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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 sans Anthophila – Apoid Wasps » Thread-waisted Wasps (Sphecidae) » Sceliphrinae » Mud-dauber Wasps (Sceliphrini) » Blue Mud-dauber Wasps (Chalybion) » Common Blue Mud-dauber Wasp (Chalybion californicum)
Photo#1093944
Blue Mud Wasp - Chalybion californicum - female
Copyright © 2015 Jim Moore

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
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Contributed by Jim Moore on 1 July, 2015 - 1:30pm
Last updated 6 July, 2015 - 7:40pm

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:
… Bob Biagi, 4 July, 2015 - 11:17pm login or register to post comments

 
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.
… Jim Moore, 6 July, 2015 - 8:01pm login or register to post comments

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