Aphaenogaster occidentalis

Distribution based on Regional Taxon Lists
Nearctic Region: Canada, United States.

Castes

 * Worker

Nomenclature

 *  occidentalis. Stenamma (Aphaenogaster) subterraneum subsp. occidentale Emery, 1895c: 301 (w.) U.S.A. Wheeler, G.C. & Wheeler, J. 1953b: 61 (l.). Combination in Aphaenogaster (Attomyrma): Emery, 1921f: 60. Senior synonym of borealis and material of the unavailable name manni referred here: Creighton, 1950a: 150. Raised to species: Hunt & Snelling, 1975: 21.
 * borealis. Aphaenogaster subterranea subsp. borealis Wheeler, W.M. 1915b: 412 (w.) CANADA. Junior synonym of occidentalis: Creighton, 1950a: 150.