Animalia > Arthropoda > Insecta > Blattodea > Blaberoidea > Blaberidae > Gromphadorhina > Gromphadorhina portentosa

Gromphadorhina portentosa (giant Madagascan hissing cockroach; hissing cockroach; Madagascan hissing cockroach; giant hissing cockroach; Madagascar giant hissing cockroach)

Synonyms: Hormetica portentosa

Wikipedia Abstract

The Madagascar hissing cockroach (Gromphadorhina portentosa), also known as the hissing cockroach or simply hisser, is one of the largest species of cockroach, reaching 2 to 3 inches (5.1–7.6 cm) at maturity. They are native to the island of Madagascar, which is off the African mainland, where they are known to be found inside of rotting logs. It is one of some 20 known species of large hissing roaches from Madagascar, many of which are kept as pets, and often confused with one another by pet dealers; in particular, G. portentosa is commonly confused with G. oblongonota and G. picea.
View Wikipedia Record: Gromphadorhina portentosa


Diet [1]  Detritivore
Nocturnal [1]  Yes


Parasitized by 
Leidynema portentosae <Unverified Name>[2]

Institutions (Zoos, etc.)


Madagascar (south-west);

External References



Attributes / relations provided by
1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
2Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
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