treatments-xml/data/3F/55/98/3F55985FFFB0FF88DE47AFA826A0FD1E.xml
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<document id="33965E4EB0F0879C2FE3419B40DE3F92" ID-DOI="10.1080/00222933.2012.675598" ID-ISSN="1464-5262" ID-Zenodo-Dep="5200209" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1628906062651" checkinUser="felipe" docAuthor="Narahara, Yukiko, Tomikawa, Ko &amp; Torigoe, Kenji" docDate="2012" docId="3F55985FFFB0FF88DE47AFA826A0FD1E" docLanguage="en" docName="JNatHist.46.23-24.1477-1507.pdf" docOrigin="Journal of Natural History (J. Nat. Hist.) 46 (23 - 24)" docSource="http://dx.doi.org/10.1080/00222933.2012.675598" docStyle="DocumentStyle:FCA295E821436EF9307F50C7AC261B53.5:JNatHist.2008-2012.journal_article.1cover" docStyleId="FCA295E821436EF9307F50C7AC261B53" docStyleName="JNatHist.2008-2012.journal_article.1cover" docStyleVersion="5" docTitle="Stephonyx perexcavatus Narahara &amp; Tomikawa &amp; Torigoe 2012, sp. nov." docType="treatment" docVersion="3" lastPageNumber="1486" masterDocId="C36CE027FFB3FF82DC43AE54253FFFFD" masterDocTitle="Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species" masterLastPageNumber="1507" masterPageNumber="1477" pageNumber="1479" updateTime="1699056193614" updateUser="plazi" zenodo-license-document="CLOSED">
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<mods:title id="174B89F590C032311FA201786A4CDF94">Four species of the genus Stephonyx (Crustacea: Amphipoda: Uristidae) from Japan, with description of a new species</mods:title>
</mods:titleInfo>
<mods:name id="C9FCE0B394286B775AB45D6B19B9C13A" type="personal">
<mods:role id="02B95E2764E74C34701B112908CF91E6">
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<mods:namePart id="B9D120E982DB089B388BBACD92CDBCBA">Narahara, Yukiko</mods:namePart>
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<mods:namePart id="9C43C215987EA658AEB6FA13FD15899A">Tomikawa, Ko</mods:namePart>
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<mods:namePart id="E794B8A2C40A1D28DCC4F5D0C4FFC0C7">Torigoe, Kenji</mods:namePart>
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<mods:title id="CEDD51740D581B6140D07A38BF859E48">Journal of Natural History</mods:title>
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<mods:part id="BF1A29E9B34417FD3F30DE8156E2D397">
<mods:date id="D99344C34244D5E4A4C24B25A78088F4">2012</mods:date>
<mods:detail id="FE3A30B663735EE4D51AC962F8CF4658" type="series">
<mods:title id="DEA519B0FB1BA34036594DD4DFBFBA08">J. Nat. Hist.</mods:title>
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<mods:number id="B2A17703949F2057EA3E33321BDC003D">2012-06-30</mods:number>
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<mods:number id="B92B863AB132D340ED248F1EA0D8C348">46</mods:number>
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<mods:number id="9FD6997D4EAA037B11D569FEEDB02481">23 - 24</mods:number>
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<mods:start id="BFB0843D44063F641D328B27F509DD13">1477</mods:start>
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<mods:classification id="28C472A7C0E55B8FF79E8D3639961BAA">journal article</mods:classification>
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<mods:identifier id="6D451A3050C399A47E4D45DED8642BEE" type="ISSN">1464-5262</mods:identifier>
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<treatment id="3F55985FFFB0FF88DE47AFA826A0FD1E" LSID="urn:lsid:plazi:treatment:3F55985FFFB0FF88DE47AFA826A0FD1E" httpUri="http://treatment.plazi.org/id/3F55985FFFB0FF88DE47AFA826A0FD1E" lastPageId="10" lastPageNumber="1486" pageId="3" pageNumber="1479">
<subSubSection id="FFE67AC2FFB0FF81DE47AFA82683FDCE" pageId="3" pageNumber="1479" type="nomenclature">
<paragraph id="B7432949FFB0FF81DE47AFA8265DFDEE" blockId="3.[426,956,507,595]" box="[516,866,507,532]" pageId="3" pageNumber="1479">
<heading id="EC0B9E25FFB0FF81DE47AFA8265DFDEE" box="[516,866,507,532]" centered="true" fontSize="10" level="2" pageId="3" pageNumber="1479" reason="3">
<emphasis id="8588F55BFFB0FF81DE47AFA8265DFDEE" bold="true" box="[516,866,507,532]" pageId="3" pageNumber="1479">
<taxonomicName id="70FC52CAFFB0FF81DE47AFA82632FDE9" ID-CoL="52CZM" authority="Narahara &amp; Tomikawa &amp; Torigoe, 2012" authorityName="Narahara &amp; Tomikawa &amp; Torigoe" authorityYear="2012" box="[516,781,508,532]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="3" pageNumber="1479" phylum="Arthropoda" rank="species" species="perexcavatus" status="sp. nov.">
<emphasis id="8588F55BFFB0FF81DE47AFA82632FDE9" bold="true" box="[516,781,508,532]" italics="true" pageId="3" pageNumber="1479">Stephonyx perexcavatus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="9EBB4820FFB0FF81DF50AFAF265DFDEE" box="[787,866,507,531]" pageId="3" pageNumber="1479" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph id="B7432949FFB0FF81DDE9AC4F2683FDCE" blockId="3.[426,956,507,595]" box="[426,956,539,564]" pageId="3" pageNumber="1479">
(Japanese name:
<emphasis id="8588F55BFFB0FF81DE2BAC482646FDC9" box="[616,889,540,564]" italics="true" pageId="3" pageNumber="1479">Hekomi-tsumamisokoebi</emphasis>
, new)
</paragraph>
</subSubSection>
<subSubSection id="FFE67AC2FFB0FF88DE2AAC6F26A0FD1E" lastPageId="10" lastPageNumber="1486" pageId="3" pageNumber="1479" type="description">
<paragraph id="B7432949FFB0FF81DE2AAC6F27C1FDAE" blockId="3.[426,956,507,595]" box="[617,766,571,595]" pageId="3" pageNumber="1479">
(
<figureCitation id="2FC735CCFFB0FF81DE33AC6F27C9FDAE" box="[624,758,571,595]" captionStart-0="Figure 2" captionStart-1="Figure 3" captionStart-2="Figure 4" captionStart-3="Figure 5" captionStart-4="Figure 6" captionStartId-0="4.[143,210,1584,1606]" captionStartId-1="6.[143,210,1501,1523]" captionStartId-2="7.[211,278,1326,1348]" captionStartId-3="8.[143,210,1498,1520]" captionStartId-4="9.[211,278,836,858]" captionTargetBox-0="[143,1102,161,1551]" captionTargetBox-1="[162,1084,161,1468]" captionTargetBox-2="[213,1169,169,1294]" captionTargetBox-3="[143,1102,162,1466]" captionTargetBox-4="[212,1170,168,803]" captionTargetId-0="figure-5@4.[143,1102,161,1551]" captionTargetId-1="figure-5@6.[162,1084,161,1468]" captionTargetId-2="figure-5@7.[211,1170,169,1294]" captionTargetId-3="figure-5@8.[143,1102,162,1466]" captionTargetId-4="figure-5@9.[211,1170,167,803]" captionTargetPageId-0="4" captionTargetPageId-1="6" captionTargetPageId-2="7" captionTargetPageId-3="8" captionTargetPageId-4="9" captionText-0="Figure 2. Stephonyx perexcavatus sp. nov., (A, CM) holotype, male (22.9 mm), NSMT-Cr 22011; (B) paratype, male (23.2 mm), NSMT-Cr 22020, Okinawa Trough. (A, B) Heads, lateral views; (C) right antenna 1, medial view; (D) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (E) right antenna 2, medial view;" captionText-1="Figure 3. Stephonyx perexcavatus sp. nov., holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (A) Maxilliped (inner plate twisted outward), dorsal view; (B) inner plate of maxilliped, dorsal view; (C) right gnathopod 1, ventral view; (D) propodus and dactylus of right gnathopod 1, medial view; (E) distal parts of propodus and dactylus of right gnathopod 1, medial view; (F) right gnathopod 2, medial view; (G) propodus and dactylus of right gnathopod 2, medial view; (H) palmar margin of propodus and dactylus of right gnathopod 2, medial view; (I) right pereopod 3, medial view; (J) dactylus of right pereopod 3, medial view; (K) right pereopod 4, medial view." captionText-2="Figure 4. Stephonyx perexcavatus sp. nov., holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (AC) Right pereopods 57, medial views; (DF) left coxal gills 24, lateral views." captionText-3="Figure 5. Stephonyx perexcavatus sp. nov., (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views." captionText-4="Figure 6. Stephonyx perexcavatus sp. nov., (AC, E) paratype, female (21.9 mm), NSMT- Cr 22018; (D) paratype, female (22.6 mm), NNSMT-Cr 22016, Okinawa Trough. (A) Right antenna 1, medial view; (B) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (C) right antenna 2, medial view; (D) oostegite of right gnathopod 2, medial view; (E) right uropod 3, dorsal view." figureDoi-0="http://doi.org/10.5281/zenodo.5200213" figureDoi-1="http://doi.org/10.5281/zenodo.5200215" figureDoi-2="http://doi.org/10.5281/zenodo.5200217" figureDoi-3="http://doi.org/10.5281/zenodo.5200219" figureDoi-4="http://doi.org/10.5281/zenodo.5200221" httpUri-0="https://zenodo.org/record/5200213/files/figure.png" httpUri-1="https://zenodo.org/record/5200215/files/figure.png" httpUri-2="https://zenodo.org/record/5200217/files/figure.png" httpUri-3="https://zenodo.org/record/5200219/files/figure.png" httpUri-4="https://zenodo.org/record/5200221/files/figure.png" pageId="3" pageNumber="1479">Figures 26</figureCitation>
)
</paragraph>
<paragraph id="B7432949FFB0FF81DC90ACD7249AFD66" blockId="3.[211,421,643,667]" box="[211,421,643,667]" pageId="3" pageNumber="1479">
<emphasis id="8588F55BFFB0FF81DC90ACD7249AFD66" box="[211,421,643,667]" italics="true" pageId="3" pageNumber="1479">Material examined</emphasis>
</paragraph>
<paragraph id="B7432949FFB0FF81DC90ACFF21ABFCFF" blockId="3.[211,1172,683,771]" pageId="3" pageNumber="1479">
<materialsCitation id="07942314FFB0FF81DC90ACFF21ABFCFF" collectingDate="2010-07-29" collectingDateMax="2010-07-30" collectingDateMin="2010-07-29" collectionCode="R, V" collectorName="Soyo-maru &amp; St-trap &amp; Okinawa Trough &amp; K. Kakui." country="China" county="Sea" elevation="1077" latitude="28.491667" location="Okinawa Trough" longLatPrecision="123" longitude="127.986664" municipality="East" pageId="3" pageNumber="1479" specimenCount="1" specimenCount-male="1" typeStatus="holotype">
<emphasis id="8588F55BFFB0FF81DC90ACFF247EFD3E" box="[211,321,683,707]" italics="true" pageId="3" pageNumber="1479">
<typeStatus id="684797EBFFB0FF81DC90ACFF2403FD3E" box="[211,316,683,707]" pageId="3" pageNumber="1479" type="holotype">Holotype</typeStatus>
.
