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Asian Gypsy Moth

Scientific Name

Lymantria dispar asiatica Vnukovskij, Lymantria dispar japonica (Motschulsky), Lymantria albescens Hori and Umeno, Lymantria umbrosa (Butler), and Lymantria postalba Inoue (APHIS 2015)

Common Name

Asian gypsy moth (AGM)

Native To

L. asiatica is native to temperate Asia east of the Ural Mountains; L. d. japonica, L. albescens, L. umbrosa, and L. postalba are native to Japan (Pogue and Schaefer 2007)

Date of U.S. Introduction

First discovered in the Pacific Northwest in the 1991 (APHIS 2015)

Means of Introduction

From infested cargo in ships (APHIS 2015)


Eradicated in North Carolina and Washington. It is a voracious pest of trees that poses a major threat to forest habitats in North America. (APHIS 2015)

Current U.S. Distribution

Not currently established


  • USDA Animal and Plant Health Inspection Service Supports the Entomological Society of America’s New Common Name for Lymantria dispar

    • Mar 2, 2022
    • USDA. Animal and Plant Health Inspection Service.

    • The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) supports The Entomological Society of America's (ESA) initiative to replace the common name for L. dispar and participated in the effort to identify a new common name for this pest. APHIS continues to support ESA’s work on the “Better Common Names Project.” To prevent its spread, APHIS regulates the European gypsy moth (Lymantria dispar dispar) that is found in the Northeastern United States. While we support ESA’s initiative, we face a significant challenge in implementing the name change at this time because of a related pest of concern: the Asian gypsy moth.

      To align with ESA’s initiative and to ensure the effectiveness of our regulatory program, APHIS is exploring options for addressing the naming challenge for the Asian gypsy moth. To do this, APHIS will work with its international partners to explore options. This is critical before APHIS can implement the name change for the European gypsy moth to the newly announced common name “spongy moth.” Once a name change can be applied to the Asian gypsy moth, APHIS will begin to incorporate the new common names into our regulatory language and outreach products.

Distribution / Maps / Survey Status

Federally Regulated


Selected Resources

The section below contains highly relevant resources for this species, organized by source.

Council or Task Force
  • Fact Sheet: Gypsy Moth [PDF | 983 KB]

    • Dec 2016
    • 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

Federal Government
International Government
State and Local Government