Emerald Ash Borer (Agrilus planipennis) is an invasive wood boring beetle that feeds on the tissues under the bark of ash trees (Fraxinus spp) and kills them. EAB is 100% fatal to native ash trees of any size, any age, healthy or unhealthy, (according to research by Michigan State University and the US Forest Service). Emerald Ash Borer (EAB) is not a threat to human health but it does threaten our forest and urban tree populations.
The metallic green EAB beetle is native to East Asia and was accidentally imported to the United States within the wood of shipping crates from China. EAB was first discovered in North America near Detroit, Michigan in 2002. Since then the beetle has spread to several eastern and midwestern states, including Wisconsin. EAB has also been found in Canada.
Read more at Wisconsin’s Emerald Ash Borer Information Source.