(Sometimes included in order Orthoptera, sometimes in Dictyoptera, sometimes Blattodea)

Cockroaches have two pairs of wings with the front and hind wings of dissimilar structure, but usually have limited flight. The hind legs are long and slender for running and are usually very spiny. They are hemimetabolous.

Only about 1% of cockroaches are household pests.
American cockroach - Periplaneta americanaAmerican cockroach - Periplaneta americanaAmerican cockroach - Periplaneta americanaAmerican cockroach - Periplaneta americana