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<document id="CDB89CF4FDF6D845116CC540F17A120F" ID-DOI="10.11646/zootaxa.5399.1.2" ID-ISSN="1175-5326" ID-Zenodo-Dep="10494421" ID-ZooBank="D5584152-81FD-40BD-8A25-F95EC106CCE8" IM.bibliography_approvedBy="guilherme" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="guilherme" IM.treatments_approvedBy="guilherme" checkinTime="1705013323873" checkinUser="plazi" docAuthor="Mendes, Samuel Lucas Da Silva Delgado, Paiva, Paulo Cesar De &amp; Rizzo, Alexandra E." docDate="2024" docId="03AF1C72DA12FFD5FF53FDA7FE5C3F54" docLanguage="en" docName="zootaxa.5399.1.2.pdf" docOrigin="Zootaxa 5399 (1)" docSource="http://dx.doi.org/10.11646/zootaxa.5399.1.2" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Pseudoscalibregma parapari Mendes &amp; Paiva &amp; Rizzo 2024, sp. nov." docType="treatment" docUuid="5BF234D7-44E7-4B07-A47A-3F89974F64EF" docUuidSource="ZooBank" docVersion="3" lastPageNumber="32" masterDocId="FF96640ADA1BFFD8FFC4F801FD683A37" masterDocTitle="New species of Pseudoscalibregma Ashworth, 1901 (Annelida: Scalibregmatidae Malmgren, 1867) from Brazil" masterLastPageNumber="36" masterPageNumber="19" pageNumber="28" updateTime="1705328484369" updateUser="guilherme" zenodo-license-document="CLOSED">
<mods:mods id="AEA4BB29FB16F87E57F2B03C6AF8B7A0" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="D1E5B39CBC1055E6ED1A9FB70137A556">
<mods:title id="4F1D8A98775686167CE74EDE98FCD952">New species of Pseudoscalibregma Ashworth, 1901 (Annelida: Scalibregmatidae Malmgren, 1867) from Brazil</mods:title>
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<mods:namePart id="643285A39B357EEB2AA81BFCA04F1419">Mendes, Samuel Lucas Da Silva Delgado</mods:namePart>
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<mods:namePart id="5B871E175AEFC6F5256B62DADE81F851">Paiva, Paulo Cesar De</mods:namePart>
<mods:affiliation id="9F5B2EF53D262FD994445359C941F300">Universidade Federal do Rio de Janeiro, Departamento de Zoologia, Laboratório de Polychaeta.</mods:affiliation>
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<mods:namePart id="E0A58729EC08686D193873611DBCE005">Rizzo, Alexandra E.</mods:namePart>
<mods:nameIdentifier id="9E269DE70D57701E5B97C81F8A853FC2" type="ORCID">0000-0001-5056-5358</mods:nameIdentifier>
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<mods:title id="62C1FA18C0ACCA37CE4AFA702B1F4A82">Zootaxa</mods:title>
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<mods:part id="CF399964E1D1478142DAA8F8322F7C56">
<mods:date id="3D2E0E5617689DA380D6E2A50A6A7C39">2024</mods:date>
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<mods:number id="151DE40B7511558D6DA05C739480CC48">2024-01-10</mods:number>
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<mods:number id="F7C6980C4C42EB18933107A090753306">5399</mods:number>
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<mods:url id="48181F4CDAC3FF295B344C1D9D61B546">http://dx.doi.org/10.11646/zootaxa.5399.1.2</mods:url>
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<mods:identifier id="63B3E899E80B0E3D94F639FA65725C9B" type="DOI">10.11646/zootaxa.5399.1.2</mods:identifier>
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<treatment id="03AF1C72DA12FFD5FF53FDA7FE5C3F54" LSID="urn:lsid:zoobank.org:act:5BF234D7-44E7-4B07-A47A-3F89974F64EF" httpUri="http://treatment.plazi.org/id/03AF1C72DA12FFD5FF53FDA7FE5C3F54" lastPageId="13" lastPageNumber="32" pageId="9" pageNumber="28">
<subSubSection id="C31CFEEFDA12FFD1FF53FDA7FF3E3FF6" box="[151,598,1446,1473]" pageId="9" pageNumber="28" type="nomenclature">
<paragraph id="8BB9AD64DA12FFD1FF53FDA7FF3E3FF6" blockId="9.[151,1127,1446,1545]" box="[151,598,1446,1473]" pageId="9" pageNumber="28">
<heading id="D0F11A08DA12FFD1FF53FDA7FF3E3FF6" bold="true" box="[151,598,1446,1473]" fontSize="11" level="1" pageId="9" pageNumber="28" reason="1">
<emphasis id="B9727176DA12FFD1FF53FDA7FF3E3FF6" bold="true" box="[151,598,1446,1473]" pageId="9" pageNumber="28">
<taxonomicName id="4C06D6E7DA12FFD1FF53FDA7FC993FF6" authority="Mendes &amp; Paiva &amp; Rizzo, 2024" authorityName="Mendes &amp; Paiva &amp; Rizzo" authorityYear="2024" box="[151,497,1446,1473]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" order="Opheliida" pageId="9" pageNumber="28" phylum="Annelida" rank="species" species="parapari" status="sp. nov.">
<emphasis id="B9727176DA12FFD1FF53FDA7FC993FF6" bold="true" box="[151,497,1446,1473]" italics="true" pageId="9" pageNumber="28">Pseudoscalibregma parapari</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A241CC0DDA12FFD1FE3DFDA6FF3E3FF6" box="[505,598,1447,1473]" pageId="9" pageNumber="28" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C31CFEEFDA12FFD1FF53FDCAF90F3C3E" pageId="9" pageNumber="28" type="description">
<paragraph id="8BB9AD64DA12FFD1FF53FDCAFC743FD2" blockId="9.[151,1127,1446,1545]" box="[151,284,1483,1509]" pageId="9" pageNumber="28">
<figureCitation id="133DB1E1DA12FFD1FF53FDCAFC743FD2" box="[151,284,1483,1509]" captionStart-0="FIGURE 6" captionStart-1="FIGURE 7" captionStart-2="FIGURE 8" captionStartId-0="10.[152,254,1890,1914]" captionStartId-1="11.[152,255,1773,1797]" captionStartId-2="12.[152,255,1943,1967]" captionTargetBox-0="[177,1411,741,1867]" captionTargetBox-1="[164,1423,188,1749]" captionTargetBox-2="[200,1387,181,1920]" captionTargetId-0="figure-268@10.[177,1411,741,1867]" captionTargetId-1="figure-18@11.[164,1423,181,1749]" captionTargetId-2="figure-29@12.[200,1387,181,1920]" captionTargetPageId-0="10" captionTargetPageId-1="11" captionTargetPageId-2="12" captionText-0="FIGURE 6. Pseudoscalibregma paraparisp.nov. Holotype (UERJ 9169) representation(A).Anteriorbody withfirst chaetigerous segments in ventral view; (B). Lyrate chaeta; (C). Spinous chaeta; (D). Section of mid-body parapodium, anterior view; (E). Section of posterior body parapodium, anterior view; (F). Section of posteriormost parapodium, anterior view.Abbreviations: dC = dorsal cirrus; Hor = prostomial horn; iP = interramal papilla; Pe = peristomium; Pr = prostomium; vC = ventral cirrus." captionText-1="FIGURE 7. Pseudoscalibregma parapari sp. nov., Holotype (UERJ 9169) under light microscopy. (A). Anterior body with first chaetigerous segments, dorsal view; (B). Anterior body with first chaetigerous segments, ventral view; (C). Mid-body, ventrolateral view, stained with Shirlastain A; (D). Lyrate chaetae; (E). Midbody dorsal cirrus in detail, stained with Shirlastain A. (F). Posterior body dorsal cirrus in detail, stained with Shirlastain A; (G). Section of midbody parapodium, anterior view; (H). Lateral view of posterior body, stained with Shirlastain A; (I). Posterior end, ventral view.Abbreviations: Ch1 = chaetiger 1; Ch2 = chaetiger 2; dC = dorsal cirrus; iP = interramal papilla; Nel = neuropodial lobe; Nol = notopodial lobe; Pe = peristomium; PgM = pygidial margin; Pr = prostomium; vC = ventral cirrus." captionText-2="FIGURE 8. Pseudoscalibregma parapari sp. nov. (UERJ 9213), sacrificed specimen under SEM. (A). Anterior body, ventral view; (B). Spinous chaetae in detail; (C). Final body, dorsal view.Abbreviations: dC = dorsal cirrus; Hor = horn; Pg = pygidium; Sc = Spinous chaeta." figureDoi-0="http://doi.org/10.5281/zenodo.10494433" figureDoi-1="http://doi.org/10.5281/zenodo.10494435" figureDoi-2="http://doi.org/10.5281/zenodo.10494437" httpUri-0="https://zenodo.org/record/10494433/files/figure.png" httpUri-1="https://zenodo.org/record/10494435/files/figure.png" httpUri-2="https://zenodo.org/record/10494437/files/figure.png" pageId="9" pageNumber="28">Figures 6–8</figureCitation>
</paragraph>
<paragraph id="8BB9AD64DA12FFD1FF53FDEFF90F3C3E" blockId="9.[151,1127,1446,1545]" box="[151,1127,1518,1545]" pageId="9" pageNumber="28">
https://zoobank.org/NomenclaturalActs/
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</paragraph>
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<subSubSection id="C31CFEEFDA12FFD1FF53FE36F9B23C8A" pageId="9" pageNumber="28" type="materials_examined">
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<emphasis id="B9727176DA12FFD1FF53FE36FC2D3C67" bold="true" box="[151,325,1590,1617]" pageId="9" pageNumber="28">Type material.</emphasis>
<materialsCitation id="3B6EA739DA12FFD1FE8FFE36FF3A3C66" box="[331,594,1591,1617]" collectionCode="UERJ" pageId="9" pageNumber="28" specimenCode="UERJ 9169" specimenCount="1" typeStatus="holotype">
<specimenCode id="DBA0051FDA12FFD1FE8FFE36FCA43C66" box="[331,460,1591,1617]" collectionCode="UERJ" pageId="9" pageNumber="28">UERJ 9169</specimenCode>
(
<typeStatus id="54BD13C6DA12FFD1FE1FFE36FF223C66" box="[475,586,1591,1617]" pageId="9" pageNumber="28" type="holotype">Holotype</typeStatus>
)
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:
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;
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<specimenCode id="DBA0051FDA12FFD1FD21FE36FE093C66" box="[741,865,1591,1617]" collectionCode="CANWN" pageId="9" pageNumber="28">CANWN6</specimenCode>
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<specimenCode id="DBA0051FDA12FFD1FCA5FE36FEE93C66" box="[865,897,1591,1617]" collectionCode="R" country="Chile" name="Departamento de Geologia, Universidad de Chile" pageId="9" pageNumber="28">R2</specimenCode>
,
<geoCoordinate id="EE32CBA3DA12FFD1FC4FFE36F92B3C66" box="[907,1091,1590,1617]" degrees="19" direction="south" minutes="53" orientation="latitude" pageId="9" pageNumber="28" precision="1" seconds="27,27" value="-19.890907">19º 53’ 27,27” S</geoCoordinate>
,
<geoCoordinate id="EE32CBA3DA12FFD1FB8BFE36F8793C66" box="[1103,1297,1590,1617]" degrees="39" direction="west" minutes="32" orientation="longitude" pageId="9" pageNumber="28" precision="1" seconds="59,82" value="-39.54995">39º 32’ 59,82” W</geoCoordinate>
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, coll.
