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Photo#2167536
Tiny fly on bumble bee pollen ball - Bombus vancouverensis

Tiny fly on bumble bee pollen ball - Bombus vancouverensis
Klamath National Forest, Siskiyou County, California, USA
July 28, 2022
Size: 1/4 inch
This tiny fly was feeding on the pollen ball held in the corbicula of a Bombus bifarius. Could this fly be a bumble bee pollen ball specialist?

Images of this individual: tag all
Tiny fly on bumble bee pollen ball - Bombus vancouverensis Tiny fly on bumble bee pollen ball - Bombus vancouverensis

tiny fly on bumble bee pollen ball
Thanks for the confirmation of the bumble bee ID (B. vancouverensis = B. bifarius), but my ID request was for the fly on the pollen ball, not the bee.

Moved
Moved from ID Request.

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