Emerald ash borer found in Maine
May 31, 2018 | 11:36 am CDT
An adult emerald ash borer is shown in a file photo provided by the Minnesota Department of Natural Resources.

Forestry officials have announced the highly destructive emerald ash borer has been discovered in Maine for the first time.

Responsible for the deaths of millions of trees in the U.S. and Canada, the emerald ash borer was known to be expanding across the border in New Brunswick, Canada, but it had not been seen in Maine until entomologists discovered it in Madawaska, Maine, in May.

Maine State Entomologist Dave Struble told Maine Public radio that officials have been looking for the insect in the state for about 15 years. It was known to be in neighboring forests in Canada and New Hampshire, so it was seen as only a matter of time before it spread to Maine. “We’ve got to work on the assumption that there’s a high possibility that there are additional spots either further downstream in Madawaska or further down into Grand Isle or even beyond,” he said.

Struble says all indications are that the insect has been found early, although he doesn’t think the emerald ash borer can be eradicated. “But I think we can slow the spread and buy a bunch of time to manage,” he said.

A native of Asia, emerald ash borers were found in the U.S. and Canada in 2002 and are considered one of the most destructive forest pests in North America, being responsible for millions of dollars in losses from the destruction of ash trees. In Maine alone, the estimated potential damage could be significant as the commercial ash tree value has been put at $320 million.

“Slowing the spread of EAB is crucial,” the Maine Department of Agriculture, Conservation and Forestry said in a statement. “An emerald ash borer generally moves only about one half-mile on its own in a year, but can move hundreds of miles in a single day within a piece of infested firewood.”

The small metallic-looking beetles lay eggs on ash trees, and the hatching larvae tunnel under the trees’ bark, creating damage that usually kills a tree in as little as three to five years.


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William Sampson

William Sampson is a lifelong woodworker, and he has been an advocate for small-scale entrepreneurs and lean manufacturing since the 1980s. He was the editor of Fine Woodworking magazine in the early 1990s and founded WoodshopBusiness magazine, which he eventually sold and merged with CabinetMaker magazine. He helped found the Cabinet Makers Association in 1998 and was its first executive director. Today, as editor of FDMC magazine he has more than 20 years experience covering the professional woodworking industry. His popular "In the Shop" tool reviews and videos appear monthly in FDMC.