6. Nais simplex Piguet, 1906

Nais simplex Piguet. Liang 1964: 645 –646, 1979: 274. Nais barbata Müller. Liang 1962: 16 –17.

Material. Lhasa River: ST8, 2 spms; ST9, 1 spm; ST10, 5 spms.

Remarks. Cosmopolitan (Brinkhurst & Jamieson 1971). First record from Tibet.