• Combination in Crematogaster (Orthocrema): Emery, 1922c: 136; Blaimer, 2012c: 55.
• Subspecies of Crematogaster longispina: Emery, 1922c: 136; Wheeler, 1923a: 3; Borgmeier, 1927c: 95; Santschi, 1929f: 88.
• Status as species: Kempf, 1970b: 332; Kempf, 1972b: 87; Bolton, 1995b: 152; Bezděčková et al., 2015: 117.

Obsolete combinations

• Crematogaster longispina egregior

Citations

• Bezděčková, K.; Bezděčka, P.; Machar, I. 2015. A checklist of the ants of Peru. Zootaxa 4020:101-133. PDF
• Blaimer, B. B. 2012c. A subgeneric revision of Crematogaster and discussion of regional species-groups (Hymenoptera: Formicidae). Zootaxa 3482:47-67. PDF
• 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
• Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B:95-206. 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. 1970b. Levantamento das formigas da Mata Amazônica, nos Arredores de Belém do Pará, Brasil. Studia Entomologica 13:321-344. PDF
• Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Studia Entomologica 15:3-344. PDF
• Santschi, F. 1929f. Mélange myrmécologique. Wiener Entomologische Zeitung 46:84-93. PDF
• Wheeler, W. M. 1923a. Wissenschaftliche Ergebnisse der schwedischen entomologischen Reise des Herrn Dr. A. Roman in Amazonas 1914-1915. 7. Formicidae. Arkiv för Zoologi 15(7):1-6. PDF