Nonhost status of lychees and longans to Caribbean fruit fly (Diptera : Tephritidae)

Field trapping of Anastrepha suspensa (Loew) in Groves of lychee, Litchi ch inensis Sonn., and longan Euphoria longana (Lour.), showed that fly populat ions were present in high numbers in May and early lune, and declined in la te June and July. In total, 34,016 fruits of Mauritius and Brewster lychee and Kohala longan were exposed to Caribbean fruit flies either in the labor atory or under natural conditions. No Caribbean fruit By larvae or eggs wer e recovered from any lychee or longan fruits in this study, whereas almost all of the control guava fruits had infestations. Brewster and Mauritius ly chee and Kohala longan grown in Florida are not hosts to the Caribbean frui t fly.