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Gypsy moth hotline:
1-800-642-MOTH
For more information about the content on this website, please contact Andrea Diss-Torrance.
Site content © 2001-2009 Wisconsin Department of Natural Resources. All rights reserved.
Site design © 2001-2009 Board of Regents of the University of Wisconsin System, doing business as the Division of Cooperative Extension of the University of Wisconsin-Extension. All rights reserved. |
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Each year, gypsy moth caterpillars defoliate thousands of acres of hardwood forests throughout northeastern United States, including Wisconsin. This site offers tips on how to limit damage to your trees and available assistance programs.
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Moths lay eggs
Depending on the weather and location, female moths will continue to lay egg masses through the first 2 weeks of August.
Beginning the third week of August, look for "pinholes"
on the egg masses, evidence that they have been parasitized by Ooencyrtus
kuvanae. Hold off removing and destroying egg masses until after the first
hard frost to allow this beneficial insect an opportunity to build up
its numbers.
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