treatments-xml/data/80/A4/1A/80A41A6A38FB5E2184ED1769FD526F7A.xml

1176 lines
113 KiB
XML
Raw Permalink Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<document id="04ACFBC8B2F1006ED9E09BDF7FF68137" ID-DOI="10.3897/zookeys.1219.133132" ID-ZooBank="FEE5F180-FA49-497C-A7C6-AEE122053BCD" ID-publisher-id="133132" URI-arpha="378E57CF-BE01-5821-914E-22AE35C92FF6" URI-zoobank="http://zoobank.org/FEE5F180-FA49-497C-A7C6-AEE122053BCD" XM.bibliography_approvedBy="admin" XM.materialsCitations_approvedBy="admin" XM.treatments_approvedBy="admin" article-type="research-article" checkinTime="1733476549247" checkinUser="pensoft" docAuthor="Boonyanusith, Chaichat, Wongkamhaeng, Koraon &amp; Azman, Abdul-Rahim" docDate="2024" docId="80A41A6A38FB5E2184ED1769FD526F7A" docLanguage="en" docName="ZooKeys 1219: 303-329" docOrigin="ZooKeys 1219" docSource="https://zookeys.pensoft.net/article/133132/download/xml/" docStyle="DocumentStyle:PensoftTaxPub.0000.journal_article.generic" docStyleName="PensoftTaxPub.0000.journal_article.generic" docTitle="Sipadantonius roihani Boonyanusith, Wongkamhaeng &amp; Azman, 2024, sp. nov." docType="treatment" docVersion="3" dtd-version="3.0" lastPageNumber="329" masterDocId="378E57CFBE015821914E22AE35C92FF6" masterDocTitle="Sipadantonius roihani gen. et sp. nov., a new genus and species of Pseudocyclopidae Giesbrecht, 1893 (Copepoda, Calanoida) from the marine cave “ Turtle Tomb ” of Sipadan Island, Sabah, Malaysia" masterLastPageNumber="329" masterPageNumber="303" pageNumber="303" updateTime="1733508841367" updateUser="admin">
<mods:mods id="42BC7B3D910CF9A246303D73895B8F03" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="16DEBAD4F1EECAF4B80E362CCDCA8DAB">
<mods:title id="9AC072A1D9B235DFB1DE0D7915DA3172">Sipadantonius roihani gen. et sp. nov., a new genus and species of Pseudocyclopidae Giesbrecht, 1893 (Copepoda, Calanoida) from the marine cave “ Turtle Tomb ” of Sipadan Island, Sabah, Malaysia</mods:title>
</mods:titleInfo>
<mods:name id="37167EE3ED4550FB65B7CF894AA0F2B0" type="personal">
<mods:role id="F0FD4BDD56A339081EF7268FFC9827E4">
<mods:roleTerm id="9E7FA97778E7BE9173A1BBE5E23F3102">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="8A8700536BAD043A182405A16FAC0CB3">Boonyanusith, Chaichat</mods:namePart>
<mods:nameIdentifier id="E15FC6B812DDF1FFF7BEE16CB6357CE9" type="ORCID">0000-0003-1487-2160</mods:nameIdentifier>
<mods:affiliation id="15A6D8F0550D2DA6D6E25302F0E741F7">School of Biology, Faculty of Science and Technology, Nakhon Ratchasima Rajabhat University, Nakhon Ratchasima 30000, Thailand</mods:affiliation>
</mods:name>
<mods:name id="87D590732ECD77EBDEB0409FB5BF87F1" type="personal">
<mods:role id="755CAF6274A188FC370EF6583D818962">
<mods:roleTerm id="974F7DBD7416625C5D588D63D8D93F45">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="802F5B89C39712B1894E0E23D2990910">Wongkamhaeng, Koraon</mods:namePart>
<mods:nameIdentifier id="F95836C734559C8D672367824AAFFECA" type="ORCID">0000-0001-7671-8869</mods:nameIdentifier>
<mods:affiliation id="BBAF9DFFA0B72BE0718994B2840FFA53">Department of Zoology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand</mods:affiliation>
</mods:name>
<mods:name id="362062AD83555F10A02BF42FB443B3EB" type="personal">
<mods:role id="43CA85C2A857A3ECC2DB56D98EF453CE">
<mods:roleTerm id="7E5B32DA2932BFC6734EA2EFF7C62525">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="E8196AC03427F3328742EDCA9C3FEF00">Azman, Abdul-Rahim</mods:namePart>
<mods:nameIdentifier id="5BECFC3E206A5A57B4278DBB211F1ECE" type="ORCID">0000-0002-8964-6638</mods:nameIdentifier>
<mods:affiliation id="0439DC029E15C45C07DF8250D8D221EE">Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia</mods:affiliation>
</mods:name>
<mods:typeOfResource id="0257053BE1B18F8ECEEADD740E26002B">text</mods:typeOfResource>
<mods:relatedItem id="91299BD4C202E5CD113D7052697F79EC" type="host">
<mods:titleInfo id="0A21B927C3FBD0F362C6D158F15A8EF0">
<mods:title id="0E0F681BF1F6936E8279E577A6801150">ZooKeys</mods:title>
</mods:titleInfo>
<mods:part id="39A84363ECDD441AFAA59313A7E95DF6">
<mods:date id="64F52C031C221B36F0016278D878C8E2">2024</mods:date>
<mods:detail id="CDA5C5BA9CB4ED4565A474C296623EE1" type="pubDate">
<mods:number id="FCF3B7F33D82E97E79DB68E4112F9DC8">2024-12-06</mods:number>
</mods:detail>
<mods:detail id="74CBD5A602BCE6F2F7F46C7EE9045EE9" type="volume">
<mods:number id="7D352ED256ECB5681D6567B874BCFCAA">1219</mods:number>
</mods:detail>
<mods:extent id="2CFF8AE5651837E513F33568817EE884" unit="page">
<mods:start id="8C7F5529ED6BD3B4E3DE07BB377141DE">303</mods:start>
<mods:end id="506C6ACD40911AD8B14456583831DB0D">329</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:classification id="1EA034BEB9F053872B7CBBC873FC0AC9">journal article</mods:classification>
<mods:identifier id="AB4D514E7FC2EC89A03B7774828FDF2D" type="DOI">10.3897/zookeys.1219.133132</mods:identifier>
<mods:identifier id="9630A8D29D5A971416BBD8CA1567C336" type="ZooBank">FEE5F180-FA49-497C-A7C6-AEE122053BCD</mods:identifier>
</mods:mods>
<treatment id="80A41A6A38FB5E2184ED1769FD526F7A" ID-arpha="80A41A6A-38FB-5E21-84ED-1769FD526F7A" ID-zoobank="https://zoobank.org/C38B34EF-2C23-4A8D-9396-616EAD33D82D" LSID="urn:lsid:plazi:treatment:80A41A6A38FB5E2184ED1769FD526F7A" LSID-ZBK="urn:lsid:zoobank.org:act:C38B34EF-2C23-4A8D-9396-616EAD33D82D" httpUri="http://treatment.plazi.org/id/80A41A6A38FB5E2184ED1769FD526F7A" scope_class="Copepoda" scope_family="Pseudocyclopidae" scope_order="Calanoida" scope_superFamily="Pseudocyclopoidea">
<subSubSection id="C29301513A17BFF58C861F78113C5B04" type="nomenclature">
<paragraph id="38B7FED8088784791C3DAE515E6CEAF3">
<taxonomicName id="D8F16B2B47223E23ACEC9D5D1449E8F1" authorityName="Boonyanusith &amp; Wongkamhaeng &amp; Azman" authorityYear="2024" class="Copepoda" family="Pseudocyclopidae" genus="Sipadantonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="species" species="roihani" status="sp. nov.">
<emphasis id="3737D2DEC7BBA6CED24FB68CDF7C5F6E" italics="true">Sipadantonius roihani</emphasis>
</taxonomicName>
<taxonomicNameLabel id="BC953D169D4A9F1254634AE39FA93CAA" rank="species">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection id="EF2681D6C6357D508D512509E51AB101" type="description">
<paragraph id="D261C0D74D2156E1A82B317578918073">
<figureCitation id="EA829EDB7DEFFEB8624348CA9FCD4067" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">Figs 2</figureCitation>
,
<figureCitation id="9CC7551E33D7DBD1E6AAF3F7BA7F2EBA" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Sipadantonius roihani gen. et sp. nov. female: A tip of furcal ramus, dorsal view B tip of furcal ramus, ventral view C antennule D rostrum and segments 117 of antennule E segments 1822 of antennule F segments 2326 of antennule. Roman numerals on antennule correspond to ancestral segments. Scale bars: 50 μm (A, B); 200 μm (C); 100 μm (D-F)." figureDoi="10.3897/zookeys.1219.133132.figure3" httpUri="https://binary.pensoft.net/fig/1191520">3</figureCitation>
,
<figureCitation id="0A2B10ABB3D98F9D3A6412A732EF5175" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Sipadantonius roihani gen. et sp. nov. female: A antenna B mandible C maxillule, with picture of setae on posterior surface of praecoxal arthrite and enlarged picture of coxal endite D maxilla E maxilliped, with enlarged picture of transformed seta. Arrowhead indicates transformed seta on maxilliped. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure4" httpUri="https://binary.pensoft.net/fig/1191521">4</figureCitation>
,
<figureCitation id="D2E8B7E462E2E2AED16E2EC98BF25EF6" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Sipadantonius roihani gen. et sp. nov. female: A P 1 B basis of P 1, posterior surface C P 1 Exp - 2 D P 2 E P 2 Exp- 1, posterior surface F P 3 G lateral margin of basis of P 3 H P 4. Arrowheads indicate the important characteristic of the structure. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure5" httpUri="https://binary.pensoft.net/fig/1191522">5</figureCitation>
,
<figureCitation id="4AD8522D82E47EF632E642692C80AF1E" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Sipadantonius roihani gen. et sp. nov. photographs of lateral surface of basis of swimming legs, female (A-E) and male (F): A posterior hyaline process on basis of P 1 (indicated by arrow) B P 1 C P 3 D P 4 E, F P 5. Arrowheads indicate cuticular windows on lateral margin of basis. Scale bars: 10 μm." figureDoi="10.3897/zookeys.1219.133132.figure6" httpUri="https://binary.pensoft.net/fig/1191523">6 (female); 68 (male</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="SECID0ERGAE" type="material">
<paragraph id="C858E5A6C074841958A81607DB3AE8BC">
<heading id="8CCB66C0918B27499098A4CFD38B4B79" reason="title">Material examined.</heading>
</paragraph>
<paragraph id="D55C7D234767B323F5567B78E62EF07A">
<materialsCitation id="5984E09F24C015736C0EDEBE59DA82AD" collectedFrom="in the cave at a depth of 22.0 meters below the sea surface, ~ 100 meters from the entrance" collectingDate="2023-08-03" collectingMethod="light trap" collectionCode="UKMMZ" collectorName="Azman, B. A. R." country="Malaysia" latitude="4.118" location="marine cave &quot; Turtle Tomb &quot;" longLatPrecision="1" longitude="118.62806" municipality="Sipadan Island" specimenCode="UKMMZ-1631" specimenCount="2" specimenCount-female="1" stateProvince="Sabah" typeStatus="holotype">
<emphasis id="19957713FFD168609F76FAFF72DCBA17" bold="true" italics="true">
<typeStatus id="AACF1892D9C735F972312E7A5AD72834" type="holotype">Holotype</typeStatus>
</emphasis>
<specimenCount id="A9B2C29888BEB3584553B875805D9AB1" count="1" type="female"></specimenCount>
(adult),
<quantity id="832060A366AAF6C9FCC91B1687E81D34" metricMagnitude="-4" metricUnit="m" metricValue="9.5" unit="mm" value="0.95">0.95 mm</quantity>
long;
<date id="569D9604B394B589F892BC0DC1950FAB" value="2023-08-03">
<collectingDate id="87F2D792EE040E6F13FA7531686F5FE1" value="2023-08-03">3 August 2023</collectingDate>
</date>
; coll.
<collectorName id="8987E1DA0FAA490B1AB1B30F87706536">Azman, B. A. R.</collectorName>
;
<collectingMethod id="2CA7A83C564ABF78AF697CB59CEC139D">light trap</collectingMethod>
;
<specimenCode id="F3BD2D807D28E29E642E1006B6CE44FF">
<named-content id="724C6578D3C66E10A73141D0BE0A0677" content-type="dwc:institutional_code" xlink_href="http://grbio.org/institution/universiti-kebangsaan-malaysia" xlink_title="Universiti Kebangsaan Malaysia Muzium Zoologi">UKMMZ</named-content>
-1631
</specimenCode>
</materialsCitation>
.
<materialsCitation id="EFD02B7232C319F47EA8E6B3FE74786E" collectedFrom="in the cave at a depth of 22.0 meters below the sea surface, ~ 100 meters from the entrance" collectingDate="2023-08-03" collectingMethod="light trap" collectionCode="UKMMZ" collectorName="Azman, B. A. R." country="Malaysia" latitude="4.118" location="marine cave &quot; Turtle Tomb &quot;" longLatPrecision="1" longitude="118.62806" municipality="Sipadan Island" specimenCode="UKMMZ-1632" specimenCount="1" specimenCount-male="1" stateProvince="Sabah" typeStatus="allotype">
<emphasis id="5982BB6303C977C5653C4DAF15B1E5D3" bold="true" italics="true">
<typeStatus id="C9849D452084663B4A0F5E8FE81E249B" type="allotype">Allotype</typeStatus>
</emphasis>
<specimenCount id="FC4429C58BCCD1EB890037C64E598364" count="1" type="male"></specimenCount>
(adult),
<quantity id="09637186A11106BBDDF1E201D1307BAA" metricMagnitude="-4" metricUnit="m" metricValue="8.7" unit="mm" value="0.87">0.87 mm</quantity>
long, collection data for holotype;
<specimenCode id="ED21A6ABED799C0F9D3388937C155C66">
<named-content id="9EBA41CF63010A0ED300C789DAD75AAF" content-type="dwc:institutional_code" xlink_href="http://grbio.org/institution/universiti-kebangsaan-malaysia" xlink_title="Universiti Kebangsaan Malaysia Muzium Zoologi">UKMMZ</named-content>
-1632
</specimenCode>
</materialsCitation>
.
