Communities encouraged to spot invasive beetles before they spread
Tree owners and local communities are being encouraged to inspect their trees during August, a key period for spotting the Asian longhorned beetle, an invasive insect that threatens many hardwood tree species.
Late summer is considered the ideal time to identify the beetle because adult insects are most active and easier to see on trees, patios, outdoor furniture, and nearby surfaces. Early detection can help limit the spread of infestations and protect valuable trees.
The Asian longhorned beetle attacks a variety of hardwood trees. Maple trees are among its preferred hosts, but the pest can also damage birch, elm, willow, buckeye, and several other species. Infested trees may weaken over time, causing branches or entire trees to become hazardous.
“August is the perfect time for people to spot the Asian longhorned beetle,” said Agriculture Under Secretary Dudley Hoskins. “When residents take a few minutes to check their trees, they become our partners in protecting trees. Every report, whether it’s a beetle sighting or signs of damage, helps us act quickly and prevent this invasive pest from spreading.”
The beetle is recognizable by its shiny black body with white spots, long black-and-white striped antennae, and bluish-colored legs. Adults typically measure between one and one-and-a-half inches long.
People inspecting trees should watch for common signs of infestation. These include round exit holes in trunks and branches, bark depressions created when eggs are laid, sawdust-like material around trees, and branches that appear dead or unhealthy without an obvious cause.
Public participation plays an important role in managing invasive pests. Residents can help by regularly checking trees, avoiding the movement of untreated firewood, and reporting suspicious insect activity or tree damage to appropriate authorities.
Protecting trees from invasive pests helps preserve neighborhoods, urban landscapes, forests, and natural ecosystems. By taking a few minutes to inspect trees during August, communities can contribute to early detection efforts and help reduce the impact of damaging invasive insects.
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