Nais communis Piguet. Chen 1940: 33 –34; Liang 1964: 644, 1979: 274; Wang 2002: 83 –84; Cui 2008: 61.
Material. Yarlung Zangbu River: ST 5, 2 spms. Lhasa: ST 8, 3 spms; ST 9, 1 spm; ST 10, 9 spms; ST 11, 7 spms; ST 12, 6 spms; Niyang River: ST 29, 5 spms; ST 32, 3 spms; Lake Nmco: ST 57, 12 spms. Lalu Wetland: ST 60, 13 spms.
Remarks. Cosmopolitan. First record from Tibet.