<materialsCitation id="A95B0E73A68C86A00977A1C37E8E200B" collectedFrom="in the cave at a depth of 22.0 meters below the sea surface, ~ 100 meters from the entrance" collectingDate="2023-08-03" collectingMethod="light trap" collectionCode="UKMMZ" collectorName="Azman, B. A. R." country="Malaysia" latitude="4.118" location="marine cave &quot; Turtle Tomb &quot;" longLatPrecision="1" longitude="118.62806" municipality="Sipadan Island" specimenCode="UKMMZ-1633" specimenCount="2" specimenCount-female="1" specimenCount-male="1" stateProvince="Sabah" typeStatus="paratype">
<emphasis id="7D4D9CF5E617DA99EA6A8B00BFACB4F7" bold="true" italics="true">
<typeStatus id="A2DDA727FEDC4BFF90471ED857F69176" type="paratype">Paratypes</typeStatus>
</emphasis>
<specimenCount id="1681DAA3BCD3F6D4FDDBE1C6D260F1C5" count="1" type="female">1 ♀</specimenCount>
(adult) and
<specimenCount id="E237BADAD2A6D3F3B1DB8899D0BD4F7C" count="1" type="male">1 ♂</specimenCount>
(adult); each was utterly dissected and mounted on a slide in glycerol and then sealed with nail varnish; the data was identical to that of the holotype;
<specimenCode id="59173A1C8C2DA700500E0E4341410828">
<named-content id="BA67E8E7725ACFFEBC630F9549EA1E9D" content-type="dwc:institutional_code" xlink_href="http://grbio.org/institution/universiti-kebangsaan-malaysia" xlink_title="Universiti Kebangsaan Malaysia Muzium Zoologi">UKMMZ</named-content>
-1633
</specimenCode>
1634
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="SECID0EOHAE" type="material">
<paragraph id="3F978CDC4205A4436CAA7ADF3102B015">
<heading id="2ACFC3412B53B3C788DCF950D4457632" reason="title">Additional material.</heading>
</paragraph>
<paragraph id="B381F106BA1C8BD0185FA376CBE5A40F">
<materialsCitation id="CE8C74FB0586EF3B6CF9A5F988B40ABA" collectedFrom="in the cave at a depth of 22.0 meters below the sea surface, ~ 100 meters from the entrance" collectingDate="2023-08-03" collectingMethod="light trap" collectionCode="UKMMZ" collectorName="Azman, B. A. R." country="Malaysia" latitude="4.118" location="marine cave &quot; Turtle Tomb &quot;" longLatPrecision="1" longitude="118.62806" municipality="Sipadan Island" specimenCount="2" specimenCount-male="2" stateProvince="Sabah">
<specimenCount id="F6526E326F1C41E8ECD6DC415A516E48" count="2" type="male">2 ♂♂</specimenCount>
(adult); the data was identical to that of the
<typeStatus id="0122255F1C86B3E47E3BC5369F7E59D4" type="holotype">holotype</typeStatus>
; preserved in 70 % ethanol, subsequently retained in collection of the Sabah Parks Zoological Collection in Semporna,
<collectingRegion id="1A5E225DA387E799E36FA996744E124B" country="Malaysia" name="Sabah">Sabah</collectingRegion>
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="SECID0ETHAE" type="type locality">
<paragraph id="293EA089D16C08B11C5A819F95BEF193">
<heading id="4B0CBAA81C75CA7E15332394C49C404F" reason="title">Type locality.</heading>
</paragraph>
<paragraph id="341FF24D5AA4033594344C5798B530CD">
The
<location id="7695CCC61E84CC2A48B19FD13C980604" LSID="urn:lsid:plazi:treatment:80A41A6A38FB5E2184ED1769FD526F7A:7695CCC61E84CC2A48B19FD13C980604" country="Malaysia" latitude="4.118" longLatPrecision="1" longitude="118.62806" municipality="Sipadan Island" name="marine cave &quot; Turtle Tomb &quot;" stateProvince="Sabah">marine cave “Turtle Tomb”</location>
,
<collectingMunicipality id="21128AE916BA9E83696A668C9241AAF2">Sipadan Island</collectingMunicipality>
,
<collectingRegion id="D3F1773C67354AA503056F0FF7E082D8" country="Malaysia" name="Sabah">Sabah</collectingRegion>
,
<collectingCountry id="E27BF5CA00187022BB9775ECB3CDECD0" name="Malaysia">Malaysia</collectingCountry>
; the entrance is located at
<named-content content-type="dwc:verbatimCoordinates" id="NCID0E3HAE" specific-use="{&quot;type&quot;:&quot;Point&quot;,&quot;coordinates&quot;:[118.628056,4.118000]}">
<geoCoordinate id="98E0F4ECC8C08EE9A74C28E03A442108" degrees="4" direction="north" minutes="07" orientation="latitude" precision="1" seconds="04.8" value="4.118">4°07'04.8&quot;N</geoCoordinate>
,
<geoCoordinate id="B26AA70C6CD3822A27FCC3B994B4AE53" degrees="118" direction="east" minutes="37" orientation="longitude" precision="1" seconds="41.0" value="118.62806">118°37'41.0&quot;E</geoCoordinate>
</named-content>
. Samples were collected
<collectedFrom id="C7D3EDDDC43DB09062CCD54E4A6909D5">in the cave at a depth of 22.0 meters below the sea surface, ~ 100 meters from the entrance</collectedFrom>
.
</paragraph>
</subSubSection>
<subSubSection id="SECID0EBIAE" type="description">
<paragraph id="90EF50209899D52D89FE49D83C150689">
<heading id="98CF63383BF270066F0C8DC2F8AF834D" reason="title">Description of adult female.</heading>
</paragraph>
<paragraph id="2FF3DF26714999761A81098FC0FB866A">
Body (Fig.
<figureCitation id="E35EA483595A1B8B806B4473881BC3FC" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 A, B</figureCitation>
) with a total length of
<quantity id="F4660FCAF3B3A97BDF39D1F47A7D9C6F" metricMagnitude="-4" metricUnit="m" metricValue="9.299999999999999" metricValueMax="9.5" metricValueMin="9.1" unit="mm" value="0.9299999999999999" valueMax="0.95" valueMin="0.91">0.910.95 mm</quantity>
(measured from anterior margin of cephalosome to tip of furcal rami; mean:
<quantity id="13A001A6D6571E6A750CD3AE4014BA11" metricMagnitude="-4" metricUnit="m" metricValue="9.3" unit="mm" value="0.93">0.93 mm</quantity>
;
<emphasis id="08B8A969691D65A8526DD27B730DFD5D" italics="true">n</emphasis>
= 3), slightly dorsoventrally flattened; integument covered with hair-like spinules. Prosome six-segmented, elliptical, ~ 70 % of body length and 2.2 × as long as urosome, ~ 2.3 × as long as wide, with greatest width at posterior margin of the first pedigerous somite (
<abbrev id="ABBRID0ENIAE" xlink_title="first to sixth swimming legs">P 1</abbrev>
- bearing somite) (Fig.
<figureCitation id="71D4EC0A6EE6B5C6D6A35ED4A292A86E" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 A</figureCitation>
). Cephalosome and all pedigerous somites free, with smooth hyaline frill on posterior margin of cephalosome and first four pedigerous somites (Fig.
<figureCitation id="428733748633E3BB700236DBF43373E2" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 A, B</figureCitation>
); postero-lateral corners symmetrical and rounded (Fig.
<figureCitation id="AA3586CEB4E4E3E5ED362A3A46E27CEA" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 B</figureCitation>
). Naupliar eye not discernible. Urosome four-segmented, comprising genital double-somite, and three free abdominal somites; all somites with finely serrated hyaline frill on posterior margin (Fig.
<figureCitation id="96ED8F9D367CA34389708DA094D57C9B" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 C F</figureCitation>
). Genital double-somite barrel-shaped (Fig.
<figureCitation id="685CB822BA3A4D1EB7488039A342F585" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 E</figureCitation>
), ~ 27 % of urosome length, as long as wide, with greatest width at mid-length of double-somite, with lingual-shaped genital operculum ventromedially; two gonoporal plates triangular-shaped, partially hidden under genital operculum (Fig.
<figureCitation id="CE3DB40D4CD422E4524EB239B5E1DC22" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 E</figureCitation>
). Three free abdominal somites subequal in length. Anal somite with slightly developed anal operculum; posterior margin with serrated hyaline frill dorso-laterally (Fig.
<figureCitation id="6B378F7710ED46AB4E07A0B92F70D2E1" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 F, G</figureCitation>
); anal operculum with smooth free margin, ornamented with row of spinules (Fig.
<figureCitation id="67BC1194512EC1CE36F2DC28153C07E4" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 F</figureCitation>
).
</paragraph>
<caption id="CB17791C0EF7995718F773676D70FBFB" ID-DOI="10.3897/zookeys.1219.133132.figure2" ID-arpha="4800D516-735B-5B04-B6C5-92BC49217131" httpUri="https://binary.pensoft.net/fig/1191519" startId="F2">
<paragraph id="27EB7A8A0B866B54FF60C49DB374F7D5">
<label id="D42BF6B76443AF01D2911753D0C4E353">Figure 2.</label>
</paragraph>
<paragraph id="10D566D4A6E1CA05B369AB2D585D94B0">
<taxonomicName id="3B67E975FC8086D7A5B4D5019C7F16E7" authorityName="Boonyanusith &amp; Wongkamhaeng &amp; Azman" authorityYear="2024" class="Copepoda" family="Epacteriscidae" genus="Sipadantonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="species" species="roihani" status="gen. et sp. nov.">
<emphasis id="716C4C0AB6D8FC8ABE56AE38D5670607" italics="true">Sipadantonius roihani</emphasis>
</taxonomicName>
<taxonomicNameLabel id="B5C0A945CC61D2F540F1C3DEC76C48E0" rank="species">gen. et sp. nov.</taxonomicNameLabel>
female:
<emphasis id="D40556FA3CD782A6F7991FAAA0408759" bold="true">A</emphasis>
habitus, dorsal view
<emphasis id="0C6F45510A5D226DE552FDD39A749960" bold="true">B</emphasis>
habitus, lateral view
<emphasis id="99A7AAA2B195531E455AFB59F5F6F915" bold="true">C</emphasis>
urosome, ventral view
<emphasis id="8ACA5F9B0FE156ABDDC3897635B00160" bold="true">D</emphasis>
urosome, lateral view
<emphasis id="A46661EF7A1B5017CEED34AFE66FEFAF" bold="true">E</emphasis>
genital double-somite, ventral view
<emphasis id="2B96A3FEEB9282EFA266F0AB931E4F00" bold="true">F</emphasis>
furcal rami, dorsal view
<emphasis id="49F2DD73B26628D1B274CC5E095480A7" bold="true">G</emphasis>
furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (
<emphasis id="F9BC3292CD0A0CDE887535D989685A71" bold="true">A, B</emphasis>
); 100 μm (
<emphasis id="D3337BDB5B15E133A1C5D77BE705200C" bold="true">C, D</emphasis>
); 50 μm (
<emphasis id="78013E8EC6E6E8E38CFB74B17FB08A60" bold="true">E-G</emphasis>
).
</paragraph>
</caption>
<paragraph id="EE5CE741B36785B2337F097633296ACF">
Furcal rami (Fig.
<figureCitation id="29B870B9287158528851D6ABFF7DB30F" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 F, G</figureCitation>
) symmetrical, parallel, each ~ 3 × as long as wide, with serrated hyaline frill on distal margin and two cuticular pores laterally (Fig.
<figureCitation id="43F9E7F72AFA417836D6532978D6674F" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 F, G</figureCitation>
); furcal setae I and III absent; furcal seta II spiniform, with setulae along inner margin; seta IV shorter than seta V, with breaking planes and plumose; seta V longest, with breaking plane and plumose, sub-equal to urosome length, ~ 1.2 × as long as seta IV; seta VI plumose, ~ 0.8 × as long as seta V; seta VII very short and plumose, inserted beside seta VI (Fig.
<figureCitation id="5DC710B37008D2473324AA753D557D5A" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Sipadantonius roihani gen. et sp. nov. female: A tip of furcal ramus, dorsal view B tip of furcal ramus, ventral view C antennule D rostrum and segments 117 of antennule E segments 1822 of antennule F segments 2326 of antennule. Roman numerals on antennule correspond to ancestral segments. Scale bars: 50 μm (A, B); 200 μm (C); 100 μm (D-F)." figureDoi="10.3897/zookeys.1219.133132.figure3" httpUri="https://binary.pensoft.net/fig/1191520">3 A</figureCitation>
). Length ratio of furcal setae II to ramus length ~ 0.5 and the ratio of setae to ramus length from seta IV to seta VII: 3.3: 3.9: 3.0: 0.2.
</paragraph>
<caption id="D922B47F538812A0FA38E7AC50EA8CA0" ID-DOI="10.3897/zookeys.1219.133132.figure3" ID-arpha="1DBE109E-2181-5BC2-9000-490B15144DB9" httpUri="https://binary.pensoft.net/fig/1191520" startId="F3">
<paragraph id="4CBF6C2C8B97D54394E34ADFC3ED9AE6">
<label id="B2B49A9353CBB4766E44D48E847C4ACA">Figure 3.</label>
</paragraph>
<paragraph id="E6A0B35B3387B56535B9657D0CB14EEA">
<taxonomicName id="C8D2F3936261CC2886087D6CCD8EE74C" authorityName="Boonyanusith &amp; Wongkamhaeng &amp; Azman" authorityYear="2024" class="Copepoda" family="Epacteriscidae" genus="Sipadantonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="species" species="roihani" status="gen. et sp. nov.">
<emphasis id="4F63E8BCEB57C80AE5EC4B7250B1C6CC" italics="true">Sipadantonius roihani</emphasis>
</taxonomicName>
<taxonomicNameLabel id="817A50EAA92A4DF422558599847F755B" rank="species">gen. et sp. nov.</taxonomicNameLabel>
female:
<emphasis id="352695A41966A3084911B40F85EC9FD2" bold="true">A</emphasis>
tip of furcal ramus, dorsal view
<emphasis id="C92819C6EEAD0137484544474ECA4646" bold="true">B</emphasis>
tip of furcal ramus, ventral view
<emphasis id="7A14EA7ECFEEC70D1FE994C0BCC38B0A" bold="true">C</emphasis>
antennule
<emphasis id="397F1C14F6BEE5CEEF2785EE60C9BF2A" bold="true">D</emphasis>
rostrum and segments 117 of antennule
<emphasis id="B87D76FB6CEBEE593FB1559828876235" bold="true">E</emphasis>
segments 1822 of antennule
<emphasis id="B0234802597A383717D9DF86EC851A96" bold="true">F</emphasis>
segments 2326 of antennule. Roman numerals on antennule correspond to ancestral segments. Scale bars: 50 μm (
<emphasis id="6DBA1D97C4D80982BB6A5F077A38CAD3" bold="true">A, B</emphasis>
); 200 μm (
<emphasis id="9A4B51F3AB02937CB08886E719B44273" bold="true">C</emphasis>
); 100 μm (
<emphasis id="9AC76E00195C6A036695AB065DAB2C56" bold="true">D-F</emphasis>
).
</paragraph>
</caption>
<paragraph id="12D32053D146B0781852D7402420A1B2">
Rostrum (Figs
<figureCitation id="B43502EC8D6EF8EE6A9AEEEA6CA2BE12" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 B</figureCitation>
,
<figureCitation id="B9415B414CAC2414BFB435A35F9AF6B0" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Sipadantonius roihani gen. et sp. nov. female: A tip of furcal ramus, dorsal view B tip of furcal ramus, ventral view C antennule D rostrum and segments 117 of antennule E segments 1822 of antennule F segments 2326 of antennule. Roman numerals on antennule correspond to ancestral segments. Scale bars: 50 μm (A, B); 200 μm (C); 100 μm (D-F)." figureDoi="10.3897/zookeys.1219.133132.figure3" httpUri="https://binary.pensoft.net/fig/1191520">3 D</figureCitation>
) well developed, single plate and V-shaped; base broad, completely fused to anterior margin of cephalic shield and tapering to rounded tip between bases of antennules, with two sensillae, lacking rostral filaments.
