invasive Joro spiders to spread across the eastern U.S. this summer

Joro spider, an invasive species originating from East Asia, will increasingly appear in New York, New Jersey, and other eastern U.S. states as the summer season approaches. The largest female Joro spiders measure up to 4 inches in length and have legs up to 8 inches long. They are roughly the size of a human hand. Females are known for their bright yellow bodies, while males are usually smaller and brown.

As reported by "The Washington Post," Joro spiders have been in the United States for at least a decade. They first appeared in Georgia after likely arriving in the U.S. in a shipping container. A recent study conducted by David Coyle, a scientist at Clemson University, showed that these arachnids will be able to inhabit most of the eastern United States this summer.

Unlike other large species, Joro spiders are adapted to the climate of the eastern coast of the USA, which is similar to that of Japan, where they primarily originate. According to research conducted in February by the University of Georgia (UGA), Joro spiders also thrive in urban environments. "Flying" on their threads over busy roads, these invertebrates will continue to spread and inhabit cities.

Joro spiders are not dangerous to humans or pets. Despite their "fearsome" appearance, these arachnids are shy and prefer to build their webs outdoors rather than in human homes. People who have been bitten by Joro spiders—which is a rare occurrence—have reported mild symptoms, according to a 2022 report by "The NY Post," from Richard Hoebeke, associate curator at the UGA arthropod collection. One reported bite caused swelling, a slight fever, and redness, possibly due to an allergic reaction.

Source: theguardian.com