Landouria abdidalem, 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 : 39-41

Landouria abdidalem sp. nov.

urn:lsid:zoobank.org:act:B91C66B0-56B9-40EB-800E-4C321959C0B2

Figs 21 , 35 , 53 , 56 ; Tables 3–4

Diagnosis

Landouria abdidalem sp. nov. is characterized by a sharply keeled shell, a long and narrow penis and epiphallus, and a crenated flagellum, which is shorter than the epiphallus and abruptly tapering at its proximal end.

Etymology

The name of the species is derived from the Javanese expression ʻAbdi Dalemʼ (used as a noun in apposition). Abdi Dalem is a person who devotes himself to serve the Keraton of Yogyakarta (Yogya Palace) and the Sultan.

Material examined

Holotype

INDONESIA • holotype (det. anat.); Yogyakarta, Kulonprogo, Jatimulyo, near Kiskendo Cave ; 7°44′53″ S, 110°07′53″ E; 700 m a.s.l.; 25 Aug. 2017; B. Hausdorf leg.; D = 13.4 mm, H = 6.8 mm; MZB 21271 .

Paratypes

INDONESIA – Central Java • 1 spec. (det. anat.); Purworejo, Donorejo, near Seplawan Cave , shrubs and limestone rock; 7°45′52″ S, 110°05′46″ E; 700 m a.s.l.; MZB 17733 • 3 spec.; same data as for preceding; MZB 17732 • 5 spec.; same data as for preceding; MZB 19314 • 4 spec.; same data as for preceding; ZMH 133410 • 1 spec.; same data as for preceding; ZMH 133421 • 10 spec.; Yogyakarta, Kulonprogo, Jatimulyo, near Kiskendo Cave ; 7°44′53″ S, 110°07′53″ E; 700 m a.s.l.; ZMH 140026 • 1 spec. (det. anat.); Yogyakarta, Kulonprogo, Sabrang Kidul , snakefruit plantation; 7°44′38″ S, 110°07′55″ E; 730 m a.s.l.; MZB 17664 • 7 spec.; same data as for preceding; MZB 19253 .

Description

SHELL ( Fig. 56; Tables 3–4 ). Depressed conical, with 5.75–6 hardly convex whorls; protoconch almost smooth; teleoconch with fine, irregular wrinkles; apical side with indistinct incised spiral lines, umbilical side with more distinct spiral lines; scaly processes sparse, mainly at periphery and at umbilical side; tuberculate around umbilicus; brownish-corneous; body whorl sharply keeled; aperture rounded rhombic; upper insertion of peristome descending; peristome expanded, reflexed and thickened; umbilicus hardly eccentric, wide, comprising 33–48% of shell diameter, hardly obscured by columellar edge.

GENITALIA ( Figs 21 , 35 ; Table 4 ). Atrium short; penis long, becoming slightly broader proximally, without penis coecum; membranaceous sheath around distal part of penis connected with the epiphallus by tissue; penial retractor runs from diaphragm to proximal part of cylindrical epiphallus; flagellum shorter than epiphallus, broadest in its middle part, without node, abruptly tapering towards its blunt proximal end, crenated; vas deferens narrow and long; vagina long; oviduct shorter, broad, proximally tapering; peduncle of bursa copulatrix subdivided into a broader, spindle-shaped 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

With regard to the shell, L. abdidalem sp. nov. resembles L. tholiformis sp. nov. ( Fig. 51 ), with which it clusters in the molecular phylogeny ( Fig. 1 ). For differences, see remarks under that species. The range of L. abdidalem sp. nov. overlaps with that of L. zonifera sp. nov. For differences, see remarks under that species. Furthermore, the range of L. abdidalem sp. nov. overlaps with that of L. menorehensis sp. nov. ( Fig. 88 ) from which it can easily be distinguished by the sharply keeled, depressed conical, brownishcorneous shell.

Distribution

Landouria abdidalem sp. nov. is endemic to the Menoreh Hills ( Fig. 53 ).

