A redescription of Theodoxus schultzii (Grimm, 1877), an endemic neritid gastropod of the Caspian Sea

Submitted by admin on Sun, 20/11/2011 18:55
MICHAEL L. ZETTLER
(2007)
Volume
39
Part
3
Page from
245

Theodoxus schultzii (Grimm, 1877), one of the rarest gastropod species of the Caspian Sea, is redescribed from recently sampled material. Morphological features are described, with photographs of the shell, operculum and radula. The shell of this species is characterised by its mostly citreous colour and elongation of the apertural edges. In its typical form, it is very similar to other species of the genus. The features of the radula and operculum are very similar to those of T. pallasi Lindholm, 1924 from the Caspian Sea and T. astrachanicus Starobogatov, 1994 from the Volga delta.

Keywords
Theodoxus schultzii
brackish water
radula
operculum
morphology
redescription
Caspian Sea