TIGER HISSING COCKROACH
TIGER HISSING COCKROACH
Type – Arthropoda
Class – Insecta
Order – Blattodea
Family – Blaberidae
Genus – Gromphadorhina
Species – Gromphadorhina grandidieri
The Tiger Hissing Cockroach is native to Madagascar, where it inhabits tropical forests. It lives mainly among fallen leaves, rotting wood, and the forest floor, where humidity remains high. In the wild, it lives about 1.5–2 years; in captivity, it can live up to 3 years under proper care.
Body weight ranges from 15 to 25 grams. Males are slightly larger than females. Body length ranges from 6 to 8 cm. Males have noticeable horn-like protrusions on the pronotum, while females are more rounded. This species is ovoviviparous — the female carries the egg case (ootheca) inside her body until the young hatch. Nymphs moult several times before reaching adulthood.
They are nocturnal and hide during the day. Their distinctive “hissing” sound is produced by forcing air through spiracles and serves as communication, defence, or courtship behaviour. Omnivorous detritivores. They feed on decaying wood, fruits, vegetables, leaves, and other plant debris.
The genus Gromphadorhina belongs to an ancient lineage of cockroaches that evolved more than 300 million years ago. Hissing cockroaches are considered one of the oldest groups adapted to Madagascar’s forest ecosystems.
These cockroaches are commonly used in education and research due to their harmlessness and fascinating behaviour. They are popular among terrarium enthusiasts.
In popular culture, they often appear in films and television as “exotic insects,” but scientists value them as model species for studying insect social behaviour.
According to the International Union for Conservation of Nature (IUCN), Gromphadorhina grandidieri is listed as “Least Concern.”
Interesting facts
- Hissing cockroaches are among the few insects that can produce loud sounds without using wings.
- Each cockroach has a unique “hiss,” allowing individual recognition within colonies.
- Males hiss to warn rivals and attract females during mating rituals.
- They are completely harmless to humans and play an ecological role as natural decomposers.
- In the wild, they contribute to nutrient recycling by breaking down decaying vegetation.
