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Home > Cockroach

A cockroach is an insect of the order Dictyoptera (or Blattaria). The American Cockroach ( Periplaneta americana ) is about 3 cm long. The German cockroach (Blattella germanica) is about 1.5 cm long. Tropical cockroaches are much bigger. When infesting buildings, cockroaches are considered pests.

Cockroaches are often found around garbage and in the kitchen. FemaleFemale is a sex that denotes an animal which produces egg cells in order to reproduce. The "egg cell" is the larger gamete). Female or Feminine is a grammatical gender in many languages. The female is one half of a heterogamous reproduction system, where cockroaches, or henroaches, are sometimes seen carrying eggIn some animals, an egg is the zygote, resulting from fertilization of the ovum. It nourishes and protects the embryo. Oviparous animals are animals that lay eggs, with little or no other development within the mother. This is the reproductive way of many cases on the end of their abdomenThe abdomen (from the Latin word meaning "belly") is the part of the body between the pelvis and the thorax. The front of the abdomen is the abdominal cavity, which is separated from the thoracic cavity by the diaphragm. The lining of the abdomen is calle; the egg case of the German Cockroach holds about 30-40 long, thin eggs, packed like frankfurters in the case called an ootheca .

The eggs hatch from the combined pressure of the hatchlings swallowing air and are initially bright white nymphsIn biology, a nymph is the immature form of some insect species (e. among the locusts, cicadas, mayflies, termites, crickets, grasshoppers, cockroaches, mantids, and dragonflies) that underwent incomplete metamorphosis. It is not to be confused with a lar that continue inflating themselves with air and harden and darken within about 4 hours. Their transient white stage while hatching and later while molting has led to many individuals claiming to have seen albino cockroaches.

A female German cockroach carries an egg capsule containing around 40 eggs. She drops the capsule prior to hatching. Development from eggs to adults takes 3-4 months. Cockroaches live up to a year. The female may produce up to 8 egg cases in lifetime. In other words, in favorable condition it can produce 300-400 offspring.

The world's largest cockroach is the Australian giant burrowing cockroach , which can grow to 90 mm in length and weigh more than 30 grams. Comparable in size is the giant cockroach Blaberus giganteus , which grows to a similar length but is not as massive.

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The Madagascan Hissing Cockroach is a large flightless insect from the forests of MadagascarSee also Madagascar (movie) Madagascar is an island nation in the Indian Ocean, off the eastern coast of Africa. Madagascar is the 4th largest island in the world. It is the home of five percent of the world's plant and animal species, 80 per cent of them. It lives under the barkFor other meanings of bark see Bark (disambiguation). Bark is the outermost layer of stems and roots of woody plants such as trees. It overlays the wood and consists of three layers: the cork, the phloem, and the vascular cambium in other words, most of t of trees or in leaf litter, feeding on plant matter including leaves and fallen fruit.

Any predator that catches one of these cockroaches is in for a double shock. The legs of this insect are covered in needle-sharp spines and the cockroach can make a loud hissing sound. It does this by forcing air out of the breathing holes that run along the side of its body.

This is one of the largest cockroaches in the world and can reach 8 cm (3 inches).

Although they live in the forest, they are attracted by house lights, and will sometimes creep through open windows. However, they are harmless and will soon leave when disturbed.

The Madagascan Hissing Cockroach is often used in television programmes and films where a large scary-looking insect is required, giving this harmless creature an undeserved reputation.

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