Cockroaches are insects of the order: τα Blattodea(Blattaria).
The name “cockroach” comes from the Spanish word for cockroach, cucaracha, transformed by English folk etymology into “cock” and “roach”. The term cucaracha originally was used for the wood louse , but later was used to mean the palmetto bug. It is from this later Mexican usage that English-speaking Americans began using the term for regular cockroach.
The color varies from pale brown to black, with or without specks.
With 80 millimeters greater length is observed in type. In contrast to the genus Nocticola some kinds arriving only two millimeters in length. The body is generally oval and flattened around the belly.
Typically the species live in the soil in organic residues, but there are species in low foliage plants and even arboreal species, which help in pollination of flowers. Have been found and species that live in the water part, as species that withstand conditions in the wilds. Species of the genus Arenivaga during the hot days of time climbing trees, and in the cold nights digging holes into the soil and retreat in these. Some species live in colonies of ants or nests of other animals. The species that we find in the building during the day hiding behind images or between furniture and walls, cracks between firebricks under old wallpaper on sewer pipes.
Female cockroaches are sometimes seen carrying egg cases on the end of their abdomens; the egg case of the German cockroach holds about 30 to 40 long, thin eggs in a case called an ootheca. The egg capsule may take more than five hours to lay and is initially bright white in color. The eggs are hatched from the combined pressure of the hatchlings gulping air. The hatchlings are initially bright white nymphs and continue inflating themselves with air, becoming harder and darker within about four hours. Their transient white stage while hatching and later while molting has led many to claim the existence of albino cockroaches.
A female German cockroach carries an egg capsule containing around 40 eggs. She drops the capsule prior to hatching, though live births do occur in rare instances. Development from eggs to adults takes three to four months. Cockroaches live up to a year. The female may produce up to eight egg cases in a lifetime; in favorable conditions, she can produce 300 to 400 offspring. Other species of cockroaches, however, can produce an extremely high number of eggs in a lifetime; in some cases a female needs to be impregnated only once to be able to lay eggs for the rest of her life.
Impact on humans
Some species live in houses and are potential carriers of disease. Altered food and can spread pathogenic organisms. They can also cause allergic reactions. The fight by humans is usually done with the use of insecticides, but often develop immunity against chemicals.