Pincerna vanbuensis
Creators: name: Sang, Do Duc
name: Son, Nguyen Thanh
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Architaenioglossa
Alycaeidae
Pincerna
Pincerna vanbuensis

description: <i>Pincerna vanbuensis</i> (Bavay &amp; Dautzenberg, 1900) (Figs. 1, 3A–E, 6E; Tables 1, 2) <i>Alycaeus</i> (<i>Dioryx</i>) <i>vanbuensis</i> Bavay &amp; Dautzenberg, 1900a: 120 (type locality: Van-Bu = SƠn La Province, Vietnam). <i>Alycaeus</i> (<i>Dioryx</i>) <i>vanbuensis</i> – Bavay &amp; Dautzenberg, 1900b: 455, pl. 11, figs. 19–21. <i>Dioryx vanbuensis</i> – Kobelt, 1902: 340; Do et al., 2015: 120, fig. 2C. <i>Alycaeus vanbuensis</i> – Fischer &amp; Dautzenberg, 1904: 432; PállGergely et al., 2017: 10, fig. 3C; Inkhavilay et al., 2019: 13, figs 4C–E. <i>Pincerna vanbuensis</i> – Páll-Gergely et al., 2020: 184. <b>Material examined.</b> Type material. Tonkin, Van-Bu, leg. Dr. R. Bavay, MNHN-IM-2000-31798 (syntype) (Figs. 3A, 6E); Van Bu, Tonkin, RBINS 525448 (paratypes). <b>Additional material examined.</b> ZMHU/ 20, Vietnam, SƠn La Province, Thu ận Châu District, Co Mạ Commune, Copia Nature Reserve, steep limestone slope with dense disturbed vegetation, 21°21′25″N, 103°31′14″E, 1239 m a.s.l., col. D.S. Do &amp; T.H. Nguyen, 08 June 2013; ZMHU/ 11, Vietnam, SƠn La Province, Mai SƠn District, MƯ ờng Bằng Commune, Nà Hoi Village, limestone hill with degraded regrowth, 21°18′11″N, 104°02′16″E, 779 m a.s.l., col. D.S. Do &amp; T.L. Nguyen, 22 November 2013; ZMHU/ 23 (Figs. 3B, E), Vietnam, SƠn La Province, Thu ận Châu District, Bon Ph ặng Commune, &amp;Dstrok;ốm HƯ Ợn Village, 21°22′23″N, 103°46′19″E, 605 m a.s.l, limestone karst, col. D.S. Do &amp; T.D. Luong, 20 August 2013; ZMHU/ 5, Vietnam, SƠn La Province, Yên Châu District, Yên SƠn Commune, Chi &amp;Dstrok;ảy Cave, primary forest on limestone, 21°08′30″N, 104°10′29″E, 815 m a.s.l., col. D.S. Do &amp; X.H. Nguyen, 02 September 2017; ZMHU/ 4, Vietnam, Hòa Bình Province, Mai Châu District, Tân SƠn Commune, Bó Liêm Village, under rocks in old secondary forest, 20°10′29″N, 104°58′17″E, 553 m a.s.l., col. D.S. Do &amp; C. Vilachark, 07 January 2018; ZMHU/ 9, Vietnam, Ninh Bình Province, Cúc PhƯƠng National Park, limestone outcrops in shale bedrock of primary forest, 20°21′13″N, 105°54′22″E, 297 m, col. D.S. Do &amp; T.L. Nguyen, 19 August 2016; ZMHU/ 26 (Fig. 3C), Laos, Xieng Khouang Province, Khoune District, Nam Phan Commune, Pa Kha Village, limestone area near village, 19°31′59″N, 103°31′01″E, col. C. Vilachark, 26 July 2018; ZMHU/ 18 (Fig. 3D), Laos, Houaphanh Province, Xiengkho District, Na Tong Village, limestone hills, col. P.S.L. Ti Khun, 20 August 2018. <b>Diagnosis.</b> <i>Pincerna vanbuensis</i> is characterised by a small sized, globular shell with irregular, clearly visible ribs on R3. <b>Distribution.</b> This species is known from Vietnam (SƠn La, Hòa Bình, Quang Ninh, Ninh Binh Provinces) and Laos (Luang Namtha and Luang Phrabang Provinces) (Vermeulen &amp; Maassen, 2003; Inkhavilay et al., 2019). <b>Remarks.</b> Its type locality Van-bu most probably refers to “Vạn Bú” Province, which was established in 1895 and remained until 1904. This species clearly differs from <i>P. anceyi</i> and <i>P. costulosa</i> because its R2 is relatively long, while its R1 possesses clearly visible and regular spaced ribs. The operculum of three specimens have been examined. The inner surface of operculum is smooth, glossy and has no central nipple. The outer surface is relatively flat, with indistinct appressed multilamellae. <i>Pincerna vanbuensis</i> is a very variable species in terms of shell size, sculpture of R1 and R3, number of R2 ribs and the extension of the columella (see Tables 1, 2).
description: Published as part of <i>Sang, Do Duc &amp; Son, Nguyen Thanh, 2022, The land snail genus Pincerna Preston, 1907 (Gastropoda: Alycaeidae) from Vietnam and Laos, with description of a new species, pp. 364-375 in Raffles Bulletin of Zoology 70</i> on pages 369-372, DOI: 10.26107/RBZ-2022-0018, http://zenodo.org/record/7174164
description: {"references": ["Bavay A &amp; Dautzenberg P (1900 a) Diagnoses de Coquilles Nouvelles de l'Indo-Chine. Journal de Conchyliologie, 48: 108 - 122.", "Bavay A &amp; Dautzenberg P (1900 b) Description de Coquilles Nouvelles de l'Indo-Chine. Journal de Conchyliologie, 48: 435 - 460.", "Kobelt W (1902) Das Tierreich. Eine Zusammenstellung und Kennzeichnung der rezenten Tierformen. In Verbindung mit der Deutschen Zoologischen Gesellschaft herausgegeben von der Koniglich Preussischen Akademie der Wissenschaften zu Berlin. Mollusca: Cyclophoridae. R. Friedlander und Sohn, Berlin, 662 pp.", "Do DS, Nguyen THT &amp; Do VN (2015) A checklist and classification of terrestrial prosobranch snails from Son La, north-western Vietnam. Ruthenica, 25 (4): 117 - 132.", "Fischer H &amp; Dautzenberg P (1904) Catalogue des mollusques terrestres et fluviatiles de l'IndoChine orientale cites jusqu' a ce jour. In: Mission Pavie, Etudes diverses. Volume 3, pp. 390 - 450.", "Inkhavilay K, Sutcharit C, Bantaowong U, Chanabun R, Siriwut W, Srisonchai R, Pholyotha A, Jirapatrasilp P &amp; Panha S (2019) Annotated checklist of the terrestrial molluscs from Laos (Mollusca, Gastropoda). ZooKeys, 834: 1 - 166.", "Vermeulen JJ &amp; Maassen WJM (2003) The non-marine mollusk fauna of the Pu Luong, Cuc Phuong, Phu Ly, and Ha Long regions in northern Vietnam. A survey for the Vietnam Programme of FFI (Flora and Fauna International), 35 pp."]}