Pseudopomatias sophiae Páll-Gergely, 2015

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 : 41

Pseudopomatias sophiae Páll-Gergely , n. sp.

Figs 6 B, 9F.

Diagnosis. A small, slender turriform species with strong ribs and rounded aperture.

Description. Shell light brown to yellowish, slender turriform, apex slightly blunt, the apical part of the shell (3–4th whorls) seems to be concave; shell widest at its base; the 7–7.25 very much bulging whorls are separated by deep suture; boundary of the protoconch and teleoconch is not visible, only the first quarter of whorl is not ornamented by ribs, the rest is with sharp, regular ribs; teleoconch also finely, regularly ribbed without spiral lines; ribs very sharp, regular even behind the aperture; aperture almost exactly round with an inconspicuous parietalpalatal transition; columellar-parietal transition not angled; apertural rim thickened and reflexed; the boundary between the two circles of the apertural rim is hardly visible.

Measurements (in mm). H: 5.9–7.0, D: 2.7–3.0 (n=3).

Differential diagnosis. P. s o ph i ae n. sp. is very similar to P. himalayae in terms of rib density and morphology, aperture formation and the building of the aperture lip. It is however smaller, more slender, has deeper suture, a more rounded aperture and regular ribs on the neck region. P. amoenus is much larger, has blunter ribs and a comparatively larger aperture of "deformed" shape. See also under P. abletti n. sp., P. linanprietoae n. sp. and P. nitens n. sp. and Table 5 .

Material. Tonkin, Trinh-Thuong, NHMUK 1910.1.21.2 (holotype), NHMUK 1910.1.21.3 (1 paratype); no locality, B. R. Lucas Coll, NHMUK 20130405/1 paratype; Muong Hum, Preston 81 (?)/1.8/1/09, J. J. MacAndrew coll, NHMUK 20130406/1 paratype; Tonkin, Lao Kay, E. R. Sykes coll, Acc. no. 1825, NHMUK 20130407/3 paratypes; Tonkin, Preston (?)/1.8/1/09, J. J. MacAndrew coll, NHMUK 20130408/1 paratype; Tonkin, Col de Nuages, coll. Staadt 1969, MNHN 2012-26933/3 paratypes; Tonkin, coll. Denis 1945, MNHN 2012-26934/3 paratypes; Tonkin, coll. Denis 1945, MNHN 2012-26935/5 paratypes (mixed sample with P. ni t e n s n. sp.: MNHN 2012-26936 and P. amoenus : MNHN 2012-27018); Tonkin, coll. Denis 1945, MNHN 2012-26937/3 paratypes; Tonkin, pris du Col de Nuages (2000 m altitude), leg. Messager, MNHN 2012-26952/37 paratypes (mixed sample with P. n i t e ns n. sp.: MNHN 2012-26953); Tonkin, leg. Messager, MNHN 2012-26959/6 paratypes (mixed sample with P. n i t e ns n. sp.: MNHN 2012-26960); Indochine, leg. Messager, MNHN 2012-26963/1 paratype; Indochine, leg. Messager, MNHN 2012-26965/4 paratypes; Indochine, leg. Messager, MNHN 2012-26966/2 paratypes and 1 juvenile shell (not paratype) (mixed sample with P. amoenus : MNHN 2012-26967); Indochine, leg. Messager, MNHN 2012-26970/1 corroded shell (not paratype) (mixed sample with P. amoenus : MNHN 2012-26968 and P. nitens n. sp.: MNHN 2012-26969); Indochine, leg. Messager, MNHN 2012-26971/2 paratypes (mixed sample with P. nitens n. sp.: MNHN 2012-26972); Indochine, leg. Messager, MNHN 2012-26973/3 (2 paratypes and one broken specimen which is not paratype; mixed sample with P. nitens n. sp.: MNHN 2012-26974); Indochine, leg. Messager, MNHN 2012-26975/2 paratypes and a juvenile shell, which is not paratype; Indochine, leg. Messager, MNHN 2012-26976/4 paratypes; Indochine, leg. Messager, MNHN 2012-26977/7 paratypes (mixed sample with P. n i t e ns n. sp.: MNHN 2012-26978); Indochine, leg. Messager, MNHN 2012-26980/2 shells, the juvenile is not paratypes (mixed sample with P. nitens n. sp.: MNHN 2012-26979); Indochine, leg. Messager, MNHN 2012- 26981/14 paratypes (mixed sample with P. n i t e ns n. sp.: MNHN 2012-26982); Tonkin, leg. Messager, MNHN 2012-26988/1 paratype (mixed sample with P. nitens n. sp.: MNHN 2012-26987); Tonkin, Pakhé, leg. Messager, MNHN 2012-27010/2 paratypes (mixed sample with P. amoenus : MNHN 2012-27009 and P. n i t e ns n. sp.: MNHN 2012-27011); Tonkin, Pac-Kha, NHMUK 1909.7.2.34/1 paratype (labelled as "co-type"); Tonkin, Muong-Hum, NHMUK 1909.7.2.29/1 paratype (labelled as "co-type").

Type locality. Tonkin, Trinh-Thuong.

Etymology. This new species is named after Zsófia (Sophia) Kémenes, the mother of the first author.

Distribution ( Fig. 15 ): The new species was collected in Northern Vietnam (Muong Hum, Lao Kay, Trinh Thuong), near the Chinese boarder by Colonel Messager.

Remarks. In museum collections Pseudopomatias sophiae n. sp. was frequently in mixed lots with P. amoenus and P. nitens n. sp.

Figures

FIGURE 6. Apertural margin of Pseudopomatias species. A. Pseudopomatias nitens n. sp., Tonkin, coll. Denis 1945, MNHN 2012 - 26931, paratype; B. P. sophiae n. sp., Tonkin, pris du Col de Nuages (2000 m altitude), leg. Messager, MNHN 2012 - 26952, paratype; C. P. amoenus Möllendorff 1885, same data as before; D. P. linanprietoae n. sp., Laos, Luang Prabang Prov., Nong Kiau, excoll Jose Ahuir Galindo, paratype, coll. PGB; E. P. nitens n. sp. from Sichuan, same data as before; F. P. maasseni n. sp., holotype.

FIGURE 15. Distribution of Pseudopomatias and Vargapupa n. gen. species. Empty triangle, top up: Vargapupa biheli n. sp.; filled triangle, top down: Vargapupa oharai n. sp.; empty square: Pseudopomatias maasseni n. sp., open circle: P. sophiae n. sp., closed circle: P. linanprietoae n. sp.