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<document id="69D6A3B511BB5593E19466602395BDA9" ID-DOI="10.1080/00222930902781046" ID-ISSN="1464-5262" ID-Zenodo-Dep="5216289" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1629289470864" checkinUser="felipe" docAuthor="Doti, Brenda L. &amp; Roccatagliata, Daniel" docDate="2009" docId="F978878DFF87FF90FE5F5558CAC1FD98" docLanguage="en" docName="JNatHist.43.17-18.1115-1138.pdf" docOrigin="Journal of Natural History 43 (17 - 18)" docSource="http://dx.doi.org/10.1080/00222930902781046" docStyle="DocumentStyle:FCA295E821436EF9307F50C7AC261B53.5:JNatHist.2008-2012.journal_article.1cover" docStyleId="FCA295E821436EF9307F50C7AC261B53" docStyleName="JNatHist.2008-2012.journal_article.1cover" docStyleVersion="5" docTitle="Meridiosignum undulatum Doti &amp; Roccatagliata 2009, n. sp." docType="treatment" docVersion="3" lastPageNumber="1124" masterDocId="0541FFF5FF85FF9AFFE55337C84AFF95" masterDocTitle="On the South American species of the genus Meridiosignum (Crustacea: Isopoda: Asellota: Paramunnidae)" masterLastPageNumber="1138" masterPageNumber="1115" pageNumber="1116" updateTime="1699066390590" updateUser="plazi" zenodo-license-document="CLOSED">
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<mods:title id="21DDBEF0957B6159AF60C3C104300D87">On the South American species of the genus Meridiosignum (Crustacea: Isopoda: Asellota: Paramunnidae)</mods:title>
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<mods:namePart id="BAF8810B8328B7E81326DE12653812E1">Doti, Brenda L.</mods:namePart>
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<mods:namePart id="134E9A59E81AEA5819AAEB45B93AA68E">Roccatagliata, Daniel</mods:namePart>
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<mods:title id="B868D937486EE85B9A1877D4CB10F0A5">Journal of Natural History</mods:title>
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<mods:date id="C47E1472AD078E989C6B1D37885345F7">2009</mods:date>
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<mods:number id="685D44F40A0A854F3D396BE4678EF5D4">17 - 18</mods:number>
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<paragraph id="716E369BFF87FF98FE5F5558CB6DF912" blockId="2.[365,884,1548,1704]" box="[442,807,1647,1671]" pageId="2" pageNumber="1116">
<heading id="2A2681F7FF87FF98FE5F5558CB6DF912" box="[442,807,1647,1671]" centered="true" fontSize="10" level="2" pageId="2" pageNumber="1116" reason="3">
<taxonomicName id="B6D14D18FF87FF98FE5F5558CA94F912" ID-CoL="72ZDZ" authority="Doti &amp; Roccatagliata, 2009" authorityName="Doti &amp; Roccatagliata" authorityYear="2009" box="[442,734,1647,1671]" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="2" pageNumber="1116" phylum="Arthropoda" rank="species" species="undulatum" status="sp. nov.">
<emphasis id="43A5EA89FF87FF98FE5F5558CA94F912" bold="true" box="[442,734,1647,1671]" italics="true" pageId="2" pageNumber="1116">Meridiosignum undulatum</emphasis>
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<taxonomicNameLabel id="589657F2FF87FF98FD0D5558CB6DF912" box="[744,807,1647,1671]" pageId="2" pageNumber="1116" rank="species">n. sp.</taxonomicNameLabel>
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<paragraph id="716E369BFF87FF98FDC255A7CAF0F93D" blockId="2.[365,884,1548,1704]" box="[551,698,1680,1704]" pageId="2" pageNumber="1116">
(
<figureCitation id="E9EA2A1EFF87FF98FDCB55A7CAF8F93D" box="[558,690,1680,1704]" captionStart-0="Figure 2" captionStart-1="Figure 3" captionStart-2="Figure 4" captionStart-3="Figure 5" captionStart-4="Figure 6" captionStartId-0="4.[146,213,1368,1390]" captionStartId-1="5.[213,280,1294,1316]" captionStartId-2="6.[146,213,1405,1427]" captionStartId-3="7.[213,280,1072,1094]" captionStartId-4="8.[146,213,917,939]" captionTargetBox-0="[147,1098,169,1330]" captionTargetBox-1="[216,1170,169,1256]" captionTargetBox-2="[154,1101,170,1360]" captionTargetBox-3="[213,1169,168,1031]" captionTargetBox-4="[146,1104,165,880]" captionTargetId-0="figure-42@4.[146,1104,165,1331]" captionTargetId-1="figure-79@5.[213,1171,165,1258]" captionTargetId-2="figure-50@6.[146,1104,165,1368]" captionTargetId-3="figure-204@7.[213,1171,165,1035]" captionTargetId-4="figure-249@8.[146,1104,165,880]" captionTargetPageId-0="4" captionTargetPageId-1="5" captionTargetPageId-2="6" captionTargetPageId-3="7" captionTargetPageId-4="8" captionText-0="Figure 2. Meridiosignum undulatum n. sp. Holotype brooding ♀ (MACN-In 37527). (A) habitus in lateral view; (B) habitus in dorsal view and detail of the surface reticulate pattern; (C) head in ventral view. Scales: (A, B) 0.5 mm; (C) 0.2 mm." captionText-1="Figure 3. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) antennula; (B) antenna; (C) right mandible; (D) detail of molar process of right mandible of another specimen; (E) left mandible, detail of the incisor process; (F) maxilulla; (G) maxilla. Scales: (A, B) 0.1 mm; (C, F, G) 0.05 mm." captionText-2="Figure 4. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) maxilliped and detail of the endite showing different types of serrate setae (the fan setae were not drawn in the detail); (B–D) pereopods I, II and VII. Scales: (A) 0.05 mm; (B–D) 0.1 mm. C and D share the same scale bar." captionText-3="Figure 5. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) pleotelson in ventral view; (B–E) pleopods II-V; (F) uropod. Scales: (A, B) 0.2 mm; (C–E) 0.1 mm; (F) 0.05 mm." captionText-4="Figure 6. Meridiosignum undulatum n. sp. SEM photographs. Paratype brooding ♀ (MACN- In 37528-b). (A, B) habitus in dorsal and lateral views; (C) pleotelson in dorsal view; (D) uropod; (E) detail of pereonites 5–7 in lateral view, arrows point coxal plates. Scales: (A, B) 0.2 mm; (C, E) 0.1 mm; (D) 0.02 mm. A and B share the same scale bar." figureDoi-0="http://doi.org/10.5281/zenodo.5216293" figureDoi-1="http://doi.org/10.5281/zenodo.5216295" figureDoi-2="http://doi.org/10.5281/zenodo.5216297" figureDoi-3="http://doi.org/10.5281/zenodo.5216299" figureDoi-4="http://doi.org/10.5281/zenodo.5216301" httpUri-0="https://zenodo.org/record/5216293/files/figure.png" httpUri-1="https://zenodo.org/record/5216295/files/figure.png" httpUri-2="https://zenodo.org/record/5216297/files/figure.png" httpUri-3="https://zenodo.org/record/5216299/files/figure.png" httpUri-4="https://zenodo.org/record/5216301/files/figure.png" pageId="2" pageNumber="1116">Figures 2–6</figureCitation>
)
</paragraph>
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<paragraph id="716E369BFF86FF99FF30568EC993F99F" blockId="3.[213,1170,1465,1546]" pageId="3" pageNumber="1117">
Figure 1. Distribution of the South American species of the genus 
<taxonomicName id="B6D14D18FF86FF99FC79568DCC78FA5A" authorityName="Just and Wilson" authorityYear="2007" box="[924,1074,1466,1487]" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="3" pageNumber="1117" phylum="Arthropoda" rank="genus">
