Travunijana nitida ( Schütt, 1963 ) Grego, 2020

Grego, Jozef, 2020, Revision of the stygobiont gastropod genera Plagigeyeria Tomlin, 1930 and Travunijana Grego & Glöer, 2019 (Mollusca; Gastropoda; Moitessieriidae and Hydrobiidae) in Hercegovina and adjacent regions, European Journal of Taxonomy 691, pp. 1-56 : 39

Travunijana nitida ( Schütt, 1963) comb. nov.

Fig. 13F

Plagigeyeria nitida Schütt, 1963: 210–211 , fig. 8.

Plagigeyeria nitida – Schütt 1972: 116, 119, pl. 6 fig. 8. — Bole & Velkovrh 1986: 202 — Bodon, Manganelli & Giusti 1996: 33, fig. 13. — Bank 2013: Fauna Europaea v. 2.6 — Bank & Neubert 2017: 25.

Diagnosis

Elongate-oval hard-shelled species (3.6 mm) with smooth shiny shell surface and weak umbilical keel present close to the umbilicus. Elongate oval aperture obscuring the umbilicus and only slightly protruding at the basal view. Lateral labral profile is straight and columellar labrum possesses a weak fold.

Distribution

The empty shells are known only from springs at the southern end of Hutovo (Svitavsko) Blato (Vrelo “Sopot Mlin” and others at Sjekoše and Bajovci 2 m a.s.l.) (Schütt 1972). These springs receive their karst water from the main swallow holes of the River Trebišnjica at the end of Popovo Polje (227 m a.s.l.).

Remarks

The species is typical with its carinated umbilicus and elongated smooth shell surface. It is well separable from the sympatric T. edlaueri ( Schütt, 1961) , which has a larger, more conical shell with a more inflated aperture, but both still keeping the straight labral profile and weak sinulus at the columellar margin.

Figures

Fig. 13. Historical type specimens of species of Plagigeyeria from Hercegovina and adjacent regions, currently transferred to the genus Travunijana Grego & Glöer, 2019. A. Plagigeyeria robusta Schütt, 1959, Hercegovina, spring Čepelica near Bileća, holotype (SMF 162833). B. P. klemmi Schütt, 1961, Croatia, spring Stenjevac south of Vrgorac, holotype (SMF 164344). C. P. tribunicae Schütt, 1963, Hercegovina, spring Trebišnjica near Bileća, holotype (SMF 168968). D. P. edlaueri Schütt, 1961, Hercegovina, spring Sopot Mlin in Svitavsko Blato, holotype (SMF 164342). E. P. angelovi Schütt, 1972, Croatia, spring Ombla (Rijeka Dubrovačka) in Komolac, holotype (SMF 221242). F. P. nitida Schütt, 1963, Hercegovina, spring Sopot Mlin in Svitavsko Blato, holotype (SMF 168970).