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Emerald Ash Borer (El Barrenador Esmeralda del Fresno)
ALERT! To report a
suspected infestation of emerald ash borer in Connecticut, contact the
Agricultural Experiment Station:
Some of the following documents require Adobe Acrobat.
To report a suspected infestation outside of Connecticut, contact:
Emerald Ash Borer: The problem
The emerald ash borer is not present in Connecticut (as of 2008). However,
its range is spreading
both east and south from Michigan. Its larvae bore into ash trees (genus
Fraxinus), leading to death of the tree.
Emerald Ash Borer: Signs of Infestation
The emerald ash borer is an iridescent green-colored, wood-boring beetle
about Ό - ½ inch long. Unlike the brightly-colored,
six-spotted green tiger beetle (Cicindela sexgutta),
the emerald ash borer lacks white spots along the edge of its wings and its head
is not distinctly narrower than its back end. Its larvae live in the woody
tissue of ash (Fraxinus species) trees.
After the wood-boring larvae mature, the adults emerge from holes that are about
1/8 inch (about 3-4 mm) across. The holes are not perfectly round. Rather they
have one straight side, causing people to describe them as D-shaped. The first
things you may notice are jagged holes in the tree trunk where woodpeckers have
pecked at the larvae under the bark; or, you may spot a sick looking ash tree
that is missing many leaves in its upper branches. In a more advanced case, the
tree responds to the death of its upper branches by sending out numerous sprouts
from the trunk and roots. Under the bark, the larval tunnels wind back and forth
like the tracks of a very active snake.
What You Can Do
More information
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