Glossy, dark-brown body; long antennae; hairy legs. Flightless females have reduced wings and wide abdomen, while males have long wings that cover most of their thinner abdomen.
Mainly nocturnal and elusive. Males fly only for short distances.
Oriental cockroaches feed on decaying matter and human scraps.
Dark, damp, warm, hidden places, including buildings, sewers, and under decaying plant debris.