• Lectotype designation: Francoeur et al., 1985: 382.
• Combination in Leptothorax (Mychothorax): Ruzsky, 1904a: 288; Emery, 1924f: 262
• Combination in Formicoxenus: Francoeur et al., 1985: 382.
• Junior synonym of Formicoxenus hirticornis: Ruzsky, 1905b: 622
• Subspecies of Formicoxenus hirticornis: Emery, 1924f: 262; Ruzsky, 1925b: 45.
• Status as species: Francoeur et al., 1985: 382 (redescription); Radchenko, 1994b: 111 (in key); Bolton, 1995b: 207; Seifert, 2023c: 135 (redescription).
• Senior synonym of Formicoxenus orientalis: Francoeur et al., 1985: 382; Bolton, 1995b: 207; Radchenko, 1994b: 111; Seifert, 2023c: 135.
• Senior synonym of Formicoxenus zhengi: Seifert, 2023c: 136.

Junior synonyms

• Formicoxenus orientalis Dlussky, 1963
• Formicoxenus zhengi (Zhou & Chen, 2011)
  Obsolete combination(s): Leptothorax zhengi

Obsolete combinations

• Leptothorax sibiricus

Citations

• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Emery, C. 1924f ("1922"). Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [concl.]. Genera Insectorum 174C:207-397. PDF
• Forel, A. 1899c. Trois notices myrmécologiques. Annales de la Société Entomologique de Belgique 43:303-310. PDF
• Francoeur, A.; Loiselle, R.; Buschinger, A. 1985. Biosystématique de la tribu Leptothoracini (Formicidae, Hymenoptera). 1. Le genre Formicoxenus dans la région holarctique. Naturaliste Canadien (Québec) 112:343-403. PDF
• Radchenko, A. G. 1994b. Identification table for the ants (Hymenoptera, Formicidae) of southern Siberia. [In Russian.]. Pp. 95-118 in: Kotenko, A. G. (ed.) 1994. Hymenopterous insects of Siberia and the Far East. [In Russian.]. Trudy Zapovednika "Daurskii" 3:1-147.
• Ruzsky, M. 1904a. On ants from Archangel province. [In Russian.]. Zapiski Imperatorskago Russkago Geograficheskago Obshchestva po Obshchei Geografii 41:287-294. PDF
• Ruzsky, M. 1905b. The ants of Russia. (Formicariae Imperii Rossici). Systematics, geography and data on the biology of Russian ants. Part I. [In Russian.]. Trudy Obshchestva Estestvoispytatelei pri Imperatorskom Kazanskom Universitete 38(4-6):1-800.
• Ruzsky, M. 1925b. New data on the ant fauna of Siberia. [In Russian.]. Russkoe Entomologicheskoe Obozrenie 19:41-46. PDF
• Seifert, B. 2023c. Two new species of Formicoxenus Mayr 1855 and Leptothorax Mayr 1855 from Tibet (Hymenoptera: Formicidae). Soil Organisms 95 (2):129-142. 10.25674/so95iss2id315 PDF