German cockroach
Body length between 2.2 to 1.1cm , its obvious feature is: Chest have two black zone veins, each cockroach could increase the number of 3.0000 one year. German roach can propagate the kind germs more than 40, such as parasite egg , Yi liver virus , infantile paralysis, with liver cancer relevant yellow plain in color etc. The reason that breeds so swiftly is hard to believe: Research discovered, German Cockroach like the environment that cooled in summer, warm in winter, room temperature is between 20 to 30 Celsius which is most conducive for growth. Open hospital, guesthouse, restaurant and the high-grade building of official business of central air-condition therefore all the year round, open family of air-condition even to become their settle land. German cockroach look for meal evening, conceal in daytime in each place in chink: Since body form is flat, it can crawl cross the chink of 1.6 millimeters, also spread through wall hole and door window chink; German cockroach like the place such as the socket of electrical equipment, copier and the computer in office, even window sill wraps , little chink of door, may inhabit a region go up 1000; German cockroach feeding habits is miscellaneous, "recipe" is extensive, nearly eat anything , it can meet each kind of environment.