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Photo#1525651
Oregon Bombus with Large Glabrous Area on Thorax Dorsum - Bombus

Oregon Bombus with Large Glabrous Area on Thorax Dorsum - Bombus
Portland, Multnomah County, Oregon, USA
May 26, 2018
Moving lethargically on Allium sp. located at 740' on west side of Cornell Mountain in the early evening, temperature = 62 F.

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Oregon Bombus with Large Glabrous Area on Thorax Dorsum - Bombus Oregon Bombus with Large Glabrous Area on Thorax Dorsum - Bombus Oregon Bombus with Large Glabrous Area on Thorax Dorsum - Bombus

Moved

Moved
Moved from ID Request.

The glabrous area is usually
The glabrous area is usually due to excessive wear removing the hair, often when entering/exiting the nest, and is present on many older foragers. It does make ID more annoying as it removes the thorax hair color character to a greater or lesser degree, unfortunately!

 
Bombus mixtus
Thanks for your quick response! I was wondering about that; the bee seemed nearly moribund.

 
(this looks like Bombus mixtu
(this looks like Bombus mixtus to me)

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