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<document id="407D2FD33B8D8CB043E1A008D8CD7C24" ID-CLB-Dataset="32747" ID-DOI="10.11646/zootaxa.4293.1.1" ID-GBIF-Dataset="dc2674e2-e260-4b6e-ad3a-731d610bccc5" ID-ISSN="1175-5326" ID-Zenodo-Dep="828475" ID-ZooBank="6FF96B5C-1F80-47ED-9962-19603DCBF550" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1500108894142" checkinUser="plazi" docAuthor="ÁLVARO L. PEÑA CANTERO" docDate="2017" docId="C84B87CACC3FFF9EE8DD053F0E8AF44E" docLanguage="en" docName="zootaxa.4293.1.1.pdf.imf" docOrigin="Zootaxa 4293 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Symplectoscyphus exochus Blanco 1982" docType="treatment" docVersion="19" lastPageNumber="44" masterDocId="3472FFB2CC16FFB5E84A00470F1FF553" masterDocTitle="Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa" masterLastPageNumber="65" masterPageNumber="1" pageNumber="42" updateTime="1698465181473" updateUser="ExternalLinkService">
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<mods:title id="6B6DC18C32E473D04F256B94F7F95F6A">Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa</mods:title>
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<treatment id="C84B87CACC3FFF9EE8DD053F0E8AF44E" ID-DOI="http://doi.org/10.5281/zenodo.4386858" ID-GBIF-Taxon="132548865" ID-Zenodo-Dep="4386858" LSID="urn:lsid:plazi:treatment:C84B87CACC3FFF9EE8DD053F0E8AF44E" httpUri="http://treatment.plazi.org/id/C84B87CACC3FFF9EE8DD053F0E8AF44E" lastPageId="43" lastPageNumber="44" pageId="41" pageNumber="42">
<subSubSection id="08F86557CC3FFF9CE8DD053F0E17F0E0" pageId="41" pageNumber="42" type="nomenclature">
<paragraph id="405D36DCCC3FFF9CE8DD053F0D9BF0C1" blockId="41.[151,644,1400,1459]" box="[151,644,1400,1426]" pageId="41" pageNumber="42">
<heading id="1B1581B0CC3FFF9CE8DD053F0D9BF0C1" bold="true" box="[151,644,1400,1426]" fontSize="11" level="1" pageId="41" pageNumber="42" reason="1">
<taxonomicName id="87E24D5FCC3FFF9CE8DD053F0D9BF0C1" authority="Blanco, 1982" authorityName="Blanco" authorityYear="1982" box="[151,644,1400,1426]" class="Hydrozoa" family="Sertulariidae" genus="Symplectoscyphus" kingdom="Animalia" order="Leptothecata" pageId="41" pageNumber="42" phylum="Cnidaria" rank="species" species="exochus">
<emphasis id="7296EACECC3FFF9CE8DD053F0D9BF0C1" bold="true" box="[151,644,1400,1426]" pageId="41" pageNumber="42">
<emphasis id="7296EACECC3FFF9CE8DD053F0EC2F0C1" bold="true" box="[151,477,1400,1426]" italics="true" pageId="41" pageNumber="42">Symplectoscyphus exochus</emphasis>
<bibRefCitation id="24734B2DCC3FFF9CE9AE053F0D9BF0C1" author="Blanco" box="[484,644,1400,1426]" pageId="41" pageNumber="42" refString="Blanco, O. M. (1982) Un nuevo sertularido de Isla Baja. Revista del Museo de La Plata, Zoologia, Nueva Serie, 13 (133), 39 - 43, figs. 1 - 7 on 2 pls." type="journal article" year="1982">Blanco, 1982</bibRefCitation>
</emphasis>
</taxonomicName>
</heading>
</paragraph>
<paragraph id="405D36DCCC3FFF9CE8DD05DD0E17F0E0" blockId="41.[151,644,1400,1459]" box="[151,264,1434,1459]" pageId="41" pageNumber="42">
