ALBANY, N.Y. (AP) — An invasive insect that attacks hemlock trees has been found for the first time in the Adirondacks.

The state Department of Environmental Conservation says a small cluster of hemlock woolly adelgid was found on Prospect Mountain near Lake George. DEC is now encouraging hikers and campers to check hemlock trees and report any infestation.

The insect can be detected by the small, white, woolly masses it produces on the underside of twigs.

The pest has been found in 29 other counties in New York, mainly in the lower Hudson Valley and more recently in the Finger Lakes. Seventeen other states from Maine to Georgia have infestations.

Treatment involves applying an insecticide to the tree bark.