156 lines
20 KiB
XML
156 lines
20 KiB
XML
<document id="312CC2BB7332C643D300480392039BB0" ID-CLB-Dataset="28347" ID-DOI="10.11646/zootaxa.4567.3.1" ID-GBIF-Dataset="47813581-d217-4a19-8848-a3e9cf2ddaf4" ID-ISSN="1175-5326" ID-Zenodo-Dep="2598945" ID-ZooBank="0AEFAF80-B001-4A18-88AC-5B6A189F6DCD" IM.bibliography_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1553062614686" checkinUser="plazi" docAuthor="Staples, David A." docDate="2019" docId="03895C33290A4F1AFF01FE9AFB4EFF28" docLanguage="en" docName="zootaxa.4567.3.1.pdf" docOrigin="Zootaxa 4567 (3)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Rhynchothorax coralensis Staples 2019, sp. nov." docType="treatment" docVersion="8" lastPageNumber="430" masterDocId="FFB0244B29114F07FF96FFB2FF80FFFD" masterDocTitle="Pycnogonids (Arthropoda, Pycnogonida) from the Southwest Indian Ridge" masterLastPageNumber="449" masterPageNumber="401" pageNumber="428" updateTime="1698701998649" updateUser="ExternalLinkService">
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<mods:title id="55DDD273B9B2FA3BCE6070FD98AC34A2">Pycnogonids (Arthropoda, Pycnogonida) from the Southwest Indian Ridge</mods:title>
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<mods:name id="41EA6F621CD042562F6D9E76B5ED4F1F" type="personal">
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<mods:namePart id="52E82621B57EEED3A0B415808DB816B7">Staples, David A.</mods:namePart>
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<mods:title id="11E4B80A04B3092B3F200C0CA9520BFF">Zootaxa</mods:title>
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<mods:part id="A61EC6F154835A2A74957FEDE9823D61">
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<mods:date id="0FB698817080D261A0FF95242CF2FB60">2019</mods:date>
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<mods:number id="0A103C91A02DAA0125221E2F2DB2FF99">2019-03-18</mods:number>
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<mods:number id="7BB24092CD35F972FB1EA9209AC4AB3C">4567</mods:number>
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<mods:identifier id="A6C0FF82A806C650FC30FED988A0BBCC" type="DOI">10.11646/zootaxa.4567.3.1</mods:identifier>
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<treatment id="03895C33290A4F1AFF01FE9AFB4EFF28" ID-DOI="http://doi.org/10.5281/zenodo.5944902" ID-GBIF-Taxon="154435139" ID-Zenodo-Dep="5944902" LSID="urn:lsid:plazi:treatment:03895C33290A4F1AFF01FE9AFB4EFF28" httpUri="http://treatment.plazi.org/id/03895C33290A4F1AFF01FE9AFB4EFF28" lastPageId="29" lastPageNumber="430" pageId="27" pageNumber="428">
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<subSubSection id="C33ABEAE290A4F1CFF01FE9AFE43FE9F" pageId="27" pageNumber="428" type="nomenclature">
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<paragraph id="8B9FED25290A4F1CFF01FE9AFDBAFEBF" blockId="27.[151,570,296,355]" box="[151,570,296,322]" pageId="27" pageNumber="428">
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<heading id="D0D75A49290A4F1CFF01FE9AFDBAFEBF" bold="true" box="[151,570,296,322]" fontSize="11" level="1" pageId="27" pageNumber="428" reason="1">
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<emphasis id="B9543137290A4F1CFF01FE9AFDBAFEBF" bold="true" box="[151,570,296,322]" pageId="27" pageNumber="428">
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<taxonomicName id="4C2096A6290A4F1CFF01FE9AFE55FEBF" ID-CoL="c2b62ba8-c637-47fe-89b4-2e9afd1c5be6" authority="Staples, 2019" authorityName="Staples" authorityYear="2019" box="[151,469,296,322]" class="Pycnogonida" family="Rhynchothoracidae" genus="Rhynchothorax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Pantopoda" pageId="27" pageNumber="428" phylum="Arthropoda" rank="species" species="coralensis" status="sp. nov.">
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<emphasis id="B9543137290A4F1CFF01FE9AFE55FEBF" bold="true" box="[151,469,296,322]" italics="true" pageId="27" pageNumber="428">Rhynchothorax coralensis</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="A2678C4C290A4F1CFE4AFE9AFDBAFEBF" box="[476,570,296,322]" pageId="27" pageNumber="428" rank="species">sp. nov.</taxonomicNameLabel>
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</emphasis>
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</heading>
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</paragraph>
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<paragraph id="8B9FED25290A4F1CFF01FEF8FE43FE9F" blockId="27.[151,570,296,355]" box="[151,451,330,355]" pageId="27" pageNumber="428">
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Figure 14A–F;
