Bug Identifier
Black Widow Spider
Community identification

Black Widow Spider

Latrodectus mactans

Order & Family
Araneae, Theridiidae
Size
Female body length: 13-34 mm (including legs), Male body length: 7-10 mm
See this bug in the Encyclopedia

Natural Habitat

Dark, secluded areas such as woodpiles, under stones, in hollow logs, garages, sheds, and basements. They prefer undisturbed locations.

Diet & Feeding

Insects and other small invertebrates caught in their web. They paralyze prey with venom.

Behavior Patterns

Nocturnal, solitary spiders that build irregular, tangled webs. Females are known for their potent venom and sometimes for consuming the male after mating, though this is not as common in the wild as often thought. They are generally shy and only bite when threatened or disturbed.

Risks & Benefits

Risks: Their venom is a neurotoxin that can cause severe pain, muscle cramps, nausea, and vomiting, especially in vulnerable individuals (children, elderly). Bites are rarely fatal. Benefits: They help control populations of various insect pests.