• Combination in Paracryptocerus (Paracryptocerus): Kempf, 1951: 232.
• Status as species: Dalla Torre, 1893: 142; Forel, 1895b: 133; Emery, 1924f: 309; Borgmeier, 1927c: 118; Kempf, 1951: 232.
• Junior synonym of Cephalotes placidus: Kempf, 1963c: 437; Kempf, 1972b: 107; Bolton, 1995b: 189; De Andrade & Baroni Urbani, 1999: 156; Oliveira et al., 2021: 19 (in list).

Obsolete combinations

• Cryptocerus fenestralis

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
• De Andrade, M. L.; Baroni Urbani, C. 1999. Diversity and adaptation in the ant genus Cephalotes, past and present. Stuttgarter Beiträge zur Naturkunde. Serie B (Geologie und Paläontologie) 271:1-889. PDF
• Emery, C. 1924f ("1922"). Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [concl.]. Genera Insectorum 174C:207-397. 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. 1951. A taxonomic study on the ant tribe Cephalotini (Hymenoptera: Formicidae). Revista de Entomologia (Rio de Janeiro) 22:1-244. PDF
• Kempf, W. W. 1963c. Nota sinonímica acêrca de formigas da tribo Cephalotini (Hymenoptera, Formicidae). Revista Brasileira de Biologia 23:435-438. PDF
• Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Studia Entomologica 15:3-344. PDF
• Oliveira, A. M.; Powell, S.; Feitosa, R. M. 2021. A taxonomic study of the Brazilian turtle ants (Formicidae: Myrmicinae: Cephalotes). Revista Brasileira de Entomologia 65 (3):52 pp. e20210028. [online early] 10.1590/1806-9665-RBENT-2021-0028 PDF
• Smith, F. 1876d. Descriptions of new species of Cryptoceridae, belonging to the genera Cryptocerus, Meranoplus, and Cataulacus. Transactions of the Entomological Society of London 1876:603-612. PDF