Coelioxys (Boreocoelioxys) sayi Robertson 1897

County records: Allegan, Barry, Benzie, Berrien, Branch, Calhoun, Cass, Gratiot, Hillsdale, Huron, Ingham, Ionia, Iosco, Isabella, Jackson, Kalamazoo, Lenawee, Midland, Missaukee, Monroe, Montcalm, Muskegon, Newaygo, Osceola, Ottawa, Shiawassee, St. Joseph, Van Buren, Washtenaw, Wayne.

Notes. Recorded as a cleptoparasite of Megachile brevis (Baker 1975) and M. mendica (Medler 1965) .