Abstract
The citrus psylla, Diaphorina citri, is a vector of citrus Likubin in Taiwan. It was reported to be effectively controlled by its nymphal parasitoid, Tamarixici radiata in Reunion Islands. Taiwan Agricultural Research Institute introduced the parasitoid from Reunion Islands for the control citrus psylla to reduce the transmission of citrus Likubin. A total of 64 adult parasitoids in 4 shippments was obtained from 1983 to 1986. Then totally 21,164 adults of T. radiata were propagated and released to 39 citrus orchards and common jasmine orange (Murraya paniculata) bushes in 12 counties during 1984-1988. Results revealed that T. radiata has successfully established in this island. T. radiata is significantly predominence over the indigenous, Diaphorencyrtus diaphorinae in central Taiwan. Fortunately, the hyperparasitism of the introduced parasitoid is bellow 1.0% at the present.
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