Bug Identifier
Southern Black Widow
Community identification

Southern Black Widow

Latrodectus mactans

Order & Family
Order: Araneae, Family: Theridiidae (Cobweb Spiders)
Size
Females typically range from 13-35 mm (0.5-1.4 inches) including leg span, with the body being about 8-15 mm (0.3-0.6 inches). Males are significantly smaller, about half the size of females.
See this bug in the Encyclopedia

Natural Habitat

Typically found in outdoor, undisturbed areas like woodpiles, sheds, garages, under rocks, in basements, and other dark corners. They prefer dry, temperate climates.

Diet & Feeding

Primarily feed on small insects such as flies, mosquitoes, grasshoppers, beetles, and caterpillars that get caught in their web. They paralyze their prey with venom before consuming them.

Behavior Patterns

Female black widows are reclusive and typically hide in dark, undisturbed areas. They are nocturnal and build irregular, messy webs, often near the ground. They are known for their sexual cannibalism, where the female sometimes eats the male after mating, though this is not always the case in the wild.

Risks & Benefits

Risk: The bite of a female black widow spider is venomous and can cause a condition called latrodectism, characterized by muscle pain, cramps, nausea, and sweating. While rarely fatal, it can be severe, especially for children, the elderly, or those with compromised immune systems. Benefits: Black widow spiders help control insect populations by preying on various common pests.