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<document id="EDF212B7BA60B8381DF1BC9013DA6D42" ID-CLB-Dataset="39069" ID-DOI="10.11865/zs.2016013" ID-GBIF-Dataset="53f61a0f-5bda-4eb8-bd90-5ce9d1f73be9" ID-Zenodo-Dep="270289" ID-ZooBank="urn:lsid:zoobank.org:pub:A599FD08-F5AE-415C-B19A-DA39F8E87640" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1463139724992" checkinUser="plazi" docAuthor="Zhenzu Xu, Jiaqi Huang, Mao Lin, Donghui Guo &amp; Chunguang Wang" docDate="2016" docId="961A87EDFFE2FFADFF54FAC2FCC368DD" docLanguage="en" docName="Taxonomic notes on Hydroidomedusae %28Cnidaria%29 from South China Sea II%3A Family Bythotiaridae %28Anthomedusae%29.pdf" docOrigin="Zoological Systematics 41 (2)" docStyle="DocumentStyle:07E7829F32901B127B59E960199959BD.1:ZoolSyst.2014-.journal_article" docStyleId="07E7829F32901B127B59E960199959BD" docStyleName="ZoolSyst.2014-.journal_article" docStyleVersion="1" docTitle="Eumedusa sp." docType="treatment" docVersion="9" lastPageNumber="153" masterDocId="6A23FF95FFE1FFA9FFDCFFADFF8D696F" masterDocTitle="Taxonomic notes on Hydroidomedusae (Cnidaria) from South China Sea II: Family Bythotiaridae (Anthomedusae)" masterLastPageNumber="157" masterPageNumber="149" pageNumber="152" updateTime="1698662503535" updateUser="ExternalLinkService">
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<mods:title id="492200730DD5A486159325DF3505979C">Taxonomic notes on Hydroidomedusae (Cnidaria) from South China Sea II: Family Bythotiaridae (Anthomedusae)</mods:title>
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<mods:namePart id="E4C5B1904FDE11401FEBB4CC87118E26">Zhenzu Xu</mods:namePart>
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<mods:namePart id="6DC77C652F0AF99D1FD3452A06CE4672">Jiaqi Huang</mods:namePart>
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<mods:namePart id="AF73D1DD619639F4A3382F2A94E75E66">Mao Lin</mods:namePart>
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<mods:namePart id="30CB4BE863220117B8B3C15FF610B088">Donghui Guo</mods:namePart>
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<mods:namePart id="C1BA8454FEF2C6FEE54D63BB86DFC3CD">Chunguang Wang</mods:namePart>
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<mods:date id="E3973BAED5E4FA80A45BF1520B2747FF">2016</mods:date>
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<paragraph id="1E0C36FBFFE2FFAAFF54FAC2FEA96CE7" blockId="3.[136,292,1391,1416]" box="[136,292,1391,1416]" pageId="3" pageNumber="152">
<heading id="45448197FFE2FFAAFF54FAC2FEA96CE7" bold="true" box="[136,292,1391,1416]" centered="true" fontSize="10" level="3" pageId="3" pageNumber="152" reason="2">
<taxonomicName id="D9B34D78FFE2FFAAFF54FAC2FEA96CE7" box="[136,292,1391,1416]" class="Hydrozoa" family="Bythotiaridae" genus="Eumedusa" higherTaxonomySource="CoL" kingdom="Animalia" order="Anthoathecata" pageId="3" pageNumber="152" phylum="Cnidaria" rank="species" species="sp.">
<emphasis id="2CC7EAE9FFE2FFAAFF54FAC2FEA96CE7" bold="true" box="[136,292,1391,1416]" pageId="3" pageNumber="152">
<emphasis id="2CC7EAE9FFE2FFAAFF54FAC2FF706CE8" bold="true" box="[136,253,1391,1415]" italics="true" pageId="3" pageNumber="152">Eumedusa</emphasis>
sp.
