• Bolton, 1986a: 15 (q.m.).
• Combination in Tetramorium: Ward et al., 2015: 75.
• Status as species: Forel, 1916: 419; Wheeler, 1922: 195, 908; Emery, 1924f: 290; Weber, 1952a: 29; Brown, 1964a: 15 (redescription); Bolton, 1976: 302; Bolton, 1986a: 15 (redescription); Bolton, 1995b: 378; Hita Garcia et al., 2013: 215.
• Senior synonym of Tetramorium opacum esta: Brown, 1964a: 15; Bolton, 1976: 303; Bolton, 1986a: 15; Bolton, 1995b: 378.
• Senior synonym of Tetramorium opacum laeviceps: Brown, 1964a: 15; Bolton, 1976: 303; Bolton, 1986a: 15; Bolton, 1995b: 378.
• Senior synonym of Tetramorium opacum monodi: Brown, 1964a: 15; Bolton, 1976: 303; Bolton, 1986a: 15; Bolton, 1995b: 378.

Junior synonyms

• Tetramorium opacum esta (Forel, 1909)
  Obsolete combination(s): Rhoptromyrmex opacus esta
• Tetramorium opacum laeviceps (Santschi, 1916)
  Obsolete combination(s): Rhoptromyrmex opacus laeviceps
• Tetramorium opacum monodi (Bernard, 1953)
  Obsolete combination(s): Rhoptromyrmex opacus monodi

Obsolete combinations

• Rhoptromyrmex opacus

Citations

• Bolton, B. 1976. The ant tribe Tetramoriini (Hymenoptera: Formicidae). Constituent genera, review of smaller genera and revision of Triglyphothrix Forel. Bulletin of the British Museum (Natural History). Entomology 34:281-379. PDF
• Bolton, B. 1986a. A taxonomic and biological review of the tetramoriine ant genus Rhoptromyrmex (Hymenoptera: Formicidae). Systematic Entomology 11:1-17. PDF
• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Brown, W. L., Jr. 1964a. Some tramp ants of Old World origin collected in tropical Brazil. Entomological News 75:14-15. PDF
• Emery, C. 1909. [Untitled. Rhoptromyrmex opacus sp. nov.]. Pp. 59-60 in: Forel, A. 1909b. Fourmis du Musée de Bruxelles. Fourmis de Benguela récoltées par M. Creighton Wellman, et fourmis du Congo récoltées par MM. Luja, Kohl et Laurent. Annales de la Société Entomologique de Belgique 53:51-73. PDF
• Emery, C. 1924f ("1922"). Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [concl.]. Genera Insectorum 174C:207-397. PDF
• Forel, A. 1916. Fourmis du Congo et d'autres provenances récoltées par MM. Hermann Kohl, Luja, Mayné, etc. Revue Suisse de Zoologie 24:397-460. PDF
• Hita Garcia, F.; Wiesel, E.; Fischer, G. 2013. The ants of Kenya (Hymenoptera: Formicidae)—faunal overview, first species checklist, bibliography, accounts for all genera, and discussion on taxonomy and zoogeography. Journal of East African Natural History 101 (2):127-222. PDF
• Ward, P. S.; Brady, S. G.; Fisher, B. L.; Schultz, T. R. 2015. The evolution of myrmicine ants: phylogeny and biogeography of a hyperdiverse ant clade (Hymenoptera: Formicidae). Systematic Entomology 40:61-81. 10.1111/syen.12090 PDF
• Weber, N. A. 1952a. Studies on African Myrmicinae, I (Hymenoptera, Formicidae). American Museum Novitates 1548:1-32. PDF
• Wheeler, W. M. 1922. Ants of the American Museum Congo expedition. New York: Bulletin of the American Museum of Natural History, 1139.