450 lines
57 KiB
XML
450 lines
57 KiB
XML
<document id="C3A06F30A27BA5642B524A5470226C5E" ID-DOI="10.5281/zenodo.157594" ID-GBIF-Dataset="b8cfde94-9f4c-4aec-8d46-569b04e37650" ID-ISSN="11755326" ID-Zenodo-Dep="157594" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1461016616451" checkinUser="plazi" docAuthor="Choudhury, Madhumita & Brandt, Angelika" docDate="2004" docId="03E087F0FFEA4847FE89FE4FFB9EF93A" docLanguage="en" docName="zt00501.pdf" docOrigin="Zootaxa 501" docStyle="DocumentStyle:FA7E419B012A62B0FC3AC15A186C3DAF.3:Zootaxa.2001-2006.journal_article" docStyleId="FA7E419B012A62B0FC3AC15A186C3DAF" docStyleName="Zootaxa.2001-2006.journal_article" docStyleVersion="3" docTitle="Mesosignum weddellensis Choudhury & Brandt, 2004, sp. nov." docType="treatment" docVersion="8" lastPageNumber="9" masterDocId="FFD9FF88FFE8484FFF81FFCBFFBAFFEC" masterDocTitle="Mesosignum weddellensis sp. nov. (Crustacea: Asellota: Mesosignidae), a new isopod species from the abyssal Weddell Sea, Antarctica" masterLastPageNumber="10" masterPageNumber="1" pageNumber="3" updateTime="1698568883288" updateUser="plazi">
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<mods:title id="442595EBA6B9080B6360DA4A2A55AE41">Mesosignum weddellensis sp. nov. (Crustacea: Asellota: Mesosignidae), a new isopod species from the abyssal Weddell Sea, Antarctica</mods:title>
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<mods:name id="92D980B10A7EF7C28B8084384C08AA90" type="personal">
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<mods:namePart id="5681EE34E3D11EEB993E903000724BD5">Choudhury, Madhumita</mods:namePart>
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<mods:roleTerm id="B5A3959732ECF77B3856D4A7D4D30F2C">Author</mods:roleTerm>
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<mods:namePart id="B596188938B992CA79D61D2CE2C18C68">Brandt, Angelika</mods:namePart>
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</mods:name>
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<mods:typeOfResource id="7642A7D839FA8E5C8DEA2E808C8B7C36">text</mods:typeOfResource>
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<mods:title id="6FDC6F30290202DDB8C5E01C6D9308C5">Zootaxa</mods:title>
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</mods:titleInfo>
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<mods:part id="197416C2D5D4E769716385CA1131E781">
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<mods:date id="CD91303238482ADDE5E5B10CB36E5C35">2004</mods:date>
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<mods:detail id="64D0EEF76046AFC2C731C9FF7B4656A5" type="volume">
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<mods:number id="41DBE812BEEC8F9E8C056CBEF0EA2403">501</mods:number>
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<mods:classification id="06529294309D507FB4BAC5ABEF4CEA57">journal article</mods:classification>
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<mods:identifier id="309AD4D281DE879E698BFCE9656CEB1D" type="DOI">10.5281/zenodo.157594</mods:identifier>
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<treatment id="03E087F0FFEA4847FE89FE4FFB9EF93A" ID-DOI="http://doi.org/10.5281/zenodo.6272895" ID-GBIF-Taxon="119601684" ID-Zenodo-Dep="6272895" LSID="urn:lsid:plazi:treatment:03E087F0FFEA4847FE89FE4FFB9EF93A" httpUri="http://treatment.plazi.org/id/03E087F0FFEA4847FE89FE4FFB9EF93A" lastPageId="8" lastPageNumber="9" pageId="2" pageNumber="3">
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<subSubSection id="C353656DFFEA484DFE89FE4FFC8AFE71" box="[264,816,387,414]" pageId="2" pageNumber="3" type="nomenclature">
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<paragraph id="8BF636E6FFEA484DFE89FE4FFC8AFE71" blockId="2.[264,816,283,414]" box="[264,816,387,414]" pageId="2" pageNumber="3">
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<heading id="D0BE818AFFEA484DFE89FE4FFC8AFE71" bold="true" box="[264,816,387,414]" fontSize="11" level="1" pageId="2" pageNumber="3" reason="1">
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<emphasis id="B93DEAF4FFEA484DFE89FE4FFC8AFE71" bold="true" box="[264,816,387,414]" pageId="2" pageNumber="3">
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||
<taxonomicName id="4C494D65FFEA484DFE89FE4FFDFBFE72" ID-CoL="426HB" box="[264,577,388,414]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="2" pageNumber="3" phylum="Arthropoda" rank="species" species="weddellensis" status="sp. nov.">
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<emphasis id="B93DEAF4FFEA484DFE89FE4FFDFBFE72" bold="true" box="[264,577,388,414]" italics="true" pageId="2" pageNumber="3">Mesosignum weddellensis</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="A20E578FFFEA484DFDC8FE48FD1CFE71" box="[585,678,387,413]" pageId="2" pageNumber="3" rank="species">sp. nov.</taxonomicNameLabel>
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||
(
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<figureCitation id="13722A63FFEA484DFD37FE48FC9DFE71" box="[694,807,387,413]" captionStart-0="FIGURE 1" captionStart-1="FIGURE 2" captionStart-2="FIGURE 3" captionStart-3="FIGURE 4" captionStartId-0="3.[264,367,1789,1813]" captionStartId-1="4.[264,367,1821,1845]" captionStartId-2="6.[264,367,1770,1794]" captionStartId-3="7.[264,367,1838,1862]" captionTargetBox-0="[296,1237,486,1763]" captionTargetBox-1="[341,1292,543,1787]" captionTargetBox-2="[274,1237,317,1737]" captionTargetBox-3="[282,1299,527,1801]" captionTargetId-0="figure@3.[285,1302,449,1785]" captionTargetId-1="figure@4.[268,1318,530,1819]" captionTargetId-2="figure@6.[258,1328,305,1759]" captionTargetId-3="figure@7.[261,1326,491,1833]" captionTargetPageId-0="3" captionTargetPageId-1="4" captionTargetPageId-2="6" captionTargetPageId-3="7" captionText-0="FIGURE 1, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, dorsal view. Scale bar = 1 mm, b, antennule; c, antenna. Scale bar = 0.1 mm." captionText-1="FIGURE 2, Mesosignum weddellensis sp. nov., holotype (2.0 mm). a, left mandible; b, right mandible; c, maxillule; d, maxilla; e, maxilliped. Scale bar = 0.1 mm." captionText-2="FIGURE 3, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, pereopod 1; b, pereopod 2; c, pereopod 4; d, pereopod 5; e, pereopod 7. Scale bar = 0.1 mm." captionText-3="FIGURE 4, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, pereopod 6; b, pereopod 3; c, first pleopod; d, second pleopod; e, left uropod. Scale bar = 0.1 mm." httpUri-0="https://zenodo.org/record/157595/files/figure.png" httpUri-1="https://zenodo.org/record/157596/files/figure.png" httpUri-2="https://zenodo.org/record/157597/files/figure.png" httpUri-3="https://zenodo.org/record/157598/files/figure.png" pageId="2" pageNumber="3">Figs. 1–4</figureCitation>
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)
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</emphasis>
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</heading>
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||
</paragraph>
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||
</subSubSection>
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||
<subSubSection id="C353656DFFEA484DFE89FE04FB94FCBD" pageId="2" pageNumber="3" type="materials_examined">
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<paragraph id="8BF636E6FFEA484DFE89FE04FBCDFDFD" blockId="2.[264,1324,462,1889]" pageId="2" pageNumber="3">
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<emphasis id="B93DEAF4FFEA484DFE89FE04FE48FE04" box="[264,498,463,488]" italics="true" pageId="2" pageNumber="3">Material examined:</emphasis>
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<typeStatus id="54F28844FFEA484DFE7FFE04FDCAFE05" box="[510,624,463,489]" pageId="2" pageNumber="3" type="holotype">Holotype</typeStatus>
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: 1 ɗ (2.0 mm),
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<collectionCode id="ED58AE23FFEA484DFCB6FE04FCC2FE05" box="[823,888,463,489]" httpUri="http://grbio.org/cool/kdnf-0379" name="Zoologisches Museum Hamburg" pageId="2" pageNumber="3">ZMH</collectionCode>
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<accessionNumber id="941AAB05FFEA484DFC03FE04FC5EFE05" box="[898,996,463,489]" httpUri="https://www.ebi.ac.uk/ena/browser/api/embl/K40530" pageId="2" pageNumber="3" type="EnaNcbi">K40530</accessionNumber>
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, Weddell Sea; Station 135, 65°006’S, 43°119’W, depth
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<quantity id="4CB19B03FFEA484DFDD2FE3CFD42FDFD" box="[595,760,503,529]" metricMagnitude="3" metricUnit="m" metricValue="4.678" metricValueMax="4.679" metricValueMin="4.677" pageId="2" pageNumber="3" unit="m" value="4678.0" valueMax="4679.0" valueMin="4677.0">4677–4679 m</quantity>
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,
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<date id="FFF71026FFEA484DFC85FE3CFC03FDFD" box="[772,953,503,529]" pageId="2" pageNumber="3" value="2002-03-11">11 March 2002</date>
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, RV
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<emphasis id="B93DEAF4FFEA484DFC73FE3CFBD5FDFC" box="[1010,1135,503,528]" italics="true" pageId="2" pageNumber="3">Polarstern</emphasis>
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.