</emphasis>
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</heading>
</paragraph>
<paragraph id="1E0C36FBFFE2FFAAFEE0FADDFE3A6CE7" blockId="3.[316,439,1392,1416]" box="[316,439,1392,1416]" pageId="3" pageNumber="152">
<heading id="45448197FFE2FFAAFEE0FADDFE3A6CE7" box="[316,439,1392,1416]" centered="true" fontSize="10" level="5" pageId="3" pageNumber="152" reason="4">
(
<figureCitation id="86882A7EFFE2FFAAFE9FFADDFE056CE8" box="[323,392,1392,1416]" captionStart="Figures 7 9" captionStartId="4.[155,227,2024,2046]" captionTargetBox="[189,1399,1546,1983]" captionTargetId="figure@4.[189,1399,1546,1983]" captionTargetPageId="4" captionText="Figures 7 9. Bythotiaridae spp., side view. 7. Eumedusa sp. 8. Protiaropsis pedunculata Xu, Huang &amp; Guo, sp. nov. 9. P. tetranema Xu, Huang &amp; Wang, sp. nov. Scale bars: 7 = 1.0 mm; 8 9 = 0.5 mm." httpUri="https://zenodo.org/record/270293/files/figure.png" pageId="3" pageNumber="152">Figs 7</figureCitation>
,
<figureCitation id="86882A7EFFE2FFAAFE48FADDFE226CE7" box="[404,431,1392,1416]" captionStart="Figures 10 13" captionStartId="5.[155,227,1459,1481]" captionTargetBox="[210,1394,822,1404]" captionTargetId="figure@5.[189,1399,814,1419]" captionTargetPageId="5" captionText="Figures 10 13. Bythotiaridae spp. 10. Eumedusa sp., side view. 11 12. Protiaropsis pedunculata Xu, Huang &amp; Guo, sp. nov. 11. Side view. 12. Gonads, apical view. 13. P. tetranema Xu, Huang &amp; Wang, sp. nov., side view. Scale bars: 10 = 1.0 mm; 11 13 = 0.5 mm." httpUri="https://zenodo.org/record/270295/files/figure.png" pageId="3" pageNumber="152">10</figureCitation>
)
</heading>
</paragraph>
</subSubSection>
<subSubSection id="56A96570FFE2FFAAFF61FA0AFC556C8D" pageId="3" pageNumber="152" type="materials_examined">
<paragraph id="1E0C36FBFFE2FFAAFF61FA0AFC556C8D" blockId="3.[136,1458,1447,2060]" pageId="3" pageNumber="152">
Material examined. One specimen (TIO 014), southern South
<collectingCountry id="66A4766BFFE2FFAAFCB0FA0AFC216CD0" box="[876,940,1447,1471]" name="China" pageId="3" pageNumber="152">China</collectingCountry>
Sea, Station
<collectionCode id="78A2AE3EFFE2FFAAFB9DFA0AFB196CD1" box="[1089,1172,1447,1470]" pageId="3" pageNumber="152">NNXW</collectionCode>
12014 S01-14 (
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,
<geoCoordinate id="7B87503CFFE2FFAAFF54FA67FF7C6C8D" box="[136,241,1482,1506]" direction="east" orientation="longitude" pageId="3" pageNumber="152" precision="925" value="110.26667">110°16E</geoCoordinate>
),
<date id="6A0D103BFFE2FFAAFED8FA67FE5B6C8D" box="[260,470,1482,1506]" pageId="3" pageNumber="152" value="2012-09-21">21 September 2012</date>
, sampling depth 2 284
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, coll. Xiang Peng.
