Landouria nodifera, Nurinsiyah & Neiber & Hausdorf, 2019

Nurinsiyah, Ayu Savitri, Neiber, Marco T. & Hausdorf, Bernhard, 2019, Revision of the land snail genus Landouria Godwin-Austen, 1918 (Gastropoda, Camaenidae) from Java, European Journal of Taxonomy 526, pp. 1-73 : 47-48

Landouria nodifera sp. nov.

urn:lsid:zoobank.org:act:36465425-2C50-4721-9B73-3719E2D4A78A

Figs 40 , 54 , 61 , 64 ; Tables 3–4

Landouria rotatoria – Nurinsiyah 2015: 32 (in part). (not Pfeiffer, 1842)

Diagnosis

Landouria nodifera sp. nov. is characterized by a strongly depressed conical, brownish-corneous, sharply keeled shell and a penis that becomes broader towards is proximal end, the presence of a coecum at the proximal end of the penis and a node at the base of the flagellum.

Etymology

Landouria nodifera sp. nov. is named after the node at its flagellum (Latin: ʻnodusʼ = ʻnodeʼ, ʻferreʼ = ʻto carryʼ; used as an adjective).

Material examined

Holotype

INDONESIA • holotype (det. anat.); Central Java, Pati, Larangan Village, Lanang Spring ; 6°54′19″ S, 111°03′22″ E; 100 m a.s.l.; 15 Aug. 2014; A.S. Nurinsiyah, F.L.H. Irsyad, F.J. Sari and E. Nurlaela leg.; measurements: D = 15.0 mm, H = 7.0 mm; MZB 19227 .

Paratypes

INDONESIA – Central Java • 1 spec.; same data as for holotype; MZB 19233 • 6 spec.; same data as for holotype; MZB 19228 • 5 spec.; same data as for holotype; ZMH 133428 • 9 spec. (det. anat.); Pati, Larangan Village, Lowo Cave ; 6°54′19″ S, 111°03′24″ E; 112 m a.s.l.; MZB 19229 • 1 spec.; same data as for preceding; MZB 21266 .

Description

SHELL ( Fig. 61 ; Tables 3–4 ). Depressed conical, with 5–5.75 hardly convex whorls; protoconch almost smooth; teleoconch with irregular wrinkles; apical side with indistinct incised spiral lines, umbilical side with more distinct spiral lines; scaly processes sparse, mainly at periphery; tuberculate around umbilicus; brownish-corneous; body whorl sharply keeled; aperture rhombic; upper insertion of peristome slightly descending; peristome expanded, reflexed and slightly thickened; umbilicus slightly eccentric, wide, comprising 26–38% of shell diameter, hardly obscured by columellar edge.

GENITALIA ( Figs 40 , 64 ; Table 4 ). Atrium short; penis long, consisting of a cylindrical distal part covered by an additional sheath, connected by muscular tissue to proximal part of epiphallus, and a dilated proximal part containing a short penial papilla; inside proximal part of penis with longitudinal pilasters, which pass into a more complex sculpture in distal part of penis; at proximal end of penis with a blunt penis coecum; penial retractor runs from diaphragm to distal part of epiphallus, which tapers proximally; flagellum moderately long, broadest in its middle part, where it is equipped with a node, tapering towards its proximal end; vas deferens narrow and long; vagina long; peduncle of bursa copulatrix subdivided into a broader, cylindrical distal part and a narrower, longer proximal part, ending in an elongate oval bursa beside albumen gland. Right ommatophoral retractor runs between penis and vagina.

Remarks

Landouria nodifera sp. nov., L. tonywhitteni sp. nov., L. pacitanensis sp. nov., L. sukoliloensis sp. nov., L. sewuensis sp. nov. and L. intumescens share strongly depressed, brownish-corneous, sharply keeled shells. These species cannot be reliably distinguished by shell characters. Landouria nodifera sp. nov. shares having a coecum at the proximal end of the penis with L. pacitanensis sp. nov., from which it differs in the lack of the narrow constriction subdividing the penis of L. pacitanensis sp. nov. and the presence of a node at the base of the flagellum. Landouria nodifera sp. nov. shares having a node at the base of the flagellum with L. tonywhitteni sp. nov., from which it differs in the presence of the coecum at the proximal end of the penis and the proximally broader penis.

Distribution

Landouria nodifera sp. nov. is endemic to Sukolilo Karst (Fig. 54).

