The northern limit of Reticulitermes, sp. is about 40 N latitude. In the U.S., this would be a line from about Philadelphia to just south of San Francisco. The northern limit of Coptotermes, sp. is about 33.5 N latitude. In Mississippi, this latitude corresponds to West Point on the East to just south of Cleveland on the west. It takes approximately eight years for a Formosan colony to complete a generation cycle from the pairing of the primary reproductives to the first appearance of alates in the colony.
China uses a mirex bait or chemical soil barriers as control methods.
This is approximately ten x forty inches. The major distribution of termites in China is in the Southeastern part of the country, and this area is somewhat more tropical than Mississippi. Some of this area is below 30 N latitude. The Formosan does not appear to do well in nature above 33.5 N latitude, and this may explain why the Formosan infestation in Memphis has not expanded, at least as far as we know. Memphis is at approximately 35 N latitude.