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<document id="D1E053179B4BA162988DEAD654BD58AF" ID-DOI="10.11646/zootaxa.1697.1.1" ID-ISSN="1175­5334" ID-Zenodo-Dep="5107079" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1626378524067" checkinUser="felipe" docAuthor="Thandar, Ahmed S." docDate="2008" docId="DE2087C7F5328753A0ADF1BE92CE5DCA" docLanguage="en" docName="zt01697p057.pdf" docOrigin="Zootaxa 1697 (1)" docSource="https://biotaxa.org/Zootaxa/article/view/zootaxa.1697.1.1" docStyle="DocumentStyle:6581673A57F01A3145754A1E615EDFF0.4:Zootaxa.2007-2008.journal_article" docStyleId="6581673A57F01A3145754A1E615EDFF0" docStyleName="Zootaxa.2007-2008.journal_article" docStyleVersion="4" docTitle="Ocnus rowei Thandar 2008, sp. nov." docType="treatment" docVersion="3" lastPageNumber="21" masterDocId="2219FFBFF5208746A03AF42E93345C38" masterDocTitle="Additions to the holothuroid fauna of the southern African temperate faunistic provinces, with descriptions of new species" masterLastPageNumber="57" masterPageNumber="1" pageNumber="19" updateTime="1699010251044" updateUser="plazi" zenodo-license-document="CLOSED">
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<mods:title id="7132F3F92614442AE9AE6A31BA8C5AC9">Additions to the holothuroid fauna of the southern African temperate faunistic provinces, with descriptions of new species</mods:title>
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<mods:namePart id="9153092ECD5F8CEB2E971C5F0B5769A4">Thandar, Ahmed S.</mods:namePart>
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<mods:date id="8D754DB47C9A181C130C03A40DA7CAB6">2008</mods:date>
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<mods:identifier id="E7618F89E281F9CD36AC0CC78B99BEDE" type="ISSN">1175­5334</mods:identifier>
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<treatment id="DE2087C7F5328753A0ADF1BE92CE5DCA" ID-DOI="http://doi.org/10.5281/zenodo.5107117" ID-Zenodo-Dep="5107117" LSID="urn:lsid:plazi:treatment:DE2087C7F5328753A0ADF1BE92CE5DCA" httpUri="http://treatment.plazi.org/id/DE2087C7F5328753A0ADF1BE92CE5DCA" lastPageId="21" lastPageNumber="21" pageId="18" pageNumber="19">
<subSubSection id="1E93655AF5328754A0ADF1BE92A05992" box="[151,404,1424,1450]" pageId="18" pageNumber="19" type="nomenclature">
<paragraph id="563636D1F5328754A0ADF1BE92A05992" blockId="18.[151,404,1424,1485]" box="[151,404,1424,1450]" pageId="18" pageNumber="19">
<heading id="0D7E81BDF5328754A0ADF1BE92A05992" bold="true" box="[151,404,1424,1450]" fontSize="11" level="1" pageId="18" pageNumber="19" reason="1">
<emphasis id="64FDEAC3F5328754A0ADF1BE92A05992" bold="true" box="[151,404,1424,1450]" pageId="18" pageNumber="19">
<taxonomicName id="91894D52F5328754A0ADF1BE921B5992" ID-CoL="48H5S" authority="Thandar, 2008" authorityName="Thandar" authorityYear="2008" box="[151,303,1424,1450]" class="Holothuroidea" family="Cucumariidae" genus="Ocnus" kingdom="Animalia" order="Dendrochirotida" pageId="18" pageNumber="19" phylum="Echinodermata" rank="species" species="rowei" status="sp. nov.">
<emphasis id="64FDEAC3F5328754A0ADF1BE921B5992" bold="true" box="[151,303,1424,1450]" italics="true" pageId="18" pageNumber="19">Ocnus rowei</emphasis>
</taxonomicName>
<taxonomicNameLabel id="7FCE57B8F5328754A10CF1BE92A05992" box="[310,404,1424,1450]" pageId="18" pageNumber="19" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="1E93655AF5328753A0ADF19D92CE5DCA" lastPageId="21" lastPageNumber="22" pageId="18" pageNumber="19" type="description">
<paragraph id="563636D1F5328754A0ADF19D93CE59F5" blockId="18.[151,404,1424,1485]" box="[151,250,1459,1485]" pageId="18" pageNumber="19">
<figureCitation id="CEB22A54F5328754A0ADF19D93CE59F5" box="[151,250,1459,1485]" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="18" pageNumber="19">Figure 8</figureCitation>
</paragraph>
<paragraph id="563636D1F5328754A0ADF22D92385A25" blockId="18.[151,1436,1539,1885]" box="[151,268,1539,1565]" pageId="18" pageNumber="19">Diagnosis</paragraph>
<paragraph id="563636D1F5328754A086F20592375B65" blockId="18.[151,1436,1539,1885]" pageId="18" pageNumber="19">
A somewhat U-shaped species, up to
