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<document id="6E4E4828E798C2B30912063192228287" ID-CLB-Dataset="296078" ID-DOI="10.3853/j.2201-4349.75.2023.1877" ID-GBIF-Dataset="2eb8d044-aae4-4494-9d76-05b71386852a" ID-ISSN="2201-4349" ID-Zenodo-Dep="10413944" IM.bibliography_approvedBy="guilherme" IM.illustrations_approvedBy="guilherme" IM.materialsCitations_approvedBy="guilherme" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" IM.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="guilherme" checkinTime="1703108048051" checkinUser="felipe" docAuthor="Ariyama, Hiroyuki &amp; Moritaki, Takeya" docDate="2023" docId="9B0B5E464667E44BFF59C635A76FA797" docLanguage="en" docName="RecAustMus.75.4.357-370.pdf" docOrigin="Records of the Australian Museum (Rec. Aust. Mus.) 75 (4)" docSource="http://dx.doi.org/10.3853/j.2201-4349.75.2023.1877" docStyle="DocumentStyle:997BA24B490466A2F99594A367FA147F.4:RecAustMus.2019-.journal_article.0cover" docStyleId="997BA24B490466A2F99594A367FA147F" docStyleName="RecAustMus.2019-.journal_article.0cover" docStyleVersion="4" docTitle="Metopelloides lowryi Ariyama &amp; Moritaki 2023, sp. nov." docType="treatment" docVersion="5" lastPageNumber="359" masterDocId="6732263E4666E449FF87C039A200A058" masterDocTitle="Two New Amphipods Associated with a Hermit Crab from the Kumano-nada, Central Japan (Crustacea: Amphipoda: Isaeidae, Stenothoidae)" masterLastPageNumber="370" masterPageNumber="357" pageNumber="358" updateTime="1715783961989" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0">
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<mods:title id="FA96D05CCF13526EB77FDB717A9154E4">Two New Amphipods Associated with a Hermit Crab from the Kumano-nada, Central Japan (Crustacea: Amphipoda: Isaeidae, Stenothoidae)</mods:title>
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<mods:namePart id="11B05B5297FFBE17CEFA8A3313A926E8">Ariyama, Hiroyuki</mods:namePart>
<mods:affiliation id="84E4DEC3CBF423D94F859372E02246BE">Osaka Museum of Natural History, Nagai Park, Higashi-Sumiyoshi, Osaka 546 - 0034, Japan</mods:affiliation>
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<mods:namePart id="1BAD3E0A896A3CE912D6CF98C307739E">Moritaki, Takeya</mods:namePart>
<mods:affiliation id="A85182DDD46C2DA3C5C30880FCD5BF0F">Toba Aquarium, 3 - 3 - 6 Toba, Toba, Mie 517 - 8517, Japan</mods:affiliation>
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<mods:date id="F16E5BD97AF2748A9CF7625437D45A2B">2023</mods:date>
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<treatment id="9B0B5E464667E44BFF59C635A76FA797" ID-DOI="http://doi.org/10.5281/zenodo.11197678" ID-GBIF-Taxon="230324247" ID-Zenodo-Dep="11197678" LSID="urn:lsid:zoobank.org:act:EAA1BF45-028A-4079-A33C-B5CA8FC5777F" httpUri="http://treatment.plazi.org/id/9B0B5E464667E44BFF59C635A76FA797" lastPageId="2" lastPageNumber="359" pageId="1" pageNumber="358">
<subSubSection id="5BB8BCDB4667E448FF59C635A0DEA617" pageId="1" pageNumber="358" type="nomenclature">
<paragraph id="131DEF504667E448FF59C635A087A674" blockId="1.[222,647,1548,1580]" box="[222,647,1548,1580]" pageId="1" pageNumber="358">
<heading id="4855583C4667E448FF59C635A087A674" bold="true" box="[222,647,1548,1580]" centered="true" fontSize="12" level="2" pageId="1" pageNumber="358" reason="2">
<emphasis id="21D633424667E448FF59C635A087A674" bold="true" box="[222,647,1548,1580]" pageId="1" pageNumber="358">
<taxonomicName id="D4A294D34667E448FF59C635A00CA673" ID-CoL="BXQSV" authority="Ariyama &amp; Moritaki, 2023" authorityName="Ariyama &amp; Moritaki" authorityYear="2023" box="[222,524,1548,1579]" class="Malacostraca" family="Stenothoidae" genus="Metopelloides" kingdom="Animalia" order="Amphipoda" pageId="1" pageNumber="358" phylum="Arthropoda" rank="species" species="lowryi" status="sp. nov.">
<emphasis id="21D633424667E448FF59C635A00CA673" bold="true" box="[222,524,1548,1579]" italics="true" pageId="1" pageNumber="358">Metopelloides lowryi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="3AE58E394667E448FD91C634A087A674" box="[534,647,1549,1580]" pageId="1" pageNumber="358" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
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urn:lsid:zoobank.org:act:
