AbstractIn August 5–14, 1989 the authors collected many phlebotomine sandflies in natural lime‐stone caves from Yiwu and Mengyuan, Xishuangbanna, Yunnan Province. Among them 10 species of phle‐botomines were found, i.e.,Idiophlebotomus longiforceps, Phlebotomus yunshpis, P. trunmcsis, P. kiangsuensis, P. stantoni, Serptomyia rudnicki, S. barraudi, S. iyngari, S. koloshanensis, andS. bailyi(He and Leng 1991). Additionally a new species of the subgenusNeophlebotomusis described asSergentomyia (Neophlebotomus) kueichenaein honour of Professor Kueich