<emphasis id="43A5EA89FF86FF99FC79568DCC78FA5A" box="[924,1074,1466,1487]" italics="true" pageId="3" pageNumber="1117">Meridiosignum</emphasis>
</taxonomicName>
: (Z) 
<taxonomicName id="B6D14D18FF86FF99FB96568DC974FA79" authority="Doti &amp; Roccatagliata, 2009" authorityName="Doti &amp; Roccatagliata" authorityYear="2009" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="3" pageNumber="1117" phylum="Arthropoda" rank="species" species="undulatum" status="sp. nov.">
<emphasis id="43A5EA89FF86FF99FB96568DC974FA79" italics="true" pageId="3" pageNumber="1117">M. undulatum</emphasis>
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<taxonomicNameLabel id="589657F2FF86FF99FEA356E0C9CBFA78" box="[326,385,1495,1517]" pageId="3" pageNumber="1117" rank="species">n. sp.</taxonomicNameLabel>
; (O) 
<taxonomicName id="B6D14D18FF86FF99FE5B56E0CA24FA79" authority="Doti &amp; Roccatagliata, 2009" authorityName="Doti &amp; Roccatagliata" authorityYear="2009" box="[446,622,1495,1516]" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="3" pageNumber="1117" phylum="Arthropoda" rank="species" species="disparitergum" status="sp. nov.">
<emphasis id="43A5EA89FF86FF99FE5B56E0CA24FA79" box="[446,622,1495,1516]" italics="true" pageId="3" pageNumber="1117">M. disparitergum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="589657F2FF86FF99FD9356E0CAF8FA78" box="[630,690,1495,1517]" pageId="3" pageNumber="1117" rank="species">n. sp.</taxonomicNameLabel>
; (
<emphasis id="43A5EA89FF86FF99FD2356EECA90FA79" bold="true" box="[710,730,1497,1516]" pageId="3" pageNumber="1117">m</emphasis>
) previous records; (
<emphasis id="43A5EA89FF86FF99FC4956EECB8AFA79" bold="true" box="[940,960,1497,1516]" pageId="3" pageNumber="1117">n</emphasis>
) new records of 
<taxonomicName id="B6D14D18FF86FF99FB9656E0C99FF99F" authority="(Winkler, 1994)" baseAuthorityName="Winkler" baseAuthorityYear="1994" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="3" pageNumber="1117" phylum="Arthropoda" rank="species" species="menziesi">
<emphasis id="43A5EA89FF86FF99FB9656E0C963F99C" italics="true" pageId="3" pageNumber="1117">M. menziesi</emphasis>
(
<bibRefCitation id="15404B6AFF86FF99FED256C3C984F99F" author="Winkler H" box="[311,462,1524,1546]" pageId="3" pageNumber="1117" pagination="243 - 296" refId="ref8446" refString="Winkler H. 1994. Paramunnidae (Crustacea: Isopoda: Asellota) from the Magellan Strait. Zool J Linn Soc. 110: 243 - 296." type="journal article" year="1994">Winkler, 1994</bibRefCitation>
)
</taxonomicName>
.
</paragraph>
</caption>
<paragraph id="716E369BFF86FF99FF30557DC9E3F9F7" blockId="3.[213,425,1610,1634]" box="[213,425,1610,1634]" pageId="3" pageNumber="1117">
<emphasis id="43A5EA89FF86FF99FF30557DC9E3F9F7" box="[213,425,1610,1634]" italics="true" pageId="3" pageNumber="1117">Material examined</emphasis>
</paragraph>
<paragraph id="716E369BFF86FF99FF305545CCDBF93F" blockId="3.[213,1169,1649,1706]" pageId="3" pageNumber="1117">
<materialsCitation id="C1B93CC6FF86FF99FF305545CCDBF93F" collectionCode="R, V" collectorName="Aldebaran &amp; Sta. &amp; Rio de la Plata &amp; Nov" elevation="129" latitude="-36.778168" longLatPrecision="11" longitude="-54.2465" pageId="3" pageNumber="1117" specimenCode="R1" specimenCount="1" specimenCount-female="1" typeStatus="holotype">
<typeStatus id="AE6A8839FF86FF99FF305545C90EF91F" box="[213,324,1650,1674]" pageId="3" pageNumber="1117" type="holotype">Holotype</typeStatus>
: brooding 
<specimenCount id="67D7FD12FF86FF99FE245546C985F91F" box="[449,463,1649,1674]" pageId="3" pageNumber="1117" type="female">♀</specimenCount>
(MACN-In 37527), 
<collectionCode id="17C0AE5EFF86FF99FD255545CA99F91F" box="[704,723,1650,1674]" country="Chile" name="Departamento de Geologia, Universidad de Chile" pageId="3" pageNumber="1117">R</collectionCode>
/ 
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<emphasis id="43A5EA89FF86FF99FD1D5544CB21F91E" box="[760,875,1651,1675]" italics="true" pageId="3" pageNumber="1117">
<collectorName id="DC24534DFF86FF99FD1D5544CB21F91E" box="[760,875,1651,1675]" pageId="3" pageNumber="1117">Aldebarán</collectorName>
</emphasis>
2003-02, 
<collectorName id="DC24534DFF86FF99FC385545CC43F91F" box="[989,1033,1650,1674]" pageId="3" pageNumber="1117">Sta.</collectorName>
<specimenCode id="21779EE0FF86FF99FBF75545CC7CF91F" box="[1042,1078,1650,1674]" collectionCode="R" country="Chile" name="Departamento de Geologia, Universidad de Chile" pageId="3" pageNumber="1117">R1</specimenCode>
; off the 
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estuary; 
<geoCoordinate id="14E5505CFF86FF99FE0055A5CA19F93F" box="[485,595,1682,1706]" degrees="36" direction="south" minutes="46.99" orientation="latitude" pageId="3" pageNumber="1117" precision="9" value="-36.783165">
36 
<emphasis id="43A5EA89FF86FF99FE1A55A5CA43F93F" bold="true" box="[511,521,1682,1706]" italics="true" pageId="3" pageNumber="1117">°</emphasis>
46.99S
</geoCoordinate>
, 
<geoCoordinate id="14E5505CFF86FF99FDBA55A5CA9CF93F" box="[607,726,1682,1706]" degrees="54" direction="west" minutes="15.29" orientation="longitude" pageId="3" pageNumber="1117" precision="9" value="-54.254833">
54 
<emphasis id="43A5EA89FF86FF99FD9C55A5CAC9F93F" bold="true" box="[633,643,1682,1706]" italics="true" pageId="3" pageNumber="1117">°</emphasis>
15.29W
</geoCoordinate>
to 
<geoCoordinate id="14E5505CFF86FF99FD1E55A5CB23F93F" box="[763,873,1682,1706]" degrees="36" direction="south" minutes="46.69" orientation="latitude" pageId="3" pageNumber="1117" precision="9" value="-36.778168">
36 
<emphasis id="43A5EA89FF86FF99FCF355A5CB6AF93F" bold="true" box="[790,800,1682,1706]" italics="true" pageId="3" pageNumber="1117">°</emphasis>
46.69S
</geoCoordinate>
, 
<geoCoordinate id="14E5505CFF86FF99FC9055A5CBA5F93F" box="[885,1007,1682,1706]" degrees="54" direction="west" minutes="14.79" orientation="longitude" pageId="3" pageNumber="1117" precision="9" value="-54.2465">
54 
<emphasis id="43A5EA89FF86FF99FC7555A5CBD0F93F" bold="true" box="[912,922,1682,1706]" italics="true" pageId="3" pageNumber="1117">°</emphasis>
14.79W
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; 
<quantity id="B6299B7EFF86FF99FC1F55A5CC0AF93F" box="[1018,1088,1682,1706]" metricMagnitude="2" metricUnit="m" metricValue="1.29" pageId="3" pageNumber="1117" unit="m" value="129.0">
<elevation id="FAFCD1A8FF86FF99FC1F55A5CC0AF93F" box="[1018,1088,1682,1706]" metricMagnitude="2" metricUnit="m" metricValue="1.29" pageId="3" pageNumber="1117" unit="m" value="129.0">129 m</elevation>
</quantity>
, 6 
<collectorName id="DC24534DFF86FF99FBBA55A5CCDBF93F" box="[1119,1169,1682,1706]" pageId="3" pageNumber="1117">Nov</collectorName>
</materialsCitation>
</paragraph>
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Figure 2. 
