What is a Cockroach?
The word cockroach is stemmed from the Spanish cucaracha. The cockroach is characterized by a flattened oval body, long thin antennae, and a shining black or brown leathery integument. The head is directed downward, and the mouthparts are aimed to the back instead of forward or downward as is the case of the majority of other insects. The male generally has two pairs of wings, unlike the female, who in some species, is wingless or has vestigial wings. The female generates eggs in egg cases (known as oothecae). These are on occasion held protruding from her body or might be glued in protected parts. After the female produces an egg case, the soft, white nymphs emerge. As their exoskeleton hardens, it turns brown in appearance. The shape and remarkable size (particular species demonstrate a wing spread measurement of higher than 12 cm [4.7 inches]) of cockroaches have made them a keen objective in the biological laboratory.
The cockroach takes a warm, humid, dark living habitat and is usually found thriving in tropical or other mild areas. Just a couple species have become pests. The insect inflicts damage upon more material than it digests and has a disagreeable smell. The diet of the roach, which should be both plant and animal produce, goes from food, paper, clothing, and books to dead insects, particularly bedbugs. Insecticides should be utilized in roach termination.
The American cockroach (species Periplaneta americana) is 30 to 50 mm long (up to about 2 inches), reddish brown, and lives outside or in dark, heated indoor places (e.g., basements and furnace rooms). During adult life, usually about 1.5 years, the female creates 50 or more oothecae, each possessing around 16 eggs that hatch after 45 days. Nymphal life goes from 11 to 14 months. The American cockroach, originally from tropical and subtropical America, has well-developed wings. However, most species are rarely good at flying.
The German cockroach (Blattella germanica), a common pest in households and is sometimes erroneously called a waterbug, is light brown with two dark stripes on the prothoracic region. The female produces the ootheca three days after mating and carries it for generally about 20 days. Because it is tiny in size (about 12 mm [less than 0.5 inch] long), this cockroach frequently is carried into residences in grocery bags and boxes; it has been taken across the globe by boat. Three or more generations could live yearly. This cockroach, found abundantly through the water pipes of the Croton Aqueduct in New York City, is known as the Croton bug.
The brown-banded cockroach (Supella supellectilium) is similar to the German cockroach but is even smaller. The male has totally developed wings and is lighter in colour than the female, whose wings are stunted and nonfunctional. Both sexes have two light-coloured bands across the back. The adult life span is around 200 days, and there can be two generations annually. Eggs may be deposited in clothes, wood molding, or cracks in the floor. With the invention of heated buildings this cockroach became common in cooler areas.
The Oriental cockroach (Blatta orientalis) is thought of as one of the most disgusting 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, but the female has vestigial wings. This cockroach has been carried in vehicles of business from its Asiatic origins to almost all the temperate regions.
Wood roaches are wild pests. Parcoblatta pennsylvanica, the common wood cockroach, may be found below logs and stones in northern latitudes. The male and female are so varied in appearance that they were initially thought to be unique species. The male, 15 to 25 mm (0.6 to 1 inch) long, possesses wings that expand beyond the abdomen; the female is smaller and has much shorter wings. Cryptocercus punctulatus consumes wood with the assistance of certain protozoans in its digestive tract.
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