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<document id="25A13565B23B125416C70C8E730AECC4" ID-DOI="10.5281/zenodo.4619337" ID-ISSN="2345-7600" ID-Zenodo-Dep="4619337" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1616095088349" checkinUser="carolina" docAuthor="Ng, Peter K. L. &amp; Ho, P. - H." docDate="2003" docId="D60B03372D28FF04FC6CCE6AFD52DCB3" docLanguage="en" docName="RafflesBZool.51.1.71-85.pdf" docOrigin="Raffles Bulletin of Zoology 51 (1)" docStyle="DocumentStyle:19380AF0FBA5B2F218DD253A34ABE57F.5:RafflesBZool.2003-2005.journal_article" docStyleId="19380AF0FBA5B2F218DD253A34ABE57F" docStyleName="RafflesBZool.2003-2005.journal_article" docStyleVersion="5" docTitle="Ethusina chenae Ng &amp; Ho 2003, new species" docType="treatment" docVersion="3" lastPageNumber="76" masterDocId="2A327B4F2D2CFF02FFB9CD70FFA2DF4B" masterDocTitle="On The Deep-Water Dorippid Crabs Of The Genus Ethusina Smith, 1884 (Crustacea: Decapoda: Brachyura) From Taiwan" masterLastPageNumber="85" masterPageNumber="71" pageNumber="75" updateTime="1698890879348" updateUser="plazi" zenodo-license-document="CC-BY-4.0">
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<mods:title id="638E6F090EB11E2D2DD8E6D5D4530EA3">On The Deep-Water Dorippid Crabs Of The Genus Ethusina Smith, 1884 (Crustacea: Decapoda: Brachyura) From Taiwan</mods:title>
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<mods:namePart id="E756B35711EB03C13AA2177C7EC17C5C">Ng, Peter K. L.</mods:namePart>
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<mods:namePart id="34CA6873A1AA356895B548ADE2F08946">Ho, P. - H.</mods:namePart>
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<mods:date id="13A5419547DA58234B79B7A43877BB49">2003</mods:date>
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<mods:number id="95A1916DA7AFCCEAEBFB4B98C110F833">51</mods:number>
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<mods:identifier id="FB8C3B5EF005E3D5AD3A583797A395E5" type="ISSN">2345-7600</mods:identifier>
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<subSubSection id="16B8E1AA2D28FF06FC6CCE6AFA92DC7A" box="[981,1328,793,818]" pageId="4" pageNumber="75" type="nomenclature">
<paragraph id="5E1DB2212D28FF06FC6CCE6AFA92DC7A" blockId="4.[981,1328,793,850]" box="[981,1328,793,818]" pageId="4" pageNumber="75">
<heading id="0555054D2D28FF06FC6CCE6AFA92DC7A" bold="true" box="[981,1328,793,818]" centered="true" fontSize="10" level="2" pageId="4" pageNumber="75" reason="2">
<emphasis id="6CD66E332D28FF06FC6CCE6AFA92DC7A" bold="true" box="[981,1328,793,818]" pageId="4" pageNumber="75">
<taxonomicName id="99A2C9A22D28FF06FC6CCE6AFB35DC79" ID-CoL="6H583" authority="Ng &amp; Ho, 2003" authorityName="Ng &amp; Ho" authorityYear="2003" box="[981,1175,794,818]" class="Malacostraca" family="Ethusidae" genus="Ethusina" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="75" phylum="Arthropoda" rank="species" species="chenae" status="sp. nov.">
<emphasis id="6CD66E332D28FF06FC6CCE6AFB35DC79" bold="true" box="[981,1175,794,818]" italics="true" pageId="4" pageNumber="75">Ethusina chenae</emphasis>
</taxonomicName>
,
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<paragraph id="5E1DB2212D28FF06FBFDCE4BFB63DC19" blockId="4.[981,1328,793,850]" box="[1092,1217,827,850]" pageId="4" pageNumber="75">
(
