299 lines
34 KiB
XML
299 lines
34 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1137.86150" ID-Pensoft-Pub="1313-2970-1137-33" ID-Pensoft-UUID="038180F7C47A5FCBBD907481025DF21B" ID-ZooBank="9407DC6EB6B046AFA9C7F8DDCF542457" ModsDocID="1313-2970-1137-33" checkinTime="1671892186869" checkinUser="pensoft" docAuthor="Neal, Lenka, Wiklund, Helena, Gunton, Laetitia M., Rabone, Muriel, Bribiesca-Contreras, Guadalupe, Dahlgren, Thomas G. & Glover, Adrian G." docDate="2022" docId="B0F2724CFF6E503BA683A437C524C606" docLanguage="en" docName="ZooKeys 1137: 33-74" docOrigin="ZooKeys 1137" docPubDate="2022-12-22" docSource="http://dx.doi.org/10.3897/zookeys.1137.86150" docTitle="Euphrosinopsis halli Neal & Wiklund & Gunton & Rabone & Bribiesca-Contreras & Dahlgren & Glover 2022, sp. nov." docType="treatment" docUuid="83A9C528-4FBE-4836-82DC-C31BDA5C2B09" docUuidSource="ZooBank" docVersion="2" id="038180F7C47A5FCBBD907481025DF21B" lastPageNumber="33" masterDocId="038180F7C47A5FCBBD907481025DF21B" masterDocTitle="Abyssal fauna of polymetallic nodule exploration areas, eastern Clarion-Clipperton Zone, central Pacific Ocean: Amphinomidae and Euphrosinidae (Annelida, Amphinomida)" masterLastPageNumber="74" masterPageNumber="33" pageNumber="33" updateTime="1671892489011" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Abyssal fauna of polymetallic nodule exploration areas, eastern Clarion-Clipperton Zone, central Pacific Ocean: Amphinomidae and Euphrosinidae (Annelida, Amphinomida)</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Neal, Lenka</mods:namePart>
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<mods:affiliation>Life Sciences Department, Natural History Museum, London SW 7 5 BD, UK</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Wiklund, Helena</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-8252-3504</mods:nameIdentifier>
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<mods:affiliation>Life Sciences Department, Natural History Museum, London SW 7 5 BD, UK & Department of Marine Sciences, University of Gothenburg, Box 463, 40530 Gothenburg, Sweden & Gothenburg Global Biodiversity Centre, Box 463, 40530 Gothenburg, Sweden</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Gunton, Laetitia M.</mods:namePart>
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<mods:affiliation>Australian Museum Research Institute, 1 William Street, Sydney NSW 2010, Australia</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Rabone, Muriel</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-8351-2313</mods:nameIdentifier>
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<mods:affiliation>Life Sciences Department, Natural History Museum, London SW 7 5 BD, UK</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Bribiesca-Contreras, Guadalupe</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-8163-8724</mods:nameIdentifier>
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<mods:affiliation>Life Sciences Department, Natural History Museum, London SW 7 5 BD, UK</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Dahlgren, Thomas G.</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-6854-2031</mods:nameIdentifier>
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<mods:affiliation>Department of Marine Sciences, University of Gothenburg, Box 463, 40530 Gothenburg, Sweden & Gothenburg Global Biodiversity Centre, Box 463, 40530 Gothenburg, Sweden & NORCE Norwegian Research Centre, Bergen, Norway</mods:affiliation>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Glover, Adrian G.</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-9489-074X</mods:nameIdentifier>
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<mods:affiliation>Life Sciences Department, Natural History Museum, London SW 7 5 BD, UK</mods:affiliation>
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<mods:nameIdentifier type="email">a.glover@nhm.ac.uk</mods:nameIdentifier>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>ZooKeys</mods:title>
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</mods:titleInfo>
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||
<mods:part>
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<mods:date>2022</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2022-12-22</mods:number>
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||
</mods:detail>
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<mods:detail type="volume">
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<mods:number>1137</mods:number>
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||
</mods:detail>
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<mods:extent unit="page">
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<mods:start>33</mods:start>
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<mods:end>74</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/zookeys.1137.86150</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.1137.86150</mods:identifier>
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||
<mods:identifier type="Pensoft-Pub">1313-2970-1137-33</mods:identifier>
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<mods:identifier type="ZooBank">9407DC6EB6B046AFA9C7F8DDCF542457</mods:identifier>
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<mods:identifier type="Pensoft-UUID">038180F7C47A5FCBBD907481025DF21B</mods:identifier>
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||
</mods:mods>
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||
<subSection pageId="0" pageNumber="33" type="systematics section">
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<treatment LSID="urn:lsid:zoobank.org:act:83A9C528-4FBE-4836-82DC-C31BDA5C2B09" httpUri="http://treatment.plazi.org/id/B0F2724CFF6E503BA683A437C524C606" lastPageNumber="33" pageId="0" pageNumber="33">
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<subSubSection pageId="0" pageNumber="33" type="nomenclature">
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<paragraph pageId="0" pageNumber="33">
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<taxonomicName LSID="https://zoobank.org/83A9C528-4FBE-4836-82DC-C31BDA5C2B09" authority="Neal & Wiklund & Gunton & Rabone & Bribiesca-Contreras & Dahlgren & Glover, 2022" authorityName="Neal & Wiklund & Gunton & Rabone & Bribiesca-Contreras & Dahlgren & Glover" authorityYear="2022" class="Polychaeta" family="Euphrosinidae" genus="Euphrosinopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Euphrosinopsis halli" order="Amphinomida" pageId="0" pageNumber="33" phylum="Annelida" rank="species" species="halli" status="sp. nov.">Euphrosinopsis halli</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="33">sp. nov.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="33" type="description">
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<paragraph pageId="0" pageNumber="33">
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<figureCitation captionStart="Figure 15" captionStartId="F15" captionText="Figure 15. Diagrammatic representation of prostomial (A-C) and parapodial appendages from mid-body chaetigers (D, E) of CCZ-collected Euphrosinidae species (relative lengths preserved, but not drawn to scale) A Euphrosinella georgievae sp. nov. B Euphrosinopsis ahearni sp. nov. C Euphrosinopsis halli sp. nov. D Euphrosinella georgievae sp. nov. E Euphrosinopsis ahearni sp. nov. F Euphrosinopsis halli sp. nov. Abbreviations: P - palps, La - lateral antennae, Ma - median antenna, Car - caruncle, E - eyes, DC - dorsal cirrus, LC - lateral cirrus, VC - ventral cirrus, Br - branchiae." figureDoi="10.3897/zookeys.1137.86150.figure15" httpUri="https://binary.pensoft.net/fig/786215" pageId="0" pageNumber="33">Figs 15C</figureCitation>
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<figureCitation captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Euphrosinopsis halli sp. nov. A preserved holotype NHMUK ANEA. 2022.642, eye spots visible B holotype NHMUK ANEA. 2022.642 stained with Shirlastain, showing caruncle (car) and median antenna (Ma) C specimen NHMUK ANEA. 2022.641 stained with Shirlastain, showing branchiae (Br) and dorsal cirri (Dc) and lateral cirrus (Lc) D, E ringent chaetae from specimen NHMUK ANEA. 2022.641. Scale bars: 500 µm (A, C); 25 µm (D); 50 µm (E). Abbreviations: Ma - median antenna, Car - caruncle, Br - branchiae, Dc - dorsal cirrus, Lc - lateral cirrus." figureDoi="10.3897/zookeys.1137.86150.figure20" httpUri="https://binary.pensoft.net/fig/786220" pageId="0" pageNumber="33">, 20A-E</figureCitation>
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<figureCitation captionStart="Figure 21" captionStartId="F21" captionText="Figure 21. Euphrosinopsis halli sp. nov. (holotype NHMUK ANEA. 2022.642) A long and short furcate notochaetae B faint serration of long prong (marked by arrow) C smooth shafts of dorsalmost notochaetae D shafts with file-like teeth of middle chaetae E shafts with file-like teeth of ventralmost chaetae. Scale bar: 250 µm." figureDoi="10.3897/zookeys.1137.86150.figure21" httpUri="https://binary.pensoft.net/fig/786221" pageId="0" pageNumber="33">, 21 A-E</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="33" type="materials_examined">
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<paragraph pageId="0" pageNumber="33">Material examined.</paragraph>
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<paragraph pageId="0" pageNumber="33">
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NHM_0779, NHMUK ANEA 2022.641, coll.
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<date value="2015-02-20">20/02/2015</date>
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, EBS,
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<geoCoordinate degrees="12.53717" direction="north" orientation="latitude" precision="1" value="12.53717">12.53717</geoCoordinate>
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,
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<geoCoordinate degrees="116.60417" direction="west" orientation="longitude" precision="1" value="-116.60417">-116.60417</geoCoordinate>
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,
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<quantity metricMagnitude="3" metricUnit="m" metricValue="4.425" unit="m" value="4425.0">4425 m</quantity>
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, UK-1, http://data.nhm.ac.uk/object/1a683870-d904-4c2c-bf1a-a34ead0a42fc; NHM_4339 (
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<typeStatus>holotype</typeStatus>
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), NHMUK ANEA 2022.642, coll.
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<date value="2020-03-11">11/03/2020</date>
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, box core,
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<geoCoordinate degrees="12.17997" direction="north" orientation="latitude" precision="1" value="12.17997">12.17997</geoCoordinate>
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,
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<geoCoordinate degrees="117.065277" direction="west" orientation="longitude" precision="1" value="-117.06528">-117.065277</geoCoordinate>
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,
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<quantity metricMagnitude="3" metricUnit="m" metricValue="4.117" unit="m" value="4117.0">4117 m</quantity>
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, UK-1, http://data.nhm.ac.uk/object/670dfd34-338d-4edc-8856-b0a9a728efc9; NHM_6018 (
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<typeStatus>paratype</typeStatus>
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), NHMUK ANEA 2022.643; coll.
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<date value="2020-11-13">13/11/2020</date>
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, box core,
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<geoCoordinate degrees="10.35780" direction="north" orientation="latitude" precision="1" value="10.3578">10.35780</geoCoordinate>
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,
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<geoCoordinate degrees="117.15931" direction="west" orientation="longitude" precision="1" value="-117.15931">-117.15931</geoCoordinate>
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,
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<quantity metricMagnitude="3" metricUnit="m" metricValue="4.284" unit="m" value="4284.0">4284 m</quantity>
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, NORI-D, http://data.nhm.ac.uk/object/ab26e2ea-ab87-4013-8106-e817c0485cc9.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="33" type="diagnosis">
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<paragraph pageId="0" pageNumber="33">Diagnosis.</paragraph>
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<paragraph pageId="0" pageNumber="33">
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<emphasis bold="true" italics="true" pageId="0" pageNumber="33">Holotype</emphasis>
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(NHMUK ANEA.2022.642) complete (except for tissue sampled for DNA), 1.3 mm long and 0.75 mm wide without chaetae for 11 chaetigers.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="33">Paratype</emphasis>
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(NHMUK ANEA.2022.643) complete (except for tissue sampled for DNA), 1.5 mm long and 0.75 mm wide for 12 chaetigers. Body short, oval, flattened, pale yellow in alcohol (Fig.
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<figureCitation captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Euphrosinopsis halli sp. nov. A preserved holotype NHMUK ANEA. 2022.642, eye spots visible B holotype NHMUK ANEA. 2022.642 stained with Shirlastain, showing caruncle (car) and median antenna (Ma) C specimen NHMUK ANEA. 2022.641 stained with Shirlastain, showing branchiae (Br) and dorsal cirri (Dc) and lateral cirrus (Lc) D, E ringent chaetae from specimen NHMUK ANEA. 2022.641. Scale bars: 500 µm (A, C); 25 µm (D); 50 µm (E). Abbreviations: Ma - median antenna, Car - caruncle, Br - branchiae, Dc - dorsal cirrus, Lc - lateral cirrus." figureDoi="10.3897/zookeys.1137.86150.figure20" httpUri="https://binary.pensoft.net/fig/786220" pageId="0" pageNumber="33">20A</figureCitation>
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). Prostomium longer than wide, with 5 prostomial appendages (Fig.
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<figureCitation captionStart="Figure 15" captionStartId="F15" captionText="Figure 15. Diagrammatic representation of prostomial (A-C) and parapodial appendages from mid-body chaetigers (D, E) of CCZ-collected Euphrosinidae species (relative lengths preserved, but not drawn to scale) A Euphrosinella georgievae sp. nov. B Euphrosinopsis ahearni sp. nov. C Euphrosinopsis halli sp. nov. D Euphrosinella georgievae sp. nov. E Euphrosinopsis ahearni sp. nov. F Euphrosinopsis halli sp. nov. Abbreviations: P - palps, La - lateral antennae, Ma - median antenna, Car - caruncle, E - eyes, DC - dorsal cirrus, LC - lateral cirrus, VC - ventral cirrus, Br - branchiae." figureDoi="10.3897/zookeys.1137.86150.figure15" httpUri="https://binary.pensoft.net/fig/786215" pageId="0" pageNumber="33">15C</figureCitation>
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). Pair of short slender palps; pair of slender lateral antenna; median antenna of caruncle with long thick ceratophore and slender cirrus of similar length to caruncle (Figs
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<figureCitation captionStart="Figure 15" captionStartId="F15" captionText="Figure 15. Diagrammatic representation of prostomial (A-C) and parapodial appendages from mid-body chaetigers (D, E) of CCZ-collected Euphrosinidae species (relative lengths preserved, but not drawn to scale) A Euphrosinella georgievae sp. nov. B Euphrosinopsis ahearni sp. nov. C Euphrosinopsis halli sp. nov. D Euphrosinella georgievae sp. nov. E Euphrosinopsis ahearni sp. nov. F Euphrosinopsis halli sp. nov. Abbreviations: P - palps, La - lateral antennae, Ma - median antenna, Car - caruncle, E - eyes, DC - dorsal cirrus, LC - lateral cirrus, VC - ventral cirrus, Br - branchiae." figureDoi="10.3897/zookeys.1137.86150.figure15" httpUri="https://binary.pensoft.net/fig/786215" pageId="0" pageNumber="33">15C</figureCitation>
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,
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<figureCitation captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Euphrosinopsis halli sp. nov. A preserved holotype NHMUK ANEA. 2022.642, eye spots visible B holotype NHMUK ANEA. 2022.642 stained with Shirlastain, showing caruncle (car) and median antenna (Ma) C specimen NHMUK ANEA. 2022.641 stained with Shirlastain, showing branchiae (Br) and dorsal cirri (Dc) and lateral cirrus (Lc) D, E ringent chaetae from specimen NHMUK ANEA. 2022.641. Scale bars: 500 µm (A, C); 25 µm (D); 50 µm (E). Abbreviations: Ma - median antenna, Car - caruncle, Br - branchiae, Dc - dorsal cirrus, Lc - lateral cirrus." figureDoi="10.3897/zookeys.1137.86150.figure20" httpUri="https://binary.pensoft.net/fig/786220" pageId="0" pageNumber="33">20B</figureCitation>
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). Caruncle as oval lobe reaching to chaetiger 2, mostly free of body wall, with median keel and two pairs of lateral ridges, median keel slightly thicker than the lateral ones (Fig.
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<figureCitation captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Euphrosinopsis halli sp. nov. A preserved holotype NHMUK ANEA. 2022.642, eye spots visible B holotype NHMUK ANEA. 2022.642 stained with Shirlastain, showing caruncle (car) and median antenna (Ma) C specimen NHMUK ANEA. 2022.641 stained with Shirlastain, showing branchiae (Br) and dorsal cirri (Dc) and lateral cirrus (Lc) D, E ringent chaetae from specimen NHMUK ANEA. 2022.641. Scale bars: 500 µm (A, C); 25 µm (D); 50 µm (E). Abbreviations: Ma - median antenna, Car - caruncle, Br - branchiae, Dc - dorsal cirrus, Lc - lateral cirrus." figureDoi="10.3897/zookeys.1137.86150.figure20" httpUri="https://binary.pensoft.net/fig/786220" pageId="0" pageNumber="33">20B</figureCitation>
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). Single pair of large, spherical eyes, deeply embedded, lateral to median antenna and caruncle (Figs
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<figureCitation captionStart="Figure 15" captionStartId="F15" captionText="Figure 15. Diagrammatic representation of prostomial (A-C) and parapodial appendages from mid-body chaetigers (D, E) of CCZ-collected Euphrosinidae species (relative lengths preserved, but not drawn to scale) A Euphrosinella georgievae sp. nov. B Euphrosinopsis ahearni sp. nov. C Euphrosinopsis halli sp. nov. D Euphrosinella georgievae sp. nov. E Euphrosinopsis ahearni sp. nov. F Euphrosinopsis halli sp. nov. Abbreviations: P - palps, La - lateral antennae, Ma - median antenna, Car - caruncle, E - eyes, DC - dorsal cirrus, LC - lateral cirrus, VC - ventral cirrus, Br - branchiae." figureDoi="10.3897/zookeys.1137.86150.figure15" httpUri="https://binary.pensoft.net/fig/786215" pageId="0" pageNumber="33">15C</figureCitation>
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,
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<figureCitation captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Euphrosinopsis halli sp. nov. A preserved holotype NHMUK ANEA. 2022.642, eye spots visible B holotype NHMUK ANEA. 2022.642 stained with Shirlastain, showing caruncle (car) and median antenna (Ma) C specimen NHMUK ANEA. 2022.641 stained with Shirlastain, showing branchiae (Br) and dorsal cirri (Dc) and lateral cirrus (Lc) D, E ringent chaetae from specimen NHMUK ANEA. 2022.641. Scale bars: 500 µm (A, C); 25 µm (D); 50 µm (E). Abbreviations: Ma - median antenna, Car - caruncle, Br - branchiae, Dc - dorsal cirrus, Lc - lateral cirrus." figureDoi="10.3897/zookeys.1137.86150.figure20" httpUri="https://binary.pensoft.net/fig/786220" pageId="0" pageNumber="33">20A</figureCitation>
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).
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</paragraph>
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<caption doi="10.3897/zookeys.1137.86150.figure20" httpUri="https://binary.pensoft.net/fig/786220" pageId="0" pageNumber="33" start="Figure 20" startId="F20">
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<paragraph pageId="0" pageNumber="33">
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<emphasis bold="true" pageId="0" pageNumber="33">Figure 20.</emphasis>
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<taxonomicName authorityName="Neal & Wiklund & Gunton & Rabone & Bribiesca-Contreras & Dahlgren & Glover" authorityYear="2022" class="Polychaeta" family="Euphrosinidae" genus="Euphrosinopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Euphrosinopsis halli" order="Amphinomida" pageId="0" pageNumber="33" phylum="Annelida" rank="species" species="halli">
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<emphasis italics="true" pageId="0" pageNumber="33">Euphrosinopsis halli</emphasis>
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</taxonomicName>
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sp. nov.
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<emphasis bold="true" pageId="0" pageNumber="33">A</emphasis>
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preserved holotype NHMUK ANEA.2022.642, eye spots visible
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<emphasis bold="true" pageId="0" pageNumber="33">B</emphasis>
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holotype NHMUK ANEA.2022.642 stained with Shirlastain, showing caruncle (car) and median antenna (Ma)
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<emphasis bold="true" pageId="0" pageNumber="33">C</emphasis>
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specimen NHMUK ANEA.2022.641 stained with Shirlastain, showing branchiae (Br) and dorsal cirri (Dc) and lateral cirrus (Lc)
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<emphasis bold="true" pageId="0" pageNumber="33">D, E</emphasis>
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ringent chaetae from specimen NHMUK ANEA.2022.641. Scale bars: 500
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(
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<emphasis bold="true" pageId="0" pageNumber="33">A, C</emphasis>
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); 25
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(
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<emphasis bold="true" pageId="0" pageNumber="33">D</emphasis>
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); 50
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<normalizedToken originalValue="µm">µm</normalizedToken>
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(
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<emphasis bold="true" pageId="0" pageNumber="33">E</emphasis>
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). Abbreviations: Ma - median antenna, Car - caruncle, Br - branchiae, Dc - dorsal cirrus, Lc - lateral cirrus.
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</paragraph>
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</caption>
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<paragraph pageId="0" pageNumber="33">
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Parapodia biramous, two rami well separated. With parapodial appendages observed dorso-ventrally as follow (Figs
|
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<figureCitation captionStart="Figure 15" captionStartId="F15" captionText="Figure 15. Diagrammatic representation of prostomial (A-C) and parapodial appendages from mid-body chaetigers (D, E) of CCZ-collected Euphrosinidae species (relative lengths preserved, but not drawn to scale) A Euphrosinella georgievae sp. nov. B Euphrosinopsis ahearni sp. nov. C Euphrosinopsis halli sp. nov. D Euphrosinella georgievae sp. nov. E Euphrosinopsis ahearni sp. nov. F Euphrosinopsis halli sp. nov. Abbreviations: P - palps, La - lateral antennae, Ma - median antenna, Car - caruncle, E - eyes, DC - dorsal cirrus, LC - lateral cirrus, VC - ventral cirrus, Br - branchiae." figureDoi="10.3897/zookeys.1137.86150.figure15" httpUri="https://binary.pensoft.net/fig/786215" pageId="0" pageNumber="33">15F</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Euphrosinopsis halli sp. nov. A preserved holotype NHMUK ANEA. 2022.642, eye spots visible B holotype NHMUK ANEA. 2022.642 stained with Shirlastain, showing caruncle (car) and median antenna (Ma) C specimen NHMUK ANEA. 2022.641 stained with Shirlastain, showing branchiae (Br) and dorsal cirri (Dc) and lateral cirrus (Lc) D, E ringent chaetae from specimen NHMUK ANEA. 2022.641. Scale bars: 500 µm (A, C); 25 µm (D); 50 µm (E). Abbreviations: Ma - median antenna, Car - caruncle, Br - branchiae, Dc - dorsal cirrus, Lc - lateral cirrus." figureDoi="10.3897/zookeys.1137.86150.figure20" httpUri="https://binary.pensoft.net/fig/786220" pageId="0" pageNumber="33">20C</figureCitation>
|
||
): long slender dorsal cirrus, often curved into S-shape in middle chaetigers; single cirriform branchia attached laterally to dorsal cirrus; lateral cirrus similar to branchia in form, but more robust; slender cirriform ventral cirrus.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="33">
|
||
Chaetae fragile, prone to breakage, of two main types: 1. Numerous, bifurcate chaetae arranged in approximately three rows in notopodia; their shafts of various length and thickness (Fig.
|
||
<figureCitation captionStart="Figure 21" captionStartId="F21" captionText="Figure 21. Euphrosinopsis halli sp. nov. (holotype NHMUK ANEA. 2022.642) A long and short furcate notochaetae B faint serration of long prong (marked by arrow) C smooth shafts of dorsalmost notochaetae D shafts with file-like teeth of middle chaetae E shafts with file-like teeth of ventralmost chaetae. Scale bar: 250 µm." figureDoi="10.3897/zookeys.1137.86150.figure21" httpUri="https://binary.pensoft.net/fig/786221" pageId="0" pageNumber="33">21A</figureCitation>
|
||
); development of filelike teeth on shafts ranging from smooth (Fig.
|
||
<figureCitation captionStart="Figure 21" captionStartId="F21" captionText="Figure 21. Euphrosinopsis halli sp. nov. (holotype NHMUK ANEA. 2022.642) A long and short furcate notochaetae B faint serration of long prong (marked by arrow) C smooth shafts of dorsalmost notochaetae D shafts with file-like teeth of middle chaetae E shafts with file-like teeth of ventralmost chaetae. Scale bar: 250 µm." figureDoi="10.3897/zookeys.1137.86150.figure21" httpUri="https://binary.pensoft.net/fig/786221" pageId="0" pageNumber="33">21C</figureCitation>
|
||
) to well developed (Fig.
|
||
<figureCitation captionStart="Figure 21" captionStartId="F21" captionText="Figure 21. Euphrosinopsis halli sp. nov. (holotype NHMUK ANEA. 2022.642) A long and short furcate notochaetae B faint serration of long prong (marked by arrow) C smooth shafts of dorsalmost notochaetae D shafts with file-like teeth of middle chaetae E shafts with file-like teeth of ventralmost chaetae. Scale bar: 250 µm." figureDoi="10.3897/zookeys.1137.86150.figure21" httpUri="https://binary.pensoft.net/fig/786221" pageId="0" pageNumber="33">21D, E</figureCitation>
|
||
); their prongs variable in length with short furcate chaetae in anterior tier having the ratio of short to long prong ranging from 1:2-2.5 (where possible to establish), the prong ratio of longest chaetae in the mid tear ranging from 1:3.5-4 (where possible to establish); prongs mainly smooth or with extremely faint serration only visible under high magnification (Fig.
|
||
<figureCitation captionStart="Figure 21" captionStartId="F21" captionText="Figure 21. Euphrosinopsis halli sp. nov. (holotype NHMUK ANEA. 2022.642) A long and short furcate notochaetae B faint serration of long prong (marked by arrow) C smooth shafts of dorsalmost notochaetae D shafts with file-like teeth of middle chaetae E shafts with file-like teeth of ventralmost chaetae. Scale bar: 250 µm." figureDoi="10.3897/zookeys.1137.86150.figure21" httpUri="https://binary.pensoft.net/fig/786221" pageId="0" pageNumber="33">21B</figureCitation>
|
||
). 2. Ringent chaetae (sensu
|
||
<bibRefCitation DOI="https://doi.org/10.1029/AR058p0093" author="Kudenov, JD" journalOrPublisher="Antarctic Research Series, Biology of the Antarctic Seas XXII" pageId="0" pageNumber="33" pagination="93 - 150" refId="B64" refString="Kudenov, JD, 1993. Amphinomidae and Euphrosinidae (Annelida: Polychaeta) principally from Antarctica, the Southern Ocean, and Subantarctic regions. Antarctic Research Series, Biology of the Antarctic Seas XXII 58: 93 - 150, DOI: https://doi.org/10.1029/AR058p0093" title="Amphinomidae and Euphrosinidae (Annelida: Polychaeta) principally from Antarctica, the Southern Ocean, and Subantarctic regions." url="https://doi.org/10.1029/AR058p0093" volume="58" year="1993">Kudenov 1993</bibRefCitation>
|
||
) present in notopodia only, few in numbers (ca. 5 per notopodium), composed of two curved prongs of unequal length and thickness, both with indistinct serration, the long prong distally with slender elongated tip, short prong broad and distally rounded (Fig.
|
||
<figureCitation captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Euphrosinopsis halli sp. nov. A preserved holotype NHMUK ANEA. 2022.642, eye spots visible B holotype NHMUK ANEA. 2022.642 stained with Shirlastain, showing caruncle (car) and median antenna (Ma) C specimen NHMUK ANEA. 2022.641 stained with Shirlastain, showing branchiae (Br) and dorsal cirri (Dc) and lateral cirrus (Lc) D, E ringent chaetae from specimen NHMUK ANEA. 2022.641. Scale bars: 500 µm (A, C); 25 µm (D); 50 µm (E). Abbreviations: Ma - median antenna, Car - caruncle, Br - branchiae, Dc - dorsal cirrus, Lc - lateral cirrus." figureDoi="10.3897/zookeys.1137.86150.figure20" httpUri="https://binary.pensoft.net/fig/786220" pageId="0" pageNumber="33">20D, E</figureCitation>
|
||
). Neurochaetae similar less numerous, thinner, and shorter than notochaetae, all bifurcate, prongs appearing smooth, often broken off. Pygidium with pair of cirri resembling cylindrical tube feet.
|
||
</paragraph>
|
||
<caption doi="10.3897/zookeys.1137.86150.figure21" httpUri="https://binary.pensoft.net/fig/786221" pageId="0" pageNumber="33" start="Figure 21" startId="F21">
|
||
<paragraph pageId="0" pageNumber="33">
|
||
<emphasis bold="true" pageId="0" pageNumber="33">Figure 21.</emphasis>
|
||
<taxonomicName authorityName="Neal & Wiklund & Gunton & Rabone & Bribiesca-Contreras & Dahlgren & Glover" authorityYear="2022" class="Polychaeta" family="Euphrosinidae" genus="Euphrosinopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Euphrosinopsis halli" order="Amphinomida" pageId="0" pageNumber="33" phylum="Annelida" rank="species" species="halli">
|
||
<emphasis italics="true" pageId="0" pageNumber="33">Euphrosinopsis halli</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. (holotype NHMUK ANEA.2022.642)
|
||
<emphasis bold="true" pageId="0" pageNumber="33">A</emphasis>
|
||
long and short furcate notochaetae
|
||
<emphasis bold="true" pageId="0" pageNumber="33">B</emphasis>
|
||
faint serration of long prong (marked by arrow)
|
||
<emphasis bold="true" pageId="0" pageNumber="33">C</emphasis>
|
||
smooth shafts of dorsalmost notochaetae
|
||
<emphasis bold="true" pageId="0" pageNumber="33">D</emphasis>
|
||
shafts with file-like teeth of middle chaetae
|
||
<emphasis bold="true" pageId="0" pageNumber="33">E</emphasis>
|
||
shafts with file-like teeth of ventralmost chaetae. Scale bar: 250
|
||
<normalizedToken originalValue="µm">µm</normalizedToken>
|
||
.
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="33" type="molecular information">
|
||
<paragraph pageId="0" pageNumber="33">Molecular information.</paragraph>
|
||
<paragraph pageId="0" pageNumber="33">
|
||
Specimen NHMUK ANEA.2022.641, was sequenced for 16S and 18S while paratype NHMUK ANEA.2022.643 and holotype NHMUK ANEA.2022.642 were sequenced for 16S only (Table
|
||
<tableCitation captionStart="Table 1" captionStartId="T1" captionText="Table 1. List of taxa presented in this paper - family, DNA taxonomy ID (a species-level identification based on combined DNA and morphological evidence), cruise record number, GUID (Global Unique Identifier link to data record at http: // data. nhm. ac. uk), NHMUK registration number (NHMUK), Molecular Collection facility (MCf) sample ID number (MCF no.) and NCBI GenBank accession numbers (COI / 16 S / 18 S AK no.) for successfully sequenced genetic markers. GenBank numbers for phylogenetic analysis data downloaded from GenBank are presented in Suppl. material 1." httpUri="http://table.plazi.org/id/975BF9BB1DC46F3BF5AFB3BB09D145F3" pageId="0" pageNumber="33" tableUuid="975BF9BB1DC46F3BF5AFB3BB09D145F3">1</tableCitation>
|
||
). There were no identical sequences for 16S on GenBank. The relationships between
|
||
<taxonomicName authorityName="Detinova" authorityYear="1985" class="Polychaeta" family="Amphinomidae" genus="Euphrosinella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Euphrosinella" order="Amphinomida" pageId="0" pageNumber="33" phylum="Annelida" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="33">Euphrosinella</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName authorityName="Kudenov" authorityYear="1993" class="Polychaeta" family="Euphrosinidae" genus="Euphrosinopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Euphrosinopsis" order="Amphinomida" pageId="0" pageNumber="33" phylum="Annelida" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="33">Euphrosinopsis</emphasis>
|
||
</taxonomicName>
|
||
in the phylogenetic tree is unresolved (Fig.
|
||
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Majority-rule consensus trees from the Bayesian analyses with posterior probability values on nodes. Taxon names highlighted in blue are news species or new sequences for already known species. A Amphinomidae phylogenetic tree using a combined datasets for COI, 16 S, and 18 S with 26 terminal taxa of which Euphrosine foliosa (Euphrosinidae) was used as a root B Euphrosinidae phylogenetic tree using a combined datasets for 16 S and 18 S with nine terminal taxa of which Paramphinome jeffreysii (Amphinomidae) was used as a root." figureDoi="10.3897/zookeys.1137.86150.figure5" httpUri="https://binary.pensoft.net/fig/786205" pageId="0" pageNumber="33">5B</figureCitation>
|
||
). As COI sequencing was not successful in this study, all euphrosinid species are represented by only 16S and 18S, and in the case of the species from GenBank, only 16S.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="33" type="remarks">
|
||
<paragraph pageId="0" pageNumber="33">Remarks.</paragraph>
|
||
<paragraph pageId="0" pageNumber="33">
|
||
CCZ species agrees well with the genus
|
||
<taxonomicName authorityName="Kudenov" authorityYear="1993" class="Polychaeta" family="Euphrosinidae" genus="Euphrosinopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Euphrosinopsis" order="Amphinomida" pageId="0" pageNumber="33" phylum="Annelida" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="33">Euphrosinopsis</emphasis>
|
||
</taxonomicName>
|
||
in having five prostomial appendages, caruncle partially free from the body wall and the presence of large, deeply embedded eyes lateral to median antenna and caruncle. However, this species shows differences from all known species in this genus, suggesting it belongs to a new species. The presence of single, small, unbranched cirriform branchia per parapodium suggest affiliation with
|
||
<taxonomicName class="Polychaeta" kingdom="Animalia" lsidName="E. crassiseta" order="Amphinomida" pageId="0" pageNumber="33" phylum="Annelida" rank="species" species="crassiseta">
|
||
<emphasis italics="true" pageId="0" pageNumber="33">E. crassiseta</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName class="Polychaeta" kingdom="Animalia" lsidName="E. horsti" order="Amphinomida" pageId="0" pageNumber="33" phylum="Annelida" rank="species" species="horsti">
|
||
<emphasis italics="true" pageId="0" pageNumber="33">E. horsti</emphasis>
|
||
</taxonomicName>
|
||
, which share the same character. However, the new species differs from
|
||
<taxonomicName class="Polychaeta" kingdom="Animalia" lsidName="E. crassiseta" order="Amphinomida" pageId="0" pageNumber="33" phylum="Annelida" rank="species" species="crassiseta">
|
||
<emphasis italics="true" pageId="0" pageNumber="33">E. crassiseta</emphasis>
|
||
</taxonomicName>
|
||
in possessing the ringent chaetae and lacking the coarse serration on neurochaetae. The most similar species,
|
||
<taxonomicName class="Polychaeta" kingdom="Animalia" lsidName="E. horsti" order="Amphinomida" pageId="0" pageNumber="33" phylum="Annelida" rank="species" species="horsti">
|
||
<emphasis italics="true" pageId="0" pageNumber="33">E. horsti</emphasis>
|
||
</taxonomicName>
|
||
can be easily separated by having anal cirri fused instead of typical cylindrical tube feet as in the new species. For comparison with another new
|
||
<taxonomicName authorityName="Kudenov" authorityYear="1993" class="Polychaeta" family="Euphrosinidae" genus="Euphrosinopsis" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Euphrosinopsis" order="Amphinomida" pageId="0" pageNumber="33" phylum="Annelida" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="33">Euphrosinopsis</emphasis>
|
||
</taxonomicName>
|
||
species also described in this study see the remarks section for
|
||
<taxonomicName class="Polychaeta" kingdom="Animalia" lsidName="E. ahearni" order="Amphinomida" pageId="0" pageNumber="33" phylum="Annelida" rank="species" species="ahearni">
|
||
<emphasis italics="true" pageId="0" pageNumber="33">E. ahearni</emphasis>
|
||
</taxonomicName>
|
||
sp. nov.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="33" type="distribution">
|
||
<paragraph pageId="0" pageNumber="33">Distribution.</paragraph>
|
||
<paragraph pageId="0" pageNumber="33">
|
||
Central Pacific Ocean, Eastern CCZ, the exploration areas UK-1 and NORI-D (Fig.
|
||
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Map of CCZ of exploration areas and areas of particular interest, with targeted areas where samples of this study were collected highlighted in colours (see legend for explanation)." figureDoi="10.3897/zookeys.1137.86150.figure1" httpUri="https://binary.pensoft.net/fig/786201" pageId="0" pageNumber="33">1</figureCitation>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="33" type="etymology">
|
||
<paragraph pageId="0" pageNumber="33">Etymology.</paragraph>
|
||
<paragraph pageId="0" pageNumber="33">This species is named for Preben Hall, the captain onboard the ship Maersk Launcher that was used in NORI-D expeditions in 2020 and 2021.</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</subSection>
|
||
</document> |