emerald ash borer exit hole
An exiting emerald ash borer (Agrilus planipennis) leaves a three-millimeter hole in a white fringetree limb. (Photo courtesy of Don Cipollini, Ph.D.)
An exiting emerald ash borer (Agrilus planipennis) leaves a three-millimeter hole in a white fringetree limb. (Photo courtesy of Don Cipollini, Ph.D.)