Woodlouse Hunter spider

Scientific Name: Dysdera crocata

Order & Family: Order Araneae, Family Dysderidae

Size: 10 to 15 mm (body length, excluding legs)

Woodlouse Hunter spider

Natural Habitat

Found under logs, rocks, bricks, and in damp places like leaf litter or basements and gardens, particularly where its prey (pillbugs) is abundant.

Diet & Feeding

Primarily woodlice (sowbugs and pillbugs), though it may occasionally eat other small invertebrates.

Behavior Patterns

Nocturnal hunter that does not build a web to catch prey; instead, it uses its large, powerful chelicerae (fangs) to pierce the tough exoskeleton of roly-polies. They spend the day in silk retreats.

Risks & Benefits

Benefits the ecosystem by controlling pillbug populations. While its large fangs can pierce human skin and cause a painful bite similar to a bee sting, its venom is not medically significant to humans.

Identified on: 6/29/2026