• Wheeler & Wheeler, 1953c: 150 (l.)
• Combination in Lasius: Mayr, 1886d: 429.
• Combination in Lasius (Chthonolasius): Ruzsky, 1912: 633; Ruzsky, 1914a: 61.
• As unavailable (infrasubspecific) name: Emery, 1893k: 640; Wheeler, 1900c: 47; Wheeler, 1904f: 305; Wheeler, 1905j: 397; Wheeler, 1906g: 13; Wheeler, 1910h: 239; Wheeler, 1910a: 569; Wheeler, 1916o: 172; Wheeler, 1916r: 593; Wheeler, 1917a: 528; Wheeler, 1917h: 167; Wheeler, 1917k: 463; Emery, 1925d: 235; Smith, 1928c: 277; Dennis, 1938: 296; Wing, 1939: 164; Wesson & Wesson, 1940: 101; Cole, 1942: 375; Smith, 1951c: 852.
• Junior synonym of Lasius flavus: Mayr, 1886d: 429; Cresson, 1887: 255.
• Junior synonym of Lasius umbratus: Wilson, 1955a: 150; Smith, 1958c: 150; Smith, 1979: 1439; Bolton, 1995b: 221; Coovert, 2005: 127; Radchenko, 2016: 373.
• Subspecies of Lasius umbratus: Emery, 1893m: 182; Wheeler, 1908k: 406; Buren, 1944a: 297; Wheeler & Wheeler, 1944: 257; Creighton, 1950a: 425.
• Status as species: Mayr, 1863a: 411; Schär et al., 2018: 6.
• Senior synonym of Lasius umbratus epinotalis: Schär et al., 2018: 6.

Junior synonyms

• Lasius umbratus epinotalis Buren, 1944

Obsolete combinations

• Formica aphidicola

Citations

• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Buren, W. F. 1944a. A list of Iowa ants. Iowa State College Journal of Science 18:277-312. PDF
• Cole, A. C., Jr. 1942. The ants of Utah. American Midland Naturalist 28:358-388. PDF
• Coovert, G. A. 2005. The ants of Ohio. Bulletin of the Ohio Biological Survey (New Series) 15 (2):1-196. PDF
• Creighton, W. S. 1950a. The ants of North America. Bulletin of the Museum of Comparative Zoology 104:1-585. PDF
• Cresson, E. T. Sr. 1887. Synopsis of the families and genera of the Hymenoptera of America, north of Mexico, together with a catalogue of the described species, and bibliography. Transactions of the American Entomological Society, Suppl. Vol. 1887:1-351. PDF
• Dennis, C. A. 1938. The distribution of ant species in Tennessee with reference to ecological factors. Annals of the Entomological Society of America 31:267-308. PDF
• Emery, C. 1893k. Beiträge zur Kenntniss der nordamerikanischen Ameisenfauna. Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere 7:633-682. PDF
• Emery, C. 1893m. [Untitled. Taxonomic changes in various genera attributed to Emery.]. Pp. 4-266 in: Dalla Torre, K. W. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. PDF
• Emery, C. 1925d. Hymenoptera. Fam. Formicidae. Subfam. Formicinae. Genera Insectorum 183:1-302. PDF
• Mayr, G. 1863a. Formicidarum index synonymicus. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 13:385-460. PDF
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• Radchenko, A. G. 2016. Ants (Hymenoptera, Formicidae) of Ukraine. National Academy of Sciences of Ukraine. Kiev: I. I. Schmalhausen Institute of Zoology, 496 pp.
• Ruzsky, M. 1912. Myrmecological notes. [In Russian.]. Uchenye Zapiski Kazanskago Veterinarnago Instituta 29:629-636. PDF
• Ruzsky, M. 1914a ("1913"). Myrmekologische Notizen. Archiv für Naturgeschichte (A)79(9):58-63. PDF
• Schär, S.; Talavera, G.; Espadaler, X.; Rana, J. D.; Andersen, A. A.; Cover, S. P.; Vila, R. 2018. Do Holarctic ant species exist? Trans-Beringian dispersal and homoplasy in the Formicidae. Journal of Biogeography 00:1-12. 10.1111/jbi.13380 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.
• Smith, M. R. 1928c. An additional annotated list of the ants of Mississippi. With a description of a new species of Aphaenogaster (Hym.: Formicidae) (continued from page 246). Entomological News 39:275-279. PDF
• Smith, M. R. 1951c. Family Formicidae. Pp. 778-875 in: Muesebeck, C. F. W.; Krombein, K. V.; Townes, H. K. (eds.) 1951. Hymenoptera of America north of Mexico. Synoptic catalogue. United States Department of Agriculture. Agriculture Monograph 2:1-1420. PDF
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