Valvata nowshahrensis, 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 : 23-24

Valvata nowshahrensis sp. n. Fig. 14a-c

Type locality.

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

Holotype

(ZMH 79376): Shell diameter 3.3 mm, height 2.3 mm.

Paratypes

(ZMH 79377): 2 specimens from type locality; [2 ex.], Kermanshah Province: IR105-05.

Etymology.

Named after the region, where the species was collected.

Description.

The yellowish shell is translucent with 3 circular whorls. The umbilicus is wide, and the first whorl is visible through the umbilicus. The surface is glossy with very fine ribs. Shell diameter 3.2-3.3 mm, height 2.3 mm.

Differentiating features.

The new species can be distinguished from Valvata piscinalis by its larger umbilicus and from Valvata cristata by its higher spire.

Remarks.

This species has possibly been depicted by Mansoorian (1994) and confused with Valvata cristata .

Associated species.

Pseudobithynia mazandaranensis sp. n., Planorbis carinatus , Anisus sp., Valvata cristata , Hippeutis complanatus

Distribution.

Iran: Mazandaran and Kermanshah Provinces.

Figures

Figure 14. Valvata nowshahrensis sp. n. a shell b ventral view on the umbilicus c head with penis in situ.