How Large Is The Giant Hissing Cockroach ?

How Large Is The Giant Hissing Cockroach ?

The giant hissing Madagascar cockroach can reach a length of 1.5 to three inches! These gigantic creatures are found off the African coast in Madagascar and are famous for the hissing sound they produce. They are one of the largest species of cockroaches and are characteristically wingless. Males and females are easily distinguishable morphologically. Males have large horns behind their head while the females have small little bumps instead of protruding horns. Even their antennas vary according to the sexes. Males have hairy antennae while the females have comparatively smoother ones.

Males are aggressive and react quickly when provoked. Females, on the other hand, are relatively relaxed and calm. You can find these cockroaches in the forests floors of Madagascar. Over ripened fruits that have fallen off the trees form the main constituent of the cockroaches’ diet. They have an incomplete lifecycle. After mating, the females carry nearly 30 to 60 eggs for two months. After this period, the little ones emerge out from the eggs and are called instar nymphs. These undergo molting and reach the stage of adulthood in seven months time. An average hissing cockroach has a life span of two to five years.

Spiracles present on the abdomen aid in respiration. These openings are responsible for producing the hissing sound. Adult males, females and younger nymphs produce the typical hissing sound when provoked or disturbed. Extreme force is used to push the air out from the abdomen leading to a hiss, making these insects quite unusual in many ways.

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How Large Is The Giant Hissing Cockroach ?