Hypselostoma chatnareeae (Panha & J. B. Burch, 2003) comb. nov.

Figs 186 C, 190, 223

Anauchen chatnaeerae Panha & Burch in Burch et al. 2003: 132–138, figs 2, 3.

Anauchen chatnaeerae — Tongkerd et al. 2004: 143, fig. 2; Panha and Burch 2008: 49–50, fig. 45; Dumrongrojwattana and Wongkamhaeng 2024: 323, fig. 7.

Type material examined.

Thailand • 3 paratypes; from the type locality; SMF 331447 .

Additional material examined.

Thailand • 1 shell; Tam Sua Hill, Utong, Suphanburi; 21 Dec. 2002; K. Okubo leg.; coll. PGB .

Type locality.

“ Tam Sua, on the limestone hill on the west side of Tam Sua Temple, Utong District, Suphanburi Province, 14°17'31"N, 100°7'31"E, 20 meters elevation, Thailand ”.

Differential diagnosis.

This species is not similar to any of its congeners. The shell shape (conical) and apertural dentition (one barrier on the parietal side) strongly resembles some Anauchen species (e. g., A. angthongensis) but the surface is granulated as in H. hungerfordianum and all whorls are keeled. See also under H. khmerianum .

Distribution.

Apart from the type locality, this species is also known from one more nearby locality.

Remarks.

Even though this species has high morphological similarities to some Anauchen species (e. g., A. angthongensis), the shell surface sculpture is characteristically granulated (as in H. hungerfordianum) which is the reason it is transferred to this genus.