Common cockroaches

Most species in this family are brown, red-brown, or black-brown, with varied markings. They are highly active, can run very fast, and fly in hot conditions. They usually hide during the day, coming out to feed after dark. Some species produce repellent chemicals that can cause skin rashes and temporary blindness. They eat a range of organic matter and food scraps, regurgitating already digested food and leaving behind their feces and a characteristic unpleasant smell.

• life Cycle Males may have special glands on their back, which secrete chemicals that lure a mate into a suitable position for copulation. Females can produce up to 50 egg cases, each containing 12-14 eggs. The egg cases may be deposited on, buried in, or stuck to a variety of surfaces.

• OCCURRENCE Mostly in tropical and subtropical regions. Pest species are found around ports, warehouses, sewers, and garbage dumps.

<Neostylopyga rhombifolia, the Harlequin Cockroach, produces a sharp-smelling chemical (amyl acetate), which it uses to defend itself against predators.

distinctive black-and-cream patterns protruding egte case held until suitaible hiding place fo\ it is found *

distinctive black-and-cream patterns tough, leathery protruding egte case held until suitaible hiding place fo\ it is found *

» longhindlegs head pointed downward slender head pointed downward slender

protruding egg

A blatta orientalis, known as the Oriental Cockroach, is a common domestic pest. Like many species, it has spread beyond its native region by traveling on ships.

long, sensitive ) antennae

► sp iny legs periplaneta americana, the American Cockroach, is often used in laboratories because it is easy to culture. Originally from Africa, it is now found worldwide.

Feeding habits





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