Megachile (Xanthosarus) perihirta Cockerell 1898

County records: Mackinac, Schoolcraft.

Notes. A widespread western species but poorly documented in the Eastern United States. The occurrence in Michigan was confirmed from a male specimen deposited at the UMMZ. The biology of this ground-nesting species has been studied in Alberta (Hobbs 1956; Hobbs & Lilly 1954; Sladen 1918).