Copestylum (Volucellosia) fornax (Townsend, 1895).
Townsend, C.H.T. (1895) Notes on the Diptera of Baja California, including some species from adjacent regions. Proceedings of the California Academy of Sciences (2) 4, 593-620. [1895.04.08]
Nearctic species known from California, Arizona and part of Mexico (Thompson 2010).
unless otherwise stated