249 lines
30 KiB
XML
249 lines
30 KiB
XML
<document id="414A89E4F72903E4DD7C0D9F878DD51F" ID-DOI="10.5281/zenodo.198925" ID-GBIF-Dataset="b168cdce-1f22-42a6-ace6-f5ae1856cde3" ID-ISSN="1175-5326" ID-Zenodo-Dep="198925" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1460317550632" checkinUser="plazi" docAuthor="Thandar, Ahmed S., Zettler, Michael L. & Arumugam, Preyan" docDate="2010" docId="5E0B315DFFD23E0BFF2879092B69F8EC" docLanguage="en" docName="zt02655p024.pdf" docOrigin="Zootaxa 2655" docStyle="DocumentStyle:890A69B780ED73D6DB8551B71C8AC79E.4:Zootaxa.2009-2012.journal_article" docStyleId="890A69B780ED73D6DB8551B71C8AC79E" docStyleName="Zootaxa.2009-2012.journal_article" docStyleVersion="4" docTitle="Ocnus paracorbulus Thandar, Zettler & Arumugam, 2010, n. sp." docType="treatment" docVersion="10" lastPageNumber="7" masterDocId="A2324925FFD13E0DFFBF7E0B282DFFF0" masterDocTitle="Additions to the sea cucumber fauna of Namibia and Angola, with descriptions of new taxa (Echinodermata: Holothuroidea)" masterLastPageNumber="24" masterPageNumber="1" pageNumber="4" updateTime="1698255494658" updateUser="plazi">
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<mods:titleInfo id="0396B6E6C0D0FFA15152A4E0EC604B0B">
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<mods:title id="3A826B48863B7AFD6D8D9682C9A4E417">Additions to the sea cucumber fauna of Namibia and Angola, with descriptions of new taxa (Echinodermata: Holothuroidea)</mods:title>
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</mods:titleInfo>
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<mods:name id="D8A3F3816ED44660A3D3004B08F4E79A" type="personal">
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<mods:namePart id="3D45D4C0A25D535AD661D205ECCBFF44">Thandar, Ahmed S.</mods:namePart>
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<mods:name id="6837C17EFD9DE5D86F21DBD91B409A31" type="personal">
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<mods:roleTerm id="A85C31FC18E509BE2056CBAA208FE8CA">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="80CA213AF688BE776AF85AB42D9EB3FE">Zettler, Michael L.</mods:namePart>
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</mods:name>
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<mods:name id="24F62FD4CDB2F981C97879FC987CAF6B" type="personal">
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<mods:roleTerm id="EB798AC0760EF978CA439E78763D8D16">Author</mods:roleTerm>
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</mods:role>
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<mods:namePart id="3D1BEAA697D53ABEEFA185BA4BCA4777">Arumugam, Preyan</mods:namePart>
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</mods:name>
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<mods:typeOfResource id="5F2E17806F9FC16467963CD20C408944">text</mods:typeOfResource>
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<mods:title id="101C13936165A6BC1A0A101D3B27893C">Zootaxa</mods:title>
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</mods:titleInfo>
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<mods:part id="0F25281B8979F741A51D0F94EB7B662B">
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<mods:date id="30EF6E3AAB78C89CF4244E212750044C">2010</mods:date>
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<mods:detail id="10430DF7E14F00BC4C68E7B48A6F5722" type="volume">
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<mods:number id="EDE3F97D0D4A18C8ED38E42BA14442F5">2655</mods:number>
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<mods:classification id="4616381E0A6C2FA29A867FEFDFF1B12E">journal article</mods:classification>
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<mods:identifier id="17DCE3DFCEEB08C09BC58A86D885FE36" type="DOI">10.5281/zenodo.198925</mods:identifier>
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<mods:identifier id="7DBA5BBA7169E7B951BD759690C0ED1E" type="GBIF-Dataset">b168cdce-1f22-42a6-ace6-f5ae1856cde3</mods:identifier>
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<mods:identifier id="B5C4A8E76EB5CC555A402B829EFB1D32" type="ISSN">1175-5326</mods:identifier>
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<mods:identifier id="DE407DC48F7A5C1567997CA32CCB8512" type="Zenodo-Dep">198925</mods:identifier>
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<treatment id="5E0B315DFFD23E0BFF2879092B69F8EC" ID-DOI="http://doi.org/10.5281/zenodo.6204525" ID-GBIF-Taxon="119401934" ID-Zenodo-Dep="6204525" LSID="urn:lsid:zoobank.org:act:D6BDCE4F-B311-482D-ABF7-A5E52BA26E72" httpUri="http://treatment.plazi.org/id/5E0B315DFFD23E0BFF2879092B69F8EC" lastPageId="6" lastPageNumber="7" pageId="3" pageNumber="4">
