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<document ID-CLB-Dataset="24755" ID-DOI="http://dx.doi.org/10.3897/zookeys.893.46923" ID-GBIF-Dataset="c941edd5-de40-4cbf-aa06-1baac5d36f1c" ID-PMC="PMC6901611" ID-Pensoft-Pub="1313-2970-893-91" ID-Pensoft-UUID="E8A0151ADE0F532CA16E0710F6F2BC50" ID-PubMed="31844401" ID-ZooBank="4E267EC6A94F4227ADF5700DC17F0D87" ModsDocID="1313-2970-893-91" checkinTime="1575325048369" checkinUser="pensoft" docAuthor="Ohtsuka, Susumu &amp; Boxshall, Geoffrey A." docDate="2019" docId="92683892B77C558DA1816F3E64493679" docLanguage="en" docName="ZooKeys 893: 91-113" docOrigin="ZooKeys 893" docSource="http://dx.doi.org/10.3897/zookeys.893.46923" docTitle="Caligus chinglonglini Ohtsuka &amp; Boxshall, 2019, sp. nov." docType="treatment" docUuid="41B191CB-B10D-4015-AC2D-B4407FDBE6D3" docUuidSource="ZooBank" docVersion="7" id="E8A0151ADE0F532CA16E0710F6F2BC50" lastPageNumber="91" masterDocId="E8A0151ADE0F532CA16E0710F6F2BC50" masterDocTitle="Two new species of the genus Caligus (Crustacea, Copepoda, Siphonostomatoida) from the Sea of Japan, with a note on the establishment of a new species group" masterLastPageNumber="113" masterPageNumber="91" pageNumber="91" updateTime="1732848802802" updateUser="ExternalLinkService">
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<mods:title id="A7EBDF39EFB7916DB092ED74C056277E">Two new species of the genus Caligus (Crustacea, Copepoda, Siphonostomatoida) from the Sea of Japan, with a note on the establishment of a new species group</mods:title>
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<mods:namePart id="B3C92F0B3E9235E9E8B4DCA9D305FA42">Ohtsuka, Susumu</mods:namePart>
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<mods:namePart id="30EFC89A0538CF886E24AF1B4A6DDDB5">Boxshall, Geoffrey A.</mods:namePart>
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<mods:number id="40A06AFD7346404E4217253868F1B78A">893</mods:number>
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<mods:classification id="CFEBE856AB9D10FDB8CF306015A9A894">journal article</mods:classification>
<mods:identifier id="54A63B9CD48714BFA4F9FEFC5F1CB767" type="DOI">http://dx.doi.org/10.3897/zookeys.893.46923</mods:identifier>
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<treatment id="92683892B77C558DA1816F3E64493679" ID-GBIF-Taxon="160612156" LSID="urn:lsid:zoobank.org:act:41B191CB-B10D-4015-AC2D-B4407FDBE6D3" httpUri="http://treatment.plazi.org/id/92683892B77C558DA1816F3E64493679" lastPageNumber="91" pageId="0" pageNumber="91" scope_class="Copepoda" scope_family="Caligidae" scope_order="Shiphonostomatoida">
<subSubSection id="0DD177D64E5DC68C89F86E9815D9316E" pageId="0" pageNumber="91" type="nomenclature">
<paragraph id="D1396FB0A2155A9BB275E41A3BE5119E" pageId="0" pageNumber="91">
<taxonomicName id="65B7005C4B7DED22D8B9F3BA0A1FA8D5" ID-CoL="7ZG3V" LSID="92683892-B77C-558D-A181-6F3E64493679" class="Copepoda" family="Caligidae" genus="Caligus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Caligus chinglonglini" order="Siphonostomatoida" pageId="0" pageNumber="91" phylum="Arthropoda" rank="species" species="chinglonglini">Caligus chinglonglini</taxonomicName>
<taxonomicNameLabel id="9D624A19414A7832A6C26F9CCFB3E0B7" pageId="0" pageNumber="91">sp. nov.</taxonomicNameLabel>
<figureCitation id="66CF754F51627F651EDC7E11798A8524" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Figs 1</figureCitation>
,
<figureCitation id="9114CFC466171E65E29C00549AE4A0D9" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Caligus chinglonglini sp. nov., adult male, holotype A leg 1 B leg 2 C outer seta on basis of leg 2 D terminal part of exopod of leg 2, outer knob on segment 3 arrowed E leg 3 F endopod of leg 3 G exopod of leg 3 H leg 4 I terminal processes of leg 4." figureDoi="10.3897/zookeys.893.46923.figure2" httpUri="https://binary.pensoft.net/fig/361320" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure2">2</figureCitation>
,
<figureCitation id="DB8EE730BD9317BDFF5C7A71AFF794B3" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Caligus chinglonglini sp. nov., adult male, holotype A terminal part of leg 4, bifurcate processes arrowed B colony of peritrich ciliates attached along posterior margin of maxilliped corpus C peritrich ciliates attached on posterior margin of maxilliped corpus. Scale bars: in mm." figureDoi="10.3897/zookeys.893.46923.figure3" httpUri="https://binary.pensoft.net/fig/361321" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure3">3</figureCitation>
<tableCitation id="A97FE76512E6CCE7727CD056870AC926" captionStartId="T1" httpUri="http://table.plazi.org/id/668EC51B2C804C66CDE68A04360E158E" pageId="0" pageNumber="91" tableUuid="668EC51B2C804C66CDE68A04360E158E">, Table 1</tableCitation>
</paragraph>
</subSubSection>
<subSubSection id="73D92208F48CCE6FEC5773F7ED6879F5" pageId="0" pageNumber="91" type="type material">
<paragraph id="ADEA0729CAA30520FD682FE58B475635" pageId="0" pageNumber="91">Material examined and type.</paragraph>
<paragraph id="F83EAA8522575987E092EAE9D95E72CE" pageId="0" pageNumber="91">
<emphasis id="D2AB93B3E9CF11B04157ECD5277407CF" bold="true" pageId="0" pageNumber="91">
<emphasis id="EA4FC3ACE4C6179143AE6915DCBED203" italics="true" pageId="0" pageNumber="91">Holotype</emphasis>
.
</emphasis>
Japan • adult ♂; Ashibe Port, Iki Island, Nagasaki Prefecture (
<geoCoordinate id="E66B29453064C1656D6E1D06808841C0" degrees="33" direction="north" minutes="48.544" orientation="latitude" precision="1" value="33.809067">33°48.544'N</geoCoordinate>
,
<geoCoordinate id="84CA3ACB74C2282A8B7A9D338F750D94" degrees="129" direction="east" minutes="45.231" orientation="longitude" precision="1" value="129.75385">129°45.231'E</geoCoordinate>
); night, May 24, 2014; partly dissected and mounted on 1 slide, body in vial (NSMT-Cr 26753); S. Ohtsuka leg.
</paragraph>
</subSubSection>
<subSubSection id="2F377FCCFE45A1AF3089F3AF3B8DF190" pageId="0" pageNumber="91" type="description">
<paragraph id="82FC714FE3AE16E1EE706B661A27A87E" pageId="0" pageNumber="91">Description.</paragraph>
<paragraph id="4C077AF1CE8B85DF3776A1E272B3ED3D" pageId="0" pageNumber="91">
<emphasis id="14C4F1043B1B605C6D892B877D8B405E" bold="true" pageId="0" pageNumber="91">
Male.