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<figureCitation id="131BF1A0290A4F1CFED2FEF8FE43FE9F" box="[324,451,330,355]" captionStart="PLATE 4" captionStartId="43.[151,234,1740,1762]" captionTargetBox="[151,1436,193,1718]" captionTargetId="figure@43.[151,1436,193,1718]" captionTargetPageId="43" captionText="PLATE 4. Austrodecus taylorae sp. nov., holotype, male. A, trunk, lateral view. Austrodecus sp. male. B, trunk, dorsal; C, trunk ventral; D, ocular tubercle. Rhynchothorax swir sp. nov., holotype, female. E, trunk, dorsal view; F, trunk, lateral view. Rhynchothorax coralensis sp. nov., holotype. G, trunk, lateral view; H, trunk, dorsal view." httpUri="https://zenodo.org/record/2598993/files/figure.png" pageId="27" pageNumber="428">Plate 4G, H</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="C33ABEAE290A4F1CFF01FE20FB9DFE0E" pageId="27" pageNumber="428" type="materials_examined">
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<paragraph id="8B9FED25290A4F1CFF01FE20FB9DFE0E" blockId="27.[151,1437,402,2017]" pageId="27" pageNumber="428">
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<emphasis id="B9543137290A4F1CFF01FE20FE01FE56" bold="true" box="[151,385,402,427]" pageId="27" pageNumber="428">Material examined.</emphasis>
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<materialsCitation id="3B48E778290A4F1CFE1FFE20FB9DFE0E" ID-GBIF-Occurrence="2013824384" collectingDate="2011-11-20" collectionCode="NHMUK" elevation="732" pageId="27" pageNumber="428" specimenCode="NHMUK 2018.34" specimenCount="1" typeStatus="holotype">
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<typeStatus id="549B5387290A4F1CFE1FFE20FE74FE56" box="[393,500,402,427]" pageId="27" pageNumber="428" type="holotype">Holotype</typeStatus>
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, sex undetermined (
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<specimenCode id="DB86455E290A4F1CFD40FE21FC29FE56" box="[726,937,403,427]" collectionCode="NHMUK" country="United Kingdom" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34665" lsid="urn:lsid:biocol.org:col:34665" name="Natural History Museum, London" pageId="27" pageNumber="428" type="Museum">NHMUK 2018.34</specimenCode>
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), Southwest Indian Ocean, Coral Seamount, 37˚ 56.79'S, 50˚ 27.24'E, ROV,
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<quantity id="4CD840C0290A4F1CFD93FE05FDD0FE33" box="[517,592,439,463]" metricMagnitude="2" metricUnit="m" metricValue="7.32" pageId="27" pageNumber="428" unit="m" value="732.0">
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<elevation id="000D0A16290A4F1CFD93FE05FDD0FE33" box="[517,592,439,463]" metricMagnitude="2" metricUnit="m" metricValue="7.32" pageId="27" pageNumber="428" unit="m" value="732.0">732 m</elevation>
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</quantity>
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, specimen JC066-1296D, stn 4.38, mooring site,
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<collectingMethod id="52619532290A4F1CFB1FFE05FAF3FE33" box="[1161,1395,438,463]" pageId="27" pageNumber="428">on Mango wood net</collectingMethod>
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,
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<date id="FF9ECBE5290A4F1CFA16FE05FECFFE0E" pageId="27" pageNumber="428" value="2011-11-20">
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<collectingDate id="EFDA320D290A4F1CFA16FE05FECFFE0E" pageId="27" pageNumber="428" value="2011-11-20">20 November 2011</collectingDate>
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</date>
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. Right palp and right oviger mounted in Euparal on glass slides.
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</materialsCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="C33ABEAE290A4F1CFF51FE4CFD27F93D" pageId="27" pageNumber="428" type="description">
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<paragraph id="8B9FED25290A4F1CFF51FE4CFEB3FD12" blockId="27.[151,1437,402,2017]" pageId="27" pageNumber="428">
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<emphasis id="B9543137290A4F1CFF51FE4CFED1FDEA" bold="true" box="[199,337,510,535]" pageId="27" pageNumber="428">Description</emphasis>
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.
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<typeStatus id="549B5387290A4F1CFEC9FE4CFE4BFDEA" box="[351,459,510,535]" pageId="27" pageNumber="428" type="holotype">Holotype</typeStatus>
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. Trunk robust (Fig.14A, B.