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<subSubSection id="9EB8D3C0FFD23E0EFF2879092915F8CF" pageId="3" pageNumber="4" type="nomenclature">
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<paragraph id="D61D804BFFD23E0EFF28790929FAF8EC" blockId="3.[151,471,1794,1855]" box="[151,471,1794,1820]" pageId="3" pageNumber="4">
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<heading id="8D553727FFD23E0EFF28790929FAF8EC" bold="true" box="[151,471,1794,1820]" fontSize="11" level="1" pageId="3" pageNumber="4" reason="1">
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<emphasis id="E4D65C59FFD23E0EFF28790929FAF8EC" bold="true" box="[151,471,1794,1820]" pageId="3" pageNumber="4">
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<taxonomicName id="11A2FBC8FFD23E0EFF28790929A0F8EC" ID-CoL="48H5M" box="[151,397,1794,1820]" class="Holothuroidea" family="Cucumariidae" genus="Ocnus" kingdom="Animalia" order="Dendrochirotida" pageId="3" pageNumber="4" phylum="Echinodermata" rank="species" species="paracorbulus" status="sp. nov.">
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<emphasis id="E4D65C59FFD23E0EFF28790929A0F8EC" bold="true" box="[151,397,1794,1820]" italics="true" pageId="3" pageNumber="4">Ocnus paracorbulus</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="FFE5E122FFD23E0EFE2A790929FAF8EC" box="[405,471,1794,1820]" pageId="3" pageNumber="4" rank="species">n. sp.</taxonomicNameLabel>
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</emphasis>
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</heading>
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</paragraph>
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<paragraph id="D61D804BFFD23E0EFF28792E2915F8CF" blockId="3.[151,471,1794,1855]" box="[151,312,1829,1855]" pageId="3" pageNumber="4">
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<figureCitation id="4E999CCEFFD23E0EFF28792E2928F8CF" box="[151,261,1829,1855]" captionStart="FIGURE 2" captionStartId="4.[151,257,1944,1968]" captionTargetBox="[155,1431,202,1911]" captionTargetId="figure@4.[150,1436,197,1919]" captionTargetPageId="4" captionText="FIGURE 2. Ocnus paracorbulus n. sp. Holotype, SAM A 28094. A. Specimen entire, dorsal and ventral surface; B. calcareous ring; C. spiky baskets from the body wall; D. knobbed plates from the body wall; E. oral plates." httpUri="https://zenodo.org/record/198927/files/figure.png" pageId="3" pageNumber="4">Figures 2</figureCitation>
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&
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<figureCitation id="4E999CCEFFD23E0EFE95792E2915F8CF" box="[298,312,1829,1855]" captionStart="FIGURE 3" captionStartId="5.[151,259,1570,1594]" captionTargetBox="[165,1428,200,1541]" captionTargetId="figure@5.[150,1436,185,1557]" captionTargetPageId="5" captionText="FIGURE 3. Ocnus paracorbulus n. sp. Holotype, SAM A 28094. A. Tube feet deposits; B. endplate; C. tentacle deposits." httpUri="https://zenodo.org/record/198928/files/figure.png" pageId="3" pageNumber="4">3</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="9EB8D3C0FFD23E08FF28796429E3F8C2" lastPageId="5" lastPageNumber="6" pageId="3" pageNumber="4" type="diagnosis">
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<paragraph id="D61D804BFFD23E08FF28796429E3F8C2" blockId="3.[151,1437,1903,2004]" lastBlockId="5.[151,1436,1667,2029]" lastPageId="5" lastPageNumber="6" pageId="3" pageNumber="4">
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<emphasis id="E4D65C59FFD23E0EFF2879642937F879" bold="true" box="[151,282,1903,1929]" pageId="3" pageNumber="4">Diagnosis.</emphasis>
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Minute (
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<quantity id="115A2DAEFFD23E0EFE35797B29FBF87A" box="[394,470,1904,1930]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="3" pageNumber="4" unit="mm" value="4.0">4 mm</quantity>
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), barrel-shaped yellowish-white species, currently represented by only juvenile. Mouth covered by scales; tentacles 10, ventral-most two reduced; anal teeth present. Tube feet restricted to ambulacra in single, straight or zigzag rows. Calcareous ring simple. Polian vesicle single. Ossicles of body wall an external layer of baskets and an inner layer of plates. Baskets deep, cup-like, rims variable in form, with pronounced spines, best developed at corners, if rim squarish, or all round; base cross-shaped, spiny. Plates well developed, usually multilocular. Tube feet deposits include curved or straight, smooth perforated rods and plates, with slightly “spined”/knobbed margins. End-plates stellate. Tentacles with mostly smooth, perforated rods and plates.