<emphasis id="259C756809D31B416BF852C35738A554" italics="true" pageId="0" pageNumber="91">Body</emphasis>
</emphasis>
4.02 mm long. Cephalothorax (
<figureCitation id="CD8A40EC7B0848AAD498BF4F1249F7D2" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1A</figureCitation>
) slightly longer than wide. Pediger 4 (
<figureCitation id="1A386D28E4384EB161495C4D15ED9344" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1A, B</figureCitation>
) incompletely fused to genital complex. Genital complex (
<figureCitation id="9614BF5EFD9BE5E9BF9D18346C202843" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1A, B</figureCitation>
) about 1.1 times wider than long, about 1.2 times longer than abdominal somites combined, produced posterolaterally into 2 knobs representing leg 5 (
<figureCitation id="A4895055E8B12DC5B507D3D1682DC42B" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1C</figureCitation>
), armed with 1 and 2 setae. Paired genital opercula (
<figureCitation id="B18D3E11DF922AA5D8B76BEB7770203A" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1C</figureCitation>
) representing leg 6, each bearing 2 minute unequal setae terminally. Abdomen 2-segmented, second somite ca. 1.7 times longer than first. Caudal ramus (
<figureCitation id="4B3096112D3414722F634BBABCFDA679" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1B</figureCitation>
) furnished with row of fine setules along inner margin; setae II and III located close together subterminally; setae
<normalizedToken id="CA47AD624FB5AD2DE5AB6EEDBCBDF7D6" originalValue="IVVI">IV-VI</normalizedToken>
well developed; seta VII minute, located at inner distal corner.
</paragraph>
<caption id="5C57F09CF6863E346F115EDB4BAAB939" doi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" start="Figure 1" startId="F1">
<paragraph id="33AF4A147CB410C641839E9AB0126DCD" pageId="0" pageNumber="91">
<emphasis id="79EEA13593AE6AB60E8243F05C2C6A4F" bold="true" pageId="0" pageNumber="91">Figure 1.</emphasis>
<taxonomicName id="1136912BB4CCF088D1A60571084CC703" class="Copepoda" family="Caligidae" genus="Caligus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Caligus chinglonglini" order="Siphonostomatoida" pageId="0" pageNumber="91" phylum="Arthropoda" rank="species" species="chinglonglini">
<emphasis id="E8F8CEEAA658CB697650483D2648AFD0" italics="true" pageId="0" pageNumber="91">Caligus chinglonglini</emphasis>
</taxonomicName>
sp. nov., adult male, holotype
<emphasis id="40B79431B457E6FFF7C04BB3EC6E4E90" bold="true" pageId="0" pageNumber="91">A</emphasis>
habitus, dorsal view
<emphasis id="BB2773033183CC1DD38DB3F11D48BBB5" bold="true" pageId="0" pageNumber="91">B</emphasis>
postcephalothoracic trunk, dorsal view
<emphasis id="204E9715026E237E7FF646070ABC7BEC" bold="true" pageId="0" pageNumber="91">C</emphasis>
leg 5 and gonopore on right side, ventral view
<emphasis id="2C26B19312C7283779286EA97E202112" bold="true" pageId="0" pageNumber="91">D</emphasis>
antennule, ventral view
<emphasis id="BBBD27438A104A1A924D7A65508EC39B" bold="true" pageId="0" pageNumber="91">E</emphasis>
antenna
<emphasis id="BAAEDAD4DB325B13869C9EC35D1E2EE7" bold="true" pageId="0" pageNumber="91">F</emphasis>
postantennal process
<emphasis id="F7CC6E5B14F22A0764D27342039F3C11" bold="true" pageId="0" pageNumber="91">G</emphasis>
mandible
<emphasis id="1A75AB1FC40C075CD5C611F278C820EF" bold="true" pageId="0" pageNumber="91">H</emphasis>
maxillule
<emphasis id="D27DBA2332303CAAE30486B4FF349A82" bold="true" pageId="0" pageNumber="91">I</emphasis>
maxilla
<emphasis id="04ACFB154F35764CCEA34B738A97E30C" bold="true" pageId="0" pageNumber="91">J</emphasis>
maxilliped
<emphasis id="262692881C277AD1C1CA4ED43CFD5585" bold="true" pageId="0" pageNumber="91">K</emphasis>
middle process on myxal margin of maxilliped corpus
<emphasis id="315D3BB302175183939A6A2DA40E7931" bold="true" pageId="0" pageNumber="91">L</emphasis>
distal process on myxal margin of maxilliped corpus
<emphasis id="9F48850818C2267AAE613AD49A9BF185" bold="true" pageId="0" pageNumber="91">M</emphasis>
subchela of maxilliped
<emphasis id="980562610381CFFE255709FC38F277A2" bold="true" pageId="0" pageNumber="91">N</emphasis>
sternal furca.
</paragraph>
</caption>
<paragraph id="1E2FEA9CB51CD62D6154CDC54CC8940E" pageId="0" pageNumber="91">
Antennule (
<figureCitation id="F76F807C0594D1578391DB9F276FD000" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1D</figureCitation>
) 2-segmented; proximal segment with 26 setae, distal segment with 11 setae and 2 aesthetascs. Antenna (
<figureCitation id="5F40D141FECAC98BA3604105D1D5D990" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1E</figureCitation>
) 3-segmented; proximal segment unarmed, with adhesion pad distally; middle segment massive, unarmed, with 2 adhesion pads at mid-length and 1 pad terminally; distal segment small, multi-layered flap with 2 small setae proximally. Postantennal process (
<figureCitation id="A7F4642D2BF5812DECE02481C0CA0B7A" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1F</figureCitation>
) moderately curved, with 2 bisensillate papillae proximally plus bisensillate papilla on adjacent ventral cephalothoracic surface. Mandible (
<figureCitation id="13CDE8F41B1AA537D1E2731D4CA711DF" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1G</figureCitation>
) with 11 teeth on margin subterminally. Maxillule (
<figureCitation id="42E3042D36D978833C544FDAC9E42243" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1H</figureCitation>
) represented by anterior papilla with 1 thick and 2 fine setae and posterior dentiform process with rounded prominence subterminally. Maxilla (
<figureCitation id="AD46EA474D10CDE5FC21AA664098EB76" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1I</figureCitation>
) 2-segmented, lacertus (syncoxa) unarmed, brachium (basis) slender, with large hyaline membrane at terminal third, plus long
<taxonomicName id="F57135D5E4C6B91362B2A4ED1D2755E1" lsidName="calamus" pageId="0" pageNumber="91" rank="species" species="calamus">calamus</taxonomicName>
and short cana apically. Maxilliped (
<figureCitation id="2F67D96B3B59FC5AA78C300C441A8CCA" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">
Figs 1
<normalizedToken id="E2F4E0062AE81634916BE33F231FA134" originalValue="JM">J-M</normalizedToken>
</figureCitation>
,
<figureCitation id="7035FC100132986D0DAE05AF4C640D13" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Caligus chinglonglini sp. nov., adult male, holotype A terminal part of leg 4, bifurcate processes arrowed B colony of peritrich ciliates attached along posterior margin of maxilliped corpus C peritrich ciliates attached on posterior margin of maxilliped corpus. Scale bars: in mm." figureDoi="10.3897/zookeys.893.46923.figure3" httpUri="https://binary.pensoft.net/fig/361321" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure3">3B</figureCitation>
) heavily chitinized, 2-segmented; corpus (protopod) massive, with 3 unequal processes along myxal margin, proximal process low, middle process with multiple tips, distal process largest, with irregular, undulating distal margin; shaft (endopod) as long as and incompletely fused to claw to form subchela; barbel located on rounded inner basal process of claw. Sternal furca (
<figureCitation id="C1C4175702787A48971D8BC83BCB11A5" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1N</figureCitation>
) with divergent tines originating close together, rounded at tip.
