Western Bumble Bee

Western Bumble Bee, photo by Alistair Fraser
Western Bumble Bee (mckayi subspecies)
Bombus occidentalis mckayi
NWT List of Species at Risk: 
No status
NWT SARC Assessment: 
Data Deficient
Federal Species at Risk Act list: 
Under Consideration
COSEWIC Assessment: 
Special Concern
NWT General Status Rank: 

Western Bumble Bee is a medium-sized bumble bee. It has a short head and a band of yellow hair across the thorax in front of the base of the wings. Between the wings there is a black band or a large black central spot. The tip of the abdomen is almost always white. The subspecies found in the NWT is the northern long-haired subspecies mckayi, which has yellow hair behind the wings and on the third segment of the abdomen.

Length: Female queens, 1.6 to 1.9 cm (0.63 to 0.75 in) Female workers, 1.1 to 1.3 cm (0.43 to 0.51 in) Males, 1.0 to 2.0 cm (0.39 to 0.79 in)

Report Western Bumble Bee sightings to WILDLIFEOBS@gov.nt.ca

Check out the Field Guide to Bumble Bees of the Northwest Territories.