Bombus (Pyrobombus) ternarius Say 1837

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 : 43-44

Bombus (Pyrobombus) ternarius Say 1837 (lapponicus group)

= Bombus ternarius var. expallidus Cockerell 1916: 9 . (Michigan holotype; Fig. 7D )

Holotype. ♀ USA: Michigan: Schoolcraft Co.: Floodwood , 20 Jul. 1915, F.M. Gaige ( NMNH: 40085).

County records: Alcona, Alger, Alpena, Arenac, Baraga, Benzie, Charlevoix, Cheboygan, Chippewa, Crawford, Delta, Dickinson, Emmet, Gladwin, Gogebic, Grand Traverse, Gratiot, Houghton, Huron, Ingham, Iosco, Iron, Kalkaska, Kent, Keweenaw, Leelanau, Luce, Mackinac, Marquette, Mason, Mecosta, Menominee, Midland, Missaukee, Montcalm, Montmorency, Oakland, Oceana, Ogemaw, Ontonagon, Oscoda, Otsego, Presque Isle, Roscommon, Saginaw, Schoolcraft, Shiawassee, Van Buren, Wayne, Wexford.

Notes. The holotype of B. t. expallidus differs from most B. ternarius in having metasomal terga 2 and 3 entirely yellow ( Cockerell 1916; Williams et al. 2014). Bumble bees routinely vary in color due to both genetic variation and wear, and it is not currently recognized as a valid taxon.

Figures

FIGURE 7. Michigan holotype material at the National Museum of Natural History, Smithisonian Institution. A) Andrena (Trachandrena) compacta Mitchell, dorsal habitus (= A. ceanothi Viereck). B) Andrena (Trachandrena) arenakensis Mitchell, lateral habitus (= A. hippotes Robertson). C) Andrena (Bythandrena) acra Mitchell, lateral habitus (= A. wilmattae (Cockerell )). D) Bombus ternarius var. expallidus Cockerell, lateral habitus (subspecies not recognized). Photographs provided with the permission of the National Museum of Natural History, Smithsonian Institution, 10 th and Constitution Ave. N. W., Washington, DC 20560 - 0193. (http: // www. nmnh. si. edu /).