A destructive pest responsible for killing millions of ash trees in North America has been discovered for the first time in Whiteside County. The Illinois Department of Agriculture announced it has received confirmation that a beetle collected on the county fairgrounds in Morrison is an emerald ash borer. An alert forestry technician with the Illinois Department of Natural Resources spotted a distressed ash tree on the property and notified Department of Agriculture staff, who found a dead, adult beetle in the tree’s bark. According to EAB Program Manager Scott Schirmer, the infestation appears highly localized. Staff were not able to confirm EAB in any other ash trees on the property. Forty-one Illinois counties are currently under quarantine to prevent the artificial or "human-assisted" spread of the beetle, including Bureau, Henry, Knox, and Stark counties.