横断山区蚜虫区系的组成和特点

COMPOSITION AND CHARACTERS OF THE APHID FAUNA IN HENGDUAN MOUNTAINS REGION, CHINA

研究了横断山区蚜虫区系的组成和特点。横断山区共有蚜虫 11科 6 9属 12 5种 ,以东洋区、特有种类占优势。蚜虫区系古北成分和东洋成分充分交融 ,特有种类丰富 ,区系组成复杂多样。对该区蚜虫的分布进行了初步分析 ,特有种分布不均衡 ,水平主要分布在滇西北的丽江和玉龙雪山地区 ,垂直分布在海拔 30 0 0～ 32 0 0m ,是特有种丰富度最高的地带。此外 ,对跨古北和东洋区分布种类的东亚起源进行了初步探讨。

This paper studies composition and characters of the aphid fauna of Hengduan Mountains Region. There are 125 species, which lie in 69 genera and 11 families in Hengduan Mountains Region, and the Oriental species and the endemic species are preponderating. The aphid fauna in the region has the following basic characteristics: the abundant blending of Palaearctic and Oriental species, rich in endemic species, having complicated fauna components, and so on. In the meantime, the distribution of aphids in Hengduan Mountains Region is primarily analysed here. It was concluded that the distribution of the endemic aphid species is imbalance and regional, mostly in Lijiang and Yulong Snow Mountains Region, and in 3?000- 3?200?m vertical zone. Besides, the paper simply discussed origin of some species in East-Asia.