Bug Identifier
Common House Spider
Community identification

Common House Spider

Parasteatoda tepidariorum

Order & Family
Araneae: Theridiidae
Size
3 to 6 mm for body length, with a large spherical abdomen that can expand significantly.
See this bug in the Encyclopedia

Natural Habitat

Found globally in or near man-made structures, particularly in dark corners, under eaves, and in sheds or basements.

Diet & Feeding

Mainly small insects and other invertebrates, which they trap in tangled, three-dimensional webs.

Behavior Patterns

They are cobweb spiders that build messy, irregular webs. They are typically shy and will retreat or drop from their web if disturbed.

Risks & Benefits

They are considered harmless to humans and are not aggressive. They provide significant ecological benefits by consuming indoor pests like flies and mosquitoes.