中文摘要：

目的调查宁夏六盘山国家级自然保护区有瓣蝇类的种数、物种多样性及区系特征。方法采用生物多样性研究方法及昆虫分类学原理与方法。结果宁夏六盘山国家级自然保护区有瓣蝇类有10科180属424种，其中寄蝇科无论在属级水平还是种级水平，均占有较大优势，分别占该保护Eft,知属数和种数的53．33％和43．16％。在区系分布中，古北界种140种，古北＋东洋界种192种，三界以上的广布种81种，分别占该地区分布种数的33．02％、45．28％和19．10％，特有种6种，占1．42％。多样性指数在属级水平和种级水平分别为1．48和1．57。结论宁夏六盘山国家级自然保护区有瓣蝇类具有物种多样性、区系成分多样性的特点，其区系成分以古北界＋东洋界成分相互渗透为主，古北界及其他区系成分共存的特征。

英文摘要：

Objective To survey the number of species, species diversity, and faunal characteristics of Calyptratae in Liupanshan National Nature Reserve of Ningxia, China. Methods The study was conducted by biodiversity analysis and insect taxonomy. Results There were 424 species, 180 genera, and 10 families of Calyptratae in the Liupanshan National Nature Reserve. Taehinidae, accounting for 53.33% and 43.16% of all known Calyptratae genera and species in this area respectively, were predominant at both genus and species levels. In terms of faunal distribution, there were 140 Palaearctic species, 192 Palaearctic and Oriental species, and 81 wide-distribution species which were distributed in three or more zoogeographic realms, accounting for 33.02%, 45.28%, and 19.10%, respectively, of all known species in this area. Besides, there were 6 indigenous species, accounting for 1.42%. The diversity indices at the genus and species levels were 1.48 and 1.57, respectively. Conclusion Species diversity and faunal diversity exist in Calyptratae in the Liupanshan National Nature Reserve of Ningxia. The faunal composition mainly includes Palaearctic and Oriental species, followed by Palaearetic species and other faunal components.