Abstract
BACKGROUND: The spider genus Argiope Audouin, 1826, comprises 88 species worldwide, including 23 species occurring in China. Two Argiope species were collected by the spider survey on Yarlung Zangbo Grand Canyon National Nature Reserve, Xizang, southwest China, conducted in 2023. NEW INFORMATION: Two species of the orb-weaver spider genus Argiope from Xizang, China are described, including a new species, A.beibeng Mi & Wang, sp. nov. (♂♀) and a known species, A.caesarea Thorell, 1897 (♂♀). The unknown male of A.caesarea is described for the first time.