1 发生概况龙眼角颊木虱(Cornegenapsylla sinica)是龙眼嫩梢期的一种主要害虫,在我区1年发生6代。若虫滞育现象明显,大部分二龄若虫进入滞育阶段:秋、冬两代(5、6代)进入越冬状态,到了翌年2月下旬绝大多数若虫进入活动期,3月上旬若虫开始羽化为第一代成虫,但各世代都有部分滞育的虫源参与,造成世代重叠。角颊木虱的发生期与龙眼的抽梢期基本上相吻合,对龙眼春梢和秋梢的 1 Occurrence situation Cornegenapsylla sinica is a major pest of longan shoots, occurs in our district for 6 generations in one year. Most of nymphs enter the stage of diapause. The autumn and winter generations (5,6 generation) entered the wintering state, and the majority of nymphs entered the active stage in late February the following year. In early March, the nymphs began to emerge For the first generation of adults, but each generation has some diapause insects involved, resulting in overlapping generations. Occurrence of psyllid louse and the flesh shoots basically coincide, on the longan spring shoots and autumn shoots