Hypselostoma tertiusfrater Gojsina & Pall-Gergely 2025, nom. nov.
Creators: name: Gojšina, Vukašin
name: Hunyadi, András
name: Sutcharit, Chirasak
name: Tongkerd, Piyoros
name: Auffenberg, Kurt
name: Grego, Jozef
name: Vermeulen, Jaap J.
name: Reischütz, Alexander
name: Páll-Gergely, Barna
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Stylommatophora
Hypselostomatidae
Hypselostoma
Hypselostoma tertiusfrater

description: Hypselostoma tertiusfrater Gojšina & Páll-Gergely nom. nov.
Figs 224 J, 238, 239
Boysidia (Dasypupa) salpinx Thompson & Dance, 1983: 106–107, figs 2–8.
Boysidia salpinx — Dumrongrojwattana and Assawawattagee 2018: 216; Marzuki et al. 2021: 103–104, figs 45 E, 50 B; Inkhavilay and Sutcharit 2024: 441, fig. 1 D.
Type material examined.
Malaysia • holotype; UF 35944 • 33 paratypes; from the type locality; UF 36281 / 2, used for SEM by F. G. Thompson, destroyed; UF 35946 / 31.
Additional material examined.
Malaysia • 3 shells; Borneo, Sarawak, 4 th Div., Niah Caves Nat. Park, near Painted Cave; Aug. 2002; coll. PGB • 24 shells; Borneo, Sarawak, SE portion, Bau area, Gunong Kapor, entrance to main cave; UF 35945 • 397 shells; Borneo, Sabah, ca 20 km upstream from Simatuoh, E side of Sapulut R., Batu Punggul; 16. May 1988; D. K. Dorman leg; locality code DKD- 91, UF 196670 • 190 shells; Borneo, Sarawak, Fourth division, Niah Caves National park, summit of Gunong Subis, SE Batu Niah; 03°48'N, 113°46′E; 29 Apr. 1988; D. K. Dorman leg.; locality code DKD- 77, UF 196488 • 15 shells; same data as previous; UF 196487 • 1 shell; Borneo, Sabah, ca 20 km upstream from Simatuoh, E side of Sapulut R., Batu Punggul; 04°38.8'N, 116°36.7'E; 16. May 1988; D. K. Dorman leg.; locality code DKD- 90, UF 196667 • 91 shells; same data as previous; locality code DKD-091; UF 196669 • 26 shells; Borneo, Sarawak, SW portion, S of Serian, E side Gunong Selabor, main entrance Lobang Batu cave; UF 35948 • 25 shells; Borneo, Sarawak, SW portion S side Gunong Selabor, S of Serian; UF 35947 • 3 shells; Sabah, ca. 25 km W Kunak, Baturong Caves; 04°37'N, 118°09'E; 12. Jun. 1988; David K. Dorman leg.; locality code DKD-102; UF 196829.
Type locality.
“ Gunong Subis, limestone massif about 40 mi SW of Mira, Niah area, Fourth Div., Sarawak, Borneo, 03°51'N, 113°45'E ”.
Differential diagnosis.
This species is clearly different from the two congeners from Borneo (H. paini and H. procerum) by its depressed-conical shell (vs conical) and a wider umbilicus.
Etymology.
The specific epithet is made of tertius meaning third and frater meaning brother, given the fact that this is one of three Hypselostoma species described from Borneo.
Distribution.
This species in known from Sarawak and Sabah, Borneo.
Remarks.
Boysidia salpinx F. G. Thompson & Dance, 1983 is moved to the genus Hypselostoma herein, and thus, becomes a secondary homonym of Hypselostoma salpinx (van Benthem Jutting, 1961). Therefore, Hypselostoma tertiusfrater nom. nov. is proposed as a replacement name.
description: Published as part of Gojšina, Vukašin, Hunyadi, András, Sutcharit, Chirasak, Tongkerd, Piyoros, Auffenberg, Kurt, Grego, Jozef, Vermeulen, Jaap J., Reischütz, Alexander & Páll-Gergely, Barna, 2025, A new start? Revision of the genera Anauchen, Bensonella, Gyliotrachela and Hypselostoma (Gastropoda, Eupulmonata, Hypselostomatidae) of Southeast Asia with description of 46 new species, pp. 1-338 in ZooKeys 1235 on pages 1-338, DOI: 10.3897/zookeys.1235.145281