Madagascar Hissing Cockroach Gromphadorhaima portentosa INSECTA Order Orthoptera Description Two inches in length. Males have two bumps on their heads for territorial battles. They butt heads together. Range Madagascar Status Common in Madagascar, but restricted to that island. Photo © James P. Rowan
	Ecology Habitat forest floor leaf litter.   Niche Omnivorous: captive diet includes dry dog food, monkey chow, and apples. Nocturnal, and semi-communal. Life History Life span is 2 years - eggs hatch as soon as they contact air. Gradual metamorphosis.