Method for breeding Plevus nevus by using Corcyra cephalonica larvae as alternative hosts

The invention belongs to the technical field of biological prevention and control of agricultural pests, and particularly relates to a method for breeding Plevus nevus by using Corcyra cephalonica larvae as alternative hosts. The method comprises the following steps: S1, putting 5-7-year-old rice moth larvae into a parasitic appliance, and then putting 2-15-day-old suspended cocoon bees for parasitism, so that the quantity ratio of the suspended cocoon bees to the rice moth larvae is (1: 5)-(1: 20); s2, after parasitizing for 8-36 hours, taking out the female nevus molluscus, and continuing to feed the parasitized rice moth larvae until the filial generation nevus molluscus comes out of the rice moth larvae to cocoon; s3, collecting bee cocoons of the filial-generation suspended cocoon by using a glass tube, and putting the collected bee cocoons into an incubator for eclosion; and S4, collecting adult slenderus nevus after eclosion by using a mesh cage. The method has the advantages that the alternative host