Gromphadorhina

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Ordo: Blattodea

Familia: Blaberidae
Subfamilia: Oxyhaloinae
Genus: Gromphadorhina
Species: G. grandidieri – G. laevigata – G. oblongonota – G. portentosa – G. picea
Name

Gromphadorhina Brunner von Wattenwyl, 1865
Synonyms

Gromphadorrhina
References

Gromphadorhina – Taxon details on National Center for Biotechnology Information (NCBI).
Zicha, Ondřej et al. Gromphadorhina – Taxon details on Biological Library (BioLib).

Gromphadorhina is one of several roach genera in the tribe Gromphadorhini[1], all from the island of Madagascar. It is one of several genera known collectively known as hissing cockroaches, and common in the pet trade. In the older literature, the name is sometimes misspelled as "Gromphadorrhina”
As pets

All four Gromphadorhina species are widely kept as exotic pets, where the most well-known species is the Madagascar hissing cockroach, (G. portentosa), though this is debatable as at least two other species in the genus are commonly confused with it; G. oblongonota[1] and G. picea.[2]
References

http://www.roachforum.com/index.php?showtopic=3452
Delfosse, E. (2004) Les blattes souffleuses de Madagascar. Insectes 153: 19-22.