<quantity id="91719B34F5328754A24EF20591F15A7D" box="[628,709,1579,1605]" metricMagnitude="-2" metricUnit="m" metricValue="2.0" pageId="18" pageNumber="19" unit="mm" value="20.0">20 mm</quantity>
in length. Tentacles 10, ventral-most two reduced. Podia usually rigid, in double rows, interambulacra mostly naked. Body wall rigid, thin (&lt;
<quantity id="91719B34F5328754A467F27D97915A55" box="[1117,1189,1619,1645]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="18" pageNumber="19" unit="mm" value="1.0">1 mm</quantity>
). Body wall spicules comprise baskets, knobbed buttons/plates and large lenticular plates/spheres. Baskets spinose, of
<specimenCount id="408FFD58F5328754A517F25596A35AAD" box="[1325,1431,1659,1685]" pageId="18" pageNumber="19" type="generic" typeStatus="type">one type</specimenCount>
, minute,
<quantity id="91719B34F5328754A0CDF28D925F5A85" box="[247,363,1699,1725]" metricMagnitude="-2" metricUnit="m" metricValue="1.6" metricValueMax="2.1" metricValueMin="1.1" pageId="18" pageNumber="19" unit="mm" value="16.0" valueMax="21.0" valueMin="11.0">11-21 µm</quantity>
, flat, usually quadrilocular. Buttons
<quantity id="91719B34F5328754A32EF28D90BD5A85" box="[788,905,1699,1725]" metricMagnitude="-2" metricUnit="m" metricValue="5.8" metricValueMax="7.6" metricValueMin="4.0" pageId="18" pageNumber="19" unit="mm" value="58.0" valueMax="76.0" valueMin="40.0">40-76 µm</quantity>
, usually with large (&gt;
<quantity id="91719B34F5328754A4B2F28D97E15A85" box="[1160,1237,1699,1725]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" pageId="18" pageNumber="19" unit="mm" value="15.0">15 µm</quantity>
) knobs but some smaller ones with smaller knobs (&lt;
<quantity id="91719B34F5328754A20BF2E591B45ADD" box="[561,640,1739,1765]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" pageId="18" pageNumber="19" unit="mm" value="15.0">15 µm</quantity>
). Lenticular plates/spheres large,
<quantity id="91719B34F5328754A43DF2E597AE5ADD" box="[1031,1178,1739,1765]" metricMagnitude="-1" metricUnit="m" metricValue="2.8" metricValueMax="3.7" metricValueMin="1.9" pageId="18" pageNumber="19" unit="mm" value="280.0" valueMax="370.0" valueMin="190.0">190-370 µm</quantity>
, knobbed, made up of several layers of calcareous material. Podial deposits include baskets, knobbed plates, rods and end-plates. Tentacle stalks with perforated rods, branches with multilocular plates. Introvert with large-knobbed plates and rods.
</paragraph>
<paragraph id="563636D1F5338755A0ADF4B6922D5C8A" blockId="19.[151,1435,152,258]" box="[151,281,152,178]" pageId="19" pageNumber="20">Etymology</paragraph>
<paragraph id="563636D1F5338755A086F4EE92FB5D3A" blockId="19.[151,1435,152,258]" pageId="19" pageNumber="20">This species is named in honour of Dr Francis W. Rowe in recognition of his excellent contributions to the taxonomy of holothuroids.</paragraph>
<caption id="02F66659F5338755A0ADF34796B25BCA" ID-DOI="http://doi.org/10.5281/zenodo.5107105" ID-Zenodo-Dep="5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="19" pageNumber="20" startId="19.[151,255,1897,1921]" targetBox="[175,1408,318,1878]" targetPageId="19">
<paragraph id="563636D1F5338755A0ADF34796B25BCA" blockId="19.[151,1436,1897,2034]" pageId="19" pageNumber="20">
<emphasis id="64FDEAC3F5338755A0ADF347922D5BB9" bold="true" box="[151,281,1897,1921]" pageId="19" pageNumber="20">FIGURE 8.</emphasis>
<taxonomicName id="91894D52F5338755A125F34492915BB9" authority="Thandar, 2008" authorityName="Thandar" authorityYear="2008" box="[287,421,1898,1921]" class="Holothuroidea" family="Cucumariidae" genus="Ocnus" kingdom="Animalia" order="Dendrochirotida" pageId="19" pageNumber="20" phylum="Echinodermata" rank="species" species="rowei" status="sp. nov.">
<emphasis id="64FDEAC3F5338755A125F34492915BB9" box="[287,421,1898,1921]" italics="true" pageId="19" pageNumber="20">Ocnus rowei</emphasis>
</taxonomicName>
<taxonomicNameLabel id="7FCE57B8F5338755A191F34792C95BB8" box="[427,509,1897,1920]" pageId="19" pageNumber="20" rank="species">sp. nov.</taxonomicNameLabel>
Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c.
