The beetles are most active at night, and hide during the day. If given the opportunity, they may seek shelter in houses. Cleaning up all weeds early in the spring is the best way to prevent this problem. They are up to two inches long when mature. You can tell them from white grubs because they move on their back by undulating their body, and are curled into the typical C-shape.
Adults have emerald green wings with brown at the margins.
They congregate in large numbers to feed on various types of fruit. Their normal food is prickly pear fruit. The adult is a light tan or cream-colored moth with two dark circles on the edges of its rear wings. The larvae are up to one inch long and vary in color from pink or pinkish-brown to dark cream with a greenish tinge. The caterpillars feed on the blossoms of fan palms, where they do little damage.