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Deadly Asian Needle Ant Invades 22 States
Invasive species with painful sting poses health risk to some residents
Apr. 1, 2026 at 5:34pm
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An invasive ant species called the Asian needle ant has spread to over 20 states across the U.S., posing a serious threat to native ant populations and potentially deadly allergic reactions in some people. The tiny insects, measuring just 2/10 of an inch long, have a sting described as feeling like 'liquid fire' and can cause people to lose consciousness if they are allergic.
Why it matters
The Asian needle ant is annihilating native ant populations that play a crucial role in maintaining a healthy ecosystem. Their rapid spread and aggressive takeover of new territories is disrupting the natural balance of forests and gardens. For people, the ants' painful sting can trigger severe allergic reactions that may require emergency medical treatment.
The details
A 10-year study in Athens, Georgia found that in areas infested by Asian needle ants, 60% of native ant species went locally extinct. The ants are fast-spreading and can be found under almost any piece of wood in infested areas. Experts warn that the ants pose a serious health risk, as people may not know they are allergic until they are stung, potentially leading to loss of consciousness and other life-threatening symptoms.
- The Asian needle ant has spread to 22 U.S. states as of April 2026.
The players
Susan Simon
A Georgia resident who has been stung by the Asian needle ant three times, with the third sting nearly causing her to lose consciousness.
James Vogt
An entomologist with the U.S. Forest Service who has studied the invasive spread of the Asian needle ant and its impact on native ant populations.
What they’re saying
“You won't know if you're allergic to it until you're stung.”
— Susan Simon
“Just the sheer extent to which these ants are able to invade forests and take over. In needle ant-infested areas, if you go out and pick up a piece of wood, the overwhelming possibility is it has Asian needle ants in it.”
— James Vogt, Entomologist, U.S. Forest Service
What’s next
Experts suggest that anyone who believes they have seen an Asian needle ant should contact their local agriculture extension office. They also recommend that people who are sensitive to insect stings speak to their doctor about getting a prescription for an EpiPen to counteract severe allergic reactions.
The takeaway
The rapid spread of the invasive Asian needle ant poses a serious threat to native ecosystems and public health. Its painful sting can trigger life-threatening allergic reactions in some individuals, highlighting the need for increased awareness and proactive measures to mitigate the impact of this invasive species.
