Herpyllus ecclesiasticus (Eastern Parson Spider)

Summary

The "Eastern Parson Spider," Herpyllus ecclesiasticus, is a hunting spider that does not spin a web to capture prey. Common east of the Rocky Mountains, it sometimes strays indoors in the course of prowling for a meal or seeking a mate. Found mostly in wooded habitats, it hides under tree bark, debris, stones, boards, and other objects by day. This species climbs well, and may turn up at outdoor lights at night, looking for insects attracted there. Mature individuals may be found at almost any time of year. It is known to hibernate in a silken retreat beneath loose bark on trees. This is one of our most familiar spiders. It gets its common name from the black and white color pattern reminiscent of the garb worn by old-time clergymen. Specimens that enter homes may seek refuge in clothing, shoes, and other objects. The spider may bite if trapped, but the effect of a bite depends mostly on the victim’s immune response. Rarely do symptoms exceed mild inflammation.