Gromphadorhina portentosa (Schaum, 1853)

Gromphadorhina portentosa
Synonyms: none
Common names: giant Madagascan hissing cockroach; giant hissing cockroach; Madagascan hissing cockroach; hissing cockroach
Useful information: Climbers.
Distribution: Madagascar (south-west)
Size: 60-80 mm
Reproduction and ontogeny: Ovovivipary. The gestation period is 3-4 months, number of newborns is 15-40.
Morphology: The males bears with monstrous horns on their pronotum. The abdomen’s color vary from brown to black. All other body parts are black. Some sources says their color could be manipulated by food.

  • Temperature: 25-28 °C // 77°F-82°F
  • Humidity: 60-70%
  • Food: Vegetables, fruits, protein (dry cat or dog food) and rotten wood with dried leaves.
  • Other information: They are the members of the group called ‘hissers’. Whenever they threatened, they forcibly expel air through a pair of modified abdominal spiracles, what are part of their respiratory system. This sound occurs while courtship and mating too. This species has a symbiont mite species which cleans the cockroach from left-overs and other contamination.

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