What is a Cockroach?
The word cockroach is a corruption of the Spanish cucaracha. The cockroach is recognizable by a flat oval body, long threadlike antennae, and a glossy black or brown leathery integument. The head is directed downward, and the mouthparts are directed rearward instead of forward or downward as is the case in most other insects. The male frequently has two pairs of wings, unlike the female, who in some species, is wingless or possesses vestigial wings. The female creates eggs in egg cases (labeled oothecae). These are on occasion held coming from her body or may be glued in protected parts. After the female generates an egg case, the soft, white nymphs emerge. As their exoskeleton hardens, it turns brown in appearance. The shape and large size (particular species have a wingspread of longer than 12 cm [4.7 inches]) of cockroaches have become a singular interest in the biological laboratory.
The cockroach prefers a warm, humid, dark habitat and is usually found thriving in tropical and other mild climates. Just a couple of species have become pests. The insect damages more material than it digests and emits a unpleasant scent. The food of the roach, which should be both plant and animal produce, can be from food, paper, clothing, and books to dead insects, including bedbugs. Insecticides could be taken in roach removing.
The American cockroach (species Periplaneta americana) is 30 to 50 mm long (up to about 2 inches), reddish brown, and inhabits out of doors or in dark, heated indoor places (e.g., basements and furnace rooms). During its adult life, a time of about 1.5 years, the female generates 50 or more oothecae, each holding about 16 eggs that hatch after 45 days. Nymphal life lasts from 11 to 14 months. The American cockroach, originally from tropical and subtropical America, has well-developed wings. However, many species are seldom great at flying.
The German cockroach (Blattella germanica), a common pest in the household and is on occasion erroneously called a waterbug, is light brown with two dark stripes on the prothoracic region. The female creates the ootheca three days after mating and carries it for around 20 days. Because it is tiny in size (about 12 mm [less than 0.5 inch] long), this cockroach frequently is carried into houses in grocery bags and boxes; it has spread across the globe by boat. Three or more generations can breed yearly. This cockroach, found abundantly in the water pipes of the Croton Aqueduct in New York City, has become called the Croton bug.
The brown-banded cockroach (Supella supellectilium) closely resembles the German cockroach but is a bit smaller. The male has wholly developed wings and is brighter in hue than the female, whose wings are stunted and nonfunctional. Both sexes have two light-coloured bands along the back. The adult life span is around 200 days, and there can be two generations in a year. Eggs are be deposited in clothes, wood molding, or cracks in the floor. With the introduction of heated buildings this cockroach became common in cooler locations.
The Oriental cockroach (Blatta orientalis) is thought of as one of the dirtiest of household pests. It is oval, shiny black or dark brown, 25 to 30 mm (1 to 1.2 inches) long, with a life cycle like that of the American cockroach. The male possesses short, fully developed wings, and the female possesses vestigial wings. This cockroach has been taken by vehicles of trade from its Asiatic origins to almost all the temperate regions.
Wood roaches are non-domestic pests. Parcoblatta pennsylvanica, the common wood cockroach, lives in logs and stones in northern latitudes. The male and female are so varied in appearance that they were first seen as individual species. The male, 15 to 25 mm (0.6 to 1 inch) long, has wings that go past the abdomen; the female is smaller and has much shorter wings. Cryptocercus punctulatus consumes wood with the help of particular protozoans in its digestive tract.
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