Invasive Sawfly Identified in Sitka

An invasive species has been discovered in Sitka, but biologists don't expect the insect to cause the same harm to alders in southeast Alaska as it did farther north.

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by Associated Press

SITKA- An invasive species has been discovered in Sitka, but biologists don't expect the insect to cause the same harm to alders in southeast Alaska as it did farther north.
The green alder sawfly is native to Europe, East Asia and North Africa.
The insect was first positively identified in Alaska in 2009. The Cooperative Extension Service says that by that time, the sawfly was actively defoliating thin-leaf alders along riverbeds in Anchorage, Seward, Kenai and in the Matanuska-Susitna area.
The extension service was notified about the local presence of the green alder sawfly after Michelle Putz with the U.S. Forest Service noticed one of her red alder trees didn't look healthy. The tree was covered with hundreds of the pale-green caterpillar-like insects.

 

 

 

 

 

 

 

 

 

 

 

 

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