166 lines
15 KiB
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166 lines
15 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.401.7075" ID-GBIF-Dataset="bed72a2a-b126-495d-be31-c046b065f57d" ID-PMC="PMC4023267" ID-Pensoft-Pub="1313-2970-401-45" ID-PubMed="24843260" ID-ZBK="03F455BB9AA64D5DA89246C6A6D3F42A" ModsDocAuthor="" ModsDocDate="2014" ModsDocID="1313-2970-401-45" ModsDocOrigin="ZooKeys 401" ModsDocTitle="Revision of the carnivorous snail genus Discartemon Pfeiffer, 1856, with description of twelve new species (Pulmonata, Streptaxidae)" checkinTime="1451245981463" checkinUser="pensoft" docAuthor="Siriboon, Thanit, Sutcharit, Chirasak, Naggs, Fred, Rowson, Ben & Panha, Somsak" docDate="2014" docId="DAD49FFBCBDB27E4A683DF96AF8D2FA3" docLanguage="en" docName="ZooKeys 401: 45-107" docOrigin="ZooKeys 401" docSource="http://dx.doi.org/10.3897/zookeys.401.7075" docTitle="Discartemon discadentus Siriboon & Panha, sp. n." docType="treatment" docUuid="E19CE74B-1858-4813-86E4-EACA08E703F0" docUuidSource="ZooBank" docVersion="4" lastPageNumber="59" masterDocId="FFC1FFB4FFBBFFC5FF9AFFC9FFBFEB04" masterDocTitle="Revision of the carnivorous snail genus Discartemon Pfeiffer, 1856, with description of twelve new species (Pulmonata, Streptaxidae)" masterLastPageNumber="107" masterPageNumber="45" pageNumber="58" updateTime="1668158229784" 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>Revision of the carnivorous snail genus Discartemon Pfeiffer, 1856, with description of twelve new species (Pulmonata, Streptaxidae)</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>Siriboon, Thanit</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>Sutcharit, Chirasak</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>Naggs, Fred</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>Rowson, Ben</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>Panha, Somsak</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>2014</mods:date>
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<mods:detail type="volume">
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<mods:number>401</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>45</mods:start>
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<mods:end>107</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.401.7075</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.401.7075</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-401-45</mods:identifier>
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<mods:identifier type="ZBK">03F455BB9AA64D5DA89246C6A6D3F42A</mods:identifier>
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<mods:identifier type="ZooBank">03F455BB9AA64D5DA89246C6A6D3F42A</mods:identifier>
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</mods:mods>
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<treatment ID-GBIF-Taxon="152052543" LSID="urn:lsid:zoobank.org:act:E19CE74B-1858-4813-86E4-EACA08E703F0" httpUri="http://treatment.plazi.org/id/DAD49FFBCBDB27E4A683DF96AF8D2FA3" lastPageId="14" lastPageNumber="59" pageId="13" pageNumber="58">
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<subSubSection pageId="13" pageNumber="58" type="nomenclature">
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<paragraph pageId="13" pageNumber="58">
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6.
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<taxonomicName LSID="http://zoobank.org/E19CE74B-1858-4813-86E4-EACA08E703F0" authority="Siriboon & Panha" class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon discadentus" order="Stylommatophora" pageId="13" pageNumber="58" phylum="Mollusca" rank="species" species="discadentus">Discartemon discadentus Siriboon & Panha</taxonomicName>
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<taxonomicNameLabel pageId="13" pageNumber="58">sp. n.</taxonomicNameLabel>
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Figs 2B, 4I, J, 12A, B, 17
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<normalizedToken originalValue="F–I">F-I</normalizedToken>
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, 23, Table 1
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</paragraph>
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</subSubSection>
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<subSubSection pageId="13" pageNumber="58" type="type material">
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<paragraph pageId="13" pageNumber="58">Type material.</paragraph>
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<paragraph pageId="13" pageNumber="58">
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Holotype CUMZ 6244 (Fig. 4I). Measurement: shell height 4.5 mm, shell width 12.1 mm, and with 6 whorls. Paratypes: CUMZ 6003 (2 shells), 6209 (1 specimen in ethanol; Figs 2B, 12A, B, 17
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<normalizedToken originalValue="F–I">F-I</normalizedToken>
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), 6258 (4 shells), NHMUK 20130672 (1 shell), and SMF (1 shell) from the type locality.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="13" pageNumber="58" type="type locality">
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<paragraph pageId="13" pageNumber="58">Type locality.</paragraph>
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<paragraph pageId="13" pageNumber="58">
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Wat Tam Yai, Thachana, Suratthani, Thailand (
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="9.539306">9°32'21.5"N</geoCoordinate>
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,
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="99.1915">99°11'29.4"E</geoCoordinate>
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).
