228 lines
18 KiB
XML
228 lines
18 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.692.14706" ID-GBIF-Dataset="81f065e7-a342-495c-9855-21bc26539311" ID-PMC="PMC5672734" ID-Pensoft-Pub="1313-2970-692-1" ID-PubMed="29133987" ID-ZBK="1B7C3F517CF543338EAB1CB1BD9D8A07" ModsDocAuthor="" ModsDocDate="2017" ModsDocID="1313-2970-692-1" ModsDocOrigin="ZooKeys 692" ModsDocTitle="A review of the land snail genus Alycaeus (Gastropoda, Alycaeidae) in Peninsular Malaysia" checkinTime="1503352913593" checkinUser="pensoft" docAuthor="Foon, Junn Kitt & Liew, Thor-Seng" docDate="2017" docId="E05F7E97C89CE75DFF76270954178F53" docLanguage="en" docName="ZooKeys 692: 1-81" docOrigin="ZooKeys 692" docSource="http://dx.doi.org/10.3897/zookeys.692.14706" docTitle="Alycaues roebeleni Moellendorff 1894" docType="treatment" docVersion="5" lastPageNumber="40" masterDocId="FF8E6C15A17CDA48FFA7FFE36C7CFFA2" masterDocTitle="A review of the land snail genus Alycaeus (Gastropoda, Alycaeidae) in Peninsular Malaysia" masterLastPageNumber="81" masterPageNumber="1" pageNumber="40" updateTime="1668164728433" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>A review of the land snail genus Alycaeus (Gastropoda, Alycaeidae) in Peninsular Malaysia</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Foon, Junn Kitt</mods:namePart>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Liew, Thor-Seng</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2017</mods:date>
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<mods:detail type="volume">
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<mods:number>692</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>81</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.692.14706</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.692.14706</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-692-1</mods:identifier>
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<mods:identifier type="ZBK">1B7C3F517CF543338EAB1CB1BD9D8A07</mods:identifier>
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<mods:identifier type="ZooBank">1B7C3F517CF543338EAB1CB1BD9D8A07</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="132786238" LSID="urn:lsid:plazi:treatment:E05F7E97C89CE75DFF76270954178F53" httpUri="http://treatment.plazi.org/id/E05F7E97C89CE75DFF76270954178F53" lastPageNumber="40" pageId="39" pageNumber="40">
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<subSubSection pageId="39" pageNumber="40" type="nomenclature">
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<paragraph pageId="39" pageNumber="40">
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<taxonomicName authority="Moellendorff, 1894" authorityName="Moellendorff" authorityYear="1894" class="Gastropoda" family="Alycaeidae" genus="Alycaues" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Alycaues roebeleni" order="Architaenioglossa" pageId="39" pageNumber="40" phylum="Mollusca" rank="species" species="roebeleni">
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Alycaues roebeleni
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<normalizedToken originalValue="Möllendorff">Moellendorff</normalizedToken>
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, 1894
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</taxonomicName>
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Figures 26, 31W
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</paragraph>
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</subSubSection>
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<subSubSection pageId="39" pageNumber="40" type="reference_group">
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<paragraph pageId="39" pageNumber="40">
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<taxonomicName class="Gastropoda" family="Alycaeidae" genus="Alycaeus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Alycaeus roebeleni" order="Architaenioglossa" pageId="39" pageNumber="40" phylum="Mollusca" rank="species" species="roebeleni">Alycaeus roebeleni</taxonomicName>
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<normalizedToken originalValue="Möllendorff">Moellendorff</normalizedToken>
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, 1894: 146-156;
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<bibRefCitation author="Tarruella, A" journalOrPublisher="Spira" pageId="53" pageNumber="54" pagination="71 - 76" title="Listado taxonomico ilustrado de la familia Cyclophoridae J. E. Gray, 1847 (Mollusca: Gastropoda): Parte 2. La subfamilia Alycaeinae J. E. Gray, 1850." url="http://www.molluscat.com/assets/spira_4_12_7.pdf" volume="4" year="2011">
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Tarruella and
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<normalizedToken originalValue="Domènech">Domenech</normalizedToken>
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2011
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</bibRefCitation>
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: 73, figure 3A.
