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Instead of stocking a nest cell with one or two large spiders, mud daubers cram as many as two dozen small spiders into a nest cell. To capture a spider, the wasp grabs it and stings it. The venom from the sting does not kill the spider, but paralyzes and preserves it so it can be transported and stored in the nest cell until consumed by the larva.
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.
The organ pipe mud dauber gets its name from the distinctive shape and composition of its nests. It is native to eastern North America. Organ pipe mud daubers are also an exceedingly docile species of wasp, and generally beneficial to have around, as they serve to keep spider populations down; larvae feed on living paralyzed spiders. [2]
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 ...
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Nest of mud ready to be filled with spiders. Sceliphron curvatum is 15 to 25 millimetres (0.6 to 1.0 in) long [1] and is coloured black with yellow and red ornaments. It builds nests of mud on the walls of buildings, but also very often indoors on piles of books, clothes or pieces of furniture.
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 Sphecidae are a cosmopolitan family of wasps of the suborder Apocrita that includes sand wasps, mud daubers, and other thread-waisted wasps. The name Sphecidae was formerly given to a much larger grouping of wasps. This was found to be paraphyletic, so most of the old subfamilies have been moved to the Crabronidae.