Joro Spiders Expand Across Western North Carolina
First identified in the state in 2021, these arachnids continue their regional spread across Western North Carolina.
Updated on Oct. 15, 2026 in Wildlife
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Joro spiders, which were first detected near Atlanta in 2014, have been spreading across Western North Carolina since 2021. The invasive species utilizes wind-borne silk and vehicle travel to expand its range throughout the area.
Why it matters
Understanding the movement of the Joro spider helps residents distinguish them from the native golden silk spider found in North Carolina. While their presence is growing, bites from the species remain rare.
Male Joro spiders are roughly 0.1 the size of their female counterparts. The population follows a seasonal cycle, hatching in the spring, reaching maturity in the fall, and dying off in the winter.
The players
Joro spider
This invasive species is known for its ability to travel via wind and vehicles.
Golden silk spider
This is a native arachnid species found in North Carolina.
The details
Young Joro spiders navigate by releasing silk strands to catch the wind, while adults primarily spread by hitching rides on vehicles. North Carolina residents should note that these spiders are distinct from the state's native golden silk spider.
Timeline
2014: Joro spiders were first detected near Atlanta.
2021: The spiders were first identified in western North Carolina.
Spring: The spiders hatch from eggs.
Fall: The spiders reach maturity.
Winter: The spider population dies off.
Culture Shift
The spread of the Joro spider reflects a broader trend of invasive species colonizing new environments through human-aided transportation. This movement follows the established pattern set by the 2014 introduction of Joro spiders in the American Southeast.
Residents may notice more spider activity as the creatures reach maturity during the fall months. Because the spiders often hitchhike on vehicles, drivers should be aware that they may transport the arachnids to new locations inadvertently.
The takeaway
The Joro spider lifecycle is dictated by the seasons, meaning the presence of mature adults is temporary each year. Recognizing the differences between this invasive species and native spiders can help reduce unnecessary concern.
Further reading
Learn more about local species and environmental monitoring in our North Carolina Wildlife section.
More information
To report sightings or view regional data, visit the iNaturalist spider tracking upload.
Source note: This article includes information reported by WLOS.
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