First record of the Peters's Pipistrelle Hypsugo petersi (Chiroptera, Vespertilionidae) from China and an updated identification key to Chinese Hypsugo.

In July 2025, one small vespertilionid bat was collected from a building of Jinguang Temple Provincial Nature Reserve, Dali, Yunnan, China. Based on integrative analyses of morphological and morphometric characters, together with phylogenetic evidence based on the mitochondrial cytochrome b (Cytb) gene, we identified the specimen as Hypsugo petersi. Previously, this species has been documented only in Borneo and the Philippines; therefore its discovery represents the first record of H. petersi in China and the Asian mainland. Furthermore, an identification key to all Chinese Hypsugo species is presented to facilitate accurate species identification and to support future biodiversity surveys and conservation management.