Host range of emerald ash borer

The emerald ash borer (EAB), Agrilus planipennis Fairmaire, is native to China, Korea, Japan, Mongolia, Russia, and Taiwan (Haack et al. 2002). Established populations of EAB were first discovered in Michigan and Ontario in 2002. Smaller populations, which resulted from human assisted movement of infested host material, were found in Ohio, Maryland, and Virginia in 2003. As of November 2003, EAB has only been found to attack ash (Fraxinus) trees in North America. Ash is the only host listed for EAB in China, and ash is also listed as a host in Japan. In Japan, ash, elm (Ulmus), walnut (Juglans) and wingnut (Pterocarya) are reported as hosts, while elm is listed as a host in Korea (Haack et al. 2002).