EAB Infestation Map

Below is the current map of emerald ash borer (EAB) infestation across North America. Mississippi was added on Nov. 14, 2025 following a newly confirmed detection, marking the latest expansion of EAB’s range. An up-to-date map is available on our website.

Catch our last EABU Sessions!

I Know What You Did Last Summer: Spread, impact, and management of elm zigzag sawfly

Kelly Oten, Assistant Professor and Extension Specialist, North Carolina State University

Tuesday, December 2nd, 2025 10:00 AM

Realistic Expectations for Invasive Species Management

David Coyle, Associate Professor, Clemson University

Thursday, December 11th, 2025 10:00 AM

Signs of EAB: Serpentine Galleries

Serpentine galleries beneath the bark are a key sign of EAB. These S-shaped ‘tunnels’ formed by larvae feeding on inner bark (phloem) disrupt transport of nutrients from trees to leaves. Galleries also score the outer sapwood, affecting water transport from roots to leaves. As larvae feed and grow, galleries become larger and frass accumulates behind the larvae. When affected sapwood dries out, a vertical split in the bark above the gallery may appear. Most EAB adults emerge in late spring, exiting through small D-shaped holes. Now that leaves have fallen, these signs of EAB will be easier to spot. Also look for larger holes in the bark left by woodpeckers. Woodpeckers of all sizes prey on large larvae during the winter.

Recent EAB News

Mississippi Forestry Commission Confirms First Detection of Emerald Ash Borer in Mississippi

Mississippi has confirmed its first detection of EAB in Issaquena County. The finding follows a field investigation by Mississippi Forestry Commission forest management and forest health staff, conducted with federal and state partners. Mississippi State University verified the identification. Click here for information on EAB resources in Mississippi.

Kansas officials confirm EAB in Marshall County

The Kansas Forest Service and the Kansas Department of Agriculture have confirmed the presence of the Emerald Ash Borer in Marshall County, marking the 19th county in Kansas confirmed to have the invasive insect.

Other News

Spotted lanternfly confirmed in Jackson county, Michigan

Michigan Department of Agriculture and Rural Development has confirmed a new population of spotted lanternfly in Jackson County. Michigan now has confirmed populations in Jackson, Lenawee, Macomb, Monroe, Oakland and Wayne Counties. Residents outside these counties are encouraged to report sightings with photos, date, time and location.

Unwelcome discovery: Sudden oak death pathogen found in Minnesota for first time

The University of Minnesota has confirmed the state’s first detection of the pathogen that causes sudden oak death, a destructive tree disease long known for devastating West Coast forests. The pathogen, Phytophthora ramorum, was identified by researchers in the Minnesota Invasive Terrestrial Plants and Pests Center as part of a multi-year project focused on invasive forest pathogens.

Invasive beetle known to infect Oregon white oak trees found in Marion, Polk counties

The Mediterranean oak borer, an invasive beetle carrying a deadly oak fungus, has been found in multiple Oregon counties. Summer trapping revealed over 500 borers in about 30 traps across the Willamette Valley, showing the pest is more widespread than previously known.

More information on Mediterranean oak borer can be found here.

SPLAT! Columbus Metro Parks hosts spotted lanternfly smashing event to fight invasive bugs

Columbus Metro Parks in Ohio hosted a series of events to help control local spotted lanternfly populations. Participants were provided with fly swatters and lists of local hotspots, and instructed to kill or squish the insects and their egg masses. Three events were held, highlighting community efforts to slow the spread of this invasive pest, which arrived in Ohio in 2020.