<date id="FFB88BA4DA12FFD1FA97FE36FDBA3C42" pageId="9" pageNumber="28" value="2013-06-28">
28 Jun
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, 970 m, complete.
<materialsCitation id="3B6EA739DA12FFD1FE61FE5AFFCF3C42" box="[421,679,1627,1653]" collectionCode="UERJ" pageId="9" pageNumber="28" specimenCode="UERJ 9221" specimenCount="1" typeStatus="paratype">
<specimenCode id="DBA0051FDA12FFD1FE61FE5AFF4F3C42" box="[421,551,1627,1653]" collectionCode="UERJ" pageId="9" pageNumber="28">UERJ 9221</specimenCode>
(
<typeStatus id="54BD13C6DA12FFD1FDF1FE5AFFF63C42" box="[565,670,1627,1653]" pageId="9" pageNumber="28" type="paratype">Paratype</typeStatus>
)
</materialsCitation>
:
<materialsCitation id="3B6EA739DA12FFD1FD6BFE5AFE5A3C42" box="[687,818,1627,1653]" collectionCode="AMBES" pageId="9" pageNumber="28" specimenCode="AMBES16" specimenCount="1" typeStatus="paratype">
<specimenCode id="DBA0051FDA12FFD1FD6BFE5AFE463C42" box="[687,814,1627,1653]" collectionCode="AMBES" pageId="9" pageNumber="28">AMBES16</specimenCode>
,
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<specimenCode id="DBA0051FDA12FFD1FCFDFE5AFED03C42" box="[825,952,1627,1653]" collectionCode="CANWN" pageId="9" pageNumber="28">CANWN7</specimenCode>
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<materialsCitation id="3B6EA739DA12FFD1FC7CFE5AF87A3C42" box="[952,1298,1626,1653]" collectionCode="R" latitude="-19.969845" longLatPrecision="1" longitude="-39.5273" pageId="9" pageNumber="28" specimenCode="R1" specimenCount="1" typeStatus="paratype">
<specimenCode id="DBA0051FDA12FFD1FC7CFE5AFEBD3C42" box="[952,981,1627,1653]" collectionCode="R" country="Chile" name="Departamento de Geologia, Universidad de Chile" pageId="9" pageNumber="28">R1</specimenCode>
,
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,
<geoCoordinate id="EE32CBA3DA12FFD1FBBEFE5BF87A3C42" box="[1146,1298,1626,1653]" degrees="39.527303" direction="west" orientation="longitude" pageId="9" pageNumber="28" precision="1" value="-39.5273">39.527303 W</geoCoordinate>
</materialsCitation>
, coll.
<date id="FFB88BA4DA12FFD1FA90FE5AFDBA3CAE" pageId="9" pageNumber="28" value="2012-01-13">13 Jan 2012</date>
,
<quantity id="4CFE0081DA12FFD1FF1AFE7EFC553CAE" box="[222,317,1663,1689]" metricMagnitude="3" metricUnit="m" metricValue="1.3" pageId="9" pageNumber="28" unit="m" value="1300.0">1,300 m</quantity>
, complete, in two halves.
<materialsCitation id="3B6EA739DA12FFD1FDA0FE7EFE1B3CAE" box="[612,883,1663,1689]" collectionCode="UERJ" pageId="9" pageNumber="28" specimenCode="UERJ 9218" specimenCount="1" typeStatus="paratype">
<specimenCode id="DBA0051FDA12FFD1FDA0FE7EFF8F3CAE" box="[612,743,1663,1689]" collectionCode="UERJ" pageId="9" pageNumber="28">UERJ 9218</specimenCode>
(
<typeStatus id="54BD13C6DA12FFD1FD32FE7EFE023CAE" box="[758,874,1663,1689]" pageId="9" pageNumber="28" type="paratype">Paratypes</typeStatus>
)
</materialsCitation>
:
<materialsCitation id="3B6EA739DA12FFD1FCB8FE7EFE973CAE" box="[892,1023,1663,1689]" collectionCode="AMBES" pageId="9" pageNumber="28" specimenCode="AMBES12" specimenCount="1" typeStatus="paratype">
<specimenCode id="DBA0051FDA12FFD1FCB8FE7EFE933CAE" box="[892,1019,1663,1689]" collectionCode="AMBES" pageId="9" pageNumber="28">AMBES12</specimenCode>
,
</materialsCitation>
<materialsCitation id="3B6EA739DA12FFD1FBC3FE7EF9EE3CAE" box="[1031,1158,1663,1689]" collectionCode="CANWN" pageId="9" pageNumber="28" specimenCode="CANWN6" specimenCount="1" typeStatus="paratype">
<specimenCode id="DBA0051FDA12FFD1FBC3FE7EF9EE3CAE" box="[1031,1158,1663,1689]" collectionCode="CANWN" pageId="9" pageNumber="28">CANWN6</specimenCode>
</materialsCitation>
<materialsCitation id="3B6EA739DA12FFD1FB42FE7EFC463C8A" collectionCode="R" latitude="-19.890907" longLatPrecision="1" longitude="-39.54995" pageId="9" pageNumber="28" specimenCode="R1" specimenCount="1" typeStatus="paratype">
<specimenCode id="DBA0051FDA12FFD1FB42FE7EF9CB3CAE" box="[1158,1187,1663,1689]" collectionCode="R" country="Chile" name="Departamento de Geologia, Universidad de Chile" pageId="9" pageNumber="28">R1</specimenCode>
,
<geoCoordinate id="EE32CBA3DA12FFD1FB6BFE7EF8023CAE" box="[1199,1386,1662,1689]" degrees="19" direction="south" minutes="53" orientation="latitude" pageId="9" pageNumber="28" precision="1" seconds="27,27" value="-19.890907">19º 53’ 27,27” S</geoCoordinate>
,
<geoCoordinate id="EE32CBA3DA12FFD1FAB3FE7EFC463C8A" degrees="39" direction="west" minutes="32" orientation="longitude" pageId="9" pageNumber="28" precision="1" seconds="59,82" value="-39.54995">39º 32’ 59,82” W</geoCoordinate>
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, coll.
<date id="FFB88BA4DA12FFD1FEB5FEA2FC943C8A" box="[369,508,1699,1725]" pageId="9" pageNumber="28" value="2012-01-13">13 Jan 2012</date>
,
<quantity id="4CFE0081DA12FFD1FDC3FEA2FF0D3C8A" box="[519,613,1699,1725]" metricMagnitude="3" metricUnit="m" metricValue="1.023" pageId="9" pageNumber="28" unit="m" value="1023.0">1,023 m</quantity>
,
<specimenCount id="9D0066EDDA12FFD1FDB4FEA2FFD13C8A" box="[624,697,1699,1725]" count="2" pageId="9" pageNumber="28" type="generic">2 spec</specimenCount>
, 1 incomplete anterior fragment and 1 complete.
</paragraph>
</subSubSection>
<subSubSection id="C31CFEEFDA12FFD1FF03FEC7F9563D46" pageId="9" pageNumber="28" type="diagnosis">
<paragraph id="8BB9AD64DA12FFD1FF03FEC7F9563D46" blockId="9.[151,1437,1590,2013]" pageId="9" pageNumber="28">
<emphasis id="B9727176DA12FFD1FF03FEC7FC2A3CD7" bold="true" box="[199,322,1734,1760]" pageId="9" pageNumber="28">Diagnosis.</emphasis>
Body arenicoliform, expanded over chaetigers 4–11. Body surface covered by secondarily annulated rings, each made by inconspicuous rectangular pads anteriorly and smaller squared to rectangular pads posteriorly. Chaetiger 1 biannulated dorsally and ventrally, chaetigers 2–3 triannulated, quadriannulated from chaetiger 4 onwards. Dorsal and ventral cirri present from chaetiger 14. Spines present on chaetigers 1–2, 5 per fascicle, with pointed tips. Lyrate chaetae from chaetiger 2, 4–5 per fascicle, with subequal tynes.