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</paragraph>
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<paragraph pageId="39" pageNumber="40">
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<taxonomicName class="Gastropoda" family="Alycaeidae" genus="Alycaeus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Alycaeus (Alycaeus) roebelini" order="Architaenioglossa" pageId="39" pageNumber="40" phylum="Mollusca" rank="species" species="roebelini" subGenus="Alycaeus">Alycaeus (Alycaeus) roebelini</taxonomicName>
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[sic]:
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<bibRefCitation author="Laidlaw, FF" journalOrPublisher="Journal of the Malayan Branch of the Royal Asiatic Society" pageId="51" pageNumber="52" pagination="25 - 37" title="A list of the Land and Fresh-water Mollusca of the Malay Peninsula with notes." url="http://www.jstor.org/stable/41559818" volume="6" year="1928">Laidlaw 1928</bibRefCitation>
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: 35.
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</paragraph>
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<paragraph pageId="39" pageNumber="40">
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<taxonomicName class="Gastropoda" family="Alycaeidae" genus="Alycaeus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Alycaeus (Alycaeus) roebeleni" order="Architaenioglossa" pageId="39" pageNumber="40" phylum="Mollusca" rank="species" species="roebeleni" subGenus="Alycaeus">Alycaeus (Alycaeus) roebeleni</taxonomicName>
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:
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<bibRefCitation pageId="39" pageNumber="40">Zilch 1957</bibRefCitation>
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: 147, plate 6, figure 27.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="39" pageNumber="40" type="type locality">
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<paragraph pageId="39" pageNumber="40">Type locality.</paragraph>
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<paragraph pageId="39" pageNumber="40">Samui Islands (= Koh Samui archipelago), Thailand.</paragraph>
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</subSubSection>
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<subSubSection pageId="39" pageNumber="40" type="type material">
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<paragraph pageId="39" pageNumber="40">Type material.</paragraph>
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<paragraph pageId="39" pageNumber="40">
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<taxonomicName genus="Lectotype" lsidName="Lectotype" pageId="39" pageNumber="40" rank="genus">Lectotype</taxonomicName>
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. Koh Samui, Thailand: SMF 109317 (Seen).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="39" pageNumber="40" type="materials_examined">
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<paragraph pageId="39" pageNumber="40">Other examined materials.</paragraph>
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<paragraph pageId="39" pageNumber="40">PRS 11 Bukit Tok Seri, Perlis: BOR/MOL 6863/1, BOR/MOL 8368/2. PRS 17 Gunung Chabang, Perlis: BOR/MOL 6230/1, BOR/MOL 6869/1, BOR/MOL 6873/6, BOR/MOL 8374/8. PRS 19 Bukit Chuping, Perlis: BOR/MOL 6859/1, BOR/MOL 8363/30, BOR/MOL 12980/1, ZRC 1975.2.22.99-126/29. Koh Samui, Thailand: RMNH 153575/2, ZMA 317517/1, ANSP 81380/2. Mountain north of Phatthalung, Thailand: ANSP 446393/1.</paragraph>
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</subSubSection>
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<subSubSection pageId="39" pageNumber="40" type="description">
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<paragraph pageId="39" pageNumber="40">Description.</paragraph>
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<paragraph pageId="39" pageNumber="40">Protoconch. Smooth.</paragraph>
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<paragraph pageId="39" pageNumber="40">Shell shape. Conical. Shell height: 7.20-8.01 mm. Shell width: 8.94-10.08 mm.</paragraph>
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<paragraph pageId="39" pageNumber="40">
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Spire. Spire height: 2.17-2.74 mm. Spire width: 3.13-3.68 mm. Number of whorls: up to 4
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<normalizedToken originalValue="½">1/2</normalizedToken>
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. Spire shape: oblong conical. Whorl periphery rounded. Umbilicus open.
