Pupinella Gray, 1850

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

4. Genus Pupinella Gray, 1850

Pupinella Gray, 1850: 33. Kobelt 1902: 291. Egorov 2013: 9.

Type species.

Cyclostoma pupiniforme Sowerby I, 1842, by original designation.

Diagnosis.

Shell with funnel- or gutter-like [= umbilical passage in Varga and Páll-Gergely (2017)] anterior canal forming a tube opening at both ends, appearing as a slit when observed from apertural view that is widened or slightly widened on outer margin.

Differential diagnosis.

Pupinella is most similar to Pupina in shell shape and the presence of both teeth and canals, but differs in having an umbilical passage or a funnel-like anterior canal forming a tube opening at both ends (Fig. 10A ; Varga and Páll-Gergely 2017). The comparison of the umbilical, columellar, and parietal views between Pupinella and Pupina is illustrated in Fig. 10 .

Remarks.

The most comprehensive compilation of members of this genus could be traced back to Kobelt (1902). This genus has two subgenera, the nominotypical subgenus and Pupinopsis H. Adams, 1866 ( Kobelt 1902; Egorov 2013). The subgenus Pupinopsis is diagnosed with a presence of a posterior canal, as in the type species Pupinella swinhoei H. Adams, 1866 (see Hwang 2014: fig. 1g, h). On the other hand, the posterior canal is absent in the subgenus Pupinella , as in the type species Pupinella pupiniformis (Sowerby, 1842) (see Varga and Páll-Gergely 2017: fig. 1a-c). The taxonomic works on Pupinella are sporadic (e.g., van Benthem Jutting 1963; Ueng and Chiou 2004) and there has been no taxonomic revision of this genus since then. Three species formerly in Pupina from Vietnam are now allocated to this genus (see below), and all four species from mainland Southeast Asia would belong to the subgenus Pupinopsis . A synoptic view of all four Pupinella species is given in Fig. 11 to provide the comparative size.

Figures

Figure 10. Umbilical, columellar and parietal views of A Pupinella mansuyi, specimen CUMZ 12148 from Pha Chu, Nan B Pupina artata from the Pupina artata species group, specimen CUMZ 12003 from Ban Ping Khong, Chiang Mai C Pupina godwinausteni sp. nov. from the Pupina arula species group, holotype CUMZ 12090 / 1 D Pupina aureola from the Pupina aureola species group, specimen CUMZ 12130 from Sra Morakot, Krabi.

Figure 11. Shells of Pupinella species from mainland Southeast Asia. A-G Pupinella mansuyi: A syntype of Eupupina mansuyi MNHN-IM- 2000 - 30756 from Deux-Ponts B syntype of Eupupina mansuyi MNHN-IM- 2000 - 36067 from Deux-Ponts C syntype of Eupupina mansuyi MNHN-IM- 2000 - 36068 from Quang-Huyen D syntype of Eupupina mansuyi RBINS MT 970 / 1 from Quang-Huyen E holotype of Pupinella frednaggsi NHMUK 20170285 F specimen CUMZ 12148 from Pha Chu Mount, Nan, and G specimen CUMZ 12149 from Pha Tub Cave, Nan H Pupinella sonlaensis, paratype ZRC. MOL. 9377 I-L Pupinella illustris I, J syntypes of Pupina illustris MNHN-IM- 2000 - 35842 from Tonkin K lectotype of Pupina tonkiniana MNHN-IM- 2000 - 35838 from Lang-Son et That-Khe, and L paralectotype of Pupina tonkiniana SMF 109932 / 10 from Tonkin: That-khe. Photo: A. Lardeur, P. Maestrati, MNHN (A-C, I-K), F. Trus, RBINS (D), S. K. Tan, ZRC (H).