Emerald Ash Borer can be confused with many other insects within the Buprestidae family and even the order of Coleoptera. This image from the University of Minnesota Extension, and the Minnesota Department of Natural Resources highlights some commonly confused insects.
Images from Gary L. Parsons
Department of Entomology, Michigan State University
November 2008
Department of Entomology, Michigan State University
November 2008
There are several unique features that separate the Agrilus family from the rest of the Coleopterans. Agrilus is more elongated and cylindrical than other Buprestidae. The base of the prothorax is reversed creating a lobe that extends toward the elytra. The Emerald Ash Borer adults tend to be a colorful metallic green while its elytra tend to be a darker shade of green and may contain undertones of copper or red-like reflections. The Emerald Ash Borer is the only member of Agrilus that is found in North America with a lustrous copper red dorsal surface on its abdomen. All other species of Agrilus tend to have a black, green, or blue abdomen. Also, a lengthwise mid-ridge or carina is found on the final dorsal segment also known as the pygidium. The carina may project slightly beyond the abdomen creating a 'spine.' (Parsons 2008)