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栉须缟螟 Sybrida aproximans Teech.属鳞翅目螟蛾科,是柞树的重要害虫之一,对此虫国外研究甚少,国内尚未见报道。笔者1980、1984、1985年对此虫进行一些研究,现将结果整理如下,供参考。一、寄主与为害此虫寄生较单一.笔者在辽宁省调查,最爱食蒙古栎、辽东栎,其次是麻栎和外(木冈),有时亦取食槲栎和板栗。1980年在凤城调查,柞树被害率为56%;1984年四台子蒙古栎受害37%。一墩中刈一年生蒙古栎叶可全部被一卵块幼虫食光,2～4年树亦有1/3叶被食,因
Sybrida aproximans Teech. Is a Lepidoptera Pyralidae, is one of the important pests of oak tree, for which worms abroad little research, has not been reported in China. The author of 1980, 1984, 1985 some research on this worm, the results are summarized below, for reference. First, the host and the parasitic insect infestation than a single.In Liaoning Province, the author of the survey, the most popular eating Quercus liaotungensis, Quercus liaotungensis, followed by Quercus acutissima and the outside (Mukden), sometimes also eat quercus and chestnut. In Fengcheng in 1980, the survey showed that the damage rate of oak trees was 56%; in 1984, the oak trees of Sister Taiwan were 37% victimized. A mound of annual mulberry oak leaves can be all an egg larvae light, 2 to 4 years the tree has 1/3 of the leaves are eaten because