</paragraph>
</subSubSection>
<subSubSection id="C31CFEEFDA12FFD5FF03FF7BFFEA3B76" lastPageId="13" lastPageNumber="32" pageId="9" pageNumber="28" type="description">
<paragraph id="8BB9AD64DA12FFD2FF03FF7BFE7A3ACE" blockId="9.[151,1437,1590,2013]" lastBlockId="10.[151,1437,151,717]" lastPageId="10" lastPageNumber="29" pageId="9" pageNumber="28">
<emphasis id="B9727176DA12FFD1FF03FF7BFC313DA3" bold="true" box="[199,345,1914,1940]" pageId="9" pageNumber="28">Description.</emphasis>
<typeStatus id="54BD13C6DA12FFD1FE9BFF7AFCAF3DA2" box="[351,455,1915,1941]" pageId="9" pageNumber="28" type="holotype">Holotype</typeStatus>
complete,
<quantity id="4CFE0081DA12FFD1FD86FF7AFFEB3DA2" box="[578,643,1915,1941]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="9" pageNumber="28" unit="mm" value="4.0">4 mm</quantity>
long,
<quantity id="4CFE0081DA12FFD1FD0CFF7AFE613DA2" box="[712,777,1915,1941]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="9" pageNumber="28" unit="mm" value="1.0">1 mm</quantity>
wide across expanded anterior region,
<quantity id="4CFE0081DA12FFD1FB79FF7AF87B3DA2" box="[1213,1299,1915,1941]" metricMagnitude="-4" metricUnit="m" metricValue="4.0" pageId="9" pageNumber="28" unit="mm" value="0.4">0.4 mm</quantity>
wide across narrower posterior region, with 33 chaetigers. Small sized species,
<typeStatus id="54BD13C6DA12FFD1FC4DFF9EFE9E3D8E" box="[905,1014,1951,1977]" pageId="9" pageNumber="28" type="paratype">Paratypes</typeStatus>
measuring
<quantity id="4CFE0081DA12FFD1FBBDFF9FF98C3D8E" box="[1145,1252,1950,1977]" metricMagnitude="-3" metricUnit="m" metricValue="4.25" metricValueMax="5.0" metricValueMin="3.5" pageId="9" pageNumber="28" unit="mm" value="4.25" valueMax="5.0" valueMin="3.5">3.5–5mm</quantity>
long,
<quantity id="4CFE0081DA12FFD1FAEEFF9EF8EC3D8E" box="[1322,1412,1951,1977]" metricMagnitude="-4" metricUnit="m" metricValue="2.0" pageId="9" pageNumber="28" unit="mm" value="0.2">0.2 mm</quantity>
–
<quantity id="4CFE0081DA12FFD1FA50FF9EFDAB3DEA" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="9" pageNumber="28" unit="mm" value="1.0">1 mm</quantity>
wide, for 30–35 chaetigers. Body arenicoliform, expanded over chaetigers 4–11. Colour in alcohol pale tan to yellowish. Body surface covered by secondarily annulated rings, each one formed by inconspicuous rectangular pads anteriorly and smaller squared to rectangular pads posteriorly. Pads sometimes with small individual dark blue or black glands within, due to entangled cellular tubules.
</paragraph>
<paragraph id="8BB9AD64DA11FFD2FF03F902FE2A3BE6" blockId="10.[151,1437,151,717]" pageId="10" pageNumber="29">
Rounded prostomium, with 2 short spherical horns, both projected laterally (
<figureCitation id="133DB1E1DA11FFD2FBD9F902F9133B2A" box="[1053,1147,259,285]" captionStart="FIGURE 6" captionStartId="10.[152,254,1890,1914]" captionTargetBox="[177,1411,741,1867]" captionTargetId="figure-268@10.[177,1411,741,1867]" captionTargetPageId="10" captionText="FIGURE 6. Pseudoscalibregma paraparisp.nov. Holotype (UERJ 9169) representation(A).Anteriorbody withfirst chaetigerous segments in ventral view; (B). Lyrate chaeta; (C). Spinous chaeta; (D). Section of mid-body parapodium, anterior view; (E). Section of posterior body parapodium, anterior view; (F). Section of posteriormost parapodium, anterior view.Abbreviations: dC = dorsal cirrus; Hor = prostomial horn; iP = interramal papilla; Pe = peristomium; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494433" httpUri="https://zenodo.org/record/10494433/files/figure.png" pageId="10" pageNumber="29">Figs 6A</figureCitation>
;
<figureCitation id="133DB1E1DA11FFD2FB42F902F9A33B2A" box="[1158,1227,259,285]" captionStart="FIGURE 7" captionStartId="11.[152,255,1773,1797]" captionTargetBox="[164,1423,188,1749]" captionTargetId="figure-18@11.[164,1423,181,1749]" captionTargetPageId="11" captionText="FIGURE 7. Pseudoscalibregma parapari sp. nov., Holotype (UERJ 9169) under light microscopy. (A). Anterior body with first chaetigerous segments, dorsal view; (B). Anterior body with first chaetigerous segments, ventral view; (C). Mid-body, ventrolateral view, stained with Shirlastain A; (D). Lyrate chaetae; (E). Midbody dorsal cirrus in detail, stained with Shirlastain A. (F). Posterior body dorsal cirrus in detail, stained with Shirlastain A; (G). Section of midbody parapodium, anterior view; (H). Lateral view of posterior body, stained with Shirlastain A; (I). Posterior end, ventral view.Abbreviations: Ch1 = chaetiger 1; Ch2 = chaetiger 2; dC = dorsal cirrus; iP = interramal papilla; Nel = neuropodial lobe; Nol = notopodial lobe; Pe = peristomium; PgM = pygidial margin; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494435" httpUri="https://zenodo.org/record/10494435/files/figure.png" pageId="10" pageNumber="29">7A, B</figureCitation>
;
<figureCitation id="133DB1E1DA11FFD2FB13F902F9953B2A" box="[1239,1277,259,285]" captionStart="FIGURE 8" captionStartId="12.[152,255,1943,1967]" captionTargetBox="[200,1387,181,1920]" captionTargetId="figure-29@12.[200,1387,181,1920]" captionTargetPageId="12" captionText="FIGURE 8. Pseudoscalibregma parapari sp. nov. (UERJ 9213), sacrificed specimen under SEM. (A). Anterior body, ventral view; (B). Spinous chaetae in detail; (C). Final body, dorsal view.Abbreviations: dC = dorsal cirrus; Hor = horn; Pg = pygidium; Sc = Spinous chaeta." figureDoi="http://doi.org/10.5281/zenodo.10494437" httpUri="https://zenodo.org/record/10494437/files/figure.png" pageId="10" pageNumber="29">8A</figureCitation>
). Eyes absent. Nuchal organs not observed. Peristomium achaetous, as single annulus both dorsal and ventrally (
<figureCitation id="133DB1E1DA11FFD2FB24F926F8563B76" box="[1248,1342,295,321]" captionStart="FIGURE 6" captionStartId="10.[152,254,1890,1914]" captionTargetBox="[177,1411,741,1867]" captionTargetId="figure-268@10.[177,1411,741,1867]" captionTargetPageId="10" captionText="FIGURE 6. Pseudoscalibregma paraparisp.nov. Holotype (UERJ 9169) representation(A).Anteriorbody withfirst chaetigerous segments in ventral view; (B). Lyrate chaeta; (C). Spinous chaeta; (D). Section of mid-body parapodium, anterior view; (E). Section of posterior body parapodium, anterior view; (F). Section of posteriormost parapodium, anterior view.Abbreviations: dC = dorsal cirrus; Hor = prostomial horn; iP = interramal papilla; Pe = peristomium; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494433" httpUri="https://zenodo.org/record/10494433/files/figure.png" pageId="10" pageNumber="29">Figs 6A</figureCitation>
,
<figureCitation id="133DB1E1DA11FFD2FA8DF926F8F93B76" box="[1353,1425,295,321]" captionStart="FIGURE 7" captionStartId="11.[152,255,1773,1797]" captionTargetBox="[164,1423,188,1749]" captionTargetId="figure-18@11.[164,1423,181,1749]" captionTargetPageId="11" captionText="FIGURE 7. Pseudoscalibregma parapari sp. nov., Holotype (UERJ 9169) under light microscopy. (A). Anterior body with first chaetigerous segments, dorsal view; (B). Anterior body with first chaetigerous segments, ventral view; (C). Mid-body, ventrolateral view, stained with Shirlastain A; (D). Lyrate chaetae; (E). Midbody dorsal cirrus in detail, stained with Shirlastain A. (F). Posterior body dorsal cirrus in detail, stained with Shirlastain A; (G). Section of midbody parapodium, anterior view; (H). Lateral view of posterior body, stained with Shirlastain A; (I). Posterior end, ventral view.Abbreviations: Ch1 = chaetiger 1; Ch2 = chaetiger 2; dC = dorsal cirrus; iP = interramal papilla; Nel = neuropodial lobe; Nol = notopodial lobe; Pe = peristomium; PgM = pygidial margin; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494435" httpUri="https://zenodo.org/record/10494435/files/figure.png" pageId="10" pageNumber="29">7A–B</figureCitation>
). Proboscis smooth. Mouth’s superior lip nature obscure in
<typeStatus id="54BD13C6DA11FFD2FCFCF94AFE003B52" box="[824,872,331,357]" pageId="10" pageNumber="29">type</typeStatus>
material. Inferior lip with up to 6 lobules, these formed by the contribution of ventral groove’s first pad. Ventral groove present from chaetiger 1, first pad as part of mouth, followed by paired triannulated pads on each chaetiger, forming a mid-line ridge throughout (
<figureCitation id="133DB1E1DA11FFD2FAC6F992F8083B9A" box="[1282,1376,403,429]" captionStart="FIGURE 6" captionStartId="10.[152,254,1890,1914]" captionTargetBox="[177,1411,741,1867]" captionTargetId="figure-268@10.[177,1411,741,1867]" captionTargetPageId="10" captionText="FIGURE 6. Pseudoscalibregma paraparisp.nov. Holotype (UERJ 9169) representation(A).Anteriorbody withfirst chaetigerous segments in ventral view; (B). Lyrate chaeta; (C). Spinous chaeta; (D). Section of mid-body parapodium, anterior view; (E). Section of posterior body parapodium, anterior view; (F). Section of posteriormost parapodium, anterior view.Abbreviations: dC = dorsal cirrus; Hor = prostomial horn; iP = interramal papilla; Pe = peristomium; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494433" httpUri="https://zenodo.org/record/10494433/files/figure.png" pageId="10" pageNumber="29">Figs 6A</figureCitation>
,
<figureCitation id="133DB1E1DA11FFD2FAAFF992F8E73B9A" box="[1387,1423,403,429]" captionStart="FIGURE 7" captionStartId="11.[152,255,1773,1797]" captionTargetBox="[164,1423,188,1749]" captionTargetId="figure-18@11.[164,1423,181,1749]" captionTargetPageId="11" captionText="FIGURE 7. Pseudoscalibregma parapari sp. nov., Holotype (UERJ 9169) under light microscopy. (A). Anterior body with first chaetigerous segments, dorsal view; (B). Anterior body with first chaetigerous segments, ventral view; (C). Mid-body, ventrolateral view, stained with Shirlastain A; (D). Lyrate chaetae; (E). Midbody dorsal cirrus in detail, stained with Shirlastain A. (F). Posterior body dorsal cirrus in detail, stained with Shirlastain A; (G). Section of midbody parapodium, anterior view; (H). Lateral view of posterior body, stained with Shirlastain A; (I). Posterior end, ventral view.Abbreviations: Ch1 = chaetiger 1; Ch2 = chaetiger 2; dC = dorsal cirrus; iP = interramal papilla; Nel = neuropodial lobe; Nol = notopodial lobe; Pe = peristomium; PgM = pygidial margin; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494435" httpUri="https://zenodo.org/record/10494435/files/figure.png" pageId="10" pageNumber="29">7C</figureCitation>
). Posterior pads poorly marked and smaller than anterior pads.
