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The gypsy moth, Lymantria dispar, is one of North America's most devastating invasive forest pests. The species originally evolved in Europe and Asia and has existed there for thousands of years. In the late 1860s, the European gypsy moth was accidentally introduced near Boston, MA by an amateur entomologist. Since then, gypsy moths have spread throughout the Northeast and into parts of the upper Midwest and Great Lakes states including Indiana.
The gypsy moth is known to feed on the foliage of hundreds of species of trees and shrubs in North America but prefers oak trees. When gypsy moth populations reach high levels, trees may be completely defoliated by feeding caterpillars. Several successive years of defoliation, along with contributions by other stress factors, often results in tree death. Gypsy moth can be an expensive, messy problem for homeowners and, when out of control, can cause extensive damage to U.S. forests.
Indiana citizens can help combat this pest by understanding the gypsy moth problem and learning about its management. Please use this website as a source of reliable, current information.
May 2014 Bt Treatment Maps
June 2014 Mating Disruption Maps
Mating Disruption Information
Disrupt II Product Label Disrupt II MSDS Sheet SPLAT Product Label SPLAT MSDS Sheet Q & A's about Mating Disruption
Foray 76B Product Label Foray 76B MSDS Sheet Q & A's about Bacillus thuringiensis var. kurstaki (Btk) Commonly Asked Questions About Btk (Bacillus thuringiensis var. kurstaki)
If you are unable to attend one of the public meetings, you may still view the information which will be presented. Click here for a Presentation of the meeting content.
We enjoy talking about gypsy moth and would like to answer your questions and hear your comments. The comment period on these proposed treatments ends Friday, February 21, 2014 at 5:00 p.m. (EST).
Gypsy Moth 2014
Indiana DNR, Division of Entomology & Plant Pathology
402 W Washington St, W-290
Indianapolis, IN 46204-2739
For more information on the gypsy moth contact the Purdue Entomology Gypsy Moth Education Program at (765) 494-0822.