<figureCitation id="C699AEA42D28FF06FBF5CE4BFB3EDC19" box="[1100,1180,827,850]" captionStart="Fig" captionStartId="5.[113,149,943,964]" captionTargetBox="[114,752,190,927]" captionTargetId="figure-278@5.[114,752,497,927]" captionTargetPageId="5" captionText="Fig. 6. Ethusina chenae, new species. Holotype female, 11.0 by 10.5 mm (NTOU). A, overall view; B, carapace." figureDoi="http://doi.org/10.5281/zenodo.4619351" httpUri="https://zenodo.org/record/4619351/files/figure.png" pageId="4" pageNumber="75">Figs. 6</figureCitation>
,
<figureCitation id="C699AEA42D28FF06FB12CE4BFB1BDC19" box="[1195,1209,827,850]" captionStart="Fig" captionStartId="5.[114,150,2065,2086]" captionTargetBox="[212,1364,1046,1999]" captionTargetId="figure-277@5.[186,1380,1040,2016]" captionTargetPageId="5" captionText="Fig. 7. Ethusina chenae, new species. Holotype female, 11.0 by 10.5 mm (NTOU). A, carapace; B, left orbit, antenna and antennule; C, right P2; D, right P5; E, right chela. Scales: A, C = 5.0 mm; B, D, E = 1.0 mm." figureDoi="http://doi.org/10.5281/zenodo.4619353" httpUri="https://zenodo.org/record/4619353/files/figure.png" pageId="4" pageNumber="75">7</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="16B8E1AA2D28FF07FCFACEF0FC75DFB9" lastPageId="5" lastPageNumber="76" pageId="4" pageNumber="75" type="materials_examined">
<paragraph id="5E1DB2212D28FF06FCFACEF0FA61DC9C" blockId="4.[835,1475,896,983]" pageId="4" pageNumber="75">
<emphasis id="6CD66E332D28FF06FCFACEF0FB89DCDE" bold="true" box="[835,1067,896,917]" italics="true" pageId="4" pageNumber="75">Material examined. –</emphasis>
<materialsCitation id="EECAB87C2D28FF06FB8CCEF0FA61DC9C" collectingDate="2000-08-01" collectionCode="NTOU, R, V" collectorName="Station CP" country="Taiwan" elevation="1316" latitude="21.958334" location="TAIWAN" longLatPrecision="125" longitude="121.05334" pageId="4" pageNumber="75" specimenCount="1" typeStatus="holotype">
<typeStatus id="81190C832D28FF06FB8CCEF0FB36DCDE" box="[1077,1172,896,917]" pageId="4" pageNumber="75" type="holotype">Holotype</typeStatus>
– female, 11.0 by
<quantity id="995A1FC42D28FF06FADCCEF0FA60DCDE" box="[1381,1474,896,917]" metricMagnitude="-2" metricUnit="m" metricValue="1.05" pageId="4" pageNumber="75" unit="mm" value="10.5">10.5 mm</quantity>
(
<collectionCode id="38B32AE42D28FF06FCF3CED1FC36DCFD" box="[842,916,929,950]" country="Taiwan" httpUri="http://grbio.org/cool/be15-j6k8" name="Institute of Marine Biology, National Taiwan Ocean University" pageId="4" pageNumber="75">NTOU</collectionCode>
),
<collectorName id="F357D7F72D28FF06FC1FCED1FBB0DCFD" box="[934,1042,929,950]" pageId="4" pageNumber="75">Station CP</collectorName>
39,
<geoCoordinate id="3B96D4E62D28FF06FBF9CED1FB08DCFD" box="[1088,1194,929,950]" degrees="21" direction="north" minutes="57.5" orientation="latitude" pageId="4" pageNumber="75" precision="92" value="21.958334">21 57.5’N</geoCoordinate>
,
<geoCoordinate id="3B96D4E62D28FF06FB0FCED1FA89DCFD" box="[1206,1323,929,950]" degrees="121" direction="east" minutes="03.2" orientation="longitude" pageId="4" pageNumber="75" precision="92" value="121.05334">121 03.2’E</geoCoordinate>
,
<quantity id="995A1FC42D28FF06FA8FCED1FA1CDCFD" box="[1334,1470,929,950]" metricMagnitude="3" metricUnit="m" metricValue="1.3165" metricValueMax="1.3169999999999997" metricValueMin="1.316" pageId="4" pageNumber="75" unit="m" value="1316.5" valueMax="1317.0" valueMin="1316.0">
<elevation id="D58F55122D28FF06FA8FCED1FA1CDCFD" box="[1334,1470,929,950]" metricMagnitude="3" metricUnit="m" metricValue="1.3165" metricValueMax="1.3169999999999997" metricValueMin="1.316" pageId="4" pageNumber="75" unit="m" value="1316.5" valueMax="1317.0" valueMin="1316.0">1316-1317 m</elevation>
</quantity>
, coll.