</paragraph>
<paragraph id="CB7F5886E43252CD8B8D6598E564B697" pageId="0" pageNumber="91">
Armature and elements of legs 1-4 as in Table
<tableCitation id="27788E43FF29FC4EB29E7B5B74717178" captionStartId="T1" httpUri="http://table.plazi.org/id/668EC51B2C804C66CDE68A04360E158E" pageId="0" pageNumber="91" tableUuid="668EC51B2C804C66CDE68A04360E158E">1</tableCitation>
.
<emphasis id="45B3BF9AA5D2E9AD1AD92BDAF35FD0A9" bold="true" italics="true" pageId="0" pageNumber="91">Leg 1</emphasis>
(
<figureCitation id="B4DA5828C1A00CD7E6042AA4AE022E66" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Caligus chinglonglini sp. nov., adult male, holotype A leg 1 B leg 2 C outer seta on basis of leg 2 D terminal part of exopod of leg 2, outer knob on segment 3 arrowed E leg 3 F endopod of leg 3 G exopod of leg 3 H leg 4 I terminal processes of leg 4." figureDoi="10.3897/zookeys.893.46923.figure2" httpUri="https://binary.pensoft.net/fig/361320" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure2">Fig. 2A</figureCitation>
) with massive protopod bearing 1 inner and 1 outer small plumose setae plus bifid setule on outer margin; intercoxal sclerite slender, unornamented; endopod reduced to club-shaped process located near base of exopod; exopod 2-segmented, first segment with row of fine setules along inner margin and 1 naked seta at outer distal corner, second segment with 3 large plumose setae along inner (posterior) margin and 4 elements terminally, middle two of which each bearing accessory process.
<emphasis id="512A522F5CE0BE0EB1BCD6D6B99BFDA3" bold="true" italics="true" pageId="0" pageNumber="91">Leg 2</emphasis>
(
<figureCitation id="0A5AB3225AA6B856A00CF9375E1C3B95" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Caligus chinglonglini sp. nov., adult male, holotype A leg 1 B leg 2 C outer seta on basis of leg 2 D terminal part of exopod of leg 2, outer knob on segment 3 arrowed E leg 3 F endopod of leg 3 G exopod of leg 3 H leg 4 I terminal processes of leg 4." figureDoi="10.3897/zookeys.893.46923.figure2" httpUri="https://binary.pensoft.net/fig/361320" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure2">
Fig. 2
<normalizedToken id="E2576A2336E292C90ADF64D7A9B582E2" originalValue="BD">B-D</normalizedToken>
</figureCitation>
) with intercoxal sclerite ornamented with trapezoidal marginal membrane along posterior margin; coxa with large plumose seta at posterior corner and minute setule on anterior surface; basis ornamented with marginal membrane on both inner and outer edges, bearing 1 minute seta on knob at outer distal corner (
<figureCitation id="C49F8A5EC011DEBC860ACF624EB0AC74" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Caligus chinglonglini sp. nov., adult male, holotype A leg 1 B leg 2 C outer seta on basis of leg 2 D terminal part of exopod of leg 2, outer knob on segment 3 arrowed E leg 3 F endopod of leg 3 G exopod of leg 3 H leg 4 I terminal processes of leg 4." figureDoi="10.3897/zookeys.893.46923.figure2" httpUri="https://binary.pensoft.net/fig/361320" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure2">Fig. 2C</figureCitation>
) plus setule near midpoint of inner margin; endopod 3-segmented, outer margins of second and third segments with dense patches of minute setules; exopod 3-segmented, first segment with long outer spine directed obliquely across surface of second segment, second segment with relatively short outer spine, third segment with small outer knob (arrowed in
<figureCitation id="456C0A792E15393A11D27F3FF8E77DDD" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Caligus chinglonglini sp. nov., adult male, holotype A leg 1 B leg 2 C outer seta on basis of leg 2 D terminal part of exopod of leg 2, outer knob on segment 3 arrowed E leg 3 F endopod of leg 3 G exopod of leg 3 H leg 4 I terminal processes of leg 4." figureDoi="10.3897/zookeys.893.46923.figure2" httpUri="https://binary.pensoft.net/fig/361320" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure2">Fig. 2D</figureCitation>
), 1 reduced outer spine, 1 short terminal spine and 5 plumose setae increasing in size from apical to innermost.
<emphasis id="0CF11279C94CE0AEF04E44AFDCBA1A8A" bold="true" italics="true" pageId="0" pageNumber="91">Leg 3</emphasis>
(
<figureCitation id="14EC272DCF6899DFA2B0BC4049F75A72" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Caligus chinglonglini sp. nov., adult male, holotype A leg 1 B leg 2 C outer seta on basis of leg 2 D terminal part of exopod of leg 2, outer knob on segment 3 arrowed E leg 3 F endopod of leg 3 G exopod of leg 3 H leg 4 I terminal processes of leg 4." figureDoi="10.3897/zookeys.893.46923.figure2" httpUri="https://binary.pensoft.net/fig/361320" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure2">
Fig. 2
<normalizedToken id="4DC6D8B9136080B5F868529FD9C1EB91" originalValue="EG">E-G</normalizedToken>
</figureCitation>
) apron (protopod) without surface processes, bearing well developed inner seta and 1 minute outer seta, plus 2 relatively long setules along posterior margin; outer basal margin of apron undulating; endopod 2-segmented, proximal segment small, with 1 long plumose seta; velum developed, hirsute along free posterior margin; second segment expanded along outer margin (
<figureCitation id="A9FA39E68F09A253FB6B4F8B37C67125" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Caligus chinglonglini sp. nov., adult male, holotype A leg 1 B leg 2 C outer seta on basis of leg 2 D terminal part of exopod of leg 2, outer knob on segment 3 arrowed E leg 3 F endopod of leg 3 G exopod of leg 3 H leg 4 I terminal processes of leg 4." figureDoi="10.3897/zookeys.893.46923.figure2" httpUri="https://binary.pensoft.net/fig/361320" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure2">Fig. 2F</figureCitation>
); exopod 3-segmented (
<figureCitation id="0CA4A74317DBDCA57ABD4E7EFDAB3B14" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Caligus chinglonglini sp. nov., adult male, holotype A leg 1 B leg 2 C outer seta on basis of leg 2 D terminal part of exopod of leg 2, outer knob on segment 3 arrowed E leg 3 F endopod of leg 3 G exopod of leg 3 H leg 4 I terminal processes of leg 4." figureDoi="10.3897/zookeys.893.46923.figure2" httpUri="https://binary.pensoft.net/fig/361320" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure2">Fig. 2G</figureCitation>
), proximal segment small, with slightly curved outer spine not reaching distal border of next segment, middle segment with 1 inner plumose and 1 outer naked seta, third segment with 3 spiniform setae increasing in size distally plus 4 inner setae.
