The photo shows the jet black wingless nymph. This roach is often referred to as the sewer roach, as it is found in sewers and in buildings with damp basements. It often climbs water pipes and enters upper floors of buildings.
The oriental roach is gregarious and lives in colonies. Females may deposit up to 18 egg capsules (ootheca) usually containing 16 eggs. After an incubation period of about 60 days, the nymphs hatch. The oriental roach may live nearly 2 years as an immature nymph and adult.
