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Emerald Ash Borer
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   March 2013- The Emerald Ash Borer is a highly destructive invasive beetle and it was discovered in Concord, NH back in March of this year by a landowner that noticed a high amount of woodpecker activity around one of his ash trees. This marks the first time this invasive species has been found within the borders of the state..  An estimated 25 million Ash trees, which make up about 6 percent of the states trees, are in danger from this destructive beetle which came to this country from Asia.  Tree experts are currently examining trees in the Concord area to determine the extent of the infestation and at this time, it is not known how far the infestation has spread.

   It is the larva of the Ash Borer that actually destroys the trees and not the adult beetles. The adult beetles is a dark metallic green about 1/3 of an inch long and about 1/18 of an inch wide. The head is flat with black eyes. In about one week after they hatch, they will start mating and eggs are laid about 2 weeks after that. The eggs are laid in areas where the bark is rough and will begin to hatch in about two weeks. After hatching, the larva will bore through the bark in to the phloem and outer layer of sapwood where they will feed until the weather get cold. In about 3 to 5 years the larva will have destroyed enough of the sapwood to kill the tree. If anyone comes across the Emerald Ash Borer or any other invasive insect, please The Forestry Information Center at;

  UNH Cooperative Extension
131 Main St, Nesmith Hall
Durham, NH 03824
1-800-444-8978 (in New England)

or by emailing them at: .  To upload a picture for identification please visit to complete the form and upload the picture.