Crab Spider

Scientific Name: Thomisidae

Order & Family: Araneae, Thomisidae

Size: Typically 2-10 mm for the body, with legs extending further.

Crab Spider

Natural Habitat

Various habitats including gardens, fields, forests, and sometimes indoors. Many species are ambush predators on flowers or foliage.

Diet & Feeding

Predatory, primarily feeding on insects such as bees, flies, and butterflies, which they ambush.

Behavior Patterns

Crab spiders are known for their crab-like appearance and ability to walk sideways or backward. They are ambush predators and do not typically build webs for catching prey, instead waiting on flowers or leaves to surprise their prey. Some species can change color to match their surroundings.

Risks & Benefits

Generally harmless to humans; their venom is not considered medically significant. They are beneficial as natural pest control, helping to regulate insect populations in gardens and agricultural areas.

Identified on: 9/4/2025