Zhang, Ruo-Nan, Cornelis Van Achterberg, Xiao-Xia Tian, Cheng-Yi He, and Jiang-Li Tan. 2020. “Sexual Variation in Two Species of Helorus Latreille (Hymenoptera, Heloridae) from NW China, With Description of Female of Helorus caii He &Amp; Xu”. Zootaxa 4821 (3). Auckland, New Zealand:570–584. https://doi.org/10.11646/zootaxa.4821.3.8.