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Photo#584391
California Yellowjacket - Vespula sulphurea

California Yellowjacket - Vespula sulphurea
Mount Diablo State Park, Contra Costa County, California, USA
August 14, 2011

Moved
Moved from ID Request.

Very nice find :)
These are V. sulphurea

Is it plain water that they are drinking? Thanks for sharing this excellent shot

 
Plain water
Thanks for the id. Yes, it is plain water from a creek that flows over a fire road at this point.

seems to match key
here: http://bugguide.net/node/view/35661
if so, nice find!

But wait for experts.

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