SUPERIOR, WI (WTAQ) - The highly-destructive emerald ash borer has made its way to the city of Superior.
That’s the farthest north the invasive bug has been found in Wisconsin.
It is blamed for killing tens of millions of ash trees in the eastern U.S. and Canada.
City workers in Superior found D-shaped holes and serpentine tunnels beneath the bark of a dead tree which was being removed from a street side walk last week.
A quarantine prohibiting ash products and hardwood firewood from leaving Douglas County is now in place.
Until the most recent discovery, Trempealeau County near La Crosse has been the northernmost site in Wisconsin to be visited by the bug.