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</paragraph>
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<paragraph id="8BF636E6FFEA484DFEB9FDD4FC3FFCC5" blockId="2.[264,1324,462,1889]" pageId="2" pageNumber="3">
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<emphasis id="B93DEAF4FFEA484DFEB9FDD4FD41FDD4" box="[312,763,543,568]" italics="true" pageId="2" pageNumber="3">
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Also examined:
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<taxonomicName id="4C494D65FFEA484DFE7AFDD4FD41FDD4" authority="Menzies & Frankenberg, 1968" authorityName="Menzies & Frankenberg" authorityYear="1968" box="[507,763,543,568]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="2" pageNumber="3" phylum="Arthropoda" rank="species" species="asperum">Mesosignum asperum</taxonomicName>
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</emphasis>
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<bibRefCitation id="EFD84B17FFEA484DFC83FDD4FBD3FDD5" author="Menzies" box="[770,1129,543,569]" pageId="2" pageNumber="10" refString="Menzies, R. J. & Frankenberg, D. (1968) Systematics and distribution of the bathyal - abyssal genus Mesosignum (Crustacea, Isopoda). In: Schmitt, W. L., & Llano, G., 1968: Biology of Antarctic Seas III. Antarctic Research Series, 11, 141 - 184." type="journal article" year="1968">Menzies & Frankenberg, 1968</bibRefCitation>
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,
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<typeStatus id="54F28844FFEA484DFBF4FDD4FB66FDD5" box="[1141,1244,543,569]" pageId="2" pageNumber="3" type="holotype">holotype</typeStatus>
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ɗ (
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<quantity id="4CB19B03FFEA484DFA84FDD4FE80FD8D" metricMagnitude="-3" metricUnit="m" metricValue="1.6" pageId="2" pageNumber="3" unit="mm" value="1.6">1.6 mm</quantity>
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),
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<collectionCode id="ED58AE23FFEA484DFED2FD8CFE17FD8D" LSID="urn:lsid:biocol.org:col:34925" box="[339,429,583,609]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34925" name="American Museum of Natural History" pageId="2" pageNumber="3">AMNH</collectionCode>
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12494, Station:
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<date id="FFF71026FFEA484DFDFCFD8CFD57FD8D" box="[637,749,583,609]" pageId="2" pageNumber="3" value="1948-05-15">V–15–48</date>
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,
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||
<geoCoordinate id="EE7D5021FFEA484DFD7FFD8CFCDCFD8D" box="[766,870,583,609]" direction="north" orientation="latitude" pageId="2" pageNumber="3" precision="925" value="10.116667">10°07’N</geoCoordinate>
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||
,
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||
<geoCoordinate id="EE7D5021FFEA484DFCF6FD8CFC58FD8D" box="[887,994,583,609]" direction="west" orientation="longitude" pageId="2" pageNumber="3" precision="925" value="-89.833336">89°50’W</geoCoordinate>
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||
,
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<quantity id="4CB19B03FFEA484DFC75FD8CFBEFFD8D" box="[1012,1109,583,609]" metricMagnitude="3" metricUnit="m" metricValue="3.718" pageId="2" pageNumber="3" unit="m" value="3718.0">3718 m</quantity>
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, East Pacific, off
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<collectingCountry id="F35E7676FFEA484DFE89FDA4FE31FD65" box="[264,395,623,649]" name="Costa Rica" pageId="2" pageNumber="3">Costa Rica</collectingCountry>
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,
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<date id="FFF71026FFEA484DFE17FDA4FDC6FD65" box="[406,636,623,649]" pageId="2" pageNumber="3" value="1958-11-21">21 November 1958</date>
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.
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<taxonomicName id="4C494D65FFEA484DFD09FDA4FBE8FD65" authority="Birstein, 1963" authorityName="Birstein" authorityYear="1963" box="[648,1106,623,649]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="2" pageNumber="3" phylum="Arthropoda" rank="species" species="brevispinis">
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<emphasis id="B93DEAF4FFEA484DFD09FDA4FC18FD64" box="[648,930,623,648]" italics="true" pageId="2" pageNumber="3">Mesosignum brevispinis</emphasis>
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Birstein, 1963
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</taxonomicName>
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,
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<typeStatus id="54F28844FFEA484DFBDEFDA4FB7FFD65" box="[1119,1221,623,649]" pageId="2" pageNumber="3" type="holotype">holotype</typeStatus>
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(no registration number available) Ψ (
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<quantity id="4CB19B03FFEA484DFD00FD5CFD5EFD5D" box="[641,740,663,689]" metricMagnitude="-3" metricUnit="m" metricValue="1.6" pageId="2" pageNumber="3" unit="mm" value="1.6">1.6 mm</quantity>
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),
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<geoCoordinate id="EE7D5021FFEA484DFD7CFD5CFCC1FD5D" box="[765,891,663,689]" direction="north" orientation="latitude" pageId="2" pageNumber="3" precision="92" value="48.84667">48°50.8’N</geoCoordinate>
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,
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<geoCoordinate id="EE7D5021FFEA484DFC0AFD5CFBAFFD5D" box="[907,1045,663,689]" direction="east" orientation="longitude" pageId="2" pageNumber="3" precision="92" value="160.01666">160°01.0’E</geoCoordinate>
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,
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<quantity id="4CB19B03FFEA484DFBA4FD5CFB74FD5D" box="[1061,1230,663,689]" metricMagnitude="3" metricUnit="m" metricValue="5.675" metricValueMax="5.68" metricValueMin="5.67" pageId="2" pageNumber="3" unit="m" value="5675.0" valueMax="5680.0" valueMin="5670.0">5670–5680 m</quantity>
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, Vityaz Station 3114, Kurile Islands, 1954;
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<taxonomicName id="4C494D65FFEA484DFD3BFD74FBC9FD35" authority="Menzies, 1962" authorityName="Menzies" authorityYear="1962" box="[698,1139,703,729]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="2" pageNumber="3" phylum="Arthropoda" rank="species" species="usheri">
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<emphasis id="B93DEAF4FFEA484DFD3BFD74FC18FD34" box="[698,930,703,728]" italics="true" pageId="2" pageNumber="3">Mesosignum usheri</emphasis>
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||
(
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<bibRefCitation id="EFD84B17FFEA484DFC35FD74FBD3FD35" author="Menzies" box="[948,1129,703,729]" pageId="2" pageNumber="10" refString="Menzies, R. J. (1962) The isopods of abyssal depth in the Atlantic Ocean. In: Abyssal Crustacea, Vema Research Series, No 1, 184 - 185." type="journal article" year="1962">Menzies, 1962</bibRefCitation>