<taxonomicName id="B6D14D18FF81FF9EFEE5566FCA46FAF8" authority="Doti &amp; Roccatagliata, 2009" authorityName="Doti &amp; Roccatagliata" authorityYear="2009" box="[256,524,1368,1389]" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="4" pageNumber="1118" phylum="Arthropoda" rank="species" species="undulatum" status="sp. nov.">
<emphasis id="43A5EA89FF81FF9EFEE5566FCA46FAF8" box="[256,524,1368,1389]" italics="true" pageId="4" pageNumber="1118">Meridiosignum undulatum</emphasis>
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<taxonomicNameLabel id="589657F2FF81FF9EFDFC566FCA1DFAFB" box="[537,599,1368,1390]" pageId="4" pageNumber="1118" rank="species">n. sp.</taxonomicNameLabel>
Holotype brooding ♀ (MACN-In 37527). (A) habitus in lateral view; (B) habitus in dorsal view and detail of the surface reticulate pattern; (C) head in ventral view. Scales: (A, B) 0.5 mm; (C) 0.2 mm.
</paragraph>
</caption>
<paragraph id="716E369BFF81FF9EFF7756E4CA7FF999" blockId="4.[146,1103,1490,1548]" pageId="4" pageNumber="1118">
<materialsCitation id="C1B93CC6FF81FF9EFF7756E4CA7BF999" collectionCode="MNHNM" collectorName="Aldebaran &amp; Sta. &amp; Rio de la Plata &amp; Nov" elevation="129" latitude="-36.778168" longLatPrecision="11" longitude="-54.2465" pageId="4" pageNumber="1118" specimenCode="MNHNM 1804" specimenCount="2" specimenCount-female="2" typeStatus="paratype">
2003. 
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(same data as for holotype): 10 brooding 
<specimenCount id="67D7FD12FF81FF9EFCC056E5CB0BFA7E" box="[805,833,1490,1515]" pageId="4" pageNumber="1118" type="female">♀♀</specimenCount>
and 3 non-brooding 
<specimenCount id="67D7FD12FF81FF9EFBD656E5CC05FA7E" box="[1075,1103,1490,1515]" pageId="4" pageNumber="1118" type="female">♀♀</specimenCount>
(MACN-In 37528, 
<specimenCode id="21779EE0FF81FF9EFE9556C3CA63F999" box="[368,553,1524,1548]" collectionCode="MNHNM" country="Mexico" httpUri="http://grbio.org/cool/nctz-br8x" name="Museo Nacional de Historia Natural, Mexico City" pageId="4" pageNumber="1118">MNHNM 1804</specimenCode>
)
</materialsCitation>
.
</paragraph>
<paragraph id="716E369BFF81FF9EFF775572C8B5F9C8" blockId="4.[146,255,1605,1629]" box="[146,255,1605,1629]" pageId="4" pageNumber="1118">
<emphasis id="43A5EA89FF81FF9EFF775572C8B5F9C8" box="[146,255,1605,1629]" italics="true" pageId="4" pageNumber="1118">Diagnosis</emphasis>
</paragraph>
<paragraph id="716E369BFF81FF9FFF77555ACC3EF998" blockId="4.[146,1103,1645,1702]" lastBlockId="5.[213,1169,1427,1549]" lastPageId="5" lastPageNumber="1119" pageId="4" pageNumber="1118">Head anterior margin nearly straight. Eyestalk with red spherical body (photoreceptive pigment?). Pereonites 1 and 4–7 lateral margins produced into single processes, pereonites 2 and 3 lateral margins bilobed. Coxal plates 5–7 rounded. Pleotelson lateral margins with 12–14 small denticles. Pereopod I propodus with one robust seta on ventral margin. Pereopod II carpus without robust setae, propodus with one robust seta on ventral margin. Uropod exopod with one terminal simple seta.</paragraph>
<caption id="25AE6613FF80FF9FFF305639CAC2FAE9" ID-DOI="http://doi.org/10.5281/zenodo.5216295" ID-Zenodo-Dep="5216295" httpUri="https://zenodo.org/record/5216295/files/figure.png" pageId="5" pageNumber="1119" startId="5.[213,280,1294,1316]" targetBox="[216,1170,169,1256]" targetPageId="5">
<paragraph id="716E369BFF80FF9FFF305639CAC2FAE9" blockId="5.[213,1170,1294,1404]" pageId="5" pageNumber="1119">
Figure 3. 
<taxonomicName id="B6D14D18FF80FF9FFEA45638CA06FAB1" authority="Doti &amp; Roccatagliata, 2009" authorityName="Doti &amp; Roccatagliata" authorityYear="2009" box="[321,588,1295,1316]" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="5" pageNumber="1119" phylum="Arthropoda" rank="species" species="undulatum" status="sp. nov.">
<emphasis id="43A5EA89FF80FF9FFEA45638CA06FAB1" box="[321,588,1295,1316]" italics="true" pageId="5" pageNumber="1119">Meridiosignum undulatum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="589657F2FF80FF9FFDB25639CAD9FAB1" box="[599,659,1294,1316]" pageId="5" pageNumber="1119" rank="species">n. sp.</taxonomicNameLabel>
Paratype brooding ♀ (MACN-In 37528-a). (A) antennula; (B) antenna; (C) right mandible; (D) detail of molar process of right mandible of another specimen; (E) left mandible, detail of the incisor process; (F) maxilulla; (G) maxilla. Scales: (A, B) 0.1 mm; (C, F, G) 0.05 mm.
</paragraph>
</caption>
<paragraph id="716E369BFF80FF9FFF305571CA65F9CB" blockId="5.[213,559,1606,1630]" box="[213,559,1606,1630]" pageId="5" pageNumber="1119">
<emphasis id="43A5EA89FF80FF9FFF305571CA65F9CB" box="[213,559,1606,1630]" italics="true" pageId="5" pageNumber="1119">Description of brooding female</emphasis>
</paragraph>
<paragraph id="716E369BFF80FF9DFF305559CB7AFAD6" blockId="5.[213,1169,1646,1703]" lastBlockId="7.[213,1169,1194,1705]" lastPageId="7" lastPageNumber="1121" pageId="5" pageNumber="1119">
(Body description based on the 
<typeStatus id="AE6A8839FF80FF9FFDAB5559CAFFF913" box="[590,693,1646,1670]" pageId="5" pageNumber="1119" type="holotype">holotype</typeStatus>
, appendages on the 
<typeStatus id="AE6A8839FF80FF9FFC4C5559CC47F913" box="[937,1037,1646,1670]" pageId="5" pageNumber="1119" type="paratype">paratype</typeStatus>
MACN-In 37528-a). Length: 
<quantity id="B6299B7EFF80FF9FFE5655B8CA59F932" box="[435,531,1679,1703]" metricMagnitude="-3" metricUnit="m" metricValue="1.46" pageId="5" pageNumber="1119" unit="mm" value="1.46">1.46 mm</quantity>
(
<figureCitation id="E9EA2A1EFF80FF9FFDCC55B8CA99F932" box="[553,723,1679,1703]" captionStart="Figure 2" captionStartId="4.[146,213,1368,1390]" captionTargetBox="[147,1098,169,1330]" captionTargetId="figure-42@4.[146,1104,165,1331]" captionTargetPageId="4" captionText="Figure 2. Meridiosignum undulatum n. sp. Holotype brooding ♀ (MACN-In 37527). (A) habitus in lateral view; (B) habitus in dorsal view and detail of the surface reticulate pattern; (C) head in ventral view. Scales: (A, B) 0.5 mm; (C) 0.2 mm." figureDoi="http://doi.org/10.5281/zenodo.5216293" httpUri="https://zenodo.org/record/5216293/files/figure.png" pageId="5" pageNumber="1119">Figure 2A, 2B</figureCitation>
). Body width 0.61 length, widest at pereonite 3. Head length 0.37×width, anterior margin nearly straight and smooth, labrum slightly surpassing head anteriorly (
