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Project Noah Nature School
Pseudomasaris sp.
Abandoned mud nest of a solitary pollen wasp, probably Pseudomasaris vespoides. Reminds me of the cylinder of a revolver, and about the same size.
Arid regions of the American west. This specimen was found at Catalina State Park in Oro Valley, Arizona.
Pollen wasps are related to yellowjackets, paper wasps, potter wasps, and mason wasps. They are solitary, each female making her own nest. Here's more, including images of the wasps themselves: http://bugeric.blogspot.com/2011/11/wasp...
Spotted on Mar 30, 2010
Submitted on Dec 2, 2012
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