Joro Spiders in New York City

Fox 5 reporting joro spiders are coming to NYC

New Yorkers, get ready for a new neighbor! The Joro spider, a fascinating and colorful arachnid native to East Asia, has been making its way across the southeastern United States, and it’s expected to arrive in New York this summer. With their vibrant colors and impressive webs, they’re hard to miss. But what exactly are these spiders, and should we be worried? Let’s dive in and get to know our new eight-legged residents.

Meet the Joro Spider

Scientifically known as Trichonephila clavata, the Joro spider is part of the orb-weaver family Araneidae. The females are the real showstoppers, sporting a dazzling mix of yellow, blue-green, and black markings on their bodies and legs. The males, in comparison, are smaller and less flamboyant. These spiders are known for spinning massive, intricate webs several feet in diameter.

Joro spiders live for about a year, with a single generation produced annually. The cycle starts with egg sacs, from which spiderlings emerge and grow throughout the warm months.

Joro Spiders in New York City

Originally from East Asia, the Joro spider made its American debut in Georgia in 2014. Since then, it’s been rapidly spreading across the Southeast, thanks to its unique ballooning ability. This is where spiderlings release silk threads that catch the wind, allowing them to travel great distances.

New York Tree Species: In New York, Joro spiders are likely to be found near or in various tree species commonly found in urban and suburban areas. Some examples include:

  • Oak trees (Red Oak, White Oak)
  • Maple trees (Sugar Maple, Norway Maple)
  • Birch trees (Gray Birch, River Birch)
  • Beech trees (American Beech)
  • Sycamore trees
  • Spruce trees (Norway Spruce)
  • These trees give Joro spiders the height and structure they need to build their webs. Joro spiders may also be found on buildings, fences, and other structures in New York City and other parts of the state.
Joro spiders can be as big as your hand

Impact and Coexistence

So, what does the arrival of Joro spiders mean for our ecosystem and us? These spiders are known to be voracious predators of insects, including pests like mosquitoes and stink bugs. This could be a welcome benefit, especially during the summer when these pests peak.

Researchers are still studying their long-term ecological impact, including potential competition with native spider species. But so far, there’s no evidence to suggest they pose a significant threat to our local environment.

And as for us humans, no need to worry. Joro spiders are venomous, but their bite is no worse than a bee sting for most people. Just admire them from afar and let them carry on their insect-catching duties.


The Joro spider’s arrival in New York marks an interesting new chapter in our city’s biodiversity. While their large size and bright colors might be initially startling, remember that these spiders are more helpful than harmful. So, watch for their stunning webs this summer and welcome our new eight-legged neighbors to the Big Apple!

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