Evolutionary biology. Kinds of roaches pictured. How many house infesting and how many non. Little is known about the non pest species. American, German and oriental, brown banded Mantodea , Isoptera , and Blattaria are usually combined by entomologists into a higher group called Dictyoptera . Current evidence strongly suggests that termites evolved directly from true cockroaches, and many authors now consider termites to be an epifamily of cockroaches,   as Blattaria excluding Isoptera is not a monophyletic group. 
Secondarly wingless…wingless as adults which is rare in the world of blattaria. Aside from the famous hissing noise, some cockroaches (including a species in Florida) will make a chirping noise
Bringers of doom for the blattaria
300-400 offspring; evaniid comes in again
Cockroaches leave chemical trails in their feces as well as emitting airborne pheromones for swarming and mating. Other cockroaches will follow these trails to discover sources of food and water, and also discover where other cockroaches are hiding.