Crab Spider

Scientific Name: Family Thomisidae

Order & Family: Order Araneae, Family Thomisidae

Size: 4 mm to 10 mm (0.15 to 0.4 inches), depending on species and sex.

Crab Spider

Natural Habitat

Found on flowers, leaves, under bark, or on the ground; often found indoors if accidentally brought in on plants.

Diet & Feeding

Carnivorous; they eat a variety of insects such as bees, flies, and butterflies using an ambush strategy.

Behavior Patterns

They do not spin webs to catch prey but instead sit motionless and wait to ambush passing insects. Some species can slowly change color to match their surroundings.

Risks & Benefits

They are generally harmless to humans and are reluctant to bite. They benefit the ecosystem by controlling insect populations.

Identified on: 5/3/2026