Formica yessensis

Distribution
This taxon was described from Japan.

Nomenclature

 *  yessensis. Formica truncicola var. yessensis Wheeler, W.M. 1913f: 391 (in key) (w.) JAPAN. [First available use of Formica rufa r. truncicola var. yessensis Forel, 1901h: 66; unavailable name.] Kupyanskaya, 1984: 103 (q.m.); Imai, 1966: 119 (k.). Subspecies of truncicola: Ruzsky, 1926: 110; of truncorum: Wheeler, W.M. 1933c: 66. Junior synonym of lugubris: Dlussky, 1967a: 91. Revived from synonymy and raised to species: Collingwood, 1976: 304. See also: Kupyanskaya, 1990: 194.