<collectingCountry id="26B5F2B12D28FF06FCCCCEB2FC7ADC9C" box="[885,984,962,983]" name="Taiwan" pageId="4" pageNumber="75">TAIWAN</collectingCountry>
2000,
<collectionCode id="38B32AE42D28FF06FBA4CEB2FB92DC9C" box="[1053,1072,962,983]" country="Chile" name="Departamento de Geologia, Universidad de Chile" pageId="4" pageNumber="75">R</collectionCode>
.
<collectionCode id="38B32AE42D28FF06FB8DCEB2FBEBDC9C" box="[1076,1097,962,983]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="4" pageNumber="75" type="Museum">V</collectionCode>
. “Fishery Researcher 1”,
<date id="2A1C94E12D28FF06FAFECEB2FA1DDC9C" box="[1351,1471,962,983]" pageId="4" pageNumber="75" value="2000-08-01">
<collectingDate id="3A586D092D28FF06FAFECEB2FA1DDC9C" box="[1351,1471,962,983]" pageId="4" pageNumber="75" value="2000-08-01">1 Aug.2000</collectingDate>
</date>
.
</materialsCitation>
</paragraph>
<caption id="0ADDE2A92D28FF06FF31C57FFCDFD70A" ID-DOI="http://doi.org/10.5281/zenodo.4619349" ID-Zenodo-Dep="4619349" httpUri="https://zenodo.org/record/4619349/files/figure.png" pageId="4" pageNumber="75" startId="4.[136,172,2063,2084]" targetBox="[147,1463,1037,1998]" targetPageId="4">
<paragraph id="5E1DB2212D28FF06FF31C57FFCDFD70A" blockId="4.[136,1474,2063,2113]" pageId="4" pageNumber="75">
Fig. 5.
<taxonomicName id="99A2C9A22D28FF06FF68C560FED7D76E" authority="Ng &amp; Ho, 2003" authorityName="Ng &amp; Ho" authorityYear="2003" box="[209,373,2064,2085]" class="Malacostraca" family="Ethusidae" genus="Ethusina" kingdom="Animalia" order="Decapoda" pageId="4" pageNumber="75" phylum="Arthropoda" rank="species" species="alcocki" status="sp. nov.">
<emphasis id="6CD66E332D28FF06FF68C560FED7D76E" box="[209,373,2064,2085]" italics="true" pageId="4" pageNumber="75">Ethusina alcocki</emphasis>
</taxonomicName>
,
<taxonomicNameLabel id="77E5D3482D28FF06FE3DC57FFE5CD76F" box="[388,510,2063,2084]" pageId="4" pageNumber="75" rank="species">new species</taxonomicNameLabel>
. Holotype female, 8.2 by 9.8 mm (NTOU). A, carapace; B, left orbit, antenna and antennule; C, right P2; D, right P5; E, left chela. Scales: A-C = 5.0 mm; D, E = 1.0 mm.
