Latrodectus geometricus
Latrodectus • Theridiidae
A tan, mottled widow with a striking orange hourglass — a hardy, low-maintenance cobweb-builder, but one for experienced, cautious keepers only. Its venom is the same type as the black widow's (latrodectism) and is medically significant, so it requires escape-proof housing and absolutely no handling; in practice brown widow bites tend to be milder and more localized than black widow bites because far less venom is delivered, but it must still be treated with full respect. Give a tall enclosure with anchor points for its irregular web, room temperature, occasional misting for water, and crickets or flies. Shy and reluctant to bite. Solitary.
Temperature
70-85°F
Humidity
50-65%
Prey size: flying insects, crickets
Type
cobweb (web)
Adult Size
female 7-10 mm, male ~4 mm
Growth Rate
fast
Native Region
Cosmopolitan in warm regions; widespread in the southern USA
Temperament
shy, reclusive; venom is MEDICALLY SIGNIFICANT — no handling
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