Bythiospeum plivensis, Glöer & Grego, 2015

Glöer, Peter & Grego, Jozef, 2015, New subterranean freshwater Molluscs from Bosnia & Hercegovina (Mollusca: Hydrobiidae), Ecologica Montenegrina 2 (4), pp. 307-314 : 311-312

Bythiospeum plivensis n. sp.

( Figs 23-27)

Holotype: shell height 2.8 mm, width 1.5 mm, HNHM 99427 .

Paratypes: 17 specimens + some broken shells + 2 specimens in ethanole, HNHM 99428 , 2 specimen in coll. Glöer, 3 specimens in coll Grego.

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: Named after village Izvor Plive in which vicinity the locus typicus is located. Description

Shell. The whitish and silky shell is elongate-conic with 5.5 regular growing convex whorls with a deep suture, apex blunt. The umbilicus is closed, aperture nearly circular and large, slightly sinuated outer lip from lateral view. Shell height 2.7–2.8 mm, width 1.3–1.5 mm.

Differentiating features: Bythiospeum petroedei n. sp. differs from B. maroskoi n. sp. in size. From B. blihensis n. sp. it differs in the aperture, which is in B. plivensis n. sp. larger.

Distribution: Only known from type locality.

Associated species: Belgrandiella fontinalis (F.J. Schmidt, 1847) , Bythiospeum plivensis n. sp., Islamia steffeki n. sp.