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Joro Spider's Rapid Spread Sparks Ecosystem Debate

10/1/2025

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Summary

Story summary

Joro spider is spreading across the southeastern United States, first documented in Georgia in 2013.
Not dangerous to humans or pets; a bite is mosquito-like.
Females lay over 100 eggs, driving rapid population growth.
Debate exists about whether they are invasive or a new part of the ecosystem.
Some scientists see pest-control benefits and researchers study effects on native species.

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Story summary

Joro spider is spreading across the southeastern United States, first documented in Georgia in 2013.
Not dangerous to humans or pets; a bite is mosquito-like.
Females lay over 100 eggs, driving rapid population growth.
Debate exists about whether they are invasive or a new part of the ecosystem.
Some scientists see pest-control benefits and researchers study effects on native species.