探究鳞翅目昆虫在连城保护区的分布，分析其生物多样性，为甘肃连城国家级自然保护区的生态景观和病虫害防治提供科学依据。2018年7 — 8月在甘肃连城国家级自然保护区开展鳞翅目昆虫调查，采用样线-网扫法和灯诱法共捕捉昆虫2 416头，隶属17科126种。其中，蛾类2 055头，隶属于12科99种；蝶类359头，隶属于5科27种。本次鳞翅目昆虫调查与2003年第1次鳞翅目昆虫调查结果相比增加了3个科，分别是天蛾科(Sphingidae)、舟蛾科(Notodontida)和巢蛾科(Yponomeutidae)。分析结果显示，保护区内蛾类优势种主要为夜蛾科(Noctuidae)、尺蛾科(Geometridae)等，蝶类优势种主要为蛱蝶科(Nymphalidae)和粉蝶科(Pieridae)；采用灯诱法调查的蛾类昆虫在张家沟灯诱点昆虫的优势度指数最高；蝶类在小吐鲁沟和淌沟中的昆虫多样性指数最高。本次调查的数据为甘肃连城国家级自然保护区昆虫名录进行了补充，也为保护区的科研工作、病虫害防治提供基础参考依据。

To investigate the distribution and diversity of Lepidoptera in the Liancheng National Nature Reserve and provide a scientific basis for ecological landscape management and pest control, a survey of Lepidoptera insects was conducted in the Liangcheng National Nature Reserve in Gansu from July to August 2018. A total of 2 416 insects were captured, belonging to 17 families and 126 species, using both transect-net sweeping and light-trapping methods. Among them, 2 057 moths were identified across 12 families and 99 species, while 359 butterflies were identified across 5 families and 27 species. Compared with the first Lepidoptera survey conducted in 2003, this survey identified 3 additional families: Sphingidae, Notodontidae, and Yponomeutidae. According to the analysis, the dominant species of moths in the reserve were Noctuidae and Geometridae, and the dominant species of butterflies were Nymphalidae and Pieridae. The abundance index of moths captured by light-trapping was highest at the Zhangjiagou light-trapping site. The diversity index of butterflies was highest in Xiaotulugou and Tanggou.The results of this study enrich the insect species catalog of the Liancheng National Nature Reserve and provides a scientific basis for further scientific research and pest management within the reserve.

S433.4

国家林业和草原局华东调查规划院2025年度科技攻关项目(HDY25N008)。