</emphasis>
NSMT-Cr 22011,
<specimenCount id="A1FAE2C0FFB0FF81DE5DACFF2754FD3E" box="[542,619,683,707]" pageId="3" pageNumber="1479" type="male">1 male</specimenCount>
(
<quantity id="700484ACFFB0FF81DE3FACFF27D8FD3E" box="[636,743,683,707]" metricMagnitude="-2" metricUnit="m" metricValue="2.29" pageId="3" pageNumber="1479" unit="mm" value="22.9">22.9 mm</quantity>
),
<location id="B2237F92FFB0FF81DEBEACFF2681FD3E" LSID="urn:lsid:plazi:treatment:3F55985FFFB0FF88DE47AFA826A0FD1E:B2237F92FFB0FF81DEBEACFF2681FD3E" box="[765,958,683,707]" country="China" county="Sea" latitude="28.491667" longLatPrecision="123" longitude="127.986664" municipality="East" name="Okinawa Trough" pageId="3" pageNumber="1479">Okinawa Trough</location>
(
<collectingMunicipality id="5727B333FFB0FF81DF8CACFF213DFD3E" box="[975,1026,683,707]" pageId="3" pageNumber="1479">East</collectingMunicipality>
<collectingCountry id="CFEB69D9FFB0FF81D84EACFF216DFD3E" box="[1037,1106,683,707]" name="China" pageId="3" pageNumber="1479">China</collectingCountry>
<collectingCounty id="5E2251C5FFB0FF81D81FACFF21B8FD3E" box="[1116,1159,683,707]" pageId="3" pageNumber="1479">Sea</collectingCounty>
),
<geoCoordinate id="D2C84F8EFFB0FF81DC90AC9F2472FD1F" box="[211,333,711,739]" degrees="28" direction="north" minutes="29.5" orientation="latitude" pageId="3" pageNumber="1479" precision="92" value="28.491667">
28
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29.5
<superScript id="40898401FFB0FF81DD64AC932413FD25" attach="left" box="[295,300,711,728]" fontSize="7" pageId="3" pageNumber="1479"></superScript>
N
</geoCoordinate>
,
<geoCoordinate id="D2C84F8EFFB0FF81DD19AC9F24E1FD1F" box="[346,478,711,739]" degrees="127" direction="east" minutes="59.2" orientation="longitude" pageId="3" pageNumber="1479" precision="92" value="127.986664">
127
<superScript id="40898401FFB0FF81DDC1AC9324B4FD25" attach="none" box="[386,395,711,728]" fontSize="7" pageId="3" pageNumber="1479"></superScript>
59.2
<superScript id="40898401FFB0FF81DDF8AC9324FFFD25" attach="left" box="[443,448,711,728]" fontSize="7" pageId="3" pageNumber="1479"></superScript>
E
</geoCoordinate>
,
<collectingMethod id="6EBD515EFFB0FF81DDA8AC9F2756FD1F" box="[491,617,715,739]" pageId="3" pageNumber="1479">baited trap</collectingMethod>
,
<quantity id="700484ACFFB0FF81DE35AC9F2630FD1F" box="[630,783,715,739]" metricMagnitude="3" metricUnit="m" metricValue="1.0765" metricValueMax="1.08" metricValueMin="1.073" pageId="3" pageNumber="1479" unit="m" value="1076.5" valueMax="1080.0" valueMin="1073.0">
<elevation id="3CD1CE7AFFB0FF81DE35AC9F2630FD1F" box="[630,783,715,739]" metricMagnitude="3" metricUnit="m" metricValue="1.0765" metricValueMax="1.08" metricValueMin="1.073" pageId="3" pageNumber="1479" unit="m" value="1076.5" valueMax="1080.0" valueMin="1073.0">10731080 m</elevation>
</quantity>
, bottom at 10:08 on
<date id="C3420F89FFB0FF81DFBCAC9F21B0FD1E" box="[1023,1167,715,739]" pageId="3" pageNumber="1479" value="2010-07-29">
<collectingDate id="D306F661FFB0FF81DFBCAC9F21B0FD1E" box="[1023,1167,715,739]" pageId="3" pageNumber="1479" value="2010-07-29">29 July 2010</collectingDate>
</date>
,
<collectionCode id="D1EDB18CFFB0FF81DC90ACBF25D8FCFF" box="[211,231,747,770]" country="Chile" name="Departamento de Geologia, Universidad de Chile" pageId="3" pageNumber="1479">R</collectionCode>
/
<collectionCode id="D1EDB18CFFB0FF81DCB7ACBF2438FCFF" box="[244,263,747,770]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="3" pageNumber="1479" type="Museum">V</collectionCode>
<emphasis id="8588F55BFFB0FF81DD4EACBF24B9FCFE" box="[269,390,747,771]" italics="true" pageId="3" pageNumber="1479">
<collectorName id="1A094C9FFFB0FF81DD4EACBF24B9FCFE" box="[269,390,747,771]" pageId="3" pageNumber="1479">Soyo-maru</collectorName>
</emphasis>
, Soyo-2010,
<collectorName id="1A094C9FFFB0FF81DE56ACBE275BFCFF" box="[533,612,746,770]" pageId="3" pageNumber="1479">St-trap</collectorName>
7 (
<collectorName id="1A094C9FFFB0FF81DEC7ACBE267AFCFF" box="[644,837,746,770]" pageId="3" pageNumber="1479">Okinawa Trough</collectorName>
),
<date id="C3420F89FFB0FF81DF14ACBE26DDFCFF" box="[855,994,746,770]" pageId="3" pageNumber="1479" value="2010-07-30">
<collectingDate id="D306F661FFB0FF81DF14ACBE26DDFCFF" box="[855,994,746,770]" pageId="3" pageNumber="1479" value="2010-07-30">30 July 2010</collectingDate>
</date>
, coll.
<collectorName id="1A094C9FFFB0FF81D861ACBF21ABFCFF" box="[1058,1172,746,770]" pageId="3" pageNumber="1479">K. Kakui.</collectorName>
</materialsCitation>
</paragraph>
<paragraph id="B7432949FFB0FF81DC90AD4F26FDFCAF" blockId="3.[211,1172,794,850]" pageId="3" pageNumber="1479">
<emphasis id="8588F55BFFB0FF81DC90AD4F247FFCCF" box="[211,320,795,818]" italics="true" pageId="3" pageNumber="1479">
<typeStatus id="684797EBFFB0FF81DC90AD4F247FFCCF" box="[211,320,795,818]" pageId="3" pageNumber="1479" type="paratype">Paratypes</typeStatus>
</emphasis>
. NSMT-Cr 2201222015,
<specimenCount id="A1FAE2C0FFB0FF81DE34AD4E27CDFCCF" box="[631,754,794,818]" pageId="3" pageNumber="1479" type="male">four males</specimenCount>
(
<quantity id="700484ACFFB0FF81DF47AD4E2693FCCF" box="[772,940,794,818]" metricMagnitude="-2" metricUnit="m" metricValue="2.165" metricValueMax="2.29" metricValueMin="2.04" pageId="3" pageNumber="1479" unit="mm" value="21.65" valueMax="22.9" valueMin="20.4">20.422.9 mm</quantity>
), NSMT-Cr 22016 22020,
<specimenCount id="A1FAE2C0FFB0FF81DD67AD6E2499FCAF" box="[292,422,826,850]" pageId="3" pageNumber="1479" type="female">five females</specimenCount>
(
<quantity id="700484ACFFB0FF81DDF7AD6E2768FCAF" box="[436,599,826,850]" metricMagnitude="-2" metricUnit="m" metricValue="2.255" metricValueMax="2.32" metricValueMin="2.19" pageId="3" pageNumber="1479" unit="mm" value="22.549999999999997" valueMax="23.2" valueMin="21.9">21.923.2 mm</quantity>
). Data same as for the
<typeStatus id="684797EBFFB0FF81DF1BAD6E2681FCAF" box="[856,958,826,850]" pageId="3" pageNumber="1479" type="holotype">holotype</typeStatus>
.
