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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » Aculeata - Ants, Bees and Stinging Wasps » Apoidea (clade Anthophila) - Bees » Cuckoo, Carpenter, Digger, Bumble, and Honey Bees (Apidae) » Honey, Bumble, Longhorn, Orchid, and Digger Bees (Apinae) » Bumble Bees (Bombini) » Bumble Bees (Bombus) » Subgenus Psithyrus (Bombus Subgenus Psithyrus) » Indiscriminate Cuckoo Bumble Bee (Bombus insularis)
Photo#406860
Bombus bifarius or occidentalis? - Bombus insularis - female
Copyright © 2010 Fred Bentler

Bombus bifarius or occidentalis? - Bombus insularis - Female
Lake Roosevelt, Ferry County, Washington, USA
May 30, 2010
I took this to be B. bifarius as they appear to be in the neighborhood, but maybe B. occidentalis. An ID would be appreciated. 1 of 2

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Bombus bifarius or occidentalis? - Bombus insularis - female Bombus bifarius or occidentalis? 2 of 2 - Bombus insularis - female
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Contributed by Fred Bentler on 6 June, 2010 - 9:32pm
Last updated 6 June, 2010 - 10:37pm

Moved
Moved from ID Request.
… John S. Ascher, 6 June, 2010 - 10:37pm login or register to post comments

B. insularis
Parasite
… John S. Ascher, 6 June, 2010 - 10:36pm login or register to post comments

 
Excellent!
This looked like one well-fed parasite-- surprisingly large. I suppose the size of the host doesn't matter if they're delivering food though. Any idea whether B. insularis invade Bombus fervidus or B. melanopygus nests though?
… Fred Bentler, 6 June, 2010 - 11:45pm login or register to post comments

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