Live specimens of A, B Pollicaria mouhoti mouhoti: specimens A CUMZ 12166 and B CUMZ 12175 from Wang Daeng Cave, Phitsanulok C Pollicaria mouhoti monochroma, paratype CUMZ 1562 from Tam Pha Bing Temple, Loei D Tortulosa tortuosa, specimen CUMZ 12155 from Tham Suea Temple, Krabi E–H Pupina artata: specimens of E CUMZ 12006 from Pha Daeng Cave, Mae Hong Son F CUMZ 12008 from Tham Nam Pha Pha Ngam Temple, Lampang, and G, H CUMZ 12029 from Khao Tham Raet Temple, Chachoengsao showing the brown (G) and grey (H) shell morphs; All not to scale.