Bombus [Psithyrus] ashtoni female Bombus [Psithyrus] ashtoni male Bombus [Psithyrus] bohemicus female Bombus [Psithyrus] bohemicus male Bombus [Psithyrus] fernaldae female Bombus [Psithyrus] fernaldae male Bombus [Psithyrus] flavidus female Bombus [Psithyrus] flavidus male Bombus [Psithyrus] insularis female Bombus [Psithyrus] insularis male Bombus [Psithyrus] suckleyi female Bombus [Psithyrus] suckleyi male Bombus appositus female A Bombus appositus female B Bombus balteatus female A Bombus balteatus female B Bombus bifarius bifarius female Bombus bifarius bifarius female B Bombus bifarius bifarius male Bombus bifarius nearcticus female Bombus bifarius nearcticus female B Bombus bifarius nearcticus male Bombus fervidus dark form Bombus griseocollis female Bombus hyperboreus female Bombus jonellus jonellus female Bombus kirbiellus female A Bombus kirbiellus female B Bombus lucorum lucorum female Bombus melanopygus female Bombus occidentalis female form A Bombus polaris polaris female Bombus polaris polaris male Bombus rufocinctus female Bombus terricola female form B Bombus vosnesenskii female Bombus vosnesenskii queen