Emerald Ash Borer
Adult: a dark metallic green beetle with a bullet-shaped, slender body. When wings are spread, the top of the abdomen under the wings is metallic purplish red. Adults are most active during the day, from late May to mid-June. Larva (immature stage): flattened, cream-colored, approximately 1 inch long when fully developed. Signs: Larvae feed under the bark of ash trees, leaving S-shaped galleries. Adults emerge from the tree, leaving D-shaped exit holes that are 1/8 inch in diameter.