Csomapupa luyorensis ( Godwin-Austen, 1917 )

Páll-Gergely, Barna, Fehér, Zoltán, Hunyadi, András & Asami, Takahiro, 2015, Revision of the genus Pseudopomatias and its relatives (Gastropoda: Cyclophoroidea: Pupinidae), Zootaxa 3937 (1), pp. 1-49 : 17

Csomapupa luyorensis ( Godwin-Austen, 1917)

Fig. 8A

Pseudopomatias luyorensis Godwin-Austen, 1917: 578 –579, Fig. 5 b. Pseudopomatias luyorensis — Gude 1921: pp 159–160.

Diagnosis. A large, tumid species with "double" suture, weak, but well-visible low ribs and very much widened peristome consisting of two well-visible circles.

Description. Shell greyish-yellowish, rather spindle-shaped; 7.5 moderately bulging whorls are separated by rather shallow suture; above the suture there is a groove running parallel with it; this is present on the whole shell except for the last quarter of whorl; protoconch consist of about two whorls; the sculpture of the first 0.75–1 whorl is finely granulated, rather glossy, after that it becomes regularly ribbed; teleoconch is regularly, extremely finely ribbed with extremely fine spiral lines; the ribs are very low and are regular even behind the aperture; aperture rounded; none of the transitions (columellar-parietal and parietal-palatal) are angled; peristome very much widened and slightly reflexed, consists of two circles; the inner one is slimmer and protruding, the outer one is much wider and a bit expanded.

Measurements (in mm). H: 11.3, D: 4.8 (n=1).

Differential diagnosis. See under Cs. luyorensis .

Type material. Luyor, Abor Hills, NHMUK 1903.7.1.3377/2 syntypes (one adult and one juvenile shell).

Distribution. Cs. luyorensis is known from the type locality only (see also Fig. 2 and Table 3 ).

Figures

FIGURE 2. Different areas of north-eastern India mentioned in the text. See also Table 3. 1: Sikkim, 2: Aka Hills, 3: Garo Hills, 4: Khasi Hills, 5: Dafla Hills, 6: Abor Hills, 7: Naga Hills.

FIGURE 5. SEM images of the protoconch (A – B) and operculum (C, E – F: outer side, D: inner side) of Pseudopomatias sp. A. P. nitens n. sp., HNHM 98834; B. P. amoenus Möllendorff 1885, China, Yunnan, Yiliang Xian, Jiuxiang Fengjingqu, 1818 m, 25 ° 04.27306 ' N, 103 ° 22.87032 ' E, leg. Nakahara, Y., Ohara, K., Okubo, K. & Otani, J. U., 10.06. 2005., coll. PGB; C. P. amoenus, Indochine, leg. Messager, MNHN 2012 - 26983; D. P. amoenus, Tonkin, Muong-Hum, between Muong-Hum and the Clouds Pass (Col de Nuages), near the latter one, more than 2000 m a. s. l., leg. Messager, MNHN 2012 - 26997; E – F. P. e o s, Nantou Xian, Renai Xiang, Meifeng-Songgang road, around km 14, 2120 m asl., 24 ° 05.103 ' N 121 ° 10.257 ' E, leg. Hunyadi, 20.10. 2014.

FIGURE 8. A. Csomapupa luyorensis (Godwin-Austen, 1917), syntype, NHMUK 1903.7.1.3377; B. Cs. grandis (Godwin- Austen, 1876), syntype, NHMUK 1903.7.1.3438; C. Vargapupa oharai n. sp., holotype, HNHM 98837; D. Vargapupa biheli n. sp., holotype, MNHN 2012 – 27020; E. Nodopomatias oakesi (Godwin-Austen, 1917), syntype, NHMUK 1903.7.1.3086; F. Nodopomatias sibbumensis (Godwin-Austen, 1917), syntype, NHMUK 1903.7. 1.3146. Photos: A – B, E, F: H. Taylor; C – D: B. Páll-Gergely. Scale bars = 5 mm; the smaller one refers to the photos of the whole shell, the larger one refers to the photos showing the lateral and basal side of the shells.