• Subspecies of Tetramorium opacum: Wheeler, 1922: 909; Emery, 1924f: 290.
• Junior synonym of Tetramorium opacum: Brown, 1964a: 15; Bolton, 1976: 303; Bolton, 1986a: 15; Bolton, 1995b: 377.

Obsolete combinations

• Rhoptromyrmex opacus esta

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. 1924f ("1922"). Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [concl.]. Genera Insectorum 174C:207-397. PDF
• 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
• Wheeler, W. M. 1922. Ants of the American Museum Congo expedition. New York: Bulletin of the American Museum of Natural History, 1139.