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|Cockroaches (or simply
"roaches") are insects of the order Blattaria. This name derives from the Latin word for
Though cockroaches are generally considered pests, only about 30 species (less than 1%) infest urban habitats; 55 species in total live in the U.S. Among the most well-known pest species are the American cockroach, Periplaneta americana, which is about 30 mm (1.2 inch) long.
Cockroaches live in a wide range of environments around the world. Pest species of cockroaches adapt readily to a variety of environments, but prefer warm conditions found within buildings. 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. Thus, cockroaches can exhibit emergent behavior, in which group or swarm behavior emerges from a simple set of individual interactions.
Information Source / More Info: Wikipedia.org