Thursday, November 28, 2013

Good Read: Landscape Ontario FREE online magazine

On Sept. 20, 2103, the Canadian Food Inspection Agency (CFIA) confirmed the presence of Asian long-horned beetle (ALHB) in an industrial area near Pearson International Airport in Mississauga.

The CFIA is working with other federal departments and provincial and municipal governments to survey the area and determine next steps.

The ALHB can attack several common species of hardwood trees, such as maple. It eventually kills infested trees. It can fly short distances but can also spread through the movement of infested wood.

Signs of infestation may include perfectly round exit holes (about 3/8 to 1/2 in. diameter) made by adult beetles when they emerge from trees; pockmarks on tree trunks and branches where female beetles deposit eggs; frass produced by larval feeding and tunneling; early fall colouration of leaves or dead branches, and running sap produced by the tree at the egg laying sites, or in response to larval tunneling.

Between 2003 and 2007, ALHB was known to exist in the cities of Toronto and Vaughan. A quarantine area was established and control efforts were undertaken. Based on international standards, the pest was considered eradicated from this area in 2013 after not being detected for five years.

Additional information is available on the CFIA website at

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