</paragraph>
</caption>
<paragraph id="5E1DB2212D29FF07FC94CDB1FC75DFB9" blockId="5.[813,1452,193,242]" pageId="5" pageNumber="76">
<materialsCitation id="EECAB87C2D29FF07FC94CDB1FC71DFB9" collectingDate="2000-08-01" collectionCode="ZRC" collectorName="Station CP" country="Taiwan" elevation="1316" latitude="21.958334" location="TAIWAN" longLatPrecision="125" longitude="121.05334" pageId="5" pageNumber="76" specimenCount="1" specimenCount-female="1" typeStatus="paratype">
<typeStatus id="81190C832D29FF07FC94CDB1FC20DF9D" box="[813,898,193,214]" pageId="5" pageNumber="76" type="paratype">Paratype</typeStatus>
–
<specimenCount id="48A479A82D29FF07FC23CDB1FC53DF9D" box="[922,1009,193,214]" pageId="5" pageNumber="76" type="female">1 female</specimenCount>
, 8.5 by
<quantity id="995A1FC42D29FF07FB84CDB1FB2ADF9D" box="[1085,1160,193,214]" metricMagnitude="-3" metricUnit="m" metricValue="8.4" pageId="5" pageNumber="76" unit="mm" value="8.4">8.4 mm</quantity>
(
<collectionCode id="38B32AE42D29FF07FB2DCDB1FB6ADF9D" box="[1172,1224,193,214]" country="Singapore" httpUri="http://grbio.org/cool/16z4-1tbx" name="Zoological Reference Collection, National University of Singapore" pageId="5" pageNumber="76">ZRC</collectionCode>
), with sacculinid, same data as holotype
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="16B8E1AA2D29FF07FC94CC6AFADDDDBA" pageId="5" pageNumber="76" type="diagnosis">
<paragraph id="5E1DB2212D29FF07FC94CC6AFADDDDBA" blockId="5.[813,1453,282,753]" pageId="5" pageNumber="76">
<emphasis id="6CD66E332D29FF07FC94CC6AFC19DE79" bold="true" box="[813,955,282,306]" italics="true" pageId="5" pageNumber="76">Diagnosis. –</emphasis>
Carapace slightly broader than long; dorsal surface gently convex, with scattered low granules visible without magnification, regions not well defined. Front not prominently projecting anteriorly, with 4 teeth; median teeth lower than lateral ones, directed obliquely outwards, separated by distinct broad concavity; lateral teeth directed anteriorly, separated from median teeth by shallow concavity. External orbital spine acutely triangular, directed anteriorly or almost so, tip reaching level of tips of median frontal teeth. Lateral carapace margins gently sinuous, with posterior part distinctly convex. Posterior carapace margin almost straight. Chelipeds subequal; fingers slightly longer than palm; cutting edges with low teeth. P2 and P3 smooth, glabrous; P3 longest, merus 6.2 times as long as wide, propodus 5.2 times as long as wide; dactylus not very elongate. Male not known.
</paragraph>
</subSubSection>
<subSubSection id="16B8E1AA2D29FF07FC94CE6AFAD0DC1A" pageId="5" pageNumber="76" type="etymology">
<paragraph id="5E1DB2212D29FF07FC94CE6AFAD0DC1A" blockId="5.[813,1451,794,849]" pageId="5" pageNumber="76">
<emphasis id="6CD66E332D29FF07FC94CE6AFC62DC79" bold="true" box="[813,960,794,818]" italics="true" pageId="5" pageNumber="76">Etymology. –</emphasis>
This species is named after Chen Hui-Lian, whose studies have set the stage for the present one.
