Emerald Ash Borer


More than 40 million ash trees have died or are dying from emerald ash borer beetle attacks in the United States since the beetle's introduction sometime shortly before its discovery in 2002. Early detection of EAB in newly infested trees can prove very difficult, particularly for the lay property or woodland owner as the trees tend to exhibit few, if any, visible external symptoms of infestation. One of the first noticeable signs of infestation is often the presence of unusually abundant uneven holes drilled by woodpeckers as they feed on prepupal larvae. A very clear indication of EAB infestation is the presence of the D-shaped emergence holes chewed through the bark on branches or the trunk by adults when they emerge in the spring. These holes are 1/8 inch (3 mm) in diameter. If the holes are not D-shaped, then they were not caused by EAB (native wood borer emergence holes are round or oval and are much larger, 1/4 inch (6 mm) or larger).

Although this beetle has not yet been found in Irondequoit, it has been spotted in Monroe County. The Town of Irondequoit has completed a survey of all ash trees in the Town's right of way. The Town is not planning to take any action at this time but will meet with residents to discuss their ash trees and infestation management. If residents have a concern about their ash tree(s) or think they may be infected, please contact the Department of Public Works at 336-6033.