Common name: Emerald ash borer
Scientific name: Agrilus planipennis
Hosts: Ash (Fraxinus species). All 16 native ash species are susceptible to attack. In northeastern Illinois, common susceptible ash species include green ash (Fraxinus pennsylvanica), white ash (F. americana), blue ash (F. quadrangulata), and black ash (F. nigra). Horticultural cultivars of these species are also susceptible. Healthy ash trees of any size are vulnerable to attack. Emerald ash borer does not attack mountain-ash, prickly-ash, or wafer-ash since they are not true ash or Fraxinus species.
The emerald ash borer (EAB) is a serious pest of ash trees. EAB has been found in a large portion of the United States and Canada. It was found in Illinois in 2006 and has killed millions of ash trees since that time.