Difference between revisions of "Theodoxus pallida"
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Ordo: Neritoida
Familia: Neritidae
Genus: Theodoxus
Name
Theodoxus pallida Dunker, 1861 – Wikispecies link – Pensoft Profile
Records from Iran
Isfahan and Fars Province (Starmühlner and Edlauer 1957[1]).
Material examined
NHMW 75000/E/50824, “Theodoxus pallidus Dunker” Persien, Brackiger Quellsee, 500 m, nördl. vom Niris-see, leg. Starmühlner 1949.
Remarks
Starmühlner and Edlauer (1957)[1] provide a detailed description of the anatomy of this species but did not consider the operculum, the most important diagnostic feature. On the other hand, as figured in Starmühlner and Edlauer (1957)[1], the receptaculum seminis and the bursa copulatrix differ in length (while being of equal length in Theodoxus fluviatilis).
The re-examination of the specimens of Theodoxus pallida (Dunker, 1862) from Edlauer’s collection in NHMW clearly shows that this species is distinct from Theodoxus fluviatilis due to the shape of shell and the operculum (Fig. 3). As already mentioned by Dunker (1862) the spire in Theodoxus pallida is higher than in Theodoxus fluviatilis,and furthermore the apophysis of the operculum is broader and not attenuated at its basis (Fig. 3c). In addition the callus at border of the operculum in Theodoxus pallida is much stronger (Fig. 3c arrow).
Distribution
Iran.
Taxon Treatment
- 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
- ↑ 1.0 1.1 1.2 Starmühlner F, Edlauer A (1957) Ergebnisse der Österreichischen Iran-Expedition 1949/50 (Mit Berücksichtigung der Ausbeute der Österreichischen Iran-Expedition 1956): Beiträge zur Kenntnis der Molluskenfauna des Iran. Sitzungsberichte der österreichischen Akademie der Wissenschaften, mathematisch-naturwissenschaftliche Klasse, Abteilung I, 166 (9/10): 435–494.
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