Bithynia shapkarevi, Glöer & Shoreva & Slavevska-Stamenković, 2015

Glöer, Peter, Shoreva, Irina & Slavevska-Stamenković, Valentina, 2015, Bithynia shapkarevi n. sp., a new species from Prespa Lake, R. Macedonia (Gastropoda: Bithyniidae), Ecologica Montenegrina 2 (2), pp. 143-146 : 144-146

publication ID	urn:lsid:zoobank.org:pub:11F6CAF9-E07B-4B49-82D9-633A1559C9B2
publication LSID	urn:lsid:zoobank.org:pub:11F6CAF9-E07B-4B49-82D9-633A1559C9B2
persistent identifier	https://treatment.plazi.org/id/490122F2-91CD-4A39-8723-D74152D2A74D
taxon LSID	lsid:zoobank.org:act:490122F2-91CD-4A39-8723-D74152D2A74D
treatment provided by	Felipe
scientific name	Bithynia shapkarevi
status	sp. nov.

Treatment

Bithynia shapkarevi View in CoL n. sp.

( Figs. 2-6)

Holotype: shell height 4.8 mm, width 3.3 mm. 26.03.2010 I. Shoreva leg., ZMH 79896 View Materials .

Paratypes: 1 specimen, ZMH 79897 View Materials , 1 specimen coll. Slavevska-Stamenković, 1 specimen coll. Glöer, 2 specimens destroyed by dissection.

Locus typicus: R. Macedonia, Prespa Lake near village Asamati, 40°59' 23'' N, 21°02' 21'' E, 842 m alt GoogleMaps .

Etymology: Named in memory of Prof dr Jonče Šapkarev, in appreciation of his significant contribution for zoological science in R. Macedonia.

Description

Shell. The light yellowish to horn-coloured conical shell is glossy, the surface is finely striated. The 4.5 whorls are slightly convex with a clear visible but not deep suture ( Figs. 2-3), umbilicus closed, the aperture height takes 0.5 of the shell height. The females are as large as the males, thus a sexual dimorphism is not visible. The operculum is oval. Shell height 4.5-4.8 mm, width 3.2-3.3 mm. All shells have been covered with a thin layer of chalk.

Soft body. The mantle is light with reticular dark patterns. The head is grey with a whitish snout. Morphology of the penis. Penis and penial appendix are very short. The distal part of the penis is as long as the penial appendix (figs 5, 6), the flagellum is long ( Fig. 4).

Differentiating features: Penis, flagellum and operculum are similar to Bithynia prespensis , but the whorls are less convex as in B. prespensis , sutures less deep and no sexual dimorphism as found in B. prespensis . There is no Bithynia species known in the Balkan which has such a short distal part of the penis than the species from Prespa Lake.

Habitat and ecology: The new species was found from the shallower part of the lake (4 m depth), among sand and silt bottom sediment from the type locality.

Associated gastropods: Valvata (Cincinna) piscinalis O.F. Müller, 1774 , Pyrgohydrobia (Prespopyrgula) prespaensis (Urbanski, 1939) , Planorbarius corneus corneus (Linnaeus, 1758) .

Distribution: Republic of Macedonia, only known from the type locality ( Fig. 7), possibly a local endemic species.