Monatractides oxystomus (K. Viets, 1935)

Material examined. Doupengshan, Guizhou Province, China (26°23’1”N, 107°22’28E, 1090 m a.s.l.), stream, collected by Xinyao Gu, 2. X.2016, 2/2/0, No. GZ-TO-20161023–GZ-TO-20161026.

Habitat. Stream about 20 centimeters depth, 5 meters wide, located between the mountains and a farmland; with mayflies and leeches as associated fauna.

Remarks. The species was previously known from Sumatra, while reported by Guo & Jin (2005b) from China.

Distribution. China (Guizhou, Anhui, Hainan), (“ Atractides oxystomus ”, K. Viets 1935; Guo & Jin 2005b), Indonesia (“ Atractides oxystomus ”, K. Viets 1935; “ Torrenticola oxystoma ”, Lundblad 1971), Thailand ( Monatractides oxystomus, Pešić & Smit 2009b), India (Pešić et al. 2013, Pešić et al. 2019), Malaysia (Pešić & Smit 2014).