Bug Identifier
Australian Cockroach (Nymph)
Community identification

Australian Cockroach (Nymph)

Periplaneta australasiae

Order & Family
Order: Blattodea, Family: Blattidae
Size
Nymphs are smaller than the 1.25 to 1.5-inch (32-35 mm) adults, appearing wingless and broad with distinct yellow segments on the thorax.
See this bug in the Encyclopedia

Natural Habitat

Typically found in tropical and subtropical climates, preferring warm, moist areas like under bark, in tree holes, or leaf litter. Indoors, they may be found in greenhouses or high-humidity areas like pipes or basements.

Diet & Feeding

Omnivorous and opportunistic scavengers; they eat decaying organic matter, fungi, starchy items like book bindings, and household food scraps.

Behavior Patterns

Nocturnal and highly active; nymphs undergo several molts before reaching maturity. While they prefer the outdoors, they will enter buildings during rain or to find food, hiding in crevices during the day.

Risks & Benefits

They do not bite but are considered pests because they can carry pathogens, contaminate food, and produce allergens that trigger asthma. In the ecosystem, they are beneficial decomposers that recycle organic nutrients.