Theodoxus fluviatilis (Linnaeus, 1758)

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 : 14

Theodoxus fluviatilis (Linnaeus, 1758) Figs 3c 11a

Theodoxus doriae Issel, 1865 (synonymy)

Records from Iran.

(all mentioned as Theodoxus doriae Issel): Kerman ( Issel 1863, Martens 1874, Biggs 1937); Gilan, Mazandaran and Lorestan Province ( Mansoorian 2000).

New records.

Fars Province: IR13-07 [3 ex.]; IR14-07 [2 ex.]; Khorrasan Province: IR76-05 [1 ex]; IR 64-05 [1 ex.]; IR78a-05 [2 ex.]; IR79-05 [1 ex.]; Hormozgan Province: IR 17-11 [5 ex.]

Associated species.

Melanopsis sp., Radix sp., Planorbis intermixtus , Farsithyra farsensis , Physella acuta .

Remarks.

Martens (1879) synonymised Theodoxus doriae , the species reported by Issel (1863) from S Iran, with Theodoxus fluviatilis . Later on, Mansoorian (2000) described the operculum of Theodoxus doriae , which has only a rib, no peg. However, the shell illustrated by Mansoorian (1994) agrees well with Theodoxus fluviatilis . Thus we follow Martens’ (1879) synonymisation of Theodoxus doriae with Theodoxus fluviatilis . Our samples revealed onlythe presence of Theodoxus fluviatilis .

Distribution.

W- to Central-Palaearctic. Theodoxus fluviatilis has been considered by many authors to be an exclusively European species (see e.g. Zhadin 1952, Glöer 2002). But Bourguignat (1864), Brown (1994) and Van Damme (1984) mentioned it from NW Africa (Morocco, Algeria). Records of this species in Turkey ( Yıldırım 1994), and in Iran, confirm its wide distribution. However, it does not occur in Siberia (Vinarski, pers. comm.).

Figures

Figure 3. a-c Theodoxus pallida (from Edlauer's collection, NHMW 75000 / E / 50824) a Shell with corroded apex b label of Edlauer's collection c apophysis of Theodoxus pallida d apophysis of Theodoxus fuiviatilis (from IR 79).

Figure 11. Sarkhia sarabensis nov. sp. a shell b, c penis in situ.