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楝梢螟Eurhodope sp.*,属鳞翅目斑螟科。俗名钻心虫。幼虫蛀食嫩梢,而主梢被害后,萌生侧梢,造成过早分叉,树干弯曲,枝下高较低。所以,除严重影响树木的高生长外,还大大降低木材的工艺利用价值,有的树因萌生嫩梢被反复为害而引起整株死亡。已成为发展麻楝、红楝子等珍贵树种的严重障碍。为此,几年来我们在海南岛尖峰岭,对该虫的生活习性和防治进行了初步研究。一、分布和寄主树种楝梢螟在海南岛分布于琼山(十字路)、屯昌(枫木)、崖县(三亚)、昌江(坝王岭)、陵水(吊罗山)、乐东(尖峰岭)等地。在尖峰岭地区从海拔25米到800多米均有此虫为害。广东大陆分布于清远、广州(龙眼洞)。广西分布于南宁、龙州(大青山)。寄主树种已知有麻楝Chukrasia tabularis A.Juss大叶桃花心木Swietenia macrophylla king红楝子Toona sureni(Bl)Merr.小叶桃花心木Swietenia mahogani(L.)Jacg 岭南酸枣Allospondias(Pierre)stapf小果香椿Toona microcarpa(DC.)harms等。
Melilot albino stem Eurhodope sp. *, Is a Lepidoptera molitor. Common name hole worms. Larvae eaten young shoots, and the main shoot after the victim, the initiation of lateral shoots, resulting in premature bifurcation, trunk bending, lower branches high. Therefore, in addition to seriously affecting the high growth of trees, but also greatly reduce the timber value of the process of utilization, and some trees because the sprouting of young shoots were repeatedly harmful to cause the entire plant death. Has become a serious obstacle to the development of neem, red melia and other precious species. For this reason, we conducted a preliminary study on the living habits and prevention and control of the insects in Jianfengling, Hainan Island over the past few years. First, the distribution and host species Meliaeaptera in Hainan Island distribution in Qiongshan (Crossroads), Tunchang (Maple), Cliff (Sanya), Changjiang (Dam Wangling), Lingshui (Diaoluoshan), Ledong (Jianfeng Ling) and other places. In Jianfengling area from 25 meters above sea level to more than 800 meters have this pest damage. Guangdong is located in Qingyuan, Guangzhou (Longyear Cave). Guangxi is located in Nanning, Longzhou (Daqingshan). The host tree species known to have neem Chukrasia tabularis A.Juss mahogany Swietenia macrophylla king Toona sureni (Bl) Merr. Lobular mahogany Swietenia mahogani (L.) Jacg Lingnan jujube Allospondias (Pierre) stapf small fruit Toona microcarpa (DC.) Harms and so on.