The emerald ash borer is a small, metallic green beetle native to Asia. Discovered in Illinois in 2006, it has since spread throughout Northeast Illinois and East Central Illinois, recently being found in Effingham County.
The emerald ash borer feeds only on true ash trees. If trees go untreated, the death rate is 100 percent. If infested trees are not treated or removed, EAB will continue its destructive path moving on to other ash trees-eventually wiping out all ash trees.