(
<figureCitation id="D8D92A59CC3FFF9CE8D505DD0FEFF0E0" box="[159,240,1434,1459]" captionStart="FIGURE 12" captionStartId="36.[151,250,1766,1788]" captionTargetBox="[277,1330,219,1700]" captionTargetId="figure@36.[246,1346,193,1748]" captionTargetPageId="36" captionText="FIGURE 12. Antarctoscyphus admirabilis Peña Cantero, Svoboda &amp; Vervoort, 1999: A, branch internode with hydrotheca. Symplectoscyphus aggregatus (Jäderholm, 1917): B, fragment of branch with hydrothecal arrangement and shape. Symplectoscyphus anae Peña Cantero, Svoboda &amp; Vervoort, 2002: C, internode with hydrotheca. Symplectoscyphus densus sp. nov.: D E, fragment of branch with hydrothecal arrangement and shape; Symplectoscyphus exochus Blanco, 1982: F, internode with hydrotheca. Symplectoscyphus liouvillei (Billard, 1914): G, internode with hydrotheca. Symplectoscyphus vanhoeffeni Totton, 1930: H, internode with hydrotheca. Symplectoscyphus weddelli Peña Cantero, Svoboda &amp; Vervoort, 2002: I, internode with hydrotheca. Symplectoscyphus sp. 1: J, internode with hydrotheca. Symplectoscyphus sp. 2: K, internode with hydrotheca. (A from Stn 17; B from Stn 112; C from Stn 126; D from Stn 7 (holotype); E from Stn 97 (paratype); F from Stn 67; G from Stn 150; H from Stn 130; I, from Stn 53; J from Stn 7; K from Stn 25). Scale bar: 250 µm." httpUri="https://zenodo.org/record/828499/files/figure.png" pageId="41" pageNumber="42">Fig. 12</figureCitation>
F)
</paragraph>
</subSubSection>
<subSubSection id="08F86557CC3FFF9CE8DD05A50A83F0AB" box="[151,1436,1506,1528]" pageId="41" pageNumber="42" type="description">
<paragraph id="405D36DCCC3FFF9CE8DD05A50A83F0AB" blockId="41.[151,1436,1506,1528]" box="[151,1436,1506,1528]" pageId="41" pageNumber="42">
<treatmentCitationGroup id="60F211F2CC3FFF9CE8DD05A50A83F0AB" box="[151,1436,1506,1528]" pageId="41" pageNumber="42">
<emphasis id="7296EACECC3FFF9CE8DD05A50EA2F0AB" box="[151,445,1506,1528]" italics="true" pageId="41" pageNumber="42">
<taxonomicName id="87E24D5FCC3FFF9CE8DD05A50E50F0AB" box="[151,335,1506,1528]" class="Hydrozoa" family="Sertulariidae" genus="Symplectoscyphus" kingdom="Animalia" order="Leptothecata" pageId="41" pageNumber="42" phylum="Cnidaria" rank="genus">Symplectoscyphus</taxonomicName>
exochus—
</emphasis>
<treatmentCitation id="C14310CDCC3FFF9CE9F705A40DAAF0AB" author="Pena" box="[445,693,1506,1528]" page="36" pageId="41" pageNumber="42" year="2010">
<bibRefCitation id="24734B2DCC3FFF9CE9F705A40D8CF0AB" author="Pena" box="[445,659,1506,1528]" pageId="41" pageNumber="42" refString="Pena Cantero, A. L. (2010 a) On a new Antarctic species of Symplectoscyphus Marktanner-Turneretscher, 1890 (Cnidaria, Hydrozoa, Sertulariidae), with an annotated checklist of the Antarctic species of the genus. Zootaxa, 2494, 29 - 44." type="journal article" year="2010" yearSuffix="a">Peña Cantero, 2010a</bibRefCitation>
: 36
</treatmentCitation>
(synonymy); 2012: 861, fig. 7b; 2013: 133, fig. 4C; 2014a: 1724, fig. 6c.
