Two new Bythinella species from Romania (Gastropoda: Amnicolidae) Author Glöer, Peter Biodiversity Research Laboratory, Schulstr. 3, D- 25491 Hetlingen, Germany, E-mail: gloeer @ malaco. de Author Erőss, Zoltán Péter Hungarian Natural History Museum, Baross utca 13. H- 1088 Budapest, Hungary, E-mail: erosspeter @ hotmail. com text Ecologica Montenegrina 2015 2015-11-11 4 14 18 journal article 54674 10.37828/em.2015.4.3 12cb9b2b-0538-4809-86b6-785a96498d8d 2336-9744 8032214 urn:lsid:zoobank.org:pub:A4C68EA4-5367-409C-8BA9-CFC5B79D7DA9 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. Figures 6-9. Bythinella gregoi n. sp. 6 : Holotype. 11-13 : Paratypes. 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. Figure 10. Sampling site of Bythinella muranyii n. sp. 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.