About Emerald Ash Borer

EAB Locations

American EAB locations include Alabama, Arkansas, Colorado, Connecticut, Delaware, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, South Carolina, South Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, Tennessee, Texas, Vermont, Virginia, West Virginia, and Wisconsin.

PDF Map of EAB Locations
As of January 4th, 2021
Click to enlarge

Changes/additions included since December 1st 2020:

There are no initial county detections to report for December 😊.

State Maps



















New Hampshire

  • NHBugs.org
    (Multi-agency program in New Hampshire)

New Jersey

New York

North Carolina




  • Pennsylvania Department of Agriculture - EAB Detection Map
  • Due to a number of EAB detections in Pennsylvania and adjacent counties in neighboring states, in April of 2011 the internal state quarantine restricting the movement of ash within Pennsylvania was rescinded. THE FEDERAL QUARANTINE ON EAB AND EXTERNAL QUARANTINE ON FIREWOOD FROM OUTSIDE PENNSYLVANIA ARE STILL IN EFFECT.

South Carolina





West Virginia


Canada Maps

Canadian EAB locations include Ontario, Quebec, Manitoba, New Brunswick, and Nova Scotia.

Canada: Ontario, Quebec, Manitoba, New Brunswick, and Nova Scotia

State Information

Click on a state/province for more information.

EAB Timelines

Watch the spread of EAB in North America in our new timelines. Get a general sense of how EAB spread by state or take a more in depth look with our interactive map showing infestations by county.

How to Identify EAB

The following contain useful information for homeowners:

EAB Invasion of North America

  • Emerald Ash Borer Invasion of North America: History, Biology, Ecology, Impacts, and Management
    FULL-TEXT | PDF pdf

    • Annual Review of Entomology
      Since its accidental introduction from Asia, emerald ash borer (EAB), Agrilus planipennis Fairmaire (Coleoptera: Buprestidae), has killed millions of ash trees in North America. As it continues to spread, it could functionally extirpate ash with devastating economic and ecological impacts... Current management is focused on biological control, insecticide protection of high-value trees, and integrated efforts to slow ash mortality.

      Daniel A. Herms1,* and Deborah G. McCullough2
      1Department of Entomology, The Ohio State University, Ohio Agricultural Research and Development Center, Wooster, Ohio 44691; email: herms.2@osu.edu
      2Department of Entomology and Department of Forestry, Michigan State University, East Lansing, Michigan 48824; email: mccullo6@msu.edu

      *Corresponding author

How to Identify Ash Trees

The following contain useful information for homeowners:

Signs and Symptoms of EAB

  • Signs and Symptoms of the Emerald Ash Borer pdf
    MSU Extension Bulletin E-2938 | Reprinted December 2005
  • (Vermont Invasives)
    Whether you are hunting down the recently spotted Snowy Owl or checking off species on your life list, you could be protecting those very trees the birds of Vermont rely on. The Emerald Ash Borer (EAB) is an invasive forest pest that devours all three species of Vermont ash trees but you can help find early infestations of EAB by reporting woodpecker damage observed on ash trees.
  • Signs and Symptoms
    (New York Invasive Species Information)
    Early detection of EAB in newly infested trees can prove very difficult. This guide outlines the signs and symptoms with photos and information, and links to additional resources.
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