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<subSubSection id="08F86557CC3FFF9CE8DD06620D62F3F9" pageId="41" pageNumber="42" type="materials_examined">
<paragraph id="405D36DCCC3FFF9CE8DD06620D62F3F9" blockId="41.[151,1436,1573,2030]" pageId="41" pageNumber="42">
<emphasis id="7296EACECC3FFF9CE8DD06620E93F36D" bold="true" box="[151,396,1573,1598]" pageId="41" pageNumber="42">Material examined.</emphasis>
Stn 53, incipient stem with three hydrothecae
<collectedFrom id="F3FE7521CC3FFF9CEBBD06610A29F36E" box="[1015,1334,1573,1598]" pageId="41" pageNumber="42">
on
<taxonomicName id="87E24D5FCC3FFF9CEC6C06620A29F36E" box="[1062,1334,1573,1598]" class="Hydrozoa" family="Sertulariidae" genus="Staurotheca" kingdom="Animalia" order="Leptothecata" pageId="41" pageNumber="42" phylum="Cnidaria" rank="species" species="nonscripta">
<emphasis id="7296EACECC3FFF9CEC6C06620A29F36E" box="[1062,1334,1573,1598]" italics="true" pageId="41" pageNumber="42">Staurotheca nonscripta</emphasis>
</taxonomicName>
</collectedFrom>
(NIWA 117577)—material doubtfully assigned to this species; Stn 67, two stems up to
<quantity id="871A9B39CC3FFF9CEC10060D0BBEF332" box="[1114,1185,1610,1633]" metricMagnitude="-3" metricUnit="m" metricValue="7.0" pageId="41" pageNumber="42" unit="mm" value="7.0">7 mm</quantity>
high
<collectedFrom id="F3FE7521CC3FFF9CECA7060D0E10F3D6" pageId="41" pageNumber="42">
on
<taxonomicName id="87E24D5FCC3FFF9CED5C060E0E10F3D6" class="Hydrozoa" family="Sertulariidae" genus="Staurotheca" kingdom="Animalia" order="Leptothecata" pageId="41" pageNumber="42" phylum="Cnidaria" rank="species" species="nonscripta">
<emphasis id="7296EACECC3FFF9CED5C060E0E10F3D6" italics="true" pageId="41" pageNumber="42">Staurotheca nonscripta</emphasis>
</taxonomicName>
</collectedFrom>
(MNCN 2.03/637)—material doubtfully assigned to this species; Stn 148, stem fragment
<quantity id="871A9B39CC3FFF9CED4606290A43F3D6" box="[1292,1372,1646,1670]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="41" pageNumber="42" unit="mm" value="10.0">10 mm</quantity>
long, with incipient gonothecae (NIWA 117578).
</paragraph>
</subSubSection>
<subSubSection id="08F86557CC3FFF9CE88D06F20BB2F3A1" pageId="41" pageNumber="42" type="description">
<paragraph id="405D36DCCC3FFF9CE88D06F20BB2F3A1" blockId="41.[151,1436,1573,2030]" pageId="41" pageNumber="42">
<emphasis id="7296EACECC3FFF9CE88D06F20EFEF39D" bold="true" box="[199,481,1717,1742]" pageId="41" pageNumber="42">Measurements (in µm).</emphasis>
<emphasis id="7296EACECC3FFF9CE9A006F20D65F39D" box="[490,634,1717,1742]" italics="true" pageId="41" pageNumber="42">Hydrothecae</emphasis>
: length of abcauline wall 230, length free part of adcauline wall 200, length adnate part of adcauline wall 200, length adcauline wall 400, diameter at aperture 120.
