Residents Urged to Watch for Invasive Asian Needle Ants
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Collapse ▲The Asian needle ant (Brachyponera chinensis) is an invasive pest that has been spreading across North Carolina and the southeastern U.S. This species poses a threat to both public health and local ecosystems, and sightings have been reported in surrounding counties.
Asian needle ants are small, about 5 millimeters long, with dark brown or black bodies and distinctive, orange-colored mandibles. They tend to nest in damp, shaded areas such as under mulch, logs, rocks, leaf litter, and rotting wood. Unlike fire ants, they don’t build visible mounds, making them harder to detect. Their sting is painful and can trigger severe allergic reactions, including anaphylaxis, in individuals who are sensitive to them. Some people have required emergency medical treatment from just one sting.
In addition to the health risks, Asian needle ants outcompete native ant species, disrupting the natural balance of local ecosystems. They can reduce populations of important insects and interfere with pollination and soil processes. Because they become active earlier in the year than native ants, they often establish dominance quickly in a new area.
Homeowners can take several steps to reduce the risk of infestation:
- Remove yard debris such as rotting logs, branches, leaf piles, and other clutter where ants may nest.
- Avoid over-mulching flower beds and landscaping, and use mulch sparingly to discourage nesting.
- Seal cracks and gaps around foundations, doors, and windows to prevent ants from entering the home.
- Inspect potted plants and outdoor items before bringing them inside, especially in spring and summer.
- Use bait traps or consult a pest management professional if ants are spotted or suspected around the home.
- Report sightings to the local Extension office to help track their spread.
Early detection and prevention are key to limiting the impact of the Asian needle ant. Residents who believe they’ve encountered these ants or have been stung should take caution and seek medical attention if needed. If you have questions about the ant, or any other pest, you can contact the N.C. Cooperative Extension, Clay County Center at (828) 389-6305 or visit us at 25 Riverside Circle, Ste. 2, Hayesville.