</paragraph>
</caption>
<paragraph id="563636D1F5348752A0ADF4B692475C8A" blockId="20.[151,1436,152,260]" box="[151,371,152,178]" pageId="20" pageNumber="21">Material examined</paragraph>
<paragraph id="563636D1F5348752A086F4ED900B5D3C" blockId="20.[151,1436,152,260]" pageId="20" pageNumber="21">
<materialsCitation id="E6E13C8CF5348752A086F4ED900B5D3C" collectingDate="1961-10-27" collectionCode="UCT" latitude="-34.233334" location="False Bay" longLatPrecision="1200" longitude="18.5" pageId="20" pageNumber="21" specimenCode="FAL 493" specimenCount="14" typeStatus="holotype">
<emphasis id="64FDEAC3F5348752A086F4ED92055CE4" box="[188,305,195,220]" italics="true" pageId="20" pageNumber="21">
<typeStatus id="89328873F5348752A086F4ED921F5CE4" box="[188,299,195,220]" pageId="20" pageNumber="21" type="holotype">Holotype</typeStatus>
:
</emphasis>
SAM-A 27991,
<collectionCode id="3098AE14F5348752A1CCF4EC91045CE4" box="[502,560,194,220]" pageId="20" pageNumber="21">UCT</collectionCode>
Ecol. Surv.,
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, St.
<specimenCode id="062F9EAAF5348752A34AF4EC90EE5CE4" box="[880,986,194,220]" collectionCode="FAL" pageId="20" pageNumber="21">FAL 493</specimenCode>
,
<geoCoordinate id="33BD5016F5348752A3DDF4EC97645CE4" box="[999,1104,192,220]" degrees="34" direction="south" minutes="14" orientation="latitude" pageId="20" pageNumber="21" precision="925" value="-34.233334">
34
<superScript id="A1FC9B99F5348752A43EF4EE97385CF6" attach="left" box="[1028,1036,192,206]" fontSize="6" pageId="20" pageNumber="21">o</superScript>
14' S
</geoCoordinate>
,
<geoCoordinate id="33BD5016F5348752A467F4EC97FC5CE4" box="[1117,1224,192,220]" degrees="18" direction="east" minutes="30" orientation="longitude" pageId="20" pageNumber="21" precision="925" value="18.5">
18
<superScript id="A1FC9B99F5348752A440F4EE97B65CF6" attach="left" box="[1146,1154,192,206]" fontSize="6" pageId="20" pageNumber="21">o</superScript>
30' E
</geoCoordinate>
,
<date id="22371011F5348752A4EEF4EC96785CE4" box="[1236,1356,194,220]" pageId="20" pageNumber="21" value="1961-10-27">
<collectingDate id="3273E9F9F5348752A4EEF4EC96785CE4" box="[1236,1356,194,220]" pageId="20" pageNumber="21" value="1961-10-27">
27.x.
<quantity id="91719B34F5348752A537F4EC96785CE4" box="[1293,1356,194,220]" metricMagnitude="3" metricUnit="m" metricValue="1.96142" pageId="20" pageNumber="21" unit="m" value="1961.42">1961</quantity>
</collectingDate>
</date>
, 42 m;
<emphasis id="64FDEAC3F5348752A0ADF4C592255D3C" box="[151,273,235,260]" italics="true" pageId="20" pageNumber="21">
<typeStatus id="89328873F5348752A0ADF4C592395D3C" box="[151,269,235,260]" pageId="20" pageNumber="21" type="paratype">paratypes</typeStatus>
,
</emphasis>
SAM-A27992, same data as holotype,
<specimenCount id="408FFD58F5348752A2E5F4C4900B5D3C" box="[735,831,234,260]" pageId="20" pageNumber="21" type="generic">14 spec.</specimenCount>
</materialsCitation>
</paragraph>
<paragraph id="563636D1F5348752A0ADF51492995D6C" blockId="20.[151,1436,314,1420]" box="[151,429,314,340]" pageId="20" pageNumber="21">
Description of
<typeStatus id="89328873F5348752A17CF51492995D6C" box="[326,429,314,340]" pageId="20" pageNumber="21" type="holotype">holotype</typeStatus>
</paragraph>
<paragraph id="563636D1F5348752A0FEF54C97C15E7C" blockId="20.[151,1436,314,1420]" pageId="20" pageNumber="21">
Body somewhat U-shaped, length along ventral surface
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, width in mid-body
<quantity id="91719B34F5348752A491F54C97C65D44" box="[1195,1266,354,380]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="20" pageNumber="21" unit="mm" value="3.0">3 mm</quantity>
, posterior end narrower, directed upwards, ventral surface not sole-like. Tentacles retracted, eight large, ventral-most two reduced. Podia well extended, rigid, restricted to ambulacra in double rows, larger ventrally, one or two also scattered in interambulacra but these are mostly naked. Anus encircled by papillae, teeth not detected. Colour, in alcohol, including tentacles and podia, uniform off-white. Body wall rigid, thin (&lt;
<quantity id="91719B34F5348752A4A8F62C97EC5E24" box="[1170,1240,514,540]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="20" pageNumber="21" unit="mm" value="1.0">1 mm</quantity>
), ambulacra and interambulacra pitted, pits not indicative of presence of papillae/papulae which are both absent.