</paragraph>
<caption id="16B79F0771C5DAE717EE7160CD4D5DE9" doi="10.3897/zookeys.893.46923.figure2" httpUri="https://binary.pensoft.net/fig/361320" pageId="0" pageNumber="91" start="Figure 2" startId="F2">
<paragraph id="960F49406C92E7F8D9D4440B3BD63353" pageId="0" pageNumber="91">
<emphasis id="6BC12AACC7A7C921BAD2313DBB8DE138" bold="true" pageId="0" pageNumber="91">Figure 2.</emphasis>
<taxonomicName id="AD33D74B8BCAC30D5A5A189FBD88B64A" class="Copepoda" family="Caligidae" genus="Caligus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Caligus chinglonglini" order="Siphonostomatoida" pageId="0" pageNumber="91" phylum="Arthropoda" rank="species" species="chinglonglini">
<emphasis id="923161675A7AA43C3C77EEC61BA26658" italics="true" pageId="0" pageNumber="91">Caligus chinglonglini</emphasis>
</taxonomicName>
sp. nov., adult male, holotype
<emphasis id="623D4137B6DA366B25BAE08C6413ECE7" bold="true" pageId="0" pageNumber="91">A</emphasis>
leg 1
<emphasis id="30B5D0B6138212CE77271D56BD1ADF20" bold="true" pageId="0" pageNumber="91">B</emphasis>
leg 2
<emphasis id="0497693A378991D05BB6B2201FA93C0C" bold="true" pageId="0" pageNumber="91">C</emphasis>
outer seta on basis of leg 2
<emphasis id="D850348FE3FD9CAC953C3507BC193611" bold="true" pageId="0" pageNumber="91">D</emphasis>
terminal part of exopod of leg 2, outer knob on segment 3 arrowed
<emphasis id="679EADBE58C6B48C11010570967FC936" bold="true" pageId="0" pageNumber="91">E</emphasis>
leg 3
<emphasis id="A355C7F113BC594F40449327C516F7CF" bold="true" pageId="0" pageNumber="91">F</emphasis>
endopod of leg 3
<emphasis id="71A2F65124ED0AA4A6853D32797D506D" bold="true" pageId="0" pageNumber="91">G</emphasis>
exopod of leg 3
<emphasis id="406E201B94F71BB1AA4F1C1EFDD9FEFC" bold="true" pageId="0" pageNumber="91">H</emphasis>
leg 4
<emphasis id="4F9E074E54A49EBFD962FADB2D174C18" bold="true" pageId="0" pageNumber="91">I</emphasis>
terminal processes of leg 4.
</paragraph>
</caption>
<paragraph id="C15F4BA32F1223B23D805866D3CFF6F6" pageId="0" pageNumber="91">
<emphasis id="6EABFEB04221E13413458BD7D58D4786" bold="true" italics="true" pageId="0" pageNumber="91">Leg 4</emphasis>
(
<figureCitation id="6BFB30964333E32CB76348725256ADB8" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Caligus chinglonglini sp. nov., adult male, holotype A leg 1 B leg 2 C outer seta on basis of leg 2 D terminal part of exopod of leg 2, outer knob on segment 3 arrowed E leg 3 F endopod of leg 3 G exopod of leg 3 H leg 4 I terminal processes of leg 4." figureDoi="10.3897/zookeys.893.46923.figure2" httpUri="https://binary.pensoft.net/fig/361320" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure2">Figs 2H, I</figureCitation>
,
<figureCitation id="EAFDD7906A53FE22EBEABE4E43277978" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Caligus chinglonglini sp. nov., adult male, holotype A terminal part of leg 4, bifurcate processes arrowed B colony of peritrich ciliates attached along posterior margin of maxilliped corpus C peritrich ciliates attached on posterior margin of maxilliped corpus. Scale bars: in mm." figureDoi="10.3897/zookeys.893.46923.figure3" httpUri="https://binary.pensoft.net/fig/361321" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure3">3A</figureCitation>
) with protopod bearing low outer prominence at mid-length and minute plumose seta at outer distal corner; exopod distinctly 2-segmented, first exopodal segment with long outer spine almost fused basally to segment and reaching more than half distance to origin of proximalmost outer spine on compound second segment; second segment with 1 terminal and 2 slender spines on distal margin plus lateral spine, plus 2 bifurcate processes terminally; each process complex, with 1 or 3 minute prominences basally (
<figureCitation id="0022D648773D847F689EA0AC27E19664" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Caligus chinglonglini sp. nov., adult male, holotype A leg 1 B leg 2 C outer seta on basis of leg 2 D terminal part of exopod of leg 2, outer knob on segment 3 arrowed E leg 3 F endopod of leg 3 G exopod of leg 3 H leg 4 I terminal processes of leg 4." figureDoi="10.3897/zookeys.893.46923.figure2" httpUri="https://binary.pensoft.net/fig/361320" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure2">Fig. 2I</figureCitation>
).
</paragraph>
<paragraph id="9590F73FE29CFAE42491711A586F6721" pageId="0" pageNumber="91">
<emphasis id="0338566ABA00F475DADAFEB63EEC46A4" bold="true" italics="true" pageId="0" pageNumber="91">Leg 5</emphasis>
(
<figureCitation id="D1A57044B651107AC4478982C6F91C21" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1C</figureCitation>
) represented by 2 small knobs, outer knob bearing protopodal seta, inner knob representing exopod, bearing 2 plumose setae terminally. Leg 6 (
<figureCitation id="3F0F6146601F3B61BB5B55B55636A4D7" captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Caligus chinglonglini sp. nov., adult male, holotype A habitus, dorsal view B postcephalothoracic trunk, dorsal view C leg 5 and gonopore on right side, ventral view D antennule, ventral view E antenna F postantennal process G mandible H maxillule I maxilla J maxilliped K middle process on myxal margin of maxilliped corpus L distal process on myxal margin of maxilliped corpus M subchela of maxilliped N sternal furca." figureDoi="10.3897/zookeys.893.46923.figure1" httpUri="https://binary.pensoft.net/fig/361319" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure1">Fig. 1C</figureCitation>
) consisting of genital operculum, bearing 2 terminal minute setae.
</paragraph>
<paragraph id="E228452A0EA674FE96C3F0A18E6F8ACC" pageId="0" pageNumber="91">
<emphasis id="09E4E952EBB8E9DDF2404BC2A291E7FB" bold="true" pageId="0" pageNumber="91">Female.</emphasis>
Unknown.