</paragraph>
<paragraph id="4A431F93965849F448485F4188ACA643">
Antennules (Figs
<figureCitation id="199ED8B5AB1605CE68DD2F8C8F85A9D6" captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Sipadantonius roihani gen. et sp. nov. female: A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores. Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E-G)." figureDoi="10.3897/zookeys.1219.133132.figure2" httpUri="https://binary.pensoft.net/fig/1191519">2 A</figureCitation>
,
<figureCitation id="EB34296A60AFE9DADABB1B5017C83D4C" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Sipadantonius roihani gen. et sp. nov. female: A tip of furcal ramus, dorsal view B tip of furcal ramus, ventral view C antennule D rostrum and segments 117 of antennule E segments 1822 of antennule F segments 2326 of antennule. Roman numerals on antennule correspond to ancestral segments. Scale bars: 50 μm (A, B); 200 μm (C); 100 μm (D-F)." figureDoi="10.3897/zookeys.1219.133132.figure3" httpUri="https://binary.pensoft.net/fig/1191520">3 C, D</figureCitation>
) symmetrical, representing 26 - segmented, reaching distal margin of urosomite 2; ancestral segments II and III completely fused, representing evident segment II; ancestral segments X XI partly fused, with remnant of ancestral articulation; ultimate segments ~ 1 / 3 of the length of pre-ultimate segment. Armature formula as follows (Roman numerals correspond to ancestral segment): 1 +
<abbrev id="ABBRID0EJNAE" xlink_title="aesthetasc">ae</abbrev>
(I), 2 +
<abbrev id="ABBRID0ENNAE" xlink_title="aesthetasc">ae</abbrev>
(II III), 1 +
<abbrev id="ABBRID0ERNAE" xlink_title="aesthetasc">ae</abbrev>
(IV), 2 +
<abbrev id="ABBRID0EVNAE" xlink_title="aesthetasc">ae</abbrev>
(V), 2 +
<abbrev id="ABBRID0EZNAE" xlink_title="aesthetasc">ae</abbrev>
(VI), 2 +
<abbrev id="ABBRID0E4NAE" xlink_title="aesthetasc">ae</abbrev>
(VII), 2 +
<abbrev id="ABBRID0EBOAE" xlink_title="aesthetasc">ae</abbrev>
(VIII), 2 +
<abbrev id="ABBRID0EFOAE" xlink_title="aesthetasc">ae</abbrev>
(IX), 2 +
<abbrev id="ABBRID0EJOAE" xlink_title="aesthetasc">ae</abbrev>
(X), 2 +
<abbrev id="ABBRID0ENOAE" xlink_title="aesthetasc">ae</abbrev>
(XI), 2 +
<abbrev id="ABBRID0EROAE" xlink_title="aesthetasc">ae</abbrev>
(XII), 2 +
<abbrev id="ABBRID0EVOAE" xlink_title="aesthetasc">ae</abbrev>
(XIII), 2 +
<abbrev id="ABBRID0EZOAE" xlink_title="aesthetasc">ae</abbrev>
(XIV), 2 +
<abbrev id="ABBRID0E4OAE" xlink_title="aesthetasc">ae</abbrev>
(XV), 2 +
<abbrev id="ABBRID0EBPAE" xlink_title="aesthetasc">ae</abbrev>
(XVI), 2 +
<abbrev id="ABBRID0EFPAE" xlink_title="aesthetasc">ae</abbrev>
(XVII), 2 +
<abbrev id="ABBRID0EJPAE" xlink_title="aesthetasc">ae</abbrev>
(XVIII), 2 +
<abbrev id="ABBRID0ENPAE" xlink_title="aesthetasc">ae</abbrev>
(XIX), 2 +
<abbrev id="ABBRID0ERPAE" xlink_title="aesthetasc">ae</abbrev>
(XX), 2 +
<abbrev id="ABBRID0EVPAE" xlink_title="aesthetasc">ae</abbrev>
(XXI), 1 (XXII), 1 (XXIII), 2 (XXIV), 2 +
<abbrev id="ABBRID0EZPAE" xlink_title="aesthetasc">ae</abbrev>
(XXV), 2 (XXVI), 5 +
<abbrev id="ABBRID0E4PAE" xlink_title="aesthetasc">ae</abbrev>
(XXVII XXVIII).
</paragraph>
<paragraph id="A2F25C12AB9CA83D3A79EF2211223A0D">
Antennae (Fig.
<figureCitation id="A31846317E3EE590A31B9C2EF7E15594" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Sipadantonius roihani gen. et sp. nov. female: A antenna B mandible C maxillule, with picture of setae on posterior surface of praecoxal arthrite and enlarged picture of coxal endite D maxilla E maxilliped, with enlarged picture of transformed seta. Arrowhead indicates transformed seta on maxilliped. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure4" httpUri="https://binary.pensoft.net/fig/1191521">4 A</figureCitation>
) biramous. Coxa short, bearing one seta on distomedial corner. Basis with two setae on distomedial corner.
<abbrev id="ABBRID0EHQAE" xlink_title="exopod">Exp</abbrev>
nine-segmented, setal formula from proximal to distal segments: 1.1. 1.1. 1.1. 1.1. 3.
<abbrev id="ABBRID0ELQAE" xlink_title="endopod">Endp</abbrev>
two-segmented; proximal segment bearing two setae inserted at the same place on medial margin; distal segment bilobed, bearing nine apical setae on medial lobe and seven apical setae on distal lobe, with curved row of spinules on outer margin.
</paragraph>
<caption id="9CBA939CB9FD11D5E9AC08626BBE5BC0" ID-DOI="10.3897/zookeys.1219.133132.figure4" ID-arpha="895BECBC-ED71-574F-B8D9-6302B185C0A6" httpUri="https://binary.pensoft.net/fig/1191521" startId="F4">
<paragraph id="6CA97FF73E84CAD9FB80276900D37EED">
<label id="EEEF1AD4A60899EEB19C80811B961975">Figure 4.</label>
</paragraph>
<paragraph id="EEEC22990A1F3FAF89C4507ACF9A47EC">
<taxonomicName id="9E30FD4D3C87F2E6988CD6D43BBB2652" authorityName="Boonyanusith &amp; Wongkamhaeng &amp; Azman" authorityYear="2024" class="Copepoda" family="Epacteriscidae" genus="Sipadantonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="species" species="roihani" status="gen. et sp. nov.">
<emphasis id="A6B264947341E41941F6B3C9BEC9FDBA" italics="true">Sipadantonius roihani</emphasis>
</taxonomicName>
<taxonomicNameLabel id="D5087CD289D13D43B927811919D0E718" rank="species">gen. et sp. nov.</taxonomicNameLabel>
female:
<emphasis id="F8A7A0FFD6677DF51B05E0ACAC7CB0A1" bold="true">A</emphasis>
antenna
<emphasis id="70903A3260D7EA1BA6640BADCBDEBC0B" bold="true">B</emphasis>
mandible
<emphasis id="5BC632F448E02918A48D25CA3B047B48" bold="true">C</emphasis>
maxillule, with picture of setae on posterior surface of praecoxal arthrite and enlarged picture of coxal endite
<emphasis id="A3BF7479CC867782A12A5FBB3EC9F1E4" bold="true">D</emphasis>
maxilla
<emphasis id="2432B3D4E4351CFBFAEA97F0C038BA63" bold="true">E</emphasis>
maxilliped, with enlarged picture of transformed seta. Arrowhead indicates transformed seta on maxilliped. Scale bars: 50 μm.
</paragraph>
</caption>
<paragraph id="E4CCC5852FED0538909882DB585AD381">
Mandibles (Fig.
<figureCitation id="85FACCECFF3FD92C5AACA7BE61BAEDA2" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Sipadantonius roihani gen. et sp. nov. female: A antenna B mandible C maxillule, with picture of setae on posterior surface of praecoxal arthrite and enlarged picture of coxal endite D maxilla E maxilliped, with enlarged picture of transformed seta. Arrowhead indicates transformed seta on maxilliped. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure4" httpUri="https://binary.pensoft.net/fig/1191521">4 B</figureCitation>
) with sclerotised gnathobase comprising nine cuspidate teeth and one small dorsal seta on cutting edge. Mandibular palp biramous; basis with four setae on inner margin.
<abbrev id="ABBRID0EXRAE" xlink_title="exopod">Exp</abbrev>
five-segmented, setal formula from proximal to distal segments: 1.1. 1.1. 2.
<abbrev id="ABBRID0E2RAE" xlink_title="endopod">Endp</abbrev>
two-segmented; proximal segment with four setae on distomedial corner; distal segment short, with ten apical setae.
</paragraph>
<paragraph id="64DED661075FD0F3DAC6A383E02C483B">
Maxillulae (Fig.
<figureCitation id="E036D4B7260855425A3D68D86882FEA1" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Sipadantonius roihani gen. et sp. nov. female: A antenna B mandible C maxillule, with picture of setae on posterior surface of praecoxal arthrite and enlarged picture of coxal endite D maxilla E maxilliped, with enlarged picture of transformed seta. Arrowhead indicates transformed seta on maxilliped. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure4" httpUri="https://binary.pensoft.net/fig/1191521">4 C</figureCitation>
) with praecoxal arthrite bearing nine spinulose and spiniform marginal setae and one smooth marginal seta, with one seta on anterior surface and four setae on posterior surface; proximalmost one on posterior surface longest, unipinnate. Coxal epipodite with nine apical setae; two proximal ones shortest; coxal endite with six apical setae. Basis fused to
<abbrev id="ABBRID0EFSAE" xlink_title="endopod">Endp</abbrev>
, proximal and distal endites armed with four and five apical setae, respectively; basal exite knob-like appearance, unarmed.
<abbrev id="ABBRID0EJSAE" xlink_title="exopod">Exp</abbrev>
with eleven setae along apical and outer margin.
<abbrev id="ABBRID0ENSAE" xlink_title="endopod">Endp</abbrev>
two-segmented, proximal and middle segments completely fused, setal formula: 4.3. 7.
</paragraph>
<paragraph id="5FD2246288222A9C980EB9D9AF2DE30A">
Maxillae (Fig.
<figureCitation id="5DDD4C4A4396787E071BD86520D96C75" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Sipadantonius roihani gen. et sp. nov. female: A antenna B mandible C maxillule, with picture of setae on posterior surface of praecoxal arthrite and enlarged picture of coxal endite D maxilla E maxilliped, with enlarged picture of transformed seta. Arrowhead indicates transformed seta on maxilliped. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure4" httpUri="https://binary.pensoft.net/fig/1191521">4 D</figureCitation>
) seven-segmented, comprising praecoxa, coxa, basis and four-segmented
<abbrev id="ABBRID0EXSAE" xlink_title="endopod">Endp</abbrev>
. Proximal and distal praecoxal endites with five and three apical setae, respectively. Coxa with two endites, each armed with three apical setae, with long spinules near distal margin of endite. Basis with large basal endite, armed with four apical setae; one of which strong and spiniform.
<abbrev id="ABBRID0E2SAE" xlink_title="endopod">Endp</abbrev>
with setal formula: 3.2.2.3.
</paragraph>
<paragraph id="40DCB6E607EDD7F9E280B1843AA0986D">
Maxillipeds (Fig.
<figureCitation id="B96850487AF9FE53640B3688AF060E96" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Sipadantonius roihani gen. et sp. nov. female: A antenna B mandible C maxillule, with picture of setae on posterior surface of praecoxal arthrite and enlarged picture of coxal endite D maxilla E maxilliped, with enlarged picture of transformed seta. Arrowhead indicates transformed seta on maxilliped. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure4" httpUri="https://binary.pensoft.net/fig/1191521">4 E</figureCitation>
) eight-segmented, comprising syncoxa, basis, and six-segmented
<abbrev id="ABBRID0EFTAE" xlink_title="endopod">Endp</abbrev>
. Syncoxa with four syncoxal endites, setal formula: 1.2.4.4; one seta on second and third endite ~ 2 × as long as seta arising nearby. Basis with three medial setae, with row of spinules on anterior surface.
<abbrev id="ABBRID0EJTAE" xlink_title="endopod">Endp</abbrev>
with setal formula: 2.4. 4.3. 3 + 1.4; seta 4 on segment II of
<abbrev id="ABBRID0ENTAE" xlink_title="endopod">Endp</abbrev>
spiniform, with feather-like tip (Fig.
<figureCitation id="0DCA44F5D0CB6A98941208E53B403CC1" captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. Sipadantonius roihani gen. et sp. nov. female: A antenna B mandible C maxillule, with picture of setae on posterior surface of praecoxal arthrite and enlarged picture of coxal endite D maxilla E maxilliped, with enlarged picture of transformed seta. Arrowhead indicates transformed seta on maxilliped. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure4" httpUri="https://binary.pensoft.net/fig/1191521">4 G</figureCitation>
).
</paragraph>
<paragraph id="321E30A7AB658BDA70A34B6BF4B659FB">
<abbrev id="ABBRID0EXTAE" xlink_title="first to sixth swimming legs">P 1</abbrev>
P 4 (Figs
<figureCitation id="BA5DB62F67ED800BA46B7C4A11AAA894" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Sipadantonius roihani gen. et sp. nov. female: A P 1 B basis of P 1, posterior surface C P 1 Exp - 2 D P 2 E P 2 Exp- 1, posterior surface F P 3 G lateral margin of basis of P 3 H P 4. Arrowheads indicate the important characteristic of the structure. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure5" httpUri="https://binary.pensoft.net/fig/1191522">5 A H</figureCitation>
,
<figureCitation id="30748479BF37DB926774E43A07057B44" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Sipadantonius roihani gen. et sp. nov. photographs of lateral surface of basis of swimming legs, female (A-E) and male (F): A posterior hyaline process on basis of P 1 (indicated by arrow) B P 1 C P 3 D P 4 E, F P 5. Arrowheads indicate cuticular windows on lateral margin of basis. Scale bars: 10 μm." figureDoi="10.3897/zookeys.1219.133132.figure6" httpUri="https://binary.pensoft.net/fig/1191523">6 A D</figureCitation>
) biramous, comprising coxa, basis, and three-segmented rami. Integument ornamented with numerous spinules and short hairs. Intercoxal sclerite sub-rectangular. Coxa with medial seta on distomedial corner. Basis of P 2 P 4 with cuticular window representing remnant of armament on outer margin (Figs
<figureCitation id="00714FEA1F7DD1D33E7D4A237DF52863" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Sipadantonius roihani gen. et sp. nov. female: A P 1 B basis of P 1, posterior surface C P 1 Exp - 2 D P 2 E P 2 Exp- 1, posterior surface F P 3 G lateral margin of basis of P 3 H P 4. Arrowheads indicate the important characteristic of the structure. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure5" httpUri="https://binary.pensoft.net/fig/1191522">5 G</figureCitation>
,
<figureCitation id="44B9200BE83FFC5A9B2A243DEDD9F96A" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Sipadantonius roihani gen. et sp. nov. photographs of lateral surface of basis of swimming legs, female (A-E) and male (F): A posterior hyaline process on basis of P 1 (indicated by arrow) B P 1 C P 3 D P 4 E, F P 5. Arrowheads indicate cuticular windows on lateral margin of basis. Scale bars: 10 μm." figureDoi="10.3897/zookeys.1219.133132.figure6" httpUri="https://binary.pensoft.net/fig/1191523">6 C, D</figureCitation>
) but the remnant not discernible in
<abbrev id="ABBRID0ELUAE" xlink_title="first to sixth swimming legs">P 1</abbrev>
(Fig.
