These beetles are about 1/4 inch long, and they are green or brown with a black stripe on both sides. They are most common in late summer and fall.

The immature stages of these beetles feed on the leaves of trees, usually elm trees; they can be very numerous in some areas. The adult beetles over winter in protected place outdoors or in house attics and garages.

Vacuum the beetles from carpet or windows indoors. Treat in the attic when large numbers of beetles are over wintering there.