</paragraph>
<paragraph id="8BB9AD64DA11FFD2FF03F9DAFE8138FA" blockId="10.[151,1437,151,717]" pageId="10" pageNumber="29">
Chaetiger 1 biannulated both dorsal and ventrally, chaetigers 2–3 triannulated, quadriannulated from chaetiger 4 onwards (
<figureCitation id="133DB1E1DA11FFD2FEDCF9FEFC1D382E" box="[280,373,511,537]" captionStart="FIGURE 6" captionStartId="10.[152,254,1890,1914]" captionTargetBox="[177,1411,741,1867]" captionTargetId="figure-268@10.[177,1411,741,1867]" captionTargetPageId="10" captionText="FIGURE 6. Pseudoscalibregma paraparisp.nov. Holotype (UERJ 9169) representation(A).Anteriorbody withfirst chaetigerous segments in ventral view; (B). Lyrate chaeta; (C). Spinous chaeta; (D). Section of mid-body parapodium, anterior view; (E). Section of posterior body parapodium, anterior view; (F). Section of posteriormost parapodium, anterior view.Abbreviations: dC = dorsal cirrus; Hor = prostomial horn; iP = interramal papilla; Pe = peristomium; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494433" httpUri="https://zenodo.org/record/10494433/files/figure.png" pageId="10" pageNumber="29">Figs 6A</figureCitation>
,
<figureCitation id="133DB1E1DA11FFD2FEBBF9FEFCAB382E" box="[383,451,511,537]" captionStart="FIGURE 7" captionStartId="11.[152,255,1773,1797]" captionTargetBox="[164,1423,188,1749]" captionTargetId="figure-18@11.[164,1423,181,1749]" captionTargetPageId="11" captionText="FIGURE 7. Pseudoscalibregma parapari sp. nov., Holotype (UERJ 9169) under light microscopy. (A). Anterior body with first chaetigerous segments, dorsal view; (B). Anterior body with first chaetigerous segments, ventral view; (C). Mid-body, ventrolateral view, stained with Shirlastain A; (D). Lyrate chaetae; (E). Midbody dorsal cirrus in detail, stained with Shirlastain A. (F). Posterior body dorsal cirrus in detail, stained with Shirlastain A; (G). Section of midbody parapodium, anterior view; (H). Lateral view of posterior body, stained with Shirlastain A; (I). Posterior end, ventral view.Abbreviations: Ch1 = chaetiger 1; Ch2 = chaetiger 2; dC = dorsal cirrus; iP = interramal papilla; Nel = neuropodial lobe; Nol = notopodial lobe; Pe = peristomium; PgM = pygidial margin; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494435" httpUri="https://zenodo.org/record/10494435/files/figure.png" pageId="10" pageNumber="29">7A, B</figureCitation>
). Parapodial lobes rounded anteriorly; from mid-body to posterior chaetigers, parapodial lobes rounded to squared dorsally, subtriangular to ellipsoid ventrally, parapodial lobes always shorter than cirri (
<figureCitation id="133DB1E1DA11FFD2FF5BFA46FC703856" box="[159,280,583,609]" captionStart="FIGURE 6" captionStartId="10.[152,254,1890,1914]" captionTargetBox="[177,1411,741,1867]" captionTargetId="figure-268@10.[177,1411,741,1867]" captionTargetPageId="10" captionText="FIGURE 6. Pseudoscalibregma paraparisp.nov. Holotype (UERJ 9169) representation(A).Anteriorbody withfirst chaetigerous segments in ventral view; (B). Lyrate chaeta; (C). Spinous chaeta; (D). Section of mid-body parapodium, anterior view; (E). Section of posterior body parapodium, anterior view; (F). Section of posteriormost parapodium, anterior view.Abbreviations: dC = dorsal cirrus; Hor = prostomial horn; iP = interramal papilla; Pe = peristomium; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494433" httpUri="https://zenodo.org/record/10494433/files/figure.png" pageId="10" pageNumber="29">Figs 6D–F</figureCitation>
,
<figureCitation id="133DB1E1DA11FFD2FEE7FA46FC2C3856" box="[291,324,583,609]" captionStart="FIGURE 7" captionStartId="11.[152,255,1773,1797]" captionTargetBox="[164,1423,188,1749]" captionTargetId="figure-18@11.[164,1423,181,1749]" captionTargetPageId="11" captionText="FIGURE 7. Pseudoscalibregma parapari sp. nov., Holotype (UERJ 9169) under light microscopy. (A). Anterior body with first chaetigerous segments, dorsal view; (B). Anterior body with first chaetigerous segments, ventral view; (C). Mid-body, ventrolateral view, stained with Shirlastain A; (D). Lyrate chaetae; (E). Midbody dorsal cirrus in detail, stained with Shirlastain A. (F). Posterior body dorsal cirrus in detail, stained with Shirlastain A; (G). Section of midbody parapodium, anterior view; (H). Lateral view of posterior body, stained with Shirlastain A; (I). Posterior end, ventral view.Abbreviations: Ch1 = chaetiger 1; Ch2 = chaetiger 2; dC = dorsal cirrus; iP = interramal papilla; Nel = neuropodial lobe; Nol = notopodial lobe; Pe = peristomium; PgM = pygidial margin; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494435" httpUri="https://zenodo.org/record/10494435/files/figure.png" pageId="10" pageNumber="29">7G</figureCitation>
);parapodial gradually changing to thinner and smaller from mid-body onwards. Dorsal and ventral cirri present from chaetiger 14; fist cirri as rounded projections with smooth tips, then subtriangular and finally lanceolated on posteriormost chaetigers (
<figureCitation id="133DB1E1DA11FFD2FD9AFA8EFFBE389E" box="[606,726,655,681]" captionStart="FIGURE 6" captionStartId="10.[152,254,1890,1914]" captionTargetBox="[177,1411,741,1867]" captionTargetId="figure-268@10.[177,1411,741,1867]" captionTargetPageId="10" captionText="FIGURE 6. Pseudoscalibregma paraparisp.nov. Holotype (UERJ 9169) representation(A).Anteriorbody withfirst chaetigerous segments in ventral view; (B). Lyrate chaeta; (C). Spinous chaeta; (D). Section of mid-body parapodium, anterior view; (E). Section of posterior body parapodium, anterior view; (F). Section of posteriormost parapodium, anterior view.Abbreviations: dC = dorsal cirrus; Hor = prostomial horn; iP = interramal papilla; Pe = peristomium; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494433" httpUri="https://zenodo.org/record/10494433/files/figure.png" pageId="10" pageNumber="29">Figs 6D–F</figureCitation>
,
<figureCitation id="133DB1E1DA11FFD2FD25FA8EFE4D389E" box="[737,805,655,681]" captionStart="FIGURE 7" captionStartId="11.[152,255,1773,1797]" captionTargetBox="[164,1423,188,1749]" captionTargetId="figure-18@11.[164,1423,181,1749]" captionTargetPageId="11" captionText="FIGURE 7. Pseudoscalibregma parapari sp. nov., Holotype (UERJ 9169) under light microscopy. (A). Anterior body with first chaetigerous segments, dorsal view; (B). Anterior body with first chaetigerous segments, ventral view; (C). Mid-body, ventrolateral view, stained with Shirlastain A; (D). Lyrate chaetae; (E). Midbody dorsal cirrus in detail, stained with Shirlastain A. (F). Posterior body dorsal cirrus in detail, stained with Shirlastain A; (G). Section of midbody parapodium, anterior view; (H). Lateral view of posterior body, stained with Shirlastain A; (I). Posterior end, ventral view.Abbreviations: Ch1 = chaetiger 1; Ch2 = chaetiger 2; dC = dorsal cirrus; iP = interramal papilla; Nel = neuropodial lobe; Nol = notopodial lobe; Pe = peristomium; PgM = pygidial margin; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494435" httpUri="https://zenodo.org/record/10494435/files/figure.png" pageId="10" pageNumber="29">7E–H</figureCitation>
), all with large tubular glands within. Interramal papillae from chaetiger 14, knob-like, with thin tubular glands within (
<figureCitation id="133DB1E1DA11FFD2FC8AFAB2FEC338FA" box="[846,939,691,717]" captionStart="FIGURE 6" captionStartId="10.[152,254,1890,1914]" captionTargetBox="[177,1411,741,1867]" captionTargetId="figure-268@10.[177,1411,741,1867]" captionTargetPageId="10" captionText="FIGURE 6. Pseudoscalibregma paraparisp.nov. Holotype (UERJ 9169) representation(A).Anteriorbody withfirst chaetigerous segments in ventral view; (B). Lyrate chaeta; (C). Spinous chaeta; (D). Section of mid-body parapodium, anterior view; (E). Section of posterior body parapodium, anterior view; (F). Section of posteriormost parapodium, anterior view.Abbreviations: dC = dorsal cirrus; Hor = prostomial horn; iP = interramal papilla; Pe = peristomium; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494433" httpUri="https://zenodo.org/record/10494433/files/figure.png" pageId="10" pageNumber="29">Figs 6D</figureCitation>
,
<figureCitation id="133DB1E1DA11FFD2FC73FAB2FEB438FA" box="[951,988,691,717]" captionStart="FIGURE 7" captionStartId="11.[152,255,1773,1797]" captionTargetBox="[164,1423,188,1749]" captionTargetId="figure-18@11.[164,1423,181,1749]" captionTargetPageId="11" captionText="FIGURE 7. Pseudoscalibregma parapari sp. nov., Holotype (UERJ 9169) under light microscopy. (A). Anterior body with first chaetigerous segments, dorsal view; (B). Anterior body with first chaetigerous segments, ventral view; (C). Mid-body, ventrolateral view, stained with Shirlastain A; (D). Lyrate chaetae; (E). Midbody dorsal cirrus in detail, stained with Shirlastain A. (F). Posterior body dorsal cirrus in detail, stained with Shirlastain A; (G). Section of midbody parapodium, anterior view; (H). Lateral view of posterior body, stained with Shirlastain A; (I). Posterior end, ventral view.Abbreviations: Ch1 = chaetiger 1; Ch2 = chaetiger 2; dC = dorsal cirrus; iP = interramal papilla; Nel = neuropodial lobe; Nol = notopodial lobe; Pe = peristomium; PgM = pygidial margin; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494435" httpUri="https://zenodo.org/record/10494435/files/figure.png" pageId="10" pageNumber="29">7G</figureCitation>
).