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</paragraph>
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<paragraph pageId="39" pageNumber="40">
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Whorl constriction. At about 4
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<normalizedToken originalValue="¼">1/4</normalizedToken>
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whorls posterior of protoconch.
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</paragraph>
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<paragraph pageId="39" pageNumber="40">Breathing tube. Length: 0.71-0.94 mm.</paragraph>
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<paragraph pageId="39" pageNumber="40">Aperture and peristome. Aperture circular, very expanded. Aperture height: 4.39-5.21 mm. Aperture width: 4.08-5.01 mm. Peristome single to double, not thickened. Peristome orientation 44-49° oblique with respect to the coiling axis.</paragraph>
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<paragraph pageId="39" pageNumber="40">Spiral lines. Indistinct. Regularly spaced. Approximately 23-37 lines per 1 mm.</paragraph>
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<paragraph pageId="39" pageNumber="40">Radial ribs running anterior of breathing tube. Radial ribs pronounced, evenly spaced. Approximately 8-9 ribs per 1 mm.</paragraph>
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<paragraph pageId="39" pageNumber="40">Radial ribs running perpendicular to breathing tube. Radial ribs pronounced, evenly spaced. Approximately 7-10 ribs per 1 mm.</paragraph>
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<paragraph pageId="39" pageNumber="40">Radial ribs running posterior of breathing tube. Radial ribs pronounced, unevenly spaced immediately posterior of constriction.</paragraph>
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<paragraph pageId="39" pageNumber="40">Operculum. Concave, rounded. Exterior covered with thin calcareous layer, smooth. Interior covered with thick proteinaceous coating, smooth, mamillated.</paragraph>
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<paragraph pageId="39" pageNumber="40">Shell colour. Yellow at apical whorls. Either fades to white towards ultimate whorl or remain yellow throughout.</paragraph>
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<paragraph pageId="39" pageNumber="40">Living animal. Unknown.</paragraph>
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</subSubSection>
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<subSubSection pageId="39" pageNumber="40" type="habitat">
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<paragraph pageId="39" pageNumber="40">Habitat and ecology.</paragraph>
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<paragraph pageId="39" pageNumber="40">Lives on limestone rock crevices covered by mosses. In shady forests on limestone hills.</paragraph>
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</subSubSection>
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<subSubSection pageId="39" pageNumber="40" type="distribution">
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<paragraph pageId="39" pageNumber="40">Distribution range.</paragraph>
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<paragraph pageId="39" pageNumber="40">
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Restricted to limestone hills of the Chuping geological formation in central Perlis. Elsewhere, in Koh Samui and Phatthalung, southern Thailand (
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<bibRefCitation author="Moellendorff, von OF" journalOrPublisher="Proceedings of the Zoological Society of London" pageId="52" pageNumber="53" pagination="146 - 156" title="On a collection of land-shells from the Samui Islands, Gulf of Siam." url="http://www.biodiversitylibrary.org/item/97157215" volume="1894" year="1894">
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<normalizedToken originalValue="Möllendorff">Moellendorff</normalizedToken>
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1894
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</bibRefCitation>
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, materials examined).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="39" pageNumber="40" type="differential diagnosis">
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<paragraph pageId="39" pageNumber="40">Differential diagnosis.</paragraph>
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<paragraph pageId="39" pageNumber="40">
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<taxonomicName class="Gastropoda" family="Alycaeidae" genus="Alycaeus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Alycaeus roebeleni" order="Architaenioglossa" pageId="39" pageNumber="40" phylum="Mollusca" rank="species" species="roebeleni">Alycaeus roebeleni</taxonomicName>
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is most similar to
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<taxonomicName lsidName="A. perakensis" pageId="39" pageNumber="40" rank="species" species="perakensis">A. perakensis</taxonomicName>
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in shell shape but is larger (larger by about 0.97 mm in shell height, 1.96 mm in shell width), spire taller and wider (taller by about 0.22 mm in spire height, wider by about 0.31 mm in spire width), penultimate whorl wider as well as peristome more expanded (
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<bibRefCitation author="Moellendorff, von OF" journalOrPublisher="Proceedings of the Zoological Society of London" pageId="52" pageNumber="53" pagination="146 - 156" title="On a collection of land-shells from the Samui Islands, Gulf of Siam." url="http://www.biodiversitylibrary.org/item/97157215" volume="1894" year="1894">
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<normalizedToken originalValue="Möllendorff">Moellendorff</normalizedToken>
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1894
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</bibRefCitation>
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).