</paragraph>
<paragraph id="B7432949FFB0FF81DC90ADD727CAFC67" blockId="3.[211,757,898,922]" box="[211,757,898,922]" pageId="3" pageNumber="1479">
<emphasis id="8588F55BFFB0FF81DC90ADD727CAFC67" box="[211,757,898,922]" italics="true" pageId="3" pageNumber="1479">
Description of male (
<typeStatus id="684797EBFFB0FF81DDF9ADD62720FC67" box="[442,543,898,922]" pageId="3" pageNumber="1479" type="holotype">holotype</typeStatus>
, NSMT-Cr 22011)
</emphasis>
</paragraph>
<paragraph id="B7432949FFB0FF81DC90ADFE240EFBBC" blockId="3.[211,1172,938,1663]" pageId="3" pageNumber="1479">
Head (
<figureCitation id="2FC735CCFFB0FF81DD5CADFE248BFC3F" box="[287,436,938,962]" captionStart="Figure 2" captionStartId="4.[143,210,1584,1606]" captionTargetBox="[143,1102,161,1551]" captionTargetId="figure-5@4.[143,1102,161,1551]" captionTargetPageId="4" captionText="Figure 2. Stephonyx perexcavatus sp. nov., (A, CM) holotype, male (22.9 mm), NSMT-Cr 22011; (B) paratype, male (23.2 mm), NSMT-Cr 22020, Okinawa Trough. (A, B) Heads, lateral views; (C) right antenna 1, medial view; (D) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (E) right antenna 2, medial view;" figureDoi="http://doi.org/10.5281/zenodo.5200213" httpUri="https://zenodo.org/record/5200213/files/figure.png" pageId="3" pageNumber="1479">Figure 2A, B</figureCitation>
) deeper than long, lateral cephalic lobe rounded; rostrum absent; eyes L-shaped, faded in alcohol. Epimeral plates 13 (
<figureCitation id="2FC735CCFFB0FF81DF69AD9E2688FC1F" box="[810,951,970,994]" captionStart="Figure 5" captionStartId="8.[143,210,1498,1520]" captionTargetBox="[143,1102,162,1466]" captionTargetId="figure-5@8.[143,1102,162,1466]" captionTargetPageId="8" captionText="Figure 5. Stephonyx perexcavatus sp. nov., (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views." figureDoi="http://doi.org/10.5281/zenodo.5200219" httpUri="https://zenodo.org/record/5200219/files/figure.png" pageId="3" pageNumber="1479">Figure 5GI</figureCitation>
) with anteroventral corners rounded, with setae; posterior margin of plate 1 convex; posteroventral corner of plate 1 not pointed, corner of plate 2 with tooth, and corner of plate 3 weakly pointed.
</paragraph>
<paragraph id="B7432949FFB0FF81DCBDAA1D244FFADD" blockId="3.[211,1172,938,1663]" pageId="3" pageNumber="1479">
Antenna 1 (
<figureCitation id="2FC735CCFFB0FF81DDC4AA1D271DFB9C" box="[391,546,1097,1121]" captionStart="Figure 2" captionStartId="4.[143,210,1584,1606]" captionTargetBox="[143,1102,161,1551]" captionTargetId="figure-5@4.[143,1102,161,1551]" captionTargetPageId="4" captionText="Figure 2. Stephonyx perexcavatus sp. nov., (A, CM) holotype, male (22.9 mm), NSMT-Cr 22011; (B) paratype, male (23.2 mm), NSMT-Cr 22020, Okinawa Trough. (A, B) Heads, lateral views; (C) right antenna 1, medial view; (D) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (E) right antenna 2, medial view;" figureDoi="http://doi.org/10.5281/zenodo.5200213" httpUri="https://zenodo.org/record/5200213/files/figure.png" pageId="3" pageNumber="1479">Figure 2C, D</figureCitation>
) 0.2 times body length, peduncular articles 13 length ratio of 1.0: 0.5: 0.5; accessory flagellum nine-articulate; primary flagellum 28-articulate, calceoli present on articles 6, 7, 9, 12, 1419 and 2224; callynophore welldeveloped, 43 rows, two fields. Antenna 2 (
<figureCitation id="2FC735CCFFB0FF81DE82AAFD2609FB3C" box="[705,822,1193,1217]" captionStart="Figure 2" captionStartId="4.[143,210,1584,1606]" captionTargetBox="[143,1102,161,1551]" captionTargetId="figure-5@4.[143,1102,161,1551]" captionTargetPageId="4" captionText="Figure 2. Stephonyx perexcavatus sp. nov., (A, CM) holotype, male (22.9 mm), NSMT-Cr 22011; (B) paratype, male (23.2 mm), NSMT-Cr 22020, Okinawa Trough. (A, B) Heads, lateral views; (C) right antenna 1, medial view; (D) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (E) right antenna 2, medial view;" figureDoi="http://doi.org/10.5281/zenodo.5200213" httpUri="https://zenodo.org/record/5200213/files/figure.png" pageId="3" pageNumber="1479">Figure 2E</figureCitation>
) 1.9 times antenna 1; anterior margins of articles 4 and 5 with brush setae, peduncular articles 4 and 5 not swollen; flagellum 62-articulate; calceoli present on articles 3, 4, 79, 11, 2125, 28, 31, 37, 39, 41, 43 and 49.
</paragraph>
<paragraph id="B7432949FFB0FF87DCBDAB7C26BBFF02" blockId="3.[211,1172,938,1663]" lastBlockId="5.[211,1172,167,1498]" lastPageId="5" lastPageNumber="1481" pageId="3" pageNumber="1479">
Mouthpart bundle, subquadrate. Epistome and upper lip (
<figureCitation id="2FC735CCFFB0FF81DFE2AB7C2129FABD" box="[929,1046,1320,1344]" captionStart="Figure 2" captionStartId="4.[143,210,1584,1606]" captionTargetBox="[143,1102,161,1551]" captionTargetId="figure-5@4.[143,1102,161,1551]" captionTargetPageId="4" captionText="Figure 2. Stephonyx perexcavatus sp. nov., (A, CM) holotype, male (22.9 mm), NSMT-Cr 22011; (B) paratype, male (23.2 mm), NSMT-Cr 22020, Okinawa Trough. (A, B) Heads, lateral views; (C) right antenna 1, medial view; (D) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (E) right antenna 2, medial view;" figureDoi="http://doi.org/10.5281/zenodo.5200213" httpUri="https://zenodo.org/record/5200213/files/figure.png" pageId="3" pageNumber="1479">Figure 2F</figureCitation>
) separated by notch, subequal. Mandible (
<figureCitation id="2FC735CCFFB0FF81DE77AB1C27FCFA9D" box="[564,707,1352,1376]" captionStart="Figure 2" captionStartId="4.[143,210,1584,1606]" captionTargetBox="[143,1102,161,1551]" captionTargetId="figure-5@4.[143,1102,161,1551]" captionTargetPageId="4" captionText="Figure 2. Stephonyx perexcavatus sp. nov., (A, CM) holotype, male (22.9 mm), NSMT-Cr 22011; (B) paratype, male (23.2 mm), NSMT-Cr 22020, Okinawa Trough. (A, B) Heads, lateral views; (C) right antenna 1, medial view; (D) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (E) right antenna 2, medial view;" figureDoi="http://doi.org/10.5281/zenodo.5200213" httpUri="https://zenodo.org/record/5200213/files/figure.png" pageId="3" pageNumber="1479">Figure 2H, I</figureCitation>
) incisor smooth, with left lacinia mobilis four-denticulate, right lacinia mobilis absent; accessory setal row present; molar setose, not triturative; palp attached midway, length of article 1 2.4 times width, article 2 with setae along distal half of lateral margin, article 3 with setae along most of posterior margin, articles
<quantity id="700484ACFFB0FF81DDCAAB9C24F1FA1D" box="[393,462,1480,1504]" metricMagnitude="-2" metricUnit="m" metricValue="5.08" metricValueMax="7.62" metricValueMin="2.54" pageId="3" pageNumber="1479" unit="in" value="2.0" valueMax="3.0" valueMin="1.0">13 in</quantity>
length ratio of 1.0: 2.6: 1.8. Lower lip (
<figureCitation id="2FC735CCFFB0FF81DFD9AB9C212EFA1D" box="[922,1041,1480,1504]" captionStart="Figure 2" captionStartId="4.[143,210,1584,1606]" captionTargetBox="[143,1102,161,1551]" captionTargetId="figure-5@4.[143,1102,161,1551]" captionTargetPageId="4" captionText="Figure 2. Stephonyx perexcavatus sp. nov., (A, CM) holotype, male (22.9 mm), NSMT-Cr 22011; (B) paratype, male (23.2 mm), NSMT-Cr 22020, Okinawa Trough. (A, B) Heads, lateral views; (C) right antenna 1, medial view; (D) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (E) right antenna 2, medial view;" figureDoi="http://doi.org/10.5281/zenodo.5200213" httpUri="https://zenodo.org/record/5200213/files/figure.png" pageId="3" pageNumber="1479">Figure 2G</figureCitation>
) outer lobe broad, lateral lobe long, inner lobe indistinct. Maxilla 1 (
<figureCitation id="2FC735CCFFB0FF81DF0BABBC26ECF9FD" box="[840,979,1512,1536]" captionStart="Figure 2" captionStartId="4.[143,210,1584,1606]" captionTargetBox="[143,1102,161,1551]" captionTargetId="figure-5@4.[143,1102,161,1551]" captionTargetPageId="4" captionText="Figure 2. Stephonyx perexcavatus sp. nov., (A, CM) holotype, male (22.9 mm), NSMT-Cr 22011; (B) paratype, male (23.2 mm), NSMT-Cr 22020, Okinawa Trough. (A, B) Heads, lateral views; (C) right antenna 1, medial view; (D) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (E) right antenna 2, medial view;" figureDoi="http://doi.org/10.5281/zenodo.5200213" httpUri="https://zenodo.org/record/5200213/files/figure.png" pageId="3" pageNumber="1479">Figure 2JL</figureCitation>
) with ovate inner plate, bearing three plumose setae apically; outer plate narrow, with 11 spine-teeth in a 7/4 crown arrangement; palp two-articulate, terminal article with eight broad setae and slender seta. Maxilla 2 (
<figureCitation id="2FC735CCFFB0FF81DE1DA81327E3F9A2" box="[606,732,1607,1631]" captionStart="Figure 2" captionStartId="4.[143,210,1584,1606]" captionTargetBox="[143,1102,161,1551]" captionTargetId="figure-5@4.[143,1102,161,1551]" captionTargetPageId="4" captionText="Figure 2. Stephonyx perexcavatus sp. nov., (A, CM) holotype, male (22.9 mm), NSMT-Cr 22011; (B) paratype, male (23.2 mm), NSMT-Cr 22020, Okinawa Trough. (A, B) Heads, lateral views; (C) right antenna 1, medial view; (D) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (E) right antenna 2, medial view;" figureDoi="http://doi.org/10.5281/zenodo.5200213" httpUri="https://zenodo.org/record/5200213/files/figure.png" pageId="3" pageNumber="1479">Figure 2M</figureCitation>
) plates narrow and setose, inner plate shorter than outer plate. Maxilliped (
<figureCitation id="2FC735CCFFB0FF81DE3DA8332629F982" box="[638,790,1639,1663]" captionStart="Figure 3" captionStartId="6.[143,210,1501,1523]" captionTargetBox="[162,1084,161,1468]" captionTargetId="figure-5@6.[162,1084,161,1468]" captionTargetPageId="6" captionText="Figure 3. Stephonyx perexcavatus sp. nov., holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (A) Maxilliped (inner plate twisted outward), dorsal view; (B) inner plate of maxilliped, dorsal view; (C) right gnathopod 1, ventral view; (D) propodus and dactylus of right gnathopod 1, medial view; (E) distal parts of propodus and dactylus of right gnathopod 1, medial view; (F) right gnathopod 2, medial view; (G) propodus and dactylus of right gnathopod 2, medial view; (H) palmar margin of propodus and dactylus of right gnathopod 2, medial view; (I) right pereopod 3, medial view; (J) dactylus of right pereopod 3, medial view; (K) right pereopod 4, medial view." figureDoi="http://doi.org/10.5281/zenodo.5200215" httpUri="https://zenodo.org/record/5200215/files/figure.png" pageId="3" pageNumber="1479">Figure 3A, B</figureCitation>
) with subrectangular inner plate, bearing two nodular robust setae on inner distal corner and one on outer distal corner, oblique setal row well developed; outer plate large, subovate, with apical robust setae and plumose setae; palp four-articulate, dactylus with unguis.