<figureCitation id="E9EA2A1EFF83FF9CFD665579CB64F9F3" box="[643,814,1614,1638]" captionStart="Figure 2" captionStartId="4.[146,213,1368,1390]" captionTargetBox="[147,1098,169,1330]" captionTargetId="figure-42@4.[146,1104,165,1331]" captionTargetPageId="4" captionText="Figure 2. Meridiosignum undulatum n. sp. Holotype brooding ♀ (MACN-In 37527). (A) habitus in lateral view; (B) habitus in dorsal view and detail of the surface reticulate pattern; (C) head in ventral view. Scales: (A, B) 0.5 mm; (C) 0.2 mm." figureDoi="http://doi.org/10.5281/zenodo.5216293" httpUri="https://zenodo.org/record/5216293/files/figure.png" pageId="6" pageNumber="1120">Figures 2B, 2C</figureCitation>
, 
<figureCitation id="E9EA2A1EFF83FF9CFCDE5579CB2BF9F3" box="[827,865,1614,1638]" captionStart="Figure 6" captionStartId="8.[146,213,917,939]" captionTargetBox="[146,1104,165,880]" captionTargetId="figure-249@8.[146,1104,165,880]" captionTargetPageId="8" captionText="Figure 6. Meridiosignum undulatum n. sp. SEM photographs. Paratype brooding ♀ (MACN- In 37528-b). (A, B) habitus in dorsal and lateral views; (C) pleotelson in dorsal view; (D) uropod; (E) detail of pereonites 5–7 in lateral view, arrows point coxal plates. Scales: (A, B) 0.2 mm; (C, E) 0.1 mm; (D) 0.02 mm. A and B share the same scale bar." figureDoi="http://doi.org/10.5281/zenodo.5216301" httpUri="https://zenodo.org/record/5216301/files/figure.png" pageId="6" pageNumber="1120">6A</figureCitation>
). Eyestalks long axis angling forward at approximately 30 
<emphasis id="43A5EA89FF83FF9CFDBE5559CA2FF913" bold="true" box="[603,613,1646,1670]" italics="true" pageId="6" pageNumber="1120">°</emphasis>
; with red pigment, no specimens with noticeable ommatidia. Pereonites 1 and 4–7 lateral margins with single processes, pereonites 2 and 3 lateral margins bilobed (
<figureCitation id="E9EA2A1EFF82FF9DFD2D579DCB3CFB57" box="[712,886,1194,1218]" captionStart="Figure 2" captionStartId="4.[146,213,1368,1390]" captionTargetBox="[147,1098,169,1330]" captionTargetId="figure-42@4.[146,1104,165,1331]" captionTargetPageId="4" captionText="Figure 2. Meridiosignum undulatum n. sp. Holotype brooding ♀ (MACN-In 37527). (A) habitus in lateral view; (B) habitus in dorsal view and detail of the surface reticulate pattern; (C) head in ventral view. Scales: (A, B) 0.5 mm; (C) 0.2 mm." figureDoi="http://doi.org/10.5281/zenodo.5216293" httpUri="https://zenodo.org/record/5216293/files/figure.png" pageId="7" pageNumber="1121">Figures 2A, 2B</figureCitation>
, 
<figureCitation id="E9EA2A1EFF82FF9DFC66579DCB9DFB57" box="[899,983,1194,1218]" captionStart="Figure 6" captionStartId="8.[146,213,917,939]" captionTargetBox="[146,1104,165,880]" captionTargetId="figure-249@8.[146,1104,165,880]" captionTargetPageId="8" captionText="Figure 6. Meridiosignum undulatum n. sp. SEM photographs. Paratype brooding ♀ (MACN- In 37528-b). (A, B) habitus in dorsal and lateral views; (C) pleotelson in dorsal view; (D) uropod; (E) detail of pereonites 5–7 in lateral view, arrows point coxal plates. Scales: (A, B) 0.2 mm; (C, E) 0.1 mm; (D) 0.02 mm. A and B share the same scale bar." figureDoi="http://doi.org/10.5281/zenodo.5216301" httpUri="https://zenodo.org/record/5216301/files/figure.png" pageId="7" pageNumber="1121">6A, 6B</figureCitation>
). Pereonites 1–4 increasing in length backwards (relative length ratios 1.0:2.2:2.5:3.0), pereonites 5–7 equal to or slightly longer than pereonite 1. Coxal plates rounded, visible in dorsal view on pereonites 5–7 only (
<figureCitation id="E9EA2A1EFF82FF9DFDC6563CCAEAFAB6" box="[547,672,1291,1315]" captionStart="Figure 2" captionStartId="4.[146,213,1368,1390]" captionTargetBox="[147,1098,169,1330]" captionTargetId="figure-42@4.[146,1104,165,1331]" captionTargetPageId="4" captionText="Figure 2. Meridiosignum undulatum n. sp. Holotype brooding ♀ (MACN-In 37527). (A) habitus in lateral view; (B) habitus in dorsal view and detail of the surface reticulate pattern; (C) head in ventral view. Scales: (A, B) 0.5 mm; (C) 0.2 mm." figureDoi="http://doi.org/10.5281/zenodo.5216293" httpUri="https://zenodo.org/record/5216293/files/figure.png" pageId="7" pageNumber="1121">Figures 2B</figureCitation>
, 
<figureCitation id="E9EA2A1EFF82FF9DFD49563CCA85FAB6" box="[684,719,1291,1315]" captionStart="Figure 6" captionStartId="8.[146,213,917,939]" captionTargetBox="[146,1104,165,880]" captionTargetId="figure-249@8.[146,1104,165,880]" captionTargetPageId="8" captionText="Figure 6. Meridiosignum undulatum n. sp. SEM photographs. Paratype brooding ♀ (MACN- In 37528-b). (A, B) habitus in dorsal and lateral views; (C) pleotelson in dorsal view; (D) uropod; (E) detail of pereonites 5–7 in lateral view, arrows point coxal plates. Scales: (A, B) 0.2 mm; (C, E) 0.1 mm; (D) 0.02 mm. A and B share the same scale bar." figureDoi="http://doi.org/10.5281/zenodo.5216301" httpUri="https://zenodo.org/record/5216301/files/figure.png" pageId="7" pageNumber="1121">6E</figureCitation>
). Pleotelson width 0.78×length, lateral margins with 12–14 small denticles (
<figureCitation id="E9EA2A1EFF82FF9DFD93561CCAB8FAD6" box="[630,754,1323,1347]" captionStart="Figure 2" captionStartId="4.[146,213,1368,1390]" captionTargetBox="[147,1098,169,1330]" captionTargetId="figure-42@4.[146,1104,165,1331]" captionTargetPageId="4" captionText="Figure 2. Meridiosignum undulatum n. sp. Holotype brooding ♀ (MACN-In 37527). (A) habitus in lateral view; (B) habitus in dorsal view and detail of the surface reticulate pattern; (C) head in ventral view. Scales: (A, B) 0.5 mm; (C) 0.2 mm." figureDoi="http://doi.org/10.5281/zenodo.5216293" httpUri="https://zenodo.org/record/5216293/files/figure.png" pageId="7" pageNumber="1121">Figures 2B</figureCitation>
, 
<figureCitation id="E9EA2A1EFF82FF9DFCE5561CCB69FAD6" box="[768,803,1323,1347]" captionStart="Figure 6" captionStartId="8.[146,213,917,939]" captionTargetBox="[146,1104,165,880]" captionTargetId="figure-249@8.[146,1104,165,880]" captionTargetPageId="8" captionText="Figure 6. Meridiosignum undulatum n. sp. SEM photographs. Paratype brooding ♀ (MACN- In 37528-b). (A, B) habitus in dorsal and lateral views; (C) pleotelson in dorsal view; (D) uropod; (E) detail of pereonites 5–7 in lateral view, arrows point coxal plates. Scales: (A, B) 0.2 mm; (C, E) 0.1 mm; (D) 0.02 mm. A and B share the same scale bar." figureDoi="http://doi.org/10.5281/zenodo.5216301" httpUri="https://zenodo.org/record/5216301/files/figure.png" pageId="7" pageNumber="1121">6C</figureCitation>
).
</paragraph>
<caption id="25AE6613FF83FF9CFF77564AC995FA7F" ID-DOI="http://doi.org/10.5281/zenodo.5216297" ID-Zenodo-Dep="5216297" httpUri="https://zenodo.org/record/5216297/files/figure.png" pageId="6" pageNumber="1120" startId="6.[146,213,1405,1427]" targetBox="[154,1101,170,1360]" targetPageId="6">
<paragraph id="716E369BFF83FF9CFF77564AC995FA7F" blockId="6.[146,1102,1404,1514]" pageId="6" pageNumber="1120">
Figure 4. 
