The Asian needle ant, a species native to Asia, has been present in the United States for nearly a century, particularly in the Southeastern region. According to the United States Department of Agriculture, the ant has been established in the country since 1932 and is currently found in several states along the Eastern Seaboard, including Georgia.
Dan Suiter, a distinguished professor of Urban Entomology at the University of Georgia, has recently highlighted the medical significance of this ant species. While ants are generally considered a nuisance, especially when they invade homes or businesses, the Asian needle ant poses a more severe threat due to its potential to cause anaphylaxis in humans.
Suiter, who also serves as an extension entomologist, working closely with homeowners and pest control professionals to identify various insect species, noted that the danger escalates when an insect’s sting can be life-threatening. In 2024, he received three reports of individuals suffering anaphylaxis following a sting from an Asian needle ant.
Despite not being naturally aggressive, the Asian needle ant will sting if it finds its way under clothing. Anaphylaxis symptoms following a sting can include swelling of the tongue or throat, difficulty breathing, rapid heart rate, nausea, vomiting, skin reactions like hives, low blood pressure, dizziness, fainting, and psychological symptoms. It is unpredictable who will experience anaphylaxis after a sting, but those who have previously reacted adversely to other insect stings should be cautious.
Asian needle ants typically inhabit logs or firewood, stones, and leaf litter, particularly favoring hardwood environments. They are small, about three-sixteenths of an inch, and are most active during the summer months. Unlike other ants, they do not trail but walk chaotically and are usually alone.
Suiter emphasized the importance of correctly identifying the Asian needle ant, suggesting that individuals collect or photograph the ant and send it to an extension agent for identification. The Asian needle ant not only poses a threat to humans but also disrupts local ecology by wiping out other native ant species that play a crucial role in seed dispersal.
To manage the ant population, Suiter recommended cleaning up loose logs or firewood and keeping them dry and off the ground. Pest control companies can also help control the populations through baiting techniques.