Islamia skalaensis, Glöer & Reuselaars, 2020

Glöer, Peter & Reuselaars, Robert, 2020, The Islamia spp. from Greece (Gastropoda: Hydrobiidae) with the description of two new species, Ecologica Montenegrina 32, pp. 42-45 : 44

Islamia skalaensis n. sp. [ fig. 4.2 ]

https://zoobank.org/ urn:lsid:zoobank.org:act:DC74C663-2DD9-44CA-A0F7-C0C90308C243

Material examined: Holotype ( RMNH.MOL.347634) and 5 paratypes from type locality.

Holotype: 0.85 mm high, 1.05 mm broad from type locality.

Paratypes: 2 ex. ( RMNH.MOL.347635) , 3 ex. in coll. Robert Reuselaars (no. 743) from type locality.

Locus typicus: N ear the bridge over the Vasilopotamos river , west of Skala, Peleponnesos, Greece, 36°50'36.80320'' N 22° 38'48.62719'' E, 19.09.2010 Robert Reuselaars leg.

Habitat: The species was collected amongst waterplants.

Etymology: Named after the nearby town Skala.

Description: The tiny shell is valvatoid with 2.5-3.0 slightly convex whorls with a deep suture. The aperture is circular, the peristome is sharp. The umbilicus is open, partly covered by the body whorl. The spire is small. The ratio of shell height to shell width is 0.8. The shell is 0.85 mm high and 1.05 mm broad.

Differentiating characters: The shell of Islamia graeca is more globular having a ratio of shell height to shell width of 1.0, while the spire of I. trichoniana is less high than in I. skalaensis n. sp. In Islamia papavasileioui n. sp. the umbilicus is not covered by the body whorl.

Distribution: Greece; only known from type locality.

Conservation: Of the Islamia spp. described in this article, we consider the both species as endangered because they live in one spring only.

Figures

Figure 4. 1: Islamia papavasileioui n. sp., spring in Kryoneri, Greece. 2: Islamia skalaensis n. sp. Vasilopotamos river near bridge over the river, west of Skala, Peleponnesos, Greece.