<figureCitation id="4799D57C87A352164D9268E52CB9A220" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Sipadantonius roihani gen. et sp. nov. photographs of lateral surface of basis of swimming legs, female (A-E) and male (F): A posterior hyaline process on basis of P 1 (indicated by arrow) B P 1 C P 3 D P 4 E, F P 5. Arrowheads indicate cuticular windows on lateral margin of basis. Scale bars: 10 μm." figureDoi="10.3897/zookeys.1219.133132.figure6" httpUri="https://binary.pensoft.net/fig/1191523">6 B</figureCitation>
). Outer spine of
<abbrev id="ABBRID0ETUAE" xlink_title="first to sixth swimming legs">P 1</abbrev>
<abbrev id="ABBRID0EXUAE" xlink_title="exopod">Exp</abbrev>
setiform; those of
<abbrev id="ABBRID0E2UAE" xlink_title="exopod">Exp</abbrev>
of P 2 P 4 stronger and oar-shaped. Distolateral corner of
<abbrev id="ABBRID0E6UAE" xlink_title="first to sixth swimming legs">P 1</abbrev>
<abbrev id="ABBRID0EDVAE" xlink_title="exopod">Exp</abbrev>
- 2 drawn out into mint leaf-like process; those of
<abbrev id="ABBRID0EHVAE" xlink_title="proximal (middle, distal) segment of the exopod of the swimming legs">Exp- 1</abbrev>
and
<abbrev id="ABBRID0ELVAE" xlink_title="exopod">Exp</abbrev>
- 2 of P 2 P 4 slightly extended, with two acutely protrusions beside spine; inner protrusion larger and longer than outer one. Anterior surfaces of
<abbrev id="ABBRID0EPVAE" xlink_title="proximal (middle, distal) segment of the exopod of the swimming legs">Exp- 1</abbrev>
and
<abbrev id="ABBRID0ETVAE" xlink_title="exopod">Exp</abbrev>
- 2 with cuticular pores near insertion of outer spine;
<abbrev id="ABBRID0EXVAE" xlink_title="exopod">Exp</abbrev>
- 2 with acutely minute process near distomedial corner in P 2 P 4 but not discernible in
<abbrev id="ABBRID0E2VAE" xlink_title="first to sixth swimming legs">P 1</abbrev>
;
<abbrev id="ABBRID0E6VAE" xlink_title="exopod">Exp</abbrev>
- 3 with cuticular pores near insertion of both proximalmost outer spine and outer apical one.
<abbrev id="ABBRID0EDWAE" xlink_title="endopod">Endp</abbrev>
of all swimming legs with cuticular pores near distal margin of
<abbrev id="ABBRID0EHWAE" xlink_title="proximal (middle, distal) segment of the endopod of the swimming legs">Endp- 1</abbrev>
and at distal ~ 1 / 4 of
<abbrev id="ABBRID0ELWAE" xlink_title="endopod">Endp</abbrev>
- 3. Outer and outer apical spines of all swimming legs relatively short, oar-shaped; inner apical spine with serrated cuticular expansion on outer margin. Armature of swimming legs as presented in Table
<tableCitation id="DA957910AEE239D9825EBB1FE4822ED2" captionStart="Table 1" captionStartId="T1" captionText="Table 1. Armament of P 1 P 5 in Sipadantonius roihani gen. et sp. nov., (Legend: outer-inner element; outer-apical-inner element; Arabic numerals indicate number of setae; Roman numerals indicate number of spines)." httpUri="http://table.plazi.org/id/482BE06E6322081FD8C4086C0725AF04" tableUuid="482BE06E6322081FD8C4086C0725AF04">1</tableCitation>
. Some other characteristics of
<abbrev id="ABBRID0ETWAE" xlink_title="first to sixth swimming legs">P 1</abbrev>
P 4 as following described.
</paragraph>
<caption id="482BE06E6322081FD8C4086C0725AF04" ID-Table-UUID="482BE06E6322081FD8C4086C0725AF04" httpUri="http://table.plazi.org/id/482BE06E6322081FD8C4086C0725AF04" startId="T1" targetIsTable="true">
<paragraph id="83281FB87F573BF2C674CAADFAD45675">
<label id="AD95BE200007841D6AF285A706420A8D">Table 1.</label>
</paragraph>
<paragraph id="4F2381C2B756A303A105303D7CC201E3">
Armament of
<abbrev id="ABBRID0EAXAE" xlink_title="first to sixth swimming legs">P 1</abbrev>
P 5 in
<taxonomicName id="CBCE1C7CAB22CE73E8FBEFE82807D9AE" authorityName="Boonyanusith &amp; Wongkamhaeng &amp; Azman" authorityYear="2024" class="Copepoda" family="Epacteriscidae" genus="Sipadantonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="species" species="roihani" status="gen. et sp. nov.">
<emphasis id="E06A2154F31A39087ADFC72A05FEC98C" italics="true">Sipadantonius roihani</emphasis>
</taxonomicName>
<taxonomicNameLabel id="5C49450BE5D76006AEC6E3B2D61A26D6" rank="species">gen. et sp. nov.</taxonomicNameLabel>
, (Legend: outer-inner element; outer-apical-inner element; Arabic numerals indicate number of setae; Roman numerals indicate number of spines).
</paragraph>
</caption>
<paragraph id="FE62B161537E2855F40DD0A343E26838">
<table id="TID0EWNBG" rules="all">
<tbody id="7DD8BF8E0F45115C0A30689ED4725246">
<tr id="D8FA318B2A1CAB065326DAF912CB5E43">
<th id="A1FCF8D6698DDCF917F10BC48F4541EF" colspan="1" rowspan="2">Swimming leg</th>
<th id="631B3EF32D2EFD19D1EF22AD1EC54507" colspan="1" rowspan="2">Coxa</th>
<th id="AF5E0EE065CE54ACAC8CBD3C706A509B" colspan="1" rowspan="2">Basis</th>
<th id="088D48FBE99A28C06C2F260D83F59893" colspan="3" rowspan="1">Exopod</th>
<th id="28FABD6A502CA0F5D22B15BA24C22B4F" colspan="3" rowspan="1">Endopod</th>
</tr>
<tr id="00638059B239B4038F75468A371D01C4">
<th id="252ADF29AB71691B2857D51F4C9ACD28" colspan="1" rowspan="1">1</th>
<th id="01E4DAFCA7978AFA4B77AF216942169A" colspan="1" rowspan="1">2</th>
<th id="5FC85A08F29693B0545081657CBDE46B" colspan="1" rowspan="1">3</th>
<th id="533460168E9D357E25A7978A49E0DE69" colspan="1" rowspan="1">1</th>
<th id="9B34C2FDB3BF0D474CB24BA6C03692EB" colspan="1" rowspan="1">2</th>
<th id="7F8A6BC4E015A96F82C2481F00349D79" colspan="1" rowspan="1">3</th>
</tr>
<tr id="EE239F4B08BA11C5335267EE63A3EE84">
<td id="E955284A4F0556E877F0D3CE63F19C62" colspan="1" rowspan="1">
<abbrev id="ABBRID0E2YAE" xlink_title="first to sixth swimming legs">P 1</abbrev>
</td>
<td id="40EBEEBC40347A0D6733F7338138B1F9" colspan="1" rowspan="1">0-1</td>
<td id="F3D409035B22DB47DC126311AE755EDF" colspan="1" rowspan="1">0-1</td>
<td id="D9AA4E7DB6E396AD34CECC2B1DD8F64B" colspan="1" rowspan="1">I- 1</td>
<td id="8EA8F249C37C9475EDF800F3C64A8A77" colspan="1" rowspan="1">1-1</td>
<td id="B4B4073BDFB67A3CA42417ACDC903D13" colspan="1" rowspan="1">II-I- 4</td>
<td id="D6D75C1027A9C99715C9C4E76E1162A2" colspan="1" rowspan="1">0-1</td>
<td id="6C0C747B41AF1E3E0B5633D82AFD6D34" colspan="1" rowspan="1">0-2</td>
<td id="9E596C91ACF388B30F403DBF02410CAF" colspan="1" rowspan="1">1-2 - 3</td>
</tr>
<tr id="1C854C51712A841875025FBBA5A32D9B">
<td id="4D68D701415C57B19C1FA4B3909CD938" colspan="1" rowspan="1">P 2</td>
<td id="4FEE18D5A9D654B962E1F52F1F758616" colspan="1" rowspan="1">0-1</td>
<td id="4EA71588CFD5CC11F08804D3CE239ED4" colspan="1" rowspan="1">0-0</td>
<td id="D16380CB895A392376155868243CD077" colspan="1" rowspan="1">I- 1</td>
<td id="78168EDF9415E7732EC9BA2E7C8DCDD9" colspan="1" rowspan="1">I- 1</td>
<td id="5578118669FFB45FA940C8DBCF48AA4A" colspan="1" rowspan="1">II-I- 5</td>
<td id="59413801D3509CFCD8BCE0147CFD85DD" colspan="1" rowspan="1">0-1</td>
<td id="116C154B1CD7F6BB30EB8CB848941A4E" colspan="1" rowspan="1">0-2</td>
<td id="6BE078EB6316B4F76A1F651E2B096223" colspan="1" rowspan="1">2-2 - 4</td>
</tr>
<tr id="B5157A7289FE61023EEFAC13AEA0A2E8">
<td id="719E3134835ECAD8BD79C0C7FF5334FA" colspan="1" rowspan="1">P 3</td>
<td id="DC612648D977B4F7102A92CB608393C2" colspan="1" rowspan="1">0-1</td>
<td id="D8BC72EA0998FF6EF46D6B30686FBC18" colspan="1" rowspan="1">0-0</td>
<td id="800A945E9A842788D93218F8C7F3E310" colspan="1" rowspan="1">I- 1</td>
<td id="6D5537C564D4F21E57412FE8DC639A8C" colspan="1" rowspan="1">I- 1</td>
<td id="D2D3AEDB27878D6ECCF8AF1755665DF1" colspan="1" rowspan="1">III-I- 5</td>
<td id="9EA1D711F6EEF420F1936F226A748F41" colspan="1" rowspan="1">0-1</td>
<td id="175B342074FFDA44178E8C732D5A5D14" colspan="1" rowspan="1">0-2</td>
<td id="3800A7F14D9FBE752FB52F7BE3A34359" colspan="1" rowspan="1">2-2 - 4</td>
</tr>
<tr id="40F22AA59292E3DD6979A4A17E908A44">
<td id="3D3A9AB0F2883E479F99F4C315E05793" colspan="1" rowspan="1">P 4</td>
<td id="3449050DA1E14F62470DF8E9DB9C4B01" colspan="1" rowspan="1">0-1</td>
<td id="C483613900B97D1B4A9BE6D00E59E54D" colspan="1" rowspan="1">0-0</td>
<td id="A0EF4B7E069BC79E848BD3769B07FCD5" colspan="1" rowspan="1">I- 1</td>
<td id="32276F2936EE22D26FC4125FD30A86E0" colspan="1" rowspan="1">I- 1</td>
<td id="3207DFE71CC2784171DE7324BA6230CF" colspan="1" rowspan="1">III-I- 5</td>
<td id="6B2FFC27460A1BE20E58E349E3B520BB" colspan="1" rowspan="1">0-1</td>
<td id="507A78D845E7313E13383455DBB06044" colspan="1" rowspan="1">0-2</td>
<td id="DB4F50E83C0608BD266559182742B44E" colspan="1" rowspan="1">2-2 - 3</td>
</tr>
<tr id="3268DBA11B0C8D2451554CBB11736DE1">
<td id="4058024F265ACBF7C0C733F6A88D681B" colspan="1" rowspan="1">P 5 (female)</td>
<td id="19594CB157E10F068DAF3E664063419E" colspan="1" rowspan="1">0-1</td>
<td id="C07B703D3F901CC73D5626A715D31798" colspan="1" rowspan="1">0-0</td>
<td id="4C265AA63799EBEA4C03C034BA1483DB" colspan="1" rowspan="1">I- 1</td>
<td id="8BDBE24C1AF0BE4E8BB3DD1DD3BEE81B" colspan="1" rowspan="1">I- 1</td>
<td id="C7AD55AF54899A02EE9047D2AAB8E0F6" colspan="1" rowspan="1">III-I- 4</td>
<td id="88388922E729A228DABBFC743A01E81C" colspan="1" rowspan="1">0-1</td>
<td id="545D5670384F17BD8CC32CDAF4D626B7" colspan="1" rowspan="1">0-1</td>
<td id="9A87F43E28347BB6C3FFA3012B7D2BE2" colspan="1" rowspan="1">2-2 - 2</td>
</tr>
<tr id="34B01D68BD6F59586C774480E52DF267">
<td id="FE11088C2C1EF32A18DC78B2CA3DAA8B" colspan="1" rowspan="1">Left leg of P 5 (male)</td>
<td id="6A35819830DF2F3ED303DF944882F168" colspan="1" rowspan="1">0-0</td>
<td id="1DB74AF9E5D740A496FB5FE29B2FCD12" colspan="1" rowspan="1">0-0</td>
<td id="B3D5CDF4F61FDC064D8CDC6B71FC42A9" colspan="1" rowspan="1">I- 0</td>
<td id="F4E41C6D9154021FA3E98B26AFD90736" colspan="1" rowspan="1">I- 0</td>
<td id="77B720EC9CE51987AE32E1C1087406E6" colspan="1" rowspan="1">0 - I-I</td>
<td id="7DB5AF9C8EDCF21623325FA10FC840C7" colspan="1" rowspan="1">0-0</td>
<td id="961731E4373D4EDE6F5FF4D6F451A0F9" colspan="1" rowspan="1">0-1</td>
<td id="8D3B9FC281374F9883ABCBB32CB64384" colspan="1" rowspan="1">2-2 - 2</td>
</tr>
<tr id="33C9F51664DB4763B700709B7A501378">
<td id="09F9753938CFBCB272E14D8E245C8AB2" colspan="1" rowspan="1">Right leg of P 5 (male)</td>
<td id="0EAC26726B0795DC0F296EABAF8BEFFE" colspan="1" rowspan="1">0-0</td>
<td id="DE7B8339C3EAB1B4B34F9C397454E6F3" colspan="1" rowspan="1">0-0</td>
<td id="B2E3B9197B6C34BFE40E6458F080E603" colspan="1" rowspan="1">I- 0</td>
<td id="72D047518A246479105BD191F9304182" colspan="1" rowspan="1">I- 0</td>
<td id="EDCB84CEB8FC4FAFBC0EAA72AC8A7A8C" colspan="1" rowspan="1">I- 0 - I</td>
<td id="9E55FD0363B1D6898CD51C60ACEB762A" colspan="1" rowspan="1">0 - 0</td>
<td id="704BF803C5054B32764866ECCE8CBD4B" colspan="1" rowspan="1">0-1</td>
<td id="91E4D8A1C435E32FDD57502E7209A5AE" colspan="1" rowspan="1">2-2 - 2</td>
</tr>
</tbody>
</table>
</paragraph>
<caption id="A7FF686BCD8F5ACBB07128918649F9AD" ID-DOI="10.3897/zookeys.1219.133132.figure5" ID-arpha="D4B3113C-9C01-5793-A036-6BFE60B29CF1" httpUri="https://binary.pensoft.net/fig/1191522" startId="F5">
<paragraph id="417DDBD8259DC0643BBD52E9256FB676">
<label id="2D3862876D128BEADB0FC1AB8303D94C">Figure 5.</label>
</paragraph>
<paragraph id="47834BEA7EEDFBAFE1A3F0D10A170F98">
<taxonomicName id="EE38A7F9F94F933DDA88A9F11CC72B32" authorityName="Boonyanusith &amp; Wongkamhaeng &amp; Azman" authorityYear="2024" class="Copepoda" family="Epacteriscidae" genus="Sipadantonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="species" species="roihani" status="gen. et sp. nov.">
<emphasis id="EED8F51B681A0B66D65E0F61AC29A133" italics="true">Sipadantonius roihani</emphasis>
</taxonomicName>
<taxonomicNameLabel id="E9570CB64CF07FE9B94F7144137988F6" rank="species">gen. et sp. nov.</taxonomicNameLabel>
female:
<emphasis id="5350183DD0B826F55761FC10277E3C23" bold="true">A</emphasis>
<abbrev id="ABBRID0EU6AE" xlink_title="first to sixth swimming legs">P 1</abbrev>
<emphasis id="06E0F663B67E0DCAA1AC3ADB498F6F8F" bold="true">B</emphasis>
basis of
<abbrev id="ABBRID0E16AE" xlink_title="first to sixth swimming legs">P 1</abbrev>
, posterior surface
<emphasis id="68DA875E0AD777ADFBD7F001F4C1943D" bold="true">C</emphasis>
<abbrev id="ABBRID0EBAAG" xlink_title="first to sixth swimming legs">P 1</abbrev>
<abbrev id="ABBRID0EFAAG" xlink_title="exopod">Exp</abbrev>
- 2
<emphasis id="B4565BAFCD5691B5F9FAA74B209D4F26" bold="true">D</emphasis>
P 2
<emphasis id="4CECD8784B3EC4C0889FF2D1DA91B433" bold="true">E</emphasis>
P 2
<abbrev id="ABBRID0ENAAG" xlink_title="proximal (middle, distal) segment of the exopod of the swimming legs">Exp- 1</abbrev>
, posterior surface
<emphasis id="5FBA3F1A0ABF6044059160C818097A24" bold="true">F</emphasis>
P 3
<emphasis id="D26DA7E806669A0E9F3A774B1128EB51" bold="true">G</emphasis>
lateral margin of basis of P 3
<emphasis id="EF0C72D259538C43209C637BEAC73FCC" bold="true">H</emphasis>
P 4. Arrowheads indicate the important characteristic of the structure. Scale bars: 50 μm.