<uuid id="6704D5854667E448FEC8C604A0DEA617" box="[335,734,1597,1615]" pageId="1" pageNumber="358">EAA1BF45-028A-4079-A33C-B5CA8FC5777F</uuid>
</uri>
</paragraph>
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<subSubSection id="5BB8BCDB4667E448FF42C65FA3E6A6EC" pageId="1" pageNumber="358" type="description">
<paragraph id="131DEF504667E448FF42C65FA0A0A625" blockId="1.[197,672,1638,1662]" box="[197,672,1638,1662]" pageId="1" pageNumber="358">[Japanese name: Yadokari-tatesokoebi, new]</paragraph>
<paragraph id="131DEF504667E448FEF8C6A0A3E6A6EC" blockId="1.[383,486,1689,1716]" box="[383,486,1689,1716]" pageId="1" pageNumber="358">
<figureCitation id="8B99F3D54667E448FEF8C6A0A3E6A6EC" box="[383,486,1689,1716]" captionStart-0="Figure 1" captionStart-1="Figure 2" captionStart-2="Figure 3" captionStart-3="Figure 4" captionStart-4="Figure 5" captionStartId-0="2.[166,234,1069,1091]" captionStartId-1="3.[121,189,1896,1918]" captionStartId-2="4.[166,234,1896,1918]" captionStartId-3="5.[121,189,1455,1477]" captionStartId-4="6.[166,233,905,927]" captionTargetBox-1="[163,1386,189,1853]" captionTargetBox-2="[199,1437,184,1863]" captionTargetBox-3="[162,1372,149,1436]" captionTargetBox-4="[167,1467,151,891]" captionTargetId-0="figure-7@2.[166,1466,151,1070]" captionTargetId-1="figure-10@3.[121,1421,151,1882]" captionTargetId-2="figure-7@4.[166,1466,151,1882]" captionTargetId-3="figure-10@5.[121,1421,137,1463]" captionTargetId-4="figure-6@6.[167,1467,151,891]" captionTargetPageId-0="2" captionTargetPageId-1="3" captionTargetPageId-2="4" captionTargetPageId-3="5" captionTargetPageId-4="6" captionText-0="Figure 1. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498, habitus." captionText-1="Figure 2. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498. Scale bars = 0.04 mm." captionText-2="Figure 3. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498. Scale bars = 0.1 mm." captionText-3="Figure 4. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498. Scale bars = 0.1 mm." captionText-4="Figure 5. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498, photographed immediately after fixation, T.Moritaki." figureDoi-0="http://doi.org/10.5281/zenodo.11198970" figureDoi-1="http://doi.org/10.5281/zenodo.10413946" figureDoi-2="http://doi.org/10.5281/zenodo.10413948" figureDoi-3="http://doi.org/10.5281/zenodo.10413950" figureDoi-4="http://doi.org/10.5281/zenodo.10413952" httpUri-0="https://zenodo.org/record/11198970/files/figure.png" httpUri-1="https://zenodo.org/record/10413946/files/figure.png" httpUri-2="https://zenodo.org/record/10413948/files/figure.png" httpUri-3="https://zenodo.org/record/10413950/files/figure.png" httpUri-4="https://zenodo.org/record/10413952/files/figure.png" pageId="1" pageNumber="358">Figs 15</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="5BB8BCDB4667E448FFFEC6F1A339A7F8" pageId="1" pageNumber="358" type="materials_examined">
<paragraph id="131DEF504667E448FFFEC6F1A3EFA70D" blockId="1.[121,749,1736,1878]" pageId="1" pageNumber="358">
<materialsCitation id="A3CAE50D4667E448FFFEC6F1A3EFA70D" ID-GBIF-Occurrence="4857292303" collectingDate="2016-10-13" collectorName="T. Moritaki" elevation="270" latitude="34.022778" location="Mie Prefecture" longLatPrecision="1" longitude="136.34933" pageId="1" pageNumber="358" specimenCode="OMNH-Ar-12498" specimenCount="1" specimenCount-male="1" stateProvince="Mie Prefecture" typeStatus="holotype">
<emphasis id="21D633424667E448FFFEC6F1A2E2A6B8" bold="true" box="[121,226,1736,1760]" pageId="1" pageNumber="358">
<typeStatus id="CC1951F24667E448FFFEC6F1A2E2A6B8" box="[121,226,1736,1760]" pageId="1" pageNumber="358" type="holotype">Holotype</typeStatus>
</emphasis>
:
<specimenCode id="4304472B4667E448FF73C6F1A3B9A6B8" box="[244,441,1736,1760]" pageId="1" pageNumber="358">OMNH-Ar-12498</specimenCode>
(TAMBL-CR 1775),
<specimenCount id="05A424D94667E448FD36C6F1A0E8A6B8" box="[689,744,1736,1760]" pageId="1" pageNumber="358" type="male">male</specimenCount>
,
<quantity id="D45A42B54667E448FFFEC6DFA2D1A6A5" box="[121,209,1766,1790]" metricMagnitude="-3" metricUnit="m" metricValue="4.3" pageId="1" pageNumber="358" unit="mm" value="4.3">4.3 mm</quantity>
, Kumano-nada, off Owase City,
<collectingRegion id="D16621B24667E448FDC5C6DFA0E9A6A6" box="[578,745,1766,1790]" country="Japan" name="Mie" pageId="1" pageNumber="358">Mie Prefecture</collectingRegion>
