6-European Gypsy Moth

The European gypsy moth (Lymantria dispar), an exotic invasive defoliating moth from France, was introduced into the United States in 1869 in Medford, Massachusetts and spread rapidly throughout New England.

John H. Ghent, USDA Forest Service, Bugwood.org

John H. Ghent, USDA Forest Service, Bugwood.org

Since their introduction, gypsy moths have spread north, south, and west, eating their way from Maine to North Carolina and into central Wisconsin. Despite state and local control efforts, the infestation continues to spread south and west. The female gypsy moth deposits an egg mass in June or July which may contain from 75 to 1,000 eggs.


Gypsy moth is one of North America’s most devastating forest pests.  Larvae can feed on over 300 types of tree/shrub species.  Feeding damage and defoliation can cause tree mortality and forest health decline.  Trade in nursery and timber products could be affected should gypsy moth become established.


The European gypsy moth is a significant nonnative forest pest in the United States. The goals of APHIS-PPQ in the U.S. are to define the extent of the gypsy moth infestation, to eradicate isolate populations, and to limit the artificial spread of gypsy moth beyond the infested area through quarantines and an active regulatory program. Federal quarantines are in 19 states http://www.hungrypests.com/the-spread/ByPest.php?pestabbr=gyp