</paragraph>
</subSubSection>
<subSubSection id="08F86557CC3FFF9EE88D06BA0E8AF44E" lastPageId="43" lastPageNumber="44" pageId="41" pageNumber="42" type="discussion">
<paragraph id="405D36DCCC3FFF9CE88D06BA0DA6F2F5" blockId="41.[151,1436,1573,2030]" pageId="41" pageNumber="42">
<emphasis id="7296EACECC3FFF9CE88D06BA0E24F245" bold="true" box="[199,315,1789,1814]" pageId="41" pageNumber="42">Remarks.</emphasis>
Despite the scarcity of material from Stn 148, the species could be undoubtedly identified because of the presence of incipient gonothecae with ringed walls, which undoubtedly separates it from
<taxonomicName id="87E24D5FCC3FFF9CED5907650A8BF269" box="[1299,1428,1825,1850]" class="Hydrozoa" family="Sertulariidae" genus="Symplectoscyphus" kingdom="Animalia" order="Leptothecata" pageId="41" pageNumber="42" phylum="Cnidaria" rank="species" species="glacialis">
<emphasis id="7296EACECC3FFF9CED5907650A8BF269" box="[1299,1428,1825,1850]" italics="true" pageId="41" pageNumber="42">S. glacialis</emphasis>
</taxonomicName>
. However, the remaining material is doubtfully assigned to
<taxonomicName id="87E24D5FCC3FFF9CEB6607010CBCF20D" box="[812,931,1861,1886]" class="Hydrozoa" family="Sertulariidae" genus="Symplectoscyphus" kingdom="Animalia" order="Leptothecata" pageId="41" pageNumber="42" phylum="Cnidaria" rank="species" species="exochus">
<emphasis id="7296EACECC3FFF9CEB6607010CBCF20D" box="[812,931,1861,1886]" italics="true" pageId="41" pageNumber="42">S. exochus</emphasis>
</taxonomicName>
due to its infertile condition. It is difficult to separate this species from
<taxonomicName id="87E24D5FCC3FFF9CE98F072D0D5BF2D1" box="[453,580,1897,1922]" class="Hydrozoa" family="Sertulariidae" genus="Symplectoscyphus" kingdom="Animalia" order="Leptothecata" pageId="41" pageNumber="42" phylum="Cnidaria" rank="species" species="glacialis">
<emphasis id="7296EACECC3FFF9CE98F072D0D5BF2D1" box="[453,580,1897,1922]" italics="true" pageId="41" pageNumber="42">S. glacialis</emphasis>
</taxonomicName>
in the absence of gonothecae (cf.
<bibRefCitation id="24734B2DCC3FFF9CEB85072D0A2CF2D1" author="Pena" box="[975,1331,1898,1922]" pageId="41" pageNumber="42" refString="Pena Cantero, A. L. &amp; Vervoort, W. (2009) Benthic hydroids (Cnidaria: Hydrozoa) from the Bransfield Strait area (Antarctica) collected by Brazilian expeditions, with the description of a new species. Polar Biology, 32, 83 - 92. https: // doi. org / 10.1007 / s 00300 - 008 - 0506 - 0" type="journal article" year="2009">Peña Cantero &amp; Vervoort 2009</bibRefCitation>
) because both species may have very similar hydrothecae.