</paragraph>
</subSubSection>
<subSubSection id="16B8E1AA2D29FF04FC94CE0AFD52DCB3" lastPageId="6" lastPageNumber="77" pageId="5" pageNumber="76" type="discussion">
<paragraph id="5E1DB2212D29FF04FC94CE0AFD52DCB3" blockId="5.[813,1452,890,1010]" lastBlockId="6.[136,776,193,1016]" lastPageId="6" lastPageNumber="77" pageId="5" pageNumber="76">
<emphasis id="6CD66E332D29FF07FC94CE0AFC09DCD9" bold="true" box="[813,939,890,914]" italics="true" pageId="5" pageNumber="76">Remarks. –</emphasis>
The present new species resembles
<taxonomicName id="99A2C9A22D29FF07FA83CE0BFC60DCFA" authority="(Miers, 1886)" baseAuthorityName="Miers" baseAuthorityYear="1886" class="Malacostraca" family="Ethusidae" genus="Ethusina" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="76" phylum="Arthropoda" rank="species" species="robusta">
<emphasis id="6CD66E332D29FF07FA83CE0BFA09DCD9" box="[1338,1451,891,914]" italics="true" pageId="5" pageNumber="76">E. robusta</emphasis>
(
<bibRefCitation id="3A33CFD02D29FF07FC8DCEEAFC18DCFA" author="Miers, E" box="[820,954,922,945]" pageId="5" pageNumber="76" pagination="1 - 362" refId="ref7554" refString="Miers, E. J., 1886. Report on the Brachyura collected by H. M. S. ' Challenger' during the years 1873 - 1876. In: Report on the Scientific Results of the Exploring Voyage of H. M. S. ' Challenger', Zoology, Part 49, 17: 1 - 362, 29 pls." type="book chapter" year="1886">Miers, 1886</bibRefCitation>
)
</taxonomicName>
in terms of the shape of the carapace, and to some degree, the form of the frontal teeth. However, the present two female specimens of
<taxonomicName id="99A2C9A22D29FF07FB27CEABFAA8DCB9" authorityName="Ng &amp; Ho" authorityYear="2003" box="[1182,1290,987,1010]" class="Malacostraca" family="Ethusidae" genus="Ethusina" kingdom="Animalia" order="Decapoda" pageId="5" pageNumber="76" phylum="Arthropoda" rank="species" species="chenae">
<emphasis id="6CD66E332D29FF07FB27CEABFAA8DCB9" box="[1182,1290,987,1010]" italics="true" pageId="5" pageNumber="76">E. chenae</emphasis>
</taxonomicName>
differ from
<taxonomicName id="99A2C9A22D29FF04FA2DCEABFF78DF93" baseAuthorityName="Miers" baseAuthorityYear="1886" class="Malacostraca" family="Ethusidae" genus="Ethusina" kingdom="Animalia" lastPageId="6" lastPageNumber="77" order="Decapoda" pageId="5" pageNumber="76" phylum="Arthropoda" rank="species" species="robusta">
<emphasis id="6CD66E332D29FF04FA2DCEABFF78DF93" italics="true" lastPageId="6" lastPageNumber="77" pageId="5" pageNumber="76">E. robusta</emphasis>
</taxonomicName>
in having the median frontal teeth distinctly lower and blunter than the lateral teeth, the external orbital spine is directed only slightly obliquely outwards (vs. at an angle of about 45), the meri of the P2 and P3 are distinctly shorter proportionately, and the dactyli of the P4 and P5 are also prominently shorter proportionately (cf.