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<figureCitation id="131BF1A0290A4F1CFC97FE4CFC04FDEA" box="[769,900,510,535]" captionStart="PLATE 4" captionStartId="43.[151,234,1740,1762]" captionTargetBox="[151,1436,193,1718]" captionTargetId="figure@43.[151,1436,193,1718]" captionTargetPageId="43" captionText="PLATE 4. Austrodecus taylorae sp. nov., holotype, male. A, trunk, lateral view. Austrodecus sp. male. B, trunk, dorsal; C, trunk ventral; D, ocular tubercle. Rhynchothorax swir sp. nov., holotype, female. E, trunk, dorsal view; F, trunk, lateral view. Rhynchothorax coralensis sp. nov., holotype. G, trunk, lateral view; H, trunk, dorsal view." httpUri="https://zenodo.org/record/2598993/files/figure.png" pageId="27" pageNumber="428">Plate 4G, H</figureCitation>
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), surface finely papillose except proboscis, first two segmentation lines complete, third lacking, segments 1 to 3 with rounded mid-dorsal processes, those on segments 1and 2 placed on low transverse ridge; lateral cephalic extensions compact, bases partially in contact with first lateral processes, strong transverse constriction free of papillae at about mid-length, suture line absent; lateral processes touching at bases, length shorter than width, thickened transverse distal rim slightly raised in mid region. Ocular tubercle conical, two granulose tubercles at base of posterior surface; four eyes, pigmented, lateral sense organs raised.
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</paragraph>
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<paragraph id="8B9FED25290A4F1CFF51FD48FABAFCCA" blockId="27.[151,1437,402,2017]" pageId="27" pageNumber="428">Proboscis surface irregular, two proximal dorsolateral bulges and two smaller dorsodistal bulges, distal part narrowing strongly down-curved, mouth bilateral, mouth opening consisting of inner and outer antimeres.</paragraph>
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<paragraph id="8B9FED25290A4F1CFF51FCF0FD57FC82" blockId="27.[151,1437,402,2017]" pageId="27" pageNumber="428">Abdomen unarticulated at base, with slight mid-swelling, truncate distally, anal slit not cleft, placed vertically on distal surface, not seen in dorsal or ventral view.</paragraph>
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<paragraph id="8B9FED25290A4F1CFF51FC38FE12FC5E" blockId="27.[151,1437,402,2017]" box="[199,402,906,931]" pageId="27" pageNumber="428">Chelifores absent.</paragraph>
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<paragraph id="8B9FED25290A4F1CFF51FC1CFB3DFBCE" blockId="27.[151,1437,402,2017]" pageId="27" pageNumber="428">Palp five-segmented (Fig. 14D), papillose, first segment obscure in dorsal view, with few papillae, segment 2 longest, length about 3.5 times width, prominent inward-leaning dorsodistal digitiform process, height equal to width of segment, segment 3 little more than half length segment 2, with raised dorsodistal rugose thickening, segment 4 about one-quarter length segment 3, length segment 5 tiny, less than half segment 4.</paragraph>
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<paragraph id="8B9FED25290A4F1CFF51FB8CFB5BFB1A" blockId="27.[151,1437,402,2017]" pageId="27" pageNumber="428">
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Oviger ten-segmented (Fig. 14F), segment 4 longest, segment 5 slightly curved, widening distally, segment 6 longer than segment 5, segments 8–10 subequal, segment 10 with strong lamina on anterior surface, claw with broad cutting edge, length greater than half segment 10. Spine formula segments
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<quantity id="4CD840C0290A4F1CFBBDFB35FB0FFB62" box="[1067,1167,1158,1183]" metricMagnitude="-1" metricUnit="m" metricValue="2.159" metricValueMax="2.54" metricValueMin="1.778" pageId="27" pageNumber="428" unit="in" value="8.5" valueMax="10.0" valueMin="7.0">7 to10 in</quantity>
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the order of 3:2:3:2 but inconclusive due to small size and orientation of oviger mounted on glass slide, spine shape variable, some simple, others irregular or tridentate but mostly seen in lateral view and actual shape difficult to interpret.
