Common blue mud dauber

Description

Chalybion californicum is a species of Hymenoptera first described by De Saussure in 1867. Chalybion californicum belongs to the genus Chalybion, and the family Sphecidae. Chalybion is a genus of blue mud dauber wasps in the family Sphecidae. Chalybion species nest in a wide range of natural and artificial cavities such as holes in wood, walls, plant stems, etc., where they typically provision their brood cells with paralyzed spiders. They also reuse old nests of other wasps like Trypoxylon and Sceliphron.