Bombus bifarius
Bombus bifarius is the black-notched bumble bee. The workers range from 8- to 14-mm long. The females have extensively yellow facial setae. It is a widespread and abundant species found in mountain meadows and grassy areas. Its nests are usually underground.
Order: Hymenoptera
Family: Apidae
Species: Bombus bifarius
Photograph: © 2015 RKD Peterson
Date of Photograph: 17 August 2015
Location: Montana, Park Co. (45o00'22" N 109o24'09" W)