,
<geoCoordinate id="769689974667E448FFFEC73AA30BA743" box="[121,267,1795,1819]" degrees="34" direction="north" minutes="01" orientation="latitude" pageId="1" pageNumber="358" precision="1" seconds="22.0" value="34.022778">34°01'22.0&quot;N</geoCoordinate>
<geoCoordinate id="769689974667E448FE96C73AA3AFA743" box="[273,431,1795,1819]" degrees="136" direction="east" minutes="20" orientation="longitude" pageId="1" pageNumber="358" precision="1" seconds="57.6" value="136.34933">136°20'57.6&quot;E</geoCoordinate>
,
<quantity id="D45A42B54667E448FE3EC73AA031A742" box="[441,561,1795,1819]" metricMagnitude="2" metricUnit="m" metricValue="2.7" metricValueMax="3.5" metricValueMin="1.9" pageId="1" pageNumber="358" unit="m" value="270.0" valueMax="350.0" valueMin="190.0">
<elevation id="988F08634667E448FE3EC73AA031A742" box="[441,561,1795,1819]" metricMagnitude="2" metricUnit="m" metricValue="2.7" metricValueMax="3.5" metricValueMin="1.9" pageId="1" pageNumber="358" unit="m" value="270.0" valueMax="350.0" valueMin="190.0">190350 m</elevation>
</quantity>
depth, associated with
<taxonomicName id="D4A294D34667E448FF28C718A064A760" authority="(Ortmann, 1892)" baseAuthorityName="Ortmann" baseAuthorityYear="1892" box="[175,612,1824,1848]" class="Malacostraca" family="Paguridae" genus="Propagurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="358" phylum="Arthropoda" rank="species" species="obtusifrons">
<emphasis id="21D633424667E448FF28C718A3AAA760" box="[175,426,1824,1848]" italics="true" pageId="1" pageNumber="358">Propagurus obtusifrons</emphasis>
(Ortmann, 1892)
</taxonomicName>
(
<taxonomicName id="D4A294D34667E448FDF6C719A0E1A760" box="[625,737,1824,1848]" class="Malacostraca" family="Paguridae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="1" pageNumber="358" phylum="Arthropoda" rank="family">Paguridae</taxonomicName>
), coll.
<collectorName id="BE578A864667E448FF29C707A329A70E" box="[174,297,1854,1878]" pageId="1" pageNumber="358">T. Moritaki</collectorName>
,
<date id="671CC9904667E448FEB3C707A3EBA70D" box="[308,491,1853,1878]" pageId="1" pageNumber="358" value="2016-10-13">
<collectingDate id="775830784667E448FEB3C707A3EBA70D" box="[308,491,1853,1878]" pageId="1" pageNumber="358" value="2016-10-13">13 October 2016</collectingDate>
</date>
.
</materialsCitation>
</paragraph>
<paragraph id="131DEF504667E448FFFEC752A339A7F8" blockId="1.[121,747,1899,1952]" pageId="1" pageNumber="358">
<emphasis id="21D633424667E448FFFEC752A318A7DB" bold="true" box="[121,280,1899,1923]" pageId="1" pageNumber="358">Type locality</emphasis>
. Kumano-nada, off Owase City in
<collectingRegion id="D16621B24667E448FD38C752A2EAA7F8" country="Japan" name="Mie" pageId="1" pageNumber="358">Mie Prefecture</collectingRegion>
,
<collectingCountry id="6BB5AFC04667E448FF72C7B0A335A7F8" box="[245,309,1929,1952]" name="Japan" pageId="1" pageNumber="358">Japan</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="5BB8BCDB4667E448FFFEC78FA18AA095" pageId="1" pageNumber="358" type="etymology">
<paragraph id="131DEF504667E448FFFEC78FA18AA095" blockId="1.[121,748,1974,1998]" lastBlockId="1.[794,1421,151,205]" pageId="1" pageNumber="358">
<emphasis id="21D633424667E448FFFEC78FA2F4A796" bold="true" box="[121,244,1974,1998]" pageId="1" pageNumber="358">Etymology</emphasis>
. The species name is dedicated to the late Dr James K. Lowry for his great contribution to amphipod taxonomy.
</paragraph>
</subSubSection>
<subSubSection id="5BB8BCDB4667E448FC9DC0DBA78EA10A" pageId="1" pageNumber="358" type="diagnosis">
<paragraph id="131DEF504667E448FC9DC0DBA78EA10A" blockId="1.[794,1422,226,338]" pageId="1" pageNumber="358">
<emphasis id="21D633424667E448FC9DC0DBA188A0A2" bold="true" box="[794,904,226,250]" pageId="1" pageNumber="358">Diagnosis</emphasis>
. Antenna 1 short, peduncular article 2 0.3 times length of article 1. Gnathopod 1 small, posterior margin of dactylus bare. Gnathopod 2 stout, anterior margin of basis with several setae, palm oblique.
<taxonomicName id="D4A294D34667E448FBEAC103A6B3A10A" authorityName="Pearse" authorityYear="1952" box="[1133,1203,314,338]" class="Copepoda" family="Telsidae" genus="Telson" kingdom="Animalia" order="Cyclopoida" pageId="1" pageNumber="367" phylum="Arthropoda" rank="genus">Telson</taxonomicName>
without robust setae.
