Abstract
DNA barcoding is an effective modern tool in taxonomy, evolutionary biology, and biodiversity research. Many new species have been discovered and described with DNA barcodes as part of their diagnostic features. We combined morphological examination and molecular species delimitation of the mitochondrial cytochrome c oxidase 1 (COI) gene using the automatic barcode gap discovery (ABGD) to investigate species boundaries. The genus Prochas Walkley (Hymenoptera, Ichneumonidae, Campopleginae) was first reported from China and is new for the Oriental and Eastern Palearctic regions. Using an integrative taxonomy method, two new species P. rugipunctata sp. nov. and P. striata sp. nov. are hereby described and illustrated. A key to the world species and a distribution map are provided.