Figures

Figs 15–24. Genitalia of species of Landouria from Java. 15. L. winteriana (Pfeiffer, 1842), West Java, Padalarang, Gunung Masigit (neotype, ZMA 376193a). 16. L. rotatoria (Pfeiffer, 1842), West Java, Gunung Salak, 1166 m a.s.l. (neotype, MZB 19205). 17. L. epiplatia (Möllendorff, 1897)?, West Java, Bogor, Gunung Gede (ZMH 79946). 18. L. nusakambangensis sp. nov., Central Java, Nusa Kambangan Island, nature monument Gligir (holotype, ZMA 412298a). 19. L. petrukensis sp. nov., Central Java, Karangbolong, way to Petruk Cave (holotype, MZB 19203). 20. L. tholiformis sp. nov., Yogyakarta, Gunung Kidul, Tepus, near Poktunggal Beach (holotype, MZB 17999). 21. L. abdidalem sp. nov., Yogyakarta, Kulonprogo, Sabrang Kidul (holotype, MZB 17664). 22. L. madurensis sp. nov., East Java, Madura Island, Sampang, Nepa Monkey lowland rainforest (paratype, MZB 19209). 23. L. sewuensis sp. nov., Yogyakarta, Gunung Kidul, Tepus, Mbajo Hill (holotype, MZB 19255). 24. L. sukoliloensis sp. nov., Central Java, Kayen, near Watu Payung (holotype, MZB 19219). Scale bars: 1 mm.

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 56–59 (opposite page). Shells of species of Landouria from Java. 56. L. abdidalem sp. nov., Yogyakarta, Kulonprogo, Sabrang Kidul (holotype, MZB 17664). 57. L. madurensis sp. nov., East Java, Madura Island, Sampang, Nepa Monkey lowland rainforest (holotype MZB 21432). 58. L. sewuensis sp. nov., Yogyakarta, Gunung Kidul, Tepus, Mbajo Hill (holotype, MZB 19255). 59. L. sukoliloensis sp. nov., Central Java, Kayen, near Watu Payung (holotype, MZB 19219). Scale bar: 5 mm.

Figs 48–51 (opposite page). Shells of species of Landouria from Java. 48. L. parahyangensis sp. nov., West Java, Karangnunggal, surroundings of Pasir Taraje Cave (holotype, MZB 20429). 49. L. nusakambangensis sp. nov., Central Java, Nusa Kambangan Island, nature monument Gligir (holotype, ZMA 412298a). 50. L. petrukensis sp. nov., Central Java, Karangbolong, way to Petruk Cave (holotype, MZB 19203). 51. L. tholiformis sp. nov., Yogyakarta, Gunung Kidul, Tepus, near Poktunggal Beach (holotype, MZB 17999). Scale bar: 5 mm.

Fig. 1. Bayesian 50% majority rule consensus tree based on mitochondrial 16S rDNA sequences of species of Landouria Godwin-Austen, 1918 with Mandarina suenoae Minato, 1978 and Euhadra peliomphala (Pfeiffer, 1850) as outgroups. All species of Landouria in this tree are from Java except L. omphalostoma Páll-Gergely & Hunyadi, 2013 from China and L. timorensis Köhler et al. in press, L. montana Köhler et al. in press and Landouria sp. nov. (= L. winteriana (non Pfeiffer, 1842) in Köhler et al. (in press)) from Timor. Values at the nodes represent Bayesian posterior probabilities (left) and maximum likelihood bootstrap values (right). Numbers after taxon names correspond to MZB and ZMH catalogue numbers, AM catalogue numbers or GenBank accession numbers (see Table 1).

Figs 85–88. Shells of species of Landouria from Java. 85. L. pakidulan sp. nov., Central Java, Nusa Kambangan Island, nature monument Gligir (holotype, ZMA 417011a). 86. L. dharmai sp. nov., East Java, Tulungagung, Popoh (holotype, MZB 21272). 87. L. davini Dharma, 2015, Central Java, Baturraden, Pancuran Tujuh, Gunung Slamet (holotype, MZB 17063). 88. L. menorehensis sp. nov., Yogyakarta, Kulonprogo, Sibolong (holotype, MZB 19201). Scale bar: 5 mm.