稻苞虫腹柄姬小蜂Pediobius mitsukurii(Ashmead)属膜翅目寡节小蜂科,是我区直纹稻苞虫蛹期寄生天敌优势种。1974年以来田间调查,寄生率2.38—58.06%,1980至1981年连续十代平均寄生率16.85%。对抑制稻苞虫种群数量,减轻水稻受害有一定的作用。为保护利用这种天敌,自1980年起,通过田间调查和以直纹稻苞虫(下称稻苞虫)为寄主接种饲养,对该蜂生物学特性进行了初步观察研究。 Pediobius mitsukurii (Ashmead) belongs to the order of the genus Hymenoptera, and is a dominant species of parasitoids in the pupal stage. Field surveys since 1974 show a parasitic rate of 2.38-58.06%. From 1980 to 1981, the average parasitism rate of 16 generations was 16.85%. It has a certain effect on inhibiting the population of rice shellfish and alleviating the damage of rice. In order to protect and utilize these natural enemies, a preliminary observation on the biological characteristics of the bee was carried out through field investigation and inoculation of the three-dimensional insects (Bractsia japonica) as hosts in 1980.