Revision of the land snail genus Landouria Godwin-Austen, 1918 (Gastropoda, Camaenidae) from Java Author Nurinsiyah, Ayu Savitri 5AFBFEFB-B243-49CC-AACC-248B2F007BC8 Museum Zoologicum Bogoriense, Research Center for Biology, Indonesian Institute of Science, Cibinong, West Java, Indonesia. ayu_nurinsiyah@yahoo.com & ayus002@lipi.go.id Author Neiber, Marco T. 8F6006F5-D880-4841-AC32-B97E18D7BB5C Zoological Museum, Center of Natural History, University of Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany mneiber@hotmail.de Author Hausdorf, Bernhard FEDE92C0-108D-4315-8F86-9F2CFF1CB906 Zoological Museum, Center of Natural History, University of Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany. hausdorf@zoologie.uni-hamburg.de text European Journal of Taxonomy 2019 2019-05-21 526 1 73 journal article 10.5852/ejt.2019.526 2da65c0a-9c48-43f5-ada3-e088de28dec1 2118-9773 3152217 3FFC527D-E9CA-4D9F-BF59-076FA60171AC Landouria naggsi sp. nov. urn:lsid:zoobank.org:act: 4EF9E468-DDEF-460D-939C-7D9C86254CF4 Figs 25 , 52 ; Tables 3–4 Diagnosis Landouria naggsi sp. nov. is characterized by an angular, tightly coiled, high conical shell with scales all over the teleoconch. Etymology Landouria naggsi sp. nov. is named in honour of the British malacologist Fred Naggs, who brought the authors of this study together. Material examined Holotype INDONESIA • holotype ; West Java , Cibitung , near Cikaso Waterfall , teak agroforestry ; 7°21′41″ S , 106°37′10″ E ; 47 m a.s.l. ; 5 Jul. 2015 ; A.S. Nurinsiyah and T. Setiadi leg.; D = 11.8 mm , H = 9.8 mm ; MZB 20424 . Paratypes INDONESIA – West Java • 1 spec. ; Cibitung , near Cikaso Waterfall , riparian (high shrubs) ; 7°21′40″ S , 106°37′05″ E ; 61 m a.s.l. ; MZB 20426 • 1 spec. ; same data as for preceding; ZMH 148184 • 3 spec. ; same data as for holotype; MZB 20425 • 2 spec. ; same data as for holotype; ZMH 148183 . Description SHELL (Fig. 25; Tables 3–4 ). Conical, with 6.25–7 slightly convex whorls; protoconch almost smooth; teleoconch with irregular wrinkles; incised spiral lines not discernible; scales all over teleoconch; tuberculate around umbilicus; brownish-corneous; body whorl angular; aperture oval; upper insertion of peristome slightly descending; peristome expanded, reflexed and slightly thickened; umbilicus hardly eccentric, wide, comprising 28–33% of shell diameter, hardly obscured by columellar edge. GENITALIA. Unknown. Remarks Landouria naggsi sp. nov. resembles L. parahyangensis sp. nov. (Fig. 48), from which it differs in the smaller (D 11.6–14.0 mm vs 14.7–16.9 mm in L. parahyangensis sp. nov. ), higher conical (D/H: 1.21– 1.37 vs 1.69–1.94 in L. parahyangensis sp. nov. ), less sharply keeled shell with a narrower umbilicus (U/D 0.28–0.33 vs 0.39–0.45 in L. parahyangensis sp. nov. ) and in having scales all over the teleoconch. With regard to the conical shell form L. naggsi sp. nov. resembles L. conoidea ( Leschke, 1914 ) ( Fig. 4 ). For differences, see remarks under that species. Distribution Landouria naggsi sp. nov. is known only from the surroundings of Cikaso Waterfall in Sukabumi Regency (Fig. 52).