Running Crab Spider

Scientific Name: Philodromus sp.

Order & Family: Araneae: Philodromidae

Size: 3 to 10 mm (body length)

Running Crab Spider

Natural Habitat

Found on various vegetation, tree trunks, and the exterior walls of buildings.

Diet & Feeding

Carnivorous; hunts small insects and other arthropods by chasing them down rather than using a web.

Behavior Patterns

Extremely fast runners that move in an erratic, crab-like fashion. They are active hunters that often flatten themselves against surfaces to remain camouflaged.

Risks & Benefits

Harmless to humans; they are beneficial to the ecosystem as they help control populations of pests like flies and mosquitoes.

Identified on: 5/24/2026