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||
)
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||
</taxonomicName>
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||
,
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||
<typeStatus id="54F28844FFEA484DFB03FD74FB52FD35" box="[1154,1256,703,729]" pageId="2" pageNumber="3" type="holotype">holotype</typeStatus>
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||
ɗ (
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||
<quantity id="4CB19B03FFEA484DFA9AFD74FE80FCED" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="2" pageNumber="3" unit="mm" value="2.0">2 mm</quantity>
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||
),
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||
<collectionCode id="ED58AE23FFEA484DFED1FD2CFE10FCED" LSID="urn:lsid:biocol.org:col:34925" box="[336,426,743,769]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34925" name="American Museum of Natural History" pageId="2" pageNumber="3">AMNH</collectionCode>
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12049, Station:
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<date id="FFF71026FFEA484DFDF0FD2CFD5BFCED" box="[625,737,743,769]" bridgedPair="-" pageId="2" pageNumber="3" value="1915-05-13">V–15–13</date>
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||
,
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||
<geoCoordinate id="EE7D5021FFEA484DFD6EFD2CFCFDFCED" box="[751,839,743,769]" direction="north" orientation="latitude" pageId="2" pageNumber="3" precision="925" value="11.05">11°3’N</geoCoordinate>
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||
,
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<geoCoordinate id="EE7D5021FFEA484DFCD4FD2CFC0BFCED" box="[853,945,743,769]" direction="west" orientation="longitude" pageId="2" pageNumber="3" precision="925" value="-75.05">75°3’W</geoCoordinate>
|
||
,
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||
<quantity id="4CB19B03FFEA484DFC41FD2CFBDDFCED" box="[960,1127,743,769]" metricMagnitude="3" metricUnit="m" metricValue="2.9095" metricValueMax="2.944" metricValueMin="2.875" pageId="2" pageNumber="3" unit="m" value="2909.5" valueMax="2944.0" valueMin="2875.0">2875–2944 m</quantity>
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||
, continental rise northwest of Cartegena,
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||
<collectingCountry id="F35E7676FFEA484DFDA9FCC4FD25FCC5" box="[552,671,783,809]" name="Colombia" pageId="2" pageNumber="3">Colombia</collectingCountry>
|
||
,
|
||
<date id="FFF71026FFEA484DFD2BFCC4FC3BFCC5" box="[682,897,783,809]" pageId="2" pageNumber="3" value="1958-11-08">8 November 1958</date>
|
||
.
|
||
</paragraph>
|
||
<paragraph id="8BF636E6FFEA484DFEB9FCFCFB94FCBD" blockId="2.[264,1324,462,1889]" box="[312,1070,823,849]" pageId="2" pageNumber="3">
|
||
<typeStatus id="54F28844FFEA484DFEB9FCFCFEC8FCBD" box="[312,370,823,849]" pageId="2" pageNumber="3">Type</typeStatus>
|
||
locality: Weddell Sea, 65°006’S–43°119’W,
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||
<quantity id="4CB19B03FFEA484DFC05FCFCFB93FCBD" box="[900,1065,823,849]" metricMagnitude="3" metricUnit="m" metricValue="4.678" metricValueMax="4.679" metricValueMin="4.677" pageId="2" pageNumber="3" unit="m" value="4678.0" valueMax="4679.0" valueMin="4677.0">4677–4679 m</quantity>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C353656DFFEA484DFEB9FC94FBF1FC1D" pageId="2" pageNumber="3" type="diagnosis">
|
||
<paragraph id="8BF636E6FFEA484DFEB9FC94FBF1FC1D" blockId="2.[264,1324,462,1889]" pageId="2" pageNumber="3">
|
||
<emphasis id="B93DEAF4FFEA484DFEB9FC94FE15FC94" box="[312,431,863,888]" italics="true" pageId="2" pageNumber="3">Diagnosis</emphasis>
|
||
: Pereonite 1 without lateral extensions, pereonites 2 and 3 with long lateral extensions, with two branches, pereonite 4–7 only with one lateral extension. Posterodorsal part of the body with few small spines. Pleotelson oval, apex with 8 medial spines, slightly longer than wide, with 1 pair of lateral extensions on each side.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C353656DFFEA4847FEB9FC34FCA4FE6A" lastPageId="8" lastPageNumber="9" pageId="2" pageNumber="3" type="description">
|
||
<paragraph id="8BF636E6FFEA484DFEB9FC34FB3FFB55" blockId="2.[264,1324,462,1889]" pageId="2" pageNumber="3">
|
||
<emphasis id="B93DEAF4FFEA484DFEB9FC34FE78FBF4" box="[312,450,1023,1048]" italics="true" pageId="2" pageNumber="3">Description</emphasis>
|
||
(
|
||
<figureCitation id="13722A63FFEA484DFE52FC34FDAAFBF5" box="[467,528,1023,1049]" captionStart="FIGURE 1" captionStartId="3.[264,367,1789,1813]" captionTargetBox="[296,1237,486,1763]" captionTargetId="figure@3.[285,1302,449,1785]" captionTargetPageId="3" captionText="FIGURE 1, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, dorsal view. Scale bar = 1 mm, b, antennule; c, antenna. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157595/files/figure.png" pageId="2" pageNumber="3">Fig.1</figureCitation>
|
||
a): Body 1.4 times as long as wide; pereonite 1 as long as head and slightly broader, lateral margin smooth. Pereonites 2 and 3 with long lateral extensions, with 2 branches, anterior branch longer than posterior, pereonites 4–7 with only 1 lateral extension. Lateral extensions with spines. Anterior lateral extensions of pereonite 2–3 directed frontally. Pereonite 4 as long as pereonite 7, both longest segments.
|
||
</paragraph>
|
||
<paragraph id="8BF636E6FFEA484DFEB9FB0CFC73FA6D" blockId="2.[264,1324,462,1889]" pageId="2" pageNumber="3">Pereonites 5 and 7 dorsal surface with very few short spines. Pereonite 5 laterally directed, pereonite 6–7 more or less caudolaterally directed. Pereonite 6 widest. Pleotelson oval, 0.3 as long as body, slightly longer than wide, with 16 lateral spines; lateral margins each with 2 lateral extensions, both directed posteriorly, anterior extension longer than posterior, at 0.5 length and posterior extension at 0.8 length.</paragraph>
|
||
<paragraph id="8BF636E6FFEA484DFEB9FA44FD39F905" blockId="2.[264,1324,462,1889]" pageId="2" pageNumber="3">
|
||
Antennula (
|
||
<figureCitation id="13722A63FFEA484DFE42FA44FDB0FA45" box="[451,522,1423,1449]" captionStart="FIGURE 1" captionStartId="3.[264,367,1789,1813]" captionTargetBox="[296,1237,486,1763]" captionTargetId="figure@3.[285,1302,449,1785]" captionTargetPageId="3" captionText="FIGURE 1, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, dorsal view. Scale bar = 1 mm, b, antennule; c, antenna. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157595/files/figure.png" pageId="2" pageNumber="3">Fig. 1</figureCitation>
|
||
b): Peduncle with 3 articles, flagellum with 4 articles. First peduncular article broadest with 1 distomedial spine and 1 simple seta. Second peduncular article about twice as long as first, but narrower, with 1 long and 1 shorter featherlike seta. Third peduncular article half as long as first, with 1 simple seta. Flagellum article 1 slightly shorter than peduncular article 3, with 1 featherlike seta; flagellum article 2 about as long as article 1, with 1 long aesthetasc and 1 shorter simple seta; remaining articles becoming progressively shorter and narrower, each with 1 long aesthetasc, which is broken off at tip and 1 short simple seta, terminal article shortest and narrowest, with 1 aesthetasc, and 2 long simple setae.
