Last week the office of the State Entomologist in Kentucky confirmed reports of this devastating invasive insect in Shelby and Jessamine Counties.
Emerald ash borer was introduced to the US from China by way of imported wood products. Since its discovery in 2002 it has spread rapidly, and will probably continue to do so.
Emerald ash borer was detected in Pennsylvania in the westernmost part of the state in 2007, and hasn’t been found farther east until just this past February (2009) when it showed up in Mifflin County (in the middle of PA) so learn what to look for if you have ash trees – apparently there is no stopping it from eventually reaching us. More info at http://ento.psu.edu/extension/trees-shrubs/emerald-ash-borer.