甘肃省天蛾科昆虫的群落特征及区系分析

On Community Characteristics and Fauna of Sphingidae in Gansu

于1994—2013年间采集到甘肃省境内的天蛾科昆虫标本1 050号,经鉴定有天蛾85种及亚种(包括2个未定名种),隶属5亚科35属(其中分布于小陇山以南地区的属种占到甘肃省总属的91.43%、种数的88.24%),有4个甘肃省新记录种.云纹天蛾亚科为优势类群,有11属33种,属的优势度为31.43%,种的优势度为38.82%;透翅天蛾亚科有4属6种,属的优势度为11.43%,种的优势度为7.06%,为罕见类群.区系特点是:属于东洋界的物种有25种,占31.25%;属于古北界的物种有21种,占25.00%;两界兼有39种,占43.75%.结果表明,甘肃省在动物地理区划上属于东洋界向古北界的过度地带.由于甘肃省在动物地理区划上地跨东洋和古北两界,因此,天蛾科昆虫物种较为丰富.

In the years of 1994-2013,1050 specimens of Sphingidae insects were collected in Gansu.There were 85 species （including 2 species unnamed and 4 species newly recorded） which belonged to 35 genera of 5 sub-families,and the Sphingidae insects located in the south of Xiaolongshan mountain accounted for 91.43％ of the genera and 88.24％ of the species in Gansu.Ambulicinae was the dominant group,including a total of 33 species belonging to 11 genera,and the dominance of the genera was 31.43％ and that of the species was 38.82％.Sesiinae was a rare group,including 6 species belonging to 4 genera,and the dominance of the genera was 11.43％ and that of the species was 7.06％.An analysis of faunal insects shows that 25 species appertained to the Oriental Realm,making up 31.25 ％ of the collection,21 species belonged to the Palaearctic Realm,making up 25.00％,and the other 39 species （43.75％） were widely scattered in the two realms mentioned above.The results show that Gansu zoogeographically belongs to both the Oriental and Palaearctic realms and therefore boasts rich diversity of Sphingidae insects.