Osmia (Diceratosmia) conjuncta Cresson 1864

County records: Allegan, Antrim, Barry, Berrien, Cheboygan, Clare, Clinton, Hillsdale, Huron, Ingham, Kalamazoo, Leelanau, Mackinac, Macomb, Mason, Midland, Missaukee, Oakland, Otsego, Presque Isle, Shiawassee, Van Buren.

Notes. Nests from Missouri were found in abandoned snail shells (Rau 1937).