Insects of Alberta - Bumble Bees page 3 

 

 

 

 

Bombus sylvicola

 

Bombus ternarius
(Tricoloured Bumble Bee)

 

Bombus (Psithyrus) sp.
(Cuckoo Bumble Bee)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   

 

 

 

 

 

 

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