Experts warn that Joro spiders, native to East Asia but now spreading rapidly across the southeastern U.S., could soon reach Pennsylvania, New Jersey and Delaware. These large, colorful arachnids are considered invasive but harmless to humans and pets.
, experts warned that Joro spiders could start showing up in Pennsylvania , New Jersey and Delaware this summer, spreading up from the southeastern U.S., where they have been proliferating.Sign up for NBC Philadelphia's News Headlines newsletter.Someone spotted the group of a half dozen or so colorful arachnids in the yard of a home in Warminster, Bucks County, on Sept.
"Barring some unforeseen circumstance, we expect the range of these things to continue expanding, likely to the north, and we’ve already seen that with some populations in Maryland."Adding to nightmares, the spiders are light enough to travel through the air by a process called"ballooning," making it even easier for them to spread.
"In their native range, Jorō spiders can be found in relatively cold areas – the average January temperature of northern Honshu, Japan is 25–32 °F, similar to most of Pennsylvania," the Penn State article said."So it is likely that they will be able to spread throughout eastern North America at least as far north as Pennsylvania and possibly further in warmer, coastal areas.
Joro Spiders Invasive Species Arachnids Pennsylvania Delaware New Jersey
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