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</paragraph>
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<paragraph id="8B9FED25290A4F1CFF51FB41FDF5FA42" blockId="27.[151,1437,402,2017]" pageId="27" pageNumber="428">Legs; coxae of similar length (Fig. 14E), first coxae legs 1 to 3 with distal tubercle, absent on fourth legs, femur longer than coxae 1 to 3 combined, femur third leg 3.3 times longer than greatest width, femur fourth leg narrower, 4.6 times longer than greatest width, tibia 1 slightly shorter than femur, tibia 2 shorter than tibia 1, tarsus about one-sixth length of propodus, propodus gently curved, heel absent, sole spines short varying between legs from 7 to13, claw slightly less than one-third length of propodus, auxiliary claws one-third length of main claw. Cement glands and gonopores not evident.</paragraph>
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<paragraph id="8B9FED25290A4F1CFF51FA7CFD27F93D" blockId="27.[151,1437,402,2017]" pageId="27" pageNumber="428">
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Measurements of
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<typeStatus id="549B5387290A4F1CFE18FA7FFE70FA1B" box="[398,496,1485,1510]" pageId="27" pageNumber="428" type="holotype">holotype</typeStatus>
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(mm). Trunk length (frontal margin of cephalic segment to tip of 4
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<superScript id="7C55406D290A4F1CFB4FFA78FB65FA25" attach="left" box="[1241,1253,1482,1496]" fontSize="6" pageId="27" pageNumber="428">th</superScript>
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lateral process), 0.960; length of cephalon, 0.376; length cephalic lateral extension, 0.200; width across 2
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<superScript id="7C55406D290A4F1CFBEEFA42FB08FA03" attach="left" box="[1144,1160,1520,1534]" fontSize="6" pageId="27" pageNumber="428">nd</superScript>
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lateral processes, 0.664; proboscis length (ventral), 0.600; greatest diameter proboscis, 0.264; length abdomen (dorsal), 0.296. Palp: seg. 1, 0.024; seg. 2, 0.344: seg. 3, 0.184; seg. 4, 0.064; seg. 5, 0.024. Oviger: seg. 1, 0.064; seg. 2, 0.088: seg. 3, 0.080; seg. 4, 0.160; seg. 5, 0.104; seg. 6, 0.152; seg. 7, 0.096; seg. 8, 0.080; seg. 9, 0.080; seg. 10, 0.080; claw, 0.040. Third leg: coxa 1, 0.104; coxa 2, 0.104; coxa 3, 0.104; femur, 0.392; tibia 1, 0.360; tibia 2, 0.304; tarsus, 0.064; propodus, 0.320; claw, 0.096; aux claws 0.048.
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</paragraph>
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</subSubSection>
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<subSubSection id="C33ABEAE290A4F1CFF51F97EFCF2F918" box="[199,882,1740,1765]" pageId="27" pageNumber="428" type="etymology">
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<paragraph id="8B9FED25290A4F1CFF51F97EFCF2F918" blockId="27.[151,1437,402,2017]" box="[199,882,1740,1765]" pageId="27" pageNumber="428">
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<emphasis id="B9543137290A4F1CFF51F97EFECEF918" bold="true" box="[199,334,1740,1765]" pageId="27" pageNumber="428">Etymology.</emphasis>
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Named for its
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<typeStatus id="549B5387290A4F1CFE63F97FFDA5F918" box="[501,549,1741,1765]" pageId="27" pageNumber="428">type</typeStatus>
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locality, the Coral Seamount.
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</paragraph>
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</subSubSection>
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<subSubSection id="C33ABEAE290A4F1AFF51F942FB4EFF28" lastPageId="29" lastPageNumber="430" pageId="27" pageNumber="428" type="discussion">
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<paragraph id="8B9FED25290A4F1CFF51F942FE81F841" blockId="27.[151,1437,402,2017]" pageId="27" pageNumber="428">
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<emphasis id="B9543137290A4F1CFF51F942FEBBF8F4" bold="true" box="[199,315,1776,1801]" pageId="27" pageNumber="428">Remarks.</emphasis>
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Although occurring sympatrically with
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<taxonomicName id="4C2096A6290A4F1CFC94F943FCD2F8F5" authority="Staples, 2019" authorityName="Staples" authorityYear="2019" box="[770,850,1777,1800]" class="Pycnogonida" family="Rhynchothoracidae" genus="Rhynchothorax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Pantopoda" pageId="27" pageNumber="428" phylum="Arthropoda" rank="species" species="swir" status="sp. nov.">
