Kaskakia khorrasanensis, 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 : 20

Kaskakia khorrasanensis sp. n. Figs 10a-d

Type locality.

Khorrasan Province, Kaskak stream in Kaskak village, 59°10'E, 35°25'N, ca. 1800 m asl., 11 June 2005.

Holotype

(ZMH 79372): Shell height 2.5 mm, width 1.9 mm.

Paratypes

(ZMH 79373): 21 ex. from type locality.

Etymology.

Named for its occurrence in Khorrasan Province.

Description.

The yellowish shell is conical to globular with 5.5 whorls, which are slightly convex and separated by a clear suture ( Fig. 10a ). The whorls increase rapidly with a prominent body whorl. The surface is glossy and finely striated. The apex is acute, the aperture is ovate and angled at the top, the umbilicus is closed. Shell height 2.3-2.5 mm, width 1.8-1.9 mm.

Animal.

The mantle and head are black. The penis is broad at the basis and tapered at the distal end ( Figs 10b-d ).

Differentiating features.

As for the genus.

Distribution.

Iran: Khorrasan Province; known only from type locality.

Figures

Figure 10. Kaskakia khorrasanensis sp. n. a shell b penis in situ c-d penis (c: dorsal view, d: ventral view).