The Emerald Ash Borer, Agrilus planipennis Fairmaire, is a highly destructive wood-boring beetle that feeds on the phloem of ash trees (Fraxinus spp.). Since first being recorded in Michigan in 2002, the Emerald Ash Borer has broadened its range in the United States and has killed millions of ash trees. (To learn how to inspect your trees, click here.)
Within five years of the first discovery of EAB in the United States, it had spread to seven other states. As of June 2016, it had been confirmed in all of the green states shown on this map. It has also been sighted in Ontario and Quebec. The native range of EAB is Russia, Mongolia, Japan, China, and Taiwan.