<taxonomicName id="B6D14D18FF83FF9CFF1B564ACA4DFA07" authority="Doti &amp; Roccatagliata, 2009" authorityName="Doti &amp; Roccatagliata" authorityYear="2009" box="[254,519,1405,1426]" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="6" pageNumber="1120" phylum="Arthropoda" rank="species" species="undulatum" status="sp. nov.">
<emphasis id="43A5EA89FF83FF9CFF1B564ACA4DFA07" box="[254,519,1405,1426]" italics="true" pageId="6" pageNumber="1120">Meridiosignum undulatum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="589657F2FF83FF9CFDF4564ACA06FA06" box="[529,588,1405,1427]" pageId="6" pageNumber="1120" rank="species">n. sp.</taxonomicNameLabel>
Paratype brooding ♀ (MACN-In 37528-a). (A) maxilliped and detail of the endite showing different types of serrate setae (the fan setae were not drawn in the detail); (B–D) pereopods I, II and VII. Scales: (A) 0.05 mm; (B–D) 0.1 mm. C and D share the same scale bar.
</paragraph>
</caption>
<caption id="25AE6613FF82FF9DFF305707C9BCFB15" ID-DOI="http://doi.org/10.5281/zenodo.5216299" ID-Zenodo-Dep="5216299" httpUri="https://zenodo.org/record/5216299/files/figure.png" pageId="7" pageNumber="1121" startId="7.[213,280,1072,1094]" targetBox="[213,1169,168,1031]" targetPageId="7">
<paragraph id="716E369BFF82FF9DFF305707C9BCFB15" blockId="7.[213,1170,1071,1152]" pageId="7" pageNumber="1121">
Figure 5. 
<taxonomicName id="B6D14D18FF82FF9DFEA35707CA1CFBD0" authority="Doti &amp; Roccatagliata, 2009" authorityName="Doti &amp; Roccatagliata" authorityYear="2009" box="[326,598,1072,1093]" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="7" pageNumber="1121" phylum="Arthropoda" rank="species" species="undulatum" status="sp. nov.">
<emphasis id="43A5EA89FF82FF9DFEA35707CA1CFBD0" box="[326,598,1072,1093]" italics="true" pageId="7" pageNumber="1121">Meridiosignum undulatum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="589657F2FF82FF9DFD835707CAEDFBD3" box="[614,679,1072,1094]" pageId="7" pageNumber="1121" rank="species">n. sp.</taxonomicNameLabel>
Paratype brooding ♀ (MACN-In 37528-a). (A) pleotelson in ventral view; (B–E) pleopods II-V; (F) uropod. Scales: (A, B) 0.2 mm; (C–E) 0.1 mm; (F) 0.05 mm.
</paragraph>
</caption>
<paragraph id="716E369BFF82FF9DFF1A567BC92CF993" blockId="7.[213,1169,1194,1705]" pageId="7" pageNumber="1121">
Antennula (
<figureCitation id="E9EA2A1EFF82FF9DFE6C567BC9B4FAF1" box="[393,510,1356,1380]" captionStart="Figure 3" captionStartId="5.[213,280,1294,1316]" captionTargetBox="[216,1170,169,1256]" captionTargetId="figure-79@5.[213,1171,165,1258]" captionTargetPageId="5" captionText="Figure 3. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) antennula; (B) antenna; (C) right mandible; (D) detail of molar process of right mandible of another specimen; (E) left mandible, detail of the incisor process; (F) maxilulla; (G) maxilla. Scales: (A, B) 0.1 mm; (C, F, G) 0.05 mm." figureDoi="http://doi.org/10.5281/zenodo.5216295" httpUri="https://zenodo.org/record/5216295/files/figure.png" pageId="7" pageNumber="1121">Figure 3A</figureCitation>
), article 1 length 0.68×article 2 length, with one broom and two simple setae; article 2 longest, approximately as long as articles 4–6 combined, with four broom and three simple setae; article 3 length 0.4×article 2 length, with one simple seta; article 4 shortest, with one broom and one simple setae; article 5 glabrous; article 6 subequal to 5, with one aesthetasc, one broom and five simple setae.
</paragraph>
<paragraph id="716E369BFF82FF9DFF1A5538CA93F93C" blockId="7.[213,1169,1194,1705]" pageId="7" pageNumber="1121">
Antenna (
<figureCitation id="E9EA2A1EFF82FF9DFE945538C9A9F9B2" box="[369,483,1551,1575]" captionStart="Figure 3" captionStartId="5.[213,280,1294,1316]" captionTargetBox="[216,1170,169,1256]" captionTargetId="figure-79@5.[213,1171,165,1258]" captionTargetPageId="5" captionText="Figure 3. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) antennula; (B) antenna; (C) right mandible; (D) detail of molar process of right mandible of another specimen; (E) left mandible, detail of the incisor process; (F) maxilulla; (G) maxilla. Scales: (A, B) 0.1 mm; (C, F, G) 0.05 mm." figureDoi="http://doi.org/10.5281/zenodo.5216295" httpUri="https://zenodo.org/record/5216295/files/figure.png" pageId="7" pageNumber="1121">Figure 3B</figureCitation>
), articles 1 and 2 glabrous, article 2 with two small teeth on lateral margin, article 3 subequal in length to article 5, with five simple setae (most distal one on process); article 4 with two simple setae; article 5 length 0.88×article 6 length, with two broom and three simple setae; article 6 longest, with five broom and four simple setae; flagellum of seven articles.
</paragraph>
<caption id="25AE6613FF8DFF92FF7750A2CB37FB97" ID-DOI="http://doi.org/10.5281/zenodo.5216301" ID-Zenodo-Dep="5216301" httpUri="https://zenodo.org/record/5216301/files/figure.png" pageId="8" pageNumber="1122" startId="8.[146,213,917,939]" targetBox="[146,1104,165,880]" targetPageId="8">
<paragraph id="716E369BFF8DFF92FF7750A2CB37FB97" blockId="8.[146,1103,916,1026]" pageId="8" pageNumber="1122">
Figure 6. 
<taxonomicName id="B6D14D18FF8DFF92FF1E50A2CA48FC3F" authority="Doti &amp; Roccatagliata, 2009" authorityName="Doti &amp; Roccatagliata" authorityYear="2009" box="[251,514,917,938]" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="8" pageNumber="1122" phylum="Arthropoda" rank="species" species="undulatum" status="sp. nov.">
<emphasis id="43A5EA89FF8DFF92FF1E50A2CA48FC3F" box="[251,514,917,938]" italics="true" pageId="8" pageNumber="1122">Meridiosignum undulatum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="589657F2FF8DFF92FDEC50A2CA0BFC3E" box="[521,577,917,939]" pageId="8" pageNumber="1122" rank="species">n. sp.</taxonomicNameLabel>
SEM photographs. Paratype brooding ♀ (MACN- In 37528-b). (A, B) habitus in dorsal and lateral views; (C) pleotelson in dorsal view; (D) uropod; (E) detail of pereonites 5–7 in lateral view, arrows point coxal plates. Scales: (A, B) 0.2 mm; (C, E) 0.1 mm; (D) 0.02 mm. A and B share the same scale bar.
</paragraph>
</caption>
<paragraph id="716E369BFF8DFF92FF58571AC96DFB70" blockId="8.[146,1103,1069,1706]" pageId="8" pageNumber="1122">
Right mandible (
<figureCitation id="E9EA2A1EFF8DFF92FE9A571ACA6FFBD0" box="[383,549,1069,1093]" captionStart="Figure 3" captionStartId="5.[213,280,1294,1316]" captionTargetBox="[216,1170,169,1256]" captionTargetId="figure-79@5.[213,1171,165,1258]" captionTargetPageId="5" captionText="Figure 3. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) antennula; (B) antenna; (C) right mandible; (D) detail of molar process of right mandible of another specimen; (E) left mandible, detail of the incisor process; (F) maxilulla; (G) maxilla. Scales: (A, B) 0.1 mm; (C, F, G) 0.05 mm." figureDoi="http://doi.org/10.5281/zenodo.5216295" httpUri="https://zenodo.org/record/5216295/files/figure.png" pageId="8" pageNumber="1122">Figure 3C, 3D</figureCitation>
), incisor process with five blunt cusps; setal row with five setae; molar process with one row of teeth and two setae on distal edge, and one accessory row of teeth and one cuticular comb close to distal edge. Left mandible (
<figureCitation id="E9EA2A1EFF8DFF92FF7F57BAC940FB30" box="[154,266,1165,1189]" captionStart="Figure 3" captionStartId="5.[213,280,1294,1316]" captionTargetBox="[216,1170,169,1256]" captionTargetId="figure-79@5.[213,1171,165,1258]" captionTargetPageId="5" captionText="Figure 3. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) antennula; (B) antenna; (C) right mandible; (D) detail of molar process of right mandible of another specimen; (E) left mandible, detail of the incisor process; (F) maxilulla; (G) maxilla. Scales: (A, B) 0.1 mm; (C, F, G) 0.05 mm." figureDoi="http://doi.org/10.5281/zenodo.5216295" httpUri="https://zenodo.org/record/5216295/files/figure.png" pageId="8" pageNumber="1122">Figure 3E</figureCitation>
) as right one except for: incisor process with a four-cusped lacinia mobilis and a setal row of four setae, molar process without distal edge setae and accessory row of teeth.