</paragraph>
<caption id="DF79FDECDA11FFD2FF5CFF63F8253DD1" ID-DOI="http://doi.org/10.5281/zenodo.10494433" ID-Zenodo-Dep="10494433" httpUri="https://zenodo.org/record/10494433/files/figure.png" pageId="10" pageNumber="29" startId="10.[152,254,1890,1914]" targetBox="[177,1411,741,1867]" targetPageId="10" targetType="figure">
<paragraph id="8BB9AD64DA11FFD2FF5CFF63F8253DD1" blockId="10.[151,1437,1890,2022]" pageId="10" pageNumber="29">
<emphasis id="B9727176DA11FFD2FF5CFF63FC7C3D4D" bold="true" box="[152,276,1890,1914]" pageId="10" pageNumber="29">FIGURE 6.</emphasis>
<taxonomicName id="4C06D6E7DA11FFD2FEDCFF63FF523D4D" authority="Mendes &amp; Paiva &amp; Rizzo, 2024" authorityName="Mendes &amp; Paiva &amp; Rizzo" authorityYear="2024" box="[280,570,1890,1914]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="10" pageNumber="29" phylum="Annelida" rank="species" species="parapari" status="sp. nov.">
<emphasis id="B9727176DA11FFD2FEDCFF63FF523D4D" box="[280,570,1890,1914]" italics="true" pageId="10" pageNumber="29">Pseudoscalibregma parapari</emphasis>
</taxonomicName>
<emphasis id="B9727176DA11FFD2FDF9FF63FFE33D4D" bold="true" box="[573,651,1890,1914]" pageId="10" pageNumber="29">
<taxonomicNameLabel id="A241CC0DDA11FFD2FDF9FF63FFE33D4D" box="[573,651,1890,1914]" pageId="10" pageNumber="29" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
Holotype (UERJ 9169) representation (A).Anterior body with first chaetigerous segments in ventral view; (B). Lyrate chaeta; (C). Spinous chaeta; (D). Section of mid-body parapodium, anterior view; (E). Section of posterior body parapodium, anterior view; (F). Section of posteriormost parapodium, anterior view. Abbreviations: dC = dorsal cirrus; Hor = prostomial horn; iP = interramal papilla; Pe = peristomium; Pr = prostomium; vC = ventral cirrus.
</paragraph>
</caption>
<caption id="DF79FDECDA10FFD3FF5CFEECFE793DEA" ID-DOI="http://doi.org/10.5281/zenodo.10494435" ID-Zenodo-Dep="10494435" httpUri="https://zenodo.org/record/10494435/files/figure.png" pageId="11" pageNumber="30" startId="11.[152,255,1773,1797]" targetBox="[164,1423,188,1749]" targetPageId="11" targetType="figure">
<paragraph id="8BB9AD64DA10FFD3FF5CFEECFE793DEA" blockId="11.[151,1437,1773,2014]" pageId="11" pageNumber="30">
<emphasis id="B9727176DA10FFD3FF5CFEECFC723D32" bold="true" box="[152,282,1773,1797]" pageId="11" pageNumber="30">FIGURE 7.</emphasis>
<taxonomicName id="4C06D6E7DA10FFD3FEE6FEECFF233D32" authority="Mendes &amp; Paiva &amp; Rizzo, 2024" authorityName="Mendes &amp; Paiva &amp; Rizzo" authorityYear="2024" box="[290,587,1773,1797]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="11" pageNumber="30" phylum="Annelida" rank="species" species="parapari" status="sp. nov.">
<emphasis id="B9727176DA10FFD3FEE6FEECFF233D32" box="[290,587,1773,1797]" italics="true" pageId="11" pageNumber="30">Pseudoscalibregma parapari</emphasis>
</taxonomicName>
<emphasis id="B9727176DA10FFD3FD97FEECFFC43D32" bold="true" box="[595,684,1773,1797]" pageId="11" pageNumber="30">
<taxonomicNameLabel id="A241CC0DDA10FFD3FD97FEECFFC03D32" box="[595,680,1773,1797]" pageId="11" pageNumber="30" rank="species">sp. nov.</taxonomicNameLabel>
,
</emphasis>
Holotype (UERJ 9169) under light microscopy. (A). Anterior body with first chaetigerous segments, dorsal view; (B). Anterior body with first chaetigerous segments, ventral view; (C). Mid-body, ventrolateral view, stained with Shirlastain A; (D). Lyrate chaetae; (E). Midbody dorsal cirrus in detail, stained with Shirlastain A. (F). Posterior body dorsal cirrus in detail, stained with Shirlastain A; (G). Section of midbody parapodium, anterior view; (H). Lateral view of posterior body, stained with Shirlastain A; (I). Posterior end, ventral view. Abbreviations: Ch1 = chaetiger 1; Ch2 = chaetiger 2; dC = dorsal cirrus; iP = interramal papilla; Nel = neuropodial lobe; Nol = notopodial lobe; Pe = peristomium; PgM = pygidial margin; Pr = prostomium; vC = ventral cirrus.
</paragraph>
</caption>
<caption id="DF79FDECDA17FFD4FF5CFF96FC033DCF" ID-DOI="http://doi.org/10.5281/zenodo.10494437" ID-Zenodo-Dep="10494437" httpUri="https://zenodo.org/record/10494437/files/figure.png" pageId="12" pageNumber="31" startId="12.[152,255,1943,1967]" targetBox="[200,1387,181,1920]" targetPageId="12" targetType="figure">
<paragraph id="8BB9AD64DA17FFD4FF5CFF96FC033DCF" blockId="12.[151,1437,1943,2040]" pageId="12" pageNumber="31">
<emphasis id="B9727176DA17FFD4FF5CFF96FC713D98" bold="true" box="[152,281,1943,1967]" pageId="12" pageNumber="31">FIGURE 8.</emphasis>
<taxonomicName id="4C06D6E7DA17FFD4FEE4FF99FF2F3D98" authority="Mendes &amp; Paiva &amp; Rizzo, 2024" authorityName="Mendes &amp; Paiva &amp; Rizzo" authorityYear="2024" box="[288,583,1944,1968]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="12" pageNumber="31" phylum="Annelida" rank="species" species="parapari" status="sp. nov.">
<emphasis id="B9727176DA17FFD4FEE4FF99FF2F3D98" box="[288,583,1944,1968]" italics="true" pageId="12" pageNumber="31">Pseudoscalibregma parapari</emphasis>
</taxonomicName>
<emphasis id="B9727176DA17FFD4FD8AFF99FFF73D87" bold="true" box="[590,671,1944,1968]" pageId="12" pageNumber="31">
<taxonomicNameLabel id="A241CC0DDA17FFD4FD8AFF99FFF73D87" box="[590,671,1944,1968]" pageId="12" pageNumber="31" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(UERJ 9213), sacrificed specimen under SEM. (A). Anterior body, ventral view; (B). Spinous chaetae in detail; (C). Final body, dorsal view. Abbreviations: dC = dorsal cirrus; Hor = horn; Pg = pygidium; Sc = Spinous chaeta.
