A geminivirus, the Digitaria Streak Virus (DSV) affects Digitaria sangtrinalis in Vanuatu. As this plant exists in certain foci of coconut foliar decay (FD), a disease with which a circular single-stranded DNA is associated, the possibility of these two diseases having a common identity was considered. A study of the vectorial aspects of these two diseases has shown that Myndus taffini (Cixiidae) is a vector of coconut FD and that it does not transmit DSV. Nesoclutha declivata (Cicadellidae) transmits DSV on Digitaria.