Bythinella gregoi, Glöer & Erőss, 2015

Glöer, Peter & Erőss, Zoltán Péter, 2015, Two new Bythinella species from Romania (Gastropoda: Amnicolidae), Ecologica Montenegrina 4, pp. 14-18 : 16-18

Bythinella gregoi n. sp.

( Figs 6-9 , Fig. 1 )

Holotype: 2.7 mm height, 1.4 mm width, NHMH 99693 .

Paratypes: 15 sp. NHMH 99694 , 4 sp. coll. Glöer, 3 sp. coll. Grego.

Type locality: Romania, Salaj county, 3, 7 km SE of Vălişoara (Dióspatak), below the lowest pond, spring, right side of the brook. N47.356° E23.428°; 15.07.2015 Erőss et Kenéz leg.

Etymology: The species is dedicated to the junior author’s friend and colleague Jozef Grego, Malacologist of Horná Mičiná, Slovakia in honor to his engagement in Hydrobiidae studies.

Description: The horn-colored shell has 4.5 whorls which are slightly convex with a deep suture. The shell is elongated cylindrical-ovate. The aperture is ovate and slightly angled at the top. The peristome is sharp. The umbilicus is slit-like to closed. Aperture height to shell height: 0.4, shell height to shell width 1.6-1.9, height of body whorl to height of spire 1.9-2.1, shell height 2.2-2.6 mm, width 1.3-1.4 mm.

Male copulatory organ: unknown.

Differentiating features: The shells are smaller than the other species of this region. In addition the shells differ in the ratio of height of body whorl to spire.

Ecology: The spring has cold water, shaded by some close conifers. There are water pipes for water collection but the outlet brook is open.

Distribution: Only known from type locality.

Remark: We could only find empty shells of this species. Thus this species possibly lives in the underground of this spring.

Figures

Figure 1. Sampling sites of Bythinella spp. in Romania. 1: B. georgievi Glöer 2013, 2: B. blidariensis Glöer 2013, 3: B. sirbui Glöer 2013, 4: B. feheri Glöer 2013, 5: B. falniowskii Glöer 2013, 6: B. grossui Falniowski, Szarowska et Sirbu 2009, 7: B. viseuiana Falniowski, Szarowska et Sirbu 2009; 8: B. calimanica Falniowski, Szarowska et Sirbu 2009, 9: B. viseuiana Falniowski, Szarowska et Sirbu 2009, 10: B. szarowskae Glöer 2013, 11: B. gregoi n. sp. 12: B. radomani Falniowski, Szarowska et Sirbu 2009, 13: B. muranyii n. sp., 14: B. dacica Grossu 1946 (type locality).

Figures 6-9. Bythinella gregoi n. sp. 6: Holotype. 11-13: Paratypes.