Four new species and three new country records for the Cryptocephalus trifasciatus group (Coleoptera: Chrysomelidae: Cryptocephalinae) from China

Four new species of the subgenus Cryptocephalus Geoffroy, 1762 are described from China: Cryptocephalus (s. str.) bimaculatithoracalis Duan, Wang & Zhou, sp. nov. from Yunnan, C. (s. str.) langxianus Duan, Wang & Zhou, sp. nov. from Tibet, C. (s. str.) wenquanensis Duan, Wang & Zhou, sp. nov. from Yunnan, and C. (s. str.) zhangi Duan, Wang & Zhou, sp. nov. from Yunnan. Three species are recorded for the first time from China: C. (s. str.) flavicinctus Jacoby, 1892, C. (s. str.) laosensis Pic, 1928, and C. (s. str.) sexsignatus (Fabricius, 1801). High quality color images and line drawings of adult habitus, aedeagus and other important structures are provided for the new species and the new country record species. All the types of the new species are deposited in the collection of Institute of Zoology, Chinese Academy of Sciences (IZ-CAS).