Around Maryland, Sci-Tech

Parachuting Joro spider spotted in Maryland, spreading throughout East Coast [VIDEO]

BALTIMORE, MD—An invasive species of spider that’s spreading throughout the East Coast has been spotted in Maryland.

Joro spiders are native to Japan and Asian countries  but have been spotted in states along the East Coast. Sightings of these critters have recently been confirmed in Maryland as well.

The Joro spider first appeared in Georgia around 2013 and new research from the University of Georgia suggests the invasive arachnids could spread through most of the Eastern Seaboard.

Joros don’t appear to have much of an effect on local food webs or ecosystems, said Andy Davis, corresponding author of the study and a research scientist in the Odum School of Ecology. They may even serve as an additional food source for native predators like birds.

“People should try to learn to live with them,” he said. “If they’re literally in your way, I can see taking a web down and moving them to the side, but they’re just going to be back next year.”

“The way I see it, there’s no point in excess cruelty where it’s not needed,” added Benjamin Frick, co-author of the study and an undergraduate researcher in the School of Ecology. “You have people with saltwater guns shooting them out of the trees and things like that, and that’s really just unnecessary.”

A recent Clemson study shows that the Joro spider is here to stay and spreading fast.



The Joro spider’s legs span three inches, about the diameter of a soup can.

In addition to the spiders’ startling size – female members of the species are as big or bigger than the Carolina wolf spider, the largest native spider in the US – they’re also eye-catching for their yellow and blue coloration, according to Yahoo News.

Native to Korea, China, Taiwan, and Japan, researchers believe the spiders probably hitched a ride to Georgia on a cargo ship.

Luckily, the spiders are pretty much harmless to humans and most pets. Scientists say the creature’s bite feels like a tiny pinch, and that while they are venomous, it would pose no threat to a human who gets bitten.  Its venom is pretty much harmless to any humans or pets who get bitten.

The spider uses its web as a balloon or a parachute to sail on the wind. Using this method the spiders can actually travel between 50 to 100 miles, according to Yahoo.

The Joro spider has about double the metabolism of its relative, has a 77 percent higher heart rate, and can survive a brief freeze that kills off many of its cousins. These findings mean the Joro spider’s body functions better than its relative in a cold environment – and that means the Joros can likely exist beyond the borders of the Southeast.

More information on the Joro spider can be found in the video below.

Photo via University of Georgia


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