</paragraph>
</subSubSection>
<subSubSection id="5BB8BCDB4667E44BFC9DC15EA1EFA61C" lastPageId="2" lastPageNumber="359" pageId="1" pageNumber="358" type="description">
<paragraph id="131DEF504667E448FC9DC15EA1D7A180" blockId="1.[793,1422,359,1997]" pageId="1" pageNumber="358">
<emphasis id="21D633424667E448FC9DC15EA19EA127" bold="true" box="[794,926,359,383]" pageId="1" pageNumber="358">Description</emphasis>
(based on
<typeStatus id="CC1951F24667E448FB8AC15EA66DA127" box="[1037,1133,359,383]" pageId="1" pageNumber="358" type="holotype">holotype</typeStatus>
, male,
<quantity id="D45A42B54667E448FB31C151A70BA1D8" box="[1206,1291,360,384]" metricMagnitude="-3" metricUnit="m" metricValue="4.3" pageId="1" pageNumber="358" unit="mm" value="4.3">4.3 mm</quantity>
). Body (
<figureCitation id="8B99F3D54667E448FAE5C15EA126A1C5" captionStart="Figure 1" captionStartId="2.[166,234,1069,1091]" captionTargetId="figure-7@2.[166,1466,151,1070]" captionTargetPageId="2" captionText="Figure 1. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498, habitus." figureDoi="http://doi.org/10.5281/zenodo.11198970" httpUri="https://zenodo.org/record/11198970/files/figure.png" pageId="1" pageNumber="358">Fig. 1</figureCitation>
) oval.
<emphasis id="21D633424667E448FCF6C1BCA1A9A1C4" box="[881,937,389,412]" italics="true" pageId="1" pageNumber="358">Coxa</emphasis>
1 small, perfectly hidden by coxa 2; coxae 2, 3 large, coxa 4 extremely large; coxae 57 small, perfectly hidden by coxa 4.
</paragraph>
<paragraph id="131DEF504667E448FCBFC1E4A637A51F" blockId="1.[793,1422,359,1997]" pageId="1" pageNumber="358">
Head (
<figureCitation id="8B99F3D54667E448FCF8C1E4A1C2A1AD" box="[895,962,477,501]" captionStart="Figure 1" captionStartId="2.[166,234,1069,1091]" captionTargetId="figure-7@2.[166,1466,151,1070]" captionTargetPageId="2" captionText="Figure 1. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498, habitus." figureDoi="http://doi.org/10.5281/zenodo.11198970" httpUri="https://zenodo.org/record/11198970/files/figure.png" pageId="1" pageNumber="358">Figs 1</figureCitation>
,
<figureCitation id="8B99F3D54667E448FC57C1E4A1E0A1AD" box="[976,992,477,501]" captionStart="Figure 2" captionStartId="3.[121,189,1896,1918]" captionTargetBox="[163,1386,189,1853]" captionTargetId="figure-10@3.[121,1421,151,1882]" captionTargetPageId="3" captionText="Figure 2. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498. Scale bars = 0.04 mm." figureDoi="http://doi.org/10.5281/zenodo.10413946" httpUri="https://zenodo.org/record/10413946/files/figure.png" pageId="1" pageNumber="358">2</figureCitation>
).
<emphasis id="21D633424667E448FC73C1E7A64EA1AD" box="[1012,1102,478,501]" italics="true" pageId="1" pageNumber="358">Rostrum</emphasis>
small.
<emphasis id="21D633424667E448FB1AC1E4A728A1AD" box="[1181,1320,477,501]" italics="true" pageId="1" pageNumber="358">Ocular lobes</emphasis>
rounded.
<emphasis id="21D633424667E448FC9DC1C2A14CA24A" box="[794,844,507,530]" italics="true" pageId="1" pageNumber="358">Eyes</emphasis>
large (diameter:
<emphasis id="21D633424667E448FB8EC1C2A629A24A" box="[1033,1065,507,530]" italics="true" pageId="1" pageNumber="358">ca.</emphasis>
0.4 times head length).
<emphasis id="21D633424667E448FAB3C1C2A127A268" italics="true" pageId="1" pageNumber="358">Antenna 1</emphasis>
short,
<emphasis id="21D633424667E448FCFFC221A198A277" box="[888,920,536,559]" italics="true" pageId="1" pageNumber="358">ca.</emphasis>
0.25 times BL; peduncular articles 13 with length ratio of 1.0:0.3:0.25, article 1 stout, lacking setae; accessory flagellum vestigial, with 3 minute setae on tip; primary flagellum with 6 articles, article 2 short, articles 35 each bearing aesthetasc posterodistally.
<emphasis id="21D633424667E448FB48C2B4A73FA2FD" box="[1231,1343,653,677]" italics="true" pageId="1" pageNumber="358">Antenna 2</emphasis>
longer than antenna 1 (
<emphasis id="21D633424667E448FC48C292A1F0A29A" box="[975,1008,683,706]" italics="true" pageId="1" pageNumber="358">ca.</emphasis>
1.55 times), slender, sparsely setose; peduncular articles 35 with length ratio of 1.0:2.0:1.7, anteromedial surfaces with 4, 4, 2 robust setae, respectively; flagellum with 13 articles, terminal article narrow.
<emphasis id="21D633424667E448FACEC33AA137A36F" italics="true" pageId="1" pageNumber="358">Upper lip</emphasis>
asymmetrical, ventral margin hollowed.
