﻿AbstractFour new species ofDiplodermaare described from Sichuan and Yunnan provinces, southwestern China, based on an integrative taxonomic approach, combining morphological and genetic data. The first new species from Danba County, Sichuan Province, is morphologically most similar and phylogenetically closely related toD.flaviceps, but it can be diagnosed from the latter by having a relatively much shorter tail and by a genetic distance of 4.4% in theND2gene; the second new species from Muli County, Sichuan Province, is phylogenetically closely related toD.daochengense,D.yongshengense, andD.yulongense, but it can be diagnosed from the latter three species by having a pale yellow gular spot and by genetic distances of 5.6–6.7% in theND2gene; the third new species from Jiulong County, Sichuan Province, is morphologically most similar and phylogenetically closely related toD.angustelinea, but it can be diagnosed from the latter by having a relatively much longer tail and by a genetic distance of 2.8% in theND2gene; and the last new species from Weixi County, Yunnan Province, is phylogenetically closely related toD.aorun, but it can be diagnosed from the latter by having a pale yellow gular spot and by a genetic distance of 2.9% in theND2gene. Our work brings the number of species within the genusDiplodermato 46.