Ash borer spreads near Toronto
Sightings of the tree-killing emerald ash borer have been confirmed by a Canadian agency in Leeds and Grenville Counties, Ontario, at a rest area along Highway 401 eastbound, near Mallorytown.

The Canadian Food Inspection Agency said movement restrictions will be placed on the property  and more controls imposed on transport of affected woods once surveying throughout eastern Ontario has been completed.

The emerald ash borer has killed a large number of ash trees in Ontario Province and the Northeastern U.S., posing a major economic threat to urban and forested areas of North America. There have been numerous finds of emerald ash borers on trees in Ontario and Quebec and in Pennsylvania.

The emerald ash borer was first discovered in Windsor, Ontario and Detroit, Michigan in 2002, believed to have been carried to North America from eastern Asia in wooden packaging materials in the early 1990s. Because it went undetected until the ash borer population built up to damaging levels.

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