</paragraph>
<paragraph id="716E369BFF8DFF92FF5857D9CA2CFAD2" blockId="8.[146,1103,1069,1706]" pageId="8" pageNumber="1122">
Maxillula (
<figureCitation id="E9EA2A1EFF8DFF92FEDD57D9C9E0FA93" box="[312,426,1262,1286]" captionStart="Figure 3" captionStartId="5.[213,280,1294,1316]" captionTargetBox="[216,1170,169,1256]" captionTargetId="figure-79@5.[213,1171,165,1258]" captionTargetPageId="5" captionText="Figure 3. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) antennula; (B) antenna; (C) right mandible; (D) detail of molar process of right mandible of another specimen; (E) left mandible, detail of the incisor process; (F) maxilulla; (G) maxilla. Scales: (A, B) 0.1 mm; (C, F, G) 0.05 mm." figureDoi="http://doi.org/10.5281/zenodo.5216295" httpUri="https://zenodo.org/record/5216295/files/figure.png" pageId="8" pageNumber="1122">Figure 3F</figureCitation>
), lateral lobe with one simple seta close to distal margin and 12 cuspidate setae distally; mesial lobe with two short simple setae and three long (two simple?, one setulate) setae distally.
</paragraph>
<paragraph id="716E369BFF8DFF92FF585678CB8DFA3D" blockId="8.[146,1103,1069,1706]" pageId="8" pageNumber="1122">
Maxilla (
<figureCitation id="E9EA2A1EFF8DFF92FEC65678C9D0FAF2" box="[291,410,1359,1383]" captionStart="Figure 3" captionStartId="5.[213,280,1294,1316]" captionTargetBox="[216,1170,169,1256]" captionTargetId="figure-79@5.[213,1171,165,1258]" captionTargetPageId="5" captionText="Figure 3. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) antennula; (B) antenna; (C) right mandible; (D) detail of molar process of right mandible of another specimen; (E) left mandible, detail of the incisor process; (F) maxilulla; (G) maxilla. Scales: (A, B) 0.1 mm; (C, F, G) 0.05 mm." figureDoi="http://doi.org/10.5281/zenodo.5216295" httpUri="https://zenodo.org/record/5216295/files/figure.png" pageId="8" pageNumber="1122">Figure 3G</figureCitation>
), lateral and middle lobe with one pectinate and three simple setae distally; mesial lobe with two pectinate setae and six simple setae (with rounded tip) on distal margin, and two setulate setae on or near medial margin.
</paragraph>
<paragraph id="716E369BFF8DFF92FF585686CAE5F9FC" blockId="8.[146,1103,1069,1706]" pageId="8" pageNumber="1122">
Maxilliped (
<figureCitation id="E9EA2A1EFF8DFF92FEAB5686C98EFA5C" box="[334,452,1457,1481]" captionStart="Figure 4" captionStartId="6.[146,213,1405,1427]" captionTargetBox="[154,1101,170,1360]" captionTargetId="figure-50@6.[146,1104,165,1368]" captionTargetPageId="6" captionText="Figure 4. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) maxilliped and detail of the endite showing different types of serrate setae (the fan setae were not drawn in the detail); (B–D) pereopods I, II and VII. Scales: (A) 0.05 mm; (B–D) 0.1 mm. C and D share the same scale bar." figureDoi="http://doi.org/10.5281/zenodo.5216297" httpUri="https://zenodo.org/record/5216297/files/figure.png" pageId="8" pageNumber="1122">Figure 4A</figureCitation>
), endite with two or three coupling hooks (in other specimens dissected both maxillipeds with two coupling hooks), distal margin with five unequal serrate setae, ventral surface with two fan setae, dorsal surface with two serrate setae (only their insertion points depicted in the detail of 
<figureCitation id="E9EA2A1EFF8DFF92FC765526CC44F9BC" box="[915,1038,1553,1577]" captionStart="Figure 4" captionStartId="6.[146,213,1405,1427]" captionTargetBox="[154,1101,170,1360]" captionTargetId="figure-50@6.[146,1104,165,1368]" captionTargetPageId="6" captionText="Figure 4. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) maxilliped and detail of the endite showing different types of serrate setae (the fan setae were not drawn in the detail); (B–D) pereopods I, II and VII. Scales: (A) 0.05 mm; (B–D) 0.1 mm. C and D share the same scale bar." figureDoi="http://doi.org/10.5281/zenodo.5216297" httpUri="https://zenodo.org/record/5216297/files/figure.png" pageId="8" pageNumber="1122">Figure 4A</figureCitation>
), one large setulate seta, and cuticular combs. Epipod subtriangular, width 0.44×length (0.55× in another brooding female examined).
</paragraph>
<paragraph id="716E369BFF8DFF93FF585545CAFFFE51" blockId="8.[146,1103,1069,1706]" lastBlockId="9.[213,1169,168,1298]" lastPageId="9" lastPageNumber="1123" pageId="8" pageNumber="1122">
Pereopod I (
<figureCitation id="E9EA2A1EFF8DFF92FEB65545C98FF91F" box="[339,453,1650,1674]" captionStart="Figure 4" captionStartId="6.[146,213,1405,1427]" captionTargetBox="[154,1101,170,1360]" captionTargetId="figure-50@6.[146,1104,165,1368]" captionTargetPageId="6" captionText="Figure 4. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) maxilliped and detail of the endite showing different types of serrate setae (the fan setae were not drawn in the detail); (B–D) pereopods I, II and VII. Scales: (A) 0.05 mm; (B–D) 0.1 mm. C and D share the same scale bar." figureDoi="http://doi.org/10.5281/zenodo.5216297" httpUri="https://zenodo.org/record/5216297/files/figure.png" pageId="8" pageNumber="1122">Figure 4B</figureCitation>
), basis longest article with three simple setae. Ischium 0.5×basis length, with three simple setae and one cuticular comb. Merus as long as wide, with six simple setae and two cuticular combs. Carpus 0.9×ischium length; dorsal margin with one simple seta distally; ventral margin with two robust setae, four simple setae and some tooth-like hyaline lamellae; anterior surface with one cuticular comb. Propodus subequal in length to ischium, dorsal margin with four simple setae (one halfway along article and three distal), ventral margin with one robust seta, three simple setae and two hyaline lamellae, anterior surface with one simple seta and several cuticular combs. Dactylus with four simple setae near distal end and two simple setae between unguis and ventral claw, unguis longer than dactylus, ventral claw 0.5×unguis length.
</paragraph>
<paragraph id="716E369BFF8CFF93FF1A52FAC98AFD52" blockId="9.[213,1169,168,1298]" pageId="9" pageNumber="1123">
Pereopod II (
<figureCitation id="E9EA2A1EFF8CFF93FE7952FACA5AFE70" box="[412,528,461,485]" captionStart="Figure 4" captionStartId="6.[146,213,1405,1427]" captionTargetBox="[154,1101,170,1360]" captionTargetId="figure-50@6.[146,1104,165,1368]" captionTargetPageId="6" captionText="Figure 4. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) maxilliped and detail of the endite showing different types of serrate setae (the fan setae were not drawn in the detail); (B–D) pereopods I, II and VII. Scales: (A) 0.05 mm; (B–D) 0.1 mm. C and D share the same scale bar." figureDoi="http://doi.org/10.5281/zenodo.5216297" httpUri="https://zenodo.org/record/5216297/files/figure.png" pageId="9" pageNumber="1123">Figure 4C</figureCitation>
), basis longest article, with three simple setae. Ischium 0.7×basis length, with five simple setae. Merus distodorsal corner with two simple setae, ventral margin with four simple setae. Carpus slightly shorter than ischium, dorsal margin with one broom and two simple setae, ventral margin with four simple setae. Propodus 0.7×ischium length, dorsal margin with one broom and three simple setae, ventral margin with one robust seta and four simple setae. Dactylus, setae arrangement as in pereopod I, unguis longer than dactylus, ventral claw weak, 0.25×unguis length.
