Cockroaches Cockroaches range in size from a few millimeters to 8 cm. They are oval and flattened and the head is concealed under the pronotum.
Colours range from brownish, blackish, yellowish, to tawny.
They have long running legs. The wings may be well developed, reduced or absent. The antennae are long and hair-like and may be longer than the body. They have chewing mouthparts. Larvae and adults have chewing mouthparts.