Coelioxys (Boreocoelioxys) octodentatus Say 1824

County records: Berrien, Cheboygan, Clinton, Huron, Ingham, Kalamazoo, Kalkaska, Lenawee, Livingston, Midland, Oakland, Shiawassee, Van Buren, Washtenaw, Wayne.

Notes. Hosts include Megachile brevis Say (Baker 1971; Hicks 1926; Michener 1953; Pengelly 1955), M. mendica Cresson (Medler 1965), M. centuncularis (Medler & Lussenhop 1968; Pengelly 1955), M. perihirta Cockerell and M. rotundata (Baker 1975), and M. texana and possibly M. frigida and M. melanophaea (Pengelly 1955) .