Chen X, Xu H. A key to species of the genus Hylaeus (Hymenoptera: Colletidae) from mainland of China with descriptions of new species and new records. Zootaxa [Internet]. 2009 Jan. 9 [cited 2025 Apr. 5];1974(1):31–50. Available from: https://mapress.com/zt/article/view/zootaxa.1974.1.3