585. PDF
• Feener, D. H., Jr. 1987. Response of Pheidole morrisi to two species of enemy ants, and a general model of defense behavior in Pheidole. Journal of the Kansas Entomological Society 60:569-575. PDF
• Forel, A. 1886b. Espèces nouvelles de fourmis américaines. Annales de la Société Entomologique de Belgique 30:xxxviii-xlix. PDF
• Forel, A. 1901j. Variétés myrmécologiques. Annales de la Société Entomologique de Belgique 45:334-382. PDF
• Wheeler, G. C.; Wheeler, J. 1960b. Supplementary studies on the larvae of the Myrmicinae (Hymenoptera: Formicidae). Proceedings of the Entomological Society of Washington 62:1-32. PDF
• Wilson, E. O. 2003a. Pheidole in the New World. A dominant, hyperdiverse ant genus. Cambridge, Mass.: Harvard University Press, [ix] + 794 pp.