Osmia (Osmia) lignaria lignaria Say 1837

County records: Alger, Allegan, Berrien, Clinton, Delta, Dickinson, Genesee, Gogebic, Grand Traverse, Ingham, Ionia, Iron, Kalamazoo, Kent, Keweenaw, Livingston, Marquette, Montcalm, Oakland, Ontonagon, Ottawa, Roscommon, Shiawassee, Van Buren, Washtenaw, Wayne.

Note. Nests have been described by Rau (1937), Krombein (1967), Medler (1967a) and others. The western subspecies O. l. propinqua Cresson in particular, has been used as a managed crop pollinator (Bosch et al. 2000; Bosch & Kemp 2001, 2002).