Thus, one female can generate up to 35,000 offspring per year. This explains why large numbers of cockroaches sometimes seem to appear overnight. German cockroaches prefer kitchen and bathroom areas but will disperse to other rooms as their numbers increase. Because of its size, the American cockroach is the species most likely to be recognized in Maine. Up to two inches long, this insect is reddish brown with a light yellow band around the edge of the head shield.
Nymphs are similar to adults except that they lack a complete set of wings.
Females produce 58 egg cases, averaging 15 eggs per case, resulting in up to 800 offspring per year. American cockroaches may be found in any room of the house. Although cockroaches carry disease organisms, they are not known to transmit disease to humans. They do contaminate food and kitchen utensils with excrement and salivary secretions, leaving an unpleasant odor. Roaches move rapidly, disappearing quickly when discovered.