</paragraph>
</subSubSection>
<subSubSection id="56A96570FFE2FFAAFF61FA41FADF6E53" pageId="3" pageNumber="152" type="description">
<paragraph id="1E0C36FBFFE2FFAAFF61FA41FADF6E53" blockId="3.[136,1458,1447,2060]" pageId="3" pageNumber="152">
Description. Umbrella
<quantity id="D94B9B1EFFE2FFAAFE68FA41FD8F6F6B" box="[436,514,1516,1540]" metricMagnitude="-3" metricUnit="m" metricValue="5.5" pageId="3" pageNumber="152" unit="mm" value="5.5">5.5 mm</quantity>
in height,
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in width, wider than the height, bell almost hemispherical, jelly thick, slightly thicker at apex; upper portion of manubrium broad, extended on 4 unbranched radial canals forming a cross as seen from above, manubrium short, about 1/4 of the height of bell cavity; mouth simple, quadrate shaped, with 4 small perradial lips; with 4 interradial and 8 adradial centripetal canals arising from circular canal, and all interradial and most of the adradial centripetal canals, joining base of manubrium, but some short and diverticular; with 4 perradial, 4 interradial, and 8 adradial tentacles, with perradial and interradial tentacles are all fully developed, but all adradial tentacles very short and developing; all tentacles without base swelling, but their basal part adnate to exumbrella, each tentacular base with red pigment spot; all full-length tentacles end in a terminal swelling and thus forming long club-shaped, with a distal concentration of nematocysts; tentacles shorter than full-length ones without distal swelling; without ocelli; gonads slightly folded and developing, on perradial region of the manubrium, and extended base of perradial radial canals.
</paragraph>
</subSubSection>
<subSubSection id="56A96570FFE2FFADFF61F8EAFCC368DD" lastPageId="4" lastPageNumber="153" pageId="3" pageNumber="152" type="discussion">
<paragraph id="1E0C36FBFFE2FFAAFF61F8EAFCBA6ECB" blockId="3.[136,1458,1447,2060]" pageId="3" pageNumber="152">
Remarks. The medusa is placed under the genus
<taxonomicName id="D9B34D78FFE2FFAAFD0BF8EAFCCB6E30" box="[727,838,1863,1887]" class="Hydrozoa" family="Bythotiaridae" genus="Eumedusa" higherTaxonomySource="CoL" kingdom="Animalia" order="Anthoathecata" pageId="3" pageNumber="152" phylum="Cnidaria" rank="genus">
<emphasis id="2CC7EAE9FFE2FFAAFD0BF8EAFCCB6E30" box="[727,838,1863,1887]" italics="true" pageId="3" pageNumber="152">Eumedusa</emphasis>
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because of following: 4 unbranched radial canals and 4 interradial and 8 adradial centripetal canals, tentacles of two kinds, large hollow ones with terminal knob, small ones without terminal knob, tentacle without base swelling; no ocelli.
</paragraph>
<paragraph id="1E0C36FBFFE2FFADFF61F802FD926849" blockId="3.[136,1458,1447,2060]" lastBlockId="4.[136,1451,236,434]" lastPageId="4" lastPageNumber="153" pageId="3" pageNumber="152">
Only one species,
<taxonomicName id="D9B34D78FFE2FFAAFE4DF81DFD296EA8" authority="Linko, 1913" authorityName="Linko" authorityYear="1913" box="[401,676,1967,1991]" class="Hydrozoa" family="Bythotiaridae" genus="Eumedusa" higherTaxonomySource="CoL" kingdom="Animalia" order="Anthoathecata" pageId="3" pageNumber="152" phylum="Cnidaria" rank="species" species="birulai">
<emphasis id="2CC7EAE9FFE2FFAAFE4DF81DFE706EA8" box="[401,509,1967,1991]" italics="true" pageId="3" pageNumber="152">E. birulai</emphasis>
(Linko, 1913)
</taxonomicName>
, is reported under the genus
