Hausdorfenia Grego & Mumladze, 2020

Grego, Jozef, Mumladze, Levan, Falniowski, Andrzej, Osikowski, Artur, Rysiewska, Aleksandra, Palatov, Dimitry M. & Hofman, Sebastian, 2020, Revealing the stygobiotic and crenobiotic molluscan biodiversity hotspot in Caucasus: Part I. The phylogeny of stygobiotic Sadlerianinae Szarowska, 2006 (Mollusca, Gastropoda, Hydrobiidae) from Georgia with descriptions of five new genera and twenty-one new species, ZooKeys 955, pp. 1-77 : 1

Genus Hausdorfenia Grego & Mumladze gen. nov.

Type species.

Hausdorfenia pseudohauffenia Grego & Mumladze, sp. nov.

Species assigned to the genus.

Hausdorfenia shareula Grego & Mumladze, sp. nov.

Diagnosis.

The new genus differs from Pontohoratia Vinarski, Palatov & Glöer, 2014 by its flatter shell shape, more coarsely pitted protoconch and by its operculum with a distinct peg on its inner side. The molecular data support the closest relationship is to the genus Kartvelobia gen. nov.; however, its valviform shell shape is substantially different from the elongate oval shape and aperture morphology of its relative.

Etymology.

Name derived from Bernhard Hausdorf, Hamburg University (Germany), who contributed much to the study of Mollusca from whole Caucasus region.

Distribution.

Known from the karstic plateau of Shaori (შაორის კარსტული პლატო) and adjacent stygobiotic habitats (Fig. 15 ).

Figures

Figure 15. Distribution map of genera Pontohoratia Vinarski, Palatov & Gloeer, 2014; Motsametia Vinarski, Palatov & Gloeer, 2014 and Hausdorfenia gen. nov. 1 P. smyri Vinarski, Palatov & Gloeer, 2014 (black dot) 2 - 4 P. birsteini (Starobogatov, 1962) (grey dots) 6 M. borutzkii (Shadin, 1932) (purple dot) 10 H. shareula sp. nov. (dark red dot) 12 - 15 H. hauffeniaformis sp. nov. (red dots) 27 P. pichkhaiai sp. nov. (light blue dot) 28 P. mapeli sp. nov. (medium blue dot) 30 - 31 P. vinarskii sp. nov. (dark blue dot).