One new species of Thymistida Walker, 1865, and two new records from Xizang, China (Lepidoptera, Drepanidae, Drepaninae).

Three species of Thymistida (Walker, 1865) were found from Drepaninae specimens in Linzhi, Xizang, including a new species of Thymistida motuoensisPan & Yang, sp. nov., two new records of Thymistida tripunctata (Walker, 1865) and Thymistida nigritincta (Warren, 1923) in Xizang, China. In this paper, the external morphology of adults, female and male genitalia were provided, and the identification characteristics were described in detail. The distribution of host plants and domestic and foreign are given. The specimens are preserved in the Institute of Plateau Ecology, Xizang Agriculture and Animal Husbandry University.