Ground Crab Spider

Scientific Name: Xysticus species

Order & Family: Order Araneae, Family Thomisidae

Size: 3 to 10 mm (body length), with females being larger than males.

Ground Crab Spider

Natural Habitat

Found on the ground, under leaf litter, rocks, and logs, or on low vegetation and garden plants.

Diet & Feeding

Carnivorous; they are ambush predators that feed on small insects like bees, flies, and other spiders.

Behavior Patterns

Unlike many spiders, they do not spin webs to catch prey. Instead, they rely on camouflage and wait patiently to ambush passing insects. They move sideways or backward, similar to a crab.

Risks & Benefits

Benefits the ecosystem by controlling pest insect populations. They are generally harmless to humans; while they can bite if handled, their venom is not considered medically significant for people.

Identified on: 4/23/2026