Hylaeus (Prosopis) modestus modestus Say 1837

County records: Allegan, Antrim, Barry, Berrien, Charlevoix, Cheboygan, Clare, Clinton, Ingham, Ionia, Kalamazoo, Kent, Mackinac, Marquette, Midland, Missaukee, Oakland, Ottawa, Shiawassee, St. Clair, Van Buren, Washtenaw, Wayne.

Notes. Trap nests in New York described by Krombein (1967) and nests in Missouri sumac stems by Rau (1922, 1930).