A review of the microgastropod genus Systenostoma Bavay & Dautzenberg, 1908 and a new subterranean species from China (Gastropoda, Pulmonata, Hypselostomatidae) Author Jochum, Adrienne Author Slapnik, Rajko Author Kampschulte, Marian Author Martels, Gunhild Author Heneka, Markus Author Pall-Gergely, Barna text ZooKeys 2014 410 23 40 http://dx.doi.org/10.3897/zookeys.410.7488 journal article http://dx.doi.org/10.3897/zookeys.410.7488 1313-2970-410-23 E4C040C1939640F18C12D9518F59F668 Tonkinospira pauperrima (Bavay & Dautzenberg, 1908) Figure 2 Helix (Systenostoma) pauperrima Bavay & Dautzenberg, 1908: Journal de Conchyliologie, 56: 243-244. [ "Phu-Quoc-Oai" ]. Helix (Systenostoma) pauperrima - Bavay and Dautzenberg 1909 : Journal de Conchyliologie, 57: 195-196, Plate 8, Fig. 4-6. [ "Trouve a Phu-Quoc-Oai , parmi les detritus coquilliers"] Systenostoma pauperrima - Pilsbry 1917 : Manual of Conchology ... : 225-226, Plate 38, Figs 3-5. Systenostoma pauperrima - Schileyko Ruthenica 1998: Supplement 2(2): 165, Fig. 202. Material examined. Helix (Systenostoma) pauperrima (Bavay & Dautzenberg, 1908) (1 specimen). RBINS Dautzenberg Collection reg. nr. IG 10591 (tray 844), probably syntype. Remarks . The whole shell, including the protoconch is covered with regular, extremely fine spiral threads. The number of threads increases from the apex towards the aperture. The spiral lines are decussated with irregular radial lines, resulting in in a reticulated surface. Figure 2. SEM ( A-C ) and Nano-CT Volume Compositing 3D ( D-I ) and Nano-CT Summed Voxel Projection images ( J-L ) of Tonkinospira pauperrima (Bavay & Dautzenberg, 1908). RBINS Dautzenberg Collection reg. nr. IG 10591 (tray 844). Type locality material. Photos: SEM: Suzanne Leidenroth (SMNS). Nano-CT: Gunhild Martels.