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<taxonomicName class="Gastropoda" family="Alycaeidae" genus="Alycaeus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Alycaeus roebeleni" order="Architaenioglossa" pageId="39" pageNumber="40" phylum="Mollusca" rank="species" species="roebeleni">Alycaeus roebeleni</taxonomicName>
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also differs from
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<taxonomicName lsidName="A. perakensis" pageId="39" pageNumber="40" rank="species" species="perakensis">A. perakensis</taxonomicName>
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in its operculum, which has a smooth exterior and thick, brown proteinaceous layer at the interior. The spire height of
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<taxonomicName lsidName="A. roebeleni" pageId="39" pageNumber="40" rank="species" species="roebeleni">A. roebeleni</taxonomicName>
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is quite variable across its range but never as tall as
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<taxonomicName lsidName="A. perakensis" pageId="39" pageNumber="40" rank="species" species="perakensis">A. perakensis</taxonomicName>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="39" pageNumber="40" type="discussion">
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<paragraph pageId="39" pageNumber="40">Discussion.</paragraph>
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<paragraph pageId="39" pageNumber="40">
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This species was considered closely related to
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<taxonomicName lsidName="A. perakensis" pageId="39" pageNumber="40" rank="species" species="perakensis">A. perakensis</taxonomicName>
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by
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<bibRefCitation author="Moellendorff, von OF" journalOrPublisher="Proceedings of the Zoological Society of London" pageId="52" pageNumber="53" pagination="146 - 156" title="On a collection of land-shells from the Samui Islands, Gulf of Siam." url="http://www.biodiversitylibrary.org/item/97157215" volume="1894" year="1894">
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<normalizedToken originalValue="Möllendorff">Moellendorff</normalizedToken>
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(1894)
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</bibRefCitation>
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, which we concur with, based on examined specimens. However, contrary to the
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<bibRefCitation author="Moellendorff, von OF" journalOrPublisher="Proceedings of the Zoological Society of London" pageId="52" pageNumber="53" pagination="146 - 156" title="On a collection of land-shells from the Samui Islands, Gulf of Siam." url="http://www.biodiversitylibrary.org/item/97157215" volume="1894" year="1894">
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<normalizedToken originalValue="Möllendorff">Moellendorff</normalizedToken>
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(1894)
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</bibRefCitation>
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claim that the operculum is entirely proteinaceous, we show that
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<taxonomicName lsidName="A. roebeleni" pageId="39" pageNumber="40" rank="species" species="roebeleni">A. roebeleni</taxonomicName>
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has proteinaceous interior and calcareous exterior layers. Despite clear distinctions made between
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<taxonomicName lsidName="A. roebeleni" pageId="39" pageNumber="40" rank="species" species="roebeleni">A. roebeleni</taxonomicName>
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and
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<taxonomicName lsidName="A. perakensis" pageId="39" pageNumber="40" rank="species" species="perakensis">A. perakensis</taxonomicName>
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in
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<bibRefCitation author="Moellendorff, von OF" journalOrPublisher="Proceedings of the Zoological Society of London" pageId="52" pageNumber="53" pagination="146 - 156" title="On a collection of land-shells from the Samui Islands, Gulf of Siam." url="http://www.biodiversitylibrary.org/item/97157215" volume="1894" year="1894">
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<normalizedToken originalValue="Möllendorff">Moellendorff</normalizedToken>
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(1894)
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</bibRefCitation>
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, the two species remain confused by past workers. An
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<taxonomicName lsidName="A. roebeleni" pageId="39" pageNumber="40" rank="species" species="roebeleni">A. roebeleni</taxonomicName>
