Camptocercus vietnamensis Than, 1980 .

A rare species encountered in three lakes (S7, S8, A1) and in a reservoir (S33). The first record for continental China. C. vietnamensis is a rheophilous species recorded in South-East Asia (Sinev 2011); in Hunan the species inhabits a littoral zone of large lotic water bodies. Distributed in Malaysia, Vietnam and Hainan (Sinev 2016). For detailed description see Sinev (2011).