Bombus insularis (Smith)
interruptus Greene, 1858:11, not of Lepeletier, 1832:381 (= B. rupestris (Fabricius))
insularis (Smith, 1861:155 [Apathus]) examined
consultus (Franklin, 1913:459 [Psithyrus])
bicolor (Franklin, 1913:460 [Psithyrus]) not of Höppner, 1897:33 (= B. soroeensis (Fabricius))
crawfordi (Franklin, 1913:464 [Psithyrus]) examined

TAXONOMIC STATUS: According to D. Yanega (in litt.), who has examined the type material, B. bicolor (Franklin) is conspecific with B. interruptus.

DISTRIBUTION: W Nearctic, E Nearctic Regions.