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</paragraph>
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</subSubSection>
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<caption id="82DDD0C3FFD53E09FF2879932D27F823" httpUri="https://zenodo.org/record/198927/files/figure.png" pageId="4" pageNumber="5" targetBox="[155,1431,202,1911]" targetPageId="4">
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<paragraph id="D61D804BFFD53E09FF2879932D27F823" blockId="4.[151,1436,1944,2003]" pageId="4" pageNumber="5">
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<emphasis id="E4D65C59FFD53E09FF2879932A7CF840" bold="true" box="[151,593,1944,1968]" pageId="4" pageNumber="5">
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FIGURE 2.
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<taxonomicName id="11A2FBC8FFD53E09FE9A79932A26F840" box="[293,523,1944,1968]" class="Holothuroidea" family="Cucumariidae" genus="Ocnus" kingdom="Animalia" order="Dendrochirotida" pageId="4" pageNumber="5" phylum="Echinodermata" rank="species" species="paracorbulus" status="sp. nov.">
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<emphasis id="E4D65C59FFD53E09FE9A79932A26F840" bold="true" box="[293,523,1944,1968]" italics="true" pageId="4" pageNumber="5">Ocnus paracorbulus</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="FFE5E122FFD53E09FDAC79932A7CF840" box="[531,593,1944,1968]" pageId="4" pageNumber="5" rank="species">n. sp.</taxonomicNameLabel>
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</emphasis>
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Holotype, SAM A28094. A. Specimen entire, dorsal and ventral surface; B. calcareous ring; C. spiky baskets from the body wall; D. knobbed plates from the body wall; E. oral plates.
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</paragraph>
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</caption>
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<caption id="82DDD0C3FFD43E08FF28782928D8F9AA" httpUri="https://zenodo.org/record/198928/files/figure.png" pageId="5" pageNumber="6" targetBox="[165,1428,200,1541]" targetPageId="5">
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<paragraph id="D61D804BFFD43E08FF28782928D8F9AA" blockId="5.[151,1436,1570,1626]" pageId="5" pageNumber="6">
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<emphasis id="E4D65C59FFD43E08FF2878292A73F9CA" bold="true" box="[151,606,1570,1594]" pageId="5" pageNumber="6">
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FIGURE 3.
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<taxonomicName id="11A2FBC8FFD43E08FE9778292A3BF9CA" box="[296,534,1570,1594]" class="Holothuroidea" family="Cucumariidae" genus="Ocnus" kingdom="Animalia" order="Dendrochirotida" pageId="5" pageNumber="6" phylum="Echinodermata" rank="species" species="paracorbulus" status="sp. nov.">
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<emphasis id="E4D65C59FFD43E08FE9778292A3BF9CA" bold="true" box="[296,534,1570,1594]" italics="true" pageId="5" pageNumber="6">Ocnus paracorbulus</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="FFE5E122FFD43E08FDA278292A73F9CA" box="[541,606,1570,1594]" pageId="5" pageNumber="6" rank="species">n. sp.</taxonomicNameLabel>
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</emphasis>
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Holotype, SAM A28094. A. Tube feet deposits; B. endplate; C. tentacle deposits.
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</paragraph>
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</caption>
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<subSubSection id="9EB8D3C0FFD43E08FF79793628F4F88D" pageId="5" pageNumber="6" type="etymology">
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<paragraph id="D61D804BFFD43E08FF79793628F4F88D" blockId="5.[151,1436,1667,2029]" pageId="5" pageNumber="6">
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<emphasis id="E4D65C59FFD43E08FF797936297EF8A7" bold="true" box="[198,339,1853,1879]" pageId="5" pageNumber="6">Etymology.</emphasis>
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The species is so named because of its obvious resemblance to
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<taxonomicName id="11A2FBC8FFD43E08FBFC793528F8F88D" authority="Cherbonnier, 1953" authorityName="Cherbonnier" authorityYear="1953" class="Holothuroidea" family="Cucumariidae" genus="Ocnus" kingdom="Animalia" order="Dendrochirotida" pageId="5" pageNumber="6" phylum="Echinodermata" rank="species" species="corbulus">
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<emphasis id="E4D65C59FFD43E08FBFC79352CD1F8A7" box="[1091,1276,1854,1879]" italics="true" pageId="5" pageNumber="6">Ocnus corbulus</emphasis>
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Cherbonnier, 1953
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</taxonomicName>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="9EB8D3C0FFD43E08FF7979832904F81D" pageId="5" pageNumber="6" type="materials_examined">
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<paragraph id="D61D804BFFD43E08FF7979832904F81D" blockId="5.[151,1436,1667,2029]" pageId="5" pageNumber="6">
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<emphasis id="E4D65C59FFD43E08FF7979832996F852" bold="true" box="[198,443,1928,1954]" pageId="5" pageNumber="6">Material examined.</emphasis>
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<typeStatus id="09193EE9FFD43E08FE7C79822A03F852" box="[451,558,1929,1954]" pageId="5" pageNumber="6" type="holotype">
