Coelioxys (Coelioxys) sodalis Cresson 1878

County records: Alger, Cheboygan, Delta, Dickinson, Ingham, Kalamazoo, Keweenaw, Manistee, Marquette, Midland, Wayne.

Notes. Hosts include Megachile melanophaea (Graenicher 1927a, 1935; Pengelly 1955), M. mucida (Gibbs 2017), M. frigida and M. texana (Pengelly 1955), and possibly M. rotundata (Hobbs 1968) . Coelioxys sodalis is now considered the only Nearctic member of the subgenus Coelioxys (Rocha Filho & Packer 2016) .