Bithynia (Bithynia) mazandaranensis, Glöer & Pešić, 2012

Gloeer, Peter & Pesic, Vladimir, 2012, The freshwater snails (Gastropoda) of Iran, with descriptions of two new genera and eight new species, ZooKeys 219, pp. 11-61: 18

publication ID

http://dx.doi.org/10.3897/zookeys.219.3406

publication LSID

lsid:zoobank.org:pub:35A0EBEF-8157-40B5-BE49-9DBD7B273918

persistent identifier

http://treatment.plazi.org/id/22D0892E-8670-4131-9149-0F77C007BB94

taxon LSID

lsid:zoobank.org:act:22D0892E-8670-4131-9149-0F77C007BB94

treatment provided by

ZooKeys by Pensoft

scientific name

Bithynia (Bithynia) mazandaranensis
status

sp. n.

Bithynia (Bithynia) mazandaranensis   ZBK   sp. n. Figs 7a-d View Figure 7

Type locality.

Mazandaran Province, Nowshahr city, pond near Caspian Sea, 51°31'E, 36°38'N, 18 June 2005.

Holotype

(ZMH 79369):Shell height 8.0 mm, width 5.0 mm.

Etymology.

Named after the region where the species was collected.

Description.

The horn-coloured shell is conical with 5.5 whorls, which are slightly convex with a clear suture and an acute apex. The umbilicus is closed. The aperture is ovate, angled at the top. The margin of the aperture is, from lateral view, sinuated. The surface bears a lattice structure. Shell height 8.0 mm, width 5.0 mm, aperture height 3.6 mm.

Differentiating features.

The new species resembles Bithynia tentaculata   but differs from it by the following features: (i) the operculum is more angled ( Fig. 7c View Figure 7 ), (ii) the whorls are more convex ( Fig. 7a-b View Figure 7 ), and (iii) the surface has longitudinal and transverse striae ( Fig. 7d View Figure 7 ).

Associated species.

Planorbis carinatus   , Anisus   sp., Valvata cristata   , Valvata nowshahrensis   sp. n., Hippeutis complanatus   .

Remarks.

Probably this species formerly (e.g., Mansoorian 2000) was confused with Bithynia tentaculata   . Because we had only an empty shell of this species, we do not know if it belongs to the genus Bithynia   or Pseudobithynia   , so our generic assignment is tentative. To address this question, anatomical studies of more specimens are necessary.