The Oriental cockroach is dark reddish brown in color, so dark that it is sometimes referred to as the "Black Beetle" in Europe and some parts of the United States. When disturbed, it may run rapidly and adults may fly. Females are wingless, and males have wings. Female Oriental cockroaches can be distinguished from large nymphs by the wing stubs which have definite venation. The adult roach is about 1 inch long (some being reported as 1 1/4 inch in length) and immature cockroaches resemble adults except that they are wingless. Unlike other pest cockroaches, oriental cockroaches cannot climb up smooth surfaces (they lack sticky pads on their feet). Oriental cockroaches generally live in moist areas, but can survive in dry areas if they have access to water. They prefer cooler temperatures around 75 degrees Fahrenheit and can overwinter in protected areas outdoors where temperatures average 40 to 45 degrees Fahrenheit. These cockroaches are common in basements, crawl spaces, cracks and crevices of porches, foundations, and walkways adjacent to buildings. They feed on a wide variety of plant and animal material. The Oriental cockroach breeds well in unventilated crawl spaces or basements where humidity is high.