Megachile (Megachile) centuncularis (Linnaeus 1758)

County records: Allegan, Barry, Berrien, Cass, Cheboygan, Genesee, Huron, Ingham, Kalamazoo, Kalkaska, Kent, Livingston, Mackinac, Marquette, Mason, Midland, Newaygo, Oakland, Ottawa, St. Joseph, Van Buren, Washtenaw, Wayne, Wexford.

Notes. Possibly exotic. Holarctic distribution that apparently does not extend into northwestern Canada and Alaska. Cavity-nests in North America have been described repeatedly (Hurd 1979), from California (Michelbacher & Hurd 1954), New York (Krombein 1967), Massachusetts (Packard 1869), Pennsylvania (Gentry 1874), Colorado (Hicks 1926), and Wisconsin (Medler 1959; Medler & Lussenhop 1968).