Landouria conoidea Nurinsiyah & Neiber & Hausdorf 2019, comb. nov.
Authors/Creators
- 1. Museum Zoologicum Bogoriense, Research Center for Biology, Indonesian Institute of Science, Cibinong, West Java, Indonesia.
- 2. Zoological Museum, Center of Natural History, University of Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany
- 3. Zoological Museum, Center of Natural History, University of Hamburg, Martin-Luther-King-Platz 3, 20146 Hamburg, Germany.
Description
Landouria conoidea (Leschke, 1914) comb. nov.
Figs 4, 6, 53; Tables 3–4
Plectotropis conoidea Leschke, 1914: 212, figs 8–9 (“Buitenzorg”).
Landouria rotatoria – van Benthem Jutting 1950: 461 (in part). (not Pfeiffer, 1842)
Diagnosis
Landouria conoidea is characterized by a small, conical, sharply keeled shell with tubercles all over the shell surface.
Material examined
Syntypes
INDONESIA • 8 spec.; West Java, Bogor; 6°36′ S, 106°48′ E; ZMH 98144.
Other material
INDONESIA • 10 spec.; West Java, Bogor; 6°36′ S, 106°48′ E; ZMH 98145.
Description
SHELL (Figs 4, 6; Tables 3–4). Conical, with 4.75–5 slightly convex whorls; protoconch almost smooth; teleoconch with fine, irregular wrinkles; apical side without distinct incised spiral lines, umbilical side with indistinct spiral lines; with tubercles all over shell surface that carry scaly processes or hairs mainly at periphery; tuberculate around umbilicus; brownish-corneous; body whorl sharply keeled at beginning; aperture almost circular; upper insertion of peristome slightly descending; peristome expanded, reflexed and slightly thickened; umbilicus hardly eccentric, wide, comprising 30–43% of shell diameter, hardly obscured by columellar edge.
GENITALIA. Unknown.
Remarks
Landouria conoidea differs from L. winteriana, which occurs in the same region in West Java, in the smaller shell diameter (7.6–8.7 mm vs 9.7–12.6 mm in L. winteriana), the higher shell form (D/H 1.48–1.54 vs 1.55–2.07 in L. winteriana), the more pronounced keel and the presence of tubercles all over the shell surface (Fig. 6).
With regard to the conical shell form, L. conoidea resembles L. naggsi sp. nov. (Fig. 25), from which it differs in the less elevated (D/H 1.48–1.54 vs 1.21–1.37 in L. naggsi sp. nov.), smaller shell (D 7.6– 8.7 mm vs 11.6–14.0 mm in L. naggsi sp. nov.) with fewer whorls (4.75–5 vs 6.25–7 in L. naggsi sp. nov.), the more pronounced keel and the shell sculpture consisting of tubercles vs longish scales in L. naggsi sp. nov.
Distribution
Landouria conoidea is so far known only from Bogor in West Java (Fig. 53).
Notes
Files
Files
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System files
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- ZMH
- Material sample ID
- 98144 , 98145
- Scientific name authorship
- Nurinsiyah & Neiber & Hausdorf
- Kingdom
- Animalia
- Phylum
- Mollusca
- Order
- Stylommatophora
- Family
- Camaenidae
- Genus
- Landouria
- Species
- conoidea
- Taxon rank
- species
- Taxonomic status
- comb. nov.
- Type status
- syntype
- Taxonomic concept label
- Landouria conoidea (Leschke, 1914) sec. Nurinsiyah, Neiber & Hausdorf, 2019
References
- Leschke M. 1914. Zur Molluskenfauna von Java und Celebes. Mitteilungen aus dem naturhistorischen Museum in Hamburg 31: 205 - 284, 1 pl.
- van Benthem Jutting W. S. S. 1950. Systematic studies on the non-marine Mollusca of the Indo-Australian archipelago. II. Critical revision of the Javanese pulmonate land-shells of the families Helicarionidae, Pleurodontidae, Fruticicolidae and Streptaxidae. Treubia 20: 381 - 505.
- Pfeiffer L. 1842. Symbolae ad Historiam Heliceorum. Sectio alterna. T. Fischer, Cassel [Kassel, Germany]. https: // doi. org / 10.5962 / bhl. title. 11903
- Mousson A. 1848. Ueber die Land- und Susswassermollusken von Java. Mittheilungen der naturforschenden Gesellschaft in Zurich 1: 264 - 273.