南岳蝶类区系构成及垂直分布

通过调查发现 ,南岳共有 1 1 7种蝶类昆虫。区系分析结果表明 ,南岳蝶类以东洋成分为主 ;南岳蝶类的垂直分布从山麓到山顶 ,随着海拔的升高 ,东洋种类递减 ,古北成分逐渐增多 ,尤以海拔 85 0m以上更加明显 ;在海拔 1 2 5 0m以上 ,东洋界种被古北及古北跨区种所替代。

Faunistic structure and vertical distribution of butterflies in Nanyue

In the field investigation daring 2000～2002, a total of 117 species of butterflies were recorded in Nanyue,Hunan Province.Faunistic analysis shows that the assemblage of these speeies belongs to the components of the Oriental Region.The vertical distribution in the area suggests that the Oriental species gradually decrease in abundance with increasing of elevation but palaearctic species increase,especially above 850 m. Palaearctic and across-Palaearctic species substituted for Oriental ones above 1?250 m.