<emphasis id="21D633424667E448FA95C326A786A36F" box="[1298,1414,799,823]" italics="true" pageId="1" pageNumber="358">Mandibles</emphasis>
, incisors wide, with 910 distal denticles; laciniae mobilis broad, left one fan-shaped, with 11 denticles, right one rectangular, composed of 4 quadrate blades; accessory blades
<quantity id="D45A42B54667E448FCE0C3ACA192A3F5" box="[871,914,917,941]" metricMagnitude="-1" metricUnit="m" metricValue="2.286" pageId="1" pageNumber="358" unit="in" value="9.0">9 in</quantity>
left,
<quantity id="D45A42B54667E448FC49C3ACA605A3F5" box="[974,1029,917,941]" metricMagnitude="-1" metricUnit="m" metricValue="2.794" pageId="1" pageNumber="358" unit="in" value="11.0">11 in</quantity>
right; palpi relatively short, slender (length
<emphasis id="21D633424667E448FCEAC38AA18DA392" box="[877,909,947,970]" italics="true" pageId="1" pageNumber="358">ca.</emphasis>
4.7 times width), with 3 setae.
<emphasis id="21D633424667E448FB66C38AA748A392" box="[1249,1352,946,970]" italics="true" pageId="1" pageNumber="358">Lower lip</emphasis>
, outer plate with mandibular lobe, mediodistal corner with 3 short setae.
<emphasis id="21D633424667E448FCDAC3D4A1C3A45D" box="[861,963,1005,1029]" italics="true" pageId="1" pageNumber="358">Maxilla 1</emphasis>
with small inner plate bearing single short seta; outer plate with 7 robust setae apically, medial margin bearing several feeble setae; tip of palp acutely projected, with long robust seta, medial margin lined with 5 robust setae.
<emphasis id="21D633424667E448FCDDC45BA1BEA422" box="[858,958,1122,1146]" italics="true" pageId="1" pageNumber="358">Maxilla 2</emphasis>
, inner plate triangular, tip with several setae; outer plate longer, rounded and setose distally.
<emphasis id="21D633424667E448FA9DC446A78EA4CF" box="[1306,1422,1151,1175]" italics="true" pageId="1" pageNumber="358">Maxilliped</emphasis>
enlarged; distal margins of inner plates each bearing 3 short setae; distomedial lobe of outer plate short and narrow, tip with short robust seta, lateral margin bearing many feeble setae; palp stout, articles 13 wide, medial margins each with several robust setae, article 4 falcate, medial margin bearing many feeble setae.
</paragraph>
<paragraph id="131DEF504667E44BFCBFC574A3B9A6BC" blockId="1.[793,1422,359,1997]" lastBlockId="2.[166,794,1153,1999]" lastPageId="2" lastPageNumber="359" pageId="1" pageNumber="358">
Pereon (
<figureCitation id="8B99F3D54667E448FC1EC574A1E2A53D" box="[921,994,1357,1381]" captionStart="Figure 3" captionStartId="4.[166,234,1896,1918]" captionTargetBox="[199,1437,184,1863]" captionTargetId="figure-7@4.[166,1466,151,1882]" captionTargetPageId="4" captionText="Figure 3. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498. Scale bars = 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.10413948" httpUri="https://zenodo.org/record/10413948/files/figure.png" pageId="1" pageNumber="358">Fig. 3</figureCitation>
).
<emphasis id="21D633424667E448FC7BC574A692A53D" box="[1020,1170,1357,1381]" italics="true" pageId="1" pageNumber="358">Gnathopod 1</emphasis>
small; basis straight, anterior margin and posterodistal corner with 3 and 1 setae, respectively; merus setose distally; carpus moderately elongate, anterodistal corner and posterior margin setose; propodus subequal to carpus in length, palm strongly oblique, defined by 2 lateral and 2 medial robust setae; dactylus almost straight.
<emphasis id="21D633424667E448FBA2C5C4A6B1A64D" box="[1061,1201,1533,1557]" italics="true" pageId="1" pageNumber="358">Gnathopod 2</emphasis>
stout; basis straight, anterior margin lined with several evenly-spaced setae, posterodistal corner setose; ischium, posterodistal corner setose; merus rounded distally, posterior margin with several setae; carpus with posterior lobe setose distally; propodus broad,
<emphasis id="21D633424667E448FCE2C6A9A186A6FF" box="[869,902,1680,1703]" italics="true" pageId="1" pageNumber="358">ca.</emphasis>
2.65 times length of carpus, anterodistal corner setose, palm oblique, defined by acute projection, distal half of palm convex and serrated, with several robust setae, proximal half concave; dactylus slightly curved posteriorly.
<emphasis id="21D633424667E448FC9DC73CA194A745" box="[794,916,1797,1821]" italics="true" pageId="1" pageNumber="358">Pereopod 3</emphasis>
slender, longer than gnathopod 2; basiscarpus sparsely setose; propodus
<emphasis id="21D633424667E448FBB1C71AA656A762" box="[1078,1110,1827,1850]" italics="true" pageId="1" pageNumber="358">ca.</emphasis>
1.45 times length of carpus, slightly widened distally, distal and posterior margins with 2+3+3+3 and 2+2+1+1 robust setae, respectively; dactylus narrow.
