Bombus (Thoracobombus) pensylvanicus (DeGeer 1773) ( pensylvanicus group)

County records: Alger, Allegan, Alpena, Arenac, Barry, Bay, Benzie, Berrien, Branch, Calhoun, Cass, Cheboygan, Chippewa, Clare, Clinton, Eaton, Gladwin, Gogebic, Hillsdale, Huron, Ingham, Ionia, Iosco, Isabella, Jackson, Kalamazoo, Kent, Lapeer, Lenawee, Livingston, Macomb, Manistee, Mason, Mecosta, Midland, Monroe, Muskegon, Newaygo, Oakland, Oceana, Otsego, Saginaw, Sanilac, Shiawassee, St. Clair, St. Joseph, Tuscola, Van Buren, Washtenaw, Wayne.

Notes. No recent specimens examined. Bombus pensylvanicus is evidently a declining species in the northern extent of its historical range (Grixti et al. 2009), but is still commonly seen in the south and western part of its range (Cameron et al. 2011; many recent records at http://bugguide.net/node/view/65631).