Climaciella brunnea Larvae

David Cappaert, Michigan State University, Bugwood.orgThe C. brunnea larvae are spider-egg predators (Redborg et. al 2000). The adult C. brunnea come in from the fields where they live and lay their eggs on the forest floor or low laying plants. When the eggs hatch the larvae attract a spider by standing upright and swaying back and forth (Batra 1972). When the spider comes near they then climb aboard the spider and wait until it lay its eggs. The larvae then enter the spider's egg sack while it is being constructed. The spider could be the host for a long to short period of time. The larvae will even overwinter on the spiders back if it is necessary while waiting until the spider constructs its egg sack. If the larvae board a male spider the larvae will wait until copulation and then transfer over to the female spiders back (Guarisco 1998). Once inside the sealed egg sack the larvae will eat the eggs and then spin its own cocoon where it develops into a pupa (Hoffman et. al 1992).
Photo Courtesy of Tom Murray

Climaciella brunnea Mature Adult

The adult C. brunnea live in fields on flowers of thistle and other plants. They live in regions all over ranging from southern Canada, to the central and western regions of the United States, Mexico, and Central America. The adult C. brunnea prefer the plants where the soil is moist as opposed to the plants that live in dryer regions (Batra 1972). Below is a link of where the C. brunnea are found throughout North America, the link states that it may not represent the entire distribution, but it gives a good idea of where they can be found.  http://eol.org/pages/418523/maps
Below is another link of which states the C. brunnea are found in.
Johnny N. Dell, Bugwood.org


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