<bibRefCitation id="3A33CFD02D2AFF04FD82CC11FD63DE33" author="Miers, E" box="[571,705,353,376]" pageId="6" pageNumber="77" pagination="1 - 362" refId="ref7554" refString="Miers, E. J., 1886. Report on the Brachyura collected by H. M. S. ' Challenger' during the years 1873 - 1876. In: Report on the Scientific Results of the Exploring Voyage of H. M. S. ' Challenger', Zoology, Part 49, 17: 1 - 362, 29 pls." type="book chapter" year="1886">Miers, 1886</bibRefCitation>
: pl. 29 fig. 2, of a female specimen). The figure and description of
<taxonomicName id="99A2C9A22D2AFF04FF31CCD1FEA1DEF3" baseAuthorityName="Miers" baseAuthorityYear="1886" box="[136,259,417,440]" class="Malacostraca" family="Ethusidae" genus="Ethusina" kingdom="Animalia" order="Decapoda" pageId="6" pageNumber="77" phylum="Arthropoda" rank="species" species="robusta">
<emphasis id="6CD66E332D2AFF04FF31CCD1FEA1DEF3" box="[136,259,417,440]" italics="true" pageId="6" pageNumber="77">E. robusta</emphasis>
</taxonomicName>
by
<bibRefCitation id="3A33CFD02D2AFF04FE8CCCD1FDA4DEF3" author="Miers, E" box="[309,518,417,440]" pageId="6" pageNumber="77" pagination="1 - 362" refId="ref7554" refString="Miers, E. J., 1886. Report on the Brachyura collected by H. M. S. ' Challenger' during the years 1873 - 1876. In: Report on the Scientific Results of the Exploring Voyage of H. M. S. ' Challenger', Zoology, Part 49, 17: 1 - 362, 29 pls." type="book chapter" year="1886">Miers (1886: 332</bibRefCitation>
, pl. 29 fig. 2) differs somewhat from that of the species figured by
<bibRefCitation id="3A33CFD02D2AFF04FDCDCCB1FCA0DE93" author="Chen, H" box="[628,770,449,472]" pageId="6" pageNumber="77" pagination="118 - 139" refId="ref6649" refString="Chen, H. - L., 1986 b. Studies on the Dorippidae (Crustacea, Brachyura) of Chinese waters. Transactions of the Chinese Crustacean Society, 1: 118 - 139." type="journal article" year="1986">Chen (1986b</bibRefCitation>
,
<bibRefCitation id="3A33CFD02D2AFF04FF31CC91FF61DEB3" author="Chen, H" box="[136,195,481,504]" pageId="6" pageNumber="77" pagination="425 - 435" refId="ref6989" refString="Chen, H. - L., 2000. Crustacea Decapoda: New species and new records of Ethusinae (Dorippidae) from Vanuatu. In: Crosnier, A. (ed.), Resultats des Campagnes MUSORSTOM, 21. Memoires du Museum national d'Histoire Naturelle, Paris, 184: 425 - 435." type="journal article" year="2000">2000</bibRefCitation>
).
<bibRefCitation id="3A33CFD02D2AFF04FF6CCC91FE17DEB3" author="Chen, H" box="[213,437,481,504]" pageId="6" pageNumber="77" pagination="118 - 139" refId="ref6649" refString="Chen, H. - L., 1986 b. Studies on the Dorippidae (Crustacea, Brachyura) of Chinese waters. Transactions of the Chinese Crustacean Society, 1: 118 - 139." type="journal article" year="1986">Chen’s (1986b: 133</bibRefCitation>
, figs. 62-66) figure of a female specimen from the East
<collectingCountry id="26B5F2B12D2AFF04FE29CF71FE72DD53" box="[400,464,513,536]" name="China" pageId="6" pageNumber="77">China</collectingCountry>
Sea resembles that of
<bibRefCitation id="3A33CFD02D2AFF04FD71CF71FF70DD73" author="Miers, E" pageId="6" pageNumber="77" pagination="1 - 362" refId="ref7554" refString="Miers, E. J., 1886. Report on the Brachyura collected by H. M. S. ' Challenger' during the years 1873 - 1876. In: Report on the Scientific Results of the Exploring Voyage of H. M. S. ' Challenger', Zoology, Part 49, 17: 1 - 362, 29 pls." type="book chapter" year="1886">Miers (1886)</bibRefCitation>
, but the median frontal teeth are distinctly lower and broader, the external orbital teeth are not directed so obliquely outwards, and the dactyli of the P4 and P5 are prominently shorter. In her later study,