</paragraph>
</subSubSection>
<subSubSection id="A4E580BB92DF4B6A052FDF57EDF7566F" pageId="0" pageNumber="91" type="remarks">
<paragraph id="C2B659246DFDBCEC08B6EDEE384569CD" pageId="0" pageNumber="91">Remarks.</paragraph>
<paragraph id="F38AEFAFDB5032174CCF479A6AAB2835" pageId="0" pageNumber="91">
The new species is most closely related to
<taxonomicName id="1EB9F45BB4ABD51F52AF421B3F5A5210" lsidName="C. acanthopagri" pageId="0" pageNumber="91" rank="species" species="acanthopagri">
<emphasis id="9DBAD68A1144E87345698C20B3FEB976" italics="true" pageId="0" pageNumber="91">C. acanthopagri</emphasis>
</taxonomicName>
Ho, Lin &amp; Chen, 1994,
<taxonomicName id="E01C8A4A71252F8BFC078C523643FC14" lsidName="C. dieuzeidei" pageId="0" pageNumber="91" rank="species" species="dieuzeidei">
<emphasis id="C5E2279983D1DCA2221CA4E1F7461F71" italics="true" pageId="0" pageNumber="91">C. dieuzeidei</emphasis>
</taxonomicName>
sensu
<bibRefCitation id="A3AB6E9B68C24866AC376FD6DF6F3520" DOI="https://doi.org/10.2331/suisan.20.268" author="Shiino, SM" journalOrPublisher="Bulletin of the Japanese Society of Scientific Fisheries" pageId="0" pageNumber="91" pagination="268 - 272" refId="B34" refString="Shiino, SM, 1954b. Record on Caligusdieuzeidei Brian newly found in Japan. Bulletin of the Japanese Society of Scientific Fisheries 20: 268 - 272" title="Record on Caligusdieuzeidei Brian newly found in Japan." url="https://doi.org/10.2331/suisan.20.268" volume="20" year="1954 b">Shiino (1954b)</bibRefCitation>
, and
<taxonomicName id="C25563F3AB6BD3101AC5D61277CBC353" lsidName="C. latigenitalis" pageId="0" pageNumber="91" rank="species" species="latigenitalis">
<emphasis id="618C7C33F8DF0C35F8E1442F858AD5CC" italics="true" pageId="0" pageNumber="91">C. latigenitalis</emphasis>
</taxonomicName>
Shiino, 1954 in general appearance and in the structure of the appendages and sternal furca. As
<bibRefCitation id="880FC39BC0C2FCCB10D112F6D2F9C798" DOI="https://doi.org/10.1163/156854000505047" author="Izawa, K" journalOrPublisher="Crustaceana" pageId="0" pageNumber="91" pagination="995 - 1005" refId="B21" refString="Izawa, K, Choi, KH, 2000. Redescription of Caliguslatigenitalis Shiino, 1954 (Copepoda, Siphonostomatoida, Caligidae), parasitic on Japanese black sea bream, Acanthopagrusschlegeli (Bleeker, 1854). Crustaceana 73: 995 - 1005" title="Redescription of Caliguslatigenitalis Shiino, 1954 (Copepoda, Siphonostomatoida, Caligidae), parasitic on Japanese black sea bream, Acanthopagrusschlegeli (Bleeker, 1854)." url="https://doi.org/10.1163/156854000505047" volume="73" year="2000">Izawa and Choi (2000)</bibRefCitation>
and
<bibRefCitation id="F9E2D60DD8F8A23A16808A4CBD32A7F3" author="Ho, JS" journalOrPublisher="The Sueichan Press, Keelung" pageId="0" pageNumber="91" refId="B19" refString="Ho, JS, Lin, CL, 2004b. Sea Lice of Taiwan (Copepoda: Siphonostomatoida: Caligidae). The Sueichan Press, Keelung" title="Sea Lice of Taiwan (Copepoda: Siphonostomatoida: Caligidae)." year="2004 b">Ho and Lin (2004b)</bibRefCitation>
suggested, the minor but most distinct difference can be found in the structure of the pectens of the second exopod segment of leg 4 among these three species. Those of
<taxonomicName id="889FA4D31F154516C3054DE934BC8552" lsidName="C. chinglonglini" pageId="0" pageNumber="91" rank="species" species="chinglonglini">
<emphasis id="E6F04FF4B0AF7AA297D164EB941A2DCA" italics="true" pageId="0" pageNumber="91">C. chinglonglini</emphasis>
</taxonomicName>
sp. nov.,
<taxonomicName id="0AA146F00FDADA5C50BB7D85CF76D9FA" lsidName="C. dieuzeidei" pageId="0" pageNumber="91" rank="species" species="dieuzeidei">
<emphasis id="BA7EE0059E8E57561A024C5B2CAD0B60" italics="true" pageId="0" pageNumber="91">C. dieuzeidei</emphasis>
</taxonomicName>
sensu
<bibRefCitation id="105F33B74F9CDBB7A3E6CA92748A19A0" DOI="https://doi.org/10.2331/suisan.20.268" author="Shiino, SM" journalOrPublisher="Bulletin of the Japanese Society of Scientific Fisheries" pageId="0" pageNumber="91" pagination="268 - 272" refId="B34" refString="Shiino, SM, 1954b. Record on Caligusdieuzeidei Brian newly found in Japan. Bulletin of the Japanese Society of Scientific Fisheries 20: 268 - 272" title="Record on Caligusdieuzeidei Brian newly found in Japan." url="https://doi.org/10.2331/suisan.20.268" volume="20" year="1954 b">Shiino (1954b)</bibRefCitation>
(see Discussion), and
<taxonomicName id="78244198BCEB0D470B5641C3467D78BA" lsidName="C. latigenitalis" pageId="0" pageNumber="91" rank="species" species="latigenitalis">
<emphasis id="AD97B3A15A0DACE039BFA066D2BD2AD1" italics="true" pageId="0" pageNumber="91">C. latigenitalis</emphasis>
</taxonomicName>
are sharply indented, whereas that of
<taxonomicName id="43A76F6648FCC6C2C71E577BF5ABD14A" lsidName="C. acanthopagri" pageId="0" pageNumber="91" rank="species" species="acanthopagri">
<emphasis id="2BF4582FF07875DA5EE1117232AEBF64" italics="true" pageId="0" pageNumber="91">C. acanthopagri</emphasis>
</taxonomicName>
is composed of a hyaline membrane. The former three species can be distinguished by the number and shape of dentate processes (divided into 3 or 5 prominences but not hand-like in
<taxonomicName id="DB33FA1C9893DA136DFCE7D34E6D2150" lsidName="C. chinglonglini" pageId="0" pageNumber="91" rank="species" species="chinglonglini">
<emphasis id="D792A3104613B34C7C1125668647291F" italics="true" pageId="0" pageNumber="91">C. chinglonglini</emphasis>
</taxonomicName>
; 3 or 4 and hand-like in
<taxonomicName id="5AEF2FE9081A19AFD89FE8F20468B557" lsidName="C. dieuzeidei" pageId="0" pageNumber="91" rank="species" species="dieuzeidei">
<emphasis id="CFFFD0D3C9A6D7F531D39C5C5B2D38EC" italics="true" pageId="0" pageNumber="91">C. dieuzeidei</emphasis>
</taxonomicName>
sensu Shiino; 4 or 5 and hand-like in
<taxonomicName id="A385CA003B80E6CDC97EEB8F063E82ED" lsidName="C. latigenitalis" pageId="0" pageNumber="91" rank="species" species="latigenitalis">
<emphasis id="C9D27607DA6A0053AFAEA056926DC9C4" italics="true" pageId="0" pageNumber="91">C. latigenitalis</emphasis>
</taxonomicName>
). In addition, the shape and numbers of processes of the maxillipedal myxal area differ among the males of these three species. In
<taxonomicName id="2AB7E6C25E1470A1F48E4DC39995E17F" lsidName="C. chinglonglini" pageId="0" pageNumber="91" rank="species" species="chinglonglini">
<emphasis id="E6FB4628B5ADAC937F9FD0CC463DE051" italics="true" pageId="0" pageNumber="91">C. chinglonglini</emphasis>
</taxonomicName>
sp. nov. and
<taxonomicName id="7CF160E9FB6F1893C7EC9ACAA017B82C" lsidName="C. latigenitalis" pageId="0" pageNumber="91" rank="species" species="latigenitalis">
<emphasis id="20189787DD70FF98F28CDB2FB8BF9F84" italics="true" pageId="0" pageNumber="91">C. latigenitalis</emphasis>
</taxonomicName>
, there are 3 processes arrayed along the myxal margin, but the middle process is furnished with serrated tips in the former but is rounded in the latter. In
<taxonomicName id="EFD703AEF1507B79759997D38573A0A7" lsidName="C. dieuzeidei" pageId="0" pageNumber="91" rank="species" species="dieuzeidei">
<emphasis id="BEC22435781002E7ADB5207BCBC69232" italics="true" pageId="0" pageNumber="91">C. dieuzeidei</emphasis>
</taxonomicName>
sensu
<bibRefCitation id="68E687ED28DE6FADD926E7BB818FC9A9" DOI="https://doi.org/10.2331/suisan.20.268" author="Shiino, SM" journalOrPublisher="Bulletin of the Japanese Society of Scientific Fisheries" pageId="0" pageNumber="91" pagination="268 - 272" refId="B34" refString="Shiino, SM, 1954b. Record on Caligusdieuzeidei Brian newly found in Japan. Bulletin of the Japanese Society of Scientific Fisheries 20: 268 - 272" title="Record on Caligusdieuzeidei Brian newly found in Japan." url="https://doi.org/10.2331/suisan.20.268" volume="20" year="1954 b">Shiino (1954b)</bibRefCitation>
, there are only two processes, one quadrangular and the other low triangular, present along the margin.
