Japanese Hornets in Georgia: Are They Dangerous?

Japanese giant hornets, sometimes called “murder hornets,” have not been found in Georgia. The only confirmed sightings of that species in North America are in the Pacific Northwest, specifically Washington State and British Columbia, Canada. However, a different invasive Asian hornet, the yellow-legged hornet, was detected near Savannah, Georgia in August 2023, marking the first time a live specimen had been found in the open United States. That discovery is likely what’s driving the search.

Which Hornet Was Actually Found in Georgia

The hornet detected in Georgia is the yellow-legged hornet (Vespa velutina), a separate species from the Japanese giant hornet (Vespa mandarinia). A beekeeper near the port of Savannah reported an unusual-looking hornet in July 2023, and by August 9, the USDA confirmed its identity. On August 15, Georgia’s Commissioner of Agriculture formally announced the first detection of a yellow-legged hornet anywhere in North America.

The two species are quite different. Japanese giant hornets are the world’s largest hornets, roughly two inches long with an orange head and a striped yellow-and-brown body. Yellow-legged hornets are noticeably smaller, closer to the size of a European hornet. They have a mostly dark body with distinctive yellow leg tips, which gives them their common name. Many large insects native to Georgia, including European hornets and cicada killers, get mistaken for both species, so accurate identification matters.

Why Yellow-Legged Hornets Worry Officials

Yellow-legged hornets are aggressive predators of honeybees. They hunt by hovering near hive entrances and picking off bees one by one, a behavior called “hawking.” In Europe, where the species has been established since 2004, it has become a serious problem for beekeepers and pollinator populations. European honeybees, unlike their Asian counterparts, have no evolved defense against this predator.

Georgia’s beekeeping and agriculture industries have reason for concern. The state is a significant honey producer, and pollination services from managed honeybee colonies support crops across the Southeast. An established yellow-legged hornet population could threaten both. The fact that the first specimen was reported by a beekeeper, found in an active apiary near the port of Savannah, underscored the direct risk to hives.

The Eradication Response Near Savannah

After the initial detection, the Georgia Department of Agriculture deployed two teams of four people each to the Savannah area. They placed 170 traps around the detection site and used a combination of electronic tagging and a hands-on tracking method: capturing individual hornets, releasing them, and physically following their flight path back to the nest.

By late October 2023, the teams had located and destroyed five nests. The nests were built high in pine trees, between 60 and 90 feet off the ground, and well camouflaged despite their large size. The largest was roughly the size of an exercise ball. All eradications were done at night to reduce the risk of stings, and each operation took less than an hour. No injuries were reported during any of the five operations.

The challenge with these hornets is their nesting preference. Building nests high in tree canopies makes detection extremely difficult, even when the nest is large. Locating them required specialized tracking rather than simple visual surveys.

How Dangerous They Are to People

A yellow-legged hornet sting is comparable in pain to stings from other wasps and hornets. For most people, the sting site will hurt, swell, and resolve on its own within a few hours. The real medical risk is the same as with any bee or wasp sting: people with known allergies to insect venom, those who receive multiple stings, or anyone who develops symptoms beyond localized pain (difficulty breathing, swelling away from the sting site, dizziness) need emergency medical attention.

These hornets are not especially aggressive toward people. They are primarily a threat to honeybee colonies, not to humans walking through a yard. That said, disturbing a nest would provoke a defensive response, and their nests can house hundreds of individuals.

What Georgia Residents Should Know

If you live in coastal Georgia, particularly the Savannah area, and spot a hornet that looks unfamiliar, it’s worth reporting to the Georgia Department of Agriculture. The agency set up reporting channels specifically for suspected sightings. A clear photo is the most useful thing you can provide. Do not attempt to approach or destroy a suspected nest yourself, especially given how high these hornets tend to build.

Several native and established insects in Georgia look similar enough to cause confusion. European hornets are large, brown-and-yellow wasps that are already common across the state. Cicada killers are solitary wasps that can be nearly two inches long and are completely harmless to people despite their intimidating size. Both get reported as invasive hornets regularly. The yellow-legged hornet’s distinguishing features are its predominantly dark body and bright yellow lower legs, a color pattern that’s unusual among Georgia’s native large wasps.

The Japanese giant hornet, for its part, remains a Pacific Northwest concern. Washington State conducted its own eradication campaign starting in 2020, and there is no evidence the species has spread beyond that region. If you’re in Georgia, the yellow-legged hornet is the invasive species to be aware of.