Petersburg Pilot -

Hemlock sawfly outbreak continues for a second summer


Photos courtesy of Elizabeth Graham

Hemlock sawfly larvae feeding on the pines of a hemlock tree.

Southeast Alaska is currently going through its second year of increased hemlock sawfly activity, but an entomologist with the United States Forest Service said the trees that the insects feed off of should make a full recovery after the ecosystem regulates itself.

"We have experienced these kinds of outbreaks in the past," said Elizabeth Graham, an entomologist with the State & Private Forestry, which is a branch of the USFS that focuses on forest health protection. "Usually we have a big outbreak, and it'll last for a couple years. Then it will crash just as soon as it built up, and...

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