Bombus (Pyrobombus) perplexus Cresson 1863 (hypnorum group)

County records: Alcona, Alger, Allegan, Alpena, Antrim, Baraga, Barry, Benzie, Calhoun, Charlevoix, Cheboygan, Chippewa, Clare, Delta, Dickinson, Emmet, Gladwin, Gogebic, Gratiot, Hillsdale, Houghton, Huron, Ingham, Iosco, Iron, Isabella, Jackson, Kalamazoo, Kent, Keweenaw, Lapeer, Leelanau, Lenawee, Livingston, Luce, Mackinac, Manistee, Marquette, Mason, Mecosta, Missaukee, Montcalm, Montmorency, Oakland, Oceana, Ontonagon, Osceola, Oscoda, Ottawa, Saginaw, Schoolcraft, Shiawassee, St. Clair, Van Buren, Washtenaw.

Notes. Nests at surface and in hollow of trees and logs.