</paragraph>
</caption>
<paragraph id="8BB9AD64DA16FFD5FF03F896FFEA3B76" blockId="13.[151,1437,150,1379]" pageId="13" pageNumber="32">
Short spinous setae present from chaetiger 1, 5 per fascicle, with pointed tips (
<figureCitation id="133DB1E1DA16FFD5FBF1F896F9E53A86" box="[1077,1165,151,177]" captionStart="FIGURE 8" captionStartId="12.[152,255,1943,1967]" captionTargetBox="[200,1387,181,1920]" captionTargetId="figure-29@12.[200,1387,181,1920]" captionTargetPageId="12" captionText="FIGURE 8. Pseudoscalibregma parapari sp. nov. (UERJ 9213), sacrificed specimen under SEM. (A). Anterior body, ventral view; (B). Spinous chaetae in detail; (C). Final body, dorsal view.Abbreviations: dC = dorsal cirrus; Hor = horn; Pg = pygidium; Sc = Spinous chaeta." figureDoi="http://doi.org/10.5281/zenodo.10494437" httpUri="https://zenodo.org/record/10494437/files/figure.png" pageId="13" pageNumber="32">Fig. 8B</figureCitation>
). Lyrate chaetae present from chaetiger 2 (
<figureCitation id="133DB1E1DA16FFD5FE98F8BAFCDE3AE2" box="[348,438,187,213]" captionStart="FIGURE 6" captionStartId="10.[152,254,1890,1914]" captionTargetBox="[177,1411,741,1867]" captionTargetId="figure-268@10.[177,1411,741,1867]" captionTargetPageId="10" captionText="FIGURE 6. Pseudoscalibregma paraparisp.nov. Holotype (UERJ 9169) representation(A).Anteriorbody withfirst chaetigerous segments in ventral view; (B). Lyrate chaeta; (C). Spinous chaeta; (D). Section of mid-body parapodium, anterior view; (E). Section of posterior body parapodium, anterior view; (F). Section of posteriormost parapodium, anterior view.Abbreviations: dC = dorsal cirrus; Hor = prostomial horn; iP = interramal papilla; Pe = peristomium; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494433" httpUri="https://zenodo.org/record/10494433/files/figure.png" pageId="13" pageNumber="32">Figs 6B</figureCitation>
,
<figureCitation id="133DB1E1DA16FFD5FE05F8BAFC8F3AE2" box="[449,487,187,213]" captionStart="FIGURE 7" captionStartId="11.[152,255,1773,1797]" captionTargetBox="[164,1423,188,1749]" captionTargetId="figure-18@11.[164,1423,181,1749]" captionTargetPageId="11" captionText="FIGURE 7. Pseudoscalibregma parapari sp. nov., Holotype (UERJ 9169) under light microscopy. (A). Anterior body with first chaetigerous segments, dorsal view; (B). Anterior body with first chaetigerous segments, ventral view; (C). Mid-body, ventrolateral view, stained with Shirlastain A; (D). Lyrate chaetae; (E). Midbody dorsal cirrus in detail, stained with Shirlastain A. (F). Posterior body dorsal cirrus in detail, stained with Shirlastain A; (G). Section of midbody parapodium, anterior view; (H). Lateral view of posterior body, stained with Shirlastain A; (I). Posterior end, ventral view.Abbreviations: Ch1 = chaetiger 1; Ch2 = chaetiger 2; dC = dorsal cirrus; iP = interramal papilla; Nel = neuropodial lobe; Nol = notopodial lobe; Pe = peristomium; PgM = pygidial margin; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494435" httpUri="https://zenodo.org/record/10494435/files/figure.png" pageId="13" pageNumber="32">7D</figureCitation>
), 4–5 per fascicle, with subequal tynes (tynes’ length ratio: 1.2). Capillaries organized in 2 rows anteriorly, 1 one row posteriorly. Parapodial lobes reduced on chaetiger 1, with smaller chaetae. Pygidium triannulated, damaged on all specimens, but a short terminal margin, from which emerges a crown with about 15 lobules (
<figureCitation id="133DB1E1DA16FFD5FF33F926FC2D3B76" box="[247,325,295,321]" captionStart="FIGURE 7" captionStartId="11.[152,255,1773,1797]" captionTargetBox="[164,1423,188,1749]" captionTargetId="figure-18@11.[164,1423,181,1749]" captionTargetPageId="11" captionText="FIGURE 7. Pseudoscalibregma parapari sp. nov., Holotype (UERJ 9169) under light microscopy. (A). Anterior body with first chaetigerous segments, dorsal view; (B). Anterior body with first chaetigerous segments, ventral view; (C). Mid-body, ventrolateral view, stained with Shirlastain A; (D). Lyrate chaetae; (E). Midbody dorsal cirrus in detail, stained with Shirlastain A. (F). Posterior body dorsal cirrus in detail, stained with Shirlastain A; (G). Section of midbody parapodium, anterior view; (H). Lateral view of posterior body, stained with Shirlastain A; (I). Posterior end, ventral view.Abbreviations: Ch1 = chaetiger 1; Ch2 = chaetiger 2; dC = dorsal cirrus; iP = interramal papilla; Nel = neuropodial lobe; Nol = notopodial lobe; Pe = peristomium; PgM = pygidial margin; Pr = prostomium; vC = ventral cirrus." figureDoi="http://doi.org/10.5281/zenodo.10494435" httpUri="https://zenodo.org/record/10494435/files/figure.png" pageId="13" pageNumber="32">Fig. 7I</figureCitation>
,
<figureCitation id="133DB1E1DA16FFD5FE95F926FC1D3B76" box="[337,373,295,321]" captionStart="FIGURE 8" captionStartId="12.[152,255,1943,1967]" captionTargetBox="[200,1387,181,1920]" captionTargetId="figure-29@12.[200,1387,181,1920]" captionTargetPageId="12" captionText="FIGURE 8. Pseudoscalibregma parapari sp. nov. (UERJ 9213), sacrificed specimen under SEM. (A). Anterior body, ventral view; (B). Spinous chaetae in detail; (C). Final body, dorsal view.Abbreviations: dC = dorsal cirrus; Hor = horn; Pg = pygidium; Sc = Spinous chaeta." figureDoi="http://doi.org/10.5281/zenodo.10494437" httpUri="https://zenodo.org/record/10494437/files/figure.png" pageId="13" pageNumber="32">8C</figureCitation>
). Pygidial cirri missing.
</paragraph>
</subSubSection>
<subSubSection id="C31CFEEFDA16FFD5FF03F94AF8733E1B" pageId="13" pageNumber="32" type="discussion">
<paragraph id="8BB9AD64DA16FFD5FF03F94AF96F3BC2" blockId="13.[151,1437,150,1379]" pageId="13" pageNumber="32">
<emphasis id="B9727176DA16FFD5FF03F94AFC533B52" bold="true" box="[199,315,331,357]" pageId="13" pageNumber="32">Remarks.</emphasis>
The new species is close to
<taxonomicName id="4C06D6E7DA16FFD5FD40F94AFEC73B52" authority="(Hansen, 1879)" baseAuthorityName="Hansen" baseAuthorityYear="1879" box="[644,943,331,357]" class="Polychaeta" family="Scalibregmatidae" genus="Scalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parvum">
<emphasis id="B9727176DA16FFD5FD40F94AFF9F3B53" box="[644,759,331,356]" italics="true" pageId="13" pageNumber="32">P. parvum</emphasis>
(
<bibRefCitation id="EF97D095DA16FFD5FCC3F94AFEC03B52" author="Hansen, G. A." box="[775,936,331,357]" pageId="13" pageNumber="32" pagination="1 - 17" refId="ref10579" refString="Hansen, G. A. (1879) Annelider fra den norske Nordhavsexpedition i 1876. Nyt Magazin for Naturvidenskaberne. Christiania, 24 (1), 1 - 17." type="journal article" year="1879">Hansen, 1879</bibRefCitation>
)
</taxonomicName>
,
<taxonomicName id="4C06D6E7DA16FFD5FC79F94AF9813B52" authority="(Blake, 1981)" baseAuthorityName="Blake" baseAuthorityYear="1981" box="[957,1257,331,357]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="usarpium">
<emphasis id="B9727176DA16FFD5FC79F94AF92C3B53" box="[957,1092,331,356]" italics="true" pageId="13" pageNumber="32">P. usarpium</emphasis>
(
<bibRefCitation id="EF97D095DA16FFD5FB90F94AF9893B52" author="Blake, J. A." box="[1108,1249,331,357]" pageId="13" pageNumber="32" pagination="1131 - 1162" refId="ref9794" refString="Blake, J. A. (1981) The Scalibregmatidae (Annelida: Polychaeta) from South American and Antarctic Seas, collected chiefly during the cruises of the R / V Anton Bruun, R / V Hero and USNS Eltanin. Proceedings of the Biological Society of Washington, 94, 1131 - 1162. Available from: http: // www. biodiversitylibrary. org / item / 107603 (accessed 9 November 2023)" type="journal article" year="1981">Blake, 1981</bibRefCitation>
)
</taxonomicName>
, and
<taxonomicName id="4C06D6E7DA16FFD5FAECF94AFC583BBE" authority="(Blake, 2015)" baseAuthorityName="Blake" baseAuthorityYear="2015" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="palmeri">
<emphasis id="B9727176DA16FFD5FAECF94AF8F43B52" box="[1320,1436,331,357]" italics="true" pageId="13" pageNumber="32">P. palmeri</emphasis>
(
<bibRefCitation id="EF97D095DA16FFD5FF5BF96EFC413BBE" author="Blake, J. A." box="[159,297,366,393]" pageId="13" pageNumber="32" pagination="57 - 93" refId="ref9963" refString="Blake, J. A. (2015) New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma. Zootaxa, 4033 (1), 57 - 93. https: // doi. org / 10.11646 / zootaxa. 4033.1.3" type="journal article" year="2015">Blake, 2015</bibRefCitation>
)
</taxonomicName>
in the shape of prostomium, and body annulation. However,
<taxonomicName id="4C06D6E7DA16FFD5FC17F96EF92C3BBE" baseAuthorityName="Blake" baseAuthorityYear="2015" box="[979,1092,367,393]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="palmeri">
<emphasis id="B9727176DA16FFD5FC17F96EF92C3BBE" box="[979,1092,367,393]" italics="true" pageId="13" pageNumber="32">P. palmeri</emphasis>
</taxonomicName>
and
<taxonomicName id="4C06D6E7DA16FFD5FBBCF96EF9953BBF" baseAuthorityName="Blake" baseAuthorityYear="1981" box="[1144,1277,367,392]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="usarpium">
<emphasis id="B9727176DA16FFD5FBBCF96EF9953BBF" box="[1144,1277,367,392]" italics="true" pageId="13" pageNumber="32">P. usarpium</emphasis>
</taxonomicName>
possess lyrate chaetae from chaetiger 3, whereas in
<taxonomicName id="4C06D6E7DA16FFD5FD86F992FFAB3B9B" authority="Mendes &amp; Paiva &amp; Rizzo, 2024" authorityName="Mendes &amp; Paiva &amp; Rizzo" authorityYear="2024" box="[578,707,403,428]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parapari" status="sp. nov.">
<emphasis id="B9727176DA16FFD5FD86F992FFAB3B9B" box="[578,707,403,428]" italics="true" pageId="13" pageNumber="32">P. parapari</emphasis>
</taxonomicName>
<emphasis id="B9727176DA16FFD5FD0FF992FE4E3B9A" bold="true" box="[715,806,403,429]" pageId="13" pageNumber="32">
<taxonomicNameLabel id="A241CC0DDA16FFD5FD0FF992FE4E3B9A" box="[715,806,403,429]" pageId="13" pageNumber="32" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
and
<taxonomicName id="4C06D6E7DA16FFD5FC9BF992FEBA3B9B" baseAuthorityName="Hansen" baseAuthorityYear="1879" box="[863,978,403,428]" class="Polychaeta" family="Scalibregmatidae" genus="Scalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parvum">
<emphasis id="B9727176DA16FFD5FC9BF992FEBA3B9B" box="[863,978,403,428]" italics="true" pageId="13" pageNumber="32">P. parvum</emphasis>
</taxonomicName>
lyrate chaetae emerge from chaetiger 2. Interestingly,
<taxonomicName id="4C06D6E7DA16FFD5FEF7F9B6FCCE3BE7" baseAuthorityName="Hansen" baseAuthorityYear="1879" box="[307,422,439,464]" class="Polychaeta" family="Scalibregmatidae" genus="Scalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parvum">
<emphasis id="B9727176DA16FFD5FEF7F9B6FCCE3BE7" box="[307,422,439,464]" italics="true" pageId="13" pageNumber="32">P. parvum</emphasis>
</taxonomicName>
diverges morphologically from them by the presence of spinous chaetae with bifurcated tips. Members of all these species share lyrate chaetae with similar tynes ratio.
