The emerald ash borer has been discovered in Bruce County.
The Canadian Food Inspection Agency confirmed the discovery in Waterworks Park in Lucknow.
It's the first time the bug has turned up in the area, and the CFIA is urging people to play a part in controlling the spread of the emerald ash borer.
Ontario area Forest specialist Brian Hamilton says movement restrictions have been put in place in the affected areas around Lucknow.
That means there is a ban on the movement of all ash materials -- including logs, branches and wood chips from the affected sites without prior approval from the Canadian Food Inspection agency.
Hamilton says property owners have been notified, and further restrictions could be imposed later this year.
Meanwhile, Hamilton says the general public can help stop the spread of the bugs by not moving any potentially infested materials like firewood, or any other ash materials.
The Emerald Ash Borer has been found in 26 Ontario counties over the last 10 years, spreading from Windsor originally to Bruce county now.
The bugs have killed millions of trees in North America.