<bibRefCitation id="3A33CFD02D2AFF04FDFDCFF1FCA1DDD3" author="Chen, H" box="[580,771,641,664]" pageId="6" pageNumber="77" pagination="425 - 435" refId="ref6989" refString="Chen, H. - L., 2000. Crustacea Decapoda: New species and new records of Ethusinae (Dorippidae) from Vanuatu. In: Crosnier, A. (ed.), Resultats des Campagnes MUSORSTOM, 21. Memoires du Museum national d'Histoire Naturelle, Paris, 184: 425 - 435." type="journal article" year="2000">Chen (2000: 430</bibRefCitation>
,
<figureCitation id="C699AEA42D2AFF04FF31CFD1FF66DDF3" box="[136,196,673,696]" captionStart="Fig" captionStartId="2.[136,172,2008,2029]" captionTargetBox="[145,1479,252,1909]" captionTargetId="figure-90@2.[140,1487,235,1923]" captionTargetPageId="2" captionText="Fig. 3. Ethusina taiwanensis, new species. Holotype male, 7.7 by 9.5 mm (NTOU). A, carapace; B, left orbit, antenna and antennule; C, left chela; D, right P2; E, right P5; F, male abdominal segments 3-6 and telson (3-5 fused); G, H, left G1 (tip of G2 protruding from subdistal opening); I, distal part of left G1 with G2 distal segment protruding from G1 opening. Scales: A, D = 5.0 mm; B, C, E-H = 1.0 mm; I = 0.5 mm." figureDoi="http://doi.org/10.5281/zenodo.4619345" httpUri="https://zenodo.org/record/4619345/files/figure.png" pageId="6" pageNumber="77">Fig. 3</figureCitation>
) depicted a male which has somewhat straighter lateral carapace margins with more prominent and straighter external orbital teeth, and the dactyli of the P2-P5 are distinctly shorter than those figured by
<bibRefCitation id="3A33CFD02D2AFF04FDA4CE71FD0BDC53" author="Miers, E" box="[541,681,769,792]" pageId="6" pageNumber="77" pagination="1 - 362" refId="ref7554" refString="Miers, E. J., 1886. Report on the Brachyura collected by H. M. S. ' Challenger' during the years 1873 - 1876. In: Report on the Scientific Results of the Exploring Voyage of H. M. S. ' Challenger', Zoology, Part 49, 17: 1 - 362, 29 pls." type="book chapter" year="1886">Miers (1886)</bibRefCitation>
. It seems rather unlikely that there is sexual dimorphism in the proportions of the P2 and P3, and we have some doubts whether Chen’s material is really
<taxonomicName id="99A2C9A22D2AFF04FDB1CE11FDDFDC33" baseAuthorityName="Miers" baseAuthorityYear="1886" box="[520,637,865,888]" class="Malacostraca" family="Ethusidae" genus="Ethusina" kingdom="Animalia" order="Decapoda" pageId="6" pageNumber="77" phylum="Arthropoda" rank="species" sensu="stricto" species="robusta">
<emphasis id="6CD66E332D2AFF04FDB1CE11FDDFDC33" box="[520,637,865,888]" italics="true" pageId="6" pageNumber="77">E. robusta</emphasis>
</taxonomicName>
<taxonomicNameLabel id="77E5D3482D2AFF04FD3ECE11FD67DC33" box="[647,709,865,888]" pageId="6" pageNumber="77" sensu="stricto">s. str.</taxonomicNameLabel>
(
<typeStatus id="81190C832D2AFF04FD6FCE11FCA4DC33" box="[726,774,865,888]" pageId="6" pageNumber="77">type</typeStatus>
locality Arafura Sea). In any case, it is clear that the present Taiwanese material cannot be referred to the
<taxonomicName id="99A2C9A22D2AFF04FDCECED1FD4ADCF3" baseAuthorityName="Miers" baseAuthorityYear="1886" box="[631,744,929,952]" class="Malacostraca" family="Ethusidae" genus="Ethusina" kingdom="Animalia" order="Decapoda" pageId="6" pageNumber="77" phylum="Arthropoda" rank="species" species="robusta">
<emphasis id="6CD66E332D2AFF04FDCECED1FD4ADCF3" box="[631,744,929,952]" italics="true" pageId="6" pageNumber="77">E. robusta</emphasis>
</taxonomicName>
of Miers and/or Chen, and should be regarded as undescribed. Clearly a revision of this group of species is warranted.
</paragraph>
</subSubSection>
</treatment>
</document>
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