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<emphasis id="E4D65C59FFD43E08FE7C79822A03F852" box="[451,558,1929,1954]" italics="true" pageId="5" pageNumber="6">Holotype</emphasis>
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</typeStatus>
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(? juvenile),
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<collectionCode id="B0B3188EFFD43E08FD7379832B21F852" box="[716,780,1928,1954]" httpUri="http://grbio.org/cool/mhew-9czz" name="South African Museum" pageId="5" pageNumber="6">SAM</collectionCode>
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A28094, Kunene, stn. BE17, Hole 1,
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<collectingCountry id="AEB5C0DBFFD43E08FB7179832D1EF852" box="[1230,1331,1928,1954]" name="Namibia" pageId="5" pageNumber="6">Namibia</collectingCountry>
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17. 316º S,
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<geoCoordinate id="B396E68CFFD43E08FF0679A6291BF837" box="[185,310,1965,1991]" direction="east" orientation="longitude" pageId="5" pageNumber="6" precision="55" value="11.723">11.723º E</geoCoordinate>
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,
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<date id="A21CA68BFFD43E08FEFC79A62992F837" box="[323,447,1965,1991]" pageId="5" pageNumber="6" value="2008-03-05">5.iii.2008</date>
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, 26 m, Zettler;
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<typeStatus id="09193EE9FFD43E08FD3D79A52AD2F837" box="[642,767,1966,1991]" pageId="5" pageNumber="6" type="paratype">
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<emphasis id="E4D65C59FFD43E08FD3D79A52AD2F837" box="[642,767,1966,1991]" italics="true" pageId="5" pageNumber="6">Paratypes</emphasis>
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</typeStatus>
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,
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<collectionCode id="B0B3188EFFD43E08FCAF79A62B7FF837" box="[784,850,1965,1991]" httpUri="http://grbio.org/cool/mhew-9czz" name="South African Museum" pageId="5" pageNumber="6">SAM</collectionCode>
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A28095, same data as
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<typeStatus id="09193EE9FFD43E08FBC979A62CCBF837" box="[1142,1254,1965,1991]" pageId="5" pageNumber="6" type="holotype">holotype</typeStatus>
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,
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<specimenCount id="C0A44BC2FFD43E08FB4B79A62DB1F837" box="[1268,1436,1965,1991]" pageId="5" pageNumber="6" type="generic">16 specimens</specimenCount>
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(?juveniles).
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</paragraph>
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</subSubSection>
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<subSubSection id="9EB8D3C0FFD73E0BFF797E9C2928FB52" pageId="6" pageNumber="7" type="description">
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<paragraph id="D61D804BFFD73E0BFF797E9C2957FE62" blockId="6.[151,1437,151,1820]" pageId="6" pageNumber="7">
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<emphasis id="E4D65C59FFD73E0BFF797E9C29DDFF41" bold="true" box="[198,496,151,177]" pageId="6" pageNumber="7">
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Description of
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<typeStatus id="09193EE9FFD73E0BFEC27E9C29C6FF41" box="[381,491,151,177]" pageId="6" pageNumber="7" type="holotype">holotype</typeStatus>
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.
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</emphasis>
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Specimen minute,
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<quantity id="115A2DAEFFD73E0BFD6F7E932B39FF42" box="[720,788,152,178]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="6" pageNumber="7" unit="mm" value="4.0">4 mm</quantity>
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long,
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<quantity id="115A2DAEFFD73E0BFCE27E932B8DFF42" box="[861,928,152,178]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="6" pageNumber="7" unit="mm" value="2.0">2 mm</quantity>
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wide in mid-body. Colour yellowish white; body barrel-shaped (
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<figureCitation id="4E999CCEFFD73E0BFE267EB62A2BFF27" box="[409,518,189,215]" captionStart="FIGURE 2" captionStartId="4.[151,257,1944,1968]" captionTargetBox="[155,1431,202,1911]" captionTargetId="figure@4.[150,1436,197,1919]" captionTargetPageId="4" captionText="FIGURE 2. Ocnus paracorbulus n. sp. Holotype, SAM A 28094. A. Specimen entire, dorsal and ventral surface; B. calcareous ring; C. spiky baskets from the body wall; D. knobbed plates from the body wall; E. oral plates." httpUri="https://zenodo.org/record/198927/files/figure.png" pageId="6" pageNumber="7">Figure 2</figureCitation>
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A). Mouth and anus terminal; the former covered by scales; tentacles 10, retracted, well-branched, ventral-most two reduced; anal teeth minute. Tube feet restricted to the ambulacra in single rows, better developed ventrally where they appear in a single zigzag row on the mid-ventral ambulacrum and in single straight rows in the other two ventral ambulacra, reduced dorsally in two single rows. Suckers well developed, diameter slightly larger than that of the tube foot. Body wall opaque, thin, soft, filled with ossicles.
