Hypselostoma cucumense Panha 1998

Hypselostoma cucumense Panha, 1998 Figs 111 L, 128, 154 Hypselostoma cucumensis Panha, 1998 b: 65–66, figs 1 b, 3. Hypselostoma cucumensis — Hemmen and Hemmen 2001: 41; Panha and Burch 2008: 90, fig. 77; Tongkerd et al. 2004: 143, fig. 2; Dumrongrojwattana and Wongkamhaeng 2024: 324, fig. 8. Material examined. Thailand • 35 shells; Phetchaburi Province, Khao Yoi, northeastern side of the mountain; 13°14.316'N, 99°49.493'E; 30 m a. s. l.; 24 Feb. 2015; A. Hunyadi leg.; coll. HA. Type locality. “ Limestone hills at Kangkrajan National Park, Petchaburi Province, 13°14′9″N, 99°49′43″E, 80 meters elevation ” (Thailand). Differential diagnosis. This species resembles H. adela in shell size, surface sculpture and colouration. However, in H. adela, the angular and parietal lamellae are separated, the barriers are generally stronger and the last whorl is always at least slightly descending (slightly ascending in H. cucumense). See also under H. populare sp. nov. and H. khaochongpran. Distribution. This species is known from the type locality and its immediate surroundings.