Bug Identifier
Yellow Sac Spider
Community identification

Yellow Sac Spider

Cheiracanthium mildei

Order & Family
Araneae, Cheiracanthiidae
Size
5 to 10 mm in body length
See this bug in the Encyclopedia

Natural Habitat

Gardens, shrubs, and frequently found inside residential homes near ceilings and corners.

Diet & Feeding

Carnivorous; hunts small insects and other spiders actively at night.

Behavior Patterns

Nocturnal hunters that do not build webs to catch prey; instead, they build silk retreats (sac-like structures) for resting during the day.

Risks & Benefits

Benefits the ecosystem by controlling pest populations. Biting is rare but can cause localized pain, swelling, and itching similar to a bee sting.