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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 © 2001-2008 Wisconsin Department of Natural Resources. All rights reserved.
Site design © 2001-2008 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 emerge at end of month
Gypsy moth caterpillars finish feeding by mid-July.
The insects will then pupate and emerge as adult moths in late-July. While
male moths look like many other small brown moths, they can be distinguished
by the fact they fly about looking for females in the late afternoon,
unlike other moths, which wait until dark. Female gypsy moths are white,
1 1/2 inches long, and unable to fly. They are usually found with an egg
mass as in this photo.
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