The parasitizing rate and pupae weight which were bred in the larvae of the 1st instar were the lowest but the mortality rate after parasitizing was the highest.

• 寄生蜂对1龄寄主幼虫的寄生率以及1龄粘虫育出的茧重均是三个龄期寄主中最小的,但死亡率却是三者间最高的。