A checklist of trichopteran species in the middle and lower basins Jinsha River (southwestern China) is compiled for first time. upon collected materials. It recorded ten families, 13 genera, 23 were recorded. Among them, male a new Cheumatopsyche latisecta Ge & Sun, sp. nov., which can be diagnosed by its genitalia, described illustrated. In addition, nine other are time from China, six th...