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Photo#1093944
Blue Mud Wasp - Chalybion californicum - female

Blue Mud Wasp - Chalybion californicum - Female
In Westwood - elevation 5100ft, Lassen County, California, USA
June 23, 2012
Size: Body length 19mm
Looking for a "U-shaped patch of sericeous pubescence" on abdominal sternite V; please see species page at Discover Life here; would indicate a female. Also please see comments on ventral view of this specimen.

Images of this individual: tag all
Blue Mud Wasp - Chalybion californicum - female Blue Mud Wasp - Chalybion californicum - female Blue Mud Wasp - Chalybion californicum - female Blue Mud Wasp - Chalybion californicum - female Blue Mud Wasp - Chalybion californicum - female Blue Mud Wasp - Chalybion californicum - female Blue Mud Wasp - Chalybion californicum - female

Female!
Jim, thanks again for loading this image. I can assure you that your wasp is a female. Have a look at the male's images:

 
Alright, it's a lady wasp,!
Thanks Bob.

And other folks - please see Bob's excellent comments on the differences between the males and females via his linked thumbnail photo.

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