• Status as species: Retzius, 1783: 76; Olivier, 1792: 503; Dalla Torre, 1893: 206.
• Incertae sedis in Myrmicinae: Kempf, 1972b: 260.
• Unidentifiable to genus; incertae sedis in Formica: Bolton, 1995b: 202.
• [Note: Latreille, 1802a: 263, and also Kempf, 1972b: 260, give Formica pusilla De Geer, 1773 as a senior synonym of Formica nana Latreille, 1802a, but the latter is also unidentifiable. Similarly, Fabricius, 1782: 491, Retzius, 1783: 76, and Fabricius, 1804: 406, give Formica pusilla De Geer, 1773 as a junior synonym of Formica omnivora Linnaeus, 1758, another unidentifiable name. It is apparent from De Geer, 1773’s pl. 31, fig. 24, that the species is a myrmicine ant.]

Citations

• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Dalla Torre, K. W. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. PDF
• De Geer, C. 1773. Mémoires pour servir à l'histoire des insectes. Tome troisième. Stockholm: Pierre Hesselberg, 696 pp. PDF
• Fabricius, J. C. 1782 ("1781"). Species insectorum exhibentes eorum differentias specificas, synonyma, auctorum loca natalia, metamorphosin adiectis observationibus, descriptionibus. Tome I. Hamburgi et Kilonii [= Hamburg and Kiel]: C. E. Bohn, 552 pp.
• Fabricius, J. C. 1804. Systema Piezatorum secundum ordines, genera, species, adjectis synonymis, locis, observationibus, descriptionibus. Brunswick: C. Reichard, xiv + 15-439 + 30 pp. PDF
• Horn, W.; Kahle, I. 1935. Sammlungen, welche ihren Eigentümer gewechselt haben [Part 1]. Entomologische Beihefte aus Berlin-Dahlem 2:1-160.
• Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Studia Entomologica 15:3-344. PDF
• Latreille, P. A. 1802a. Histoire naturelle des fourmis, et recueil de mémoires et d'observations sur les abeilles, les araignées, les faucheurs, et autres insectes. Paris: Impr. Crapelet (chez T. Barrois), xvi + 445 pp. PDF
• Olivier, A. G. 1792. Encyclopédie méthodique. Histoire naturelle. Insectes. Tome 6. (pt. 2). Paris: Panckoucke, pp. 369-704.
• Retzius, A. J. 1783. Caroli de Geer. Genera et species insectorum e generosissimi auctoris scriptis extraxit, digessit, Latine quoad partem reddidit, et terminologiam insectorum Linneanam addidit. Lipsiae [= Leipzig]: Cruse, 220 pp. PDF