Xysticus Crab Spiders
All crab spiders generally resemble crabs: Their legs extend outward from the sides, and they can walk in any direction. There are several species of crab spiders in the genus Xysticus in Missouri. Generally larger than flower crab spiders, they are usually dull gray and brown and have brown, rusty, tan, white or yellow markings, especially on the abdomen, and they often have a midstripe on top of the carapace (head). The first pair of legs are large and powerful, as in flower crab spiders, and are covered with many tiny spines.