Madagascar Hissing Cockroach

Gromphadorhina portentosa

Scientific Name

Madagascar Hissing Cockroach:  
Gromphadorhina portentosa

Distribution and Habitat

Geographic Range


Natural Habitat

Under logs and leaf litter in forests

Physical Characteristics

  • Males are light brown and have “horns” on their heads.

  • Females are darker brown.

  • Both males and females can grow to be 2–3 inches long.

Quick Facts

  1. The Hissing Cockroaches get their name from a hissing sound they make while fighting for territory or when startled by a predator.

  2. Males will use the horns on their heads to ram into one another, and typically the largest and nosiest male will win the battle.


Education Department

Conservation Status

Least Concern: The Madagascar Hissing Cockroach is common or abundant and is likely to survive in the wild.

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