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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. [1]
Chalybion californicum, the common blue mud dauber of North America, is a metallic blue species of mud dauber wasp first described by Henri Louis Frédéric de Saussure in 1867. It is not normally aggressive towards humans. [2] It is similar in shape and colour to the steel-blue cricket hunter (Chlorion aerarium).
The blue mud dauber species Chalybion californicum, another sphecid, builds mud nests, but occasionally refurbishes the abandoned nests of other species; it preys primarily on spiders. [2] The two species commonly occupy the same barns, porches, or other nest sites.
Blue mud daubers are noted predators of black widow and brown widow spiders. As many as 15 to 20 spiders may be packed into each egg chamber of a mud dauber’s nest.
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The organ pipe mud dauber ranges from Southeastern Canada to the Eastern United States [1] Mud daubers use tree holes or the underside of bridges to construct their nests out of mud. Nest site choice usually depends on three specifications - a smooth, vertical surface with ample shade and rainfall protection, a source of mud nearby, and an ...
A Sphecidae wasp, probably Sceliphron caementarium, investigates two squash bugs, but doesn’t attempt capture to provision its nest. The old digger wasp family Sphecidae was paraphyletic and has been broken up. Only the following subfamilies remain in the new family Sphecidae (sensu stricto) which is a monophyletic clade. [1]
Sceliphron caementarium, also known as the yellow-legged mud-dauber wasp, black-and-yellow mud dauber (within the US), or black-waisted mud-dauber (outside of the US), is a species of sphecid wasp. There are some 30 other species of Sceliphron that occur throughout the world, though in appearance and habits they are quite similar to S ...