Formica mucescens

Distribution
This taxon was described from U.S.A.

Nomenclature

 *  mucescens. Formica truncicola subsp. mucescens Wheeler, W.M. 1913f: 442 (w.q.m.) U.S.A. Subspecies of rufa: Creighton, 1940a: 3. Raised to species: Creighton, 1950a: 491.