</paragraph>
<paragraph id="563636D1F5348752A0FAF67C97195F64" blockId="20.[151,1436,314,1420]" pageId="20" pageNumber="21">
Radial plates of calcareous ring (
<figureCitation id="CEB22A54F5348752A27FF67C91F55E54" box="[581,705,594,620]" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="20" pageNumber="21">Figure 8K</figureCitation>
) truncate, slightly longer than interradial plates, with an anterior depression for retractor muscle, posterior surface slightly concave; interradial plates triangular, anteriorly bifid with medial depression, posterior surface deeply concave. Polian vesicle single, elongate; stone canal short, lodged in dorsal mesentery, madreporite bean-shaped (
<figureCitation id="CEB22A54F5348752A3B0F6E4973E5EDC" box="[906,1034,714,740]" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="20" pageNumber="21">Figure 8L</figureCitation>
). Gonad well developed, almost mature, comprising elongate, unbranched tubules, filling much of body cavity. Respiratory trees well branched, short, right one reaching only mid-body, left one much shorter. Longitudinal muscles faint, retractors originating in anterior third of body, more anteriorly in ventral ambulacra.
</paragraph>
<paragraph id="563636D1F5348752A0F7F74491EB59B4" blockId="20.[151,1436,314,1420]" pageId="20" pageNumber="21">
Spicules of body wall comprise baskets, knobbed buttons/plates and large, knobbed, lenticular plates/ spheres. Baskets (
<figureCitation id="CEB22A54F5348752A156F7BC92D25F94" box="[364,486,914,940]" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="20" pageNumber="21">Figure 8C</figureCitation>
) of
<specimenCount id="408FFD58F5348752A221F7BC91B55F94" box="[539,641,914,940]" pageId="20" pageNumber="21" type="generic" typeStatus="type">one type</specimenCount>
- minute,
<quantity id="91719B34F5348752A33AF7BC90415F94" box="[768,885,914,940]" metricMagnitude="-2" metricUnit="m" metricValue="1.6" metricValueMax="2.1" metricValueMin="1.1" pageId="20" pageNumber="21" unit="mm" value="16.0" valueMax="21.0" valueMin="11.0">11-21 µm</quantity>
(mean
<quantity id="91719B34F5348752A3EBF7BC97175F94" box="[977,1059,914,940]" metricMagnitude="-2" metricUnit="m" metricValue="1.6" pageId="20" pageNumber="21" unit="mm" value="16.0">16 µm</quantity>
), rugose, flat, quadrilocular but occasionally with 2-5 holes; rim and base spinose. Buttons (
<figureCitation id="CEB22A54F5348752A362F79490E55FEC" box="[856,977,954,980]" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="20" pageNumber="21">Figure 8B</figureCitation>
) of moderate size,
<quantity id="91719B34F5348752A489F79496125FEC" box="[1203,1318,954,980]" metricMagnitude="-2" metricUnit="m" metricValue="5.8" metricValueMax="7.6" metricValueMin="4.0" pageId="20" pageNumber="21" unit="mm" value="58.0" valueMax="76.0" valueMin="40.0">40-76 µm</quantity>
(mean
<quantity id="91719B34F5348752A545F79493F65FC4" metricMagnitude="-2" metricUnit="m" metricValue="6.1" pageId="20" pageNumber="21" unit="mm" value="61.0">61 µm</quantity>
), with large (&gt;
<quantity id="91719B34F5348752A148F7CC92F55FC4" box="[370,449,994,1020]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" pageId="20" pageNumber="21" unit="mm" value="15.0">15 µm</quantity>
) knobs but a few smaller ones (
<figureCitation id="CEB22A54F5348752A304F7CC908F5FC4" box="[830,955,994,1020]" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="20" pageNumber="21">Figure 8D</figureCitation>
