• Lectotype designation: LaPolla, 2004a: 40.
• [Misspelled as decdens by Borgmeier, 1927c: 137.]
• Combination in Rhizomyrma: Emery, 1906c: 184.
• Combination in Acropyga (Rhizomyrma): Emery, 1925d: 29.
• Status as species: Dalla Torre, 1893: 174; Forel, 1895b: 106; Emery, 1925d: 29; Borgmeier, 1927c: 137; Wheeler, 1935f: 327; Donisthorpe, 1936b: 110 (in list); Weber, 1944b: 92 (redescription); Kempf, 1972b: 17; Bolton, 1995b: 57; LaPolla, 2004a: 40 (redescription).

Obsolete combinations

• Brachymyrmex decedens

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
• Dalla Torre, K. W. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. PDF
• Donisthorpe, H. 1936b. Acropyga (Rhizomyrma) robae sp. nov. (Hym. Formicidae), a new S. American ant, with remarks on the genus, etc. Entomologist 69:108-111. PDF
• Emery, C. 1906c ("1905"). Studi sulle formiche della fauna Neotropica. XXXVII. Bullettino della Società Entomologica Italiana 37 (1905):107-194. PDF
• Emery, C. 1925d. Hymenoptera. Fam. Formicidae. Subfam. Formicinae. Genera Insectorum 183:1-302. PDF
• Forel, A. 1895b. A fauna das formigas do Brazil. Boletim do Museu Paraense de Historia Natural e Ethnographia 1:89-139. PDF
• Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Studia Entomologica 15:3-344. PDF
• LaPolla, J. S. 2004a. Acropyga (Hymenoptera: Formicidae) of the world. Contributions of the American Entomological Institute 33(3):1-130. PDF
• Mayr, G. 1887. Südamerikanische Formiciden. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 37:511-632. PDF
• Weber, N. A. 1944b. The neotropical coccid-tending ants of the genus Acropyga Roger. Annals of the Entomological Society of America 37:89-122. PDF
• Wheeler, W. M. 1935f. Ants of the genus Acropyga Roger, with description of a new species. Journal of the New York Entomological Society 43:321-329. PDF