</paragraph>
<caption id="E38379C1FFB7FF86DCCCA864216FF960" ID-DOI="http://doi.org/10.5281/zenodo.5200213" ID-Zenodo-Dep="5200213" httpUri="https://zenodo.org/record/5200213/files/figure.png" pageId="4" pageNumber="1480" startId="4.[143,210,1584,1606]" targetBox="[143,1102,161,1551]" targetPageId="4">
<paragraph id="B7432949FFB7FF86DCCCA864216FF960" blockId="4.[143,1104,1584,1693]" pageId="4" pageNumber="1480">
Figure 2.
<taxonomicName id="70FC52CAFFB7FF86DCB8A86424D2F9BB" authority="Narahara &amp; Tomikawa &amp; Torigoe, 2012" authorityName="Narahara &amp; Tomikawa &amp; Torigoe" authorityYear="2012" box="[251,493,1584,1606]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="4" pageNumber="1480" phylum="Arthropoda" rank="species" species="perexcavatus" status="sp. nov.">
<emphasis id="8588F55BFFB7FF86DCB8A86424D2F9BB" box="[251,493,1584,1606]" italics="true" pageId="4" pageNumber="1480">Stephonyx perexcavatus</emphasis>
</taxonomicName>
<emphasis id="8588F55BFFB7FF86DDB4A864277CF9BB" bold="true" box="[503,579,1584,1606]" pageId="4" pageNumber="1480">
<taxonomicNameLabel id="9EBB4820FFB7FF86DDB4A864277CF9BB" box="[503,579,1584,1606]" pageId="4" pageNumber="1480" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, (A, CM) holotype, male (22.9 mm), NSMT-Cr 22011; (B) paratype, male (23.2 mm), NSMT-Cr 22020, Okinawa Trough. (A, B) Heads, lateral views; (C) right antenna 1, medial view; (D) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (E) right antenna 2, medial view;
</paragraph>
</caption>
<paragraph id="B7432949FFB6FF87DCBDAF532478FC21" blockId="5.[211,1172,167,1498]" pageId="5" pageNumber="1481">
Gnathopod 1 (
<figureCitation id="2FC735CCFFB6FF87DDF1AF532773FEE2" box="[434,588,263,287]" captionStart="Figure 3" captionStartId="6.[143,210,1501,1523]" captionTargetBox="[162,1084,161,1468]" captionTargetId="figure-5@6.[162,1084,161,1468]" captionTargetPageId="6" captionText="Figure 3. Stephonyx perexcavatus sp. nov., holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (A) Maxilliped (inner plate twisted outward), dorsal view; (B) inner plate of maxilliped, dorsal view; (C) right gnathopod 1, ventral view; (D) propodus and dactylus of right gnathopod 1, medial view; (E) distal parts of propodus and dactylus of right gnathopod 1, medial view; (F) right gnathopod 2, medial view; (G) propodus and dactylus of right gnathopod 2, medial view; (H) palmar margin of propodus and dactylus of right gnathopod 2, medial view; (I) right pereopod 3, medial view; (J) dactylus of right pereopod 3, medial view; (K) right pereopod 4, medial view." figureDoi="http://doi.org/10.5281/zenodo.5200215" httpUri="https://zenodo.org/record/5200215/files/figure.png" pageId="5" pageNumber="1481">Figure 3CE</figureCitation>
) with reduced coxa, subquadrate; anterior margin of basis straight with slender setae, posterior margin bare; ischium elongate, 5.6 times width, 0.6 times basis; merus short; carpus linear, elongate, 7.3 times width and subequal to propodus in length, margins subparallel, anterior margin without setae, straight; palmar margin of propodus serrate, slightly convex, distal corner with one lateral and one medial tooth; dactylus 0.3 times propodus, distally bifid with medial seta. Gnathopod 2 (
<figureCitation id="2FC735CCFFB6FF87DE8CAF922656FE23" box="[719,873,454,478]" captionStart="Figure 3" captionStartId="6.[143,210,1501,1523]" captionTargetBox="[162,1084,161,1468]" captionTargetId="figure-5@6.[162,1084,161,1468]" captionTargetPageId="6" captionText="Figure 3. Stephonyx perexcavatus sp. nov., holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (A) Maxilliped (inner plate twisted outward), dorsal view; (B) inner plate of maxilliped, dorsal view; (C) right gnathopod 1, ventral view; (D) propodus and dactylus of right gnathopod 1, medial view; (E) distal parts of propodus and dactylus of right gnathopod 1, medial view; (F) right gnathopod 2, medial view; (G) propodus and dactylus of right gnathopod 2, medial view; (H) palmar margin of propodus and dactylus of right gnathopod 2, medial view; (I) right pereopod 3, medial view; (J) dactylus of right pereopod 3, medial view; (K) right pereopod 4, medial view." figureDoi="http://doi.org/10.5281/zenodo.5200215" httpUri="https://zenodo.org/record/5200215/files/figure.png" pageId="5" pageNumber="1481">Figure 3FH</figureCitation>
) with large coxa, slightly smaller than coxa 3, anterior margin convex; basis elongate, posterior margin weakly curved, anterior margin with minute setae; ischium elongate, 3.9 times width; posterior margin of merus rounded; carpus linear, elongate, 5.1 times width, margins subparallel; propodus oval, expanding distally, length 1.6 times width; palmar margin of propodus deeply concave, posterodistal corner 93
<superScript id="40898401FFB6FF87DF0BAC36266EFD8E" attach="left" box="[840,849,610,627]" fontSize="7" pageId="5" pageNumber="1481"></superScript>
, with six medial stout setae; dactylus not reaching palmar corner. Pereopod 3 (
<figureCitation id="2FC735CCFFB6FF87DF5EACD22698FD63" box="[797,935,646,670]" captionStart="Figure 3" captionStartId="6.[143,210,1501,1523]" captionTargetBox="[162,1084,161,1468]" captionTargetId="figure-5@6.[162,1084,161,1468]" captionTargetPageId="6" captionText="Figure 3. Stephonyx perexcavatus sp. nov., holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (A) Maxilliped (inner plate twisted outward), dorsal view; (B) inner plate of maxilliped, dorsal view; (C) right gnathopod 1, ventral view; (D) propodus and dactylus of right gnathopod 1, medial view; (E) distal parts of propodus and dactylus of right gnathopod 1, medial view; (F) right gnathopod 2, medial view; (G) propodus and dactylus of right gnathopod 2, medial view; (H) palmar margin of propodus and dactylus of right gnathopod 2, medial view; (I) right pereopod 3, medial view; (J) dactylus of right pereopod 3, medial view; (K) right pereopod 4, medial view." figureDoi="http://doi.org/10.5281/zenodo.5200215" httpUri="https://zenodo.org/record/5200215/files/figure.png" pageId="5" pageNumber="1481">Figure 3I, J</figureCitation>
) subequal in size to pereopod 4; coxa subrectangular; propodus slender; dactylus simple, with posteroproximal crenulations. Pereopod 4 (
<figureCitation id="2FC735CCFFB6FF87DE33AC9127D5FD20" box="[624,746,709,733]" captionStart="Figure 3" captionStartId="6.[143,210,1501,1523]" captionTargetBox="[162,1084,161,1468]" captionTargetId="figure-5@6.[162,1084,161,1468]" captionTargetPageId="6" captionText="Figure 3. Stephonyx perexcavatus sp. nov., holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (A) Maxilliped (inner plate twisted outward), dorsal view; (B) inner plate of maxilliped, dorsal view; (C) right gnathopod 1, ventral view; (D) propodus and dactylus of right gnathopod 1, medial view; (E) distal parts of propodus and dactylus of right gnathopod 1, medial view; (F) right gnathopod 2, medial view; (G) propodus and dactylus of right gnathopod 2, medial view; (H) palmar margin of propodus and dactylus of right gnathopod 2, medial view; (I) right pereopod 3, medial view; (J) dactylus of right pereopod 3, medial view; (K) right pereopod 4, medial view." figureDoi="http://doi.org/10.5281/zenodo.5200215" httpUri="https://zenodo.org/record/5200215/files/figure.png" pageId="5" pageNumber="1481">Figure 3K</figureCitation>
) coxa exceeding distal part of basis, with well-developed posteroventral lobe; basis length 4.1 times width; merus short, 0.2 times basis; propodus slender; dactylus simple. Pereopod 5 (
<figureCitation id="2FC735CCFFB6FF87DF91AD512172FCE0" box="[978,1101,773,797]" captionStart="Figure 4" captionStartId="7.[211,278,1326,1348]" captionTargetBox="[213,1169,169,1294]" captionTargetId="figure-5@7.[211,1170,169,1294]" captionTargetPageId="7" captionText="Figure 4. Stephonyx perexcavatus sp. nov., holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (AC) Right pereopods 57, medial views; (DF) left coxal gills 24, lateral views." figureDoi="http://doi.org/10.5281/zenodo.5200217" httpUri="https://zenodo.org/record/5200217/files/figure.png" pageId="5" pageNumber="1481">Figure 4A</figureCitation>