<emphasis id="21D633424667E448FCEAC743A1E4A7CA" box="[877,996,1914,1938]" italics="true" pageId="1" pageNumber="358">Pereopod 4</emphasis>
slender, similar to pereopod 3; propodus, distal and posterior margins with 2+3+3+3 and 3+2+1 robust setae, respectively.
<emphasis id="21D633424667E448FC74C78CA671A794" box="[1011,1137,1973,1997]" italics="true" pageId="1" pageNumber="358">Pereopod 5</emphasis>
shorter than pereopod 4; basis straight, anterior margin lined with several robust setae; merus, anterior and posterior margins and carpus, anterior margin each with several robust setae; propodus slightly widened distally, distal and anterior margins with 2+3+3 and 3+3+1 robust setae, respectively.
<emphasis id="21D633424664E44BFD1CC4CEA119A557" box="[667,793,1271,1295]" italics="true" pageId="2" pageNumber="359">Pereopod 6</emphasis>
slightly shorter than pereopod 5; basis straight, posterodistal corner slightly swollen, anterior margin lined with several robust setae; merus, anterior and posterior margins each with several robust setae; carpus, anterior margin and posterodistal corner bearing several and a few robust setae, respectively; propodus slightly widened distally, distal and anterior margins with 2+3+3 and 3+3+1+1 robust setae, respectively.
<emphasis id="21D633424664E44BFEB4C5D8A3ADA5A1" box="[307,429,1505,1529]" italics="true" pageId="2" pageNumber="359">Pereopod 7</emphasis>
subequal to pereopod
<quantity id="D45A42B54664E44BFD27C5D8A0C9A5A1" box="[672,713,1505,1529]" metricMagnitude="-1" metricUnit="m" metricValue="1.524" pageId="2" pageNumber="359" unit="in" value="6.0">6 in</quantity>
length; basis straight, wider than that of pereopod 6, posterodistal corner weakly swollen, anterior margin lined with several robust setae; merus, anterodistal corner and posterior margin with a few and several robust setae, respectively; carpus, anterior margin and posterodistal corner bearing several and a few robust setae, respectively; propodus slightly widened distally, distal and anterior margins with 2+3+3 and 3+3+2 robust setae, respectively.
</paragraph>
<caption id="47DDBFD84664E44BFF21C414A620A41C" ID-DOI="http://doi.org/10.5281/zenodo.11198970" ID-Zenodo-Dep="11198970" box="[166,1056,1069,1092]" httpUri="https://zenodo.org/record/11198970/files/figure.png" pageId="2" pageNumber="359" startId="2.[166,234,1069,1091]" targetBox="[370,1259,189,1047]" targetPageId="2" targetType="figure">
<paragraph id="131DEF504664E44BFF21C414A620A41C" blockId="2.[166,1056,1069,1092]" box="[166,1056,1069,1092]" pageId="2" pageNumber="359">
<emphasis id="21D633424664E44BFF21C414A2FCA41A" bold="true" box="[166,252,1069,1091]" pageId="2" pageNumber="359">Figure 1</emphasis>
.
<taxonomicName id="D4A294D34664E44BFE8FC417A3D3A41B" authority="Ariyama &amp; Moritaki, 2023" authorityName="Ariyama &amp; Moritaki" authorityYear="2023" box="[264,467,1070,1091]" class="Malacostraca" family="Stenothoidae" genus="Metopelloides" kingdom="Animalia" order="Amphipoda" pageId="2" pageNumber="359" phylum="Arthropoda" rank="species" species="lowryi" status="sp. nov.">
<emphasis id="21D633424664E44BFE8FC417A3D3A41B" box="[264,467,1070,1091]" italics="true" pageId="2" pageNumber="359">Metopelloides lowryi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="3AE58E394664E44BFE5EC417A026A41B" box="[473,550,1070,1091]" pageId="2" pageNumber="359" rank="species">sp. nov.</taxonomicNameLabel>
, holotype male, 4.3 mm, OMNH-Ar-12498, habitus.
</paragraph>
</caption>
<paragraph id="131DEF504664E44BFF42C6D0A72DA5F9" blockId="2.[166,794,1153,1999]" lastBlockId="2.[839,1467,1153,1441]" pageId="2" pageNumber="359">
Pleon (
<figureCitation id="8B99F3D54664E44BFE89C6D0A34EA759" box="[270,334,1769,1793]" captionStart="Figure 4" captionStartId="5.[121,189,1455,1477]" captionTargetBox="[162,1372,149,1436]" captionTargetId="figure-10@5.[121,1421,137,1463]" captionTargetPageId="5" captionText="Figure 4. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498. Scale bars = 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.10413950" httpUri="https://zenodo.org/record/10413950/files/figure.png" pageId="2" pageNumber="359">Fig. 4</figureCitation>
).
<emphasis id="21D633424664E44BFED8C6D0A034A759" box="[351,564,1769,1793]" italics="true" pageId="2" pageNumber="359">Epimeral plates 13</emphasis>
, posterodistal corners strongly, moderately, and weakly produced, respectively; ventral margins bare.