</paragraph>
<paragraph id="8BB9AD64DA16FFD5FF03F9FEFC1F396A" blockId="13.[151,1437,150,1379]" pageId="13" pageNumber="32">
Regarding the secondary body annulations,
<taxonomicName id="4C06D6E7DA16FFD5FD7EF9FEFE29382F" baseAuthorityName="Blake" baseAuthorityYear="1981" box="[698,833,511,536]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="usarpium">
<emphasis id="B9727176DA16FFD5FD7EF9FEFE29382F" box="[698,833,511,536]" italics="true" pageId="13" pageNumber="32">P. usarpium</emphasis>
</taxonomicName>
is unique in the genus due to its complex annulation pattern, being quadriannulate on anterior chaetigers and pentannulate on posterior chaetigers.
<taxonomicName id="4C06D6E7DA16FFD5FB04FA22FD933857" authority="Mendes &amp; Paiva &amp; Rizzo, 2024" authorityName="Mendes &amp; Paiva &amp; Rizzo" authorityYear="2024" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parapari" status="sp. nov.">
<emphasis id="B9727176DA16FFD5FB04FA22FD933857" italics="true" pageId="13" pageNumber="32">Pseudoscalibregma parapari</emphasis>
</taxonomicName>
<emphasis id="B9727176DA16FFD5FEC0FA46FC093856" bold="true" box="[260,353,583,609]" pageId="13" pageNumber="32">
<taxonomicNameLabel id="A241CC0DDA16FFD5FEC0FA46FC093856" box="[260,353,583,609]" pageId="13" pageNumber="32" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
chaetiger 1 is biannulated, chaetigers 2–3, triannulated, and quadriannulated from chaetiger 4 onwards. This pattern also differs
<emphasis id="B9727176DA16FFD5FDE2FA6AFFCA38B3" box="[550,674,619,644]" italics="true" pageId="13" pageNumber="32">
<taxonomicName id="4C06D6E7DA16FFD5FDE2FA6AFFF638B3" baseAuthorityName="Hansen" baseAuthorityYear="1879" box="[550,670,619,644]" class="Polychaeta" family="Scalibregmatidae" genus="Scalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parvum">P. parvum</taxonomicName>
,
</emphasis>
which have two rows of pads on notopodia plus a single row of pads separating superior and inferior transverse limits of chaetigers (
<bibRefCitation id="EF97D095DA16FFD5FC05FA8EF9C1389E" author="Bakken, T. &amp; Oug, E. &amp; Kongsrud, J. A." box="[961,1193,655,681]" pageId="13" pageNumber="32" pagination="101 - 117" refId="ref9660" refString="Bakken, T., Oug, E. &amp; Kongsrud, J. A. (2014) Occurrence and distribution of Pseudoscalibregma and Scalibregma (Annelida, Scalibregmatidae) in the deep Nordic Seas, with the description of Scalibregma hanseni n. sp. Zootaxa, 3753 (2), 101 - 117. https: // doi. org / 10.11646 / zootaxa. 3753.2.1" type="journal article" year="2014">
Bakken
<emphasis id="B9727176DA16FFD5FBE0FA8EF909389E" box="[1060,1121,655,681]" italics="true" pageId="13" pageNumber="32">et al.</emphasis>
2014
</bibRefCitation>
).
<taxonomicName id="4C06D6E7DA16FFD5FB04FA8EFD8638FA" baseAuthorityName="Blake" baseAuthorityYear="2015" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="palmeri">
<emphasis id="B9727176DA16FFD5FB04FA8EFD8638FA" italics="true" pageId="13" pageNumber="32">Pseudoscalibregma palmeri</emphasis>
</taxonomicName>
and
<taxonomicName id="4C06D6E7DA16FFD5FEE3FAB2FCC038FB" authority="Mendes &amp; Paiva &amp; Rizzo, 2024" authorityName="Mendes &amp; Paiva &amp; Rizzo" authorityYear="2024" box="[295,424,691,716]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parapari" status="sp. nov.">
<emphasis id="B9727176DA16FFD5FEE3FAB2FCC038FB" box="[295,424,691,716]" italics="true" pageId="13" pageNumber="32">P. parapari</emphasis>
</taxonomicName>
<emphasis id="B9727176DA16FFD5FE74FAB2FF6338FA" bold="true" box="[432,523,691,717]" pageId="13" pageNumber="32">
<taxonomicNameLabel id="A241CC0DDA16FFD5FE74FAB2FF6338FA" box="[432,523,691,717]" pageId="13" pageNumber="32" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
present a similar annulation pattern, differing on posterior chaetigers, which are quadriannulated in
<taxonomicName id="4C06D6E7DA16FFD5FEA9FAD6FC8438C7" authority="Mendes &amp; Paiva &amp; Rizzo, 2024" authorityName="Mendes &amp; Paiva &amp; Rizzo" authorityYear="2024" box="[365,492,727,752]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parapari" status="sp. nov.">
<emphasis id="B9727176DA16FFD5FEA9FAD6FC8438C7" box="[365,492,727,752]" italics="true" pageId="13" pageNumber="32">P. parapari</emphasis>
</taxonomicName>
<emphasis id="B9727176DA16FFD5FE36FAD6FF2238C6" bold="true" box="[498,586,727,753]" pageId="13" pageNumber="32">
<taxonomicNameLabel id="A241CC0DDA16FFD5FE36FAD6FF2238C6" box="[498,586,727,753]" pageId="13" pageNumber="32" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
and triannulated in
<emphasis id="B9727176DA16FFD5FCE2FAD6FEC838C6" box="[806,928,727,753]" italics="true" pageId="13" pageNumber="32">
<taxonomicName id="4C06D6E7DA16FFD5FCE2FAD6FEF438C6" baseAuthorityName="Blake" baseAuthorityYear="2015" box="[806,924,727,753]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="palmeri">P. palmeri</taxonomicName>
.
</emphasis>
Importantly, as mentioned above,
<taxonomicName id="4C06D6E7DA16FFD5FADAFAD6F8F538C7" authorityName="Mendes &amp; Paiva &amp; Rizzo" authorityYear="2024" box="[1310,1437,727,752]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parapari">
<emphasis id="B9727176DA16FFD5FADAFAD6F8F538C7" box="[1310,1437,727,752]" italics="true" pageId="13" pageNumber="32">P. parapari</emphasis>
</taxonomicName>
present a rounded prostomium, lyrate chaetae from chaetiger 2, and notopodial and neuropodial lobes differing in shape; whereas
<taxonomicName id="4C06D6E7DA16FFD5FE8FFB1EFCD7390E" baseAuthorityName="Blake" baseAuthorityYear="2015" box="[331,447,799,825]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="palmeri">
<emphasis id="B9727176DA16FFD5FE8FFB1EFCD7390E" box="[331,447,799,825]" italics="true" pageId="13" pageNumber="32">P. palmeri</emphasis>
</taxonomicName>
present a squared prostomium, lyrate chaetae from chaetiger 3 and parapodial lobes of same conical shape.
