Rhaphaulus ascendens Sykes, 1903

Jirapatrasilp, Parin, Sutcharit, Chirasak & Panha, Somsak, 2022, Annotated checklist of the operculated land snails from Thailand (Mollusca, Gastropoda, Caenogastropoda): the family Pupinidae, with descriptions of several new species and subspecies, and notes on classification of Pupina Vignard, 1829 and Pupinella Gray, 1850 from mainland Southeast Asia, ZooKeys 1119, pp. 1-115 : 1

Rhaphaulus ascendens Sykes, 1903

Fig. 13D

Rhaphaulus ascendens Sykes, 1903: 196, 197, pl. 20, figs 11, 12. Type locality: Patalung [Phatthalung Province, Thailand]. Laidlaw 1928: 33. Hemmen and Hemmen 2001: 40. Páll-Gergely et al. 2014: 572. Thach 2018: 21, figs 126-129, Phang Nga District, South Thailand. BEDO 2017: 95. Sutcharit et al. 2018: 157, figs 5-11d, 5-13k.

Type material examined.

Syntype UMZC I.100025 (1 shell; Fig. 13D ) from Patalung, Malay Peninsula.

Diagnosis.

Shell ovate; body whorls not bulging. Tube cylindrical and pointing straight upward.

Differential diagnosis.

Rhaphaulus ascendens can be distinguished from all other species from mainland Southeast Asia by having body whorls that are not bulging and a cylindrical tube pointing straight upward.

Distribution.

Southern Thailand ( Páll-Gergely et al. 2014; Thach 2018).

Remarks.

No material of this species was found during this survey. Laidlaw (1928) treated R. ascendens as a junior subjective synonym of R. lorraini . However, by comparing the type specimens of both species, the body whorls of R. ascendens are not bulging, whereas the distribution ranges tend to overlap. Thus, the validity of R. ascendens needs further confirmation.

Figures

Figure 13. A, B Rhaphaulus lorraini: A syntype NHMUK 20130454 from Pulo Penang and B specimen CUMZ 12162 from Kiriwong (Tham Kope) Temple, Phang Nga C Rhaphaulus perakensis, syntype NHMUK 1897.3.15.41 from Larut, Perak D Rhaphaulus ascendens, syntype UMZC I. 100025 from Patalung, Malay Peninsula E, F Rhaphaulus tonkinensis E holotype HNHM 98757 and F specimen CUMZ 12163 / 1 from Luang Cave, Chiang Rai. Photo: B. Pall-Gergely (E)