</paragraph>
</caption>
<caption id="BED6B07607A08716FD3843CCE4A9C05A" ID-DOI="10.3897/zookeys.1219.133132.figure6" ID-arpha="E65939E6-2969-5370-B1A8-625BD24C24F2" httpUri="https://binary.pensoft.net/fig/1191523" startId="F6">
<paragraph id="4506BC524149975B76132322AB2DD638">
<label id="8553A7E870BC4C09C657164B5B4F0D59">Figure 6.</label>
</paragraph>
<paragraph id="7993FBC4503E0D330AAEA8BDA42604FD">
<taxonomicName id="8A183832CD8C38068AE41D7EA0B6EF48" authorityName="Boonyanusith &amp; Wongkamhaeng &amp; Azman" authorityYear="2024" class="Copepoda" family="Epacteriscidae" genus="Sipadantonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="species" species="roihani" status="gen. et sp. nov.">
<emphasis id="E6261E50DB572612C6CA19BE4E442715" italics="true">Sipadantonius roihani</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A4106D8B57455194E6752C767BBAF51C" rank="species">gen. et sp. nov.</taxonomicNameLabel>
photographs of lateral surface of basis of swimming legs, female (
<emphasis id="89346E5E1FE74B2DA7D86FCE04F507AC" bold="true">A-E</emphasis>
) and male (
<emphasis id="F71AC3585EBCAC5DDCB9D5CDCD47A7A8" bold="true">F</emphasis>
):
<emphasis id="ADF6B379667F6FF27C9E6DF532744980" bold="true">A</emphasis>
posterior hyaline process on basis of
<abbrev id="ABBRID0EVBAG" xlink_title="first to sixth swimming legs">P 1</abbrev>
(indicated by arrow)
<emphasis id="08BE427F374CB42D6B6BAAC76C647265" bold="true">B</emphasis>
<abbrev id="ABBRID0E2BAG" xlink_title="first to sixth swimming legs">P 1</abbrev>
<emphasis id="83DFA783061442AF53BF6AC0155E2795" bold="true">C</emphasis>
P 3
<emphasis id="1733630B27D98A84737FF1758B50AA4B" bold="true">D</emphasis>
P 4
<emphasis id="B72B7ED121E2B424B9862C2CB1C08DA7" bold="true">E, F</emphasis>
P 5. Arrowheads indicate cuticular windows on lateral margin of basis. Scale bars: 10 μm.
</paragraph>
</caption>
<paragraph id="E8B7A4A5AF23740C949A8E760A8E5680">
<abbrev id="ABBRID0EMCAG" xlink_title="first to sixth swimming legs">P 1</abbrev>
(Figs
<figureCitation id="5150017C11E66D4A15BB9158AC31BC74" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Sipadantonius roihani gen. et sp. nov. female: A P 1 B basis of P 1, posterior surface C P 1 Exp - 2 D P 2 E P 2 Exp- 1, posterior surface F P 3 G lateral margin of basis of P 3 H P 4. Arrowheads indicate the important characteristic of the structure. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure5" httpUri="https://binary.pensoft.net/fig/1191522">5 A C</figureCitation>
,
<figureCitation id="AC7C5F4349F8FD88DEE4AC20BC881098" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Sipadantonius roihani gen. et sp. nov. photographs of lateral surface of basis of swimming legs, female (A-E) and male (F): A posterior hyaline process on basis of P 1 (indicated by arrow) B P 1 C P 3 D P 4 E, F P 5. Arrowheads indicate cuticular windows on lateral margin of basis. Scale bars: 10 μm." figureDoi="10.3897/zookeys.1219.133132.figure6" httpUri="https://binary.pensoft.net/fig/1191523">6 A, B</figureCitation>
). Coxa trapezoidal; anterior surface with triangular expansion on proximomedial corner and oval integumental window near distomedial corner; integumental window surrounded by curved spinules. Basis bearing medial seta on distomedial corner but lacking either lateral seta or remnant of armament on outer margin; posterior surface with short curved hyaline process near insertion of
<abbrev id="ABBRID0EYCAG" xlink_title="exopod">Exp</abbrev>
(Fig.
<figureCitation id="716CBAC7CDD2587832C0054BBD3F74A8" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Sipadantonius roihani gen. et sp. nov. photographs of lateral surface of basis of swimming legs, female (A-E) and male (F): A posterior hyaline process on basis of P 1 (indicated by arrow) B P 1 C P 3 D P 4 E, F P 5. Arrowheads indicate cuticular windows on lateral margin of basis. Scale bars: 10 μm." figureDoi="10.3897/zookeys.1219.133132.figure6" httpUri="https://binary.pensoft.net/fig/1191523">6 B</figureCitation>
). Anterior surface of
<abbrev id="ABBRID0EADAG" xlink_title="proximal (middle, distal) segment of the exopod of the swimming legs">Exp- 1</abbrev>
with row of long spinules on distolateral corner.
<abbrev id="ABBRID0EEDAG" xlink_title="proximal (middle, distal) segment of the endopod of the swimming legs">Endp- 1</abbrev>
with bifid indenture on distolateral corner and long spinules along posterior margin;
<abbrev id="ABBRID0EIDAG" xlink_title="endopod">Endp</abbrev>
- 2 with an acute indenture on distolateral corner.
</paragraph>
<paragraph id="FB3B05EA2DA0DDBE76F9EFA58754AA5E">
P 2 (Fig.
<figureCitation id="7F28FBE8259B476EDE7E6AE5646FF34A" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Sipadantonius roihani gen. et sp. nov. female: A P 1 B basis of P 1, posterior surface C P 1 Exp - 2 D P 2 E P 2 Exp- 1, posterior surface F P 3 G lateral margin of basis of P 3 H P 4. Arrowheads indicate the important characteristic of the structure. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure5" httpUri="https://binary.pensoft.net/fig/1191522">5 D, E</figureCitation>
). Coxa rectangular. Posterior surface of
<abbrev id="ABBRID0ESDAG" xlink_title="proximal (middle, distal) segment of the exopod of the swimming legs">Exp- 1</abbrev>
with circular integumental window near insertion of inner seta;
<abbrev id="ABBRID0EWDAG" xlink_title="exopod">Exp</abbrev>
- 3 with two outer spines.
<abbrev id="ABBRID0E1DAG" xlink_title="proximal (middle, distal) segment of the endopod of the swimming legs">Endp- 1</abbrev>
with an acute indenture on distolateral corner; that of
<abbrev id="ABBRID0E5DAG" xlink_title="exopod">Exp</abbrev>
- 2 bifid.
</paragraph>
<paragraph id="4FB6709FFFE1BE14BD722A6E8E9267B6">
P 3 (Figs
<figureCitation id="61C5A62241C3D58A956B88802621B242" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Sipadantonius roihani gen. et sp. nov. female: A P 1 B basis of P 1, posterior surface C P 1 Exp - 2 D P 2 E P 2 Exp- 1, posterior surface F P 3 G lateral margin of basis of P 3 H P 4. Arrowheads indicate the important characteristic of the structure. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure5" httpUri="https://binary.pensoft.net/fig/1191522">5 F, G</figureCitation>
,
<figureCitation id="16FCFE407204554FDA4954ADA1B06BD5" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Sipadantonius roihani gen. et sp. nov. photographs of lateral surface of basis of swimming legs, female (A-E) and male (F): A posterior hyaline process on basis of P 1 (indicated by arrow) B P 1 C P 3 D P 4 E, F P 5. Arrowheads indicate cuticular windows on lateral margin of basis. Scale bars: 10 μm." figureDoi="10.3897/zookeys.1219.133132.figure6" httpUri="https://binary.pensoft.net/fig/1191523">6 C</figureCitation>
) as that of P 2 but
<abbrev id="ABBRID0EMEAG" xlink_title="proximal (middle, distal) segment of the exopod of the swimming legs">Exp- 1</abbrev>
lacking integumental window on posterior surfaces and
<abbrev id="ABBRID0EQEAG" xlink_title="exopod">Exp</abbrev>
- 3 with three outer spines.
</paragraph>
<paragraph id="331AD588A0245108FBCE8DD17D74F079">
P 4 (Figs
<figureCitation id="9C155260C41742D0164530CE870B7CAB" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Sipadantonius roihani gen. et sp. nov. female: A P 1 B basis of P 1, posterior surface C P 1 Exp - 2 D P 2 E P 2 Exp- 1, posterior surface F P 3 G lateral margin of basis of P 3 H P 4. Arrowheads indicate the important characteristic of the structure. Scale bars: 50 μm." figureDoi="10.3897/zookeys.1219.133132.figure5" httpUri="https://binary.pensoft.net/fig/1191522">5 H</figureCitation>
,
<figureCitation id="6E14EA94F01138C00EE34BE8B4D8F8D8" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Sipadantonius roihani gen. et sp. nov. photographs of lateral surface of basis of swimming legs, female (A-E) and male (F): A posterior hyaline process on basis of P 1 (indicated by arrow) B P 1 C P 3 D P 4 E, F P 5. Arrowheads indicate cuticular windows on lateral margin of basis. Scale bars: 10 μm." figureDoi="10.3897/zookeys.1219.133132.figure6" httpUri="https://binary.pensoft.net/fig/1191523">6 D</figureCitation>
) Coxa sub-quadrate. Basis and rami as those of P 3.
</paragraph>
<paragraph id="F8BB13866C71DF9BAB65CCDC2257A611">
P 5 (Figs
<figureCitation id="D217259CFE82A767D3C147DAE6FE70D8" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Sipadantonius roihani gen. et sp. nov. photographs of lateral surface of basis of swimming legs, female (A-E) and male (F): A posterior hyaline process on basis of P 1 (indicated by arrow) B P 1 C P 3 D P 4 E, F P 5. Arrowheads indicate cuticular windows on lateral margin of basis. Scale bars: 10 μm." figureDoi="10.3897/zookeys.1219.133132.figure6" httpUri="https://binary.pensoft.net/fig/1191523">6 E</figureCitation>
,
<figureCitation id="FEDF79D938B37F52A7CDBFA560D74ABF" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. Sipadantonius roihani gen. et sp. nov. female (A) and male (B-D): A P 5 B habitus, dorsal view C habitus, lateral view D urosome, ventral view. Arrow indicates the ventral suture on genital somite. Scale bars: 50 μm (A, D); 200 μm (B, C)." figureDoi="10.3897/zookeys.1219.133132.figure7" httpUri="https://binary.pensoft.net/fig/1191524">7 A</figureCitation>
) biramous, with both rami three-segmented; armament as in Table
<tableCitation id="7A9707D7762D5EE8DAC19EC4D7CF03D7" captionStart="Table 1" captionStartId="T1" captionText="Table 1. Armament of P 1 P 5 in Sipadantonius roihani gen. et sp. nov., (Legend: outer-inner element; outer-apical-inner element; Arabic numerals indicate number of setae; Roman numerals indicate number of spines)." httpUri="http://table.plazi.org/id/482BE06E6322081FD8C4086C0725AF04" tableUuid="482BE06E6322081FD8C4086C0725AF04">1</tableCitation>
. Integument and intercoxal sclerite as described for P 2 P 4. Coxa rectangular, longer than wide; medial seta shorter than those of
<abbrev id="ABBRID0EMFAG" xlink_title="first to sixth swimming legs">P 1</abbrev>
P 4. Basis,
<abbrev id="ABBRID0EQFAG" xlink_title="proximal (middle, distal) segment of the exopod of the swimming legs">Exp- 1</abbrev>
and
<abbrev id="ABBRID0EUFAG" xlink_title="exopod">Exp</abbrev>
- 2 as in P 3 and P 4, but inner seta on
<abbrev id="ABBRID0EYFAG" xlink_title="proximal (middle, distal) segment of the exopod of the swimming legs">Exp- 1</abbrev>
shorter than those of
<abbrev id="ABBRID0E3FAG" xlink_title="first to sixth swimming legs">P 1</abbrev>
P 4.
<abbrev id="ABBRID0EAGAG" xlink_title="exopod">Exp</abbrev>
- 3 ~ 2.5 × as long as wide, offset on inner side at distal ~ 1 / 3 of segment.
<abbrev id="ABBRID0EEGAG" xlink_title="proximal (middle, distal) segment of the endopod of the swimming legs">Endp- 1</abbrev>
and
<abbrev id="ABBRID0EIGAG" xlink_title="endopod">Endp</abbrev>
- 2 with an acute indenture on distolateral corner each;
<abbrev id="ABBRID0EMGAG" xlink_title="endopod">Endp</abbrev>
- 3 longer than length of
<abbrev id="ABBRID0EQGAG" xlink_title="proximal (middle, distal) segment of the endopod of the swimming legs">Endp- 1</abbrev>
and
<abbrev id="ABBRID0EUGAG" xlink_title="endopod">Endp</abbrev>
- 2 combined. Ornamentation as that of P 3 and P 4.
</paragraph>
<caption id="C1ED716302DD406E460A9B8AB62397AB" ID-DOI="10.3897/zookeys.1219.133132.figure7" ID-arpha="2B484800-A456-5092-82AC-EC22126847A2" httpUri="https://binary.pensoft.net/fig/1191524" startId="F7">
<paragraph id="308A5D00D1B9E88A1E44054103D725BE">
<label id="CBF4478954F1D872DCE2EBD398D60700">Figure 7.</label>
</paragraph>
<paragraph id="1AD6B4D06E816AF8E492A271C1C25E52">
<taxonomicName id="4B40F8340E8B73425C650AB60BAB8143" authorityName="Boonyanusith &amp; Wongkamhaeng &amp; Azman" authorityYear="2024" class="Copepoda" family="Epacteriscidae" genus="Sipadantonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="species" species="roihani" status="gen. et sp. nov.">
<emphasis id="57406C9D6AB53FC6B5EBF2D1A5915CBE" italics="true">Sipadantonius roihani</emphasis>
</taxonomicName>
<taxonomicNameLabel id="E1DC12310662A9768948909BD5B35C22" rank="species">gen. et sp. nov.</taxonomicNameLabel>
female
<emphasis id="7AAF2905BE26AE5DD01BC1F68AD9B079" bold="true">(A)</emphasis>
and male
<emphasis id="B1B1EA5E146C562C79D8ABAAA6C02D35" bold="true">(B-D)</emphasis>
:
<emphasis id="3375C1DE5B85C67A21E41F1348AE3562" bold="true">A</emphasis>
P 5
<emphasis id="082497D3FE0B85F6ED9CFF9E4DFC5D20" bold="true">B</emphasis>
habitus, dorsal view
<emphasis id="EECB425B5E8E2FD23950BDCF24D9F666" bold="true">C</emphasis>
habitus, lateral view
<emphasis id="26B643633B928B0D61873F44760B4E32" bold="true">D</emphasis>
urosome, ventral view. Arrow indicates the ventral suture on genital somite. Scale bars: 50 μm (
<emphasis id="1AD0F7DB83D08CCC0A935A13CF15A6BA" bold="true">A, D</emphasis>
); 200 μm (
<emphasis id="FEE90432D005B7C811D7946C167FF397" bold="true">B, C</emphasis>
).
