Islamia steffeki, Glöer & Grego, 2015

Glöer, Peter & Grego, Jozef, 2015, New subterranean freshwater Molluscs from Bosnia & Hercegovina (Mollusca: Hydrobiidae), Ecologica Montenegrina 2 (4), pp. 307-314 : 313-314

Islamia steffeki n. sp.

( Figs 33-36)

Holotype: shell height 1.65 mm, width 1.7 mm, HNHM 99431 .

Paratypes: 3 juv, specimens in ethanol, 20 specimens + some broken shells HNHM 99432 and 8 pecimens coll Grego from Izvor plive 1A + 5 specimens from spring in Gornja Pećka HNHM 99434 + 11 specimens from Izvor Plive 1B , HNHM 99433 , 2 specimen in coll. Glöer.

Locus typicus: Republika Srpska, Draganić, Izvor Plive 1A, ca 150 m E of Izvor Plive 1, side spring in a house yard at right side of path to Izvor Plive 1, sandy sediment at the bottom of the spring zone; N44.240797°, E17.017108°; 05.04.2015 Jozef Grego leg. ( Fig. 4).

Etymology: The species is named after the ever helpful and untimely deceased prof. Jozef Šteffek, a dedicated malacologist of Banská Štiavnica, Slovakia.

Description

Shell. The whitish shell is conical with 5.5 fast growing convex whorls separated by a deep suture. The aperture is circular, the umbilicus as wide as the half of the penultimate whorl. Shell height 1.6–1.7 mm, width 1.7–1.9 mm.

Operculum light orange, concave without a peg.

Differentiating features: The spire is higher and the whorls are more convex than all Islamia spp. mentioned by Radoman (1983) and Bodon et al. (2001).

Distribution: Known from type locality and sampling site 3 at Gornja Pećka and Izvor Plive 1A and 1B.