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</paragraph>
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<paragraph id="D61D804BFFD73E0BFF797F962DA8FDBC" blockId="6.[151,1437,151,1820]" pageId="6" pageNumber="7">
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Calcareous ring (
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<figureCitation id="4E999CCEFFD73E0BFE2B7F9629D1FE47" box="[404,508,413,439]" captionStart="FIGURE 2" captionStartId="4.[151,257,1944,1968]" captionTargetBox="[155,1431,202,1911]" captionTargetId="figure@4.[150,1436,197,1919]" captionTargetPageId="4" captionText="FIGURE 2. Ocnus paracorbulus n. sp. Holotype, SAM A 28094. A. Specimen entire, dorsal and ventral surface; B. calcareous ring; C. spiky baskets from the body wall; D. knobbed plates from the body wall; E. oral plates." httpUri="https://zenodo.org/record/198927/files/figure.png" pageId="6" pageNumber="7">Figure 2</figureCitation>
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B) delicate, simple, typically cucumariid, radial plates anteriorly bifid with a medial depression for attachment of retractor muscle; interradial plates triangular; posterior margin of ring undulating. Polian vesicle single, large, sac-like; stone canal short, straight, madreporite apparently beanshaped. Longitudinal muscles as single strands, retractors arise anteriorly. Gonad absent. Respiratory trees branched, right one longer, left one more branched, but restricted to posterior half of body. Cloaca elongate.
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</paragraph>
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<paragraph id="D61D804BFFD73E0BFF797C532D2FFBC2" blockId="6.[151,1437,151,1820]" pageId="6" pageNumber="7">
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Ossicles of the body wall comprise an external layer of baskets and an internal layer of plates. Baskets (
|
||
<figureCitation id="4E999CCEFFD73E0BFF207C762929FD67" box="[159,260,637,663]" captionStart="FIGURE 2" captionStartId="4.[151,257,1944,1968]" captionTargetBox="[155,1431,202,1911]" captionTargetId="figure@4.[150,1436,197,1919]" captionTargetPageId="4" captionText="FIGURE 2. Ocnus paracorbulus n. sp. Holotype, SAM A 28094. A. Specimen entire, dorsal and ventral surface; B. calcareous ring; C. spiky baskets from the body wall; D. knobbed plates from the body wall; E. oral plates." httpUri="https://zenodo.org/record/198927/files/figure.png" pageId="6" pageNumber="7">Figure 2</figureCitation>
|
||
C) well developed, deep, cup-like with an oval, circular or squarish rim with well developed spines, mostly at corners of the rim if rim squarish, in others equally well developed but all around the rim (24.5–39 µm, mean 31.35µm, ± 4.46, n = 10). Base of basket typically cross-shaped with spines distributed medially and at ends of cross. Plates (
|
||
<figureCitation id="4E999CCEFFD73E0BFE4F7CE62A75FCF7" box="[496,600,749,775]" captionStart="FIGURE 2" captionStartId="4.[151,257,1944,1968]" captionTargetBox="[155,1431,202,1911]" captionTargetId="figure@4.[150,1436,197,1919]" captionTargetPageId="4" captionText="FIGURE 2. Ocnus paracorbulus n. sp. Holotype, SAM A 28094. A. Specimen entire, dorsal and ventral surface; B. calcareous ring; C. spiky baskets from the body wall; D. knobbed plates from the body wall; E. oral plates." httpUri="https://zenodo.org/record/198927/files/figure.png" pageId="6" pageNumber="7">Figure 2</figureCitation>
