Bithynia mazandaranensis
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Ordo: Sorbeoconcha
Familia: Bithyniidae
Genus: Bithynia
Name
Bithynia mazandaranensis Glöer & Pešić, 2012 sp. n. – Wikispecies link – Pensoft Profile
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), (ii) the whorls are more convex (Fig. 7a–b), and (iii) the surface has longitudinal and transverse striae (Fig. 7d).
Associated species
Planorbis carinatus, Anisus sp., Valvata cristata, Valvata nowshahrensis sp. n., Hippeutis complanatus.
Remarks
Probably this species formerly (e.g., Mansoorian 2000[1]) 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.
Original Description
- Glöer, P; Pešić, V; 2012: The freshwater snails (Gastropoda) of Iran, with descriptions of two new genera and eight new species ZooKeys, 219: 11-61. doi
Other References
- ↑ Mansoorian A (2000) Some freshwater snails from Northern Iran. Iranian Journal Public Health 29(1–4): 77-82.
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