</paragraph>
<paragraph id="05DB1BFBFA819FD5BE227DCB56627F0D" pageId="0" pageNumber="91">
Although the present new species is described on the basis of a single male, no other species belonging to the newly proposed
<taxonomicName id="30CB5A366528988581DDA07E532C58EE" lsidName="pseudorhombi" pageId="0" pageNumber="91" rank="species" species="pseudorhombi">
<emphasis id="1B6AA8FB42391446F0917F4112D81484" italics="true" pageId="0" pageNumber="91">pseudorhombi</emphasis>
</taxonomicName>
species group (see Discussion) has so far been recorded from Japanese waters except for
<taxonomicName id="658A834203FAC823532681D8698FB597" lsidName="C. latigenitalis" pageId="0" pageNumber="91" rank="species" species="latigenitalis">
<emphasis id="02CDE68D52B7C90BFC5AE02180A80EC0" italics="true" pageId="0" pageNumber="91">C. latigenitalis</emphasis>
</taxonomicName>
(
<bibRefCitation id="316D5B22F3766F9CF207C095BC13E43F" author="Nagasawa, K" journalOrPublisher="Bulletin of the Biogeographical Society of Japan" pageId="0" pageNumber="91" pagination="103 - 122" refId="B27" refString="Nagasawa, K, Uyeno, D, Tang, D, 2010. A checklist of copepods of the genus Caligus (Siphonostomatoida, Caligidae) from fishes in Japanese waters. Bulletin of the Biogeographical Society of Japan 65: 103 - 122" title="A checklist of copepods of the genus Caligus (Siphonostomatoida, Caligidae) from fishes in Japanese waters." volume="65" year="2010">Nagasawa et al. 2010</bibRefCitation>
) in which only females were originally described by
<bibRefCitation id="73FCB469C1FDED4F0B71B7FFA043A96A" DOI="https://doi.org/10.2331/suisan.20.21" author="Shiino, SM" journalOrPublisher="Bulletin of the Japanese Society of Scientific Fisheries" pageId="0" pageNumber="91" pagination="21 - 25" refId="B33" refString="Shiino, SM, 1954a. On Caliguslatigenitalis sp. nov., a copepod parasite on the fish, Sparusmicrocephalus (Basilewsky). Bulletin of the Japanese Society of Scientific Fisheries 20: 21 - 25" title="On Caliguslatigenitalis sp. nov., a copepod parasite on the fish, Sparusmicrocephalus (Basilewsky)." url="https://doi.org/10.2331/suisan.20.21" volume="20" year="1954 a">Shiino (1954a)</bibRefCitation>
and subsequently both sexes were redescribed in detail by
<bibRefCitation id="71BD2746D679909429D8C325AC4ECA9A" DOI="https://doi.org/10.1163/156854000505047" author="Izawa, K" journalOrPublisher="Crustaceana" pageId="0" pageNumber="91" pagination="995 - 1005" refId="B21" refString="Izawa, K, Choi, KH, 2000. Redescription of Caliguslatigenitalis Shiino, 1954 (Copepoda, Siphonostomatoida, Caligidae), parasitic on Japanese black sea bream, Acanthopagrusschlegeli (Bleeker, 1854). Crustaceana 73: 995 - 1005" title="Redescription of Caliguslatigenitalis Shiino, 1954 (Copepoda, Siphonostomatoida, Caligidae), parasitic on Japanese black sea bream, Acanthopagrusschlegeli (Bleeker, 1854)." url="https://doi.org/10.1163/156854000505047" volume="73" year="2000">Izawa and Choi (2000)</bibRefCitation>
. These two species are distinguishable as mentioned above. In addition,
<taxonomicName id="59FFD4A3E9F4DE60D59750009C816402" lsidName="C. bifurcus" pageId="0" pageNumber="91" rank="species" species="bifurcus">
<emphasis id="59B80BBE7598BD7EA2F61BEDFC7E69CD" italics="true" pageId="0" pageNumber="91">C. bifurcus</emphasis>
</taxonomicName>
Shen, 1958, assigned to the same species group was described from Chinese waters based only on two females, but the non-sexually dimorphic characteristics such as sternal furca and legs differ distinctly from those of
<taxonomicName id="E9D9164B45F5F4C220D0DC1F4CE22E55" lsidName="C. chinglonglini" pageId="0" pageNumber="91" rank="species" species="chinglonglini">
<emphasis id="275E1127BA1256B1E98D6B996F1DAA47" italics="true" pageId="0" pageNumber="91">C. chinglonglini</emphasis>
</taxonomicName>
sp. nov. Therefore, the establishment of the present new species is justified.
</paragraph>
<paragraph id="D8FA16304C2619E97237924D86D6D46D" pageId="0" pageNumber="91">
The new species is the fourth species of
<taxonomicName id="6C25A6663054487325C6175071897BA6" class="Copepoda" family="Caligidae" genus="Caligus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Caligus" order="Siphonostomatoida" pageId="0" pageNumber="91" phylum="Arthropoda" rank="genus">
<emphasis id="4BFB2DD621B48DF8A0826A5CF334802E" italics="true" pageId="0" pageNumber="91">Caligus</emphasis>
</taxonomicName>
found exclusively from plankton samples in Japan (see
<bibRefCitation id="E40EACBDFA4C72A57D2538CB90723B17" DOI="https://doi.org/10.11646/zootaxa.4174.1.27" author="Venmathi Maran, BA" journalOrPublisher="Zootaxa" pageId="0" pageNumber="91" pagination="437 - 447" refId="B47" refString="Venmathi Maran, BA, Suarez-Morales, E, Ohtsuka, S, Soh, HY, Hwang, UW, 2016. On the occurrence of caligids (Copepoda: Siphonostomatoida) in the marine plankton: a review and checklist. Zootaxa 4174: 437 - 447" title="On the occurrence of caligids (Copepoda: Siphonostomatoida) in the marine plankton: a review and checklist." url="https://doi.org/10.11646/zootaxa.4174.1.27" volume="4174" year="2016">Venmathi Maran et al. 2016</bibRefCitation>
, table 2).
