
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.
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.