</paragraph>
<paragraph id="716E369BFF8CFF93FF1A51E7CAAAFC3E" blockId="9.[213,1169,168,1298]" pageId="9" pageNumber="1123">
Pereopod VII (
<figureCitation id="E9EA2A1EFF8CFF93FE4E51E7CA6AFD7D" box="[427,544,720,744]" captionStart="Figure 4" captionStartId="6.[146,213,1405,1427]" captionTargetBox="[154,1101,170,1360]" captionTargetId="figure-50@6.[146,1104,165,1368]" captionTargetPageId="6" captionText="Figure 4. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) maxilliped and detail of the endite showing different types of serrate setae (the fan setae were not drawn in the detail); (B–D) pereopods I, II and VII. Scales: (A) 0.05 mm; (B–D) 0.1 mm. C and D share the same scale bar." figureDoi="http://doi.org/10.5281/zenodo.5216297" httpUri="https://zenodo.org/record/5216297/files/figure.png" pageId="9" pageNumber="1123">Figure 4D</figureCitation>
), basis longest article, with one broom and two simple setae. Ischium 0.8×basis length, with three simple setae. Merus with two simple setae on each distal corner. Carpus slightly longer than ischium, dorsal margin with one broom and two simple setae, ventral margin with three simple setae. Propodus 0.9×ischium length, distodorsal corner with one broom and two simple setae, ventral margin with one robust seta and three simple setae. Dactylus as in pereopod II except for ventral claw 0.2×unguis length.
</paragraph>
<paragraph id="716E369BFF8CFF93FF1A5083CBDDFC79" blockId="9.[213,1169,168,1298]" pageId="9" pageNumber="1123">
Operculum (
<figureCitation id="E9EA2A1EFF8CFF93FE745083CA7FFC59" box="[401,565,948,972]" captionStart="Figure 5" captionStartId="7.[213,280,1072,1094]" captionTargetBox="[213,1169,168,1031]" captionTargetId="figure-204@7.[213,1171,165,1035]" captionTargetPageId="7" captionText="Figure 5. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) pleotelson in ventral view; (B–E) pleopods II-V; (F) uropod. Scales: (A, B) 0.2 mm; (C–E) 0.1 mm; (F) 0.05 mm." figureDoi="http://doi.org/10.5281/zenodo.5216299" httpUri="https://zenodo.org/record/5216299/files/figure.png" pageId="9" pageNumber="1123">Figure 5A, 5B</figureCitation>
) ovoid, width 0.67×length, with 6 simple setae on ventral surface, 2 at distal end, and many on lateral margins.
</paragraph>
<paragraph id="716E369BFF8CFF93FF1A50C2CAD1FBDB" blockId="9.[213,1169,168,1298]" pageId="9" pageNumber="1123">
Pleopod III (
<figureCitation id="E9EA2A1EFF8CFF93FE7050C2CA42FB98" box="[405,520,1013,1037]" captionStart="Figure 5" captionStartId="7.[213,280,1072,1094]" captionTargetBox="[213,1169,168,1031]" captionTargetId="figure-204@7.[213,1171,165,1035]" captionTargetPageId="7" captionText="Figure 5. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) pleotelson in ventral view; (B–E) pleopods II-V; (F) uropod. Scales: (A, B) 0.2 mm; (C–E) 0.1 mm; (F) 0.05 mm." figureDoi="http://doi.org/10.5281/zenodo.5216299" httpUri="https://zenodo.org/record/5216299/files/figure.png" pageId="9" pageNumber="1123">Figure 5C</figureCitation>
), endopod width 0.62×length, with three plumose setae distally. Exopod articles not fully separated; with one long simple seta, which extends as far as tips of endopod setae.
</paragraph>
<paragraph id="716E369BFF8CFF93FF1A5760CBECFB1A" blockId="9.[213,1169,168,1298]" pageId="9" pageNumber="1123">
Pleopod IV (
<figureCitation id="E9EA2A1EFF8CFF93FE7A5760CA5FFBFA" box="[415,533,1111,1135]" captionStart="Figure 5" captionStartId="7.[213,280,1072,1094]" captionTargetBox="[213,1169,168,1031]" captionTargetId="figure-204@7.[213,1171,165,1035]" captionTargetPageId="7" captionText="Figure 5. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) pleotelson in ventral view; (B–E) pleopods II-V; (F) uropod. Scales: (A, B) 0.2 mm; (C–E) 0.1 mm; (F) 0.05 mm." figureDoi="http://doi.org/10.5281/zenodo.5216299" httpUri="https://zenodo.org/record/5216299/files/figure.png" pageId="9" pageNumber="1123">Figure 5D</figureCitation>
), endopod width 0.39×length, exopod not reaching distal end of endopod, lateral margin with fringe of tiny setae.
</paragraph>
<paragraph id="716E369BFF8CFF93FF1A57AFCA95FB25" blockId="9.[213,1169,168,1298]" box="[255,735,1176,1201]" pageId="9" pageNumber="1123">
Pleopod V (
<figureCitation id="E9EA2A1EFF8CFF93FE6C57AFC9B0FB25" box="[393,506,1176,1200]" captionStart="Figure 5" captionStartId="7.[213,280,1072,1094]" captionTargetBox="[213,1169,168,1031]" captionTargetId="figure-204@7.[213,1171,165,1035]" captionTargetPageId="7" captionText="Figure 5. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) pleotelson in ventral view; (B–E) pleopods II-V; (F) uropod. Scales: (A, B) 0.2 mm; (C–E) 0.1 mm; (F) 0.05 mm." figureDoi="http://doi.org/10.5281/zenodo.5216299" httpUri="https://zenodo.org/record/5216299/files/figure.png" pageId="9" pageNumber="1123">Figure 5E</figureCitation>
) width 0.4×length.
</paragraph>
<paragraph id="716E369BFF8CFF93FF1A578EC964FA87" blockId="9.[213,1169,168,1298]" pageId="9" pageNumber="1123">
Uropod (
<figureCitation id="E9EA2A1EFF8CFF93FE96578EC9A5FB44" box="[371,495,1209,1233]" captionStart="Figure 5" captionStartId="7.[213,280,1072,1094]" captionTargetBox="[213,1169,168,1031]" captionTargetId="figure-204@7.[213,1171,165,1035]" captionTargetPageId="7" captionText="Figure 5. Meridiosignum undulatum n. sp. Paratype brooding ♀ (MACN-In 37528-a). (A) pleotelson in ventral view; (B–E) pleopods II-V; (F) uropod. Scales: (A, B) 0.2 mm; (C–E) 0.1 mm; (F) 0.05 mm." figureDoi="http://doi.org/10.5281/zenodo.5216299" httpUri="https://zenodo.org/record/5216299/files/figure.png" pageId="9" pageNumber="1123">Figures 5F</figureCitation>
, 
<figureCitation id="E9EA2A1EFF8CFF93FDE0578ECA61FB44" box="[517,555,1209,1233]" captionStart="Figure 6" captionStartId="8.[146,213,917,939]" captionTargetBox="[146,1104,165,880]" captionTargetId="figure-249@8.[146,1104,165,880]" captionTargetPageId="8" captionText="Figure 6. Meridiosignum undulatum n. sp. SEM photographs. Paratype brooding ♀ (MACN- In 37528-b). (A, B) habitus in dorsal and lateral views; (C) pleotelson in dorsal view; (D) uropod; (E) detail of pereonites 5–7 in lateral view, arrows point coxal plates. Scales: (A, B) 0.2 mm; (C, E) 0.1 mm; (D) 0.02 mm. A and B share the same scale bar." figureDoi="http://doi.org/10.5281/zenodo.5216301" httpUri="https://zenodo.org/record/5216301/files/figure.png" pageId="9" pageNumber="1123">6D</figureCitation>
), exopod 0.44×endopod length, with one simple seta distally; endopod with three simple setae subapically and six broom setae distally.
