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Invasive Joro Spiders Confirmed in Pennsylvania for the First Time

The brightly colored, ballooning spiders, native to East Asia, have spread from Georgia and are now verified in Bucks County.

  • Six Joro spiders were spotted and confirmed in Bucks County, Pennsylvania on September 5, according to Joro Watch.
  • Joro spiders, known for their large size and colorful appearance, were first identified in the U.S. in Georgia in 2014.
  • These spiders can travel by 'ballooning,' using their silk to catch the wind and move to new locations.
  • Despite their intimidating look, Joro spiders are not dangerous to humans or pets and are considered shy.
  • Researchers believe the Joro spider could spread throughout much of the eastern U.S. due to its ability to survive cold temperatures.
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