<emphasis id="21D633424664E44BFE0AC71DA3F0A764" box="[397,496,1828,1852]" italics="true" pageId="2" pageNumber="359">Pleopods</emphasis>
slender, pleopod 3 shortest; pleopods 13, peduncles with 7, 10, 1 simple setae, respectively, outer rami longer than inner rami, former with 12, 11, 10 and latter with 8, 8, 7 articles, respectively.
<emphasis id="21D633424664E44BFD4EC745A2B3A7E9" italics="true" pageId="2" pageNumber="359">Uropod 1</emphasis>
long; peduncle with 9 dorsolateral and 4 dorsomedial robust setae; rami shorter than peduncle, outer ramus shorter than inner ramus, with 3 dorsal robust setae, inner ramus bearing 2 dorsal robust setae.
<emphasis id="21D633424664E44BFBBAC4A6A6D1A4EE" box="[1085,1233,1183,1207]" italics="true" pageId="2" pageNumber="359">Uropod 2 ca.</emphasis>
0.75 times length of uropod 1, peduncle with 5 dorsolateral and 1 dorsomedial robust setae; outer ramus
<emphasis id="21D633424664E44BFBD2C4E3A676A4A9" box="[1109,1142,1242,1265]" italics="true" pageId="2" pageNumber="359">ca.</emphasis>
0.85 times length of peduncle, with 2 dorsal robust setae; inner ramus subequal to peduncle in length, bearing 2 dorsal robust setae.
<emphasis id="21D633424664E44BFB71C52DA785A574" box="[1270,1413,1300,1324]" italics="true" pageId="2" pageNumber="359">Uropod 3 ca.</emphasis>
0.65 times length of uropod 2, peduncle with 2 dorsodistal robust setae; single ramus 2-articulate, article 1 with 2 dorsodistal robust setae, article 2 slightly longer than article 1, tip acute.
<emphasis id="21D633424664E44BFCC0C5B0A1B3A5F9" box="[839,947,1417,1441]" italics="true" pageId="2" pageNumber="359">
<taxonomicName id="D4A294D34664E44BFCC0C5B0A18CA5F9" authorityName="Pearse" authorityYear="1952" box="[839,908,1417,1441]" class="Copepoda" family="Telsidae" genus="Telson" kingdom="Animalia" order="Cyclopoida" pageId="2" pageNumber="359" phylum="Arthropoda" rank="genus">Telson</taxonomicName>
ca.
</emphasis>
2.05 times longer than broad, bare.
</paragraph>
<paragraph id="131DEF504664E44BFCC0C58FA1EFA61C" blockId="2.[839,1467,1462,1604]" pageId="2" pageNumber="359">
<emphasis id="21D633424664E44BFCC0C58FA1DBA596" bold="true" box="[839,987,1462,1486]" pageId="2" pageNumber="359">Colour in life</emphasis>
(
<figureCitation id="8B99F3D54664E44BFC60C58EA627A596" box="[999,1063,1462,1487]" captionStart="Figure 5" captionStartId="6.[166,233,905,927]" captionTargetBox="[167,1467,151,891]" captionTargetId="figure-6@6.[167,1467,151,891]" captionTargetPageId="6" captionText="Figure 5. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498, photographed immediately after fixation, T.Moritaki." figureDoi="http://doi.org/10.5281/zenodo.10413952" httpUri="https://zenodo.org/record/10413952/files/figure.png" pageId="2" pageNumber="359">Fig. 5</figureCitation>
). Eyes light red. Body white with light orange bands on pereonites 13, 4, 67, coxae 24 (anterior part) and coxa 4 (posterior part). This coloration resembles that of the hermit crab (see
<figureCitation id="8B99F3D54664E44BFBF6C636A6BCA67F" box="[1137,1212,1551,1575]" captionStart="Figure 11" captionStartId="12.[166,234,1135,1157]" captionTargetBox="[166,1466,151,1121]" captionTargetId="figure-24@12.[166,1466,151,1121]" captionTargetPageId="12" captionText="Figure 11. Isaea concinnoides sp. nov., paratype male, ca. 5.6 mm, OMNH-Ar-12500, photographed in aquarium, T. Moritaki." figureDoi="http://doi.org/10.5281/zenodo.10413974" httpUri="https://zenodo.org/record/10413974/files/figure.png" pageId="2" pageNumber="359">Fig. 11</figureCitation>
) and is probably useful for camouflage.
</paragraph>
</subSubSection>
<subSubSection id="5BB8BCDB4664E44BFCC0C66DA6F4A7F9" pageId="2" pageNumber="359" type="discussion">
<paragraph id="131DEF504664E44BFCC0C66DA610A70F" blockId="2.[839,1467,1620,1879]" pageId="2" pageNumber="359">
<emphasis id="21D633424664E44BFCC0C66DA1AFA634" bold="true" box="[839,943,1620,1644]" pageId="2" pageNumber="359">Remarks</emphasis>
.