|
||
</paragraph>
|
||
<paragraph id="8BF636E6FFEA484CFEB9F93CFBF5FEB2" blockId="2.[264,1324,462,1889]" lastBlockId="3.[264,1323,284,350]" lastPageId="3" lastPageNumber="4" pageId="2" pageNumber="3">
|
||
Antenna (
|
||
<figureCitation id="13722A63FFEA484DFE2AF93CFE4AF8FD" box="[427,496,1783,1809]" captionStart="FIGURE 1" captionStartId="3.[264,367,1789,1813]" captionTargetBox="[296,1237,486,1763]" captionTargetId="figure@3.[285,1302,449,1785]" captionTargetPageId="3" captionText="FIGURE 1, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, dorsal view. Scale bar = 1 mm, b, antennule; c, antenna. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157595/files/figure.png" pageId="2" pageNumber="3">Fig. 1</figureCitation>
|
||
c): Only the first 4 short peduncular articles present. First article small and rectangular, without setation; second article almost quadrangular with 1 proximolateral and 3 distolateral setae, which are broken off; third article half as long as second, with 1 medial and 2 lateral robust setae, with broken tips; fourth article as long as second, with 2 distolateral simple setae, 4 medial simple setae, 3 of these broken off.
|
||
</paragraph>
|
||
<caption id="DF36666EFFEB484CFE89F936FC9AF8D4" httpUri="https://zenodo.org/record/157595/files/figure.png" pageId="3" pageNumber="4" targetBox="[296,1237,486,1763]" targetPageId="3">
|
||
<paragraph id="8BF636E6FFEB484CFE89F936FC9AF8D4" blockId="3.[264,1322,1787,1848]" pageId="3" pageNumber="4">
|
||
<emphasis id="B93DEAF4FFEB484CFE89F936FE39F8F9" bold="true" box="[264,387,1789,1813]" pageId="3" pageNumber="4">FIGURE 1</emphasis>
|
||
,
|
||
<taxonomicName id="4C494D65FFEB484CFE10F936FD1DF8F8" box="[401,679,1789,1812]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="3" pageNumber="4" phylum="Arthropoda" rank="species" species="weddellensis" status="sp. nov.">
|
||
<emphasis id="B93DEAF4FFEB484CFE10F936FD1DF8F8" box="[401,679,1789,1812]" italics="true" pageId="3" pageNumber="4">Mesosignum weddellensis</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="A20E578FFFEB484CFD2FF936FCB9F8F8" box="[686,771,1789,1812]" pageId="3" pageNumber="4" rank="species">sp. nov.</taxonomicNameLabel>
|
||
, holotype ɗ (2.0 mm). a, dorsal view. Scale bar = 1 mm, b, antennule; c, antenna. Scale bar = 0.1 mm.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8BF636E6FFEC484BFEB9FED7FDCAFE27" blockId="4.[264,1323,284,459]" pageId="4" pageNumber="5">
|
||
Mandibles (
|
||
<figureCitation id="13722A63FFEC484BFE47FED7FDB5FEDA" box="[454,527,284,310]" captionStart="FIGURE 2" captionStartId="4.[264,367,1821,1845]" captionTargetBox="[341,1292,543,1787]" captionTargetId="figure@4.[268,1318,530,1819]" captionTargetPageId="4" captionText="FIGURE 2, Mesosignum weddellensis sp. nov., holotype (2.0 mm). a, left mandible; b, right mandible; c, maxillule; d, maxilla; e, maxilliped. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157596/files/figure.png" pageId="4" pageNumber="5">Fig. 2</figureCitation>
|
||
a, b): first article with 1 simple seta, third article longer and narrower than first, with 5 simple setae of varying lengths; incisor of right mandible with 3 cusps, incisor of left mandible broken off; lacinia mobilis of right mandible with 2 teeth; right spine row of 5 setae; molar very long and slender, right mandible with 3 setulated setae and left mandible with 4.
|
||
</paragraph>
|
||
<caption id="DF36666EFFEC484BFE89F8D6FC54F8B4" httpUri="https://zenodo.org/record/157596/files/figure.png" pageId="4" pageNumber="5" targetBox="[341,1292,543,1787]" targetPageId="4">
|
||
<paragraph id="8BF636E6FFEC484BFE89F8D6FC54F8B4" blockId="4.[264,1322,1821,1880]" pageId="4" pageNumber="5">
|
||
<emphasis id="B93DEAF4FFEC484BFE89F8D6FE3CF8D9" bold="true" box="[264,390,1821,1845]" pageId="4" pageNumber="5">FIGURE 2</emphasis>
|
||
,
|
||
<taxonomicName id="4C494D65FFEC484BFE19F8D5FD0AF8D9" box="[408,688,1822,1845]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="4" pageNumber="5" phylum="Arthropoda" rank="species" species="weddellensis" status="sp. nov.">
|
||
<emphasis id="B93DEAF4FFEC484BFE19F8D5FD0AF8D9" box="[408,688,1822,1845]" italics="true" pageId="4" pageNumber="5">Mesosignum weddellensis</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="A20E578FFFEC484BFD3BF8D6FCA8F8D8" box="[698,786,1821,1844]" pageId="4" pageNumber="5" rank="species">sp. nov.</taxonomicNameLabel>
|
||
, holotype (2.0 mm). a, left mandible; b, right mandible; c, maxillule; d, maxilla; e, maxilliped. Scale bar = 0.1 mm.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8BF636E6FFED484AFEB9FED7FC99FEB2" blockId="5.[264,1325,284,1830]" pageId="5" pageNumber="6">
|
||
Maxillula (
|
||
<figureCitation id="13722A63FFED484AFE38FED7FE44FEDA" box="[441,510,284,310]" captionStart="FIGURE 2" captionStartId="4.[264,367,1821,1845]" captionTargetBox="[341,1292,543,1787]" captionTargetId="figure@4.[268,1318,530,1819]" captionTargetPageId="4" captionText="FIGURE 2, Mesosignum weddellensis sp. nov., holotype (2.0 mm). a, left mandible; b, right mandible; c, maxillule; d, maxilla; e, maxilliped. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157596/files/figure.png" pageId="5" pageNumber="6">Fig. 2</figureCitation>
|
||
c): Lateral endite with 10 strong spinelike setae, smaller inner endite with 6 dorsal and several medial simple setae.
|
||
</paragraph>
|
||
<paragraph id="8BF636E6FFED484AFEB9FEA7FEF2FE3A" blockId="5.[264,1325,284,1830]" pageId="5" pageNumber="6">
|
||
Maxilla (
|
||
<figureCitation id="13722A63FFED484AFE22FEA7FE52FE6A" box="[419,488,364,390]" captionStart="FIGURE 2" captionStartId="4.[264,367,1821,1845]" captionTargetBox="[341,1292,543,1787]" captionTargetId="figure@4.[268,1318,530,1819]" captionTargetPageId="4" captionText="FIGURE 2, Mesosignum weddellensis sp. nov., holotype (2.0 mm). a, left mandible; b, right mandible; c, maxillule; d, maxilla; e, maxilliped. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157596/files/figure.png" pageId="5" pageNumber="6">Fig. 2</figureCitation>
|
||
d): Inner endite with 4 distal strong, spinelike setae, distolaterally serrated; medial endite with 4 bristles of varying lengths; lateral endite with 8 setae in two rows.
