【摘要】 报道了陇东子午岭林区天牛区系的研究，共编天牛标本870号，经鉴定为49种，隶属38属，天牛科的5个亚科，其中甘肃省新记录11种。区系分析表明：东洋界的种类4种，占总种数的8．2％；古北界的种类29种，占总种数的59．2％；跨古北、东洋两界的共有16种，占总种数的32．7%。显然古北界种类占优势。更多还原

【Abstract】 The present paper deals with the composition and fauna of longicorn family in Ziwu mountains of eastern Gansu. A total of 49 species, 38 genera of longicorn are identified, of which 11 species are new records in Gansu provice. Based on a preliminary analysis of 4 species appertain to the Oriental Region, making up 8.2 % of the collection. 29 species belong to the Palaearctic Region, making up 59.2 % of the tatal, and other 16 species of about 32.7 % are scattered widely in the two regions mentioned above.更多还原