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Asian Long-Horn Beetle

General Information
General Information,   USDA Forest Service,    APHIS USDA, 
Beetle Title United States
Department of Agriculture

Forest Service

Northeastern Area


A long-horned beetle has recently been discovered attacking trees in Brooklyn and Amityville, NY. Its scientific name is Anoplophora glabripennis and this is the first time it has been seen infesting trees in the United States. This insect is native to Japan, Korea, and southern China where it kills trees.

In New York the beetle has been attacking maple (Acer) species, including Norway, red, sugar, silver, boxelder and sycamore maple. Horsechestnut (Aesculus) trees have also been heavily attacked. In china, it attacks other hardwoods including elms, poplars, willows and fruit trees. In the United States it is important to limit its spread because it may become a significant tree pest here.

Adult Beetle and Larva





Photographic Credits:
Figure 1: Charlie Harrington, Cornell University, Ithaca, NY.
Figure 2: E. Richard Hoebeke, Cornell University, Ithaca, NY.

Prepared by:
USDA Forest Service, Forest Health Protection, Durham, NH.

Beetle holes

What to look for:
  • Adult beetles are large-bodied with very long antenna. Their bodies are black with white spots, and their antenna are black and white (Photo 1). The best time to see the adults is from May to October.
  • Large (3/8" diameter) round holes anywhere on the tree including branches, trunk, and exposed roots. These are the sites where adults exit from the trees (Photo 2).
  • Oval to round, darkened wounds in the bark (Photo 2). These are oviposition sites where adult females chew out a place to lay their eggs.
  • Large piles of coarse sawdust around the base of trees or where branches meet the main stem (Photo 3).
Tree damage from beetles
Asian Beetle footer

Questions or comments.

Copyright © 2001
State of Illinois Department of Agriculture
P.O. Box 19281, State Fairgrounds
Springfield, IL 62794-9281
(217) 782-2172
(217) 524-6858 TTY