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