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当前位置: 首页 > 文章 > 茶尺蠖和灰茶尺蠖幼虫及成虫的鉴别方法 植物保护 2019 (4) 172-175
Position: Home > Articles > 茶尺蠖和灰茶尺蠖幼虫及成虫的鉴别方法 Plant Protection 2019 (4) 172-175

茶尺蠖和灰茶尺蠖幼虫及成虫的鉴别方法

作  者：
唐美君;王志博;郭华伟;殷坤山;肖强
单  位：
中国农业科学院茶叶研究所
关键词：
茶尺蠖;灰茶尺蠖;鉴别方法
摘  要：
茶尺蠖Ectropis obliqua和灰茶尺蠖Ectropis grisescens是茶园主要害虫,两者为近缘种,外形十分相似,难以区分.为了便于茶叶技术人员识别这两种尺蠖,本研究通过饲养观察,比较了这两种尺蠖幼虫和成虫的形态差异,提出了一种鉴别方法,即通过幼虫第2腹节背面八字形黑色斑纹的形态及该节上2对小黑点的位置进行幼虫鉴别,通过前后翅上外横线的形态进行成虫鉴别.采用分子鉴定对该方法进行了验证,结果表明该方法判别准确,且易于掌握,能准确区分茶尺蠖和灰茶尺蠖.本研究结果对这两种尺蠖的正确识别和田间防治十分有益.
作  者：
TANG Meijun;WANG Zhibo;GUO Huawei;YIN Kunshan;XIAO Qiang;Research Institute of Tea, Chinese Academy of Agricultural Sciences;Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture;
单  位：
TANG Meijun%WANG Zhibo%GUO Huawei%YIN Kunshan%XIAO Qiang%Research Institute of Tea, Chinese Academy of Agricultural Sciences%Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture
关键词：
Ectropis obliqua;;Ectropis grisescens;;identification method
摘  要：
Ectropis obliqua and Ectropis grisescens are the main pests in tea gardens. Since they are two sibling species, it is difficult to distinguish them by their appearance. In order to identify these two species, the morphological differences of the larvae and adults were carefully observed between the two species. Then an identification method was proposed based on their morphological characters. The larvae of the two species could be identified based on the shape of a pair of black strips and the location of two pairs of small black spots on the back of the second abdominal segment of the larva. The adult could be identified based on the form of the postmedian fascia on proala and underwing. According to the result of molecular detection, the morphological result was accurate. This method is easy to master and can distinguish the two species precisely. Therefore, it will be beneficial for the accurate identification and field control of the two-geometrid species.

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