北京蜻蜓目昆虫名录及地理分布

为了解北京地区蜻蜓目昆虫多样性状况,自2008年至2010年在北京多个区县的小溪、水库、湖泊、河流环境进行多次针对蜻蜓的采集调查,获得了较全面的标本数据。采集地涉及延庆、怀柔、密云、门头沟、房山、平谷、昌平、大兴及市区公园绿地。通过网捕成虫及对稚虫的饲养,共采获蜻蜓目昆虫标本400余号。该文提供了北京蜻蜓目昆虫名录—9科41属62种（包括文献记载的3种）,其中包括北京新记录科1科及北京新记录种16种,对前人研究中鉴定的一些错误进行了更正,并对其地理分布进行了简要分析。研究表明：北京蜻蜓区系主要由古北成分构成,达53.2%;水体污染是导致北京平原地区蜻蜓种类减少的主要原因。

Catalogue of Odonata from Beijing and geographical distribution

In order to understand the biodiversity of Odonata insects from Beijing,specimens were collected by sweep net and naiad breeding from 2008 to of 2010.The collection sites include water areas from Yanqing,Huairou,Miyun,Mentougou,Fangshan,Pinggu,Changping,Daxing and downtown parks.A catalogue of 62 species of 41 genera of 9 families of Odonata from Beijing was provided(3 species recorded in literatures included) based on identification of more than 400 specimens and the geographical distribution of dragonflies is briefly analyzed.One family and 16 species are firstly reported for Beijing and some mistaken identifications are revised.The result shows the Palaearctic species are predominant in Odonata fauna from Beijing accounting for 53.2% and water pollution is the main reason leading to species decrease of Odotana from plain areas of Beijing.