夜蛾科昆虫区系研究Ⅱ.中国各省区夜蛾的分布及相似性分析

Studies on the Fauna of Noctuidae Ⅱ.Distribution and Similarity of Noctuidae in China

中国夜蛾共有20亚科845属3751个有效种。这些种类有4种区系成分,其中东亚成分占优势,占总数的51.35%,东洋成分占25.51%,古北成分18.45%,广布成分仅2.27%。夜蛾在全国各省区的分布与区系结构各不相同,台湾、云南、西藏、四川、湖北、河南、湖南、浙江、新疆等是夜蛾物种丰富的省区。东亚成分在除东北、西北、华南以外的省区都是优势类群。多元相似性聚类分析结果显示,台湾和华中关系密切于华南;内蒙古和东北区的关系密切于西北;河南、湖北、陕西、甘肃、安徽、江苏6省聚为一个"秦岭淮河区",这个新分布区的特点是,东亚成分占优势;古北成分和东洋成分相等;古北东洋两界的分界线横贯全区。

3 751 noctuids species belonging to 845 genera of 20 subfamilies in China have been reported. They fall into four faunal elements ： Eurytopie, Palaearctie, Oriental and East Asian. The East Asian element is the predominant one, making up 51.35 % of the total. The Oriental, the Palaearctic and the Eurytopic takes 25.51%, 18.45 % and 2.26 % respectively. There are clear differences in distribution and fauna organization of noetuids in different provinces. The provinces rich in noctuid species are Taiwan, Yunnan, Xizang, Sichuan, Hubei, Henan, Hunan, Zhejiang, Xinjiang. Multivariate similarity analysis indicates that the distribution of noctuids in Taiwan is close to that in the Central-China Region. The distribution in Inner Mongolia is close to that in the North-East Region. A new region was nominated as ＂Qinling- Huaihe Region＂ which includes Gansu, Shaanxi, Henan, Hubei, Anhui and Jiangsu. In this new region, East Asia element is predominant, and Palaearctie element is equivalent to the Oriental element.