Specimens were collected by hand net or with Malaise traps. The studied specimens are deposited in the collections of College of Life Sciences, Northwest University, Xi’an (NWUX); Northwest A&F University Entomological Museum, Yangling, Shaanxi (NWAY); Zhejiang University Hymenoptera Museum, Hangzhou (ZJUH); General Station of Forest Pest Management, State Forestry Administration, Shenyang (GSFA); American Museum of Natural History, New York (AMNH); Naturalis Biodiversity Center, Leiden (RMNH); Museum national d’Histoire naturelle, Paris (MNHN); and Senckenberg Deutsches Entomologisches Institut, Müncheberg (SDEI).