Tachinid specimens (Diptera, Tachinidae) from Yintiaoling National Nature Reserve, Chongqing, Oriental China were collected and examined, two species are recognized and new to science, Billaea yintiaoling sp. nov., Leskia flavitugula sp. nov., and L. miranda Mesnil is newly recorded for China. Here their descriptions, illustration and keys to species of Chinese species of Billaea and Leskia are provided. The specimens in this study are kept in the Insect Collection, Shenyang Normal University, China (SYNU).

During our study of the Chinese Fauna of Diptera, many specimens from the subfamily Dexiinae were examined. One new species was recognized, Imitomyia wangi sp. nov. Additionally, five species, Actinochaetopteryx patellipalpis Richter, Chetoptilia puella (Rondani), Leptothelaira longicaudata Mesnil & Shima, Phyllomya takanoi Mesnil and Rutilia (Chrysorutilia) rubriceps Macquart, are newly recorded in China. Their descriptions, illustration and diagnoses are given.