Bombus (Pyrobombus) impatiens Cresson 1863

Gibbs, Jason, Ascher, John S., Rightmyer, Molly G. & Isaacs, Rufus, 2017, The bees of Michigan (Hymenoptera: Apoidea: Anthophila), with notes on distribution, taxonomy, pollination, and natural history, Zootaxa 4352 (1), pp. 1-160 : 43

Bombus (Pyrobombus) impatiens Cresson 1863 (lapponicus group)

County records: Alcona, Allegan, Alpena, Antrim, Barry, Bay, Benzie, Berrien, Branch, Calhoun, Cass, Charlevoix, Cheboygan, Clare, Clinton, Crawford, Eaton, Emmet, Genesee, Gladwin, Grand Traverse, Gratiot, Hillsdale, Huron, Ingham, Ionia, Iosco, Isabella, Jackson, Kalamazoo, Kent, Lake, Lapeer, Leelanau, Lenawee, Livingston, Mackinac, Macomb, Manistee, Mason, Mecosta, Menominee, Midland, Missaukee, Monroe, Montcalm, Muskegon, Newaygo, Oakland, Oceana, Osceola, Ottawa, Saginaw, Sanilac, St. Clair, St. Joseph, Tuscola, Van Buren, Washtenaw, Wayne, Wexford.

Notes. Bombus impatiens is often the most common wild pollinator of agricultural crops in Michigan. It is abundant as queens and workers in spring crops such as apple, blueberry and tart cherry ( Gibbs et al. 2016; Russo et al. 2015) and the workers visit field crops such as cucumber and pumpkin ( Artz & Nault 2011; Petersen et al. 2013; Smith et al. 2013). It nests underground ( Plath 1922). Commercially produced colonies of this species are available, with a production facility located in Michigan.