Schistoloma inermis ( Bavay & Dautzenberg, 1909 )

Páll-Gergely, Barna, Nguyen, Phi Khanh & Chen, Yansen, 2019, A review of Vietnamese Schistoloma Kobelt, 1902 with a list of all known species of the genus (Caenogastropoda: Cyclophoroidea: Pupinidae), Raffles Bulletin of Zoology 67, pp. 322-327 : 323

Schistoloma inermis ( Bavay & Dautzenberg, 1909)

( Fig. 1 C–F)

Coptochilus inermis Bavay & Dautzenberg, 1909: 287 , plate 11, figs. 8–9 (type locality: “Tan-Doc, aux confins du Delta et de le région montagneuse”).

Pinteria croesus Varga, 1972: 134 , figs. 6–11. new synonym.

Schistoloma croesus — Egorov, 2013: 14, fig. 22g.

Types examined. Tan-Doc, leg. Messager, MNHN- IM-2000-28067 (syntype of Coptochilus inermis , Fig. 1C ); Vietnam, Tam Davao (? [label hardly readable]), SMF 192262/1 (labelled as syntype of Coptochilus inermis , Fig. 1D ); Vietnam, Annam, Tam Dao, subtropischer Wald, 900 m, leg. T. Pócs, 08.10.1963, HNHM 11895 (holotype of Pinteria croesus , Fig. 1E ), HNHM 011896 (4 paratypes).

Additional material examined. China, Yunnan, Honghe Hanizu Yizu Zizhizhou, Pingbian Miaozu Zizhixian, Pingbian Daweishan Yuanshi Senlin Gongyuan , 2085 m a.s.l. 22°54.835′N 103°41.958′E, leg. A. Hunyadi, 27.03.2011, coll. HA/2 ( Fig. 1F ) .

Diagnosis. A middle-sized Schistoloma species with a smooth, conical-ovoid shell, without any signs of a periumbilical keel.

Distribution. Schistoloma inermis is known from Northern Vietnam (Vinh Puc Province), and the Chinese Yunnan Province. The type locality (Tan-Doc) could not be located on the map.

Remarks. There are no notable differences between Pinteria croesus and S. inermis . Therefore, it is considered as junior synonym of that species.

Figures

Fig. 1. Shells of Schistoloma Kobelt, 1902. A, Schistoloma cochinchinense (Rochebrune, 1882), HNHM 103478 from Ðồng Nai Province, Vietnam; B, Schistoloma messageri (Bavay & Dautzenberg, 1909), labelled as syntype SMF 192263; C–F, Schistoloma inermis (Bavay & Dautzenberg, 1909). C, syntype MNHN-IM-2000-28067; D, syntype SMF 192262; E, holotype of Pinteria croesus Varga, 1972, HNHM 11895; F, specimen in coll. HA from Yunnan, China. Photographs by: M.C. Gutierrez (C, downloaded from the website of the MNHN) and B. Páll-Gergely (A, B, D–F). Scale bar = 10 mm.