This paper describes a new species collected from Cangyuan Wa Autonomus County, Yunnan Province, China, in July 2020: Heizmannia (Heizmannia) cangyuanensis sp. nov.. The main distinguishing features of the new species are as follows: white scales on the ventral side of the basal proboscis; anterior pronotums with all white scales; ventral plates Ⅲ-Ⅵ are all white; the middle lobe of the ventral plate of segment Ⅸ has no scales, with numerous and large the ventral middle teeth in the aedeagus, as well as a finger-like protrusion on the lateral apex of gonostylus. There was no significant difference between the morphology of its larvae and that of Hz. menglianensis larvae. All specimens were preserved in the Mosquito Collection of Yunnan Institute of Parasitic Diseases.