Scientific Name: Bombus appositus Cresson, 1878
Common Name: White-shouldered Bumble Bee
Bombus appositus Cresson, 1878: 183 [♀, ♂‚]
Lectotype ♀ [designated by Cresson 1916: 111]. USA, Colorado [ANSP no. 2639].
Though common in British Columbia and western Alberta (montane regions) (Williams et al. 2014), Curry (1984) records this species from two locations in Saskatchewan, but these records have not been verified.
Cresson ET (1878) Descriptions of new species of North American bees. Proceedings of the Academy of Natural Sciences of Philadelphia 30: 181-221.
Curry PS (1984) Bumble bees of Saskatchewan (Hymenoptera: Apidae): a survey of their geographic distribution. Saskatchewan Museum of Natural History Contributions 5: 1-44.
Pollen Specialization: Polylectic
Wintering Stage: Mated Female
Crop Preference: Not Available
Non Crop Preference: Not Available
Distribution: Alberta, British Columbia, Saskatchewan
Ecozone: Montane Cordillera, Pacific Maritime, Prairie, Western Interior Basin