) with bilobed coxa; posteroventral lobe of basis developed, posterior margins of basis and merus expanded. Pereopod 6 (
<figureCitation id="2FC735CCFFB6FF87DE6EAD11279DFCA0" box="[557,674,837,861]" captionStart="Figure 4" captionStartId="7.[211,278,1326,1348]" captionTargetBox="[213,1169,169,1294]" captionTargetId="figure-5@7.[211,1170,169,1294]" captionTargetPageId="7" captionText="Figure 4. Stephonyx perexcavatus sp. nov., holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (AC) Right pereopods 57, medial views; (DF) left coxal gills 24, lateral views." figureDoi="http://doi.org/10.5281/zenodo.5200217" httpUri="https://zenodo.org/record/5200217/files/figure.png" pageId="5" pageNumber="1481">Figure 4B</figureCitation>
) with subrectangular coxa, weakly bilobed; posteroventral lobe of basis developed; posterior margin of merus broadly expanded. Pereopod 7 (
<figureCitation id="2FC735CCFFB6FF87DD27ADD124E6FC60" box="[356,473,901,925]" captionStart="Figure 4" captionStartId="7.[211,278,1326,1348]" captionTargetBox="[213,1169,169,1294]" captionTargetId="figure-5@7.[211,1170,169,1294]" captionTargetPageId="7" captionText="Figure 4. Stephonyx perexcavatus sp. nov., holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (AC) Right pereopods 57, medial views; (DF) left coxal gills 24, lateral views." figureDoi="http://doi.org/10.5281/zenodo.5200217" httpUri="https://zenodo.org/record/5200217/files/figure.png" pageId="5" pageNumber="1481">Figure 4C</figureCitation>
) with subquadrate coxa; posterior margin of basis expanded, weakly convex, posteroventral lobe developed; posterior margin of merus broadly expanded.
</paragraph>
<paragraph id="B7432949FFB6FF87DCBDADB0279CFB81" blockId="5.[211,1172,167,1498]" pageId="5" pageNumber="1481">
Coxal gills (
<figureCitation id="2FC735CCFFB6FF87DDC0ADB0271BFC01" box="[387,548,996,1020]" captionStart="Figure 4" captionStartId="7.[211,278,1326,1348]" captionTargetBox="[213,1169,169,1294]" captionTargetId="figure-5@7.[211,1170,169,1294]" captionTargetPageId="7" captionText="Figure 4. Stephonyx perexcavatus sp. nov., holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (AC) Right pereopods 57, medial views; (DF) left coxal gills 24, lateral views." figureDoi="http://doi.org/10.5281/zenodo.5200217" httpUri="https://zenodo.org/record/5200217/files/figure.png" pageId="5" pageNumber="1481">Figures 4DF</figureCitation>
,
<figureCitation id="2FC735CCFFB6FF87DE6CADB0274DFC01" box="[559,626,996,1020]" captionStart="Figure 5" captionStartId="8.[143,210,1498,1520]" captionTargetBox="[143,1102,162,1466]" captionTargetId="figure-5@8.[143,1102,162,1466]" captionTargetPageId="8" captionText="Figure 5. Stephonyx perexcavatus sp. nov., (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views." figureDoi="http://doi.org/10.5281/zenodo.5200219" httpUri="https://zenodo.org/record/5200219/files/figure.png" pageId="5" pageNumber="1481">5AC</figureCitation>
) on gnathopod 2 and pereopods 37. Coxal gills 26 with accessory lobe; gill 2 subovate, exceeding distal part of basis; gills 35 pyriform, exceeding distal part of basis; gill 6 horizontally long, reaching middle of basis, proximal part of accessory lobe curled; and gill 7 subquadrate, exceeding distal margin of coxa, but not reaching middle of basis.
</paragraph>
<paragraph id="B7432949FFB6FF87DCBDAAD0213DFB06" blockId="5.[211,1172,167,1498]" pageId="5" pageNumber="1481">
Pleopods 13 (
<figureCitation id="2FC735CCFFB6FF87DDE0AAD02726FB61" box="[419,537,1156,1180]" captionStart="Figure 5" captionStartId="8.[143,210,1498,1520]" captionTargetBox="[143,1102,162,1466]" captionTargetId="figure-5@8.[143,1102,162,1466]" captionTargetPageId="8" captionText="Figure 5. Stephonyx perexcavatus sp. nov., (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views." figureDoi="http://doi.org/10.5281/zenodo.5200219" httpUri="https://zenodo.org/record/5200219/files/figure.png" pageId="5" pageNumber="1481">Figure 5D</figureCitation>
) with paired retinacula (
<figureCitation id="2FC735CCFFB6FF87DF6CAAD0269EFB61" box="[815,929,1156,1180]" captionStart="Figure 5" captionStartId="8.[143,210,1498,1520]" captionTargetBox="[143,1102,162,1466]" captionTargetId="figure-5@8.[143,1102,162,1466]" captionTargetPageId="8" captionText="Figure 5. Stephonyx perexcavatus sp. nov., (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views." figureDoi="http://doi.org/10.5281/zenodo.5200219" httpUri="https://zenodo.org/record/5200219/files/figure.png" pageId="5" pageNumber="1481">Figure 5E</figureCitation>
) and associated setae on inner distal corners of peduncles; inner basal margins of inner rami with 711 bifid plumose setae (clothes-pin setae) (
<figureCitation id="2FC735CCFFB6FF87DE15AA9727F4FB26" box="[598,715,1219,1243]" captionStart="Figure 5" captionStartId="8.[143,210,1498,1520]" captionTargetBox="[143,1102,162,1466]" captionTargetId="figure-5@8.[143,1102,162,1466]" captionTargetPageId="8" captionText="Figure 5. Stephonyx perexcavatus sp. nov., (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views." figureDoi="http://doi.org/10.5281/zenodo.5200219" httpUri="https://zenodo.org/record/5200219/files/figure.png" pageId="5" pageNumber="1481">Figure 5F</figureCitation>
); inner rami of pleopods 13 24, 25 and 24-articulate, respectively; outer rami of pleopods 13 each 27-articulate.
</paragraph>
<paragraph id="B7432949FFB6FF85DCBDAB572448F9A7" blockId="5.[211,1172,167,1498]" lastBlockId="7.[211,1172,1474,1690]" lastPageId="7" lastPageNumber="1483" pageId="5" pageNumber="1481">
Uropod 1 (
<figureCitation id="2FC735CCFFB6FF87DD3FAB5724D6FAE6" box="[380,489,1283,1307]" captionStart="Figure 5" captionStartId="8.[143,210,1498,1520]" captionTargetBox="[143,1102,162,1466]" captionTargetId="figure-5@8.[143,1102,162,1466]" captionTargetPageId="8" captionText="Figure 5. Stephonyx perexcavatus sp. nov., (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views." figureDoi="http://doi.org/10.5281/zenodo.5200219" httpUri="https://zenodo.org/record/5200219/files/figure.png" pageId="5" pageNumber="1481">Figure 5J</figureCitation>
) peduncle with medial and lateral robust setae; outer ramus 0.9 times peduncle, bearing nine lateral and seven medial marginal robust setae and terminal robust seta; inner ramus 1.1 times outer ramus, bearing eight lateral and 13 medial marginal robust setae and terminal robust seta. Uropod 2 (
<figureCitation id="2FC735CCFFB6FF87D853AB3721B4FA86" box="[1040,1163,1379,1403]" captionStart="Figure 5" captionStartId="8.[143,210,1498,1520]" captionTargetBox="[143,1102,162,1466]" captionTargetId="figure-5@8.[143,1102,162,1466]" captionTargetPageId="8" captionText="Figure 5. Stephonyx perexcavatus sp. nov., (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views." figureDoi="http://doi.org/10.5281/zenodo.5200219" httpUri="https://zenodo.org/record/5200219/files/figure.png" pageId="5" pageNumber="1481">Figure 5K</figureCitation>
) peduncle with medial and lateral robust setae; outer ramus 1.0 times peduncle, lateral and medial margins each with eight and three robust setae, with terminal robust seta; inner ramus 1.3 times outer ramus, lateral and medial margins each with five and 16 robust setae, with terminal robust seta. Uropod 3 (
<figureCitation id="2FC735CCFFB4FF85DF6AAB9626A4FA27" box="[809,923,1474,1498]" captionStart="Figure 5" captionStartId="8.[143,210,1498,1520]" captionTargetBox="[143,1102,162,1466]" captionTargetId="figure-5@8.[143,1102,162,1466]" captionTargetPageId="8" captionText="Figure 5. Stephonyx perexcavatus sp. nov., (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views." figureDoi="http://doi.org/10.5281/zenodo.5200219" httpUri="https://zenodo.org/record/5200219/files/figure.png" pageId="7" pageNumber="1483">Figure 5L</figureCitation>
) with peduncle length 1.6 times width, laterodistal and mediodorsal corners with robust setae; outer ramus 1.6 times peduncle, two-articulate, medial margin of proximal article with plumose setae; inner ramus subequal in length to outer ramus, medial margin with numerous plumose setae.
