German Cockroach (Nymph)

Scientific Name: Blattella germanica

Order & Family: Order: Blattodea; Family: Ectobiidae

Size: 3mm to 10mm (nymphal stages); adults up to 16mm

German Cockroach (Nymph)

Natural Habitat

Warm, humid indoor environments, specifically kitchens and bathrooms near food and water sources.

Diet & Feeding

Omnivorous scavenger; feeds on food scraps, grease, starches, glue, and organic matter.

Behavior Patterns

Nocturnal and highly gregarious. They undergo incomplete metamorphosis; this nymphal stage indicates a breeding population is likely present.

Risks & Benefits

Significant household pest; can spread pathogens (like Salmonella and E. coli), trigger asthma or allergies, and contaminate food. No ecological benefits within human dwellings.

Identified on: 2/22/2026