Cockroaches (Latin Blattoptera, = Blattodea) - a detachment of insects from an intruder of cockroaches (Dictyoptera). More than 7,570 species of cockroaches are known, including more than 4,640 species of cockroaches proper and 2,900 species of termites, which, according to modern concepts, are included in this detachment.
The origin of the word "cockroach" in Russian is not exactly established; According to Ryasyan, this word comes from the Chuvash. tar-aqan "escaping": Turk. täz - "to run away". According to Jacobson, it goes back to the derogatory use of the Turkic tarqan or tarxan - "dignitary", but there are other versions. In the Turkic languages there is also the word "tarka" - to disperse.