|
||
D) exceptionally well developed (98.5–207.5 µm, mean 155.1 µm, ± 30.67, n = 10), multilocular, finely knobbed around margins and on surface, margins uneven, some plates with fewer holes (four or more), but these are perhaps developing large plates. Tube feet deposits (
|
||
<figureCitation id="4E999CCEFFD73E0BFAAB7D332D56FCA2" box="[1300,1403,824,850]" captionStart="FIGURE 3" captionStartId="5.[151,259,1570,1594]" captionTargetBox="[165,1428,200,1541]" captionTargetId="figure@5.[150,1436,185,1557]" captionTargetPageId="5" captionText="FIGURE 3. Ocnus paracorbulus n. sp. Holotype, SAM A 28094. A. Tube feet deposits; B. endplate; C. tentacle deposits." httpUri="https://zenodo.org/record/198928/files/figure.png" pageId="6" pageNumber="7">Figure 3</figureCitation>
|
||
A) include curved or straight, smooth perforated rods and plates, with uneven slightly “spined” margins, the latter more prominent in the wider part of the ossicle (83–118.5 µm, mean 93.8 µm, ± 9.95, n = 10). Suckers supported by stellate end-plates (
|
||
<figureCitation id="4E999CCEFFD73E0BFDA57DA32A53FC32" box="[538,638,936,962]" captionStart="FIGURE 3" captionStartId="5.[151,259,1570,1594]" captionTargetBox="[165,1428,200,1541]" captionTargetId="figure@5.[150,1436,185,1557]" captionTargetPageId="5" captionText="FIGURE 3. Ocnus paracorbulus n. sp. Holotype, SAM A 28094. A. Tube feet deposits; B. endplate; C. tentacle deposits." httpUri="https://zenodo.org/record/198928/files/figure.png" pageId="6" pageNumber="7">Figure 3</figureCitation>
|
||
B) bearing relatively few perforations. Mouth surrounded by larger, elongated plates (up to 320 µm) with knobs usually developed at one end which is also narrowed and slightly spinous (
|
||
<figureCitation id="4E999CCEFFD73E0BFF407DF92949FBFC" box="[255,356,1010,1036]" captionStart="FIGURE 2" captionStartId="4.[151,257,1944,1968]" captionTargetBox="[155,1431,202,1911]" captionTargetId="figure@4.[150,1436,197,1919]" captionTargetPageId="4" captionText="FIGURE 2. Ocnus paracorbulus n. sp. Holotype, SAM A 28094. A. Specimen entire, dorsal and ventral surface; B. calcareous ring; C. spiky baskets from the body wall; D. knobbed plates from the body wall; E. oral plates." httpUri="https://zenodo.org/record/198927/files/figure.png" pageId="6" pageNumber="7">Figure 2</figureCitation>
|
||
E). Anal region with smooth, perforated plates with marginal knobs or spines. Tentacles with mostly smooth, perforated rods and plates (up to 64 µm) (
|
||
<figureCitation id="4E999CCEFFD73E0BFC847A132B8DFBC2" box="[827,928,1048,1074]" captionStart="FIGURE 3" captionStartId="5.[151,259,1570,1594]" captionTargetBox="[165,1428,200,1541]" captionTargetId="figure@5.[150,1436,185,1557]" captionTargetPageId="5" captionText="FIGURE 3. Ocnus paracorbulus n. sp. Holotype, SAM A 28094. A. Tube feet deposits; B. endplate; C. tentacle deposits." httpUri="https://zenodo.org/record/198928/files/figure.png" pageId="6" pageNumber="7">Figure 3</figureCitation>
|
||
C). Introvert without deposits.
|
||
</paragraph>
|
||
<paragraph id="D61D804BFFD73E0BFF797A362928FB52" blockId="6.[151,1437,151,1820]" pageId="6" pageNumber="7">
|
||
<emphasis id="E4D65C59FFD73E0BFF797A362A2FFBA7" bold="true" box="[198,514,1085,1111]" pageId="6" pageNumber="7">
|
||
Description of
|
||
<typeStatus id="09193EE9FFD73E0BFE3F7A3629D3FBA7" box="[384,510,1085,1111]" pageId="6" pageNumber="7" type="paratype">paratypes</typeStatus>
|
||
.
