Redescription of the Pseudamnicola lindbergi (Boettger 1957) (Gastropoda: Hydrobiidae)

Bu calismada, Elbistan, Pinarbasi su kaynaginda yasayan Pseudamnicola lindbergi Boettger 1957’nin topotip orneklerinin konkolojik ve anatomik karakterleri calisilmistir. Daha once sadece kabuk morfolojisi gosterilen turun erkek bireylerinin ayrintili anatomisi ilk defa incelenmistir. Bulgular Boettger’in orjinal tanimlamasiyla ve Turkiye’nin diger Pseudamnicola turleriyle karsilastirilmistir.


Introduction
The genus Pseudamnicola is distributed in the West-Mediterranean, North-Africa, East-Mediterranean in Bulgaria, Greece, Turkey and Middle East (Glöer et al. 2010).In Turkey, thirteen species, two subspecies and one fossil species of Pseudamnicola have been reported so far.(Geldiay and Bilgin 1969;Paydak 1976;Bilgin 1980;Yıldırım 1999;Glöer and Georgiev 2012;Glöer et al. 2014;Glöer et al. 2015) Paydak (1976: 31-35) but the existence of this Iranian species in Turkey is not certain.Pseudamnicola macrostoma Küster 1852 was recorded from İzmir (Geldiay and Bilgin 1969;Bilgin 1980) and its drawings in the article seems to belong to member of the family Bithyniidae.I think these three species needs to be dissected again.
Pseudamnicola lindbergi was described by C. Boettger in 1957.Only shell morphology was included in the study and there is no information about the detailed anatomy of the species until today.This study is aimed to determine male anatomical characters of the Pseudamnicola lindbergi Boettger 1957 for the first time.

Materials and Methods
Samples were collected from Elbistan, Pınarbaşı spring originating from the Ceyhan river in 2015 (Figure 1).They were living on stones and aquatic plants.They preserved in plastic tubes including 80% ethanol.Dissections and measurements of the shells and genital organs were carried out using a stereo microscope (Olympus SZX7) and photographs were taken with a digital camera system (Olympus DP26).The topotypes are deposited in private collection of the author.Comparisons were made according to Boettger (1957).The yellowish shell conical with 4-4.5 whorls which are nearly straight with a weak suture.The umbilicus slit-like.Aparture ovoid, angled at the top and clear whitish peristome at the columella.Mantle and head dark colored, eye spots visible.The operculum dark yellow (Figure 2).

Male genital morphology:
The whitish penis long, triangular and warped to the distal part.
Habitat: Natural spring water.The specimens were collected from stones and aquatic plants.
As a characteristic feature of the genus, the penis is seen in a triangular structure and has a conical shell shape.Pseudamnicola lindbergi is similar to other Pseudamnicola species living in Turkey as shell morphology especially Pseudamnicola merali and Pseudamnicola kayseriensis.But P. lindbergi has a different penis shape.Its penis is also triangular but warped to the distal part

Discussion
In the description of Boettger (1957), it is said that the apex is undergoing corrosion thats why the shell with 3 sutures (Figure 2, Figure 3).Corrosion was also found in the apexes of the topotypes, but not so much as in Boettger's type species.This explains why the topotypes sutures are 4-4.5 whorls.Götting (1963), recorded the P. lindbergi from Bursa Uludağ but Schütt and Bilgin (1970) reported that this species belongs to the genus Bythinella on the basis that the study of Schütt 1965.The reason of all this confusion can be that the photograph of the holotype which has corroded apex.Because the shell is similar to genus Bythinella in this photo.Boettger (1957: 68,70)

Figure 1 .
Figure 1.Study area (a) Locality of the Pseudamnicola lindbergi (b-c) Photos of the Elbistan Pınarbaşı spring