Oriental Cockroach (Nymph)

Scientific Name: Blatta orientalis

Order & Family: Order: Blattodea; Family: Blattidae

Size: Nymphs vary from 6mm; adults reach approximately 25mm to 32mm (about 1 to 1.25 inches).

Oriental Cockroach (Nymph)

Natural Habitat

Damp, dark, and cool areas such as basements, crawl spaces, sewers, and mulch; often called 'water bugs' because of their preference for humidity.

Diet & Feeding

Omnivorous and opportunistic scavengers; they prefer starchy foods and decaying organic matter found in garbage or sewer pipes.

Behavior Patterns

Primarily nocturnal and slow-moving compared to other roach species; they undergo incomplete metamorphosis (egg, nymph, adult) and are often found near ground level as they cannot climb smooth vertical surfaces.

Risks & Benefits

Risks include contamination of food and surfaces with bacteria (like E. coli or Salmonella) and allergens that can trigger asthma; they have no significant benefits within human dwellings and are considered common household pests.

Identified on: 3/22/2026