Crab Spiders
Crab spiders belong to the Family Thomisidae and are named for their crab-like appearance and movements. Crab spiders have two large, strong front legs that are used to grasp prey. They scuttle sideways with their hind legs, although some species do move like other spiders.
Crab Spider
Crab spiders differ from other arachnids in a number of ways, including their feeding habits. Instead of spinning webs to catch prey, crab spiders utilize camouflage. Some crab spiders resemble bird droppings, while others look like fruits, leaves or flowers. Some crab spiders are capable of changing colors entirely.
When prey approaches, the crab spider attacks and administers a poisonous bite. Crab spider venom is potent enough to render large insects immobile. It does not affect humans, although on rare occasions, an individual will experience an allergic reaction to spider venom.
Crab spiders produce eggs within a few weeks after mating. These eggs are deposited into two silken egg sacs, which are joined at the center. However, crab spiders are unlike other spiders in that their eggs are not housed within a web. Females commonly remain near egg sacs in order to protect their young from predators. Hatching time depends on environmental conditions. After spiderlings emerge, they resemble adults. These small spiders undergo a series of molts before becoming mature and fertile. Most crab spider species produce only one generation each year. Their life spans also rarely extend beyond one year.
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