A New Southern Resident
The Joro spider first appeared in Georgia around 2013, likely arriving inside a shipping container. Since then, it has rapidly spread through trees, gardens, and backyards across the Southeast. While their large size and bright yellow-and-black coloring might seem intimidating, experts stress that Joro spiders are harmless to humans and pets.
Why Researchers Are Paying Attention
Scientists at Georgia Gwinnett College are taking a closer look at this newcomer to see what makes it so successful. Biology professor James Russell and his team are studying how the Joro interacts with native species and what natural predators, if any, help keep it under control. Their research could be key to balancing ecosystems as this spider continues to expand its range.
One fascinating discovery from Russell’s lab involves a microscopic bacterium called Wolbachia. This bacterium can manipulate reproduction in many arthropods, including insects and spiders — sometimes even turning males into females or affecting offspring survival. Researchers hope learning more about this relationship could one day help manage Joro spider populations naturally.
Should Homeowners Worry About Joro Spiders?
Despite their size and web-building habits, Joro spiders pose no danger. As Professor Russell told CBS News, “They’re harmless. They’re not going to hurt you.” In fact, many residents have opted to leave them alone, noting that they don’t seem to harm pollinators like bees or butterflies.
Keeping Your Home Comfortable
Even though Joro spiders aren’t dangerous, a few too many around your home can be unnerving. If you’d rather not share your space with these oversized web-weavers or any other pests for that matter, got bugs? can help you keep your property pest-free. Contact us today to learn more about our home pest control services!