),
<quantity id="91719B34F5348752A3E9F7CC97735FC4" box="[979,1095,994,1020]" metricMagnitude="-2" metricUnit="m" metricValue="4.75" metricValueMax="5.6" metricValueMin="3.9" pageId="20" pageNumber="21" unit="mm" value="47.5" valueMax="56.0" valueMin="39.0">39-56 µm</quantity>
(mean
<quantity id="91719B34F5348752A498F7CC97C65FC4" box="[1186,1266,994,1020]" metricMagnitude="-2" metricUnit="m" metricValue="4.7" pageId="20" pageNumber="21" unit="mm" value="47.0">47 µm</quantity>
), with smaller knobs (&lt;
<quantity id="91719B34F5348752A0C5F0249278581C" box="[255,332,1034,1060]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" pageId="20" pageNumber="21" unit="mm" value="15.0">15 µm</quantity>
) also present, holes usually four, sometimes more or less. Lenticular plates/spheres large (
<figureCitation id="CEB22A54F5348752A553F02493D85874" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="20" pageNumber="21">Figure 8A</figureCitation>
),
<quantity id="91719B34F5348752A13EF01C92A25874" box="[260,406,1074,1100]" metricMagnitude="-1" metricUnit="m" metricValue="2.8" metricValueMax="3.7" metricValueMin="1.9" pageId="20" pageNumber="21" unit="mm" value="280.0" valueMax="370.0" valueMin="190.0">190-370 µm</quantity>
(mean
<quantity id="91719B34F5348752A1C8F01C91665874" box="[498,594,1074,1100]" metricMagnitude="-1" metricUnit="m" metricValue="3.06" pageId="20" pageNumber="21" unit="mm" value="306.0">306 µm</quantity>
), of several layers of calcareous material. Podial deposits include baskets, perforated plates (
<figureCitation id="CEB22A54F5348752A192F0749129584C" box="[424,541,1114,1140]" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="20" pageNumber="21">Figure 8F</figureCitation>
) and rods (
<figureCitation id="CEB22A54F5348752A298F074902D584C" box="[674,793,1114,1140]" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="20" pageNumber="21">Figure 8E</figureCitation>
) and end-plates. Baskets numerous, similar to those of body wall; plates and rods,
<quantity id="91719B34F5348752A1E7F0AC915558A4" box="[477,609,1154,1180]" metricMagnitude="-1" metricUnit="m" metricValue="1.205" metricValueMax="2.09" metricValueMin="0.32" pageId="20" pageNumber="21" unit="mm" value="120.5" valueMax="209.0" valueMin="32.0">32-209 µm</quantity>
(mean
<quantity id="91719B34F5348752A280F0AC902D58A4" box="[698,793,1154,1180]" metricMagnitude="-1" metricUnit="m" metricValue="1.2" pageId="20" pageNumber="21" unit="mm" value="120.0">120 µm</quantity>
), with marginal knobs, the latter also perforated either throughout length or perforations restricted to ends; end-plates reduced,
<quantity id="91719B34F5348752A43CF084975258FC" box="[1030,1126,1194,1220]" metricMagnitude="-1" metricUnit="m" metricValue="1.51" pageId="20" pageNumber="21" unit="mm" value="151.0">151 µm</quantity>
, with small marginal and larger central holes. Tentacle stalk deposits as smooth, perforated rods (
<figureCitation id="CEB22A54F5348752A3D7F0FC975F58D4" box="[1005,1131,1234,1260]" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="20" pageNumber="21">Figure 8H</figureCitation>
),
<quantity id="91719B34F5348752A4B8F0FC962158D4" box="[1154,1301,1234,1260]" metricMagnitude="-1" metricUnit="m" metricValue="1.425" metricValueMax="1.7899999999999998" metricValueMin="1.06" pageId="20" pageNumber="21" unit="mm" value="142.5" valueMax="179.0" valueMin="106.0">106-179 µm</quantity>