</paragraph>
<paragraph id="8BB9AD64DA16FFD5FF03FB64F8733E1B" blockId="13.[151,1437,150,1379]" pageId="13" pageNumber="32">
Despite of the absence of reproductive characters, all
<typeStatus id="54BD13C6DA16FFD5FCEEFB67FE3239B7" box="[810,858,870,896]" pageId="13" pageNumber="32">type</typeStatus>
specimens of
<taxonomicName id="4C06D6E7DA16FFD5FC3BFB67F9E83948" authority="Mendes &amp; Paiva &amp; Rizzo, 2024" authorityName="Mendes &amp; Paiva &amp; Rizzo" authorityYear="2024" box="[1023,1152,870,895]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parapari" status="sp. nov.">
<emphasis id="B9727176DA16FFD5FC3BFB67F9E83948" box="[1023,1152,870,895]" italics="true" pageId="13" pageNumber="32">P. parapari</emphasis>
</taxonomicName>
<emphasis id="B9727176DA16FFD5FB4CFB64F98B3948" bold="true" box="[1160,1251,869,895]" pageId="13" pageNumber="32">
<taxonomicNameLabel id="A241CC0DDA16FFD5FB4CFB64F98B3948" box="[1160,1251,869,895]" pageId="13" pageNumber="32" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
have at least 30 chaetigers, exceeding the 22–24 chaetiger stage (
<emphasis id="B9727176DA16FFD5FD6BFB89FF853996" box="[687,749,904,929]" italics="true" pageId="13" pageNumber="32">sensu</emphasis>
<bibRefCitation id="EF97D095DA16FFD5FD36FB89FE1D3995" author="Blake, J. A." box="[754,885,903,930]" pageId="13" pageNumber="32" pagination="57 - 93" refId="ref9963" refString="Blake, J. A. (2015) New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma. Zootaxa, 4033 (1), 57 - 93. https: // doi. org / 10.11646 / zootaxa. 4033.1.3" type="journal article" year="2015">Blake 2015</bibRefCitation>
).This information is relevant, because this species is relatively smaller than its congeners, but when a scalibregmatid with dorsal and ventral cirri on parapodia reach this number of chaetigers, it is probably out of the cryptic “
<taxonomicName id="4C06D6E7DA16FFD5FC8DFBCCF94D39D0" authorityName="Ashworth" authorityYear="1901" box="[841,1061,973,999]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="genus">
<emphasis id="B9727176DA16FFD5FC8DFBCCF94D39D0" box="[841,1061,973,999]" italics="true" pageId="13" pageNumber="32">Pseudoscalibregma</emphasis>
</taxonomicName>
-like” ontogenetic state observed by
<bibRefCitation id="EF97D095DA16FFD5FF79FBEEFC3E3E3D" author="Blake, J. A." box="[189,342,1007,1034]" pageId="13" pageNumber="32" pagination="57 - 93" refId="ref9963" refString="Blake, J. A. (2015) New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma. Zootaxa, 4033 (1), 57 - 93. https: // doi. org / 10.11646 / zootaxa. 4033.1.3" type="journal article" year="2015">Blake (2015)</bibRefCitation>
. Hence, important features such as the emergence order of lyrate chaetae, spinous chaetae and presence of branchial lobes on first chaetigers can be determined without confusing juveniles as adults.
</paragraph>
</subSubSection>
<subSubSection id="C31CFEEFDA16FFD5FF03FC35FFFE3E81" pageId="13" pageNumber="32" type="etymology">
<paragraph id="8BB9AD64DA16FFD5FF03FC35FFFE3E81" blockId="13.[151,1437,150,1379]" pageId="13" pageNumber="32">
<emphasis id="B9727176DA16FFD5FF03FC35FC263E79" bold="true" box="[199,334,1076,1102]" pageId="13" pageNumber="32">Etymology.</emphasis>
The specific epithet
<taxonomicName id="4C06D6E7DA16FFD5FDF2FC35FFC33E78" authorityName="Mendes &amp; Paiva &amp; Rizzo" authorityYear="2024" box="[566,683,1076,1103]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parapari">
“
<emphasis id="B9727176DA16FFD5FD86FC34FFC33E78" box="[578,683,1077,1103]" italics="true" pageId="13" pageNumber="32">parapari</emphasis>
</taxonomicName>
<emphasis id="B9727176DA16FFD5FD6FFC34FFDD3E78" box="[683,693,1077,1103]" italics="true" pageId="13" pageNumber="32">”</emphasis>
was chosen to honor the polychaete researcher Dr. Julio Parapar at Universidad Da Coruña (UDC,
<collectingCountry id="F311EDF4DA16FFD5FE32FC56FF523E46" box="[502,570,1111,1137]" name="Spain" pageId="13" pageNumber="32">Spain</collectingCountry>
), for his contributions to the polychaetes taxonomy, ecology, and morphology, and specially for his recent review on the family
<taxonomicName id="4C06D6E7DA16FFD5FD02FC78FEE33EA4" authorityName="Malmgren" authorityYear="1867" box="[710,907,1145,1171]" class="Polychaeta" family="Scalibregmatidae" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="family">Scalibregmatidae</taxonomicName>
, providing an updated list of valid species and directing important topics for future research.
</paragraph>
</subSubSection>
<subSubSection id="C31CFEEFDA16FFD5FF03FCBEFE5C3F54" pageId="13" pageNumber="32" type="biology_ecology">
<paragraph id="8BB9AD64DA16FFD5FF03FCBEFE5C3F54" blockId="13.[151,1437,150,1379]" pageId="13" pageNumber="32">
<emphasis id="B9727176DA16FFD5FF03FCBEFC443EEE" bold="true" box="[199,300,1215,1241]" pageId="13" pageNumber="32">Ecology.</emphasis>
Finally, except for
<taxonomicName id="4C06D6E7DA16FFD5FDC0FCBEFF1D3EEF" baseAuthorityName="Hansen" baseAuthorityYear="1879" box="[516,629,1215,1240]" class="Polychaeta" family="Scalibregmatidae" genus="Scalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parvum">
<emphasis id="B9727176DA16FFD5FDC0FCBEFF1D3EEF" box="[516,629,1215,1240]" italics="true" pageId="13" pageNumber="32">P. parvum</emphasis>
</taxonomicName>
from shallow records,
<taxonomicName id="4C06D6E7DA16FFD5FCB2FCBEFE933EEF" baseAuthorityName="Blake" baseAuthorityYear="1981" box="[886,1019,1215,1240]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="usarpium">
<emphasis id="B9727176DA16FFD5FCB2FCBEFE933EEF" box="[886,1019,1215,1240]" italics="true" pageId="13" pageNumber="32">P. usarpium</emphasis>
</taxonomicName>
,
<taxonomicName id="4C06D6E7DA16FFD5FBCCFCBEF9123EEF" baseAuthorityName="Blake" baseAuthorityYear="2015" box="[1032,1146,1214,1240]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="palmeri">
<emphasis id="B9727176DA16FFD5FBCCFCBEF9123EEF" box="[1032,1146,1214,1240]" italics="true" pageId="13" pageNumber="32">P. palmeri</emphasis>
</taxonomicName>
share similar bathymetric records, not exceeding the range of 500 to 2,000 meters deep. The new species
<taxonomicName id="4C06D6E7DA16FFD5FBE4FCE3F9C93ECC" authority="Mendes &amp; Paiva &amp; Rizzo, 2024" authorityName="Mendes &amp; Paiva &amp; Rizzo" authorityYear="2024" box="[1056,1185,1250,1275]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="parapari" status="sp. nov.">
<emphasis id="B9727176DA16FFD5FBE4FCE3F9C93ECC" box="[1056,1185,1250,1275]" italics="true" pageId="13" pageNumber="32">P. parapari</emphasis>
</taxonomicName>
<emphasis id="B9727176DA16FFD5FB6CFCE0F86B3ECC" bold="true" box="[1192,1283,1249,1275]" pageId="13" pageNumber="32">
<taxonomicNameLabel id="A241CC0DDA16FFD5FB6CFCE0F86B3ECC" box="[1192,1283,1249,1275]" pageId="13" pageNumber="32" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
was sampled from a bathymetric range varying from
<quantity id="4CFE0081DA16FFD5FD8BFD05FF8B3F29" box="[591,739,1284,1310]" metricMagnitude="3" metricUnit="m" metricValue="1.135" metricValueMax="1.3" metricValueMin="0.97" pageId="13" pageNumber="32" unit="m" value="1135.0" valueMax="1300.0" valueMin="970.0">970–1,300 m</quantity>
deep, on predominantly muddy sediments. Hence, this species also lies within the bathymetric interval of the congeners
<taxonomicName id="4C06D6E7DA16FFD5FCE6FD26FEC03F77" baseAuthorityName="Blake" baseAuthorityYear="1981" box="[802,936,1319,1344]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="usarpium">
<emphasis id="B9727176DA16FFD5FCE6FD26FEC03F77" box="[802,936,1319,1344]" italics="true" pageId="13" pageNumber="32">P. usarpium</emphasis>
</taxonomicName>
and
<emphasis id="B9727176DA16FFD5FC24FD26F9333F77" box="[992,1115,1318,1344]" italics="true" pageId="13" pageNumber="32">
<taxonomicName id="4C06D6E7DA16FFD5FC24FD26F93F3F77" baseAuthorityName="Blake" baseAuthorityYear="2015" box="[992,1111,1318,1344]" class="Polychaeta" family="Scalibregmatidae" genus="Pseudoscalibregma" kingdom="Animalia" pageId="13" pageNumber="32" phylum="Annelida" rank="species" species="palmeri">P. palmeri</taxonomicName>
,
</emphasis>
that are not abyssal species, but also do not occur in intertidal to shallow subtidal zones.
</paragraph>
</subSubSection>
</treatment>
</document>
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