Bombus edwardsii Cresson, 1878:184 - Cockerell, 1904Cockerell, T.D.A. 1904. The bees of southern California. V. Bulletin of the Southern California Academy of Science 3 (6):86-90. (distribution); Franklin, 1913Franklin, H.J. 1913. The Bombidae of the New World. Transactions of the American Entomological Society 38 (3/4):177-486. (distribution), 438 ( listed as synonym of Bombus rufocinctus Cresson, 1863); Cockerell, 1941Cockerell, T.D.A. 1941. Observations on plants and insects in northwestern Baja California, Mexico, with descriptions of new bees. Trans. San Diego Soc. Nat. Hist. 9 (31):337-352. (distribution).
Bombus bifarius Cresson, 1878:185 - Cockerell, 1907Cockerell, T.D.A. 1907. The bees of Boulder County, Colorado. University of Colorado Studies 4:239-259. (distribution); Franklin, 1913Franklin, H.J. 1913. The Bombidae of the New World. Transactions of the American Entomological Society 38 (3/4):177-486.:328 ( listed as synonym of Bombus edwardsii Cresson, 1878); Cockerell, 1919Cockerell, T.D.A. 1919. The bees of Peaceful Valley, Colorado. Journal of the New York Entomological Society 27:298-300. (distribution); Mayer et al., 2000Mayer, D.F., E.R. Miliczky, B.F. Finnigan & C.A. Johansen 2000. The bee fauna (Hymenoptera: Apoidea) of southeastern Washington. Journal of the Entomological Society of British Columbia 97:25-32. (distribution).
Bombus ternarius lacustris Handlirsch, 1888:230 - Franklin, 1913Franklin, H.J. 1913. The Bombidae of the New World. Transactions of the American Entomological Society 38 (3/4):177-486.:328 ( listed as synonym of Bombus edwardsii Cresson, 1878).
Bombus nearcticus Handlirsch, 1888:243 - Franklin, 1913Franklin, H.J. 1913. The Bombidae of the New World. Transactions of the American Entomological Society 38 (3/4):177-486.:328 ( listed as synonym of Bombus edwardsii Cresson, 1878).