Three new species of Amphibulus Kriechbaumer (Hymenoptera, Ichneumonidae, Phygadeuontinae) from China with a key to species known from the Oriental and Eastern Palaearctic Regions

Three new species of Amphibulus Kriechbaumer, 1893, collected from the northern border of the Oriental part of China, are described and illustrated: A. areolaris Sheng, Li & Yang, sp. nov., A. rufithorax Sheng, Li & Yang, sp. nov. collected from Guizhou province, and A. guiicus Sheng, Li & Sun, sp. nov. collected from Guangxi Zhuang Autonomous Region. A key to the species of the genus known in the Oriental and Eastern Palaearctic Regions is provided.