• [Misspelled as colombica by Wheeler, 1908a: 133 (in key).]
• Status as species: Dalla Torre, 1893: 89; Forel, 1899b: 66.
• Subspecies of Pheidole fallax: Emery, 1893m: 90 (footnote); Forel, 1901j: 356; Wheeler, 1908a: 133 (in key); Forel, 1912g: 221; Emery, 1922c: 101; Kempf, 1972b: 191; Bolton, 1995b: 319.
• Junior synonym of Pheidole fallax: Wilson, 2003a: 290.

Obsolete combinations

• Pheidole fallax columbica

Citations

• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Dalla Torre, K. W. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. PDF
• Emery, C. 1893m. [Untitled. Taxonomic changes in various genera attributed to Emery.]. Pp. 4-266 in: Dalla Torre, K. W. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. PDF
• Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B:95-206. PDF
• Forel, A. 1886b. Espèces nouvelles de fourmis américaines. Annales de la Société Entomologique de Belgique 30:xxxviii-xlix. PDF
• Forel, A. 1899b. Formicidae. [part]. Biologia Centrali-Americana Hym. 3:1-24. PDF
• Forel, A. 1901j. Variétés myrmécologiques. Annales de la Société Entomologique de Belgique 45:334-382. PDF
• Forel, A. 1912g. Formicides néotropiques. Part III. 3me sous-famille Myrmicinae (suite). Genres Cremastogaster et Pheidole. Mémoires de la Société Entomologique de Belgique 19:211-237. PDF
• Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Studia Entomologica 15:3-344. PDF
• Wheeler, W. M. 1908a. The ants of Porto Rico and the Virgin Islands. Bulletin of the American Museum of Natural History 24:117-158. PDF
• Wilson, E. O. 2003a. Pheidole in the New World. A dominant, hyperdiverse ant genus. Cambridge, Mass.: Harvard University Press, [ix] + 794 pp.