Emerald Ash Borer

Emerald Ash Borer Resources

The emerald ash borer (EAB), Agrilus planipennis, is an invasive beetle from Asia discovered in southeastern Michigan in 2002. Since then, the beetle has moved (or been distributed) to 35 states and five Canadian provinces. EAB has been found in nearly all Iowa counties and the neighboring states of Illinois, Kansas, Minnesota, Missouri, Nebraska, South Dakota, and Wisconsin.

EAB larvae feed on the inner bark of ash trees and cut off the living, water, and nutrient conducting vessels, causing tree death. EAB has killed hundreds of millions of ash trees in North America and cost municipalities, property owners, nursery operators, and forest products industries hundreds of millions of dollars. 


emerald ash borer adult beetle is one-half inch long.
Emerald ash borer adults are small elongated oval beetles that are metallic green in color.

Recognizing Emerald Ash Borer and Its Damage

Management of Emerald Ash Borer

Ash Identification and Replacement Suggestions

Images and Videos

Other Websites

Información del barrenador verde esmeralda en español

Do you live in Iowa and have an insect you would like identified?

The Iowa State University Plant & Insect Diagnostic Clinic will identify your insect, provide information on what it eats, life cycle, and if it is a pest the best ways to manage them. Please see our website for current forms, fees, and instructions on preserving and mailing insects.   

Contact information for each state's diagnostic laboratory for U.S. residents. If you live outside of Iowa, please do not submit a sample without contacting the Plant & Insect Diagnostic Clinic.  

Last Reviewed: 
February, 2022

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