|
||
</paragraph>
|
||
<paragraph id="8BF636E6FFED484AFEB9FE2FFBE7FCFA" blockId="5.[264,1325,284,1830]" pageId="5" pageNumber="6">
|
||
Maxilliped (
|
||
<figureCitation id="13722A63FFED484AFE4AFE2FFDAEFE12" box="[459,532,484,510]" captionStart="FIGURE 2" captionStartId="4.[264,367,1821,1845]" captionTargetBox="[341,1292,543,1787]" captionTargetId="figure@4.[268,1318,530,1819]" captionTargetPageId="4" captionText="FIGURE 2, Mesosignum weddellensis sp. nov., holotype (2.0 mm). a, left mandible; b, right mandible; c, maxillule; d, maxilla; e, maxilliped. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157596/files/figure.png" pageId="5" pageNumber="6">Fig. 2</figureCitation>
|
||
e): Coxa broken off. Basis with 2 coupling hooks, lateral margin finely setulated. Endite with 5 indented spines, 1 setulated one and 4 small spines. Epipod twice as long as broad, 0.63 as long as second palp article, lateral margin fringed with short setules. First palp article shortest, rectangular, with 1 simple seta. Second article almost 3 times as long as first with 3 simple distomedial setae of varying lengths. Third article 1.5 times as long as first with 3 distolateral setae. Fourth article slightly shorter and narrower than third, with 3 distal simple setae. Last palp article narrowest, as long as fourth, with 3 apical setae, 1 setulated seta and 1 distolateral simple seta.
|
||
</paragraph>
|
||
<paragraph id="8BF636E6FFED484AFEB9FCEFFE85FB92" blockId="5.[264,1325,284,1830]" pageId="5" pageNumber="6">
|
||
Pereopod 1 (
|
||
<figureCitation id="13722A63FFED484AFE4EFCEFFDACFCD2" box="[463,534,804,830]" captionStart="FIGURE 3" captionStartId="6.[264,367,1770,1794]" captionTargetBox="[274,1237,317,1737]" captionTargetId="figure@6.[258,1328,305,1759]" captionTargetPageId="6" captionText="FIGURE 3, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, pereopod 1; b, pereopod 2; c, pereopod 4; d, pereopod 5; e, pereopod 7. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157597/files/figure.png" pageId="5" pageNumber="6">Fig. 3</figureCitation>
|
||
a): (broken into two pieces after ischium): Shorter and more slen der than pereopods 2–7; basis 3 times as long as ischium, with 3 simple setae and 4 dorsal spines of different lengths; ischium with 1 robust and 1 small dorsal simple spine; merus shorter than ischium, with 2 distodorsal, 1 distoventral and 1 proximodorsal simple setae; carpus 0.7 as long as basis, with 1 ventral long simple seta and 1 medioventral robust flagellate seta, distodorsally with 1 simple seta; propodus 0.7 as long as basis, with 2 ventral robust flagellate setae and 1 long simple seta, distodorsally with 1 simple seta, ventral margin with 2 small setal combs; dactylus 0.4 as long as propodus, 1 simple seta on ventral side.
|
||
</paragraph>
|
||
<paragraph id="8BF636E6FFED484AFEB9FB47FBBEFA52" blockId="5.[264,1325,284,1830]" pageId="5" pageNumber="6">
|
||
Pereopods 2–4 (
|
||
<figureCitation id="13722A63FFED484AFE74FB47FD80FB4A" box="[501,570,1164,1190]" captionStart="FIGURE 3" captionStartId="6.[264,367,1770,1794]" captionTargetBox="[274,1237,317,1737]" captionTargetId="figure@6.[258,1328,305,1759]" captionTargetPageId="6" captionText="FIGURE 3, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, pereopod 1; b, pereopod 2; c, pereopod 4; d, pereopod 5; e, pereopod 7. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157597/files/figure.png" pageId="5" pageNumber="6">Fig. 3</figureCitation>
|
||
b, c;
|
||
<figureCitation id="13722A63FFED484AFDFBFB47FD05FB4A" box="[634,703,1164,1190]" captionStart="FIGURE 4" captionStartId="7.[264,367,1838,1862]" captionTargetBox="[282,1299,527,1801]" captionTargetId="figure@7.[261,1326,491,1833]" captionTargetPageId="7" captionText="FIGURE 4, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, pereopod 6; b, pereopod 3; c, first pleopod; d, second pleopod; e, left uropod. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157598/files/figure.png" pageId="5" pageNumber="6">Fig. 4</figureCitation>
|
||
b): Basis 3.0 times as long as ischium, with different numbers of simple setae, 1 robust seta, 1 small spine in pereopod 2 and 1 featherlike seta on P4; ischium with few setae, in pereopod 3 with 1 smaller and 1 bigger spine; merus shorter than ischium, with few simple setae and 1 distodorsal small spine in pereopod 3; carpus 0.7 as long as basis, with 2–3 ventral robust flagellate setae, distodorsally with 1 robust flagellate seta and one featherlike seta; propodus slightly more than 0.7 as long as carpus, ventrally 4–5 robust flagellate setae and varying numbers of setal combs, distodorsally 1–4 simple setae and 1 featherlike seta; 2 distodorsal setae.
|
||
</paragraph>
|
||
<paragraph id="8BF636E6FFED484AFEB9FA07FC75F8CA" blockId="5.[264,1325,284,1830]" pageId="5" pageNumber="6">
|
||
Pereopods 5–7 (
|
||
<figureCitation id="13722A63FFED484AFE74FA07FD81FA0A" box="[501,571,1484,1510]" captionStart="FIGURE 3" captionStartId="6.[264,367,1770,1794]" captionTargetBox="[274,1237,317,1737]" captionTargetId="figure@6.[258,1328,305,1759]" captionTargetPageId="6" captionText="FIGURE 3, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, pereopod 1; b, pereopod 2; c, pereopod 4; d, pereopod 5; e, pereopod 7. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157597/files/figure.png" pageId="5" pageNumber="6">Fig. 3</figureCitation>
|
||
d, e;
|
||
<figureCitation id="13722A63FFED484AFDFAFA07FD05FA0A" box="[635,703,1484,1510]" captionStart="FIGURE 4" captionStartId="7.[264,367,1838,1862]" captionTargetBox="[282,1299,527,1801]" captionTargetId="figure@7.[261,1326,491,1833]" captionTargetPageId="7" captionText="FIGURE 4, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, pereopod 6; b, pereopod 3; c, first pleopod; d, second pleopod; e, left uropod. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157598/files/figure.png" pageId="5" pageNumber="6">Fig. 4</figureCitation>
|
||
a): basis, 2.2–3.0 times as long as ischium, distodorsally with few simple and 1 featherlike setae, ventrally with few simple seta, pereopod 7 ventrally with 4 tiny spines, distodorsally with 7 small spines; ischium broad, 1 ventral simple seta and 1 distodorsal robust setae, in pereopod 6 also with 1 small spine; merus 0.5–0.6 times as long as ischium, with 1–3 distodorsal simple setae and 1 short ventral seta; carpus 0.7–0.8 times as long as basis, distodorsally with 1 featherlike seta, 1–2 simple and 1 robust flagellate seta, ventrally with 2 robust flagellate setae and 1 simple seta in pereopod 7; propodus 0.7–0.9 times as long as carpus, with 3–4 ventral robust flagellate setae and 3 setal combs, distodorsally with 1–2 simple setae.
