Abstract
Three species of laboratory-reared parasites of citrus blackfly,Aleurocanthus woglumiAshby, were released at Fort Lauderdale, Florida in 1976 following discovery of this citrus pest in residential properties there.Amitus hesperidumSilv. andProspaltella opulentaSilv. were recovered 6 weeks after release and sharp increases in the rate of parasitism were observed throughout the season. Seven months after the initial release, 100% parasitism of citrus blackfly pupae was observed at some release sites, and 95% of the original release sites were found positive for the parasite. Observations after 1 year showed significant levels of parasitism over a large area. The rapid establishment and increase of these parasite species indicate that environmental conditions and the host at Fort Lauderdale are suitable for these species and that they may well provide control of the pest.
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