三角新小卷蛾 （ Ｏｌｅｔｈｒｅｕｔｅｓ ｌｅｕｃａｓｐｉｓ Ｍ ｅｙｒｉｃｋ） 是龙眼、荔枝抽梢期主要害虫之一。室内自然变温下饲养： 春季日均温在２４２℃ 时， 卵期 （平均， 下同） ７５ ｄ、幼虫期１５４ ｄ、蛹期７３ｄ、产卵前期１７ ｄ， 全世代历期共３１９ ｄ； 秋季日均温在２８６℃时， 全世代历期为２４８ ｄ。在福州地区龙眼园年发生７～８ 代， 以幼虫在叶包中越冬。文章首次报道该虫在福建省龙眼园为害特点、生活习性、天敌种类及防治方法等。 Olethreutes leucaspis M eyrick is one of the major pests of longan and litchi plants. Indoor natural temperature feeding: average daily spring temperature of 24  2 ℃, the egg stage (average, the same below) 7  5 d, larvae 15  4 d, pupal stage 7  3d, pre-oviposition 1  7 d , With a total of 319 d of the whole generation. In the autumn, when average daily temperature was 286 ℃, the whole generation period was 248 d. Longyan Park in Fuzhou area occurs 7 to 8 generations, larvae wintering in the leaf package. The article reports for the first time that the pest insects in Fujian Province Longyan Park damage characteristics, habits, natural enemies and control methods.