Hypselostoma pattalungense Panha & J. B. Burch, 2004

Hypselostoma pattalungense Panha & J. B. Burch, 2004

Figs 242 E View Figure 242 , 254 View Figure 254 , 259 View Figure 259

Hypselostoma pattalungensis Panha & Burch in Panha et al. 2004: 73–75, fig. 11. View in CoL

Hypselostoma pattalungensis View in CoL — Panha and Burch 2008: 97–98, fig. 83; Dumrongrojwattana and Wongkamhaeng 2024: 324, fig. 8.

Type locality.

“ Ko Si Ko Ha (Ko Na Thewada), Limestone Hill, Pattalung Province ” ( Thailand).

Type material examined.

Thailand • 3 paratypes; from the type locality; S. Panha leg.; SMF 331456 About SMF .

Additional material examined.

Thailand • 3 shells; Phattalung Province, 6.4 km E of Hwy. 4081, 1 km SW of Khao Chai Son; 7°27'N, 100°11'E; 50 m a. s. l.; 11 Apr. 1988; K. Auffenberg leg.; locality code KA-0648 ; UF 345066 GoogleMaps • 1 shell; same locality data as previous; UF 591338 GoogleMaps • 13 shells; Songkhla Province, 31.3 km NW Hat Yai , 1.2 km W of Hwy. 43; 7°10'N, 100°16'E; 80 m a. s. l.; 08 Apr. 1988; K. Auffenberg leg.; locality code KA-0636 ; UF 344933 GoogleMaps • 1 shell; same locality data as previous; 08 Apr. 1988; K. Auffenberg leg.; locality code KA-0635 ; UF 591337 GoogleMaps .

Differential diagnosis.

This species is most similar to H. fortunatum sp. nov., from which it differs by stronger and more numerous apertural barriers, separated angular and parietal lamellae as well as the higher spire.

Distribution.

This species is known from Phattalung and Songkhla provinces, Thailand.

Remarks.

Intraspecific variability is noticed on the appearance of the subcolumellar lamella, it can be present or completely absent.