Yellow Sac Spider

Natural Habitat

Gardens, low foliage, and frequently inside homes along walls, ceilings, and window frames.

Diet & Feeding

Carnivorous; feeds on a variety of small insects and even other spiders.

Behavior Patterns

Active nocturnal hunters that do not build webs to catch prey. Instead, they build silky tube-like retreats (sacs) in protected areas to rest during the day.

Risks & Benefits

Benefits the ecosystem by controlling pest populations. While their bite can be painful and cause localized swelling or itching similar to a bee sting, they are generally not considered medically significant to healthy humans.

Identified on: 3/20/2026