为研究天敌对龙眼害虫的控制作用，以龙眼角颊木虱为研究对象，在实验室研究红星盘瓢虫和小毛瓢虫对龙眼角颊木虱的捕食功能反应。结果表明，2种天敌瓢虫对龙眼角颊木虱的捕食功能反应模型均属Holling Ⅱ型，对猎物的捕食量(Na)都是随着猎物密度(N)的增加而增加，而对猎物的捕食量(Na)和寻找效率(a)均随着龙眼角颊木虱虫龄的增加而降低，处理时间(Th)延长；红星盘瓢虫的寻找效率大于小毛瓢虫，处置时间则更短，在同一虫态既定猎物密度下，红星盘瓢虫的捕食量显著大于小毛瓢虫。

In order to study the control effects of natural enemies on pests in Longan orchards, the predation of Phrynocaria congener and Scymnus sp. on the Cornegenapsylla sinica were studied in laboratory. The results showed that the functional responses of the two predatory ladybirds on C. sinica were of Holling’s II. The capitia of C. sinica preyed by the two predatory ladybirds were both increased with the increase of prey density. With the increasing of age of C. sinica, the searching rate of the predatory ladybirds decreased, and its handling time became longer. Comparison of the two predatory ladybirds, the P. congener performed the higher searching rate and the shorter handling time. Given a certain number of the same age of C. sinica, the feeding capitia of P. congener was larger than Scymnus sp. did.