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</paragraph>
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</subSubSection>
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<subSubSection lastPageId="14" lastPageNumber="59" pageId="13" pageNumber="58" type="diagnosis">
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<paragraph pageId="13" pageNumber="58">Diagnosis.</paragraph>
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<paragraph lastPageId="14" lastPageNumber="59" pageId="13" pageNumber="58">
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This new species can be distinguished from
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon discus" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="discus">
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<pageBreakToken pageId="14" pageNumber="59" start="start">Discartemon</pageBreakToken>
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discus
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</taxonomicName>
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and
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon sykesi" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="sykesi">Discartemon sykesi</taxonomicName>
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by having transverse ridges that diminish below the periphery, and having an apertural dentition with five lamellae. In comparison,
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon sykesi" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="sykesi">Discartemon sykesi</taxonomicName>
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has a smaller shell and
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon discus" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="discus">Discartemon discus</taxonomicName>
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has a higher spire. The genitalia of
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon discus" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="discus">Discartemon discus</taxonomicName>
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have a short penis, penial sheath and free oviduct, and long vagina while
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon discadentus" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="discadentus">Discartemon discadentus</taxonomicName>
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sp. n. has a very long penis, penial sheath and free oviduct, and short vagina.
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon discadentus" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="discadentus">Discartemon discadentus</taxonomicName>
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sp. n. differs from
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon nummus" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="nummus">Discartemon nummus</taxonomicName>
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and
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon khaosokensis" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="khaosokensis">Discartemon khaosokensis</taxonomicName>
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in having a larger shell with higher spire, in lacking a peripheral keel, and in usually having five apertural lamellae. The last whorl of
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon khaosokensis" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="khaosokensis">Discartemon khaosokensis</taxonomicName>
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is rapidly expanded, while
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon nummus" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="nummus">Discartemon nummus</taxonomicName>
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has a regularly expanded last whorl and Y-shaped parietal lamella. The genitalia of
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon discadentus" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="discadentus">Discartemon discadentus</taxonomicName>
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sp. n. differ from those of
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<taxonomicName class="Gastropoda" family="Streptaxidae" genus="Discartemon" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discartemon nummus" order="Stylommatophora" pageId="14" pageNumber="59" phylum="Mollusca" rank="species" species="nummus">Discartemon nummus</taxonomicName>
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in the long and slender penis, penial wall with reticulated folds, and long penial hooks located on conical penial papillae.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="14" pageNumber="59" type="description">
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<paragraph pageId="14" pageNumber="59">Description.</paragraph>
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<paragraph pageId="14" pageNumber="59">
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Shell. Shell flattened, white and translucent; whorls 6; spire only slightly elevated; suture distinct. Shell surface glossy with transverse ridges that diminish below periphery; varices present. Embryonic shell large, about
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<normalizedToken originalValue="2½">21/2</normalizedToken>
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whorls, with smooth surface; following whorls regularly coiled. Last whorl angular, intermediately expanded; umbilicus very wide and showing all preceding whorls. Aperture semi-ovate; peristome discontinuous, thickened and expanded. Apertural dentition usually with one strong parietal, one palatal, one small basal and one strong columellar lamella. A small supracolumellar lamella is sometimes present (Fig. 4I).