(mean
<quantity id="91719B34F5348752A54AF0FC93F7592C" metricMagnitude="-1" metricUnit="m" metricValue="1.34" pageId="20" pageNumber="21" unit="mm" value="134.0">134 µm</quantity>
); primary branches with thickened, curved, multilocular plates (
<figureCitation id="CEB22A54F5348752A38FF0D49712592C" box="[949,1062,1274,1300]" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="20" pageNumber="21">Figure 8I</figureCitation>
),
<quantity id="91719B34F5348752A407F0D49786592C" box="[1085,1202,1274,1300]" metricMagnitude="-2" metricUnit="m" metricValue="6.8" metricValueMax="9.6" metricValueMin="4.0" pageId="20" pageNumber="21" unit="mm" value="68.0" valueMax="96.0" valueMin="40.0">40-96 µm</quantity>
(mean
<quantity id="91719B34F5348752A531F0D49668592C" box="[1291,1372,1274,1300]" metricMagnitude="-2" metricUnit="m" metricValue="6.3" pageId="20" pageNumber="21" unit="mm" value="63.0">63 µm</quantity>
); tips with delicate, curved, multilocular plates (
<figureCitation id="CEB22A54F5348752A2B4F10C90365904" box="[654,770,1314,1340]" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="20" pageNumber="21">Figure 8J</figureCitation>
),
<quantity id="91719B34F5348752A323F10C90BB5904" box="[793,911,1314,1340]" metricMagnitude="-2" metricUnit="m" metricValue="5.15" metricValueMax="6.3" metricValueMin="4.0" pageId="20" pageNumber="21" unit="mm" value="51.5" valueMax="63.0" valueMin="40.0">40-63 µm</quantity>
(mean
<quantity id="91719B34F5348752A3D0F10C97085904" box="[1002,1084,1314,1340]" metricMagnitude="-2" metricUnit="m" metricValue="5.1" pageId="20" pageNumber="21" unit="mm" value="51.0">51 µm</quantity>
). Introvert with mostly largeknobbed plates,
<quantity id="91719B34F5348752A160F16492E8595C" box="[346,476,1354,1380]" metricMagnitude="-2" metricUnit="m" metricValue="7.9" metricValueMax="11.1" metricValueMin="4.7" pageId="20" pageNumber="21" unit="mm" value="79.0" valueMax="111.0" valueMin="47.0">47-111 µm</quantity>
(mean
<quantity id="91719B34F5348752A20DF16491BD595C" box="[567,649,1354,1380]" metricMagnitude="-2" metricUnit="m" metricValue="7.2" pageId="20" pageNumber="21" unit="mm" value="72.0">72 µm</quantity>
), with four or more holes and a few large rods (ca.
<quantity id="91719B34F5348752A4C2F1649662595C" box="[1272,1366,1354,1380]" metricMagnitude="-1" metricUnit="m" metricValue="1.8699999999999999" pageId="20" pageNumber="21" unit="mm" value="187.0">187 µm</quantity>
) with marginal knobs and few perforations (
<figureCitation id="CEB22A54F5348752A26FF15C91E659B4" box="[597,722,1394,1420]" captionStart="FIGURE 8" captionStartId="19.[151,255,1897,1921]" captionTargetBox="[175,1408,318,1878]" captionTargetId="figure-122@19.[155,1431,298,1895]" captionTargetPageId="19" captionText="FIGURE 8. Ocnus rowei sp. nov. Holotype, SAM-A27991. A. Scale from lateral body wall; B. buttons from lateral body wall; C. baskets from lateral body wall; D. developing buttons from lateral body wall; E. rods from podia; F. plates from podia; G. plates and rod from introvert; H. rods from tentacle stalk and branches; I. thickend plates from tentacle branches; J delicate plates from tentacle tips; K. calcareous ring; L. madreporite. A scale a; B-J scale b; K &amp; L scale c." figureDoi="http://doi.org/10.5281/zenodo.5107105" httpUri="https://zenodo.org/record/5107105/files/figure.png" pageId="20" pageNumber="21">Figure 8G</figureCitation>
).
