Bug Identifier
Death’s-head cockroach (likely Madagascar hissing cockroach)
Community identification

Death’s-head cockroach (likely Madagascar hissing cockroach)

Gromphadorhina portentosa (probable)

Order & Family
Blattodea, Blaberidae
Size
Adults typically measure 5–8 cm (2–3.1 in) long; females are generally larger and broader than males.
See this bug in the Encyclopedia

Natural Habitat

Native to Madagascar, where it lives on the forest floor beneath leaf litter, logs, and decaying vegetation. Commonly kept as a pet or feeder insect elsewhere.

Diet & Feeding

Primarily detritivorous, eating decaying leaves, fruit, plant material, and occasionally animal matter. It is not typically a household pest.

Behavior Patterns

Flightless, nocturnal, and slow-moving; it hides by day and forages at night. Adults and nymphs hiss by forcing air through abdominal spiracles, especially when disturbed; females give birth to live young.

Risks & Benefits

Generally harmless to people and does not bite, sting, or transmit important diseases under normal conditions, though it may trigger allergies. It helps decompose organic matter and recycle nutrients; identification is less certain because only part of the insect is visible.