|
||
</paragraph>
|
||
<caption id="DF36666EFFEE4849FE89F921FC06F8C9" httpUri="https://zenodo.org/record/157597/files/figure.png" pageId="6" pageNumber="7" targetBox="[274,1237,317,1737]" targetPageId="6">
|
||
<paragraph id="8BF636E6FFEE4849FE89F921FC06F8C9" blockId="6.[264,1323,1768,1829]" pageId="6" pageNumber="7">
|
||
<emphasis id="B93DEAF4FFEE4849FE89F921FE39F8EE" bold="true" box="[264,387,1770,1794]" pageId="6" pageNumber="7">FIGURE 3</emphasis>
|
||
,
|
||
<taxonomicName id="4C494D65FFEE4849FE11F921FD1FF8ED" box="[400,677,1770,1793]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="6" pageNumber="7" phylum="Arthropoda" rank="species" species="weddellensis" status="sp. nov.">
|
||
<emphasis id="B93DEAF4FFEE4849FE11F921FD1FF8ED" box="[400,677,1770,1793]" italics="true" pageId="6" pageNumber="7">Mesosignum weddellensis</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="A20E578FFFEE4849FD2AF921FCBAF8ED" box="[683,768,1770,1793]" pageId="6" pageNumber="7" rank="species">sp. nov.</taxonomicNameLabel>
|
||
, holotype ɗ (2.0 mm). a, pereopod 1; b, pereopod 2; c, pereopod 4; d, pereopod 5; e, pereopod 7. Scale bar = 0.1 mm.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8BF636E6FFEF4848FEB9FED7FD76FEB7" blockId="7.[264,1323,284,422]" pageId="7" pageNumber="8">
|
||
Pleopod 1 (
|
||
<figureCitation id="13722A63FFEF4848FE43FED7FDB3FEDA" box="[450,521,284,310]" captionStart="FIGURE 4" captionStartId="7.[264,367,1838,1862]" captionTargetBox="[282,1299,527,1801]" captionTargetId="figure@7.[261,1326,491,1833]" captionTargetPageId="7" captionText="FIGURE 4, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, pereopod 6; b, pereopod 3; c, first pleopod; d, second pleopod; e, left uropod. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157598/files/figure.png" pageId="7" pageNumber="8">Fig. 4</figureCitation>
|
||
c): proximally broad, narrow midlength, distal margin each with 7 simple setae, most of these broken off.
|
||
</paragraph>
|
||
<paragraph id="8BF636E6FFEF4848FEB9FEACFC78FE4A" blockId="7.[264,1323,284,422]" pageId="7" pageNumber="8">
|
||
Pleopod 2 (
|
||
<figureCitation id="13722A63FFEF4848FE45FEACFDB6FE6D" box="[452,524,359,385]" captionStart="FIGURE 4" captionStartId="7.[264,367,1838,1862]" captionTargetBox="[282,1299,527,1801]" captionTargetId="figure@7.[261,1326,491,1833]" captionTargetPageId="7" captionText="FIGURE 4, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, pereopod 6; b, pereopod 3; c, first pleopod; d, second pleopod; e, left uropod. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157598/files/figure.png" pageId="7" pageNumber="8">Fig. 4</figureCitation>
|
||
d): sympod 2.4 times as long as wide, stylet 0.7 times as long as sympod; exopod short, rounded and distally with few setae.
|
||
</paragraph>
|
||
<caption id="DF36666EFFEF4848FE89F8E5FC40F885" httpUri="https://zenodo.org/record/157598/files/figure.png" pageId="7" pageNumber="8" targetBox="[282,1299,527,1801]" targetPageId="7">
|
||
<paragraph id="8BF636E6FFEF4848FE89F8E5FC40F885" blockId="7.[264,1323,1836,1897]" pageId="7" pageNumber="8">
|
||
<emphasis id="B93DEAF4FFEF4848FE89F8E5FE39F8AA" bold="true" box="[264,387,1838,1862]" pageId="7" pageNumber="8">FIGURE 4</emphasis>
|
||
,
|
||
<taxonomicName id="4C494D65FFEF4848FE11F8E4FD1FF8AA" box="[400,677,1839,1862]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="7" pageNumber="8" phylum="Arthropoda" rank="species" species="weddellensis" status="sp. nov.">
|
||
<emphasis id="B93DEAF4FFEF4848FE11F8E4FD1FF8AA" box="[400,677,1839,1862]" italics="true" pageId="7" pageNumber="8">Mesosignum weddellensis</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="A20E578FFFEF4848FD2AF8E5FCBAF8A9" box="[683,768,1838,1861]" pageId="7" pageNumber="8" rank="species">sp. nov.</taxonomicNameLabel>
|
||
, holotype ɗ (2.0 mm). a, pereopod 6; b, pereopod 3; c, first pleopod; d, second pleopod; e, left uropod. Scale bar = 0.1 mm.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph id="8BF636E6FFE04847FEB9FED7FCA4FE6A" blockId="8.[264,1324,284,1750]" pageId="8" pageNumber="9">
|
||
Uropod (
|
||
<figureCitation id="13722A63FFE04847FE23FED7FE52FEDA" box="[418,488,284,310]" captionStart="FIGURE 4" captionStartId="7.[264,367,1838,1862]" captionTargetBox="[282,1299,527,1801]" captionTargetId="figure@7.[261,1326,491,1833]" captionTargetPageId="7" captionText="FIGURE 4, Mesosignum weddellensis sp. nov., holotype ɗ (2.0 mm). a, pereopod 6; b, pereopod 3; c, first pleopod; d, second pleopod; e, left uropod. Scale bar = 0.1 mm." httpUri="https://zenodo.org/record/157598/files/figure.png" pageId="8" pageNumber="9">Fig. 4</figureCitation>
|
||
e): Uniramous, article 1 with 1 simple long seta on medioventral margin. article 2 3.5 times as long as article 1, with 4 featherlike distal setae (2 broken off) and 3 lateral simple setae of different lengths.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C353656DFFE04847FEB9FE5FFE61F96A" pageId="8" pageNumber="9" type="discussion">
|
||
<paragraph id="8BF636E6FFE04847FEB9FE5FFDF7FDA2" blockId="8.[264,1324,284,1750]" pageId="8" pageNumber="9">
|
||
<emphasis id="B93DEAF4FFE04847FEB9FE5FFD5AFE41" box="[312,736,404,429]" italics="true" pageId="8" pageNumber="9">
|
||
Remarks:
|
||
<taxonomicName id="4C494D65FFE04847FE2EFE5FFD5AFE41" box="[431,736,404,429]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis" status="sp. nov.">Mesosignum weddellensis</taxonomicName>
|
||
</emphasis>
|
||
<taxonomicNameLabel id="A20E578FFFE04847FD66FE5FFCFBFE42" box="[743,833,404,430]" pageId="8" pageNumber="9" rank="species">sp. nov.</taxonomicNameLabel>
|
||
is most similar to
|
||
<taxonomicName id="4C494D65FFE04847FB98FE5FFEFCFE3A" authority="Birstein, 1963" authorityName="Birstein" authorityYear="1963" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="brevispinis">
|
||
<emphasis id="B93DEAF4FFE04847FB98FE5FFB7AFE41" box="[1049,1216,404,429]" italics="true" pageId="8" pageNumber="9">M. brevispinis</emphasis>
|
||
Birstein, 1963
|
||
</taxonomicName>
|
||
. Birstein illustrated only the dorsal view, antennula, proximal articles of antenna, mandible, maxilliped, and pereopod 1, other appendages not being illustrated.
|
||
<collectingCountry id="F35E7676FFE04847FB1DFE2FFB07FE12" box="[1180,1213,484,510]" name="American Samoa" pageId="8" pageNumber="9">As</collectingCountry>
|
||
the
|
||
<typeStatus id="54F28844FFE04847FB6FFE2FFE80FDCA" pageId="8" pageNumber="9" type="holotype">holotype</typeStatus>
|
||
is now incomplete, and the posterior part of the animals missing, we could not provide the necessary revision.