</paragraph>
<footnote id="D4E73547FFB6FF87DC90A8652474F962" pageId="5" pageNumber="1481">
<paragraph id="B7432949FFB6FF87DC90A8652474F962" blockId="5.[211,1171,1585,1695]" pageId="5" pageNumber="1481">(F) epistome and upper lip, anterior view; (G) lower lip, ventral view; (H) left mandible, medial view; (I) incisor of right mandible, medial view; (J) maxilla 1, dorsal view; (K) outer plate of maxilla 1, dorsal view; (L) terminal article of palp of maxilla 1, dorsal view; (M) maxilla 2, dorsal view.</paragraph>
</footnote>
<caption id="E38379C1FFB5FF84DCCCAB8924B4F93D" ID-DOI="http://doi.org/10.5281/zenodo.5200215" ID-Zenodo-Dep="5200215" httpUri="https://zenodo.org/record/5200215/files/figure.png" pageId="6" pageNumber="1482" startId="6.[143,210,1501,1523]" targetBox="[162,1084,161,1468]" targetPageId="6">
<paragraph id="B7432949FFB5FF84DCCCAB8924B4F93D" blockId="6.[143,1104,1501,1728]" pageId="6" pageNumber="1482">
Figure 3.
<taxonomicName id="70FC52CAFFB5FF84DCBDAB8924CAFA0E" authority="Narahara &amp; Tomikawa &amp; Torigoe, 2012" authorityName="Narahara &amp; Tomikawa &amp; Torigoe" authorityYear="2012" box="[254,501,1501,1523]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="6" pageNumber="1482" phylum="Arthropoda" rank="species" species="perexcavatus" status="sp. nov.">
<emphasis id="8588F55BFFB5FF84DCBDAB8924CAFA0E" box="[254,501,1501,1523]" italics="true" pageId="6" pageNumber="1482">Stephonyx perexcavatus</emphasis>
</taxonomicName>
<emphasis id="8588F55BFFB5FF84DE40AB89276DFA0E" bold="true" box="[515,594,1501,1523]" pageId="6" pageNumber="1482">
<taxonomicNameLabel id="9EBB4820FFB5FF84DE40AB89276DFA0E" box="[515,594,1501,1523]" pageId="6" pageNumber="1482" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (A) Maxilliped (inner plate twisted outward), dorsal view; (B) inner plate of maxilliped, dorsal view; (C) right gnathopod 1, ventral view; (D) propodus and dactylus of right gnathopod 1, medial view; (E) distal parts of propodus and dactylus of right gnathopod 1, medial view; (F) right gnathopod 2, medial view; (G) propodus and dactylus of right gnathopod 2, medial view; (H) palmar margin of propodus and dactylus of right gnathopod 2, medial view; (I) right pereopod 3, medial view; (J) dactylus of right pereopod 3, medial view; (K) right pereopod 4, medial view.
</paragraph>
</caption>
<caption id="E38379C1FFB4FF85DC90AB7A242FFA82" ID-DOI="http://doi.org/10.5281/zenodo.5200217" ID-Zenodo-Dep="5200217" httpUri="https://zenodo.org/record/5200217/files/figure.png" pageId="7" pageNumber="1483" startId="7.[211,278,1326,1348]" targetBox="[213,1169,169,1294]" targetPageId="7">
<paragraph id="B7432949FFB4FF85DC90AB7A242FFA82" blockId="7.[211,1172,1326,1407]" pageId="7" pageNumber="1483">
Figure 4.
<taxonomicName id="70FC52CAFFB4FF85DD01AB7B2707FAB9" authority="Narahara &amp; Tomikawa &amp; Torigoe, 2012" authorityName="Narahara &amp; Tomikawa &amp; Torigoe" authorityYear="2012" box="[322,568,1327,1349]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="7" pageNumber="1483" phylum="Arthropoda" rank="species" species="perexcavatus" status="sp. nov.">
<emphasis id="8588F55BFFB4FF85DD01AB7B2707FAB9" box="[322,568,1327,1349]" italics="true" pageId="7" pageNumber="1483">Stephonyx perexcavatus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="9EBB4820FFB4FF85DE05AB7B27A3FAB9" box="[582,668,1327,1348]" pageId="7" pageNumber="1483" rank="species">sp. nov.</taxonomicNameLabel>
, holotype, male (22.9 mm), NSMT-Cr 22011, Okinawa Trough. (AC) Right pereopods 57, medial views; (DF) left coxal gills 24, lateral views.
</paragraph>
</caption>
<paragraph id="B7432949FFB4FF85DCBDA83621B8F967" blockId="7.[211,1172,1474,1690]" pageId="7" pageNumber="1483">
Telson (
<figureCitation id="2FC735CCFFB4FF85DD19A83624E7F987" box="[346,472,1634,1658]" captionStart="Figure 5" captionStartId="8.[143,210,1498,1520]" captionTargetBox="[143,1102,162,1466]" captionTargetId="figure-5@8.[143,1102,162,1466]" captionTargetPageId="8" captionText="Figure 5. Stephonyx perexcavatus sp. nov., (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views." figureDoi="http://doi.org/10.5281/zenodo.5200219" httpUri="https://zenodo.org/record/5200219/files/figure.png" pageId="7" pageNumber="1483">Figure 5M</figureCitation>
) length 1.7 times width, cleft 88% of length, distal margins slightly incised, with one penicillate setae and two or three robust setae on each lobe.
</paragraph>
<caption id="E38379C1FFBBFF8ADCCCAB8E268EF95D" ID-DOI="http://doi.org/10.5281/zenodo.5200219" ID-Zenodo-Dep="5200219" httpUri="https://zenodo.org/record/5200219/files/figure.png" pageId="8" pageNumber="1484" startId="8.[143,210,1498,1520]" targetBox="[143,1102,162,1466]" targetPageId="8">
<paragraph id="B7432949FFBBFF8ADCCCAB8E268EF95D" blockId="8.[143,1104,1498,1696]" pageId="8" pageNumber="1484">
Figure 5.
<taxonomicName id="70FC52CAFFBBFF8ADCB5AB8F24DAFA0D" authority="Narahara &amp; Tomikawa &amp; Torigoe, 2012" authorityName="Narahara &amp; Tomikawa &amp; Torigoe" authorityYear="2012" box="[246,485,1499,1521]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="8" pageNumber="1484" phylum="Arthropoda" rank="species" species="perexcavatus" status="sp. nov.">
<emphasis id="8588F55BFFBBFF8ADCB5AB8F24DAFA0D" box="[246,485,1499,1521]" italics="true" pageId="8" pageNumber="1484">Stephonyx perexcavatus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="9EBB4820FFBBFF8ADDA8AB8F2706FA0D" box="[491,569,1499,1520]" pageId="8" pageNumber="1484" rank="species">sp. nov.</taxonomicNameLabel>
, (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views.
</paragraph>
</caption>
<caption id="E38379C1FFBAFF8BDC90AD10264BFC32" ID-DOI="http://doi.org/10.5281/zenodo.5200221" ID-Zenodo-Dep="5200221" httpUri="https://zenodo.org/record/5200221/files/figure.png" pageId="9" pageNumber="1485" startId="9.[211,278,836,858]" targetBox="[212,1170,168,803]" targetPageId="9">
<paragraph id="B7432949FFBAFF8BDC90AD10264BFC32" blockId="9.[211,1172,836,975]" pageId="9" pageNumber="1485">
Figure 6.
<taxonomicName id="70FC52CAFFBAFF8BDD03AD10270BFCA7" authority="Narahara &amp; Tomikawa &amp; Torigoe, 2012" authorityName="Narahara &amp; Tomikawa &amp; Torigoe" authorityYear="2012" box="[320,564,836,858]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="9" pageNumber="1485" phylum="Arthropoda" rank="species" species="perexcavatus" status="sp. nov.">
<emphasis id="8588F55BFFBAFF8BDD03AD10270BFCA7" box="[320,564,836,858]" italics="true" pageId="9" pageNumber="1485">Stephonyx perexcavatus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="9EBB4820FFBAFF8BDE7CAD1027ACFCA4" box="[575,659,836,857]" pageId="9" pageNumber="1485" rank="species">sp. nov.</taxonomicNameLabel>
, (AC, E) paratype, female (21.9 mm), NSMT- Cr 22018; (D) paratype, female (22.6 mm), NNSMT-Cr 22016, Okinawa Trough. (A) Right antenna 1, medial view; (B) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (C) right antenna 2, medial view; (D) oostegite of right gnathopod 2, medial view; (E) right uropod 3, dorsal view.
