A new species of stygobitic snail in the genus Antrorbis Hershler & Thompson, 1990 (Gastropoda, Cochliopidae) from the Appalachian Valley and Ridge of eastern Tennessee, USA

Shell, opercula, and radula of Antrorbis tennesseensis sp. nov. A, B Holotype, ANSP 476793 C protoconch of Antrorbis cf. tennesseensis, ANSP 476793 D operculum, outer side, ANSP A477042 E operculum, inner side, ANSP 476793 F radula of ANSP 476793 G central teeth, ANSP 476793 H lateral teeth, ANSP 476793 I inner marginal teeth, ANSP 476793 J outer marginal teeth, ANSP 476793 Scale bars: 0.5 mm (A, B); 200 μm (C); 200 μm (D, E); 20 μm (F); 5 μm (G); 5 μm (H); 10 μm (I, J). Photograph credits: NFS.