</paragraph>
<paragraph id="405D36DCCC3FFF9CE88D07F60DC5F2BE" blockId="41.[151,1436,1573,2030]" pageId="41" pageNumber="42">
<emphasis id="7296EACECC3FFF9CE88D07F60EE9F299" bold="true" box="[199,502,1969,1994]" pageId="41" pageNumber="42">Ecology and distribution.</emphasis>
Eurybathic species, collected at depths from 15 (
<bibRefCitation id="24734B2DCC3FFF9CEC6A07F50BCCF299" author="Vervoort" box="[1056,1235,1969,1994]" pageId="41" pageNumber="42" refString="Vervoort, W. (1972 b) Hydroids from submarine cliffs near Arthur Harbour, Palmer Archipelago, Antarctica. Zoologische Mededelingen, 47 (25), 337 - 357." type="journal article" year="1972" yearSuffix="b">Vervoort 1972b</bibRefCitation>
) to
<quantity id="871A9B39CC3FFF9CED4A07F60A4AF29A" box="[1280,1365,1969,1994]" metricMagnitude="3" metricUnit="m" metricValue="1.958" pageId="41" pageNumber="42" unit="m" value="1958.0">1958 m</quantity>
(
<bibRefCitation id="24734B2DCC3FFF9CED2E07F50E2CF2BD" author="Pena" pageId="41" pageNumber="42" refString="Pena Cantero, A. L. (2012) Filling biodiversity gaps: benthic hydroids from the Bellingshausen Sea (Antarctica). Polar Biology, 35, 851 - 865." type="journal article" year="2012">Peña Cantero 2012</bibRefCitation>
); present material from
<quantity id="871A9B39CC3FFF9CEA7407910DC8F2BE" box="[574,727,2006,2030]" metricMagnitude="2" metricUnit="m" metricValue="3.9299999999999997" metricValueMax="3.97" metricValueMin="3.8899999999999997" pageId="41" pageNumber="42" unit="m" value="393.0" valueMax="397.0" valueMin="389.0">
389 to
<specimenCount id="56E4FD55CC3FFF9CEAC607910DC8F2BE" box="[652,727,2006,2030]" pageId="41" pageNumber="42" type="generic">397 m</specimenCount>
</quantity>
.
</paragraph>
<caption id="149D6654CC3CFF9FE8DD07320B57F2B4" httpUri="https://zenodo.org/record/828503/files/figure.png" pageId="42" pageNumber="43" targetBox="[245,1345,212,1870]" targetPageId="42">
<paragraph id="405D36DCCC3CFF9FE8DD07320B57F2B4" blockId="42.[151,1436,1909,2023]" pageId="42" pageNumber="43">
<emphasis id="7296EACECC3CFF9FE8DD07320E3AF2D9" bold="true" box="[151,293,1909,1931]" pageId="42" pageNumber="43">FIGURE 14.</emphasis>
Holotype of
<taxonomicName id="87E24D5FCC3CFF9FE9F607320DDAF2D8" box="[444,709,1909,1931]" class="Hydrozoa" family="Sertulariidae" genus="Symplectoscyphus" kingdom="Animalia" order="Leptothecata" pageId="42" pageNumber="43" phylum="Cnidaria" rank="species" species="densus" status="sp. nov.">
<emphasis id="7296EACECC3CFF9FE9F607320DDAF2D8" box="[444,709,1909,1931]" italics="true" pageId="42" pageNumber="43">Symplectoscyphus densus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="69A557B5CC3CFF9FEA9B07320C38F2D9" box="[721,807,1909,1930]" pageId="42" pageNumber="43" rank="species">
<emphasis id="7296EACECC3CFF9FEA9B07320C38F2D9" bold="true" box="[721,807,1909,1930]" pageId="42" pageNumber="43">sp. nov.</emphasis>
</taxonomicNameLabel>
: A, fragment of the stem with arrangement and shape of hydrothecae; B,
<emphasis id="7296EACECC3CFF9FE91807D30E9CF2F9" box="[338,387,1940,1962]" italics="true" pageId="42" pageNumber="43">idem</emphasis>
, also with branch origin; CD, hydrothecae; E, detail of hydrothecal aperture. Paratype of
<taxonomicName id="87E24D5FCC3CFF9FE8DD07F50E86F29B" box="[151,409,1970,1992]" class="Hydrozoa" family="Sertulariidae" genus="Symplectoscyphus" kingdom="Animalia" order="Leptothecata" pageId="42" pageNumber="43" phylum="Cnidaria" rank="species" species="densus" status="sp. nov.">
<emphasis id="7296EACECC3CFF9FE8DD07F50E86F29B" box="[151,409,1970,1992]" italics="true" pageId="42" pageNumber="43">Symplectoscyphus densus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="69A557B5CC3CFF9FE9D507F50EF0F294" box="[415,495,1970,1991]" pageId="42" pageNumber="43" rank="species">
<emphasis id="7296EACECC3CFF9FE9D507F50EF0F294" bold="true" box="[415,495,1970,1991]" pageId="42" pageNumber="43">sp. nov.</emphasis>
</taxonomicNameLabel>
; F, fragment of branch with arrangement and shape of hydrothecae; GH, hydrothecae. (AE from Stn 7; FH from Stn 97). Scale bar: 200 µm (AB, F), 100 µm (CD, GH), 50 µm (E).
