About Emerald Ash Borer

EAB Locations

EAB locations in Alabama, Arkansas, Colorado, Connecticut, Delaware, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, Ohio, Oklahoma, Ontario, Pennsylvania, Quebec, Tennessee, Texas, Virginia, West Virginia, and Wisconsin.

PDF Map of EAB Locations
As of August 1, 2017
Click to enlarge

Changes/additions included since the July 5, 2017 map are as follows:

The addition of initial county detections in:

  • Ringgold County, IA
  • Ouachita Parish, LA
  • MO
    • Cecil County
    • Crawford County
  • NJ
    • Morris County
    • Sussex County
    • Warren County

Added to the list of Canadian initial county detections:

  • Quebec City, QC

New York has expanded their state quarantine

Click here for more information.

State Maps















New Hampshire

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

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states, in April of 2011 the internal state quarantine restricting the movement of ash within Pennsylvania was rescinded.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.



West Virginia



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
      Vol. 59: 13-30 (Volume publication date January 2014)
      First published online as a Review in Advance on October 9, 2013
      DOI: 10.1146/annurev-ento-011613-162051

      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
  • Woodpecker Watch
    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, particularly for the lay property or woodland owner as the trees tend to exhibit few, if any, visible external symptoms of infestation. When EAB infestations begin in an area it can take years for the first trees to die and in these cases EAB is very difficult to detect. The first symptoms to occur are cracks in the bark where the individual EAB have been feeding. As EAB populations build, woodpeckers learn to feed on them and their foraging efforts are easy to detect even from long distances. When trees begin to decline rapidly with further EAB population buildup canopy thinning and epicormic sprouting (water sprouts) become more apparent. D-shaped adult emergence holes are small and hard to detect when there are few, but a reliable sign as populations build.
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