Photographs of selected sampling sites. A CR16 (Juwangsan NP, Dalgikpo waterfall, sampling site of Wandesia cf. rara and Feltria kuluensis) B CR19 (Sobaeksan NP, stream, type locality of Atractides ermilovi sp. n.) C CR21 (Woraksan NP, stream, type locality of Torrenticola neodentifera sp. n.) D CR22 (Chiaksan NP, stream, sampling site of Wandesia reducta, Torrenticola neodentifera sp. n. and Atractides constrictus).