Field Guide

Missouri has several species of ground crab spiders in the genus Xysticus. They are usually dull gray or brown with brown, white, or yellow markings. They typically live under bark or on the ground in leaf litter.

The whitebanded crab spider is a small, whitish-yellow or yellowish-brown crab spider commonly found in flower heads. Often its carapace is slightly greenish, with a broad whitish-yellow midband bordered by darker, thinner sides of yellowish brown.

The goldenrod crab spider can change color from white to yellow, depending upon the blossom it's in. The female often has an orange or reddish stripe running along each side of the abdomen, extending from the front to about halfway down the side.

The heptagonal orbweaver, Gea heptagon, builds its circular webs in vegetation only a few feet off the ground. When disturbed, it drops instantly to the ground below and turns a drab brown.

Foliage flower spiders are two genera of crab spiders. They are generally smaller than other crab spiders, and their carapaces, abdomens, and legs are spiny.

Daddy longlegs, or harvestmen, are familiar Missouri animals. They are not spiders, but opilionids. Unlike spiders, they have a fused body form and lack silk and venom glands.

The filmy dome spider is one of the most abundant woodland spiders in Missouri. Although the spider is tiny, its snare web, which looks like an upside-down silk bowl, is conspicuous throughout the year.