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European Gypsy Moth

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European Gypsy Moth
European Gypsy Moth, Pinned specimen of adult European/North American female (top) and male (bottom); USDA, APHIS, Plant Protection and Quarantine Archives
Scientific Name: 

Lymantria dispar Linnaeus (ITIS)

Common Name: 

Gypsy moth, European gypsy moth (EGM)

Native To: 

Europe (CABI)

Date of U.S. Introduction: 
Means of Introduction: 

Imported for silk production (Smithsonian 1999)


Defoliates trees (Smithsonian 1999)


USDA. Animal and Plant Health Inspection Service.
It's the Law -- If you are moving from a gypsy moth quarantine area to a non-quarantine area, you must inspect your outdoor household items for the gypsy moth and remove all life stages of this destructive insect before you move.
USDA. ARS. National Agricultural Library.
This collection of publications in NAL's Digital Repository provides access to and addresses a number of topics concerning the gypsy and the related brown-tail moths, from biological control methods to tree banding to quarantine practices. The bulk of the documents were published from 1891 to 1923 by various agencies in the area of the initial infestation, including the State Board of Agriculture for Massachusetts, New York, and Rhode Island, but also include some more modern USDA publications.

Distribution / Maps / Survey Status

USDA. FS. Northern Research Station.

Select the non-indigenous forest pest to view maps depicting state and county distribution. Produced by: USDA, FS, Forest Health Protection, and its partners.

University of Georgia. Center for Invasive Species and Ecosystem Health.
Provides state, county, point and GIS data. Maps can be downloaded and shared.
USDA. APHIS. Cooperative Agricultural Pest Survey. National Agricultural Pest Information System.

Federally Regulated

U.S. Government Printing Office. Electronic Code of Federal Regulations.

U.S. Government Printing Office. Electronic Code of Federal Regulations.

USDA. Animal and Plant Health Inspection Service.

USDA. Animal and Plant Health Inspection Service.

See what states have a federal quarantine for any of the targeted Hungry Pests, and identify which pests or diseases are at greatest risk due to a suitable habitat. In addition to federal quarantines, state-level quarantines might apply see State Summaries of Plant Protection Laws and Regulations (National Plant Board).


University of Georgia. Center for Invasive Species and Ecosystem Health.


Google. YouTube; Washington State Department of Agriculture.

Google. YouTube; University of Massachusetts - Amherst.

Selected Resources

The section below contains highly relevant resources for this species, organized by source. Or, to display all related content view all resources for European Gypsy Moth.

Council or Task Force
Alberta Invasive Species Council (Canada).
See also: Fact Sheets for more information about individual invasive species, including those listed as "Prohibited Noxious" and "Noxious" under the Alberta Weed Control Act

USDA. Forest Service; Southern Regional Extension Forestry. Forest Health Program.

See also: Gypsy Moth for more resources

National Plant Diagnostic Network.

You can become a more effective First Detector by familiarizing yourself with invasive target pests and pathogens known to exist in the U.S. If you think you have encountered one of the species or disease complexes listed, report its presence.

Nature Conservancy. Don't Move Firewood.
IUCN. Species Survival Commission. Invasive Species Specialist Group.
Slow the Spread Foundation, Inc.
Slow-the-Spread (STS) is a preventive project funded as part of USDA's (Forest Service and APHIS) national strategy to manage the gypsy moth in the United States. Note: Survey maps
Ontario's Invading Species Awareness Program (Canada).
Federal Government

USDA. FS. Northeastern Area State and Private Forestry.

USDA. FS. Northern Research Station.

USDA. FS. Northeastern Area State and Private Forestry.

The Gypsy Moth Digest is a database containing information about gypsy moth defoliation and treatments at the national level. Treatments include those funded by the gypsy moth Suppression, Eradication, and Slow The Spread (STS) programs.

USDA. Animal and Plant Health Inspection Service.
USDA. APHIS. Plant Protection and Quarantine.
International Government
Natural Resources Canada. Canadian Forest Service.
State and Local Government

Maryland Department of Natural Resources. Forest Service.

See also: Includes Invasive Plants and Insects Fact Sheets for additional species to help control invasive species in Maryland

Wisconsin Department of Natural Resources.

Missouri Department of Conservation.
See also: For more information about Invasive Tree Pests (insects and diseases) that are not native to Missouri

Wisconsin Department of Natural Resources.

Pennsylvania Department of Conservation and Natural Resources.

Virginia Department of Agriculture and Consumer Services. Plant and Pest Services.
Illinois Department of Agriculture.
Wisconsin Department of Agriculture, Trade, and Consumer Protection.

Minnesota Department of Agriculture.

North Carolina Department of Agriculture and Consumer Services. Plant Industry Division. Plant Protection Section.

Ohio Department of Agriculture.

California Department of Food and Agriculture. Plant Health Division. Pest Detection/Emergency Projects Branch.

Indiana Department of Natural Resources. Entomology and Plant Pathology.

University of Minnesota.
IPM of Midwest Landscapes is available for educating growers, landscapers, managers, and consumers in the principles of IPM and its application to managing the over 150 common insect species in Midwest landscapes.
Kansas State University. Kansas Forest Service.
Purdue University. Entomology. Extension.
University of Wisconsin - Extension.

University of Illinois. Extension.

Columbia University. Center for Environmental Research and Conservation.

Michigan State University. Integrated Pest Management Program.

See also: IPM Scouting in Woody Landscape Plants for more pests and diseases (Publication E2839)


  • Integrated Taxonomic Information System. Lymantria dispar. [Accessed Feb 28, 2015].

  • CABI. Invasive Species Compendium. Lymantria dispar (gypsy moth). CAB International. [Accessed Sep 14, 2019].

  • Smithsonian Institution. 1999. BugInfo: Gypsy Moths. Department of Systematic Biology, Entomology Section, National Museum of Natural History. Information Sheet 36.