Landouria nusakambangensis, 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 : 34-36

publication ID

https://doi.org/ 10.5852/ejt.2019.526

publication LSID

lsid:zoobank.org:pub:3FFC527D-E9CA-4D9F-BF59-076FA60171AC

DOI

https://doi.org/10.5281/zenodo.11238070

persistent identifier

https://treatment.plazi.org/id/3F1A3273-1ECA-4D55-B350-AC9FE593D6AD

taxon LSID

lsid:zoobank.org:act:3F1A3273-1ECA-4D55-B350-AC9FE593D6AD

treatment provided by

Plazi

scientific name

Landouria nusakambangensis
status

sp. nov.

Landouria nusakambangensis View in CoL sp. nov.

urn:lsid:zoobank.org:act:3F1A3273-1ECA-4D55-B350-AC9FE593D6AD

Figs 18 View Figs 15–24 , 32 View Figs 29–47 , 49 View Figs 48–51 , 52 View Figs 52–55 ; Tables 3–4 View Table 3 View Table 4

Landouria rotatoria – van Benthem Jutting 1941: 310 View in CoL (in part). (not Pfeiffer, 1842)

Diagnosis

Landouria nusakambangensis sp. nov. is characterized by a brownish-corneous, keeled shell, a penis with a small globular bulge at the proximal end and a flagellum consisting of a crenated distal part and a long tapering proximal part.

Etymology

Landouria nusakambangensis sp. nov. is named after its occurrence on Nusa Kambangan Island.

Material examined

Holotype

INDONESIA • holotype (det. anat.); Central Java, Nusa Kambangan Island, Nature Monument Gligir ; 7°44′ S, 108°53′ E; 15–16 Feb. 1927; P.F. Franck leg.; D = 14.9 mm, H = 9.1 mm; ZMA 412298 View Materials a.

GoogleMaps

Paratypes

INDONESIA • 7 spec. (vouchers for van Benthem Jutting 1941); same data as for holotype; ZMA 412298 View Materials 16 spec. (vouchers for van Benthem Jutting 1941); same data as for holotype; ZMA 410726 View Materials GoogleMaps 6 spec. (vouchers for van Benthem Jutting 1941); Nusa Kambangan Island ; 7°44′ S, 108°53′ E; ZMA 407622 View Materials GoogleMaps .

GoogleMaps

Description

SHELL (Fig. 49; Tables 3–4 View Table 3 View Table 4 ). Depressed conical, with 5.25–6 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 and a granular sculpture; scaly processes sparse, mainly at periphery; tuberculate around umbilicus; brownish-corneous; body whorl keeled; aperture rounded rhombic; upper insertion of peristome descending; peristome expanded, reflexed and thickened; umbilicus slightly eccentric, wide, comprising 32–40% of shell diameter, hardly obscured by columellar edge.

GENITALIA ( Figs 18 View Figs 15–24 , 32 View Figs 29–47 ; Table 4 View Table 4 ). Atrium short; penis long, becoming broader proximally; with a small globular bulge at proximal end; without penis coecum; membranaceous sheath around distal part of penis connected with proximal part of epiphallus by tissue; penial retractor runs from diaphragm to proximal part of cylindrical epiphallus; flagellum moderately long, broader distal part usually slightly crenated, proximal part tapering towards its proximal end, without node; vas deferens narrow and long; vagina long; oviduct short, broad, proximally tapering; 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 nusakambangensis sp. nov. resembles L. winteriana , from which it differs in the slightly more distinct keel, the smaller globular bulge at the proximal end of the penis and a longer tapering proximal part of the flagellum. In shell shape and the keeled body whorl, L. nusakambangensis sp. nov. also resembles L. rotatoria , from which it differs in the smaller shell (D 11.9–15.0 mm vs 15.6–19.1 mm in L. rotatoria ) with a wider umbilicus (U/D 0.32–0.40 vs 0.24–0.32 in L. rotatoria ).

Landouria nusakambangensis sp. nov. occurs sympatrically with L. pakidulan sp. nov. ( Fig. 85 View Figs 85–88 ), from which it can easily be distinguished by the brownish, keeled shell.

Distribution

Landouria nusakambangensis sp. nov. is known only from Nusa Kambangan Island (Fig. 52).

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Stylommatophora

Family

Camaenidae

Genus

Landouria

Loc

Landouria nusakambangensis

Nurinsiyah, Ayu Savitri, Neiber, Marco T. & Hausdorf, Bernhard 2019
2019
Loc

Landouria rotatoria –

van Benthem Jutting W. S. S. 1941: 310
1941
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