Bombus occidentalis
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Hymenoptera
- family: Apidae
- genus: Bombus
- species: Bombus occidentalis
- Banff
- Fort Macleod
Alberta- Whitehorse
Yukon
Canada- Antioch
- Bodega Bay
- Quincy
- San Bruno
- Santa Clara
- South San Francisco
California- Moscow
- Soda Springs
Idaho- Columbia Falls
- Havre
- Helena
- Red Lodge
Montana- Custer
- Hot Springs
South Dakota- Vernal
Utah- Laramie
Wyoming
United States