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Male Madagascar Hissing Cockroach. Figure 2. Female Madagascar Hissing Cockroach. The MHC is one of the rare ovoviviparous species of roaches, producing eggs that hatch within the female’s body. This makes it appear that the female is giving birth to live young.
Mar 5, 2021 · Both male, female, and juvenile cockroaches will hiss defensively and in alarm, but there are two other hisses that only males use: the male-to-female courtship hiss, and the male-to-male dominance hiss. Male Madagascar hissing cockroach at the museum, with visible “horns” on the dark-colored pronotum above the head.
New research shows that male Madagascar hissing cockroaches with smaller horns—which they use in battle over females—compensate with larger testicles that may help them fertilize females.
Male Madagascar hissing cockroaches establish territories that are defended from other adult males. Aggressive hissing and posturing behavior is used to warn intruders away. The male that is larger and hisses more usually wins.
The Madagascar hissing cockroach (Gromphadorhina portentosa), also known as the hissing cockroach or simply hisser, is one of the largest species of cockroach, reaching 5 to 7.5 centimetres (2 to 3 inches) at maturity.
- G. portentosa
- Gromphadorhina
Horns of a male Madagascar hissing cockroach. The Madagascar hissing roach has a unique pair of large, horn-like bumps that protrude from its pronotum (the foremost section of a cockroach’s thorax, which sits directly behind the head). Males use these horns in battles for dominance, similar to the clashes between head-butting bighorn sheep.
The Madagascar hissing cockroach is all hiss and no sting. Its alarm hiss, which sounds like a loud snake hiss, is the cockroach's attempt to scare off intruders. The male cockroach...
