What's That Bug? does not endorse extermination

Subject: mud nests or cocoons?
Location: Grand Junction Colorado
April 13, 2013 6:38 pm
We found these under a wood deck. Somewhat similar to ’earth’/mud nests made by wasps, but I am pretty sure that yellowjacket wasps are not what made these. They are about 1” long.
Signature: shreddly phreddly

Mud Wasp Nest

Mud Wasp Nest

Dear shreddly phreddly,
We agree that this is a Wasp Nest, but it is not a Yellowjacket Nest.  Yellowjackets are social wasps that build a paper nest.  The mud nest builders are solitary wasps.  Wasps in several different families construct nests of mud that are provisioned with food for the developing larvae.  Breaking one of the cells to view the contents might help to identify the nest builder more specifically.

Mud Wasp Nest

Mud Wasp Nest

Daniel:
thanks!  yeah, we were sorta freaktout when we turned the deck over and saw that assemblage (a dozen, i think).  It did look somewhat like something out of a science fixion or horror movie!
Jay K (shredd Phredd)

 

What's That Bug? does not endorse extermination
Location: Grand Junction, Colorado
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