Effect of Host Pupae Cryogenic, Anesthesia, Parasitoid‐to‐Host Ratios to <i>Scleroderma sichuanensis</i> the Percentage Parasitism and Numbers of Output

Biological control is one of the effective means of controlling forestry burrowing pests in a low-cost and efficient way. <i>Scleroderma sichuanensis</i>, an ectoparasitic wasp, exhibits significant potential in managing burrowing pests. Currently, the mealworm <i>Tenebrio molitor</i> pupae are mainly used to many insects large-scale indoor breeding of diet. Therefore, this study focused on the effects of cryogenically treated the mealworm <i>T. molitor</i> pupae for different times and anesthesia treatment on the percentage parasitism and the number of emergence of <i>S. sichuanensis</i>, optimum parasitism and emergence were achieved in the wasp with a parasitoid-to-host ratio of 2:1, anesthesia treatment of <i>T. molitor</i> pupae with ethyl ether fumigation for 1.5 h, and cold treatment of them at a temperature of -10°C. As a result, various methods of treating <i>T. molitor</i> pupae indoors were explored, and optimal conditions for indoor rearing were explored for the expansion of <i>S. sichuanensis</i>.