Among the phlebotomine specimens collected from Yunnan, China, in 1984, a new species of the subgenus Adlerius Nitzulescu 1931 was identified. The name Phlebotomus fengi is proposed for this species, in memory of the late medical entomologist, Professor Lan Chow Feng. Although generally similar to P. longiductus, P. fengi had distinct pharyngeal armature, style spines, paramere and aedeagus. Phlebotomus fengi may be a vector of visceral leishmaniasis in southern China.