During April 1996, we were informed by the Department of Agriculture and Consumer Services of a possible new infestation of the Formosan subterranean termite, Coptotermes formosanus Shiraki, in a commercial building at the northwest corner of Highway 1 and State Road 836 in Miami, Florida (Fig. 1). This infestation, which is 2 blocks west of the Port of Miami, is about 10 km south of the currently known distribution of C. formosanus in southeastern Florida, and about 1.5 km south of the site of another introduced subterranean termite, Heterotermes species (Scheffrahn & Su 1995). A large number of alates swarmed in the front office of this building, and numerous foraging tubes similar to those of C. formosanus were found on the garage walls. Workers and soldiers were also collected from a nearby tree. A close examina-