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杨黄卷叶螟(Botyodes diniasalis Walker)是为害杨树的一种主要食叶害虫,近年来,南阳地区许多杨树幼林和苗圃受害严重,常把新梢叶片吃光变成秃顶和光枝,对林木的生长影响很大。我们从1977年开始对此虫作了部分观察,1979年开展了较系统的调查研究和一些田间防治试验,现将初步结果报导如下。一、形态特征:(一)成虫:体色鲜黄色,体长10—14毫米。下唇须褐色,雄虫腹部末端有黑毛丛。前翅中室中部有一褐缘肾形斑,其斑中问为白色。翅外缘呈较宽的灰褐色边。
Botyodes diniasalis Walker is one of the major leaf-eating pests that damage poplars. In recent years, many poplar young trees and nurseries in Nanyang have been seriously damaged. They often turn new shoot leaves into bald and light branches. The growth of trees has a great impact. We began to observe this pest partially in 1977 and conducted a systematic investigation and study and some field control trials in 1979. The preliminary results are reported below. First, morphological characteristics: (a) adult: body color bright yellow, body length 10-14 mm. Lower lip to be brown, male abdomen with black hair at the end of the plexus. In the middle of the front wing there is a brownish kidney-shaped spot, with white spots on it. The outer edge of the wing is a wide gray-brown edge.