EAB Infestation Map

Below is the current map of emerald ash borer (EAB) infestation across North America. The most recent additions to the infestation map are British Columbia (May 2024) and North Dakota (August 2024). An up-to-date map is available on our website.

Trying to identify EAB?

Adult EAB are now visible, but it’s easy to confuse EAB with other lookalike species. You can find useful tools and guides for identifying EAB on our website.

Recent EAB News

EAB has been discovered in Belarus

EAB has been detected for the first time in the country Belarus, located north of Ukraine and east of Poland. The insect likely spread from neighboring Western Russia, where it was first detected in 2003, or Ukraine, where it was first detected in 2019. These are the only known EAB infestations in Europe.

New Study on EAB Biological Control

New research shows a link between EAB biocontrol and ash survival in Massachusetts: “…percent ash mortality was negatively correlated to the level of parasitism of EAB larvae in sentinel ash bolts deployed across the six study sites in 2024.” This relationship has not been observed outside of Massachusetts.

Minnesota and Oklahoma Release EAB Biological Control

Minnesota and Oklahoma have begun releasing parasitoid wasps native to Asia to help control EAB. With support from USDA APHIS, Oklahoma released one species and Minnesota released three species.

EAB Detected in Five New Texas Counties

EAB has been detected in five new counties in Texas, now reaching its southernmost point in the U.S. EAB is now present in 31 counties in the state of Texas.

EAB Confirmed in Itasca County, Minnesota

The Minnesota Department of Agriculture has confirmed the presence of EAB for the first time in Itasca County. This is the 57th county in the state to confirm EAB.

EAB Confirmed in Bourbon County, Kansas

The Kansas Forest Service has confirmed the presence of EAB in Bourbon County for the first time. This is the 18th county to report EAB and the third new county sighting in the state this year. 

Other News

August Tree Check Month

The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) declares August is “Tree Check Month” and asks everyone to look for signs of Asian longhorned beetle (ALB) by checking trees on your property and in your community for damage. Left unchecked, ALB can cause infested trees to die.

New Early Detection Method for Spotted Lanternfly

Virginia Tech researchers have developed a method to detect spotted lanternfly before the pest is actually seen by looking at ant DNA. Early detection could slow its spread and protect crops and forests.

APHIS Eradicates the Asian Longhorned Beetle from Holden, Massachusetts

APHIS announced the eradication of the Asian longhorned beetle in Holden, MA, removing 12.3 square miles from quarantine. Residents should remain vigilant and report tree damage to help prevent its spread.

Spotted Lanternfly Detected for the First Time in South Carolina

Clemson University’s Department of Plant Industry confirmed the presence of the invasive spotted lanternfly in Greenville and Seneca, South Carolina, raising concerns for the state’s agriculture and forestry.

A Century of Data Reveals Declining Forest Diversity

A recent UIUC study finds that EAB and Dutch elm disease have reduced biodiversity in the sampled Illinois woods. Using 96 years of census data from Trelease Woods, Illinois, researchers found impacts extending well beyond the loss of ash and elm trees.