A key to species of the genus Gastroserica Brenske of the China (Coleoptera, Scarabaeidae, Sericini), with the description of two new species and two new records for China

摘要

Based on a revision of the material housed in Chinese collections and a key to species of Gastroserica of China is provided. Two new species are described, habitus photographs, and illustrations of the genitalia are given: Gastroserica nigrofasciata sp. n. (from China: Guangxi and Guizhou Prov.), Gastroserica yunnanensis sp. n. (from China: Yunnan Prov.). Besides, illustrations of the genitalia of species mentioned in the key are provided. Additional distribution records of the Gastroserica species including an updated distribution map are given.