Abstract: To study the aphid flora elements and its eco-geographical distribution in Qinghai Province, from July to October in 2014 and from May to October in 2015-2017, a systematic survey of the locusts was carried out in all the administrative districts of Qinghai Province via belt transect method. Combined with previous studies, a total of 111 species of locusts in Qinghai Province were counted, belonging to 39 genera in 7 families. The number of genera and species of the genus Arcypteridae were the most abundant (49 species of 12 genera), while those of the genus Pyrgomorphldae were the least (1 species in 1 genera). According to the position of locus from Qinghai in Chinese fauna, there were only species of Palaearctic realm (101 species) and Eurytopic species (10 species) distributed in Qinghai Province, accounting for 91.0% and 9.0%, respectively. An absolute advantage was possessed by species of Palaearctic realm. There were more endemic species (58 species), accounting for 52.3%. The order of locus species’ numbers in different habitats was, in descending order, the Hehuang Valley, the southeast of Qinghai, the Qingnan Plateau, the Qilian Mountains, the Qinghai Lake Basin, the Qaidam Basin. The highest proximity existed between the Hehuang Valley and the southeast of Qinghai, while the similarity coefficient between the of the Qingnan Plateau and the of the Qaidam Basin was the lowest.

Key words: locus, fauna, eco-geographical distribution； Qinghai