</paragraph>
</caption>
<paragraph id="B7432949FFBAFF8BDC90AA592634FBD9" blockId="9.[211,779,1036,1060]" box="[211,779,1036,1060]" pageId="9" pageNumber="1485">
<emphasis id="8588F55BFFBAFF8BDC90AA592634FBD9" box="[211,779,1036,1060]" italics="true" pageId="9" pageNumber="1485">
Description of female (
<typeStatus id="684797EBFFBAFF8BDD8EAA58270BFBD9" box="[461,564,1036,1060]" pageId="9" pageNumber="1485" type="paratype">paratype</typeStatus>
, NSMT-Cr 22018)
</emphasis>
</paragraph>
<paragraph id="B7432949FFBAFF8BDC90AA602100FB16" blockId="9.[211,1172,1076,1259]" pageId="9" pageNumber="1485">
Similar to male, except the following. Antenna 1 (
<figureCitation id="2FC735CCFFBAFF8BDF55AA60268FFBB1" box="[790,944,1076,1100]" captionStart="Figure 6" captionStartId="9.[211,278,836,858]" captionTargetBox="[212,1170,168,803]" captionTargetId="figure-5@9.[211,1170,167,803]" captionTargetPageId="9" captionText="Figure 6. Stephonyx perexcavatus sp. nov., (AC, E) paratype, female (21.9 mm), NSMT- Cr 22018; (D) paratype, female (22.6 mm), NNSMT-Cr 22016, Okinawa Trough. (A) Right antenna 1, medial view; (B) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (C) right antenna 2, medial view; (D) oostegite of right gnathopod 2, medial view; (E) right uropod 3, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.5200221" httpUri="https://zenodo.org/record/5200221/files/figure.png" pageId="9" pageNumber="1485">Figure 6A, B</figureCitation>
) with primary flagellum 22-articulate, calceoli absent; callynophore much smaller in size, 17 rows. Antenna 2 (
<figureCitation id="2FC735CCFFBAFF8BDD1BAA2024F3FB71" box="[344,460,1140,1164]" captionStart="Figure 6" captionStartId="9.[211,278,836,858]" captionTargetBox="[212,1170,168,803]" captionTargetId="figure-5@9.[211,1170,167,803]" captionTargetPageId="9" captionText="Figure 6. Stephonyx perexcavatus sp. nov., (AC, E) paratype, female (21.9 mm), NSMT- Cr 22018; (D) paratype, female (22.6 mm), NNSMT-Cr 22016, Okinawa Trough. (A) Right antenna 1, medial view; (B) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (C) right antenna 2, medial view; (D) oostegite of right gnathopod 2, medial view; (E) right uropod 3, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.5200221" httpUri="https://zenodo.org/record/5200221/files/figure.png" pageId="9" pageNumber="1485">Figure 6C</figureCitation>
) 1.7 times antenna 1, anterior margins of articles 4 and 5 lacking brush setae, flagellum 39-articulate, calceoli absent. Medial margin of outer ramus of uropod 3 (
<figureCitation id="2FC735CCFFBAFF8BDD31AAE724D6FB36" box="[370,489,1203,1227]" captionStart="Figure 6" captionStartId="9.[211,278,836,858]" captionTargetBox="[212,1170,168,803]" captionTargetId="figure-5@9.[211,1170,167,803]" captionTargetPageId="9" captionText="Figure 6. Stephonyx perexcavatus sp. nov., (AC, E) paratype, female (21.9 mm), NSMT- Cr 22018; (D) paratype, female (22.6 mm), NNSMT-Cr 22016, Okinawa Trough. (A) Right antenna 1, medial view; (B) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (C) right antenna 2, medial view; (D) oostegite of right gnathopod 2, medial view; (E) right uropod 3, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.5200221" httpUri="https://zenodo.org/record/5200221/files/figure.png" pageId="9" pageNumber="1485">Figure 6E</figureCitation>
) bearing fewer plumose setae. Oostegites (
<figureCitation id="2FC735CCFFBAFF8BDFA5AAE7215DFB36" box="[998,1122,1203,1227]" captionStart="Figure 6" captionStartId="9.[211,278,836,858]" captionTargetBox="[212,1170,168,803]" captionTargetId="figure-5@9.[211,1170,167,803]" captionTargetPageId="9" captionText="Figure 6. Stephonyx perexcavatus sp. nov., (AC, E) paratype, female (21.9 mm), NSMT- Cr 22018; (D) paratype, female (22.6 mm), NNSMT-Cr 22016, Okinawa Trough. (A) Right antenna 1, medial view; (B) peduncular articles 13, primary flagellar articles 13, and accessory flagellum of right antenna 1, medial view; (C) right antenna 2, medial view; (D) oostegite of right gnathopod 2, medial view; (E) right uropod 3, dorsal view." figureDoi="http://doi.org/10.5281/zenodo.5200221" httpUri="https://zenodo.org/record/5200221/files/figure.png" pageId="9" pageNumber="1485">Figure 6D</figureCitation>
) on gnathopod 2 and pereopods 35, baculiform, margins irregular, without setae.
</paragraph>
<paragraph id="B7432949FFBAFF8BDC90AB482405FACE" blockId="9.[211,314,1308,1331]" box="[211,314,1308,1331]" pageId="9" pageNumber="1485">
<emphasis id="8588F55BFFBAFF8BDC90AB482405FACE" box="[211,314,1308,1331]" italics="true" pageId="9" pageNumber="1485">Variation</emphasis>
</paragraph>
<paragraph id="B7432949FFBAFF8BDC90AB172641FA86" blockId="9.[211,1172,1343,1403]" pageId="9" pageNumber="1485">
Posterodistal corner of propodus of gnathopod 2 91102
<superScript id="40898401FFBAFF8BDF11AB6B2664FAAD" attach="left" box="[850,859,1343,1360]" fontSize="7" pageId="9" pageNumber="1485"></superScript>
(
<emphasis id="8588F55BFFBAFF8BDF2EAB102645FAA6" box="[877,890,1348,1371]" italics="true" pageId="9" pageNumber="1485">n</emphasis>
= 10). Dorsal surface of telson with (
<figureCitation id="2FC735CCFFBAFF8BDD1EAB3724ECFA86" box="[349,467,1379,1403]" captionStart="Figure 5" captionStartId="8.[143,210,1498,1520]" captionTargetBox="[143,1102,162,1466]" captionTargetId="figure-5@8.[143,1102,162,1466]" captionTargetPageId="8" captionText="Figure 5. Stephonyx perexcavatus sp. nov., (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views." figureDoi="http://doi.org/10.5281/zenodo.5200219" httpUri="https://zenodo.org/record/5200219/files/figure.png" pageId="9" pageNumber="1485">Figure 5N</figureCitation>
) or without (
<figureCitation id="2FC735CCFFBAFF8BDE2BAB3727DDFA86" box="[616,738,1379,1403]" captionStart="Figure 5" captionStartId="8.[143,210,1498,1520]" captionTargetBox="[143,1102,162,1466]" captionTargetId="figure-5@8.[143,1102,162,1466]" captionTargetPageId="8" captionText="Figure 5. Stephonyx perexcavatus sp. nov., (AM) holotype, male (22.9 mm), NSMT-Cr 22011; (N) paratype, female (22.2 mm), NSMT-Cr 22017, Okinawa Trough. (AC) Left coxal gills 57 (attached place of coxal gill 7 to coxa indicated by arrowhead), lateral views; (D) right pleopod 1, anterior view; (E) retinacula on peduncle of right pleopod 1, anterior view; (F) distal end of bifid plumose setae (clothes-pin setae) on inner basal margin of inner ramus of right pleopod 1, anterior view; (GI) right epimeral plates 13, medial views; (JL) right uropods 13, dorsal views; (M, N) telsons (dorsal robust seta indicated by arrowhead), dorsal views." figureDoi="http://doi.org/10.5281/zenodo.5200219" httpUri="https://zenodo.org/record/5200219/files/figure.png" pageId="9" pageNumber="1485">Figure 5M</figureCitation>
) robust setae.
</paragraph>
<paragraph id="B7432949FFBAFF8BDC90ABFF2467FA3E" blockId="9.[211,344,1451,1475]" box="[211,344,1451,1475]" pageId="9" pageNumber="1485">
<emphasis id="8588F55BFFBAFF8BDC90ABFF2467FA3E" box="[211,344,1451,1475]" italics="true" pageId="9" pageNumber="1485">Distribution</emphasis>
</paragraph>
<paragraph id="B7432949FFBAFF8BDC90AB86276DFA17" blockId="9.[211,594,1490,1514]" box="[211,594,1490,1514]" pageId="9" pageNumber="1485">
Okinawa Trough, East
<collectingCountry id="CFEB69D9FFBAFF8BDD94AB862723FA17" box="[471,540,1490,1514]" name="China" pageId="9" pageNumber="1485">China</collectingCountry>
Sea.
</paragraph>
<paragraph id="B7432949FFBAFF8BDC90A84E2474F9CF" blockId="9.[211,331,1562,1586]" box="[211,331,1562,1586]" pageId="9" pageNumber="1485">
<emphasis id="8588F55BFFBAFF8BDC90A84E2474F9CF" box="[211,331,1562,1586]" italics="true" pageId="9" pageNumber="1485">Etymology</emphasis>
</paragraph>
<paragraph id="B7432949FFBAFF8BDC90A8162456F967" blockId="9.[211,1172,1602,1690]" pageId="9" pageNumber="1485">
The specific name “
<taxonomicName id="70FC52CAFFBAFF8BDD81A8172770F9A7" authorityName="Narahara &amp; Tomikawa &amp; Torigoe" authorityYear="2012" box="[450,591,1603,1626]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="9" pageNumber="1485" phylum="Arthropoda" rank="species" species="perexcavatus">
<emphasis id="8588F55BFFBAFF8BDD81A8172770F9A7" box="[450,591,1603,1626]" italics="true" pageId="9" pageNumber="1485">perexcavatus</emphasis>
</taxonomicName>
”, an adjective, is derived from
<emphasis id="8588F55BFFBAFF8BDF93A81726CCF9A7" box="[976,1011,1603,1626]" italics="true" pageId="9" pageNumber="1485">per</emphasis>
(Latin; very) and
<emphasis id="8588F55BFFBAFF8BDD49A837244AF987" box="[266,373,1635,1658]" italics="true" pageId="9" pageNumber="1485">excavatus</emphasis>
(Latin; concave) referring to the deeply concave palmar margin of gnathopod 2.