</paragraph>
<paragraph id="F29AB2A742C20D3B453C7F993D8D090E" pageId="0" pageNumber="91">
Peritrich ciliates were attached along the posterior margin of both maxillipeds (
<figureCitation id="59C80A25E5CF440FBE1615041E949AC8" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Caligus chinglonglini sp. nov., adult male, holotype A terminal part of leg 4, bifurcate processes arrowed B colony of peritrich ciliates attached along posterior margin of maxilliped corpus C peritrich ciliates attached on posterior margin of maxilliped corpus. Scale bars: in mm." figureDoi="10.3897/zookeys.893.46923.figure3" httpUri="https://binary.pensoft.net/fig/361321" pageId="0" pageNumber="91" tableDoi="10.3897/zookeys.893.46923.figure3">Fig. 3B, C</figureCitation>
) and on the ventral side of the cephalothorax. Epibiont suctorian and peritrich ciliates have already been recorded from species of
<taxonomicName id="45AE65C7386386DBAE6FBBAD7A78D9D2" class="Copepoda" family="Caligidae" genus="Caligus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Caligus" order="Siphonostomatoida" pageId="0" pageNumber="91" phylum="Arthropoda" rank="genus">
<emphasis id="6F1C3E922289BCC038647A5AFB1CC99D" italics="true" pageId="0" pageNumber="91">Caligus</emphasis>
</taxonomicName>
and
<taxonomicName id="667C5C56374223D2754B476E3CF4EC77" class="Copepoda" family="Caligidae" genus="Lepeophtheirus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Lepeophtheirus" order="Siphonostomatoida" pageId="0" pageNumber="91" phylum="Arthropoda" rank="genus">
<emphasis id="1911A0AA50D514A1ACDACA7342D0FAA5" italics="true" pageId="0" pageNumber="91">Lepeophtheirus</emphasis>
</taxonomicName>
von Nordmann, 1832 (
<bibRefCitation id="0AB317E8B8073F4C9DD9B9A98C1BF092" author="Stone, J" journalOrPublisher="Bulletin of European Association of Fish Pathology" pageId="0" pageNumber="91" pagination="113 - 115" refId="B40" refString="Stone, J, Bruno, DW, 1989. A report on Ephelota sp., a suctorian found on the sea lice, Lepeophtheirussalmonis and Caliguselongates. Bulletin of European Association of Fish Pathology 9: 113 - 115" title="A report on Ephelota sp., a suctorian found on the sea lice, Lepeophtheirussalmonis and Caliguselongates." volume="9" year="1989">Stone and Bruno 1989</bibRefCitation>
;
<bibRefCitation id="C2A8A0E05BE16F474C6D9154AAA9BAB1" author="Gresty, KA" editor="Boxshall, GA" journalOrPublisher="Journal of Natural History" pageId="0" pageNumber="91" refId="B12" refString="Gresty, KA, Warren, A, Boxshall, GA, Defaye, D, 1993. Incidence of ciliate epibionts on Lepeophtheirussalmonis from salmon in Japan and Scotland: a scanning electron microscopic study. In: BoxshallGADefayeD (Eds) Pathogens of Wild and Farmed Fish: Sea Lice.Ellis Horwood Limited, West Sussex, 356-363." title="Incidence of ciliate epibionts on Lepeophtheirussalmonis from salmon in Japan and Scotland: a scanning electron microscopic study. In: BoxshallGADefayeD (Eds) Pathogens of Wild and Farmed Fish: Sea Lice. Ellis Horwood Limited, West Sussex, 356 - 363." year="1993">Gresty and Warren 1993</bibRefCitation>
;
<bibRefCitation id="B2EEF94830ADC5B5CF8B300D763356C2" DOI="https://doi.org/10.1080/00222930400001525" author="Fernandez-Leborans, G" journalOrPublisher="Journal of Natural History" pageId="0" pageNumber="91" pagination="587 - 596" refId="B11" refString="Fernandez-Leborans, G, Freeman, M, Gabilondo, R, Sommerville, C, 2005. Marine protozoan epibionts on the copepod Lepeophtheirussalmonis, parasite of the Atlantic salmon. Journal of Natural History 39: 587 - 596" title="Marine protozoan epibionts on the copepod Lepeophtheirussalmonis, parasite of the Atlantic salmon." url="https://doi.org/10.1080/00222930400001525" volume="39" year="2005">Fernandez-Leborans et al. 2005</bibRefCitation>
). In
<taxonomicName id="88D625E2F60054B4C9CAE1AFC7F1D57E" lsidName="L. salmonis" pageId="0" pageNumber="91" rank="species" species="salmonis">
<emphasis id="2B901EF42BB3C8C76FC2F8701025F5C5" italics="true" pageId="0" pageNumber="91">L. salmonis</emphasis>
</taxonomicName>
(
<normalizedToken id="A31F2D452938BAEF59CAB82A07C0C883" originalValue="Krøyer">Kroyer</normalizedToken>
, 1837) collected from Hokkaido, Japan, the peritrich
<taxonomicName id="4EEE0586BD9030D2F34061AD5016DCB1" class="Oligohymenophorea" family="Epistylididae" genus="Epistylis" higherTaxonomySource="CoL" kingdom="Chromista" lsidName="Epistylis" order="Peritrichida" pageId="0" pageNumber="91" phylum="Ciliophora" rank="genus">
<emphasis id="529F828C0664F8924A951E93FD62D9F8" italics="true" pageId="0" pageNumber="91">Epistylis</emphasis>
</taxonomicName>
sp. attached mainly to the antennae and legs 2 and 3. This is the first record of the occurrence of epibiont peritrich ciliates on &quot;pelagic caligids&quot; (
<bibRefCitation id="28D8DEA5AECF1DF741880F7623D778D4" DOI="https://doi.org/10.1163/156854003773123438" author="Ho, JS" journalOrPublisher="Zoological Science" pageId="0" pageNumber="91" refId="B18" refString="Ho, JS, Lin, CL, 2004a. .https://doi.org/10.1163/156854003773123438" url="https://doi.org/10.1163/156854003773123438" year="2004 a">Ho and Lin 2004a</bibRefCitation>
;
<bibRefCitation id="917ACC60DA38E2F2F33C6FAE8CBBFA6A" DOI="https://doi.org/10.3800/pbr.3.202" author="Venmathi Maran, BA" journalOrPublisher="Zoological Studies" pageId="0" pageNumber="91" refId="B44" refString="Venmathi Maran, BA, Ohtsuka, S, 2008. .https://doi.org/10.3800/pbr.3.202" url="https://doi.org/10.3800/pbr.3.202" year="2008">Venmathi Maran and Ohtsuka 2008</bibRefCitation>
;
<bibRefCitation id="B5DB68F8853225615AE817B159227912" DOI="https://doi.org/10.12782/sd.17.1.087" author="Venmathi Maran, BA" journalOrPublisher="Species Diversity" pageId="0" pageNumber="91" pagination="87 - 95" refId="B45" refString="Venmathi Maran, BA, Ohtsuka, S, Jitchum, P, 2012a. Occurrence of caligid copepods (Crustacea) in plankton samples collected from Japan and Thailand, with the description of a new species. Species Diversity 17: 87 - 95" title="Occurrence of caligid copepods (Crustacea) in plankton samples collected from Japan and Thailand, with the description of a new species." url="https://doi.org/10.12782/sd.17.1.087" volume="17" year="2012 a">Venmathi Maran et al. 2012a</bibRefCitation>
,
<bibRefCitation id="672515175FA9BE6DFEF7530B63BE8BA1" DOI="https://doi.org/10.12782/sd.17.2.201" author="Venmathi Maran, BA" journalOrPublisher="Species Diversity" pageId="0" pageNumber="91" pagination="201 - 219" refId="B46" refString="Venmathi Maran, BA, Ohtsuka, S, Shang, X, 2012b. Records of adult caligiform copepods (Crustacea: Copepoda: Siphonostomatoida) in marine plankton from East Asia, including descriptions of two new species of Caligus (Caligidae). Species Diversity 17: 201 - 219" title="Records of adult caligiform copepods (Crustacea: Copepoda: Siphonostomatoida) in marine plankton from East Asia, including descriptions of two new species of Caligus (Caligidae)." url="https://doi.org/10.12782/sd.17.2.201" volume="17" year="2012 b">b</bibRefCitation>
,
<bibRefCitation id="7DF4BC9E0C39985ABE47ADCD202D215A" DOI="https://doi.org/10.11646/zootaxa.4174.1.27" author="Venmathi Maran, BA" journalOrPublisher="Zootaxa" pageId="0" pageNumber="91" pagination="437 - 447" refId="B47" refString="Venmathi Maran, BA, Suarez-Morales, E, Ohtsuka, S, Soh, HY, Hwang, UW, 2016. On the occurrence of caligids (Copepoda: Siphonostomatoida) in the marine plankton: a review and checklist. Zootaxa 4174: 437 - 447" title="On the occurrence of caligids (Copepoda: Siphonostomatoida) in the marine plankton: a review and checklist." url="https://doi.org/10.11646/zootaxa.4174.1.27" volume="4174" year="2016">2016</bibRefCitation>
).
