Chilocorus kuwanae is one of the main natural enemies of Bambusaspis miliaris in Dendrocalamopsis oldhamii.The feeding functional response of the adult Chilocorus kuwanae preying on Bambusaspis miliaris belonged to Holling-Ⅱ disc equation.The searching effects decreased with increasing density of Bambusaspis miliaris.The daily upper limit of the adult Chilocorus kuwanae preying on Bambusaspis miliaris can be calculated,being 107.1 heads of the 1st instar larvae,80.7 heads of the 2nd instar larvae ,and 56.0 heads of the female adults.The best daily searching densities of the adult Chilocorus kuwanae preying on Bambusaspis miliaris were 35.8 heads of the 1 st instar larvae,27.0 heads of the 2nd instar larvae,19.2 heads of the female adults.These results were of great realistic significance to use the adult Chilocorus kuwanae to prevent Bambusaspis miliaris in Dendrocalamopsis oldhamii.%红点唇瓢虫Chilocorus kuwanae是绿竹Dendrocalamopsis oldhamii密竹链蚧Bambusaspis miliaris的一种主要天敌,该瓢虫成虫捕食密竹链蚧的功能反应属于Holling-Ⅱ型方程,其寻找效应随着密竹链蚧密度的增加而降低,用该方程计算可求出红点唇瓢虫成虫对密竹链蚧的日捕食上限:1龄若虫为107.1头,2龄若虫为80.7头,雌成虫为56.0头.红点唇瓢虫成虫对密竹链蚧的日最佳寻找密度:1龄若虫、2龄若虫与雌成虫分别为35.8、27.0、19.2头.这对生产上利用红点唇瓢虫成虫防治绿竹密竹链蚧具有现实的指导意义.
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