Andrena (Euandrena) nigrihirta (Ashmead 1890)

= Andrena (Thysandrena) crenata Mitchell, 1960: 221 (Michigan holotype).

Holotype. ♂ USA: Michigan: Arenac Co.: 30 May 1951, R.R. Dreisbach (NCSU). Synonymy by Laberge & Ribble (1975).

County records: Alcona, Allegan, Arenac, Baraga, Cheboygan, Dickinson, Eaton, Emmet, Ingham, Iron, Isabella, Jackson, Keweenaw, Mackinac, Midland, Newaygo, Ontonagon, Ottawa, Presque Isle, Schoolcraft.

Notes. Apparently polylectic (LaBerge & Ribble 1975). Mitchell (1960) lists the crenata holotype in the Dreisbach collection, the name-bearing types of which were transferred to the NMNH. The holotype is currently listed in the NCSU type database.