The elytra are dense, the hind wings are membranous, fold under the elytra. The elytra and wings are often shortened or completely absent. Legs with 5-segmented tarsus, all tibiae with spines
What are harmful:
Bacteria, mold and other potential sources of disease collect on the legs and bodies of cockroaches, which can get on dishes or human food, leading, for example, to symptoms of food poisoning. In addition, cockroaches can cause allergic reactions and even lead to asthma.