Bug Identifier
Cellar Spider
Community identification

Cellar Spider

Pholcus phalangioides

Order & Family
Araneae / Pholcidae
Size
Body length 7–9 mm (0.28–0.35 in); legs can be up to 50 mm (2 in) long.
See this bug in the Encyclopedia

Natural Habitat

Dark, damp, or secluded areas such as basements, cellars, caves, and corners of ceilings in homes.

Diet & Feeding

Mainly insects and other spiders; they are known to invade other spiders' webs to eat them.

Behavior Patterns

They build messy, irregular webs and exhibit a 'vibrating' behavior when disturbed, shaking their web rapidly to blur their silhouette from predators.

Risks & Benefits

Benefits the ecosystem by controlling household pests; they are harmless to humans as their fangs are generally unable to penetrate human skin and their venom is not medically significant.