Hypselostoma muaklekense (Panha & J. B. Burch, 2002) comb. nov.

Figs 242 D, 253, 259

Paraboysidia muaklekensis Panha & Burch, 2002 c: 79–81, fig. 2.

Gyliotrachela muaklekensis — Panha and Burch 2008: 75–76, fig. 65; Dumrongrojwattana and Wongkamhaeng 2024: 324, fig. 8.

Type material examined.

Thailand • holotype; 1997; S. Panha leg.; CUMZ ver. 020 .

Type locality.

“ Tepitak mountain, Muaklek District, Saraburi Province, 14°36'57"N, 101 ' 15 ' 50 " E, 700 meters elevation ” (Thailand).

Differential diagnosis.

This species is most similar to H. modestum from which it can be separated by the wider umbilicus, three strong apertural barriers on the palatal side (two in H. modestum) and smaller dimensions (SH = 2.9–3.1 and SW = 2.3–2.7 in H. modestum while SH = 1.8–2.0 and SW = 1.4–1.5 in H. muaklekense). Hypselostoma frequens also has only two strong barriers on the palatal side, is less slender and larger (SH = 2.8–3.5, SW = 2.4–2.6).

Distribution.

This species is known only from the type locality.