Remember Joro Spiders? Here’s When They’ll Get To Illinois

We were told it would only be a matter of time...but how much time before they're here in the Land of Lincoln?

If you’ve seen headlines about giant, brightly colored “flying” spiders spreading across the US, you’re not alone.

And if you’re wondering whether Illinois is next, you’re definitely not the only one asking.

The spider in question is the Joro spider, an invasive species originally from East Asia. First discovered in Georgia around 2013, it has steadily expanded across the southeastern United States and beyond.

So, how long before we see one wearing a Chicago Bears cap?

Illinois Has Been One Of The States Mentioned When The Discussion Turns To Where The Joro Spiders Are Heading, So Are They On Their Way Here?

The honest answer is... maybe, but not necessarily anytime soon.

Right now, established populations are mostly concentrated in the Southeast, including Georgia, the Carolinas, and Tennessee, with newer sightings popping up as far north as Maryland and Pennsylvania.

Experts say it’s likely only a matter of time before they continue spreading, thanks in part to a strange ability called “ballooning,” where baby spiders ride silk strands on the wind to travel long distances.

That said, scientists caution that predicting exactly where they’ll settle next is tricky. While they can tolerate colder temperatures better than expected, their spread into the Midwest (including Illinois) is still uncertain and could take years, or it may only happen in isolated cases.

Okay, Let's Assume That The Joro Spiders Make It To Illinois...What Will Life Be Like When They Do?

First, take a breath. They’re not the nightmare fuel the headlines sometimes suggest.

Yes, Joro spiders are big. Females can reach several inches across, with bright yellow and blue markings and the ability to spin massive golden webs that can stretch several feet wide. They’re most noticeable in late summer and early fall, when those webs seem to appear everywhere.

But here’s the key piece of information you'll need: they’re essentially harmless to humans. Their venom is mild, bites are rare, and experts say they’re shy and reluctant to interact with people.

In fact, they may even have a small upside. They eat a wide range of insects, including pests like stink bugs and other invasive species.

So while the idea of giant spiders drifting through the air sounds like something out of a horror movie, the reality is much less dramatic, and it's something we won't have to deal with for the time being.