• Combination in Cryptocerus: Guérin-Méneville, 1844a: 426
• Status as species: Smith, 1853: 222; Smith, 1858a: 191; Mayr, 1862: 764; Smith, 1862d: 410; Mayr, 1863a: 405; Roger, 1863b: 38; Emery, 1878a: ix (in list).
• Junior synonym of Cephalotes minutus: Emery, 1890c: 74; Dalla Torre, 1893: 143; Forel, 1895b: 134; Forel, 1899b: 50.
• Junior synonym of Cephalotes pusillus: Emery, 1924f: 307; Borgmeier, 1927c: 116; Kempf, 1951: 176; Kempf, 1958a: 14; Kempf, 1972b: 180; Brandão, 1991: 388; Bolton, 1995b: 424; De Andrade & Baroni Urbani, 1999: 172; Oliveira et al., 2021: 42 (in list).
• [Note: De Andrade & Baroni Urbani, 1999: 172, 194, enter Cephalotes caustica as a junior synonym under both Cephalotes pusillus and Cephalotes minutus. It rests here as a junior synonym of Cephalotes pusillus, though its true identity may never be known.]

Obsolete combinations

• Formica caustica

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
• Brandão, C. R. F. 1991. Adendos ao catálogo abreviado das formigas da região Neotropical (Hymenoptera: Formicidae). Revista Brasileira de Entomologia 35:319-412. 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. 1878a. Liste des fourmis de la collection de feu Camille van Volxem, avec la description d'une espèce nouvelle. Annales de la Société Entomologique de Belgique 21:viii-x. PDF
• Emery, C. 1890c. Studii sulle formiche della fauna neotropica. Bullettino della Società Entomologica Italiana 22:38-80. 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
• Forel, A. 1899b. Formicidae. [part]. Biologia Centrali-Americana Hym. 3:1-24. PDF
• Guérin-Méneville, F. E. 1844a. Iconographie du règne animal de G. Cuvier, ou représentation d'après nature de l'une des espèces les plus remarquables, et souvent non encore figurées, de chaque genre d'animaux. Insectes. Paris: J. B. Baillière, 576 pp. PDF
• Horn, W.; Kahle, I. 1935. Sammlungen, welche ihren Eigentümer gewechselt haben [Part 1]. Entomologische Beihefte aus Berlin-Dahlem 2:1-160.
• Horn, W.; Kahle, I. 1936. Sammlungen, welche ihren Eigentümer gewechselt haben [Part 2: continued from Horne & Kahle 1935]. Entomologische Beihefte aus Berlin-Dahlem 3:161-296.
• 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. 1958a. New studies of the ant tribe Cephalotini (Hym. Formicidae). Studia Entomologica (n.s.)1:1-168.
• Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Studia Entomologica 15:3-344. PDF
• Kollar, V. 1832. [Untitled. New species of Cephalotes attributed to V. Kollar.]. P. 17 in: Pohl, I. E.; Kollar, V. 1832. Brasiliens vorzüglich lästige Insecten. Besonderer Abdruck aus der Reise im Innern von Brasilien von Dr. Pohl. Wien: publisher/printer not given, 20 pp.
• Mayr, G. 1862. Myrmecologische Studien. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 12:649-776. PDF
• Mayr, G. 1863a. Formicidarum index synonymicus. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 13:385-460. 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
• Roger, J. 1863b. Verzeichniss der Formiciden-Gattungen und Arten. Berliner Entomologische Zeitschrift 7(Beilage):1-65. PDF
• Smith, F. 1853 ("1854"). Monograph of the genus Cryptocerus, belonging to the group Cryptoceridae - family Myrmicidae - division Hymenoptera Heterogyna. Transactions of the Entomological Society of London (2)2:213-228. PDF
• Smith, F. 1858a. Catalogue of hymenopterous insects in the collection of the British Museum. Part VI. Formicidae. London: British Museum, 216 pp. PDF
• Smith, F. 1862d. A list of the genera and species belonging to the family Cryptoceridae, with descriptions of new species; also a list of the species of the genus Echinopla. Transactions of the Entomological Society of London (3)1:407-416. PDF