• [Alfaria also described as new by Emery, 1896g: 41.]
• Alfaria in Ponerinae: Emery, 1896e: 177 [Ponerinae].
• Alfaria in Ponerinae, Ponerini: Forel, 1899b: 3.
• Alfaria in Pachycondylinae, Ectatommini: Ashmead, 1905c: 382.
• Alfaria in Ponerinae, Ectatommini: Wheeler, 1910a: 135; Emery, 1911e: 46; Forel, 1917: 236; Wheeler, 1922: 642; subsequent authors.
• Alfaria as junior synonym of Gnamptogenys: Brown, 1958g: 211; Kempf, 1972b: 111; Smith, 1979: 1337; Hölldobler & Wilson, 1990: 10; Bolton, 1995b: 19; Bolton, 2003: 174.
• Alfaria as genus: Forel, 1899b: 3; Ashmead, 1905c: 382; Wheeler, 1910a: 135; Emery, 1911e: 46; Forel, 1917: 236; Wheeler, 1922: 642; Camacho et al., 2022: 10 (diagnosis).
• Alfaria as senior synonym of Opisthoscyphus: Brown, 1957k: 115; Camacho et al., 2022: 10.

Junior synonyms

• Opisthoscyphus Mann, 1922

Citations

• Ashmead, W. H. 1905c. A skeleton of a new arrangement of the families, subfamilies, tribes and genera of the ants, or the superfamily Formicoidea. Canadian Entomologist 37:381-384. PDF
• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Bolton, B. 2003. Synopsis and classification of Formicidae. Memoirs of the American Entomological Institute 71:1-370. PDF
• Brown, W. L., Jr. 1957k. [Untitled. Taxonomic changes in Alfaria, Gnamptogenys, Heteroponera, Opisthoscyphus, Paranomopone, Proceratium and Sysphingta attributed to Brown.]. Pp. 112-118 in: Borgmeier, T. 1957a. Myrmecologische Studien, I. Anais da Academia Brasileira de Ciencias 29:103-128. PDF
• Brown, W. L., Jr. 1958g. Contributions toward a reclassification of the Formicidae. II. Tribe Ectatommini (Hymenoptera). Bulletin of the Museum of Comparative Zoology 118:173-362. PDF
• Camacho, G. P.; Franco, W.; Branstetter, M. G.; Pie, M. R.; Longino, J. T.; Schultz, T. R.; Feitosa, R. M. 2022. UCE phylogenomics resolves major relationships among ectaheteromorph ants (Hymenoptera: Formicidae: Ectatomminae, Heteroponerinae): a new classification for the subfamilies and the description of a new genus. Insect Systematics and Diversity 6 (1): 5:1-20. 10.1093/isd/ixab026 PDF
• Emery, C. 1896e. Clef analytique des genres de la famille des Formicides, pour la détermination des neutres. Annales de la Société Entomologique de Belgique 40:172-189. PDF
• Emery, C. 1896g. Studi sulle formiche della fauna neotropica. XVII-XXV. Bullettino della Società Entomologica Italiana 28:33-107. PDF
• Emery, C. 1911e. Hymenoptera. Fam. Formicidae. Subfam. Ponerinae. Genera Insectorum 118:1-125. PDF
• Forel, A. 1899b. Formicidae. [part]. Biologia Centrali-Americana Hym. 3:1-24. PDF
• Forel, A. 1917. Cadre synoptique actuel de la faune universelle des fourmis. Bulletin de la Société Vaudoise des Sciences Naturelles 51:229-253. PDF
• Hölldobler, B.; Wilson, E. O. 1990. The ants. Cambridge, Mass.: Harvard University Press, xii + 732 pp.
• Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Studia Entomologica 15:3-344. PDF
• Smith, D. R. 1979. Superfamily Formicoidea. Pp. 1323-1467 in: Krombein, K. V.; Hurd, P. D.; Smith, D. R.; Burks, B. D. (eds.) 1979. Catalog of Hymenoptera in America north of Mexico. Volume 2. Apocrita (Aculeata). Washington, D.C.: Smithsonian Institution Press, pp. i-xvi, 1199-2209.
• Wheeler, W. M. 1910a. Ants: their structure, development and behavior. New York: Columbia University Press, xxv + 663 pp. PDF
• Wheeler, W. M. 1922. Ants of the American Museum Congo expedition. New York: Bulletin of the American Museum of Natural History, 1139.