<taxonomicName id="D9B34D78FFE2FFAAFC2BF802FAFE6EA8" authority="Bouillon et al., 2006" authorityName="Bouillon et al." authorityYear="2006" box="[1015,1395,1967,1991]" class="Hydrozoa" family="Bythotiaridae" genus="Eumedusa" higherTaxonomySource="CoL" kingdom="Animalia" order="Anthoathecata" pageId="3" pageNumber="152" phylum="Cnidaria" rank="genus">
<emphasis id="2CC7EAE9FFE2FFAAFC2BF802FBEB6EA8" box="[1015,1126,1967,1991]" italics="true" pageId="3" pageNumber="152">Eumedusa</emphasis>
(
<bibRefCitation id="7A224B0AFFE2FFAAFBA5F802FAE66EA8" author="Bouillon, J." box="[1145,1387,1967,1991]" journalOrPublisher="Memoires du Museum national d'Histoire Naturelle" pageId="3" pageNumber="152" pagination="1 - 591" part="194" refString="Bouillon, J. Gravili, C. Pages, F. Gili, J-M, Boero, F. 2006. An introduction to Hydrozoa. Memoires du Museum national d'Histoire Naturelle, 194: 1 - 591." title="An introduction to Hydrozoa" type="journal article" year="2006">
Bouillon
<emphasis id="2CC7EAE9FFE2FFAAFB38F81DFA926EA8" box="[1252,1311,1967,1991]" italics="true" pageId="3" pageNumber="152">et al.</emphasis>
, 2006
</bibRefCitation>
)
</taxonomicName>
. The unnamed medusa is similar to
<taxonomicName id="D9B34D78FFE2FFAAFE3FF87FFD7E6E85" authority="Linko, 1913" authorityName="Linko" authorityYear="1913" box="[483,755,2001,2026]" class="Hydrozoa" family="Bythotiaridae" genus="Eumedusa" higherTaxonomySource="CoL" kingdom="Animalia" order="Anthoathecata" pageId="3" pageNumber="152" phylum="Cnidaria" rank="species" species="birulai">
<emphasis id="2CC7EAE9FFE2FFAAFE3FF87FFDC36E86" box="[483,590,2001,2025]" italics="true" pageId="3" pageNumber="152">E. birulai</emphasis>
(Linko, 1913)
</taxonomicName>
, but it can be separated from the latter by: 1) medusa with 8 adradial centripetal canals, and most of adradial centripetal canals joining the base of manubrium; 2) with 8 fully developed tentacles with terminal knob of nematocysts and 8 short adradial tentacles without terminal konb; 3) all tentacular base with red pigment spot.
</paragraph>
<paragraph id="1E0C36FBFFE5FFADFF61FE9FFBF268E0" blockId="4.[136,1451,236,434]" pageId="4" pageNumber="153">
Although non-mature gonad was found in the preserved samples, the medusa from south of
<collectingCountry id="66A4766BFFE5FFADFB74FE9FFB656825" box="[1192,1256,306,330]" name="China" pageId="4" pageNumber="153">China</collectingCountry>
Sea is a probably new species.
<collectingCountry id="66A4766BFFE5FFADFEC1FEF8FEB66802" box="[285,315,341,365]" name="American Samoa" pageId="4" pageNumber="153">As</collectingCountry>
only one immature animal was found and the adult morphology of gonad in
<taxonomicName id="D9B34D78FFE5FFADFB79FEF9FA996803" box="[1189,1300,340,364]" class="Hydrozoa" family="Bythotiaridae" genus="Eumedusa" higherTaxonomySource="CoL" kingdom="Animalia" order="Anthoathecata" pageId="4" pageNumber="153" phylum="Cnidaria" rank="genus">
<emphasis id="2CC7EAE9FFE5FFADFB79FEF9FA996803" box="[1189,1300,340,364]" italics="true" pageId="4" pageNumber="153">Eumedusa</emphasis>
</taxonomicName>
is irregularly folded, it seems advisable to defer creation of a new species name until the life cycle is known.
</paragraph>
<paragraph id="1E0C36FBFFE5FFADFF61FE37FCC368DD" blockId="4.[136,1451,236,434]" box="[189,846,410,434]" pageId="4" pageNumber="153">This genus is recorded from Chinese waters for the first time.</paragraph>
</subSubSection>
</treatment>
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