</paragraph>
<paragraph id="716E369BFF8CFF93FF305679C91EFAF3" blockId="9.[213,340,1358,1382]" box="[213,340,1358,1382]" pageId="9" pageNumber="1123">
<emphasis id="43A5EA89FF8CFF93FF305679C91EFAF3" box="[213,340,1358,1382]" italics="true" pageId="9" pageNumber="1123">Size ranges</emphasis>
</paragraph>
<paragraph id="716E369BFF8CFF93FF305641CBBBFA1B" blockId="9.[213,1009,1398,1422]" box="[213,1009,1398,1422]" pageId="9" pageNumber="1123">
Non-brooding females: 
<quantity id="B6299B7EFF8CFF93FE025641CA21FA1B" box="[487,619,1398,1422]" metricMagnitude="-3" metricUnit="m" metricValue="1.2999999999999998" metricValueMax="1.4" metricValueMin="1.2" pageId="9" pageNumber="1123" unit="mm" value="1.2999999999999998" valueMax="1.4" valueMin="1.2">1.2–1.4 mm</quantity>
; brooding females: 
<quantity id="B6299B7EFF8CFF93FCAB5641CBA7FA1B" box="[846,1005,1398,1422]" metricMagnitude="-3" metricUnit="m" metricValue="1.265" metricValueMax="1.46" metricValueMin="1.07" pageId="9" pageNumber="1123" unit="mm" value="1.265" valueMax="1.46" valueMin="1.07">1.07–1.46 mm</quantity>
.
</paragraph>
<paragraph id="716E369BFF8CFF93FF3056FDC911FA77" blockId="9.[213,347,1482,1506]" box="[213,347,1482,1506]" pageId="9" pageNumber="1123">
<emphasis id="43A5EA89FF8CFF93FF3056FDC911FA77" box="[213,347,1482,1506]" italics="true" pageId="9" pageNumber="1123">Distribution</emphasis>
</paragraph>
<paragraph id="716E369BFF8CFF93FF3056C4CAAEF99E" blockId="9.[213,740,1523,1547]" box="[213,740,1523,1547]" pageId="9" pageNumber="1123">
Only known from the 
<typeStatus id="AE6A8839FF8CFF93FE3C56C4CA43F99E" box="[473,521,1523,1547]" pageId="9" pageNumber="1123">type</typeStatus>
locality (
<figureCitation id="E9EA2A1EFF8CFF93FD9356C4CA99F99E" box="[630,723,1523,1547]" captionStart="Figure 1" captionStartId="3.[213,280,1465,1487]" captionTargetBox="[215,1171,165,1429]" captionTargetId="figure-48@3.[213,1171,165,1429]" captionTargetPageId="3" captionText="Figure 1. Distribution of the South American species of the genus Meridiosignum: (Z) M. undulatum n. sp.; (O) M. disparitergum n. sp.; (m) previous records; (n) new records of M. menziesi (Winkler, 1994)." figureDoi="http://doi.org/10.5281/zenodo.5216291" httpUri="https://zenodo.org/record/5216291/files/figure.png" pageId="9" pageNumber="1123">Figure 1</figureCitation>
).
</paragraph>
<paragraph id="716E369BFF8CFF93FF305571C904F9CB" blockId="9.[213,334,1606,1630]" box="[213,334,1606,1630]" pageId="9" pageNumber="1123">
<emphasis id="43A5EA89FF8CFF93FF305571C904F9CB" box="[213,334,1606,1630]" italics="true" pageId="9" pageNumber="1123">Etymology</emphasis>
</paragraph>
<paragraph id="716E369BFF8CFF93FF305558CAF4F932" blockId="9.[213,1169,1647,1703]" pageId="9" pageNumber="1123">
The epithet, from the Latin 
<emphasis id="43A5EA89FF8CFF93FDD15558CAD4F912" box="[564,670,1647,1671]" italics="true" pageId="9" pageNumber="1123">undulatus</emphasis>
meaning ‘‘wavy’’, alluding to the lateral bilobed margins of the pereonites 2 and 3.
</paragraph>
<paragraph id="716E369BFF8FFF90FF77539EC8BFFF54" blockId="10.[146,245,169,193]" box="[146,245,169,193]" pageId="10" pageNumber="1124">
<emphasis id="43A5EA89FF8FFF90FF77539EC8BFFF54" box="[146,245,169,193]" italics="true" pageId="10" pageNumber="1124">Remarks</emphasis>
</paragraph>
<paragraph id="716E369BFF8FFF90FF7753E6CB1BFEFF" blockId="10.[146,1103,209,525]" pageId="10" pageNumber="1124">
<taxonomicName id="B6D14D18FF8FFF90FF7753E6C9F1FF7C" authority="Doti &amp; Roccatagliata, 2009" authorityName="Doti &amp; Roccatagliata" authorityYear="2009" box="[146,443,209,233]" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="10" pageNumber="1124" phylum="Arthropoda" rank="species" species="undulatum" status="sp. nov.">
<emphasis id="43A5EA89FF8FFF90FF7753E6C9F1FF7C" box="[146,443,209,233]" italics="true" pageId="10" pageNumber="1124">Meridiosignum undulatum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="589657F2FF8FFF90FE2C53E6CA46FF7C" box="[457,524,209,233]" pageId="10" pageNumber="1124" rank="species">n. sp.</taxonomicNameLabel>
can be easily distinguished from the remaining species of the genus by having the lateral margins of pereonites 1 and 4–7 produced into single processes, and those of pereonites 2 and 3 bilobed. 
<taxonomicName id="B6D14D18FF8FFF90FCB15225CBBBFEBF" authority="Doti &amp; Roccatagliata, 2009" authorityName="Doti &amp; Roccatagliata" authorityYear="2009" box="[852,1009,274,298]" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="10" pageNumber="1124" phylum="Arthropoda" rank="species" species="undulatum" status="sp. nov.">
<emphasis id="43A5EA89FF8FFF90FCB15225CBBBFEBF" box="[852,1009,274,298]" italics="true" pageId="10" pageNumber="1124">M. undulatum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="589657F2FF8FFF90FC1D5225CC7CFEBF" box="[1016,1078,274,298]" pageId="10" pageNumber="1124" rank="species">n. sp.</taxonomicNameLabel>
is most similar to 
<taxonomicName id="B6D14D18FF8FFF90FEB65205CA50FEDF" authority="Doti &amp; Roccatagliata, 2009" authorityName="Doti &amp; Roccatagliata" authorityYear="2009" box="[339,538,306,330]" class="Malacostraca" family="Paramunnidae" genus="Meridiosignum" kingdom="Animalia" order="Isopoda" pageId="10" pageNumber="1124" phylum="Arthropoda" rank="species" species="disparitergum" status="sp. nov.">
<emphasis id="43A5EA89FF8FFF90FEB65205CA50FEDF" box="[339,538,306,330]" italics="true" pageId="10" pageNumber="1124">M. disparitergum</emphasis>
</taxonomicName>
<taxonomicNameLabel id="589657F2FF8FFF90FDC35205CA20FEDF" box="[550,618,306,330]" pageId="10" pageNumber="1124" rank="species">n. sp.</taxonomicNameLabel>
; the main differences between these two species are discussed in the remarks section of the latter one.
</paragraph>
<paragraph id="716E369BFF8FFF90FF585244CAC1FD98" blockId="10.[146,1103,209,525]" pageId="10" pageNumber="1124">
<bibRefCitation id="15404B6AFF8FFF90FF585244C917FE1E" author="Wilson GD" box="[189,349,371,395]" pageId="10" pageNumber="1124" pagination="59 - 120" refId="ref8382" refString="Wilson GD. 1997. The suborder Asellota. In: Blake JA and Scott PH, editors. Taxonomic atlas of the benthic fauna of the Santa Barbara Basin and Western Santa Barbara Channel. Vol. 11, The Crustacea part 2. Santa Barbara (CA): Santa Barbara Museum of Natural History. p. 59 - 120." type="book chapter" year="1997">Wilson (1997)</bibRefCitation>
reported two paramunnid species having some brooding females with fully developed male pleopods (protogynous hermaphroditic forms). Our sample consisted exclusively of 
<specimenCount id="67D7FD12FF8FFF90FDE55283CA33FE59" box="[512,633,436,460]" pageId="10" pageNumber="1124" type="female">14 females</specimenCount>
(11 of which were brooding), and all of them had the characteristic female operculum. Thus, this sample with a skewed sex ratio did not include hermaphroditic forms.
</paragraph>
</subSubSection>
</treatment>
</document>