Revision of the Diplommatinidae (Gastropoda: Cyclophoroidea) from Java Author Hausdorf, Bernhard text Zootaxa 2017 2017-08-29 4312 2 201 245 journal article 32279 10.11646/zootaxa.4312.2.1 d9c9335f-8c7b-4ac9-855f-079fce850cd5 1175-5326 892895 452Fee1D-Da7C-4553-B8Ce-21E4071E97D3 Diplommatina ristiae n. sp. ( Figs 12 , 30 ; Table 1 ) Diagnosis. Diplommatina ristiae n. sp. is characterized by its minute-sized, indistinctly ribbed shell, the lateral constriction of the last whorl and the ventrolaterally right position of the spiral palatal fold. Shell ( Fig. 30 ; Table 1 ). Dextral; spindle-shaped with conical early whorls and a narrowed last whorl; with 5.25–6 whorls separated by a deep suture; protoconch smooth; teleoconch with indistinct ribs (22–31 on the penultimate whorl; fewer on the last whorl) and a few very coarse ribs on the cervix; spiral striae between the ribs only locally visible; light corneous; subtranslucent; last whorl rounded, with a right lateral constriction; aperture subangular, angular at the transition from columellar to basal side; upper insertion of the peristome distinctly ascending towards aperture; insertions of the peristome connected by a partly detached callus; peristome distinctly expanded, thickened, doubled; aperture with a prominent columellar lamella, which remains high to ventrolaterally right inside the last whorl; with a long parietal lamella from lateral right to ventrolateral right inside the last whorl; with a spiral palatal fold ventrolaterally right inside the last whorl and with a short radial palatal fold laterally right; umbilicus closed. Shell height 1.63–2.0 mm, shell diameter 0.95–1.25 mm . Remarks. Diplommatina ristiae n. sp. is most similar to D. perpusilla . For a comparison see there. Type material. Holotype : Indonesia , Java , Central Java : Purworejo , Donorejo Village , near Seplawan Cave , 700 m a.s.l. , 7°45'52''S 110°5'46''E ( MZB 18884, leg. A.S. Nurinsiyah & T. Setiadi 9 January 2013 , D = 1.25 mm , H = 1.85 mm ). Paratypes : Indonesia , Java , West Java : Tasikmalaya , Setiawaras Village , near Sambawa Cave ( Ranggawulung Cave ), 361 m a.s.l. , 7°35'02"S 108°10'57"E ( MZB 18885/2; ZMH 133052 /1).— Central Java : Purworejo , Donorejo Village , near Seplawan Cave , 700 m a.s.l. , 7°45'52''S 110°5'46''E ( MZB 18886/4; ZMH 133053 /3). Habitat. On shrubs and limestone rocks in agroforest at 360–700 m a.s.l. Distribution ( Fig. 12 ). Diplommatina ristiae n. sp. is endemic to West and Central Java . Etymology. The species is named in honour of the Indonesian malacologist Ristiyanti Marwoto.