</paragraph>
</caption>
<paragraph id="405D36DCCC3DFF9EE88D00D00E8AF44E" blockId="43.[151,1436,151,285]" pageId="43" pageNumber="44">
<materialsCitation id="F08A3C81CC3DFF9EE88D00D00E8EF44E" ID-GBIF-Occurrence="1572325093" country="Antarctica" location="Moubray Bay" municipality="Low Island" pageId="43" pageNumber="44" specimenCount="1" stateProvince="Coast">
Circum-Antarctic (
<bibRefCitation id="24734B2DCC3DFF9EE9D100DF0D9AF5E3" author="Pena" box="[411,645,152,176]" pageId="43" pageNumber="44" refString="Pena Cantero, A. L. (2014 a) Benthic hydroids (Cnidaria, Hydrozoa) from the continental shelf and slope off Queen Mary Coast (East Antarctica). Polar Biology, 37, 1711 - 1731." type="journal article" year="2014" yearSuffix="a">Peña Cantero 2014a</bibRefCitation>
). Recently reported from the Bellingshausen Sea (
<bibRefCitation id="24734B2DCC3DFF9EECF100DF0A8AF5E3" author="Pena" box="[1211,1429,152,176]" pageId="43" pageNumber="44" refString="Pena Cantero, A. L. (2012) Filling biodiversity gaps: benthic hydroids from the Bellingshausen Sea (Antarctica). Polar Biology, 35, 851 - 865." type="journal article" year="2012">Peña Cantero 2012</bibRefCitation>
) and off
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(Peña Cantero 2013), in West
<taxonomicName id="87E24D5FCC3DFF9EEA8000FB0C5DF586" box="[714,834,188,213]" class="Hydrozoa" family="Sertulariidae" genus="Staurotheca" kingdom="Animalia" order="Leptothecata" pageId="43" pageNumber="60" phylum="Cnidaria" rank="species" species="antarctica">
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</taxonomicName>
, and off Queen Mary
<collectingRegion id="8226F83ECC3DFF9EEC7100FB0B64F587" box="[1083,1147,188,212]" country="New Zealand" name="West Coast" pageId="43" pageNumber="44">Coast</collectingRegion>
(
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), in East
<taxonomicName id="87E24D5FCC3DFF9EE88500980E58F5AB" box="[207,327,223,248]" class="Hydrozoa" family="Sertulariidae" genus="Staurotheca" kingdom="Animalia" order="Leptothecata" pageId="43" pageNumber="60" phylum="Cnidaria" rank="species" species="antarctica">
<collectingCountry id="38F5764CCC3DFF9EE88500980E58F5AB" box="[207,327,223,248]" name="Antarctica" pageId="43" pageNumber="44">Antarctica</collectingCountry>
</taxonomicName>
. See
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for previous records. Present material is the first record from the Ross Sea, off
<location id="453D6007CC3DFF9EE8BE01430E8EF44E" LSID="urn:lsid:plazi:treatment:C84B87CACC3FFF9EE8DD053F0E8AF44E:453D6007CC3DFF9EE8BE01430E8EF44E" box="[244,401,260,285]" country="Antarctica" municipality="Low Island" name="Moubray Bay" pageId="43" pageNumber="44" stateProvince="Coast">Moubray Bay</location>
</materialsCitation>
.
</paragraph>
</subSubSection>
</treatment>
</document>