|
||
</emphasis>
|
||
<quantity id="115A2DAEFFD73E0BFDB47A362A40FBA7" box="[523,621,1085,1111]" metricMagnitude="-3" metricUnit="m" metricValue="2.5" metricValueMax="4.0" metricValueMin="1.0" pageId="6" pageNumber="7" unit="mm" value="2.5" valueMax="4.0" valueMin="1.0">1–4 mm</quantity>
|
||
long, barrel-shaped, smaller specimens almost rounded. Tube feet as in
|
||
<typeStatus id="09193EE9FFD73E0BFF097A692932FB8C" box="[182,287,1122,1148]" pageId="6" pageNumber="7" type="holotype">holotype</typeStatus>
|
||
but in some well extended and fairly elongated, reaching about
|
||
<quantity id="115A2DAEFFD73E0BFB957A692C42FB8C" box="[1066,1135,1122,1148]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="6" pageNumber="7" unit="mm" value="1.0">1 mm</quantity>
|
||
in length. Deposits as in
|
||
<typeStatus id="09193EE9FFD73E0BFF287A83292FFB52" box="[151,258,1160,1186]" pageId="6" pageNumber="7" type="holotype">holotype</typeStatus>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="9EB8D3C0FFD73E0BFF797AA62BE7FB1C" pageId="6" pageNumber="7" type="distribution">
|
||
<paragraph id="D61D804BFFD73E0BFF797AA62ABFFB37" blockId="6.[151,1437,151,1820]" box="[198,658,1197,1223]" pageId="6" pageNumber="7">
|
||
<emphasis id="E4D65C59FFD73E0BFF797AA6294AFB37" bold="true" box="[198,359,1197,1223]" pageId="6" pageNumber="7">Distribution.</emphasis>
|
||
<typeStatus id="09193EE9FFD73E0BFED17AA62985FB37" box="[366,424,1197,1223]" pageId="6" pageNumber="7">Type</typeStatus>
|
||
locality only,
|
||
<specimenCount id="C0A44BC2FFD73E0BFDF07AA62ABFFB37" box="[591,658,1197,1223]" pageId="6" pageNumber="7" type="generic">
|
||
<quantity id="115A2DAEFFD73E0BFDF07AA62AA3FB37" box="[591,654,1197,1223]" metricMagnitude="1" metricUnit="m" metricValue="2.6" pageId="6" pageNumber="7" unit="m" value="26.0">26 m</quantity>
|
||
.
|
||
</specimenCount>
|
||
</paragraph>
|
||
<paragraph id="D61D804BFFD73E0BFF797AD92BE7FB1C" blockId="6.[151,1437,151,1820]" box="[198,970,1234,1260]" pageId="6" pageNumber="7">
|
||
<emphasis id="E4D65C59FFD73E0BFF797AD92903FB1C" bold="true" box="[198,302,1234,1260]" pageId="6" pageNumber="7">Habitat.</emphasis>
|
||
Shells of brachiopod
|
||
<taxonomicName id="11A2FBC8FFD73E0BFD907AD82BEBFB1C" authority="Sowerby, 1847" authorityName="Sowerby" authorityYear="1847" box="[559,966,1234,1260]" class="Lingulata" family="Discinidae" genus="Discinisca" kingdom="Animalia" order="Lingulida" pageId="6" pageNumber="7" phylum="Brachiopoda" rank="species" species="tenuis">
|
||
<emphasis id="E4D65C59FFD73E0BFD907AD82AD5FB1C" box="[559,760,1235,1260]" italics="true" pageId="6" pageNumber="7">Discinisca tenuis</emphasis>
|
||
(Sowerby, 1847)
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="9EB8D3C0FFD73E0BFF797AFC2B69F8EC" pageId="6" pageNumber="7" type="discussion">
|
||
<paragraph id="D61D804BFFD73E0BFF797AFC2B69F8EC" blockId="6.[151,1437,151,1820]" pageId="6" pageNumber="7">
|
||
<emphasis id="E4D65C59FFD73E0BFF797AFC2912FAE1" bold="true" box="[198,319,1271,1297]" pageId="6" pageNumber="7">Remarks.</emphasis>
|
||
Since the
|
||
<typeStatus id="09193EE9FFD73E0BFE047AF32A09FAE2" box="[443,548,1272,1298]" pageId="6" pageNumber="7" type="holotype">holotype</typeStatus>
|
||
, the largest specimen in the series, lacks a gonad, it is obviously a juvenile. Hence, it is concluded that the entire material is juvenile. Despite this, a full complement of ossicles appears to be present and therefore the entire material is here treated as representing a new species. Since baskets of the form here described, in combination with the knobbed plates and the absence of button-like deposits, do not occur in any nominal species of
|
||
<taxonomicName id="11A2FBC8FFD73E0BFDEB7B862A8CFA56" box="[596,673,1421,1446]" class="Holothuroidea" family="Cucumariidae" genus="Ocnus" kingdom="Animalia" order="Dendrochirotida" pageId="6" pageNumber="7" phylum="Echinodermata" rank="genus">
|
||
<emphasis id="E4D65C59FFD73E0BFDEB7B862A8CFA56" box="[596,673,1421,1446]" italics="true" pageId="6" pageNumber="7">Ocnus</emphasis>
|
||
</taxonomicName>
|
||