<taxonomicName id="D4A294D34664E44BFC47C66DA6A6A634" authority="Ariyama &amp; Moritaki, 2023" authorityName="Ariyama &amp; Moritaki" authorityYear="2023" box="[960,1190,1620,1644]" class="Malacostraca" family="Stenothoidae" genus="Metopelloides" kingdom="Animalia" order="Amphipoda" pageId="2" pageNumber="359" phylum="Arthropoda" rank="species" species="lowryi" status="sp. nov.">
<emphasis id="21D633424664E44BFC47C66DA6A6A634" box="[960,1190,1620,1644]" italics="true" pageId="2" pageNumber="359">Metopelloides lowryi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="3AE58E394664E44BFB37C66DA707A633" box="[1200,1287,1620,1643]" pageId="2" pageNumber="359" rank="species">sp. nov.</taxonomicNameLabel>
is characterized by: (1) a short article 2 of antenna 1 (0.3 times length of article 1); (2) a slender mandibular palp with 3 setae (length
<emphasis id="21D633424664E44BFC1AC694A1BDA69C" box="[925,957,1709,1732]" italics="true" pageId="2" pageNumber="359">ca.</emphasis>
4.7 times width); and (3) an oblique palm of gnathopod 2. No other congeners have this combination of characters. Although
<taxonomicName id="D4A294D34664E44BFBA9C6DEA698A6A7" authorityName="Ariyama &amp; Moritaki" authorityYear="2023" box="[1070,1176,1767,1791]" class="Malacostraca" family="Stenothoidae" genus="Metopelloides" kingdom="Animalia" order="Amphipoda" pageId="2" pageNumber="359" phylum="Arthropoda" rank="species" species="lowryi">
<emphasis id="21D633424664E44BFBA9C6DEA698A6A7" box="[1070,1176,1767,1791]" italics="true" pageId="2" pageNumber="359">M. lowryi</emphasis>
</taxonomicName>
has a similar gnathopod 2 to
<taxonomicName id="D4A294D34664E44BFCE5C73CA600A744" baseAuthorityName="Shoemaker" baseAuthorityYear="1930" box="[866,1024,1796,1820]" class="Malacostraca" family="Stenothoidae" genus="Metopella" kingdom="Animalia" order="Amphipoda" pageId="2" pageNumber="359" phylum="Arthropoda" rank="species" species="micropalpa">
<emphasis id="21D633424664E44BFCE5C73CA600A744" box="[866,1024,1796,1820]" italics="true" pageId="2" pageNumber="359">M. micropalpa</emphasis>
</taxonomicName>
, this new species can be distinguished by the short article 2 of antenna 1 (0.6 times length of article
<quantity id="D45A42B54664E44BFA2AC718A15CA70F" metricMagnitude="-2" metricUnit="m" metricValue="2.54" pageId="2" pageNumber="359" unit="in" value="1.0">1 in</quantity>
<taxonomicName id="D4A294D34664E44BFCE5C706A600A70F" baseAuthorityName="Shoemaker" baseAuthorityYear="1930" box="[866,1024,1855,1879]" class="Malacostraca" family="Stenothoidae" genus="Metopella" kingdom="Animalia" order="Amphipoda" pageId="2" pageNumber="359" phylum="Arthropoda" rank="species" species="micropalpa">
<emphasis id="21D633424664E44BFCE5C706A600A70F" box="[866,1024,1855,1879]" italics="true" pageId="2" pageNumber="359">M. micropalpa</emphasis>
</taxonomicName>
).
</paragraph>
<paragraph id="131DEF504664E44BFCC0C755A6F4A7F9" blockId="2.[839,1466,1900,1953]" pageId="2" pageNumber="359">
<emphasis id="21D633424664E44BFCC0C755A1A0A7DC" bold="true" box="[839,928,1900,1924]" pageId="2" pageNumber="359">Habitat</emphasis>
. Bottom sediment unknown,
<quantity id="D45A42B54664E44BFB68C755A76DA7DB" box="[1263,1389,1900,1924]" metricMagnitude="2" metricUnit="m" metricValue="2.7" metricValueMax="3.5" metricValueMin="1.9" pageId="2" pageNumber="359" unit="m" value="270.0" valueMax="350.0" valueMin="190.0">190350 m</quantity>
depth, associated with
<taxonomicName id="D4A294D34664E44BFC76C7B3A6EDA7F9" baseAuthorityName="Ortmann" baseAuthorityYear="1892" box="[1009,1261,1929,1953]" class="Malacostraca" family="Paguridae" genus="Propagurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Decapoda" pageId="2" pageNumber="359" phylum="Arthropoda" rank="species" species="obtusifrons">
<emphasis id="21D633424664E44BFC76C7B3A6EDA7F9" box="[1009,1261,1929,1953]" italics="true" pageId="2" pageNumber="359">Propagurus obtusifrons</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection id="5BB8BCDB4664E44BFCC0C78FA76FA797" box="[839,1391,1974,1999]" pageId="2" pageNumber="359" type="distribution">
<paragraph id="131DEF504664E44BFCC0C78FA76FA797" blockId="2.[839,1391,1974,1999]" box="[839,1391,1974,1999]" pageId="2" pageNumber="359">
<emphasis id="21D633424664E44BFCC0C78FA1D2A796" bold="true" box="[839,978,1974,1998]" pageId="2" pageNumber="359">Distribution</emphasis>
.
<collectingCountry id="6BB5AFC04664E44BFC67C78EA621A796" box="[992,1057,1975,1998]" name="Japan" pageId="2" pageNumber="359">Japan</collectingCountry>
: Kumano-nada (present study).
</paragraph>
</subSubSection>
</treatment>
</document>