</paragraph>
<paragraph id="B7432949FFB9FF88DCCCAEFC25CEFF3D" blockId="10.[143,241,168,192]" box="[143,241,168,192]" pageId="10" pageNumber="1486">
<emphasis id="8588F55BFFB9FF88DCCCAEFC25CEFF3D" box="[143,241,168,192]" italics="true" pageId="10" pageNumber="1486">Remarks</emphasis>
</paragraph>
<paragraph id="B7432949FFB9FF88DCCCAE9B260BFDBB" blockId="10.[143,1104,207,739]" pageId="10" pageNumber="1486">
<taxonomicName id="70FC52CAFFB9FF88DCCCAE9B24A1FF1A" authority="Narahara &amp; Tomikawa &amp; Torigoe, 2012" authorityName="Narahara &amp; Tomikawa &amp; Torigoe" authorityYear="2012" box="[143,414,207,231]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="perexcavatus" status="sp. nov.">
<emphasis id="8588F55BFFB9FF88DCCCAE9B24A1FF1A" box="[143,414,207,231]" italics="true" pageId="10" pageNumber="1486">Stephonyx perexcavatus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="9EBB4820FFB9FF88DDE9AE84273BFF1A" box="[426,516,208,231]" pageId="10" pageNumber="1486" rank="species">sp. nov.</taxonomicNameLabel>
is similar to
<taxonomicName id="70FC52CAFFB9FF88DEE9AE9B2605FF1A" authorityName="Diffenthal and Horton" authorityYear="2007" box="[682,826,207,231]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="arabiensis">
<emphasis id="8588F55BFFB9FF88DEE9AE9B2605FF1A" box="[682,826,207,231]" italics="true" pageId="10" pageNumber="1486">S. arabiensis</emphasis>
</taxonomicName>
,
<taxonomicName id="70FC52CAFFB9FF88DF0DAE9B26FCFF1A" baseAuthorityName="Barnard" baseAuthorityYear="1967" box="[846,963,207,231]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="laqueus">
<emphasis id="8588F55BFFB9FF88DF0DAE9B26FCFF1A" box="[846,963,207,231]" italics="true" pageId="10" pageNumber="1486">S. laqueus</emphasis>
</taxonomicName>
and
<taxonomicName id="70FC52CAFFB9FF88D845AE9B25E8FEFA" baseAuthorityName="Chevreux" baseAuthorityYear="1919" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="talismani">
<emphasis id="8588F55BFFB9FF88D845AE9B25E8FEFA" italics="true" pageId="10" pageNumber="1486">S. talismani</emphasis>
</taxonomicName>
in having article 1 of mandibular palp shorter than 0.5 times article 2, carpus of gnathopod 1 longer than 0.75 times propodus, concave palmar margin of gnathopod 2 and truncated distal margin of telson. However, the present new species is distinguished from the above species in the following features: from
<taxonomicName id="70FC52CAFFB9FF88DCCCAF3B2425FE7A" authorityName="Diffenthal and Horton" authorityYear="2007" box="[143,282,367,391]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="arabiensis">
<emphasis id="8588F55BFFB9FF88DCCCAF3B2425FE7A" box="[143,282,367,391]" italics="true" pageId="10" pageNumber="1486">S. arabiensis</emphasis>
</taxonomicName>
(features of
<taxonomicName id="70FC52CAFFB9FF88DDECAF3B2703FE7A" authorityName="Diffenthal and Horton" authorityYear="2007" box="[431,572,367,391]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="arabiensis">
<emphasis id="8588F55BFFB9FF88DDECAF3B2703FE7A" box="[431,572,367,391]" italics="true" pageId="10" pageNumber="1486">S. arabiensis</emphasis>
</taxonomicName>
in parentheses), lateral cephalic lobe rounded (sharply pointed), and palm of gnathopod 2 deeply concave (slightly concave); from
<taxonomicName id="70FC52CAFFB9FF88DCCCAFFB243EFE3A" baseAuthorityName="Barnard" baseAuthorityYear="1967" box="[143,257,431,455]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="laqueus">
<emphasis id="8588F55BFFB9FF88DCCCAFFB243EFE3A" box="[143,257,431,455]" italics="true" pageId="10" pageNumber="1486">S. laqueus</emphasis>
</taxonomicName>
(features of
<taxonomicName id="70FC52CAFFB9FF88DDD7AFFB273AFE3A" baseAuthorityName="Barnard" baseAuthorityYear="1967" box="[404,517,431,455]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="laqueus">
<emphasis id="8588F55BFFB9FF88DDD7AFFB273AFE3A" box="[404,517,431,455]" italics="true" pageId="10" pageNumber="1486">S. laqueus</emphasis>
</taxonomicName>
in parentheses), posterodistal corner of gnathopod 2 obtuse angle (acute angle), and dactylus of gnathopod 2 not reaching distal margin of propodus (almost reaching); and from
<taxonomicName id="70FC52CAFFB9FF88DEC3AFBA2637FDFB" baseAuthorityName="Chevreux" baseAuthorityYear="1919" box="[640,776,494,518]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="talismani">
<emphasis id="8588F55BFFB9FF88DEC3AFBA2637FDFB" box="[640,776,494,518]" italics="true" pageId="10" pageNumber="1486">S. talismani</emphasis>
</taxonomicName>
(features of
<taxonomicName id="70FC52CAFFB9FF88DFE6AFBA2112FDFB" baseAuthorityName="Chevreux" baseAuthorityYear="1919" box="[933,1069,494,518]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="talismani">
<emphasis id="8588F55BFFB9FF88DFE6AFBA2112FDFB" box="[933,1069,494,518]" italics="true" pageId="10" pageNumber="1486">S. talismani</emphasis>
</taxonomicName>
in parentheses), eyes L-shaped (reniform), lateral cephalic lobe rounded (pointed) and posteroventral corner of epimeral plate 1 rounded (pointed).
</paragraph>
<paragraph id="B7432949FFB9FF88DCF9AC1F26A0FD1E" blockId="10.[143,1104,207,739]" pageId="10" pageNumber="1486">
<taxonomicName id="70FC52CAFFB9FF88DCF9AC1F24FEFD9E" authority="Narahara &amp; Tomikawa &amp; Torigoe, 2012" authorityName="Narahara &amp; Tomikawa &amp; Torigoe" authorityYear="2012" box="[186,449,587,611]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="perexcavatus" status="sp. nov.">
<emphasis id="8588F55BFFB9FF88DCF9AC1F24FEFD9E" box="[186,449,587,611]" italics="true" pageId="10" pageNumber="1486">Stephonyx perexcavatus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="9EBB4820FFB9FF88DD84AC182725FD9E" box="[455,538,588,611]" pageId="10" pageNumber="1486" rank="species">sp. nov.</taxonomicNameLabel>
differs from
<taxonomicName id="70FC52CAFFB9FF88DEEBAC1F2602FD9E" baseAuthorityName="Chevreux" baseAuthorityYear="1908" box="[680,829,587,611]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="biscayensis">
<emphasis id="8588F55BFFB9FF88DEEBAC1F2602FD9E" box="[680,829,587,611]" italics="true" pageId="10" pageNumber="1486">S. biscayensis</emphasis>
</taxonomicName>
and
<taxonomicName id="70FC52CAFFB9FF88DF30AC1F26E0FD9E" baseAuthorityName="Barnard and Ingram" baseAuthorityYear="1990" box="[883,991,587,611]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="mytilus">
<emphasis id="8588F55BFFB9FF88DF30AC1F26E0FD9E" box="[883,991,587,611]" italics="true" pageId="10" pageNumber="1486">S. mytilus</emphasis>
</taxonomicName>
in the following features: from
<taxonomicName id="70FC52CAFFB9FF88DDC5AC3F2723FD7E" baseAuthorityName="Chevreux" baseAuthorityYear="1908" box="[390,540,619,643]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="biscayensis">
<emphasis id="8588F55BFFB9FF88DDC5AC3F2723FD7E" box="[390,540,619,643]" italics="true" pageId="10" pageNumber="1486">S. biscayensis</emphasis>
</taxonomicName>
(features of
<taxonomicName id="70FC52CAFFB9FF88DEE9AC3F267EFD7E" baseAuthorityName="Chevreux" baseAuthorityYear="1908" box="[682,833,619,643]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="biscayensis">
<emphasis id="8588F55BFFB9FF88DEE9AC3F267EFD7E" box="[682,833,619,643]" italics="true" pageId="10" pageNumber="1486">S. biscayensis</emphasis>
</taxonomicName>
in parentheses), palmar margin of gnathopod 2 deeply concave (convex), and inner ramus of uropod 3 as long as outer ramus (shorter than outer ramus); from
<taxonomicName id="70FC52CAFFB9FF88DE82ACFF260FFD3E" baseAuthorityName="Barnard and Ingram" baseAuthorityYear="1990" box="[705,816,683,707]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="mytilus">
<emphasis id="8588F55BFFB9FF88DE82ACFF260FFD3E" box="[705,816,683,707]" italics="true" pageId="10" pageNumber="1486">S. mytilus</emphasis>
</taxonomicName>
(features of
<taxonomicName id="70FC52CAFFB9FF88DF81ACFF210EFD3E" baseAuthorityName="Barnard and Ingram" baseAuthorityYear="1990" box="[962,1073,683,707]" class="Malacostraca" family="Uristidae" genus="Stephonyx" kingdom="Animalia" order="Amphipoda" pageId="10" pageNumber="1486" phylum="Arthropoda" rank="species" species="mytilus">
<emphasis id="8588F55BFFB9FF88DF81ACFF210EFD3E" box="[962,1073,683,707]" italics="true" pageId="10" pageNumber="1486">S. mytilus</emphasis>
</taxonomicName>
in parentheses), palmar margin of gnathopod 2 deeply concave (convex).
</paragraph>
</subSubSection>
</treatment>
</document>