</paragraph>
<paragraph id="563636D1F5348752A0ADF1EC923D59E4" blockId="20.[151,1436,1474,1660]" box="[151,265,1474,1500]" pageId="20" pageNumber="21">
<typeStatus id="89328873F5348752A0ADF1EC923D59E4" box="[151,265,1474,1500]" pageId="20" pageNumber="21" type="paratype">Paratypes</typeStatus>
</paragraph>
<paragraph id="563636D1F5348752A0FAF1C491995A44" blockId="20.[151,1436,1474,1660]" pageId="20" pageNumber="21">
<typeStatus id="89328873F5348752A0FAF1C492065A3C" box="[192,306,1514,1540]" pageId="20" pageNumber="21" type="paratype">Paratypes</typeStatus>
<quantity id="91719B34F5348752A100F1C492815A3C" box="[314,437,1514,1540]" metricMagnitude="-2" metricUnit="m" metricValue="1.5" metricValueMax="2.0" metricValueMin="1.0" pageId="20" pageNumber="21" unit="mm" value="15.0" valueMax="20.0" valueMin="10.0">10-20 mm</quantity>
in size and all, except two, correspond well with the
<typeStatus id="89328873F5348752A415F1C497A25A3C" box="[1071,1174,1514,1540]" pageId="20" pageNumber="21" type="holotype">holotype</typeStatus>
but in one the anteroventral surface is somewhat sole-like (perhaps a preservation artefact) and has baskets that are slightly larger than those of the
<typeStatus id="89328873F5348752A15BF21492FC5A6C" box="[353,456,1594,1620]" pageId="20" pageNumber="21" type="holotype">holotype</typeStatus>
whereas, in the other, small-knobbed buttons are not as rare as in the
<typeStatus id="89328873F5348752A4C0F21496505A6C" box="[1274,1380,1594,1620]" pageId="20" pageNumber="21" type="holotype">holotype</typeStatus>
; in a few
<typeStatus id="89328873F5348752A0F0F24C920E5A44" box="[202,314,1634,1660]" pageId="20" pageNumber="21" type="paratype">paratypes</typeStatus>
the podia are mostly retracted.
</paragraph>
<paragraph id="563636D1F5348752A0ADF29C92FE5ACC" blockId="20.[151,458,1714,1780]" box="[151,458,1714,1780]" pageId="20" pageNumber="21">
Distribution False Bay, WCP,
<specimenCount id="408FFD58F5348752A1BDF2F492FE5ACC" box="[391,458,1754,1780]" pageId="20" pageNumber="21" type="generic">
<quantity id="91719B34F5348752A1BDF2F492F25ACC" box="[391,454,1754,1780]" metricMagnitude="1" metricUnit="m" metricValue="4.2" pageId="20" pageNumber="21" unit="m" value="42.0">42 m</quantity>
.
</specimenCount>
</paragraph>
<paragraph id="563636D1F5348752A0ADF30493CB5B7C" blockId="20.[151,1436,1834,2020]" box="[151,255,1834,1860]" pageId="20" pageNumber="21">Remarks</paragraph>
<paragraph id="563636D1F5348753A087F37C92CE5DCA" blockId="20.[151,1436,1834,2020]" lastBlockId="21.[151,1436,152,498]" lastPageId="21" lastPageNumber="22" pageId="20" pageNumber="21">
The specimens at hand come very close to
<taxonomicName id="91894D52F5348752A28CF37D90BA5B54" baseAuthorityName="Pallas" baseAuthorityYear="1766" box="[694,910,1875,1900]" class="Holothuroidea" family="Cucumariidae" genus="Pentacta" kingdom="Animalia" order="Dendrochirotida" pageId="20" pageNumber="21" phylum="Echinodermata" rank="species" species="doliolum">
<emphasis id="64FDEAC3F5348752A28CF37D90BA5B54" box="[694,910,1875,1900]" italics="true" pageId="20" pageNumber="21">Pentacta doliolum</emphasis>
</taxonomicName>
in their complement of spicules, so much so that they may be confounded for juvenile of this species.
<bibRefCitation id="32184B20F5348752A37AF354975D5BAC" author="Natasen Moodley, M." box="[832,1129,1914,1940]" pageId="20" pageNumber="21" refId="ref30527" refString="Natasen Moodley, M. (2000) A taxonomic study of some holothuroid echinoderms taken from southern African waters west of Port Elizabeth, in the collections of the South African Museum. MSc. dissertation, University of Durban- Westville, South Africa. 170 pp." type="book" year="2000">Natasen Moodley (2000)</bibRefCitation>
, who initially studied this material, highlighted the differences, but still referred her specimens to
<taxonomicName id="91894D52F5348752A3CAF38D97415B84" baseAuthorityName="Pallas" baseAuthorityYear="1766" box="[1008,1141,1955,1980]" class="Holothuroidea" family="Cucumariidae" genus="Pentacta" kingdom="Animalia" order="Dendrochirotida" pageId="20" pageNumber="21" phylum="Echinodermata" rank="species" species="doliolum">
<emphasis id="64FDEAC3F5348752A3CAF38D97415B84" box="[1008,1141,1955,1980]" italics="true" pageId="20" pageNumber="21">P. doliolum</emphasis>
</taxonomicName>
, despite the fact that she did observe mature gonadal tubules in some specimens. The new species differs from
