西天目山昆虫区系初探

Primary Discussion on the Insect Fauna in Mt. West Tianmu, China

根据浙江省西天目山11目1147种昆虫,初步分析了该山的昆虫区系,介绍了该山昆虫在世界动物地理区和中国动物地理区划中的归属及其比例,比较了该山与国内外几个点昆虫种类的异同,分析了以该山为分布南北限的昆虫种类。据此试推断西天目山昆虫区系特征:属东洋区近北缘;由于独特的地理位置和自然条件,昆虫种类繁庶;得益于植物区系和层次结构复杂,天敌丰富和人为干扰极少,昆虫群落结构处于稳定的平衡状态,特殊的地形、植被和地史产生了大量的特有种、残留种和间断种。

In the present paper the insect fauna found in Mt. West Tianmu, Zhejiang province, is analysed, based on 11 orders 1147 species of insects. The types of insect fauna of the world and the Chinese insect geographical region and their percentages of each type are introduced; the similarity of insect found in some localities in or out of China with the mountain are compared; the south and north border of the insect's distribution at Mt. West Tianmu are also analysed. On these grounds specific faunal features are suggested as below: Mt, West Tianmu belongs to the fauna of the Oriental region and near the southen border of Palaearctic region; its insect fauna is very rich because of its proper geographical position and special natural condition; its insect community stands in stable equilibrum, which benifits by abundant plant flora, complicated series, plentiful natural enemies and very few interference by mankind; the special terrain, vegetation, geological history of the mountain make many endemic species, survival species and interrupted species.