Abstract
Karucia sublacustrina a new species of freshwater snails (Hydrobiidae, Gastropoda) is described based on material collected from Skadar Lake (Montenegro, Albania). The new species belongs to monotypic genus Karucia gen. n. The shell morphology and body shape of the new genus resembles Radomaniola Szarowska, 2006 and Grossuana Radoman, 1973, from which it differs in the larger shells with relatively slim and a slightly, but clearly shouldered body whorl. The number of gastropods from Skadar Lake basin tallies now 50 species. The adjusted rate of gastropod endemicity for Skadar Lake basin is estimated to be 38%. By compiling faunal and taxonomic data we also aim to provide information of relevance as to conservation efforts.
Highlights
The Skadar Lake system is a well-known hotspot of freshwater biodiversity (Pešić et al 2009) and harbors a highly diverse mollusc fauna (Glöer and Pešić 2008a)
The new genus appears to be close to Radomaniola Szarowska, 2006 and Grossuana Radomaniola elongata (Radoman), 1973, the hydrobioid genera bearing penis with a bilobed outgrowth on the left side and ovate-conical shell with more or less strongly developed last whorl (Radoman 1983)
Karucia gen. n. can be distinguished by the larger shells and the characteristic shape of the body whorl which is relatively slim and slightly but clearly shouldered
Summary
The Skadar Lake system is a well-known hotspot of freshwater biodiversity (Pešić et al 2009) and harbors a highly diverse mollusc fauna (Glöer and Pešić 2008a). Holotype (ZMH 79651): Shell height 3.6 mm, shell width 2.3 mm; MONTENEGRO, Skadar Lake, sublacustrine spring Karuč, 42°21'30.84"N, 19°06'23.03"E, 15.xi.2012 Pešić. Montenegro, Skadar Lake, sublacustrine spring Karuč (Fig. 7a).
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