Brown House Spider (False Widow)

Scientific Name: Steatoda grossa

Order & Family: Araneae, Theridiidae

Size: Body length typically ranges from 6 to 11 mm (0.24 to 0.43 inches) for females; males are smaller.

Brown House Spider (False Widow)

Natural Habitat

Commonly found indoors in houses, garages, and sheds, often in dark, sheltered areas like corners, under furniture, or in closets.

Diet & Feeding

Primarily eats insects and other spiders. They spin tangled cobwebs to catch prey.

Behavior Patterns

They are nocturnal and generally shy, non-aggressive spiders that spend most of their time in their webs. They go through several molts during their lifespan, which is up to 6 years for females.

Risks & Benefits

Generally beneficial as they control household pests. Their bite is not usually medically significant for humans but can cause localized pain, swelling, and mild malaise similar to a bee sting.

Identified on: 5/11/2026