What Wasps Are Blue and Black?
WouterAmong the many different species of wasps found in North America, there are some that are both blue and black. These species can sting and can paralyze some smaller insects.
Blue and black wasps are usually solitary wasps. They usually live in dark areas, such as under bushes and under trees, and build nests in the ground. They are not aggressive to humans, but they can sting if they feel threatened. They are also often found near sources of water and flowers.
The female blue mud dauber wasp builds a nest in mud. They are usually located near homes or gardens. The nest is often circular and made up of mud balls. They may also be found on walls.
The male blue mud wasp is 3/8 to 1/2 inches long. Its abdomen is reddish brown. It has two yellow spots midway along its abdomen. Its wings are metallic blue. Its sting is quite painful.
Blue mud wasps are the primary predators of the black widow spider. The wasps have a stinger that immobilizes the spider and converts it into food. They are considered to be one of the most dangerous wasps in the United States. They are also known to be parasitic. Their larvae feed on live or dead roaches and crickets.
Chalybion californicum is one of the most common blue mud daubers found in North America. The wasp can be identified by its narrow petiole, blue and black color, and shiny wings. It was first described by Henri Louis Frédéric de Saussure in 1867. It is commonly found from northern Mexico to southern Canada.