<taxonomicName id="91894D52F5348752A4ABF3E596225BDC" baseAuthorityName="Pallas" baseAuthorityYear="1766" box="[1169,1302,1995,2020]" class="Holothuroidea" family="Cucumariidae" genus="Pentacta" kingdom="Animalia" order="Dendrochirotida" pageId="20" pageNumber="21" phylum="Echinodermata" rank="species" species="doliolum">
<emphasis id="64FDEAC3F5348752A4ABF3E596225BDC" box="[1169,1302,1995,2020]" italics="true" pageId="20" pageNumber="21">P. doliolum</emphasis>
</taxonomicName>
in its body form (cylindrical, somewhat U-shaped), unequal tentacles, thinness of the body wall (&lt;
<quantity id="91719B34F5358753A496F4B697C65C8A" box="[1196,1266,152,178]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="21" pageNumber="22" unit="mm" value="1.0">1 mm</quantity>
), usually nonrectractile podia, distinct anal papillae in most specimens, minuteness and flatness of baskets, and the dominance of large-knobbed buttons. The possibility that the current material may represent juvenile of
<taxonomicName id="91894D52F5358753A52DF4C696A85D39" baseAuthorityName="Pallas" baseAuthorityYear="1766" box="[1303,1436,232,257]" class="Holothuroidea" family="Cucumariidae" genus="Pentacta" kingdom="Animalia" order="Dendrochirotida" pageId="21" pageNumber="22" phylum="Echinodermata" rank="species" species="doliolum">
<emphasis id="64FDEAC3F5358753A52DF4C696A85D39" box="[1303,1436,232,257]" italics="true" pageId="21" pageNumber="22">P. doliolum</emphasis>
</taxonomicName>
is here discounted because of the near maturity of the gonad and the fact that juvenile of
<emphasis id="64FDEAC3F5358753A49EF53E96045D11" box="[1188,1328,272,297]" italics="true" pageId="21" pageNumber="22">
<taxonomicName id="91894D52F5358753A49EF53E96185D11" baseAuthorityName="Pallas" baseAuthorityYear="1766" box="[1188,1324,272,297]" class="Holothuroidea" family="Cucumariidae" genus="Pentacta" kingdom="Animalia" order="Dendrochirotida" pageId="21" pageNumber="22" phylum="Echinodermata" rank="species" species="doliolum">P. doliolum</taxonomicName>
,
</emphasis>
as stated by
<bibRefCitation id="32184B20F5358753A081F51692465D6A" author="Thandar, A. S." box="[187,370,312,338]" pageId="21" pageNumber="22" pagination="115 - 139" refId="ref31301" refString="Thandar, A. S. (1991) The cucumariid holothurians of southern Africa with the erection of a new genus. South African Journal of Zoology, 26 (3), 115 - 139." type="journal article" year="1991">Thandar (1991)</bibRefCitation>
and here confirmed from a specimen of about the same size as the
<typeStatus id="89328873F5358753A447F51697D05D6A" box="[1149,1252,312,338]" pageId="21" pageNumber="22" type="holotype">holotype</typeStatus>
of the new species, have the same complement of spicules as that of adults. In fact, because of the unequal size of the tentacles the new species is not referred to
<taxonomicName id="91894D52F5358753A252F5A691E45D99" authorityName="Goldfuss" authorityYear="1820" box="[616,720,392,417]" class="Holothuroidea" family="Cucumariidae" genus="Pentacta" kingdom="Animalia" order="Dendrochirotida" pageId="21" pageNumber="22" phylum="Echinodermata" rank="genus">
<emphasis id="64FDEAC3F5358753A252F5A691E45D99" box="[616,720,392,417]" italics="true" pageId="21" pageNumber="22">Pentacta</emphasis>
</taxonomicName>
but to
<taxonomicName id="91894D52F5358753A310F5A690415D99" box="[810,885,392,417]" class="Holothuroidea" family="Cucumariidae" genus="Ocnus" kingdom="Animalia" order="Dendrochirotida" pageId="21" pageNumber="22" phylum="Echinodermata" rank="genus">
<emphasis id="64FDEAC3F5358753A310F5A690415D99" box="[810,885,392,417]" italics="true" pageId="21" pageNumber="22">Ocnus</emphasis>
</taxonomicName>
following the advice of Rowe (pers. comm.), differing from
<taxonomicName id="91894D52F5358753A173F59E92E15DF1" box="[329,469,432,457]" class="Holothuroidea" family="Cucumariidae" genus="Pentacta" kingdom="Animalia" order="Dendrochirotida" pageId="21" pageNumber="22" phylum="Echinodermata" rank="species" species="capensis">
<emphasis id="64FDEAC3F5358753A173F59E92E15DF1" box="[329,469,432,457]" italics="true" pageId="21" pageNumber="22">O. capensis</emphasis>
</taxonomicName>
in the greater complexity and more rugose nature of the baskets and the greater complexity of the large plates.
</paragraph>
</subSubSection>
</treatment>
</document>
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