Noun | 1. | ![]() dictyopterous insect - cockroaches and mantids Blattaria, Blattodea, suborder Blattaria, suborder Blattodea - cockroaches; in some classifications considered an order Asiatic cockroach, blackbeetle, Blatta orientalis, oriental cockroach, oriental roach - dark brown cockroach originally from orient now nearly cosmopolitan in distribution American cockroach, Periplaneta americana - large reddish brown free-flying cockroach originally from southern United States but now widely distributed Australian cockroach, Periplaneta australasiae - widely distributed in warm countries Blattella germanica, Croton bug, crotonbug, German cockroach, water bug - small light-brown cockroach brought to United States from Europe; a common household pest giant cockroach - large tropical American cockroaches |