Figure 21.Photographs showing the A type locality of Glyphidrilus vangthongensis sp. n.(arrow head) on a river bank of Sakulnothayan waterfall, Vangthong, Phitsanulok B Glyphidrilus vangthongensis sp. n. casts and C coloration of newly collected paratype CUMZ 3230 just after the first preservation step in 30% (v/v) ethanol.