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</paragraph>
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<paragraph pageId="14" pageNumber="59">Genital organs. Atrium (at) short; penis (p) very long and slender. Penial sheath (ps) thin, extending about five-sixths of penis length; penial sheath retractor muscle very thin (psr), originating at genital orifice wall and inserting distally on penial sheath (Fig. 12A). Vas deferens (vd) passes through a very short part of penial sheath before entering into penis distally (Fig. 12B). Penial retractor muscle (pr) thin and very long, inserting at penis and vas deferens junction.</paragraph>
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<paragraph pageId="14" pageNumber="59">
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Internal wall of atrium generally corrugated (Fig. 17F). Penial wall with scattered and transparent penial hooks, about 6 hooks/200
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<normalizedToken originalValue="µm">µm</normalizedToken>
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2 (Fig. 17G); hooks located on conical penial papillae (pp) separated by low reticulated folds. Penial hooks small (<0.03 mm in length), expanded at base, tips pointed and curved towards genital orifice (Fig. 17H).
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</paragraph>
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<paragraph pageId="14" pageNumber="59">Vagina (v) short, about one seventh of penis length. Gametolytic duct (gd) a long tube extending as far as albumin gland; gametolytic sac (gs) ovate. Proximal free oviduct (fo) convoluted and distally long and thick; oviduct (ov) enlarged and folded. Prostate gland inconspicuous and bound to oviduct. Talon (ta) small, short and club shaped. Hermaphroditic duct (hd) bearing long seminal vesicle (sv) about four times longer than the length from talon to branching point of seminal vesicle (Fig. 12A).</paragraph>
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<paragraph pageId="14" pageNumber="59">Vaginal wall generally with smooth surface of reticulated vaginal folds (Fig. 17I).</paragraph>
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</subSubSection>
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<subSubSection pageId="14" pageNumber="59" type="etymology">
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<paragraph pageId="14" pageNumber="59">Etymology.</paragraph>
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<paragraph pageId="14" pageNumber="59">
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The specific epithet
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<normalizedToken originalValue="“discadentus”">"discadentus"</normalizedToken>
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is derived from the Latin
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<normalizedToken originalValue="“discus”">"discus"</normalizedToken>
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meaning
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<normalizedToken originalValue="“disc”">"disc"</normalizedToken>
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and
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<normalizedToken originalValue="“dentatus”">"dentatus"</normalizedToken>
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meaning
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<normalizedToken originalValue="“teeth”">"teeth"</normalizedToken>
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.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="14" pageNumber="59" type="distribution">
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<paragraph pageId="14" pageNumber="59">Distribution.</paragraph>
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<paragraph pageId="14" pageNumber="59">This species seems to be restricted to limestone areas in Suratthani Province, Thailand. Tam Khuha, Kanchanadit District, is an isolated limestone hill about 40 km southeast of the type locality and Wat Tam Wararam, Phanom District, is in the limestone mountains near Ratchaprapa Dam, about 70 km southwest of the type locality.</paragraph>
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</subSubSection>
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<subSubSection pageId="14" pageNumber="59" type="remarks">
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<paragraph pageId="14" pageNumber="59">Remarks.</paragraph>
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<paragraph pageId="14" pageNumber="59">This species shows variation in shell size and the presence of the infrapalatal, upper palatal and supracolumellar lamellae. Some specimens from Phanom, Suratthani (CUMZ 3571, 3582) possess an upper palatal and supracolumellar lamella, and an infrapalatal lamella is present in one paratype shell (CUMZ 6003). Populations from Tam Khuha, Suratthani (CUMZ 6004) exhibit a relatively smaller shell size (width about 11 mm). This new species is apparently rare and only extensive searching revealed living animals.</paragraph>
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</subSubSection>
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</treatment>
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</document> |