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Blue Mud Dauber

Chalybion californicum


The blue mud dauber is a metallic blue species of mud dauber wasp that preys primarily on black widow spiders.[2] It does not build a nest, but uses nests abandoned by other mud dauber wasps. Like other mud daubers, it is rarely aggressive.[2] (wikipedia)

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Steve Lenz
Spotted by
Steve Lenz

Arlington, Oregon, USA

Spotted on Oct 2, 2010
Submitted on Sep 21, 2012

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