</paragraph>
<caption id="DC21A7FCC1085E7D1E55C0FB4ACF2C27" doi="10.3897/zookeys.893.46923.figure3" httpUri="https://binary.pensoft.net/fig/361321" pageId="0" pageNumber="91" start="Figure 3" startId="F3">
<paragraph id="00C6C56BB39354E046125DA3CCCA6527" pageId="0" pageNumber="91">
<emphasis id="21068026CC2617E3B86DBAFABCD15C82" bold="true" pageId="0" pageNumber="91">Figure 3.</emphasis>
<taxonomicName id="B3A62C339F0CC6AAB90970682975738A" class="Copepoda" family="Caligidae" genus="Caligus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Caligus chinglonglini" order="Siphonostomatoida" pageId="0" pageNumber="91" phylum="Arthropoda" rank="species" species="chinglonglini">
<emphasis id="FE8BBF368D7F4A0DEFCC025A49D4BA88" italics="true" pageId="0" pageNumber="91">Caligus chinglonglini</emphasis>
</taxonomicName>
sp. nov., adult male, holotype
<emphasis id="40FA55C883CC1DDD4AC413750F88F001" bold="true" pageId="0" pageNumber="91">A</emphasis>
terminal part of leg 4, bifurcate processes arrowed
<emphasis id="310708B4A010EAEDD81CAE90EAAC0ED6" bold="true" pageId="0" pageNumber="91">B</emphasis>
colony of peritrich ciliates attached along posterior margin of maxilliped corpus
<emphasis id="B1666E07D2401315CE8B7C1EB79FCFD7" bold="true" pageId="0" pageNumber="91">C</emphasis>
peritrich ciliates attached on posterior margin of maxilliped corpus. Scale bars: in mm.
</paragraph>
</caption>
<caption id="668EC51B2C804C66CDE68A04360E158E" ID-Table-UUID="668EC51B2C804C66CDE68A04360E158E" httpUri="http://table.plazi.org/id/668EC51B2C804C66CDE68A04360E158E" pageId="0" pageNumber="91" start="Table 1" startId="T1">
<paragraph id="9EDBC9C92344EF7ED7B6C72F9E2D0151" pageId="0" pageNumber="91">
<emphasis id="FDF23D4CA084428DE2BE12D43C2F49D0" bold="true" pageId="0" pageNumber="91">Table 1.</emphasis>
Armature and elements of legs 1 to 4 of
<taxonomicName id="C1BB768FF9D81BAB3A0D778920239C6E" class="Copepoda" family="Caligidae" genus="Caligus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Caligus chinglonglini" order="Siphonostomatoida" pageId="0" pageNumber="91" phylum="Arthropoda" rank="species" species="chinglonglini">
<emphasis id="53C54D484FFE6CBA6149DE935AE82557" italics="true" pageId="0" pageNumber="91">Caligus chinglonglini</emphasis>
</taxonomicName>
sp. nov.
</paragraph>
</caption>
<paragraph id="D2611DE72F6A9EB5901DBC1A5C23B60D" pageId="0" pageNumber="91">
<table id="ED183C07504B35D875C7737AB3C292E3" pageId="0" pageNumber="91">
<tr id="46178C89346F31C5D19019949FA1A605" pageId="0" pageNumber="91">
<th id="A48110547B0BE16FC0975BCAEACA7571" colspan="1" isEmpty="true" pageId="0" pageNumber="91" rowspan="1">-</th>
<th id="48FE37CCBE2241D5FF6B5EA9D64D440C" colspan="1" pageId="0" pageNumber="91" rowspan="1">Protopod (coxa; basis)</th>
<th id="1AD63BCE9F20471C0EC14DA03C1DE1F1" colspan="1" pageId="0" pageNumber="91" rowspan="1">Endopod</th>
<th id="8CDF1DFF26B74C5D0D0D4E203FE6C8BE" colspan="1" pageId="0" pageNumber="91" rowspan="1">Exopod</th>
</tr>
<tr id="A97F2AA01159CE0E125897AAD88175BF" pageId="0" pageNumber="91">
<td id="BD99156B48F0770781ED4AA5F2DBC7C0" colspan="1" pageId="0" pageNumber="91" rowspan="1">Leg 1</td>
<td id="3D5D48C43FF8BE9387E16A02C2B6CCB0" colspan="1" pageId="0" pageNumber="91" rowspan="1">1-1</td>
<td id="45F2C2018456EB49049A12FA5BA31455" colspan="1" pageId="0" pageNumber="91" rowspan="1">(vestigial)</td>
<td id="AF55C0A88A994BB17CCA6D7BBB1C2EC6" colspan="1" pageId="0" pageNumber="91" rowspan="1">1-0; III, 1, 3</td>
</tr>
<tr id="F9FFA1D06478DAE24098D6F4029A7670" pageId="0" pageNumber="91">
<td id="842C7C09CFBF5499E0DF78A7BF05A6CD" colspan="1" pageId="0" pageNumber="91" rowspan="1">Leg 2</td>
<td id="5AC0737FCD04F17F35BBD1B6C0FC0A1E" colspan="1" pageId="0" pageNumber="91" rowspan="1">0-1; 1-0</td>
<td id="AA33493BB7C4A1A7ADD0BC8137A139CC" colspan="1" pageId="0" pageNumber="91" rowspan="1">0-1; 0-2; 6</td>
<td id="4C0C5BACABD0A0605A081E18760F863D" colspan="1" pageId="0" pageNumber="91" rowspan="1">I-1; I-1; I, I,5</td>
</tr>
<tr id="2DB229E8DE2DA9FC2DADBDD209991C48" pageId="0" pageNumber="91">
<td id="55C06E4771BDF11E371CBA488D6BE78E" colspan="1" pageId="0" pageNumber="91" rowspan="1">Leg 3</td>
<td id="1D1110463A662EAA2976B04CF6460261" colspan="1" pageId="0" pageNumber="91" rowspan="1">1-1</td>
<td id="C92B80E0D384CC7E6C16EF9AE75E3D14" colspan="1" pageId="0" pageNumber="91" rowspan="1">0-1; 6</td>
<td id="15D08FBD68DD387208A00855FF92E7BA" colspan="1" pageId="0" pageNumber="91" rowspan="1">I-0; I-1; 3, 4</td>
</tr>
<tr id="63C86AEA9364E25E3D019392F48892CE" pageId="0" pageNumber="91">
<td id="333C4601B583451A2AA85886BF76EC3D" colspan="1" pageId="0" pageNumber="91" rowspan="1">Leg 4</td>
<td id="483018EA54B69FB318CCD718158537C4" colspan="1" pageId="0" pageNumber="91" rowspan="1">1-0</td>
<td id="57E801A208B2B15303A4CFE1E42522AF" colspan="1" pageId="0" pageNumber="91" rowspan="1">(absent)</td>
<td id="665B17AABA63DF95BEB998ED8FCADC5E" colspan="1" pageId="0" pageNumber="91" rowspan="1">1-0; I, III</td>
</tr>
</table>
</paragraph>
</subSubSection>
<subSubSection id="0AEEEB121775AC37C4DDEDB941D36E18" pageId="0" pageNumber="91" type="etymology">
<paragraph id="AC217C4B513F446EEC5A7049A8A1461E" pageId="0" pageNumber="91">Etymology.</paragraph>
<paragraph id="61F03519783741559A6A404E2B22CB01" pageId="0" pageNumber="91">The new species is named in honor of the late Dr Ching-long Lin who made a great contribution to the taxonomy of parasitic copepods together with Prof. Ju-shey Ho.</paragraph>
</subSubSection>
</treatment>
</document>