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双带盘瓢虫是甘蔗绵蚜的主要天敌之一,其幼虫期可捕食甘蔗绵蚜580头,成虫每天可捕食126头。此种瓢虫在南宁一年可完成七个世代。世代重叠。以第六、七代及部份第五代成虫越冬。在21—24℃中,各虫态发育历期分别为:卵4.0天,幼虫9.7,天,蛹5.9天,完成一世代31.3天。雌虫产卵量一般为200—600粒。冬前采集此种瓢虫成虫保护饲养过冬及利用人工饲料大量饲养繁殖,在甘蔗绵蚜发生初期补充散放于蔗地,对控制绵蚜为害有一定作用。
The ladybugs, one of the main natural enemies of the sugar cane moth aphid, can catch 580 larvae of the sugar cane moth aphid, and the adults can catch 126 heads per day. This ladybug can be completed in Nanning for seven generations a year. Generational overlap. In the sixth and seventh generations and some fifth generation adults overwintering. At 21-24 ℃, the developmental stages of each stage were as follows: 4.0 days for eggs, 9.7 for larvae, 5.9 days for pupae and 31.3 days for one generation. Female fecundity is generally 200-600 tablets. Pre-winter collection of this Ladybug adults to protect the winter and the use of artificial feed a large number of breeding, in the early stages of Sugarcane cotton aphid replenishment loose in the sugarcane field, to control the cotton aphid damage have a role.