</paragraph>
</caption>
</subSubSection>
<subSubSection id="SECID0EAIAG" type="description">
<paragraph id="BF217BDD999F0EEAF49DB22C5AACADC3">
<heading id="5AA96886142CCEED958713592DB1E753" reason="title">Description of adult male.</heading>
</paragraph>
<paragraph id="31422D164F4D3904134E7AE28C9F8F60">
Body (Fig.
<figureCitation id="69C16C2C1826F702EAE898072B48F129" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. Sipadantonius roihani gen. et sp. nov. female (A) and male (B-D): A P 5 B habitus, dorsal view C habitus, lateral view D urosome, ventral view. Arrow indicates the ventral suture on genital somite. Scale bars: 50 μm (A, D); 200 μm (B, C)." figureDoi="10.3897/zookeys.1219.133132.figure7" httpUri="https://binary.pensoft.net/fig/1191524">7 B</figureCitation>
) with a total length of 0.87 and
<quantity id="10CE28A50E7082E2CF21DF750EBDE6F0" metricMagnitude="-4" metricUnit="m" metricValue="8.9" unit="mm" value="0.89">0.89 mm</quantity>
(measured from anterior margin of cephalosome to tip of furcal rami; mean:
<quantity id="4A70727A6501C08314451A48D3350A8F" metricMagnitude="-4" metricUnit="m" metricValue="8.9" unit="mm" value="0.89">0.89 mm</quantity>
;
<emphasis id="D9A32DDA92C6F87E35B91B3229F8CE2E" italics="true">n</emphasis>
= 2). Habitus slightly smaller and slenderer than in female (Fig.
<figureCitation id="3601A33FA1D0DE4E1102C81597103B44" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. Sipadantonius roihani gen. et sp. nov. female (A) and male (B-D): A P 5 B habitus, dorsal view C habitus, lateral view D urosome, ventral view. Arrow indicates the ventral suture on genital somite. Scale bars: 50 μm (A, D); 200 μm (B, C)." figureDoi="10.3897/zookeys.1219.133132.figure7" httpUri="https://binary.pensoft.net/fig/1191524">7 B, C</figureCitation>
). Prosome six-segmented, elliptical, ~ 70 % of body length and 2.2 × as long as urosome, ~ 2.6 × as long as wide, with greatest width at posterior margin of the first pedigerous somite. Cephalosome and first three pedigerous somites similar to those in female. Naupliar eye not discernible. Urosome five-segmented; comprising genital somite and four free abdominal somites. Genital somite slightly asymmetrical; ventral surface with gonopore on proximal margin. All free abdominal somites similar in length, each with finely serrated hyaline frill on posterior margin. Anal somite identical to that of female (Fig.
<figureCitation id="E5D5933C488847B6478E409A9912E312" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. Sipadantonius roihani gen. et sp. nov. female (A) and male (B-D): A P 5 B habitus, dorsal view C habitus, lateral view D urosome, ventral view. Arrow indicates the ventral suture on genital somite. Scale bars: 50 μm (A, D); 200 μm (B, C)." figureDoi="10.3897/zookeys.1219.133132.figure7" httpUri="https://binary.pensoft.net/fig/1191524">7 B, D</figureCitation>
).
</paragraph>
<paragraph id="8BFF13D67841601560E07FB8F8A4FBB3">
Furcal rami (Fig.
<figureCitation id="EECA49DE9533F662B8E24DF577D61280" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. Sipadantonius roihani gen. et sp. nov. female (A) and male (B-D): A P 5 B habitus, dorsal view C habitus, lateral view D urosome, ventral view. Arrow indicates the ventral suture on genital somite. Scale bars: 50 μm (A, D); 200 μm (B, C)." figureDoi="10.3897/zookeys.1219.133132.figure7" httpUri="https://binary.pensoft.net/fig/1191524">7 D</figureCitation>
) identical to that of female, ~ 3 × as long as wide. Armament and ornamentation identical to that of female.
</paragraph>
<paragraph id="00AFD5E984C571F2FF789C6A3DADB6D3">
Antennules asymmetrical. Left antennule non-geniculate, reaching distal margin of urosomite 2; articulation and setation identical to those of female. Right antennule geniculate, representing 22 - segmented (Fig.
<figureCitation id="90B4D2B4782DF08C1FB01858A088E224" captionStart="Figure 8" captionStartId="F8" captionText="Figure 8. Sipadantonius roihani gen. et sp. nov. male: A segments 115 of antennule, with picture of segment 12 that aesthetasc is removed B segments 1622 of antennule C P 5 furcal view D Exp - 2 and Exp - 3 of right leg of P 5, lateral view E Endp- 1 and Endp - 2 of left leg of P 5, posterior surface. Arrowheads indicate the important characteristic of the structure and Roman numerals on antennule correspond to ancestral segments. Scale bars: 200 μm (A, B); 50 μm (C-E)." figureDoi="10.3897/zookeys.1219.133132.figure8" httpUri="https://binary.pensoft.net/fig/1191525">8 A, B</figureCitation>
); ancestral segments II IV completely fused, representing evident segment II; ancestral segment XIV with hook-like transformed seta; ancestral segments XXI XXIII and XXIV XXV completely fused representing evident segment XIX and XX, respectively; ultimate segments ~ 1 / 3 of the length of pre-ultimate segment; armature formula as follows (Roman numerals correspond to ancestral segment): 1 +
<abbrev id="ABBRID0EAJAG" xlink_title="aesthetasc">ae</abbrev>
(I), 3 + 2 ae (II IV), 2 +
<abbrev id="ABBRID0EEJAG" xlink_title="aesthetasc">ae</abbrev>
(V), 2 (VI), 2 +
<abbrev id="ABBRID0EIJAG" xlink_title="aesthetasc">ae</abbrev>
(VII), 2 +
<abbrev id="ABBRID0EMJAG" xlink_title="aesthetasc">ae</abbrev>
(VIII), 2 +
<abbrev id="ABBRID0EQJAG" xlink_title="aesthetasc">ae</abbrev>
(IX), 2 +
<abbrev id="ABBRID0EUJAG" xlink_title="aesthetasc">ae</abbrev>
(X), 2 +
<abbrev id="ABBRID0EYJAG" xlink_title="aesthetasc">ae</abbrev>
(XI), 2 +
<abbrev id="ABBRID0E3JAG" xlink_title="aesthetasc">ae</abbrev>
(XII), 2 +
<abbrev id="ABBRID0EAKAG" xlink_title="aesthetasc">ae</abbrev>
(XIII); 1 hooked seta + 1 +
<abbrev id="ABBRID0EEKAG" xlink_title="aesthetasc">ae</abbrev>
(XIV), 2 +
<abbrev id="ABBRID0EIKAG" xlink_title="aesthetasc">ae</abbrev>
(XV), 2 +
<abbrev id="ABBRID0EMKAG" xlink_title="aesthetasc">ae</abbrev>
(XVI), 2 +
<abbrev id="ABBRID0EQKAG" xlink_title="aesthetasc">ae</abbrev>
(XVII), 2 +
<abbrev id="ABBRID0EUKAG" xlink_title="aesthetasc">ae</abbrev>
(XVIII), 1 +
<abbrev id="ABBRID0EYKAG" xlink_title="aesthetasc">ae</abbrev>
(XIX), 1 (XX), 1 +
<abbrev id="ABBRID0E3KAG" xlink_title="aesthetasc">ae</abbrev>
(XXI XXIII), 4 +
<abbrev id="ABBRID0EALAG" xlink_title="aesthetasc">ae</abbrev>
(XXIV XXV), 2 (XXVI), 5 +
<abbrev id="ABBRID0EELAG" xlink_title="aesthetasc">ae</abbrev>
(XXVII XXVIII).
</paragraph>
<caption id="D9D3F2A895D4A4A0A1C795FBF27873D1" ID-DOI="10.3897/zookeys.1219.133132.figure8" ID-arpha="FD925618-13A7-54C0-8B60-4AA531866C71" httpUri="https://binary.pensoft.net/fig/1191525" startId="F8">
<paragraph id="244DFBBC8F78E283CEE9F7DB7B0CEB3E">
<label id="C528FE950F26C4B4DFF457CAEC20FCDC">Figure 8.</label>
</paragraph>
<paragraph id="6617EC6F8FA60940006B5C5858BC498B">
<taxonomicName id="7F2D7AFD7A1BD8AA667B968481905EEC" authorityName="Boonyanusith &amp; Wongkamhaeng &amp; Azman" authorityYear="2024" class="Copepoda" family="Epacteriscidae" genus="Sipadantonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="species" species="roihani" status="gen. et sp. nov.">
<emphasis id="10029C510C0F92AE6AEFA02E27CD4B19" italics="true">Sipadantonius roihani</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A0F92CCDD0608E249CEC4529BE411383" rank="species">gen. et sp. nov.</taxonomicNameLabel>
male:
<emphasis id="94703BDD85EFB63BEB19FAD77A1EFE5D" bold="true">A</emphasis>
segments 115 of antennule, with picture of segment 12 that aesthetasc is removed
<emphasis id="D4FBD3336762DE782B1D41FA7340089A" bold="true">B</emphasis>
segments 1622 of antennule
<emphasis id="75AB2C3636E34E464FC97C546268431E" bold="true">C</emphasis>
P 5 furcal view
<emphasis id="342CFE648D65DD625395A89886608C9F" bold="true">D</emphasis>
<abbrev id="ABBRID0EDMAG" xlink_title="exopod">Exp</abbrev>
- 2 and
<abbrev id="ABBRID0EHMAG" xlink_title="exopod">Exp</abbrev>
- 3 of right leg of P 5, lateral view
<emphasis id="F5C674292D9DFDBE854B0D4E503EC6A8" bold="true">E</emphasis>
<abbrev id="ABBRID0ENMAG" xlink_title="proximal (middle, distal) segment of the endopod of the swimming legs">Endp- 1</abbrev>
and
<abbrev id="ABBRID0ERMAG" xlink_title="endopod">Endp</abbrev>
- 2 of left leg of P 5, posterior surface. Arrowheads indicate the important characteristic of the structure and Roman numerals on antennule correspond to ancestral segments. Scale bars: 200 μm (
<emphasis id="A36D56B241A1BC7174580ABE1077F03F" bold="true">A, B</emphasis>
); 50 μm (
<emphasis id="D594E1E45050E0949D491FDAA73D02F1" bold="true">C-E</emphasis>
).
</paragraph>
</caption>
<paragraph id="BB2078B0D8E039029774A23C29D3442C">
Antenna, mandible, maxillula, maxilla, maxilliped, and
<abbrev id="ABBRID0EANAG" xlink_title="first to sixth swimming legs">P 1</abbrev>
- P 4 as those of female.
</paragraph>
<paragraph id="B7B2C60F4EF3AF994AEF66B8EAC34F66">
P 5 (Fig.
<figureCitation id="20B009B4B8ABDFE1C52549A6F097CF5B" captionStart="Figure 8" captionStartId="F8" captionText="Figure 8. Sipadantonius roihani gen. et sp. nov. male: A segments 115 of antennule, with picture of segment 12 that aesthetasc is removed B segments 1622 of antennule C P 5 furcal view D Exp - 2 and Exp - 3 of right leg of P 5, lateral view E Endp- 1 and Endp - 2 of left leg of P 5, posterior surface. Arrowheads indicate the important characteristic of the structure and Roman numerals on antennule correspond to ancestral segments. Scale bars: 200 μm (A, B); 50 μm (C-E)." figureDoi="10.3897/zookeys.1219.133132.figure8" httpUri="https://binary.pensoft.net/fig/1191525">8 C-E</figureCitation>
) biramous, asymmetrical. intercoxal sclerite as described for female P 3; coxa lacking medial seta. Left leg biramous; coxa and basis as shown;
<abbrev id="ABBRID0EKNAG" xlink_title="exopod">Exp</abbrev>
and
<abbrev id="ABBRID0EONAG" xlink_title="endopod">Endp</abbrev>
three-segmented each.
<abbrev id="ABBRID0ESNAG" xlink_title="proximal (middle, distal) segment of the exopod of the swimming legs">Exp- 1</abbrev>
lacking inner seta, with conical, smooth outer spine;
<abbrev id="ABBRID0EWNAG" xlink_title="exopod">Exp</abbrev>
- 2 transformed, with claw-like extension on medial margin and conical, smooth outer spine;
<abbrev id="ABBRID0E1NAG" xlink_title="exopod">Exp</abbrev>
- 3 with conical, smooth subapical spine and minute apical spine, with claw-like cuticular expansion at base (Fig.
<figureCitation id="814917143AA2716B4790F31B502F4101" captionStart="Figure 8" captionStartId="F8" captionText="Figure 8. Sipadantonius roihani gen. et sp. nov. male: A segments 115 of antennule, with picture of segment 12 that aesthetasc is removed B segments 1622 of antennule C P 5 furcal view D Exp - 2 and Exp - 3 of right leg of P 5, lateral view E Endp- 1 and Endp - 2 of left leg of P 5, posterior surface. Arrowheads indicate the important characteristic of the structure and Roman numerals on antennule correspond to ancestral segments. Scale bars: 200 μm (A, B); 50 μm (C-E)." figureDoi="10.3897/zookeys.1219.133132.figure8" httpUri="https://binary.pensoft.net/fig/1191525">8 C, D</figureCitation>
);
<abbrev id="ABBRID0ECOAG" xlink_title="endopod">Endp</abbrev>
inserted on medial socket of basis;
<abbrev id="ABBRID0EGOAG" xlink_title="proximal (middle, distal) segment of the endopod of the swimming legs">Endp- 1</abbrev>
without inner seta, anterior surface longer than posterior one;
<abbrev id="ABBRID0EKOAG" xlink_title="endopod">Endp</abbrev>
- 2 shorter than that of right leg, with inner seta;
<abbrev id="ABBRID0EOOAG" xlink_title="endopod">Endp</abbrev>
- 3 with six marginal setae and cuticular pore on anterior surface. Right leg biramous; coxa and basis as shown;
<abbrev id="ABBRID0ESOAG" xlink_title="exopod">Exp</abbrev>
and
<abbrev id="ABBRID0EWOAG" xlink_title="endopod">Endp</abbrev>
three-segmented each;
<abbrev id="ABBRID0E1OAG" xlink_title="proximal (middle, distal) segment of the exopod of the swimming legs">Exp- 1</abbrev>
and
<abbrev id="ABBRID0E5OAG" xlink_title="exopod">Exp</abbrev>
- 2 elongate, each with one outer spine, but lacking inner seta each;
<abbrev id="ABBRID0ECPAG" xlink_title="exopod">Exp</abbrev>
- 3 with apical spine fused to segment bearing it, with spine on both lateral and medial margin;
<abbrev id="ABBRID0EGPAG" xlink_title="proximal (middle, distal) segment of the endopod of the swimming legs">Endp- 1</abbrev>
as that of right leg;
<abbrev id="ABBRID0EKPAG" xlink_title="endopod">Endp</abbrev>
- 2 longer than that of left leg, with longitudinal groove on distolateral corner and inner seta;
<abbrev id="ABBRID0EOPAG" xlink_title="endopod">Endp</abbrev>
- 3 as that of right leg.