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collection lot in ZRC was originally labelled as
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<taxonomicName lsidName="A. perakensis" pageId="39" pageNumber="40" rank="species" species="perakensis">A. perakensis</taxonomicName>
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(ZRC 1975.2.22.99-126). A specimen labelled as
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<taxonomicName lsidName="A. roebeleni" pageId="39" pageNumber="40" rank="species" species="roebeleni">A. roebeleni</taxonomicName>
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from Banang Pupo, Yala, Thailand is actually
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<taxonomicName lsidName="A. perakensis" pageId="39" pageNumber="40" rank="species" species="perakensis">A. perakensis</taxonomicName>
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(ANSP 446394).
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<taxonomicName class="Gastropoda" family="Alycaeidae" genus="Alycaeus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Alycaeus roebeleni" order="Architaenioglossa" pageId="39" pageNumber="40" phylum="Mollusca" rank="subSpecies" species="roebeleni" subSpecies="minor">Alycaeus roebeleni minor</taxonomicName>
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<normalizedToken originalValue="Möllendorff">Moellendorff</normalizedToken>
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, 1894, from Biserat, Yala, Thailand is also likely
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<taxonomicName lsidName="A. perakensis" pageId="39" pageNumber="40" rank="species" species="perakensis">A. perakensis</taxonomicName>
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(see Remarks in
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<taxonomicName lsidName="A. perakensis" pageId="39" pageNumber="40" rank="species" species="perakensis">A. perakensis</taxonomicName>
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). The Perlis population appears to be the southern-end of the distribution range for
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<taxonomicName lsidName="A. roebeleni" pageId="39" pageNumber="40" rank="species" species="roebeleni">A. roebeleni</taxonomicName>
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.
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</paragraph>
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<caption pageId="39" pageNumber="40">
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<paragraph pageId="39" pageNumber="40">
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Figure 26.
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<taxonomicName class="Gastropoda" family="Alycaeidae" genus="Alycaeus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Alycaeus roebeleni" order="Architaenioglossa" pageId="39" pageNumber="40" phylum="Mollusca" rank="species" species="roebeleni">Alycaeus roebeleni</taxonomicName>
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<normalizedToken originalValue="Möllendorff">Moellendorff</normalizedToken>
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, 1894.
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<normalizedToken originalValue="A–E">A-E</normalizedToken>
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Shell of syntype, SMF 109317
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<normalizedToken originalValue="F–J">F-J</normalizedToken>
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Shell of BOR/MOL 8363
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<normalizedToken originalValue="K–M">K-M</normalizedToken>
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Close up of shell of BOR/MOL 8363
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<normalizedToken originalValue="N–Q">N-Q</normalizedToken>
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Operculum of BOR/MOL 8363. Scale bars:
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<normalizedToken originalValue="A–J">A-J</normalizedToken>
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, K, L, M,
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<normalizedToken originalValue="N–Q">N-Q</normalizedToken>
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1 mm. Photographs
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<normalizedToken originalValue="A–E">A-E</normalizedToken>
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by
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<normalizedToken originalValue="Páll-Gergely">Pall-Gergely</normalizedToken>
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Barna, courtesy of R. Janssen, SMF. Photographs
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<normalizedToken originalValue="F–Q">F-Q</normalizedToken>
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by Junn Kitt Foon.
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</paragraph>
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</caption>
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</subSubSection>
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</treatment>
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</document> |