摘要
柠条种子象甲(Apion sp.)在晋西北地区柠条林内发生严重,占总虫量的66.7～81.3%是当地柠条种子的主要害虫。本文描述了其形态学特征,生活史和生物学特性,并对柠条林内的虫口密度和寄生性天敌做了抽样调查。
Apion sp.,one seed pest of pea shrub was found and was preliminaryly studied in 1991 and in the north-west of shanxi Province by the author.The weevil feed on seeds inside pods of the pea shrub.The pod's damage rate can reach 66.7～81.3%.in this paper,the morphological description for each develop stage was given.Its life history and biological characters were studied.The population denseness was investigated in the forests.Some fungi(Beauve- ria),bacteria,as the natural disease agents caused the larvae and pupae death during the pest lives inside the pods.
