Bombus [Psithyrus] bohemicus male Bombus [Psithyrus] flavidus female Bombus [Psithyrus] flavidus male Bombus [Psithyrus] insularis female Bombus [Psithyrus] insularis male Bombus [Psithyrus] suckleyi Queen Bombus [Psithyrus] suckleyi female Bombus [Psithyrus] suckleyi male Bombus appositus female A Bombus appositus female B Bombus fervidus dark form Bombus griseocollis female Bombus jonellus jonellus female Bombus kirbiellus female A Bombus kirbiellus female B Bombus melanopygus female Bombus occidentalis female form A Bombus pensylvanicus female Bombus polaris polaris female Bombus polaris polaris male Bombus rufocinctus female Bombus terricola female form B Bombus vancouverensis nearcticus female A Bombus vancouverensis nearcticus female B Bombus vancouverensis nearcticus male Bombus vosnesenskii Queen Bombus vosnesenskii female