Six new species of the genus Nitela Latreille (Hymenoptera, Crabronidae) from China, with a key to the Oriental species

This paper presents a systematic study on the Chinese species of the genus Nitela . Six new species from Yunnan, Hainan, and Guangdong Provinces are described: Nitela carinifrons , Nitela noncrenulata , Nitela punctidorsalis , Nitela transcarinata , Nitela tumidiscuta , and Nitela vecarinata . Diagnostic characters distinguishing these species from their congeners are provided. Additionally, three species are newly recorded from China: Nitela rugosa Williams, 1928, Nitela williamsi Menke, 1968 and Nitela domestica (Williams, 1928). A key to the Oriental species of the genus Nitela is provided.