Invasive Joro Spiders Are Almost Ready to Hatch: Which States Will Likely See Them?
Joro spider eggs, laid in fall, are set to hatch this spring, with sightings reported in at least nine national parks as the invasive species spreads across the Southeast US.
- On Friday, the National Park Service and the U.S. Fish and Wildlife Service reported Joro spider sightings at Chickamauga and Chattanooga National Military Park, with confirmed presence in at least eight other parks via iNaturalist data.
- Native to East Asia, the invasive Joro spider was first recorded in Georgia in 2014 and has since expanded across the United States by hitchhiking on vehicles; females lay egg masses containing about 500 eggs.
- Research shows the Joro is among the "shyest" spiders ever documented, measuring around 0.7 to 1.2 inches with a leg span up to 4 inches, and experts state their venom is weak, causing no medical importance.
- Georgia-Based agricultural entomologist Gabrielle LaTora said disrupting webs is a "short-term solution," noting that local control by residents is "probably not going to have much of an impact on the overall spread."
- Working with partners including the National Invasive Species Council, the Department of the Interior focuses on "preventing introductions, detecting new infestations early and responding quickly to limit spread" across the nation's parks.
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Invasive Joro spiders are almost ready to hatch: Massachusetts will likely see them
Joro spiders (Trichonephila clavate) are getting ready to hatch across parts of the Southeastern United States — and likely well beyond, if previous years are any indication.
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