Polyergus rufescens umbratus

This taxon is not in use as it is currently considered to be a junior synonym of Polyergus mexicanus.

Nomenclature

 * umbratus. Polyergus rufescens subsp. umbratus Creighton, 1950a: 560 (w.) U.S.A. [First available use of Polyergus rufescens subsp. breviceps var. umbratus Wheeler, W.M. 1915b: 419; unavailable name.] Junior synonym of breviceps: Wheeler, J. 1968: 163; of mexicanus: Trager, 2013: 515.