Larger Elm Leaf Beetle (Monocesta coryli) - Adult beetles are approximately ¼ inch long, and yellowish or greenish with black outer margins on the wingcovers. Legs and antennae are yellowish-green in color. Larvae are about ½ inch long and yellowish-green with two black stripes along the back. The head and legs are black. The pupae are about ¼ inch long and yellow-orange with a few black hairs. Eggs are small, spindle shaped, and yellowishorange.