</paragraph>
</subSubSection>
<subSubSection id="SECID0ESPAG" type="variability">
<paragraph id="A67B1EAE68D1316417C02E5DD48B4BB3">
<heading id="0791DFE827861C5423CC0704EF535820" reason="title">Variability.</heading>
</paragraph>
<paragraph id="3AB1070322C8E7696778CA0D06A0D1F9">
Based on
<specimenCount id="96D040A898DDB90C2CBD7769C579F353" count="3" type="male">three male</specimenCount>
specimens, including the
<typeStatus id="9400B3A16A610E06AFC6441A759E98B9" type="allotype">allotype</typeStatus>
, the inner seta was absent from the right P 4
<abbrev id="ABBRID0EYPAG" xlink_title="proximal (middle, distal) segment of the exopod of the swimming legs">
Exp-
<quantity id="C84F073DF9DF07C70DAFAB09D6FE8192" metricMagnitude="-2" metricUnit="m" metricValue="2.54" unit="in" value="1.0">1 in</quantity>
</abbrev>
the
<typeStatus id="1082FEF8C08D45FE7727B4E5FC6020B6" type="allotype">allotype</typeStatus>
. There was no additional remarkable variation between the females and males.
</paragraph>
</subSubSection>
<subSubSection id="SECID0E3PAG" type="Abnormality">
<paragraph id="96133CC060B5F3A842A9B809947679E0">
<heading id="00C19266B583808756C1B036F6899A52" reason="title">Abnormality.</heading>
</paragraph>
<paragraph id="9DEA024733D8389E7301E4ACA945A53C">
There was a curved suture on the right side of the ventral surface of the genital somite in
<specimenCount id="21F32D6CCC03457BEC8F29BB08CB2D10" count="1" type="male">one male</specimenCount>
(Fig.
<figureCitation id="319DA735CF193255D00837606E70C3B3" captionStart="Figure 7" captionStartId="F7" captionText="Figure 7. Sipadantonius roihani gen. et sp. nov. female (A) and male (B-D): A P 5 B habitus, dorsal view C habitus, lateral view D urosome, ventral view. Arrow indicates the ventral suture on genital somite. Scale bars: 50 μm (A, D); 200 μm (B, C)." figureDoi="10.3897/zookeys.1219.133132.figure7" httpUri="https://binary.pensoft.net/fig/1191524">7 D</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="SECID0EGQAG" type="etymology">
<paragraph id="FF20D65E744B31F754E7BAF60A0DB7D2">
<heading id="6551D6E5A6F39F11C13570BA624170F1" reason="title">Etymology.</heading>
</paragraph>
<paragraph id="941C84585C93EDBA68EDC68DEA1ABCA6">
The specific epithet was conferred in honour of Mr Roihan Han, a Malaysian deep dive record holder (at a depth of
<quantity id="9D44AECC998D35CA7BE4DCE97E35A2EB" metricMagnitude="2" metricUnit="m" metricValue="1.64" unit="m" value="164.0">164 m</quantity>
), who also led the Turtle Tomb exploration activity. Consequently, the name is a noun in the genitive singular.
</paragraph>
</subSubSection>
<subSubSection id="SECID0ELQAG" type="Differential diagnosis and remarks">
<paragraph id="B592A64DDC26B449D4F67552C21F0BFE">
<heading id="D702860F5A0BB50153C17F9758D67611" reason="title">Differential diagnosis and remarks.</heading>
</paragraph>
<paragraph id="4E420687CCC34D05CFA8F9629F5FD5B0">
The new taxon belonged to the superfamily
<taxonomicName id="5AE57600ACF16DF37BBEC49CC3CF1825" authority="Giesbrecht, 1893" authorityName="Giesbrecht" authorityYear="1893" class="Copepoda" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="superFamily" superFamily="Pseudocyclopoidea">Pseudocyclopoidea Giesbrecht, 1893</taxonomicName>
, indicated by the following diagnostic characteristics mentioned in
<bibRefCitation id="81AD53202262DEBB6DFB54C6868D050B" DOI="10.1111/zoj.12141" author="Bradford-Grieve JM &amp; Boxshall GA &amp; Blanco-Bercial L" etAl="et al." firstAuthor="Bradford-Grieve" journalOrPublisher="Zoological Journal of the Linnean Society" pagination="507-533" refId="B15" refString="Bradford-Grieve JM, Boxshall GA, Blanco-Bercial L (2014) Revision of basal calanoid copepod families, with a description of a new species and genus of Pseudocyclopidae. Zoological Journal of the Linnean Society 171: 507533. https://doi.org/10.1111/zoj.12141" title="Revision of basal calanoid copepod families, with a description of a new species and genus of Pseudocyclopidae." volume="171" year="2014">Bradford-Grieve et al. (2014)</bibRefCitation>
:
</paragraph>
<list id="30A23F98A662E2A84236131D0B16422A" list-type="order">
<paragraph id="7C1EAA18DF3ABE6AB6AC7794A1FAF7B2">
<list-item id="AC4C57FACEC99E05466240556A920580">fully developed the arthrodial membrane between body somites and limb segments,</list-item>
</paragraph>
<paragraph id="EC48419432BE9F62C31FABEBE66C36FB">
<list-item id="D4FB5B11D114183973A1299125CC4E59">identical configuration of mouthparts in both sexes,</list-item>
</paragraph>
<paragraph id="F5BB869D9D43BEAD2418F71551248A36">
<list-item id="B70E183E44EAF2E358E9EE2C0C82DE41">segments I-VIII of Exp of the antenna with one seta each,</list-item>
</paragraph>
<paragraph id="7079B6B6BC59388626CC868FC0C2CB15">
<list-item id="802C1006F399FA51BF74F9572A07A4FD">segment V of Endp of maxilliped with outer seta,</list-item>
</paragraph>
<paragraph id="4F98D14A4E76B85F6B0BDB24C3D7AFFC">
<list-item id="A434AC4A72239234AEE881F98D05A887">right antennule of the male geniculate,</list-item>
</paragraph>
<paragraph id="4E10E1267FD412369765377ADD7FB891">
<list-item id="A7D91175C587520D20E576967162385B">P 1 P 5 with both three-segmented rami,</list-item>
</paragraph>
<paragraph id="93A666E3EA38D1238107F01F5021E2EB">
<list-item id="32529A3AB58840D41573FAD71F21408D">Exp- 3 of P 1 P 5 with two, two, three, three, and three outer spines, respectively.</list-item>
</paragraph>
</list>
<paragraph id="F827AE705F0D764B8BB5E6C17BECDF0B">
<taxonomicName id="65E18966303E40A4102A2D696FC5E6ED" authority="Fosshagen, 1973" authorityName="Fosshagen" authorityYear="1973" class="Copepoda" family="Epacteriscidae" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">
Epacteriscidae
<bibRefCitation id="68104E5756685A89891BCDF207782169" DOI="10.1080/00364827.1973.10411237" author="Fosshagen A" journalOrPublisher="Sarsia" pagination="145-154" refId="B20" refString="Fosshagen A (1973) A new genus and species of bottom living calanoid (Copepoda) from Florida and Columbia. Sarsia 52: 145 - 154. https: // doi. org / 10.1080 / 00364827.1973. 10411237" title="A new genus and species of bottom living calanoid (Copepoda) from Florida and Columbia." volume="52" year="1973">Fosshagen, 1973</bibRefCitation>
</taxonomicName>
and
<taxonomicName id="CB6B302F11FBEA23444193B71176EF83" authority="Giesbrecht, 1893" authorityName="Giesbrecht" authorityYear="1893" class="Copepoda" family="Pseudocyclopidae" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Pseudocyclopidae Giesbrecht, 1893</taxonomicName>
(
<bibRefCitation id="20DB97ECF97B2A843F1AB28452980895" DOI="10.1111/zoj.12141" author="Bradford-Grieve" etAl="et al." firstAuthor="Bradford-Grieve" journalOrPublisher="Zoological Journal of the Linnean Society" pagination="507-533" refId="B15" refString="Bradford-Grieve JM, Boxshall GA, Blanco-Bercial L (2014) Revision of basal calanoid copepod families, with a description of a new species and genus of Pseudocyclopidae. Zoological Journal of the Linnean Society 171: 507533. https://doi.org/10.1111/zoj.12141" title="Revision of basal calanoid copepod families, with a description of a new species and genus of Pseudocyclopidae." volume="171" year="2014">Bradford-Grieve et al. 2014</bibRefCitation>
) are two families of primitive calanoid fauna that have been recently accepted within it. Among these two taxa,
<taxonomicName id="18C78842D276E2D4C2A30C041D994D45" authorityName="Fosshagen" authorityYear="1973" class="Copepoda" family="Epacteriscidae" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Epacteriscidae</taxonomicName>
is the basal calanoid fauna from a phylogenetic perspective (
<bibRefCitation id="285C9692237D0C1785867238F43798E6" DOI="10.1071/IS10007" author="Bradford-Grieve" etAl="et al." firstAuthor="Bradford-Grieve" issue="3" journalOrPublisher="Invertebrate Systematics" pagination="291-321" refId="B14" refString="Bradford-Grieve JM, Boxshall GA, Ahyong ST, Ohtsuka S (2010) Cladistic analysis of the calanoid Copepoda. Invertebrate Systematics 24 (3): 291321. https://doi.org/10.1071/IS10007" title="Cladistic analysis of the calanoid Copepoda." volume="24" year="2010">Bradford-Grieve et al. 2010</bibRefCitation>
).
</paragraph>
<paragraph id="7527B0FC5AAE23A1F96195F3924DBDFB">
Following the recent morphological examination, the new species demonstrated a close affinity to the family
<taxonomicName id="E039354E907E77A1486B84C7BEB2B89C" authorityName="Giesbrecht" authorityYear="1893" class="Copepoda" family="Pseudocyclopidae" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Pseudocyclopidae</taxonomicName>
through the presence of the following shared characteristics:
</paragraph>
<list id="E24E4AC870CCB7C75105AB449B2BFA6B" list-type="order">
<paragraph id="4B11B6A733D7F4F5134AA8045F895B6B">
<list-item id="75A3C74B1D854964FB349AC06EF0B380">rostrum single plate with a rounded tip and without rostral filaments,</list-item>
</paragraph>
<paragraph id="970BB772B8600E37515FE9D8B1C13CA3">
<list-item id="D513186E850ADAB0EA6B9CEC3D2B1C60">furcal ramus symmetrical and without modification of the left furcal seta VI,</list-item>
</paragraph>
<paragraph id="3D4E1DFBD4735D055DE8E3D62A9143B6">
<list-item id="B8006A36474409C0400F74BE59036590">mandibles with well-developed Endp forming the main axis of the mandibular palp,</list-item>
</paragraph>
<paragraph id="D9848597E96118B699765CF73AD3D329">
<list-item id="D41E55E137498A7C03EE07090819825C">maxillulae with marginal setae IX on coxal epipodite,</list-item>
</paragraph>
<paragraph id="F081BC574842DEB0EB2BE27FD462C968">
<list-item id="C98421D10188D11C861F1057FA93527D">maxillipeds with normally developed endopod segments II-VI longer than coxa,</list-item>
</paragraph>
<paragraph id="9E429D6D6E7B844100FBC85F0A5BA33D">
<list-item id="05AAA6EB98515CB75BE5F64A1E9AA133">distolateral corner of Exp- 2 the female P 5 extended,</list-item>
</paragraph>
<paragraph id="0085727A66A312A4454C8F5D8C8DA96E">
<list-item id="EC125E59B84DA3F257B5EA641CF0D6E9">Exp- 2 of the female P 5 offset in oblique angle to the main axis of the rami.</list-item>
</paragraph>
<paragraph id="AA3EEA2F5566AACB04409F39D9D9F05F">
<list-item id="22944494024964758E9964255DB02D6D">Exp- 2 of the left leg of the male P 5 with the inner process.</list-item>
</paragraph>
</list>
<paragraph id="6B94A4B4AD9FC6ACBEDDCF0B80548F10">
It was noted that the new species exhibited an affinity to the family
<taxonomicName id="5ABFD207145DC142A1094DEF4B12BE66" authorityName="Fosshagen" authorityYear="1973" class="Copepoda" family="Epacteriscidae" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Epacteriscidae</taxonomicName>
, characterised by the presence of aesthetasc on the ancestral segment IV of the antennule and the absence of inner process on
<abbrev id="ABBRID0EUSAG" xlink_title="exopod">Exp</abbrev>
- 2 of the right leg of the male P 5. Furthermore, a combination of the presence of aesthetasc on the ancestral segment XIX of antennule in both sexes and the presence of aesthetasc on the ancestral segment XX of the female antennule, as identified in the new species, had been observed exclusively in
<taxonomicName id="D009536BA87FF5FA152FB300EB230320" authority="Fosshagen &amp; Iliffe, 2007" authorityName="Fosshagen &amp; Iliffe" authorityYear="2007" class="Copepoda" family="Epacteriscidae" genus="Caiconectes" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="06DDB6C5B1927AA4A6BF16A168894075" italics="true">Caiconectes</emphasis>
<bibRefCitation id="9F1701BD899BA52EB7ECF945E5A2F53B" DOI="10.1080/17451000701274571" author="Fosshagen A &amp; Iliffe TM" journalOrPublisher="Marine Biology Research" pagination="37-92" refId="B29" refString="Fosshagen A, Iliffe TM (2007) New species of epacteriscids (Copepoda, Calanoida) from anchialine caves in the Caicos Islands and the Bahamas. Marine Biology Research 3: 37 - 92. https: // doi. org / 10.1080 / 17451000701274571" title="New species of epacteriscids (Copepoda, Calanoida) from anchialine caves in the Caicos Islands and the Bahamas." volume="3" year="2007">Fosshagen &amp; Iliffe, 2007</bibRefCitation>
</taxonomicName>
. Nevertheless, the new species could not be classified as a member of this family due to its lack of a bilobed rostrum, rostral filament, and raptorial-adaptive features of mouthparts. An example of the last characteristic was the enlargement of the ventral teeth (e. g.,
<bibRefCitation id="A23F082974A78780444B9107E0440023" DOI="10.1080/00364827.2001.10425520" author="Fosshagen" etAl="et al." firstAuthor="Fosshagen" journalOrPublisher="Sarsia" pagination="245-318" refId="B30" refString="Fosshagen A, Boxshall BG, Iliffe TM (2001) The Epacteriscidae, a cave-living family of calanoid copepods. Sarsia 86: 245318. https://doi.org/10.1080/00364827.2001.10425520" title="The Epacteriscidae, a cave-living family of calanoid copepods." volume="86" year="2001">Fosshagen et al. 2001</bibRefCitation>
;
<bibRefCitation id="91C14050B03D68F81AE2539B934DCB1A" DOI="10.1080/17451000701274571" author="Fosshagen and Iliffe" firstAuthor="Fosshagen" journalOrPublisher="Marine Biology Research" pagination="37-92" refId="B29" refString="Fosshagen A, Iliffe TM (2007) New species of epacteriscids (Copepoda, Calanoida) from anchialine caves in the Caicos Islands and the Bahamas. Marine Biology Research 3: 3792. https://doi.org/10.1080/17451000701274571" title="New species of epacteriscids (Copepoda, Calanoida) from anchialine caves in the Caicos Islands and the Bahamas." volume="3" year="2007">Fosshagen and Iliffe 2007</bibRefCitation>
). In light of this, the presence of the aesthetasc on the ancestral segment XX of the female antennule was probably convergent among the new species and
<taxonomicName id="E6983A2F57BDCDFF8CF846C16092F487" authorityName="Fosshagen &amp; Iliffe" authorityYear="2007" class="Copepoda" family="Epacteriscidae" genus="Caiconectes" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="DE364B20F9AD9434A107E71E67DC612F" italics="true">Caiconectes</emphasis>
</taxonomicName>
. The taxonomic placement of the latter genus remained uncertain, having been more recently classified as incerta sedis. The assumption that
<taxonomicName id="2B9474E1E2B971D392A252A4B09A6B67" authorityName="Fosshagen &amp; Iliffe" authorityYear="2007" class="Copepoda" family="Epacteriscidae" genus="Caiconectes" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="9D2906BBD690EF314C89862F7F5FBF6A" italics="true">Caiconectes</emphasis>
</taxonomicName>
belonged to the
<taxonomicName id="F74963E1477A33C0D3FA41063DDFD097" authorityName="Fosshagen" authorityYear="1973" class="Copepoda" family="Epacteriscidae" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Epacteriscidae</taxonomicName>
phylogenetic lineage, whereas the new species belonged to the
<taxonomicName id="D1BF87624DE6F57DC1BEAD415A25F39E" authorityName="Giesbrecht" authorityYear="1893" class="Copepoda" family="Pseudocyclopidae" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Pseudocyclopidae</taxonomicName>
lineage, was supported by the differences observed in the following characteristics between the new species and
<taxonomicName id="2BA27DDB4F076DBA059F30FB7B04828F" authorityName="Fosshagen &amp; Iliffe" authorityYear="2007" class="Copepoda" family="Epacteriscidae" genus="Caiconectes" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="03F34A1634187449673A2F9D0436764D" italics="true">Caiconectes</emphasis>
</taxonomicName>
: configuration of the rostrum, feeding mode adaptive feature of mouthparts, ornamentation of the distolateral corner of the
<abbrev id="ABBRID0EGUAG" xlink_title="first to sixth swimming legs">P 1</abbrev>
<abbrev id="ABBRID0EKUAG" xlink_title="exopod">Exp</abbrev>
- 2.
