Hypselostoma tridentatum Gojšina & Hunyadi & Sutcharit & Tongkerd & Auffenberg & Grego & Vermeulen & Reischütz & Páll-Gergely 2025, comb. nov.

Hypselostoma tridentatum (Panha & J. B. Burch, 2004) comb. nov. Gyliotrachela tridentatus Panha & Burch in Panha et al. 2004: 70–71, fig. 9. Gyliotrachela tridentata — Panha and Burch 2008: 86–87, fig. 75. Gyliotrachela tridentatus — Dumrongrojwattana and Wongkamhaeng 2024: 324, fig. 8. Material examined. Thailand • 2 shells; Srakeo Province, Plubpluengtong, Phloeng Thong Cave, Khao Phiap; 24 Dec. 2012; K. Okubo leg.; coll. PGB. Cambodia • Battambang Province, Phnum Proek District, Phnom Prampi Cave; 13°18.834'N, 102°36.490'E; 90 m a. s. l.; 10 Oct. 2023; A. Hunyadi, J. U. Otani leg., coll. HA. Type locality. “ Plubpluengtong limestone hills, Srakeo Province, 13°27'07"N, 102°12'49"E, 80 meters elevation ” (Thailand). Differential diagnosis. This species has fewer barriers in the aperture than H. khaowongkot which is the most similar species. It also does not have columellar lamella (present in H. khaowongkot) and lacks the strongly spiniferous surface of apertural barriers (also present in H. khaowongkot). See also under H. utongense. Distribution. This species is, apart from the type locality, also known from Phnom Prampi Cave in Battambang Province which is a first record from Cambodia.