Clostophis neglectus (van Benthem Jutting, 1961 ) Páll-Gergely & Hunyadi & Grego & Reischütz & Buczkó & Vermeulen, 2020

Páll-Gergely, Barna, Hunyadi, András, Grego, Jozef, Reischütz, Alexander, Buczkó, Krisztina & Vermeulen, Jaap J., 2020, Clostophis Benson, 1860, is not a monotypic diplommatinid but a speciose hypselostomatid (Gastropoda: Eupulmonata), with descriptions of six new species, Raffles Bulletin of Zoology 68, pp. 350-368 : 363

Clostophis neglectus (van Benthem Jutting, 1961) , new combination

( Fig. 1 )

Hypselostoma laidlawi — van Benthem Jutting, 1949: 19, fig. 9. (partim)

Paraboysidia neglecta van Benthem Jutting, 1961: 36 , pl. 8, fig. 2a. [“Biserat Caves, State of Jalor”, and “Gua Che Yatin, Ulu Tembeling, Pahang”]

“ Hypselostoma laidlawi ” (referring to the figure in van Benthem Jutting (1949) as probably Systenostoma species) — Panha & Burch, 1999b: 125.

Diagnosis. A high conical Clostophis species with a strongly widened body whorl, a wide umbilicus, a strong parietal and a blunt palatal tooth.

Remarks. The small size, white shell, dense spiral striation and the presence of a parietal and a palatal tooth indicates that this species belongs to the genus Clostophis . Paraboysidia laidlawi ( Collinge, 1902) (originally described as Hypselostoma ), the species which C. neglectus had been confused with, should probably be classified into Acinolaemus based on the basal and two palatal teeth, and the separate angular and parietal lamellae. The latter trait is characteristic for Acinolaemus .

Figures

Fig. 1. Synoptic view of Clostophis species. A, Clostophis sankeyi (UMZCI.103320, holotype, copyright: The Trustees of the Natural History Museum, photo: Harry Taylor); B, Clostophis stochi (MZUF GC/49405, holotype, from the original description: Páll-Gergely & Jochum in Páll-Gergely et al., 2017); C, Clostophis infantilis, new species (MNHN-IM-2014-6401, holotype); D, Clostophis incurvus, new species (NHMUK 20191125, holotype); E, Clostophis platytrochus, new species (HNHM 104408, holotype); F, Clostophis multiformis, new species (NHMW 113273, holotype); G, Clostophis obtusus, new species (HNHM 104435, holotype); H, Clostophis koilobasis, new species (NHMUK 20191126, holotype); I, Clostophis neglectus (drawing from the original description: van Benthem Jutting, 1961); J, Clostophis proboscideus (holotype from the original description). Scale = 1 mm.