|
||
</paragraph>
|
||
<paragraph id="8BF636E6FFE04847FEB9FD97FE1FFB22" blockId="8.[264,1324,284,1750]" pageId="8" pageNumber="9">
|
||
The following comparison is based on the illustration of Birstein (1963) and the
|
||
<typeStatus id="54F28844FFE04847FB6CFD97FE80FD72" pageId="8" pageNumber="9" type="holotype">holotype</typeStatus>
|
||
of
|
||
<taxonomicName id="4C494D65FFE04847FEE5FD4FFDB6FD71" box="[356,524,644,669]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="brevispinis">
|
||
<emphasis id="B93DEAF4FFE04847FEE5FD4FFDB6FD71" box="[356,524,644,669]" italics="true" pageId="8" pageNumber="9">M. brevispinis</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
<taxonomicName id="4C494D65FFE04847FD9DFD4FFD7EFD71" box="[540,708,644,669]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="brevispinis">
|
||
<emphasis id="B93DEAF4FFE04847FD9DFD4FFD7EFD71" box="[540,708,644,669]" italics="true" pageId="8" pageNumber="9">M. brevispinis</emphasis>
|
||
</taxonomicName>
|
||
differs from
|
||
<taxonomicName id="4C494D65FFE04847FCE3FD4FFB9AFD71" box="[866,1056,644,669]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FCE3FD4FFB9AFD71" box="[866,1056,644,669]" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
in the following characters: the fourth pereonite of
|
||
<taxonomicName id="4C494D65FFE04847FDF7FD67FC9AFD29" box="[630,800,684,709]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="brevispinis">
|
||
<emphasis id="B93DEAF4FFE04847FDF7FD67FC9AFD29" box="[630,800,684,709]" italics="true" pageId="8" pageNumber="9">M. brevispinis</emphasis>
|
||
</taxonomicName>
|
||
has no long and acute spines on the lateral border as in
|
||
<taxonomicName id="4C494D65FFE04847FE1AFD1FFDE2FD01" box="[411,600,724,749]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FE1AFD1FFDE2FD01" box="[411,600,724,749]" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
, instead it has rounded edges with a few tiny spines. Furthermore, the first pereonite is not as broad as in Birstein’s illustration. The lateral extensions of the seventh pereonite of
|
||
<taxonomicName id="4C494D65FFE04847FDD8FCEFFCBEFCD1" box="[601,772,804,829]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="brevispinis">
|
||
<emphasis id="B93DEAF4FFE04847FDD8FCEFFCBEFCD1" box="[601,772,804,829]" italics="true" pageId="8" pageNumber="9">M. brevispinis</emphasis>
|
||
</taxonomicName>
|
||
are short, nearly half as long as those of the equivalent pereonite of
|
||
<taxonomicName id="4C494D65FFE04847FDA4FC87FD5FFC89" box="[549,741,844,869]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FDA4FC87FD5FFC89" box="[549,741,844,869]" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
. The apex of the pleotelson of
|
||
<taxonomicName id="4C494D65FFE04847FBE5FC87FAB4FC89" box="[1124,1294,844,869]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="brevispinis">
|
||
<emphasis id="B93DEAF4FFE04847FBE5FC87FAB4FC89" box="[1124,1294,844,869]" italics="true" pageId="8" pageNumber="9">M. brevispinis</emphasis>
|
||
</taxonomicName>
|
||
is not equipped with medial spines in contrast to the apex of the pleotelson of
|
||
<taxonomicName id="4C494D65FFE04847FB02FCBFFE9DFC59" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FB02FCBFFE9DFC59" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
which bears eight medial spines. The first peduncular article of the antennula of
|
||
<taxonomicName id="4C494D65FFE04847FA8AFC57FE3DFC31" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="brevispinis">
|
||
<emphasis id="B93DEAF4FFE04847FA8AFC57FE3DFC31" italics="true" pageId="8" pageNumber="9">M. brevispinis</emphasis>
|
||
</taxonomicName>
|
||
does not bear any setae, that of
|
||
<taxonomicName id="4C494D65FFE04847FCA2FC0FFC5EFC31" box="[803,996,964,989]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FCA2FC0FFC5EFC31" box="[803,996,964,989]" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
possesses one distomedial spine and one simple seta. The epipod of the maxilliped of
|
||
<taxonomicName id="4C494D65FFE04847FC4BFC27FBC8FBE9" box="[970,1138,1004,1029]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="brevispinis">
|
||
<emphasis id="B93DEAF4FFE04847FC4BFC27FBC8FBE9" box="[970,1138,1004,1029]" italics="true" pageId="8" pageNumber="9">M. brevispinis</emphasis>
|
||
</taxonomicName>
|
||
is broader than in
|
||
<taxonomicName id="4C494D65FFE04847FEA7FBDFFE59FBC1" box="[294,483,1044,1069]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FEA7FBDFFE59FBC1" box="[294,483,1044,1069]" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
, reaching to mid of fourth palp article, besides, the lateral margin of
|
||
<taxonomicName id="4C494D65FFE04847FA8AFBDFFE3DFBB9" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="brevispinis">
|
||
<emphasis id="B93DEAF4FFE04847FA8AFBDFFE3DFBB9" italics="true" pageId="8" pageNumber="9">M. brevispinis</emphasis>
|
||
</taxonomicName>
|
||
does not have the short setules of
|
||
<taxonomicName id="4C494D65FFE04847FCC8FBF7FBB6FBB9" box="[841,1036,1084,1109]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FCC8FBF7FBB6FBB9" box="[841,1036,1084,1109]" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
. The maxilliped of
|
||
<taxonomicName id="4C494D65FFE04847FA8AFBF7FE3DFB91" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="brevispinis">
|
||
<emphasis id="B93DEAF4FFE04847FA8AFBF7FE3DFB91" italics="true" pageId="8" pageNumber="9">M. brevispinis</emphasis>
|
||
</taxonomicName>
|
||
only has one coupling hook, whereas that of
|
||
<taxonomicName id="4C494D65FFE04847FC21FBAFFBE4FB91" box="[928,1118,1124,1149]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FC21FBAFFBE4FB91" box="[928,1118,1124,1149]" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
has two, the second palp article has only one simple distomedial seta in
|
||
<taxonomicName id="4C494D65FFE04847FC26FB47FBF5FB49" box="[935,1103,1164,1189]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="brevispinis">
|
||
<emphasis id="B93DEAF4FFE04847FC26FB47FBF5FB49" box="[935,1103,1164,1189]" italics="true" pageId="8" pageNumber="9">M. brevispinis</emphasis>
|
||
</taxonomicName>
|
||
, it has three in
|
||
<taxonomicName id="4C494D65FFE04847FA8AFB47FE24FB21" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FA8AFB47FE24FB21" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
<paragraph id="8BF636E6FFE04847FEB9FB17FE61F96A" blockId="8.[264,1324,284,1750]" pageId="8" pageNumber="9">
|
||
Three other species are somewhat similar to
|
||
<taxonomicName id="4C494D65FFE04847FCDFFB17FBA5FB19" box="[862,1055,1244,1269]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis" status="sp. nov.">
|
||
<emphasis id="B93DEAF4FFE04847FCDFFB17FBA5FB19" box="[862,1055,1244,1269]" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="A20E578FFFE04847FBABFB17FB36FB1A" box="[1066,1164,1244,1270]" pageId="8" pageNumber="9" rank="species">sp. nov.</taxonomicNameLabel>
|
||
:
|
||