</paragraph>
<paragraph id="8ACF4D63A51894AB6252FC07BF93F5C3">
Consequently, the placement of the new species within the superfamily
<taxonomicName id="69133B55F0B4B719F97226559077C7D0" authorityName="Giesbrecht" authorityYear="1893" class="Copepoda" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="superFamily" superFamily="Pseudocyclopoidea">Pseudocyclopoidea</taxonomicName>
and the family
<taxonomicName id="3EED255AF62184A8AEB348E33AAE2DF0" authorityName="Giesbrecht" authorityYear="1893" class="Copepoda" family="Pseudocyclopidae" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Pseudocyclopidae</taxonomicName>
was deemed justified. It was suggested that the presence of aesthetasc on ancestral segment IV of the female antennule and the absence of inner process on
<abbrev id="ABBRID0E1UAG" xlink_title="exopod">Exp</abbrev>
- 2 of the right leg of the male P 5 constituted merely an occasional occurrence of the characteristic within the representatives of the justified family. Following the synonymisation of the families
<taxonomicName id="44DD26638C139A1F2FE9B8B4521B43A1" class="Copepoda" family="Boholinidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Boholinidae</taxonomicName>
and
<taxonomicName id="F5A7F110005CF78E0D95F3B6F829C457" class="Copepoda" family="Ridgewayiidae" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Ridgewayiidae</taxonomicName>
with the family
<taxonomicName id="DB87ECE5F69F505A02CD813989FE97BA" authorityName="Giesbrecht" authorityYear="1893" class="Copepoda" family="Pseudocyclopidae" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Pseudocyclopidae</taxonomicName>
, 14 calanoid genera were included. The genera
<taxonomicName id="BFD70FD2AB6F5D359D93D3049AC7EDF6" class="Copepoda" family="Pseudocyclopidae" genus="Boholina" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="7FECAB7B6D672A1C52AC41C24A639004" italics="true">Boholina</emphasis>
</taxonomicName>
,
<taxonomicName id="DB21C79EA1B5DDC94E9E403732669585" authorityName="Fosshagen" authorityYear="1970" class="Copepoda" family="Pseudocyclopidae" genus="Exumella" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="501F7EAF2DDAA60DEFAD55FE9009B828" italics="true">Exumella</emphasis>
</taxonomicName>
,
<taxonomicName id="0A4503B79DCBF293B232E77FFF4B8195" authorityName="Fosshagen" authorityYear="1970" class="Copepoda" family="Pseudocyclopidae" genus="Placocalanus" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="B6B579475D70DD4EA72A70D41C7481DA" italics="true">Placocalanus</emphasis>
</taxonomicName>
,
<taxonomicName id="BC5C89FDC538808687EEC7CF9F1D20D9" authorityName="Brady" authorityYear="1872" class="Copepoda" family="Pseudocyclopidae" genus="Pseudocyclops" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="F413BF9CD9BE5737C950620FFEA403DF" italics="true">Pseudocyclops</emphasis>
</taxonomicName>
and
<taxonomicName id="8C608904A15296E2417F57FB2724E09D" class="Copepoda" family="Pseudocyclopidae" genus="Ridgewayia" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="71CA8B2581EB5D8A6162696AD9933DD4" italics="true">Ridgewayia</emphasis>
</taxonomicName>
are polytypic; whereas the remaining genera are monotypic, represented by one species. Among these genera, the monotypic genus
<taxonomicName id="2BFA236B627BFD94C05C7AE25BACC4A2" authorityName="Bradford-Grieve, Boxshall &amp; Blanco-Bercial" authorityYear="2014" class="Copepoda" family="Pseudocyclopidae" genus="Pinkertonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="65AFFE6835C7A7C68DC7032AA8B8697D" italics="true">Pinkertonius</emphasis>
</taxonomicName>
is considered the basal taxon. The phylogenetic study indicated four characteristics that distinguished
<taxonomicName id="7A917FF48D12932BE556CEB579DAF145" authorityName="Bradford-Grieve, Boxshall &amp; Blanco-Bercial" authorityYear="2014" class="Copepoda" family="Pseudocyclopidae" genus="Pinkertonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="8B8664702BD78875AB172D62B114F1B5" italics="true">Pinkertonius</emphasis>
</taxonomicName>
from other genera: (1) the separation of ancestral segments II and III of the female antennule, (2) the presence of aesthetasc on the ancestral segment IV of the male antennule, (3) the presence of medial seta 4 on the female P 5
<abbrev id="ABBRID0E5WAG" xlink_title="exopod">Exp</abbrev>
- 3, and (4) the separation of
<abbrev id="ABBRID0ECXAG" xlink_title="exopod">Exp</abbrev>
- 2 and
<abbrev id="ABBRID0EGXAG" xlink_title="exopod">Exp</abbrev>
- 3 of both rami of the male P 5. Based on the aforementioned characteristics, the new species represented one of the phylogenetic transitional stages between the genus
<taxonomicName id="CF686207AB6A894C488A4A6632C04ECD" authorityName="Bradford-Grieve, Boxshall &amp; Blanco-Bercial" authorityYear="2014" class="Copepoda" family="Pseudocyclopidae" genus="Pinkertonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="120A63F0DA581485A956402FFBEDB845" italics="true">Pinkertonius</emphasis>
</taxonomicName>
and other genera, as the same conditions of characteristics (2), (3), and (4) were present in the new species with separated ancestral segments II and III of the female antennule. Other characteristics shared by the new species and
<taxonomicName id="7EC0B14D95BE69428BB2D55C6EAD9875" authority="Bradford-Grieve, Boxshall &amp; Branco-Bercial, 2014" authorityName="Bradford-Grieve, Boxshall &amp; Branco-Bercial" authorityYear="2014" class="Copepoda" family="Pseudocyclopidae" genus="Pinkertonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="species" species="ambiguus">
<emphasis id="DF67F34F591D6E73D5F899089751A701" italics="true">Pinkertonius ambiguus</emphasis>
Bradford-Grieve, Boxshall &amp; Branco-Bercial, 2014
</taxonomicName>
included (1) the shape and the armament of
<abbrev id="ABBRID0E3XAG" xlink_title="exopod">Exp</abbrev>
- 3 and
<abbrev id="ABBRID0EAYAG" xlink_title="endopod">Endp</abbrev>
of the right leg of the male P 5, (2) the absence of armature element of maxillular basal exite, and (3) the relative length of ancestral segment XXVII of antennule.
</paragraph>
<paragraph id="180F2DAAA2F6486AFDF4F18626FCCA0E">
Nevertheless, the new species was unable to be classified as a member of the genus
<taxonomicName id="35D4A35210720218C01ABFB740763940" authorityName="Bradford-Grieve, Boxshall &amp; Blanco-Bercial" authorityYear="2014" class="Copepoda" family="Pseudocyclopidae" genus="Pinkertonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus">
<emphasis id="1E98E9E5909AE3A6B4C9132CC74BFD16" italics="true">Pinkertonius</emphasis>
</taxonomicName>
and all genera of the family
<taxonomicName id="B23D2D461C4C08F7D237C9E893ECB1EA" authorityName="Giesbrecht" authorityYear="1893" class="Copepoda" family="Pseudocyclopidae" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Pseudocyclopidae</taxonomicName>
based on the combination of the following characteristics:
</paragraph>
<list id="FF8415B47049046AB254141387620697" list-type="order">
<paragraph id="04867DB507D292CB61A965F59EF8B310">
<list-item id="2645241DAE3E0CA3D14495AA3DC622D3">furcal rami lacking seta III,</list-item>
</paragraph>
<paragraph id="09BA9F5289993D0E683E2A0EE5944D00">
<list-item id="00A15D05C740D00C06FAE1E820062E15">furcal seta VII inserted beside seta VI rather than in front of the seta V or seta VI,</list-item>
</paragraph>
<paragraph id="94C3EEB100D2D1ED3BB3CF3A3F15C0E8">
<list-item id="5B0EC1C3206583622C31A448DE754B68">antennule with aesthetasc on ancestral segment IV in both sexes,</list-item>
</paragraph>
<paragraph id="2D0CBEAB84E1D213524DF18FB03ADF69">
<list-item id="9E5937CFE302BDEC1C30ED24E48FF18C">ancestral segments XIX-XXIII of the male antennule without modified setae</list-item>
</paragraph>
<paragraph id="4A2F69422CF45794182C3BE82DAA0DB7">
<list-item id="27E247CB3DD3BED1A54D2876E77151ED">maxillulae with six setae on coxal endite,</list-item>
</paragraph>
<paragraph id="240489DBBEE391634A573B602136DD3E">
<list-item id="87F6E4A1DAFB63B03D436B0B4EF9B537">seta 4 of the endopodal segment II of maxilliped transformed,</list-item>
</paragraph>
<paragraph id="0D9836922426346C9193DB6BA7288C3E">
<list-item id="BA841EC28E929A4CF7BE892667A464D7">basis of P 1 - P 5 without lateral seta,</list-item>
</paragraph>
<paragraph id="240380EF95E9B90A3062C1569CF95FD7">
<list-item id="579730327EBF47D32B223F5C71612557">the male P 5 Endp- 1 lacking inner seta,</list-item>
</paragraph>
<paragraph id="BD1B1B52566A2B77FA4DE1367A7CCD27">
<list-item id="47C3031BACBC0033309FFDF053081477">the right leg of the male P 5 lacks process on the inner margin of Exp- 2.</list-item>
</paragraph>
</list>
<paragraph id="D31C867CEEE62B7FFAAAA9C4A7BAD153">
Consequently, the new generic rank
<taxonomicName id="7FE22F220E461CE3FC606852043A8080" authorityName="Boonyanusith &amp; Wongkamhaeng &amp; Azman" authorityYear="2024" class="Copepoda" family="Epacteriscidae" genus="Sipadantonius" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="genus" status="gen. nov.">
<emphasis id="E84F5120593D18AFD536EFB9D18F6233" italics="true">Sipadantonius</emphasis>
</taxonomicName>
<taxonomicNameLabel id="4FC86688610581AC7874A1A9923DA5DE" rank="genus">gen. nov.</taxonomicNameLabel>
was established within the family
<taxonomicName id="711C5D528241929C9198223FB3038ED0" authorityName="Giesbrecht" authorityYear="1893" class="Copepoda" family="Pseudocyclopidae" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Pseudocyclopidae</taxonomicName>
, intended to accommodate the new calanoid species from the Turtle Tomb of Sipadan Island,
<collectingRegion id="E3AE643E9DEC4CCF47C3E03BF03BD634" country="Malaysia" name="Sabah">Sabah</collectingRegion>
,
<collectingCountry id="721FCBD229FA4E92AC4FDBDB2BA3C306" name="Malaysia">Malaysia</collectingCountry>
. Furthermore, the female exhibited the most plesiomorphic characteristics of the family
<taxonomicName id="DED9176BB32E9427C4F4E7975F0CF3FF" authorityName="Giesbrecht" authorityYear="1893" class="Copepoda" family="Pseudocyclopidae" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="family">Pseudocyclopidae</taxonomicName>
by having aesthetascs on the ancestral segments IV and XX of antennule and six setae on the maxillular coxal endite. The number of setae on the maxillular coxal endite in
<taxonomicName id="7AA26444EE075E5F5A23783C55A2C9FB" authorityName="Sars" authorityYear="1903" class="Copepoda" kingdom="Animalia" order="Calanoida" phylum="Arthropoda" rank="order">Calanoida</taxonomicName>
exhibited variability; however, it was noted that there had never been more than five setae (
<bibRefCitation id="BDFD928D56909F883D848AA88248EDCE" author="Boxshall and Halsey" firstAuthor="Boxshall" journalOrPublisher="The Ray Society, London" refId="B11" refString="Boxshall GA, Halsey SH (2004) An Introduction to Copepod Diversity. The Ray Society, London, 966 pp." title="An Introduction to Copepod Diversity." year="2004">Boxshall and Halsey 2004</bibRefCitation>
). To date, the presence of six elements on the coxal endite was recorded in the order
<taxonomicName id="5F8C271D7BE29613C282AEAAAF44DEFC" authority="Gurney, 1933" authorityName="Gurney" authorityYear="1933" class="Copepoda" kingdom="Animalia" order="Misophrioida" phylum="Arthropoda" rank="order">Misophrioida Gurney, 1933</taxonomicName>
, as well as the families
<taxonomicName id="3FE598B9C0F7101A9C9A5CA11987742F" authority="Lang, 1944" authorityName="Lang" authorityYear="1944" class="Copepoda" family="Canuellidae" kingdom="Animalia" order="Polyarthra" phylum="Arthropoda" rank="family">Canuellidae Lang, 1944</taxonomicName>
and
<taxonomicName id="0D2F6B0AC359D461C65276F4847AD430" authority="Boeck, 1865" authorityName="Boeck" authorityYear="1865" class="Copepoda" family="Longipediidae" kingdom="Animalia" order="Polyarthra" phylum="Arthropoda" rank="family">Longipediidae Boeck, 1865</taxonomicName>
(
<bibRefCitation id="968414144685A2B61F6E593275DF86A8" author="Boxshall and Halsey" firstAuthor="Boxshall" journalOrPublisher="The Ray Society, London" refId="B11" refString="Boxshall GA, Halsey SH (2004) An Introduction to Copepod Diversity. The Ray Society, London, 966 pp." title="An Introduction to Copepod Diversity." year="2004">Boxshall and Halsey 2004</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>