• Combination in Pseudomyrmex: Kempf, 1961a: 400
• Subspecies of Pseudomyrmex caroli: Forel, 1906d: 231; Emery, 1921c: 31; Borgmeier, 1927c: 70; Wheeler, 1942: 164; Kempf, 1972b: 217.
• Junior synonym of Pseudomyrmex viduus: Ward, 1989a: 445; Brandão, 1991: 377; Bolton, 1995b: 375; Ward, 1999b: 510.

Obsolete combinations

• Pseudomyrma caroli sapii

Citations

• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Borgmeier, T. 1927c. Catalogo systematico e synonymico das formigas do Brasil. 2 parte. Subf. Pseudomyrminae, Myrmicinae, Formicidae. Archivos do Museu Nacional (Rio de Janeiro) 29:69-164. PDF
• Brandão, C. R. F. 1991. Adendos ao catálogo abreviado das formigas da região Neotropical (Hymenoptera: Formicidae). Revista Brasileira de Entomologia 35:319-412. PDF
• Emery, C. 1921c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174A:1-94 + 7 plates. PDF
• Forel, A. 1904f. In und mit Pflanzen lebende Ameisen aus dem Amazonas-Gebiet und aus Peru, gesammelt von Herrn E. Ule. Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere 20:677-707. PDF
• Forel, A. 1906d. Fourmis néotropiques nouvelles ou peu connues. Annales de la Société Entomologique de Belgique 50:225-249. PDF
• Kempf, W. W. 1961a. Estudos sôbre Pseudomyrmex. III. (Hymenoptera: Formicidae). Studia Entomologica 4:369-408. PDF
• Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Studia Entomologica 15:3-344. PDF
• Ward, P. S. 1989a. Systematic studies on pseudomyrmecine ants: revision of the Pseudomyrmex oculatus and P. subtilissimus species groups, with taxonomic comments on other species. Quaestiones Entomologicae 25:393-468. PDF
• Ward, P. S. 1999b. Systematics, biogeography and host plant associations of the Pseudomyrmex viduus group (Hymenoptera: Formicidae), Triplaris- and Tachigali-inhabiting ants. Zoological Journal of the Linnean Society 126:451-540. PDF
• Wheeler, W. M. 1942. Studies of Neotropical ant-plants and their ants. Bulletin of the Museum of Comparative Zoology 90:1-262. PDF