Bug Identifier
Brown widow spider egg sac
Community identification

Brown widow spider egg sac

Latrodectus geometricus

Order & Family
Araneae: Theridiidae
Size
8 mm to 12 mm in diameter (egg sac)
See this bug in the Encyclopedia

Natural Habitat

Commonly found in sheltered areas such as porch furniture, eaves, under handrails, and in cluttered garages or sheds.

Diet & Feeding

Spiderlings and adults eat small insects like flies, mosquitoes, and beetles.

Behavior Patterns

The egg sac is distinctively 'spiky' with silk tufts. One sac can contain 120-150 eggs. The spiders are generally timid and prefer to retreat.

Risks & Benefits

While venomous, they are less aggressive and their bite is typically less severe than a black widow's; they benefit the ecosystem by controlling pest insect populations.