<taxonomicName id="4C494D65FFE04847FB1AFB17FDC7FAF2" authority="Menzies & Frankenberg, 1968" authorityName="Menzies & Frankenberg" authorityYear="1968" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="asperum">
|
||
<emphasis id="B93DEAF4FFE04847FB1AFB17FA90FB19" box="[1179,1322,1244,1269]" italics="true" pageId="8" pageNumber="9">M. asperum</emphasis>
|
||
<bibRefCitation id="EFD84B17FFE04847FE89FACFFDC7FAF2" author="Menzies" box="[264,637,1284,1310]" pageId="8" pageNumber="10" refString="Menzies, R. J. & Frankenberg, D. (1968) Systematics and distribution of the bathyal - abyssal genus Mesosignum (Crustacea, Isopoda). In: Schmitt, W. L., & Llano, G., 1968: Biology of Antarctic Seas III. Antarctic Research Series, 11, 141 - 184." type="journal article" year="1968">Menzies & Frankenberg, 1968</bibRefCitation>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C494D65FFE04847FD0CFACFFC04FAF2" authority="Menzies, 1962" authorityName="Menzies" authorityYear="1962" box="[653,958,1284,1310]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="usheri">
|
||
<emphasis id="B93DEAF4FFE04847FD0CFACFFCBBFAF1" box="[653,769,1284,1309]" italics="true" pageId="8" pageNumber="9">M. usheri</emphasis>
|
||
<bibRefCitation id="EFD84B17FFE04847FC8CFACFFC04FAF2" author="Menzies" box="[781,958,1284,1310]" pageId="8" pageNumber="10" refString="Menzies, R. J. (1962) The isopods of abyssal depth in the Atlantic Ocean. In: Abyssal Crustacea, Vema Research Series, No 1, 184 - 185." type="journal article" year="1962">Menzies, 1962</bibRefCitation>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C494D65FFE04847FC7EFACFFEFCFAAA" authority="Birstein, 1963" authorityName="Birstein" authorityYear="1963" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="elegantulum">
|
||
<emphasis id="B93DEAF4FFE04847FC7EFACFFB01FAF1" box="[1023,1211,1284,1309]" italics="true" pageId="8" pageNumber="9">M. elegantulum</emphasis>
|
||
Birstein, 1963
|
||
</taxonomicName>
|
||
. However, they can be easily distinguished from
|
||
<taxonomicName id="4C494D65FFE04847FC1AFAE7FBE0FAA9" box="[923,1114,1324,1349]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FC1AFAE7FBE0FAA9" box="[923,1114,1324,1349]" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
by the following characters: the pleotelson of
|
||
<taxonomicName id="4C494D65FFE04847FDD9FA9FFD5EFA81" box="[600,740,1364,1389]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="asperum">
|
||
<emphasis id="B93DEAF4FFE04847FDD9FA9FFD5EFA81" box="[600,740,1364,1389]" italics="true" pageId="8" pageNumber="9">M. asperum</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C494D65FFE04847FC9DFA9FFC36FA81" box="[796,908,1364,1389]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="usheri">
|
||
<emphasis id="B93DEAF4FFE04847FC9DFA9FFC36FA81" box="[796,908,1364,1389]" italics="true" pageId="8" pageNumber="9">M. usheri</emphasis>
|
||
</taxonomicName>
|
||
bear only one lateral spine and this is more slender, while the pleotelson of
|
||
<taxonomicName id="4C494D65FFE04847FD63FAB7FC1AFA79" box="[738,928,1404,1430]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FD63FAB7FD40FA79" box="[738,762,1404,1429]" italics="true" pageId="8" pageNumber="9">M</emphasis>
|
||
.
|
||
<emphasis id="B93DEAF4FFE04847FC8BFAB7FC1AFA79" box="[778,928,1404,1429]" italics="true" pageId="8" pageNumber="9">weddellensis</emphasis>
|
||
</taxonomicName>
|
||
bears two lateral spines; the seventh pereonite does not have lateral extensions; each extension of
|
||
<taxonomicName id="4C494D65FFE04847FB8AFA6FFB2DFA51" box="[1035,1175,1444,1469]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="asperum">
|
||
<emphasis id="B93DEAF4FFE04847FB8AFA6FFB2DFA51" box="[1035,1175,1444,1469]" italics="true" pageId="8" pageNumber="9">M. asperum</emphasis>
|
||
</taxonomicName>
|
||
bears a long seta, these being absent in
|
||
<taxonomicName id="4C494D65FFE04847FDCCFA07FCB6FA09" box="[589,780,1484,1509]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FDCCFA07FCB6FA09" box="[589,780,1484,1509]" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
. The habitus of
|
||
<taxonomicName id="4C494D65FFE04847FC57FA07FB2BFA09" box="[982,1169,1484,1509]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="elegantulum">
|
||
<emphasis id="B93DEAF4FFE04847FC57FA07FB2BFA09" box="[982,1169,1484,1509]" italics="true" pageId="8" pageNumber="9">M. elegantulum</emphasis>
|
||
</taxonomicName>
|
||
is similar to that of
|
||
<taxonomicName id="4C494D65FFE04847FEDDFA3FFDA0F9E1" box="[348,538,1524,1549]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FEDDFA3FFDA0F9E1" box="[348,538,1524,1549]" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
but more slender, and the lateral extensions more acute; moreover the antennula is different, in
|
||
<taxonomicName id="4C494D65FFE04847FDE1F9D7FCA0F9D9" box="[608,794,1564,1589]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="elegantulum">
|
||
<emphasis id="B93DEAF4FFE04847FDE1F9D7FCA0F9D9" box="[608,794,1564,1589]" italics="true" pageId="8" pageNumber="9">M. elegantulum</emphasis>
|
||
</taxonomicName>
|
||
it has no spines and only one simple seta at the second article, while in
|
||
<taxonomicName id="4C494D65FFE04847FDDDF98FFCA7F9B1" box="[604,797,1604,1629]" class="Malacostraca" family="Mesosignidae" genus="Mesosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="9" phylum="Arthropoda" rank="species" species="weddellensis">
|
||
<emphasis id="B93DEAF4FFE04847FDDDF98FFCA7F9B1" box="[604,797,1604,1629]" italics="true" pageId="8" pageNumber="9">M. weddellensis</emphasis>
|
||
</taxonomicName>
|
||
the second article of the antennula bears a small distal spine.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C353656DFFE04847FEB9F95FFCF2F942" box="[312,840,1684,1710]" pageId="8" pageNumber="9" type="distribution">
|
||
<paragraph id="8BF636E6FFE04847FEB9F95FFCF2F942" blockId="8.[264,1324,284,1750]" box="[312,840,1684,1710]" pageId="8" pageNumber="9">
|
||
<emphasis id="B93DEAF4FFE04847FEB9F95FFE7DF941" box="[312,455,1684,1709]" italics="true" pageId="8" pageNumber="9">Distribution</emphasis>
|
||
: Known only from
|
||
<typeStatus id="54F28844FFE04847FD31F95FFD58F942" box="[688,738,1684,1710]" pageId="8" pageNumber="9">type</typeStatus>
|
||
locality.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C353656DFFE04847FEB9F977FB9EF93A" box="[312,1060,1724,1750]" pageId="8" pageNumber="9" type="etymology">
|
||
<paragraph id="8BF636E6FFE04847FEB9F977FB9EF93A" blockId="8.[264,1324,284,1750]" box="[312,1060,1724,1750]" pageId="8" pageNumber="9">
|
||
<emphasis id="B93DEAF4FFE04847FEB9F977FE0FF939" box="[312,437,1724,1749]" italics="true" pageId="8" pageNumber="9">Etymology</emphasis>
|
||
: The epithet is adapted from that of the
|
||
<typeStatus id="54F28844FFE04847FC0DF977FC04F93A" box="[908,958,1724,1750]" pageId="8" pageNumber="9">type</typeStatus>
|
||
locality.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |