松梢螟(Dioryctria sp)是云南松(Pinusyunnanensis F·)华山松(Pinus armandiF·)的一种主要害虫。云南分布地区相当广泛,为害也严重.已知昆明部份地区受害的幼树占65％;永胜林场占70％;蒙自黑山新村两地占60—70％。一般一株幼树有一个嫩梢受害,少数则有2—5个。受害的嫩梢顶端枯死,针叶桔黄,不能向上生长,只能在接近受害处的下部丛生侧枝,将来不能长成材,只能做薪炭材。松梢螟除为害嫩梢外,同时也为害球果,特别是七、八月间地盘松的 Dioryctria sp is a major pest of Pinus armandi F of Pinus Yunnanensis F. Yunnan is widely distributed and harmed seriously.It is known that 65% of young trees damaged in parts of Kunming, 70% of Yongsheng Forest Farm, and 60-70% of villages in Mengzi Montenegro. Generally a young tree has a shoot damage, a few have 2-5. Victims of the top of the shoot dead, needle orange, can not grow up, only in the lower part of the lesions near clusters of lateral branches, the future can not grow timber, can only do firewood. In addition to the harmless young stem borer damage, but also for cones, especially in July and August loose ground