A new species of the genus Pheosia Hübner, 1819, Pheosia liwangi Prozorov, Schintlmeister & Müller sp. nov., from Xizang and Sichuan Provinces in China is described. The new species is compared with Pheosia gelupka Gaede, 1934; Pheosia buddhista (Püngeler, 1899); and Pheosia mayri Saldaitis, Prozorov, Morozov, Yakovlev, Müller & Dûda, 2024. Adults of both sexes, their genitalia and map of collecting localities are illustrated.