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Be on the
look-out for the
Asian Long-horned Beetle
ATTACKING TREES!
In 1996, the Asian
Long Horned Beetle (Anoplophora glabripennis)
was discovered in Greenpoint, Brooklyn. It has since been seen in
Brooklyn, Queens, and parts of Suffolk County. 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.
What
to look for:
- Adult beetles
have 1 to 1-1/2 inch long bodies with 2 inch long antennae. Their
bodies are black with white spots, and their antennae are black
and white (Figure 1).
- Large (1/2
- 3/4 inch) round holes on the branches, trunk, or roots are placed
where beetles leave the trees (Figure 2).
- Where females
chew out a spot to lay their eggs, you may see oval, darkened places
in the bark (Figure 2).
- You may find
large piles of sawdust around the base of trees or branches caused
by beetles exiting from inside the trees (Figure 3).
- The larvae
(Figure 4).
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