Figures

Figs 29–47. Flagella of species of Landouria from Java. 29. L. winteriana (Pfeiffer, 1842), West Java, Padalarang, Gunung Masigit (neotype, ZMA 376193a). 30. L. rotatoria (Pfeiffer, 1842), West Java, Gunung Salak, 1166 m a.s.l. (neotype, MZB 19205). 31. L. epiplatia (Möllendorff, 1897)?, West Java, Bogor, Gunung Gede (ZMH 79946). 32. L. nusakambangensis sp. nov., Central Java, Nusa Kambangan Island, nature monument Gligir (holotype, ZMA 412298a). 33. L. petrukensis sp. nov., Central Java, Karangbolong, way to Petruk Cave (holotype, MZB 19203). 34. L. tholiformis sp. nov., Yogyakarta, Gunung Kidul, Tepus, near Poktunggal Beach (holotype, MZB 17999). 35. L. abdidalem sp. nov., Yogyakarta, Kulonprogo, Sabrang Kidul (holotype, MZB 17664). 36. L. madurensis sp. nov., East Java, Madura Island, Sampang, Nepa Monkey lowland rainforest (paratype, MZB 19209). 37. L. sewuensis sp. nov., Yogyakarta, Gunung Kidul, Tepus, Mbajo Hill (holotype, MZB 19255). 38. L. sukoliloensis sp. nov., Central Java, Kayen, near Watu Payung (holotype, MZB 19219). 39. L. tonywhitteni sp. nov., Central Java, Taruman Village, near Sendang Sedayu (holotype, MZB 19214). 40. L. nodifera sp. nov., Central Java, Larangan Village, Lanang Spring (holotype, MZB 19227). 41. L. pacitanensis sp. nov., East Java, Pacitan, near Srau Beach (MZB 19231). 42. L. intumescens (Martens, 1867), East Java, Guwoterus (MZB 19207). 43. L. smimensis (Mousson, 1848), East Java, Tosari (ZMA 390881). 44. L. zonifera sp. nov., Yogyakarta, Kulonprogo, Sibolong (holotype, MZB 17727). 45. L. ciliocincta (Möllendorff, 1897), East Java, Malang, Kondangmerak (MZB 19211). 46. L. pakidulan sp. nov., Central Java, Nusa Kambangan Island, nature monument Gligir (holotype, ZMA 417011a). 47. L. menorehensis sp. nov., Yogyakarta, Kulonprogo, Sibolong (holotype, MZB 19201). Scale bar: 1 mm.

Figs 52–55 (opposite page). Distribution of species of Landouria in Java (10′ grid). 52. L. winteriana (Pfeiffer, 1842), L. naggsi sp. nov., L. nusakambangensis sp. nov., L. petrukensis sp. nov., L. tholiformis sp. nov., L. tonywhitteni sp. nov., L. smimensis (Mousson, 1848). 53. L. conoidea (Leschke, 1914), L. abdidalem sp. nov., L. sewuensis sp. nov., L. sukoliloensis sp. nov., L. pacitanensis sp. nov., L. intumescens (Martens, 1867), L. madurensis sp. nov. 54. L. rotatoria (Pfeiffer, 1842), L. nodifera sp. nov., L. parahyangensis sp. nov., L. schepmani (Möllendorff, 1897), L. zonifera sp. nov., L. ciliocincta (Möllendorff, 1897), L. pakidulan sp. nov. 55. L. epiplatia (Möllendorff, 1897), L. monticola van Benthem Jutting, 1950, L. davini Dharma, 2015, L. menorehensis sp. nov., L. dharmai sp. nov., L. moussoniana (Martens, 1867).

Figs 60–62. Shells of species of Landouria from Java. 60. L. tonywhitteni sp. nov., Central Java, Taruman Village, near Sendang Sedayu (holotype, MZB 19214). 61. L. nodifera sp. nov., Central Java, Larangan Village, Lanang Spring (holotype, MZB 19227). 62. L. pacitanensis sp. nov., East Java, Pacitan, Srau Beach (holotype, MZB 21191). Scale bar: 5 mm.

Figs 63–71. Genitalia of species of Landouria from Java. 63. L. tonywhitteni sp. nov., Central Java, Taruman Village, near Sendang Sedayu (holotype, MZB 19214). 64. L. nodifera sp. nov., Central Java, Larangan Village, Lanang Spring (holotype, MZB 19227). 65. L. pacitanensis sp. nov., East Java, Pacitan, near Srau Beach (MZB 19231). 66. L. intumescens (Martens, 1867), East Java, Guwoterus (MZB 19207). 67. L. smimensis (Mousson, 1848), East Java, Tosari (ZMA 390881). 68. L. zonifera sp. nov., Yogyakarta, Kulonprogo, Sibolong (holotype, MZB 17727). 69. L. ciliocincta (Möllendorff, 1897), East Java, Malang, Kondangmerak (MZB 19211). 70. L. pakidulan sp. nov., Central Java, Nusa Kambangan Island, nature monument Gligir (holotype, ZMA 417011a). 71. L. menorehensis sp. nov., Yogyakarta, Kulonprogo, Sibolong (holotype, MZB 19201). Scale bars: 1 mm.