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在海南岛南部,腰果蛀果斑螟(Nephoptefyx sp.)一年发生9代。田间始见期为10—11月,末见期为7月中下旬。4—6月是该虫大发生为害期,田间虫果率为20～60％。 4—7月间完成一代所需时间雄虫为26～31天,雌虫28～36天;10—3月份完成一代雄虫需28～34天,雌虫30～36天。成虫产卵对果实的部位以及果实的发育阶段有明显的选择性。幼虫具转果为害的习性。蛹在树冠下土壤中呈不均匀水平分布。种群虫口的建立与田间结果量的增长同步,产量损失因果实发育阶段而异。田间中果态果实坚果受害最重,是重点保护目标。防治措施,目前以化学防治为主,有效药剂有敌杀死、速灭杀丁、杀虫双和乐果等,第一次喷药防治适期应在田间大量果实即将进入中果态之时,在乐东腰果植区通常为8月中下旬。第一次喷药后,连续用药2～3次,即可保护95％以上的果实免遭虫害。此外,结果早期摘除树上虫蛀果,收集地上落果及利用害虫潜伏场所进行毒杀,对降低害虫种群虫口有重要意义。
In the southern part of Hainan Island, Nephoptefyx sp. Occurs nine generations a year. Beginning of the field for the 10-11 months, the last period of late July. April to June is the pest damage occurred in the field, the rate of insect fruit 20 to 60%. April to July to complete the time required for a generation male 26 to 31 days, female 28 to 36 days; 10 to March to complete a generation of male need 28 to 34 days, female 30 to 36 days. Adult egg production on the part of the fruit and fruit development stage obvious selectivity. Larvae with fruit damage habit. Pupae were unevenly distributed in the soil below the canopy. The establishment of population insect population synchronizes with the increase of the amount of field results, and the yield loss varies according to the stage of fruit development. Fruit nuts in the field suffered the most damage, is the focus of protection goals. Prevention and control measures currently dominated by chemical control, an effective killing agent Kill, Kill kill Ding, insecticidal double and dimethoate, the first spraying should be in the field of spraying a large number of fruit is about to enter the fruit of the state , Ludong cashew plant usually in late August. After the first spraying, continuous medication 2 to 3 times, you can protect more than 95% of the fruits from pests. In addition, the results of the early removal of moth-eaten fruit trees, collecting ground fruits and vegetables and the use of pests to kill potential sites of insects, to reduce pest population insect population is important.