Spiders the size of a baby’s hand that can “fly” have been spotted along the East Coast, and scientists expect their spread to continue. These arachnids, known as Joro spiders, are causing a stir among residents and scientists alike.
What is a Joro Spider?
Joro spiders are notable for their massive webs, leg spans of up to 4 inches, and vibrant yellow and black coloration. Despite their intimidating appearance, they are fairly docile and do not pose a threat to humans or pets, according to invasive species expert David Coyle.
Where are Joro Spiders Found?
Originally native to Japan and Asia, Joro spiders have now been spotted in several U.S. states, including Georgia, Tennessee, and the Carolinas. Sightings have even been confirmed as far north as Maryland. Earlier this year, New Jersey Pest Control warned residents about the impending presence of the spiders in the state. An ecologist also noted that it is only a matter of time before these spiders appear in New York City.
Joro spiders have a unique ability to “fly” by parachuting through the air using wind currents. This allows them to travel up to 100 miles at a time. This characteristic is one of the reasons for their rapid spread across the East Coast.
Research and Habitat Preferences
David Coyle, an assistant professor of forest health and invasive species at Clemson University, began researching Joro spiders after spotting one in his backyard three years ago. In a study published last fall, Coyle and his team found that these spiders prefer humid forest areas that mimic their native environment in Japan.
“Down here in the hot zone, they are everywhere. Everywhere,” Coyle told NewsNation. “I’ve not seen something with populations this abundant in quite some time.”
Are Joro Spiders Venomous?
While Joro spiders are venomous, their venom is reserved for the small critters caught in their webs. “They’re not dangerous to humans,” Coyle explained. “They’re super annoying because they kind of get all over everything, and they’re more than happy to put a web on your porch or your deck or your carport or your landscaping. But as far as we know, there’s not been any instances of people getting bit or pets getting bit.”
Managing the Spread
Coyle suggested that because Joro spiders are not aggressive, a simple broom can be used to sweep away the spiders and their webs. Additionally, when fully grown, Joro spiders become too heavy to “fly,” so they won’t be dropping from the sky.
With a lifespan of one year, Joro spiders reach their largest size by October, just in time for Halloween, adding an extra element of spookiness to the season.
Conclusion
The spread of Joro spiders along the East Coast highlights the impact of invasive species and the importance of understanding their behavior and habitat preferences. While these spiders may seem intimidating, their presence does not pose a significant threat to humans or pets. By staying informed and taking simple measures to manage their spread, residents can coexist with these fascinating arachnids.