, it is highly likely that the material may be referable to a new genus, but lack of adults prevents this action. It is noteworthy that the pedicel end-plates are typically of the
|
||
<taxonomicName id="11A2FBC8FFD73E0BFF287BD328C9FA01" box="[151,228,1496,1521]" class="Holothuroidea" family="Cucumariidae" genus="Ocnus" kingdom="Animalia" order="Dendrochirotida" pageId="6" pageNumber="7" phylum="Echinodermata" rank="genus">
|
||
<emphasis id="E4D65C59FFD73E0BFF287BD328C9FA01" box="[151,228,1496,1521]" italics="true" pageId="6" pageNumber="7">Ocnus</emphasis>
|
||
</taxonomicName>
|
||
<typeStatus id="09193EE9FFD73E0BFF537BD3290DFA02" box="[236,288,1496,1522]" pageId="6" pageNumber="7">type</typeStatus>
|
||
and the baskets bear a close resemblance to those described for
|
||
<taxonomicName id="11A2FBC8FFD73E0BFB907BD328F6F9E7" authority="Cherbonnier, 1953" authorityName="Cherbonnier" authorityYear="1953" class="Holothuroidea" family="Cucumariidae" genus="Ocnus" kingdom="Animalia" order="Dendrochirotida" pageId="6" pageNumber="7" phylum="Echinodermata" rank="species" species="corbulus">
|
||
<emphasis id="E4D65C59FFD73E0BFB907BD32CC0FA01" box="[1071,1261,1496,1521]" italics="true" pageId="6" pageNumber="7">Ocnus corbulus</emphasis>
|
||
(Cherbonnier, 1953)
|
||
</taxonomicName>
|
||
from False Bay,
|
||
<collectingCountry id="AEB5C0DBFFD73E0BFE1C7BF62A13F9E7" box="[419,574,1533,1559]" name="South Africa" pageId="6" pageNumber="7">South Africa</collectingCountry>
|
||
. However, the latter species, described from a
|
||
<quantity id="115A2DAEFFD73E0BFBE07BF62C9CF9E7" box="[1119,1201,1533,1559]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="6" pageNumber="7" unit="mm" value="10.0">10 mm</quantity>
|
||
adult, has two rows of tube feet per ambulacrum, end-plates are absent and in addition to the huge plates which resemble those of the current material, there are other knobbed plates with one end spinous/denticulate, with the spines borne on a short handle. Such plates are of the ‘
|
||
<taxonomicName id="11A2FBC8FFD73E0BFDDF78662B4AF976" box="[608,871,1645,1670]" class="Holothuroidea" family="Cucumariidae" genus="Pseudocnella" kingdom="Animalia" order="Dendrochirotida" pageId="6" pageNumber="7" phylum="Echinodermata" rank="species" species="insolens">
|
||
<emphasis id="E4D65C59FFD73E0BFDDF78662B4AF976" box="[608,871,1645,1670]" italics="true" pageId="6" pageNumber="7">Pseudocnella insolens</emphasis>
|
||
</taxonomicName>
|
||
’
|
||
<typeStatus id="09193EE9FFD73E0BFCC678662B81F977" box="[889,940,1645,1671]" pageId="6" pageNumber="7">type</typeStatus>
|
||
and are absent in the new species, except for a few very large ones at the oral end. The possibility therefore exists that such plates and the multiplication of tube feet may be a later development and the new species may turn out to be juvenile of
|
||
<taxonomicName id="11A2FBC8FFD73E0BFB0478B32D68F921" box="[1211,1349,1720,1745]" class="Holothuroidea" family="Cucumariidae" genus="Ocnus" kingdom="Animalia" order="Dendrochirotida" pageId="6" pageNumber="7" phylum="Echinodermata" rank="species" species="corbulus">
|
||
<emphasis id="E4D65C59FFD73E0BFB0478B32D68F921" box="[1211,1349,1720,1745]" italics="true" pageId="6" pageNumber="7">
|
||
<collectingCountry id="AEB5C0DBFFD73E0BFB0478B32CFEF921" box="[1211,1235,1720,1745]" name="Iceland" pageId="6" pageNumber="7">O</collectingCountry>
|
||
. corbulus
|
||
</emphasis>
|
||
</taxonomicName>
|
||
but the lack of any intermediates prevents this conclusion. A critical look at all related genera of
|
||
<taxonomicName id="11A2FBC8FFD73E0BFB0878D62D2FF906" box="[1207,1282,1757,1782]" class="Holothuroidea" family="Cucumariidae" genus="Ocnus" kingdom="Animalia" order="Dendrochirotida" pageId="6" pageNumber="7" phylum="Echinodermata" rank="genus">
|
||
<emphasis id="E4D65C59FFD73E0BFB0878D62D2FF906" box="[1207,1282,1757,1782]" italics="true" pageId="6" pageNumber="7">Ocnus</emphasis>
|
||
</taxonomicName>
|
||
excludes the possibility of referring the current material to any of them.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |