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Insects and InfestationsThere are a number of insects in our area or coming into our area that may cause potential damage to our trees and/or our health. Please keep an eye out for these insects and be aware of the damage they cause.   Browntail MothsBrowntail moths create webbed tents in trees to hatch their eggs. Caterpillars feed on leaves of trees and shrubs including oak, shadbush, apple, cherry, beach plum, and rugosa rose and can impede growth or kill. Contact of the caterpillars’ poisonous hairs with human skin causes a rash similar to poison ivy, which can be severe on some individuals.
 Carefully pruning the branches and disposing of the properly can help reduce the number of hatched caterpillars. You can also hire a professional to spray your property, but be sure that they are licensed and certified to use the appropriate chemicals. Other measures can be taken to prevent contact with hairs and subsequent rash.Brunswick’s Hawthorne School: Browntail Moth Page
Maine Forest Service: Browntail Moth Winter Webs Maine Forest Service: Browntail Precautions Times Record Article: “Arborist urges preventive action vs. browntail moth”  Asian Longhorn BeetleThe Asian longhorned beetle (ALB), Anoplophora glabripennis, is a woodboring beetle native to China. ALB develops and reproduces within healthy and stressed deciduous hardwood trees, such as maple, birch, horse chestnut, poplar, willow, elm, and ash. The attacked tree will eventually die.
 Emerald Ash BorerEmerald ash borer has not been found in Maine, however it could be here undetected. Emerald ash borer is among the forest threats that is easily moved in firewood. Emerald ash borer adults are active between late May and September and their habits kill ash trees.
Maine Forest Service EAB site US Forest Service EAB site Emerald Ash Borer National Information Page  Elongate Hemlock ScaleThe elongate hemlock scale, native to Japan, is a pest of eastern hemlock and Carolina hemlock. It attacks the lower surface of the hemlock needle, where it removes fluids from the mesophyll cells through piercing and sucking mouthparts. Elongate hemlock scale sometimes occurs with two other exotic pests — a circular hemlock scale, Nuculaspis tsugae (Marlatt), and the hemlock woolly adelgid, Adelges tsugae Annand. Mixed infestations of scales and adelgids can greatly hasten hemlock decline.
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