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<emphasis id="B9543137290A4F1CFC94F943FCD2F8F5" box="[770,850,1777,1800]" italics="true" pageId="27" pageNumber="428">R. swir</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="A2678C4C290A4F1CFCCCF942FC35F8F4" box="[858,949,1776,1801]" pageId="27" pageNumber="428" rank="species">
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<emphasis id="B9543137290A4F1CFCCCF942FC35F8F4" bold="true" box="[858,949,1776,1801]" pageId="27" pageNumber="428">sp. nov.</emphasis>
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</taxonomicNameLabel>
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the trunk of this species is far more robust and compact. It differs conspicuously by the absence of prominent digitiform processes on the lateral processes, in the wider and more sculptured proboscis, more compact cephalic lateral processes, rounded mid-dorsal trunk processes and in having a low, conical ocular tubercle. The only other species of
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<taxonomicName id="4C2096A6290A4F1CFBFFF8EEFA94F888" authorityName="Costa" authorityYear="1861" box="[1129,1300,1884,1909]" class="Pycnogonida" family="Rhynchothoracidae" genus="Rhynchothorax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Pantopoda" pageId="27" pageNumber="428" phylum="Arthropoda" rank="genus">
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<emphasis id="B9543137290A4F1CFBFFF8EEFA94F888" box="[1129,1300,1884,1909]" italics="true" pageId="27" pageNumber="428">Rhynchothorax</emphasis>
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</taxonomicName>
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that shares rounded mid-dorsal processes on the trunk is
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<taxonomicName id="4C2096A6290A4F1CFD27F833FC70F865" authority="Muller, 1989" authorityName="Muller" authorityYear="1989" box="[689,1008,1920,1945]" class="Pycnogonida" family="Rhynchothoracidae" genus="Rhynchothorax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Pantopoda" pageId="27" pageNumber="428" phylum="Arthropoda" rank="species" species="tiahurensis">
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<emphasis id="B9543137290A4F1CFD27F833FCD0F864" box="[689,848,1920,1945]" italics="true" pageId="27" pageNumber="428">R. tiahurensis</emphasis>
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<bibRefCitation id="EFB190D4290A4F1CFCCDF832FC70F865" author="Muller, H. G." box="[859,1008,1920,1945]" pageId="27" pageNumber="428" pagination="123 - 139" refId="ref28461" refString="Muller, H. G. (1989) Shallow-water Pycnogonida from coral reefs at Moorea, Society Islands, with description of Rhynchothorax tiahurensis n. sp. Bonner Zoologische Beitrage, 40 (2), 123 - 139." type="journal article" year="1989">Müller, 1989</bibRefCitation>
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</taxonomicName>
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but these species share little else in common.
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</paragraph>
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<paragraph id="8B9FED25290A4F1CFF51F87AFA1CF81D" blockId="27.[151,1437,402,2017]" box="[199,1436,1992,2017]" pageId="27" pageNumber="428">
|
||
Using Clark’s 1976 key, this specimen can be followed to couplet 7 where it keys out to
|
||
<taxonomicName id="4C2096A6290A4F1CFB42F87BFAD8F81C" authorityName="Hodgson" authorityYear="1907" box="[1236,1368,1992,2017]" class="Pycnogonida" family="Rhynchothoracidae" genus="Rhynchothorax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Pantopoda" pageId="27" pageNumber="428" phylum="Arthropoda" rank="species" species="australis">
|
||
<emphasis id="B9543137290A4F1CFB42F87BFAD8F81C" box="[1236,1368,1992,2017]" italics="true" pageId="27" pageNumber="428">R. australis</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<typeStatus id="549B5387290A4F1CFAFCF87AFA1CF81D" box="[1386,1436,1992,2016]" pageId="27" pageNumber="428">type</typeStatus>
|
||
</paragraph>
|
||
<paragraph id="8B9FED25290C4F1AFF51FF2AFA1DFF4D" blockId="29.[151,1437,151,213]" box="[199,1437,151,176]" pageId="29" pageNumber="430">
|
||
As with
|
||
<taxonomicName id="4C2096A6290C4F1AFEB0FF2BFEF6FF4D" authorityName="Staples" authorityYear="2019" box="[294,374,153,176]" class="Pycnogonida" family="Rhynchothoracidae" genus="Rhynchothorax" higherTaxonomySource="GBIF" kingdom="Animalia" order="Pantopoda" pageId="29" pageNumber="430" phylum="Arthropoda" rank="species" species="swir">
|
||
<emphasis id="B9543137290C4F1AFEB0FF2BFEF6FF4D" box="[294,374,153,176]" italics="true" pageId="29" pageNumber="430">R. swir</emphasis>
|
||
</taxonomicName>
|
||
the proboscis originates from within a wide collar on the anterior margin of the cephalon (Fig.
|
||
</paragraph>
|
||
<paragraph id="8B9FED25290C4F1AFF01FF0EFB4EFF28" blockId="29.[151,1437,151,213]" box="[151,1230,188,213]" pageId="29" pageNumber="430">14C) but it appears to be withdrawn in this specimen and the arthrodial membrane is not visible.</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |