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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1039.61098" ID-GBIF-Dataset="c1bdc338-0b7e-42b2-92d6-b6ba8a0be2cb" ID-PMC="PMC8163715" ID-Pensoft-Pub="1313-2970-1039-139" ID-Pensoft-UUID="CE0AE9A0941A5036BDBBB43C3C4B2B4A" ID-PubMed="34113206" ID-ZooBank="F2F861A533DF4B61827DEB71AB97E97F" ModsDocID="1313-2970-1039-139" checkinTime="1621628215386" checkinUser="pensoft" docAuthor="Grosse, Mael, Capa, Maria &amp; Bakken, Torkild" docDate="2021" docId="244692DABEAE5B02943649E89C490E06" docLanguage="en" docName="ZooKeys 1039: 139-176" docOrigin="ZooKeys 1039" docPubDate="2021-05-21" docSource="http://dx.doi.org/10.3897/zookeys.1039.61098" docTitle="Chaetozone pseudosetosa Grosse &amp; Capa &amp; Bakken 2021, sp. nov." docType="treatment" docUuid="8CAA7808-CB69-4983-874D-19A5FF982EFF" docUuidSource="ZooBank" docVersion="4" id="CE0AE9A0941A5036BDBBB43C3C4B2B4A" lastPageNumber="139" masterDocId="CE0AE9A0941A5036BDBBB43C3C4B2B4A" masterDocTitle="Describing the hidden species diversity of Chaetozone (Annelida, Cirratulidae) in the Norwegian Sea using morphological and molecular diagnostics" masterLastPageNumber="176" masterPageNumber="139" pageNumber="139" updateTime="1668152761992" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Describing the hidden species diversity of Chaetozone (Annelida, Cirratulidae) in the Norwegian Sea using morphological and molecular diagnostics</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Grosse, Mael</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-0977-1376</mods:nameIdentifier>
<mods:affiliation>University of the Balearic Island, Department of Biology, Ctra. Valldemossa km 7.5, Balearic Islands, Spain &amp; Norwegian University of Science and Technology, NTNU University Museum, Trondheim, Norway</mods:affiliation>
<mods:nameIdentifier type="email">maelgrosse@gmail.com</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Capa, Maria</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-5063-7961</mods:nameIdentifier>
<mods:affiliation>University of the Balearic Island, Department of Biology, Ctra. Valldemossa km 7.5, Balearic Islands, Spain &amp; Norwegian University of Science and Technology, NTNU University Museum, Trondheim, Norway</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Bakken, Torkild</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-5188-7305</mods:nameIdentifier>
<mods:affiliation>Norwegian University of Science and Technology, NTNU University Museum, Trondheim, Norway</mods:affiliation>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2021</mods:date>
<mods:detail type="pubDate">
<mods:number>2021-05-21</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>1039</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>139</mods:start>
<mods:end>176</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.1039.61098</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.1039.61098</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-1039-139</mods:identifier>
<mods:identifier type="ZooBank">F2F861A533DF4B61827DEB71AB97E97F</mods:identifier>
<mods:identifier type="Pensoft-UUID">CE0AE9A0941A5036BDBBB43C3C4B2B4A</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="182256074" LSID="urn:lsid:zoobank.org:act:8CAA7808-CB69-4983-874D-19A5FF982EFF" httpUri="http://treatment.plazi.org/id/244692DABEAE5B02943649E89C490E06" lastPageNumber="139" pageId="0" pageNumber="139">
<subSubSection pageId="0" pageNumber="139" type="nomenclature">
<paragraph pageId="0" pageNumber="139">
<taxonomicName LSID="http://zoobank.org/8CAA7808-CB69-4983-874D-19A5FF982EFF" authority="Grosse &amp; Capa &amp; Bakken, 2021" authorityName="Grosse &amp; Capa &amp; Bakken" authorityYear="2021" class="Polychaeta" family="Cirratulidae" genus="Chaetozone" higherTaxonomySource="treatment-meta" kingdom="Animalia" lsidName="Chaetozone pseudosetosa" order="Terebellida" pageId="0" pageNumber="139" phylum="Mollusca" rank="species" species="pseudosetosa" status="sp. nov.">Chaetozone pseudosetosa</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="139">sp. nov.</taxonomicNameLabel>
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Chaetozone pseudosetosa sp. nov., holotype ZMBN 125756 A holotype in ventral view, stained with Shirlastain A B holotype in dorsal view, stained with Shirlastain A. Abbreviations: br, branchiae; dGr, dorsal groove; per, peristomium; vGr, ventral groove; a star (*) indicates where parapodia were removed for DNA analyses." figureDoi="10.3897/zookeys.1039.61098.figure5" httpUri="https://binary.pensoft.net/fig/546233" pageId="0" pageNumber="139">Figures 5</figureCitation>
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Chaetozone pseudosetosa sp. nov. A paratype ZMBN 125780, SEM of anterior end in lateral view B paratype ZMBN 129644, SEM of anterior end in dorsal view C paratype NTNU-VM 74602, cross section of posterior segment D paratype ZMBN 125780, SEM neuropodial spines E paratype ZMBN 129644, SEM of notopodial capillary F Paratype ZMBN 129644, SEM of posterior neuropodia G paratype ZMBN 129643, SEM of pygidium. Abbreviations: br, branchiae; Ch, chaetiger; dCr, dorsal crest; dT, dorsal tentacle; nuO, nuchal organ; per, peristomium; pr, prostomium; pyg, pygidium; Seg, segment." figureDoi="10.3897/zookeys.1039.61098.figure6" httpUri="https://binary.pensoft.net/fig/546234" pageId="0" pageNumber="139">, 6</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="139" type="reference_group">
<paragraph pageId="0" pageNumber="139">
<taxonomicName authority="Grosse &amp; Capa &amp; Bakken, 2021" authorityName="Grosse &amp; Capa &amp; Bakken" authorityYear="2021" class="Polychaeta" family="Cirratulidae" genus="Chaetozone" higherTaxonomySource="treatment-meta" kingdom="Animalia" lsidName="Chaetozone" order="Terebellida" pageId="0" pageNumber="139" phylum="Mollusca" rank="genus" status="sp. nov.">Chaetozone</taxonomicName>
sp. 7
<bibRefCitation DOI="https://doi.org/10.1016/j.ympev.2020.106852" author="Grosse, M" journalOrPublisher="Molecular Ecology" pageId="0" pageNumber="139" refId="B26" refString="Grosse, M, Bakken, T, Nygren, A, Kongsrud, JA, Capa, M, 2020. Species delimitation analyses of NE Atlantic Chaetozone reveals hidden diversity among a common and abundant marine annelid. Molecular Phylogenetics and Evolution 149: e106852. https://doi.org/10.1016/j.ympev.2020.106852" title="Species delimitation analyses of NE Atlantic Chaetozone reveals hidden diversity among a common and abundant marine annelid. Molecular Phylogenetics and Evolution 149: e 106852." url="https://doi.org/10.1016/j.ympev.2020.106852" year="2020">Grosse et al. 2020</bibRefCitation>
: fig. 4.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="139" type="type locality">
<paragraph pageId="0" pageNumber="139">Type locality.</paragraph>
<paragraph pageId="0" pageNumber="139">
<normalizedToken originalValue="Drøbak">Drobak</normalizedToken>
, Oslofjorden, south of
<normalizedToken originalValue="Storskjær">Storskjaer</normalizedToken>
, Norway, 31 m depth.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="139" type="materials_examined">
<paragraph pageId="0" pageNumber="139">Material examined.</paragraph>
<paragraph pageId="0" pageNumber="139">
<materialsCitation collectingDate="2014-10-20" country="Norway" elevation="31" latitude="59.6562" location="Oslofjorden" longLatPrecision="6" longitude="10.6081" specimenCount="1" typeStatus="Holotype">
<emphasis bold="true" pageId="0" pageNumber="139">
<emphasis italics="true" pageId="0" pageNumber="139">
<typeStatus>Holotype</typeStatus>
</emphasis>
:
</emphasis>
<location LSID="urn:lsid:plazi:treatment:244692DABEAE5B02943649E89C490E06:1A7A929FFFAC716747ECFF8DA49534ED" country="Norway" latitude="59.6562" longLatPrecision="6" longitude="10.6081" name="Oslofjorden">Oslofjorden</location>
,
<collectingCountry name="Norway">Norway</collectingCountry>
<geoCoordinate degrees="59.6562" direction="north" orientation="latitude" precision="5" value="59.6562">59.6562°N</geoCoordinate>
,
<geoCoordinate degrees="10.6081" direction="east" orientation="longitude" precision="5" value="10.6081">10.6081°E</geoCoordinate>
;
<collectingDate value="2014-10-20">20 Oct. 2014</collectingDate>
;
<quantity metricMagnitude="1" metricUnit="m" metricValue="3.1" unit="m" value="31.0">
<elevation metricMagnitude="1" metricUnit="m" metricValue="3.1" unit="m" value="31.0">31 m</elevation>
</quantity>
; ZMBN125756
</materialsCitation>
.
<materialsCitation collectingDate="2014-10-21" country="Norway" elevation="106" latitude="59.6444" location="Oslofjorden" longLatPrecision="6" longitude="10.6192" specimenCount="1" typeStatus="Paratypes">
<emphasis bold="true" italics="true" pageId="0" pageNumber="139">
<typeStatus>Paratypes</typeStatus>
</emphasis>
:
<location LSID="urn:lsid:plazi:treatment:244692DABEAE5B02943649E89C490E06:9C6072A6339656B04BDFBEA79F445970" country="Norway" latitude="59.6444" longLatPrecision="6" longitude="10.6192" name="Oslofjorden">Oslofjorden</location>
,
<collectingCountry name="Norway">Norway</collectingCountry>
• 3 ind.;
<geoCoordinate degrees="59.6444" direction="north" orientation="latitude" precision="5" value="59.6444">59.6444°N</geoCoordinate>
,
<geoCoordinate degrees="10.6192" direction="east" orientation="longitude" precision="5" value="10.6192">10.6192°E</geoCoordinate>
;
<collectingDate value="2014-10-21">21 Oct. 2014</collectingDate>
;
<quantity metricMagnitude="2" metricUnit="m" metricValue="1.06" unit="m" value="106.0">
<elevation metricMagnitude="2" metricUnit="m" metricValue="1.06" unit="m" value="106.0">106 m</elevation>
</quantity>
</materialsCitation>
; NTNU- VM74516-74518 • 1 ind.;
<geoCoordinate degrees="59.05485" direction="north" orientation="latitude" precision="1" value="59.05485">59.05485°N</geoCoordinate>
,
<geoCoordinate degrees="10.250467" direction="east" orientation="longitude" precision="1" value="10.250467">10.250467°E</geoCoordinate>
;
<date value="2011-05-29">29 May 2011</date>
;
<quantity metricMagnitude="1" metricUnit="m" metricValue="7.0" unit="m" value="70.0">70 m</quantity>
; NTNU-VM74514 • 1 ind.;
<geoCoordinate degrees="59.89017" direction="north" orientation="latitude" precision="1" value="59.89017">59.89017°N</geoCoordinate>
,
<geoCoordinate degrees="10.75551" direction="east" orientation="longitude" precision="1" value="10.75551">10.75551°E</geoCoordinate>
;
<date value="2018-09-20">20 Sep. 2018</date>
;
<quantity metricMagnitude="1" metricUnit="m" metricValue="1.2" unit="m" value="12.0">12 m</quantity>
; NTNU-VM76534 • 1 ind.;
<geoCoordinate degrees="59.89731" direction="north" orientation="latitude" precision="1" value="59.89731">59.89731°N</geoCoordinate>
,
<geoCoordinate degrees="10.73703" direction="east" orientation="longitude" precision="1" value="10.73703">10.73703°E</geoCoordinate>
;
<date value="2018-09-20">20 Sep. 2018</date>
;
<quantity metricMagnitude="0" metricUnit="m" metricValue="8.0" unit="m" value="8.0">8 m</quantity>
;
<materialsCitation collectingDate="2014-06-08" country="Norway" elevation="76" latitude="59.28789" location="North Sea" longLatPrecision="1" longitude="5.32506" specimenCount="1" typeStatus="paratype">
NTNU-VM76547. -
<location LSID="urn:lsid:plazi:treatment:244692DABEAE5B02943649E89C490E06:CE52BF15016E8172058C1436EEBBC62B" country="Norway" latitude="59.28789" longLatPrecision="1" longitude="5.32506" name="North Sea">North Sea</location>
• 1 ind.;
<geoCoordinate degrees="59.28789" direction="north" orientation="latitude" precision="1" value="59.28789">59.28789°N</geoCoordinate>
,
<geoCoordinate degrees="5.32506" direction="east" orientation="longitude" precision="1" value="5.32506">5.32506°E</geoCoordinate>
;
<collectingDate value="2014-06-08">08 Jun. 2014</collectingDate>
;
<quantity metricMagnitude="1" metricUnit="m" metricValue="7.6" unit="m" value="76.0">
<elevation metricMagnitude="1" metricUnit="m" metricValue="7.6" unit="m" value="76.0">76 m</elevation>
</quantity>
</materialsCitation>
; ZMBN125790 • 1 ind.;
<geoCoordinate degrees="59.02985" direction="north" orientation="latitude" precision="1" value="59.02985">59.02985°N</geoCoordinate>
,
<geoCoordinate degrees="5.44881" direction="east" orientation="longitude" precision="1" value="5.44881">5.44881°E</geoCoordinate>
;
<date value="2014-06-10">10 Jun. 2014</date>
;
<quantity metricMagnitude="1" metricUnit="m" metricValue="5.9" unit="m" value="59.0">59 m</quantity>
; ZMBN125789 • 3 ind.;
<geoCoordinate degrees="60.269686" direction="north" orientation="latitude" precision="1" value="60.269688">60.269686°N</geoCoordinate>
,
<geoCoordinate degrees="5.197750" direction="east" orientation="longitude" precision="1" value="5.19775">5.197750°E</geoCoordinate>
;
<date value="2014-07-26">26 Jul. 2014</date>
;
<quantity metricMagnitude="2" metricUnit="m" metricValue="1.2" unit="m" value="120.0">120 m</quantity>
; NTNU-VM74525-74526, 74528 • 1 ind.;
<geoCoordinate degrees="59.76022" direction="north" orientation="latitude" precision="1" value="59.76022">59.76022°N</geoCoordinate>
,
<geoCoordinate degrees="5.49682" direction="east" orientation="longitude" precision="1" value="5.49682">5.49682°E</geoCoordinate>
;
<date value="2014-06-08">08 Jun. 2014</date>
;
<quantity metricMagnitude="1" metricUnit="m" metricValue="4.0" unit="m" value="40.0">40 m</quantity>
; ZMBN125787 • 1 ind.;
<geoCoordinate degrees="60.90389" direction="north" orientation="latitude" precision="1" value="60.90389">60.90389°N</geoCoordinate>
,
<geoCoordinate degrees="7.16813" direction="east" orientation="longitude" precision="1" value="7.16813">7.16813°E</geoCoordinate>
;
<date value="2012-11-17">17 Nov. 2012</date>
;
<quantity metricMagnitude="2" metricUnit="m" metricValue="1.15" unit="m" value="115.0">115 m</quantity>
; ZMBN125795 • 1 ind.;
<geoCoordinate degrees="58.24753" direction="north" orientation="latitude" precision="1" value="58.24753">58.24753°N</geoCoordinate>
,
<geoCoordinate degrees="6.53673" direction="east" orientation="longitude" precision="1" value="6.53673">6.53673°E</geoCoordinate>
;
<date value="2016-02-03">03 Feb. 2016</date>
;
<quantity metricMagnitude="2" metricUnit="m" metricValue="1.55" unit="m" value="155.0">155 m</quantity>
; ZMBN125824 • 1 ind.;
<geoCoordinate degrees="60.60332" direction="north" orientation="latitude" precision="1" value="60.60332">60.60332°N</geoCoordinate>
,
<geoCoordinate degrees="5.09513" direction="east" orientation="longitude" precision="1" value="5.09513">5.09513°E</geoCoordinate>
;
<date value="2017-03-06">6 Mar. 2017</date>
;
<quantity metricMagnitude="1" metricUnit="m" metricValue="9.4" unit="m" value="94.0">94 m</quantity>
;
<materialsCitation collectingDate="2018-02-07" country="Norway" elevation="77" latitude="63.44753" location="Norwegian Sea" longLatPrecision="1" longitude="10.6273" specimenCount="1" typeStatus="paratype">
ZMBN125780. -
<location LSID="urn:lsid:plazi:treatment:244692DABEAE5B02943649E89C490E06:9DB6B50F0295EBE7138F5EB71B96A692" country="Norway" latitude="63.44753" longLatPrecision="1" longitude="10.6273" name="Norwegian Sea">Norwegian Sea</location>
• 1 ind.;
<geoCoordinate degrees="63.44753" direction="north" orientation="latitude" precision="1" value="63.44753">63.44753°N</geoCoordinate>
,
<geoCoordinate degrees="10.62730" direction="east" orientation="longitude" precision="1" value="10.6273">10.62730°E</geoCoordinate>
;
<collectingDate value="2018-02-07">07 Feb. 2018</collectingDate>
;
<quantity metricMagnitude="1" metricUnit="m" metricValue="7.7" unit="m" value="77.0">
<elevation metricMagnitude="1" metricUnit="m" metricValue="7.7" unit="m" value="77.0">77 m</elevation>
</quantity>
</materialsCitation>
; NTNU-VM74602 • 1 ind.;
<geoCoordinate degrees="63.437891" direction="north" orientation="latitude" precision="1" value="63.43789">63.437891°N</geoCoordinate>
,
<geoCoordinate degrees="10.50624" direction="east" orientation="longitude" precision="1" value="10.50624">10.50624°E</geoCoordinate>
;
<date value="2018-09-04">04 Sep. 2018</date>
;
<quantity metricMagnitude="0" metricUnit="m" metricValue="4.0" unit="m" value="4.0">4 m</quantity>
;
<materialsCitation collectingDate="2014-04-16" country="Norway" elevation="126" latitude="70.262" location="Barents Sea" longLatPrecision="55" longitude="31.083834" specimenCount="1" typeStatus="paratype">
NTNU-VM75900. -
<location LSID="urn:lsid:plazi:treatment:244692DABEAE5B02943649E89C490E06:7ED7EFC61C519E0A3B2AC73AEBC3A22F" country="Norway" latitude="70.262" longLatPrecision="55" longitude="31.083834" name="Barents Sea">Barents Sea</location>
• 1 ind.;
<geoCoordinate degrees="70.262" direction="north" orientation="latitude" precision="55" value="70.262">70.262°N</geoCoordinate>
,
<geoCoordinate degrees="31.083833" direction="east" orientation="longitude" precision="1" value="31.083834">31.083833°E</geoCoordinate>
;
<collectingDate value="2014-04-16">16 Apr. 2014</collectingDate>
;
<quantity metricMagnitude="2" metricUnit="m" metricValue="1.26" unit="m" value="126.0">
<elevation metricMagnitude="2" metricUnit="m" metricValue="1.26" unit="m" value="126.0">126 m</elevation>
</quantity>
</materialsCitation>
;
<materialsCitation collectingDate="2021-01-01" collectingDateMax="2021-12-31" collectingDateMin="2021-01-01" country="Sweden" elevation="70" latitude="58.86667" location="Sweden" longLatPrecision="2872" longitude="11.1" specimenCount="1" typeStatus="paratype">
NTNU-VM74499. -
<collectingCountry name="Sweden">Sweden</collectingCountry>
• 2 ind.;
<geoCoordinate degrees="58.866667" direction="north" orientation="latitude" precision="1" value="58.86667">58.866667°N</geoCoordinate>
,
<geoCoordinate degrees="11.1" direction="east" orientation="longitude" precision="5555" value="11.1">11.1°E</geoCoordinate>
; 2005;
<quantity metricMagnitude="1" metricUnit="m" metricValue="7.0" unit="m" value="70.0">
<elevation metricMagnitude="1" metricUnit="m" metricValue="7.0" unit="m" value="70.0">70 m</elevation>
</quantity>
</materialsCitation>
; ZMBN129641, 129647 • 2 ind.;
<geoCoordinate degrees="58.8" direction="north" orientation="latitude" precision="5555" value="58.8">58.8°N</geoCoordinate>
,
<geoCoordinate degrees="11.1" direction="east" orientation="longitude" precision="5555" value="11.1">11.1°E</geoCoordinate>
;
<date value="2018-11">Nov. 2018</date>
;
<quantity metricMagnitude="1" metricUnit="m" metricValue="6.0" unit="m" value="60.0">60 m</quantity>
; ZMBN129643, ZMBN129644.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="139" type="diagnosis">
<paragraph pageId="0" pageNumber="139">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="139">
Peristomium with two large distinct annulations and dorsal crest; paired tentacles on posterior margin of peristomium; first branchiae on distinct segment 1 (achaetous); posterior segments developed in full cinctures with up to 20-26 spines per parapodia (Figs
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Chaetozone pseudosetosa sp. nov., holotype ZMBN 125756 A holotype in ventral view, stained with Shirlastain A B holotype in dorsal view, stained with Shirlastain A. Abbreviations: br, branchiae; dGr, dorsal groove; per, peristomium; vGr, ventral groove; a star (*) indicates where parapodia were removed for DNA analyses." figureDoi="10.3897/zookeys.1039.61098.figure5" httpUri="https://binary.pensoft.net/fig/546233" pageId="0" pageNumber="139">5</figureCitation>
,
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Chaetozone pseudosetosa sp. nov. A paratype ZMBN 125780, SEM of anterior end in lateral view B paratype ZMBN 129644, SEM of anterior end in dorsal view C paratype NTNU-VM 74602, cross section of posterior segment D paratype ZMBN 125780, SEM neuropodial spines E paratype ZMBN 129644, SEM of notopodial capillary F Paratype ZMBN 129644, SEM of posterior neuropodia G paratype ZMBN 129643, SEM of pygidium. Abbreviations: br, branchiae; Ch, chaetiger; dCr, dorsal crest; dT, dorsal tentacle; nuO, nuchal organ; per, peristomium; pr, prostomium; pyg, pygidium; Seg, segment." figureDoi="10.3897/zookeys.1039.61098.figure6" httpUri="https://binary.pensoft.net/fig/546234" pageId="0" pageNumber="139">6</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.1039.61098.figure5" httpUri="https://binary.pensoft.net/fig/546233" pageId="0" pageNumber="139" start="Figure 5" startId="F5">
<paragraph pageId="0" pageNumber="139">
<emphasis bold="true" pageId="0" pageNumber="139">Figure 5.</emphasis>
<taxonomicName authorityName="Grosse &amp; Capa &amp; Bakken" authorityYear="2021" class="Polychaeta" family="Cirratulidae" genus="Chaetozone" kingdom="Animalia" lsidName="Chaetozone pseudosetosa" order="Terebellida" pageId="0" pageNumber="139" phylum="Mollusca" rank="species" species="pseudosetosa">
<emphasis italics="true" pageId="0" pageNumber="139">Chaetozone pseudosetosa</emphasis>
</taxonomicName>
sp. nov., holotype ZMBN125756
<emphasis bold="true" pageId="0" pageNumber="139">A</emphasis>
holotype in ventral view, stained with Shirlastain A
<emphasis bold="true" pageId="0" pageNumber="139">B</emphasis>
holotype in dorsal view, stained with Shirlastain A. Abbreviations: br, branchiae; dGr, dorsal groove; per, peristomium; vGr, ventral groove; a star (*) indicates where parapodia were removed for DNA analyses.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="139" type="molecular diagnosis">
<paragraph pageId="0" pageNumber="139">Molecular diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="139">COI: 223: C; 471-472: CA; 349-350: TT (based on 45 COI sequences).</paragraph>
<caption doi="10.3897/zookeys.1039.61098.figure6" httpUri="https://binary.pensoft.net/fig/546234" pageId="0" pageNumber="139" start="Figure 6" startId="F6">
<paragraph pageId="0" pageNumber="139">
<emphasis bold="true" pageId="0" pageNumber="139">Figure 6.</emphasis>
<taxonomicName authorityName="Grosse &amp; Capa &amp; Bakken" authorityYear="2021" class="Polychaeta" family="Cirratulidae" genus="Chaetozone" kingdom="Animalia" lsidName="Chaetozone pseudosetosa" order="Terebellida" pageId="0" pageNumber="139" phylum="Mollusca" rank="species" species="pseudosetosa">
<emphasis italics="true" pageId="0" pageNumber="139">Chaetozone pseudosetosa</emphasis>
</taxonomicName>
sp. nov.
<emphasis bold="true" pageId="0" pageNumber="139">A</emphasis>
paratype ZMBN125780, SEM of anterior end in lateral view
<emphasis bold="true" pageId="0" pageNumber="139">B</emphasis>
paratype ZMBN129644, SEM of anterior end in dorsal view
<emphasis bold="true" pageId="0" pageNumber="139">C</emphasis>
paratype NTNU-VM74602, cross section of posterior segment
<emphasis bold="true" pageId="0" pageNumber="139">D</emphasis>
paratype ZMBN125780, SEM neuropodial spines
<emphasis bold="true" pageId="0" pageNumber="139">E</emphasis>
paratype ZMBN129644, SEM of notopodial capillary
<emphasis bold="true" pageId="0" pageNumber="139">F</emphasis>
Paratype ZMBN129644, SEM of posterior neuropodia
<emphasis bold="true" pageId="0" pageNumber="139">G</emphasis>
paratype ZMBN129643, SEM of pygidium. Abbreviations: br, branchiae; Ch, chaetiger; dCr, dorsal crest; dT, dorsal tentacle; nuO, nuchal organ; per, peristomium; pr, prostomium; pyg, pygidium; Seg, segment.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="139" type="description">
<paragraph pageId="0" pageNumber="139">Description.</paragraph>
<paragraph pageId="0" pageNumber="139">
A medium to large species, holotype incomplete, with 78 segments (70-106), 16.5 mm long (12-20 mm), up to 1.2 mm wide (Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Chaetozone pseudosetosa sp. nov., holotype ZMBN 125756 A holotype in ventral view, stained with Shirlastain A B holotype in dorsal view, stained with Shirlastain A. Abbreviations: br, branchiae; dGr, dorsal groove; per, peristomium; vGr, ventral groove; a star (*) indicates where parapodia were removed for DNA analyses." figureDoi="10.3897/zookeys.1039.61098.figure5" httpUri="https://binary.pensoft.net/fig/546233" pageId="0" pageNumber="139">5</figureCitation>
). Colour in ethanol white to light tan. Body elongate, wider in midbody segments, narrowing anteriorly and posteriorly; circular to oval in cross section. Anterior first 15-20 segments 5-6
<normalizedToken originalValue="×">x</normalizedToken>
wider than long, progressively lengthening 3
<normalizedToken originalValue="×">x</normalizedToken>
longer posteriorly (Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Chaetozone pseudosetosa sp. nov., holotype ZMBN 125756 A holotype in ventral view, stained with Shirlastain A B holotype in dorsal view, stained with Shirlastain A. Abbreviations: br, branchiae; dGr, dorsal groove; per, peristomium; vGr, ventral groove; a star (*) indicates where parapodia were removed for DNA analyses." figureDoi="10.3897/zookeys.1039.61098.figure5" httpUri="https://binary.pensoft.net/fig/546233" pageId="0" pageNumber="139">5</figureCitation>
). Thin, shallow dorsal groove from segment 10-15. Distinct ventral groove along most of body (Fig.
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Chaetozone pseudosetosa sp. nov., holotype ZMBN 125756 A holotype in ventral view, stained with Shirlastain A B holotype in dorsal view, stained with Shirlastain A. Abbreviations: br, branchiae; dGr, dorsal groove; per, peristomium; vGr, ventral groove; a star (*) indicates where parapodia were removed for DNA analyses." figureDoi="10.3897/zookeys.1039.61098.figure5" httpUri="https://binary.pensoft.net/fig/546233" pageId="0" pageNumber="139">5</figureCitation>
).
</paragraph>
<paragraph pageId="0" pageNumber="139">
Prostomium short, long as two third of peristomium, conical to triangular, tapering to rounded anterior tip, without annulations; eyespots absent; nuchal organs as narrow slits at posterior margin of prostomium (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Chaetozone pseudosetosa sp. nov. A paratype ZMBN 125780, SEM of anterior end in lateral view B paratype ZMBN 129644, SEM of anterior end in dorsal view C paratype NTNU-VM 74602, cross section of posterior segment D paratype ZMBN 125780, SEM neuropodial spines E paratype ZMBN 129644, SEM of notopodial capillary F Paratype ZMBN 129644, SEM of posterior neuropodia G paratype ZMBN 129643, SEM of pygidium. Abbreviations: br, branchiae; Ch, chaetiger; dCr, dorsal crest; dT, dorsal tentacle; nuO, nuchal organ; per, peristomium; pr, prostomium; pyg, pygidium; Seg, segment." figureDoi="10.3897/zookeys.1039.61098.figure6" httpUri="https://binary.pensoft.net/fig/546234" pageId="0" pageNumber="139">6A, B</figureCitation>
). Peristomium as long as wide, with two large rings of similar length, distinct laterally, weakly distinct or invisible dorsally on dorsal crest; dorsal crest little to well developed, covering all peristomium, slightly overlapping prostomium anteriorly, extending posteriorly between dorsal tentacles, up to anterior margin of chaetiger 1 (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Chaetozone pseudosetosa sp. nov. A paratype ZMBN 125780, SEM of anterior end in lateral view B paratype ZMBN 129644, SEM of anterior end in dorsal view C paratype NTNU-VM 74602, cross section of posterior segment D paratype ZMBN 125780, SEM neuropodial spines E paratype ZMBN 129644, SEM of notopodial capillary F Paratype ZMBN 129644, SEM of posterior neuropodia G paratype ZMBN 129643, SEM of pygidium. Abbreviations: br, branchiae; Ch, chaetiger; dCr, dorsal crest; dT, dorsal tentacle; nuO, nuchal organ; per, peristomium; pr, prostomium; pyg, pygidium; Seg, segment." figureDoi="10.3897/zookeys.1039.61098.figure6" httpUri="https://binary.pensoft.net/fig/546234" pageId="0" pageNumber="139">6A, B</figureCitation>
). Dorsal tentacles arising from posterior margin of peristomium, well separated (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Chaetozone pseudosetosa sp. nov. A paratype ZMBN 125780, SEM of anterior end in lateral view B paratype ZMBN 129644, SEM of anterior end in dorsal view C paratype NTNU-VM 74602, cross section of posterior segment D paratype ZMBN 125780, SEM neuropodial spines E paratype ZMBN 129644, SEM of notopodial capillary F Paratype ZMBN 129644, SEM of posterior neuropodia G paratype ZMBN 129643, SEM of pygidium. Abbreviations: br, branchiae; Ch, chaetiger; dCr, dorsal crest; dT, dorsal tentacle; nuO, nuchal organ; per, peristomium; pr, prostomium; pyg, pygidium; Seg, segment." figureDoi="10.3897/zookeys.1039.61098.figure6" httpUri="https://binary.pensoft.net/fig/546234" pageId="0" pageNumber="139">6A, B</figureCitation>
). First pair of branchiae arising from segment 1 (achaetous), posterior to dorsal tentacles (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Chaetozone pseudosetosa sp. nov. A paratype ZMBN 125780, SEM of anterior end in lateral view B paratype ZMBN 129644, SEM of anterior end in dorsal view C paratype NTNU-VM 74602, cross section of posterior segment D paratype ZMBN 125780, SEM neuropodial spines E paratype ZMBN 129644, SEM of notopodial capillary F Paratype ZMBN 129644, SEM of posterior neuropodia G paratype ZMBN 129643, SEM of pygidium. Abbreviations: br, branchiae; Ch, chaetiger; dCr, dorsal crest; dT, dorsal tentacle; nuO, nuchal organ; per, peristomium; pr, prostomium; pyg, pygidium; Seg, segment." figureDoi="10.3897/zookeys.1039.61098.figure6" httpUri="https://binary.pensoft.net/fig/546234" pageId="0" pageNumber="139">6A, B</figureCitation>
). Second pair of branchiae arising from chaetiger 1, dorsally and slightly posterior to notopodia. Subsequent branchiae similarly placed. Branchiae or branchial scars on most chaetigers until development of cinctures.
</paragraph>
<paragraph pageId="0" pageNumber="139">
Parapodia as low mounds or ridges in anterior and middle segments, progressively developing into high, elevated membranes and into complete cinctures from segment 63 (50-85) (Figs
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Chaetozone pseudosetosa sp. nov., holotype ZMBN 125756 A holotype in ventral view, stained with Shirlastain A B holotype in dorsal view, stained with Shirlastain A. Abbreviations: br, branchiae; dGr, dorsal groove; per, peristomium; vGr, ventral groove; a star (*) indicates where parapodia were removed for DNA analyses." figureDoi="10.3897/zookeys.1039.61098.figure5" httpUri="https://binary.pensoft.net/fig/546233" pageId="0" pageNumber="139">5</figureCitation>
,
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Chaetozone pseudosetosa sp. nov. A paratype ZMBN 125780, SEM of anterior end in lateral view B paratype ZMBN 129644, SEM of anterior end in dorsal view C paratype NTNU-VM 74602, cross section of posterior segment D paratype ZMBN 125780, SEM neuropodial spines E paratype ZMBN 129644, SEM of notopodial capillary F Paratype ZMBN 129644, SEM of posterior neuropodia G paratype ZMBN 129643, SEM of pygidium. Abbreviations: br, branchiae; Ch, chaetiger; dCr, dorsal crest; dT, dorsal tentacle; nuO, nuchal organ; per, peristomium; pr, prostomium; pyg, pygidium; Seg, segment." figureDoi="10.3897/zookeys.1039.61098.figure6" httpUri="https://binary.pensoft.net/fig/546234" pageId="0" pageNumber="139">6C, F</figureCitation>
). 6-11 short capillaries per neuro- and notopodia throughout, smooth; 2-4 long natatory-like capillaries per notopodia from segment 20 or 21 to 70-72, up to 1.5
<normalizedToken originalValue="×">x</normalizedToken>
longer than body width, smooth (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Chaetozone pseudosetosa sp. nov. A paratype ZMBN 125780, SEM of anterior end in lateral view B paratype ZMBN 129644, SEM of anterior end in dorsal view C paratype NTNU-VM 74602, cross section of posterior segment D paratype ZMBN 125780, SEM neuropodial spines E paratype ZMBN 129644, SEM of notopodial capillary F Paratype ZMBN 129644, SEM of posterior neuropodia G paratype ZMBN 129643, SEM of pygidium. Abbreviations: br, branchiae; Ch, chaetiger; dCr, dorsal crest; dT, dorsal tentacle; nuO, nuchal organ; per, peristomium; pr, prostomium; pyg, pygidium; Seg, segment." figureDoi="10.3897/zookeys.1039.61098.figure6" httpUri="https://binary.pensoft.net/fig/546234" pageId="0" pageNumber="139">6E</figureCitation>
). 8-13 spines per neuro- and notopodia, from segment 42-54 in neuropodia and segment 46-54 in notopodia, unidentate, sigmoid, rarely slightly crossing dorsally in posterior cinctures (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Chaetozone pseudosetosa sp. nov. A paratype ZMBN 125780, SEM of anterior end in lateral view B paratype ZMBN 129644, SEM of anterior end in dorsal view C paratype NTNU-VM 74602, cross section of posterior segment D paratype ZMBN 125780, SEM neuropodial spines E paratype ZMBN 129644, SEM of notopodial capillary F Paratype ZMBN 129644, SEM of posterior neuropodia G paratype ZMBN 129643, SEM of pygidium. Abbreviations: br, branchiae; Ch, chaetiger; dCr, dorsal crest; dT, dorsal tentacle; nuO, nuchal organ; per, peristomium; pr, prostomium; pyg, pygidium; Seg, segment." figureDoi="10.3897/zookeys.1039.61098.figure6" httpUri="https://binary.pensoft.net/fig/546234" pageId="0" pageNumber="139">6C, D, F</figureCitation>
). Alternating capillaries usually between all spines, of similar length of longer than spines.
</paragraph>
<paragraph pageId="0" pageNumber="139">
Pygidium with terminal anus and with small rounded ventral lobe (Fig.
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Chaetozone pseudosetosa sp. nov. A paratype ZMBN 125780, SEM of anterior end in lateral view B paratype ZMBN 129644, SEM of anterior end in dorsal view C paratype NTNU-VM 74602, cross section of posterior segment D paratype ZMBN 125780, SEM neuropodial spines E paratype ZMBN 129644, SEM of notopodial capillary F Paratype ZMBN 129644, SEM of posterior neuropodia G paratype ZMBN 129643, SEM of pygidium. Abbreviations: br, branchiae; Ch, chaetiger; dCr, dorsal crest; dT, dorsal tentacle; nuO, nuchal organ; per, peristomium; pr, prostomium; pyg, pygidium; Seg, segment." figureDoi="10.3897/zookeys.1039.61098.figure6" httpUri="https://binary.pensoft.net/fig/546234" pageId="0" pageNumber="139">6G</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="139" type="methylene blue staining pattern">
<paragraph pageId="0" pageNumber="139">Methylene blue staining pattern.</paragraph>
<paragraph pageId="0" pageNumber="139">A moderately distinctive pattern. Methyl blue stains the peristomium lightly in transversal bands. Dorsum does not stain. Transversal lines of dark blue dots are present along anterior segments, more or less dense but never strong, not covering the whole length of the segments, creating a light stripe pattern anteriorly. Rows of dark blue dots also present on most mid and posterior parapodia, not conspicuous and only lateral in midbody segments.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="139" type="etymology">
<paragraph pageId="0" pageNumber="139">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="139">
This species is named
<taxonomicName authorityName="Grosse &amp; Capa &amp; Bakken" authorityYear="2021" class="Polychaeta" family="Cirratulidae" genus="Chaetozone" kingdom="Animalia" lsidName="Chaetozone pseudosetosa" order="Terebellida" pageId="0" pageNumber="139" phylum="Mollusca" rank="species" species="pseudosetosa">
<emphasis italics="true" pageId="0" pageNumber="139">Chaetozone pseudosetosa</emphasis>
</taxonomicName>
because it looks identical to
<taxonomicName lsidName="C. setosa" pageId="0" pageNumber="139" rank="species" species="setosa">
<emphasis italics="true" pageId="0" pageNumber="139">C. setosa</emphasis>
</taxonomicName>
and has been identified as such until now.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="139" type="remarks">
<paragraph pageId="0" pageNumber="139">Remarks.</paragraph>
<paragraph pageId="0" pageNumber="139">
Although this species is morphologically indistinguishable from
<taxonomicName lsidName="C. setosa" pageId="0" pageNumber="139" rank="species" species="setosa">
<emphasis italics="true" pageId="0" pageNumber="139">C. setosa</emphasis>
</taxonomicName>
, it is a distinct species, and thus we felt it was important to name it. Cryptic species are important to take into account (
<bibRefCitation DOI="https://doi.org/10.1111/zsc.12044" author="Nygren, A" journalOrPublisher="Zoologica Scripta" pageId="0" pageNumber="139" pagination="172 - 183" refId="B38" refString="Nygren, A, 2014. Cryptic polychaete diversity: a review. Zoologica Scripta 43: 172 - 183, DOI: https://doi.org/10.1111/zsc.12044" title="Cryptic polychaete diversity: a review." url="https://doi.org/10.1111/zsc.12044" volume="43" year="2014">Nygren 2014</bibRefCitation>
), which is difficult to do if they are not named, do not have a type, and are not diagnosed either morphologically or molecularly. In the absence of diagnostic morphological characters to distinguish it from
<taxonomicName lsidName="C. setosa" pageId="0" pageNumber="139" rank="species" species="setosa">
<emphasis italics="true" pageId="0" pageNumber="139">C. setosa</emphasis>
</taxonomicName>
, molecular diagnostic characters can be of help (
<bibRefCitation DOI="https://doi.org/10.1016/j.ympev.2010.10.010" author="Nygren, A" journalOrPublisher="Molecular Phylogenetics and Evolution" pageId="0" pageNumber="139" pagination="132 - 141" refId="B39" refString="Nygren, A, Pleijel, F, 2011. From one to ten in a single stroke - resolving the European Eumida sanguinea (Phyllodocidae, Annelida) species complex. Molecular Phylogenetics and Evolution 58: 132 - 141, DOI: https://doi.org/10.1016/j.ympev.2010.10.010" title="From one to ten in a single stroke - resolving the European Eumida sanguinea (Phyllodocidae, Annelida) species complex." url="https://doi.org/10.1016/j.ympev.2010.10.010" volume="58" year="2011">Nygren and Pleijel 2011</bibRefCitation>
;
<bibRefCitation DOI="https://doi.org/10.3897/zookeys.992.55977" author="Parapar, J" journalOrPublisher="ZooKeys" pageId="0" pageNumber="139" pagination="1 - 58" refId="B44" refString="Parapar, J, Capa, M, Nygren, A, Moreira, J, 2020. To name but a few: descriptions of five new species of Terebellides (Annelida, Trichobranchidae) from the North East Atlantic. ZooKeys 992: 1 - 58, DOI: https://doi.org/10.3897/zookeys.992.55977" title="To name but a few: descriptions of five new species of Terebellides (Annelida, Trichobranchidae) from the North East Atlantic." url="https://doi.org/10.3897/zookeys.992.55977" volume="992" year="2020">Parapar et al. 2020</bibRefCitation>
). In particular,
<taxonomicName lsidName="C. setosa" pageId="0" pageNumber="139" rank="species" species="setosa">
<emphasis italics="true" pageId="0" pageNumber="139">C. setosa</emphasis>
</taxonomicName>
is known as a bioindicator and distinguishing between
<taxonomicName lsidName="C. setosa" pageId="0" pageNumber="139" rank="species" species="setosa">
<emphasis italics="true" pageId="0" pageNumber="139">C. setosa</emphasis>
</taxonomicName>
and
<taxonomicName lsidName="C. pseudosetosa" pageId="0" pageNumber="139" rank="species" species="pseudosetosa">
<emphasis italics="true" pageId="0" pageNumber="139">C. pseudosetosa</emphasis>
</taxonomicName>
sp. nov. can be important in that regard.
</paragraph>
<paragraph pageId="0" pageNumber="139">
<taxonomicName authorityName="Grosse &amp; Capa &amp; Bakken" authorityYear="2021" class="Polychaeta" family="Cirratulidae" genus="Chaetozone" kingdom="Animalia" lsidName="Chaetozone pseudosetosa" order="Terebellida" pageId="0" pageNumber="139" phylum="Mollusca" rank="species" species="pseudosetosa">
<emphasis italics="true" pageId="0" pageNumber="139">Chaetozone pseudosetosa</emphasis>
</taxonomicName>
sp. nov. COI distance with other species in the area mostly ranges from 20% to 25%, with a minimum of 8% with
<taxonomicName authorityName="Malmgren" authorityYear="1867" class="Polychaeta" family="Cirratulidae" genus="Chaetozone" kingdom="Animalia" lsidName="Chaetozone setosa" order="Terebellida" pageId="0" pageNumber="139" phylum="Mollusca" rank="species" species="setosa">
<emphasis italics="true" pageId="0" pageNumber="139">Chaetozone setosa</emphasis>
</taxonomicName>
(Table
<tableCitation captionStart="Table 2" captionStartId="T2" captionText="Table 2. COI p-distances between and within Norwegian Chaetozone species. The number of base differences per site from averaging over all sequence pairs within each group are shown. Species described and discussed in this paper are denoted with an &quot; ° &quot;." httpUri="http://table.plazi.org/id/2F53ECA24C510685DFC059FF9116B1D4" pageId="0" pageNumber="139" tableUuid="2F53ECA24C510685DFC059FF9116B1D4">2</tableCitation>
).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="139" type="distribution">
<paragraph pageId="0" pageNumber="139">Distribution.</paragraph>
<paragraph pageId="0" pageNumber="139">
Norwegian coast and shelf, Skagerrak, North Sea, 4-160 m depth. One specimen is recorded from Finnmark, which means it may be sympatric with
<taxonomicName lsidName="C. setosa" pageId="0" pageNumber="139" rank="species" species="setosa">
<emphasis italics="true" pageId="0" pageNumber="139">C. setosa</emphasis>
</taxonomicName>
in this area.
</paragraph>
</subSubSection>
</treatment>
</document>