Travunijana angelovi (Schütt, 1972) comb. nov.

Figs 13E, 14B

Plagigeyeria nitida angelovi Schütt, 1972: 116, 119, tab. 6, fig. 9.

Plagigeyeria angelovi – Bole & Velkovrh 1986: 202 – Bodon, Manganelli & Giusti 1996: 33, fig. 13. Plagigeyeria nitida angelovi – Bank 2013: Fauna Europaea v. 2.6 – Bank & Neubert 2017: 25.

Diagnosis

Hard shell (3.3 mm) with conical spire and broader body whorl and with distinct broad and blunt umbilical keel at lower part of the body whorl. Aperture irregularly broad lens shaped and more protruding at the basal view. Lateral labral profile straight and columellar labrum possesses a weak sinuation. Protoconch surface regularly pitted.

Distribution

Empty shells are known from the Vrelo “Ombla” (2.5 m a.s.l.) in Komolac near Dubrovnik (Schütt 1972; Schütt 2000), supplied by groundwater mainly from Popovo Polje (269 m a.s.l.) and its hinterland.

Remarks

The second carinated species of the Western Trebišnjica aquifer, T. angelovi (Schütt, 1972) has an elongate shape with a smooth surface. Originally placed by Schütt (1972) as a subspecies of T. nitida (Schütt, 1963), it is known from springs in Hutovo (Svitavsko) Blato. However nothing common can be found on the shell morphology of both taxa except for the carinated bottom of the body whorl; so their treatment as independent species is preferred herein. Travunijana angelovi can be scarcely found in the accessible thanatocoenoses of the Vrelo “Ombla” near Komolac. Only a few usually worn shells within each sample suggest that its remote habitat is most likely situated deep inside the mountain, far away from the spring outlet.