Size: Both male and female Oriental Cockroaches are about one-inch in length.

Color: The female is all black, while the male has two brown wings.

The female Oriental cockroach differs in appearance from the male which often leads homeowners to believe they have two types of cockroaches. The female is black, oval in shape, and has no wings -- only two small wing pads just behind the thoracic "shield." The male is thinner in shape, about the same length, and has two brown wings that extend partway down the abdomen.