Formicoxenus sibiricus

Distribution
This taxon was described from Russian Federation.

Nomenclature

 *  sibiricus. Leptothorax sibiricus Forel, 1899b: 306 (w.) RUSSIA. Combination in L. (Mychothorax): Emery, 1924d: 262; in Formicoxenus: Francoeur, Loiselle & Buschinger, 1985: 382. Junior synonym of hirticornis: Ruzsky, 1905b: 622. Revived from synonymy as subspecies of hirticornis: Emery, 1924d: 262. Revived status as species and senior synonym of orientalis: Francoeur, Loiselle & Buschinger, 1985: 382.
 * orientalis. Formicoxenus orientalis Dlussky, 1963: 193, figs. 6, 8 (w.) RUSSIA. Junior synonym of sibiricus: Francoeur, Loiselle & Buschinger, 1985: 382. [Kupyanskaya, 1990: 149 uses the name orientalis, apparently unaware of the revision by Francoeur, et al.; their synonymy is reaffirmed by Radchenko, 1994b: 111.]

Additional References

 * [[Media:Francoeur et al 1985.pdf|Francoeur, A.; Loiselle, R.; Buschinger, A. 1985. Biosystématique de la tribu Leptothoracini (Formicidae, Hymenoptera). 1. Le genre Formicoxenus dans la région holarctique. Nat. Can. (Qué.) 112: 343-403 PDF]]