Parastitic Wasps released in Ontario, Quebec, to fight Emerald ash borers

"The Canadian Forest Service announced Wednesday it is releasing parasitic wasps in Ontario and Quebec this week in an effort to control the population of emerald ash borers.

Krista Ryall, a research scientist for the Canadian Forest Service, told CBC News that 1,600 of the non-stinging wasps native to China are meant to combat the emerald ash borers that have killed ash trees in more than 260,000 hectares of Ontario forests.

Emerald ash borers, also a native to China, were accidentally introduced to North America two decades ago, likely through unsecured shipping crates involved with international trading, says Ryall."

[link to www.cbc.ca]