According to one hypothesis, cockroaches were an ancient group of insects that arose during the Devonian period.
Cockroaches (or roaches[1][2][3]) are a paraphyletic kelompok of insects belonging to Blattodea, containing all members of the kelompok except termites. About 30 cockroach species out of 4,600 are associated with human komunitass. Some species are well-known as pests.
The cockroaches are an ancient kelompok, with their ancestors, known as "roachoids", originating during the Carboniferous period, some 320 million years ago. Those early ancestors, however, lacked the intern ovipositors of kekinian roaches. Cockroaches are somewhat generalized insects lacking special adaptations (such as the sucking mouthparts of aphids and other true bugs); they have chewing mouthparts and are probably among the most primitive of living Neopteran insects. They are common and hardy insects capable of tolerating a wide kisaran of climates, from Arctic cold to tropical heat. Tropical cockroaches are often much larger than temperate species.
Kekinian cockroaches are not considered to be a monophyletic kelompok, as it has been found based on genetics that termites are deeply nested within the kelompok, with some grups of cockroaches more closely terkait to termites than they are to other cockroaches.
Some species, such as the gregarious German cockroach, have an elaborate social structure involving common shelter, social dependence, information transfer and kin recognition. Cockroaches have appeared in human culture since classical antiquity. They are dikenally depicted as dirty pests, although the majority of species are inoffensive and live in a wide kisaran of komunitass around the world.
Cockroaches are members of the superorder Dictyoptera, which includes the termites and mantids,[4] a kelompok of insects once thought to be separate from cockroaches. Currently, 4,600 species and over 460 genera are described worldwide.[5][6] The name "cockroach" comes from the Spanish word for cockroach, cucaracha, transformed by 1620s English folk etymology into "cock" and "roach".[7] The scientific name derives from the Latin blatta, "an insect that shuns the light", which in classical Latin was applied not only to cockroaches, but also to mantids.
