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Giant Spider Invasion Alert In The U.S.

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The alert issued has generated fear among residents.


The United States is on alert for an invasion of giant spiders. This was announced by the Royal Entomolical Society, which predicts that this invasion, which they called "spider rain", will increase by the spring of 2022. These are the Joro spiders, belonging to the arachnid species nephila and coming from some Asian countries, such as Japan, Taiwan, China and Korea. As for their appearance, they are black with yellow spots, with very long legs, and can be as large as the palm of a hand. The news generated a lot of fear among citizens, especially because of the large size of these spiders, although they do not pose any risk to humans. Although they have a neurotoxic venom very similar to that of the black widow, their fangs are not strong enough to penetrate the skin. Likewise, they pose no risk to pets. Joro spiders are believed to have been brought to the United States by the movement of humans, i.e., by people traveling on boats or arriving on cargo ships.

They were first identified in the U.S. in the state of Georgia and, over the years, they increasingly multiplied in different areas around them. "People should try to learn to live with them. If they're literally in your way, you can push their web aside, but they're just going to come back next year," said scientist Andy Davis, who is leading research on Joro spiders at Georgia's Odum School of Ecology. Through these scientific studies, some similarities were found between Joro spiders and traditional nephila spiders, also known as golden silk spiders, which did not expand as much because they do not withstand cold temperatures. Some of the points on which Joro spiders differ from them is that they have "a metabolism twice as high, a heart rate 77% higher at low temperatures" and that they survive "74% of the time in sub-zero temperatures".

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