425 lines
73 KiB
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425 lines
73 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1067.72596" ID-GBIF-Dataset="7cfa0a48-627b-4e1a-91ff-7b3c985f786b" ID-PMC="PMC8571246" ID-Pensoft-Pub="1313-2970-1067-83" ID-Pensoft-UUID="CAA42DFDE37C5CA1B87E1B839A64F767" ID-PubMed="34759720" ID-ZooBank="EA5DA7C436884FAC8D83BA7D20F4F84A" ModsDocID="1313-2970-1067-83" checkinTime="1635566812762" checkinUser="pensoft" docAuthor="Zhang, Jinghuai & Hutchings, Pat" docDate="2021" docId="98636BC938185F9B9B27FF8AF9C29D6B" docLanguage="en" docName="ZooKeys 1067: 83-92" docOrigin="ZooKeys 1067" docPubDate="2021-10-29" docSource="http://dx.doi.org/10.3897/zookeys.1067.72596" docTitle="Petta brevis Zhang & Hutchings 2021, sp. nov." docType="treatment" docUuid="BFEB135F-5072-4841-B65B-0F31C5F512D7" docUuidSource="ZooBank" docVersion="4" id="CAA42DFDE37C5CA1B87E1B839A64F767" lastPageNumber="83" masterDocId="CAA42DFDE37C5CA1B87E1B839A64F767" masterDocTitle="A new species of Petta (Annelida, Pectinariidae), with comments on Petta assimilis McIntosh, 1885" masterLastPageNumber="92" masterPageNumber="83" pageNumber="83" updateTime="1668151048080" updateUser="ExternalLinkService">
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<mods:titleInfo>
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<mods:title>A new species of Petta (Annelida, Pectinariidae), with comments on Petta assimilis McIntosh, 1885</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:namePart>Zhang, Jinghuai</mods:namePart>
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<mods:affiliation>South China Sea Environmental Monitoring Center, State Oceanic Administration, 155 Xingangxi Road, Guangzhou, China & Key Laboratory of Marine Environmental Survey Technology and Application, Ministry of Natural Resources, 353 Xingangxi Road, Guangzhou, China</mods:affiliation>
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<mods:name type="personal">
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<mods:roleTerm>Author</mods:roleTerm>
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<mods:namePart>Hutchings, Pat</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-7521-3930</mods:nameIdentifier>
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<mods:affiliation>Australian Museum Research Institute, Australian Museum, 1, William Street, 2010, New South Wales, Australia & Department of Biological Sciences, Macquarie University, North Ryde, 2019, Australia</mods:affiliation>
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<mods:nameIdentifier type="email">pat.hutchings@austmus.gov.au</mods:nameIdentifier>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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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>2021</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2021-10-29</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>1067</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>83</mods:start>
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<mods:end>92</mods:end>
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<mods:url>http://dx.doi.org/10.3897/zookeys.1067.72596</mods:url>
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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.1067.72596</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1313-2970-1067-83</mods:identifier>
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<mods:identifier type="ZooBank">EA5DA7C436884FAC8D83BA7D20F4F84A</mods:identifier>
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<mods:identifier type="Pensoft-UUID">CAA42DFDE37C5CA1B87E1B839A64F767</mods:identifier>
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<treatment ID-GBIF-Taxon="189635833" LSID="urn:lsid:zoobank.org:act:BFEB135F-5072-4841-B65B-0F31C5F512D7" httpUri="http://treatment.plazi.org/id/98636BC938185F9B9B27FF8AF9C29D6B" lastPageNumber="83" pageId="0" pageNumber="83">
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<subSubSection pageId="0" pageNumber="83" type="nomenclature">
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<paragraph pageId="0" pageNumber="83">
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<taxonomicName LSID="http://zoobank.org/BFEB135F-5072-4841-B65B-0F31C5F512D7" authority="Zhang & Hutchings, 2021" authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta brevis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="brevis" status="sp. nov.">Petta brevis</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="83">sp. nov.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="83" type="description">
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<paragraph pageId="0" pageNumber="83">
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<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Type localities of Petta brevis sp. nov. and Petta assimilis McIntosh, 1885." figureDoi="10.3897/zookeys.1067.72596.figure1" httpUri="https://binary.pensoft.net/fig/604621" pageId="0" pageNumber="83">Figs 1</figureCitation>
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">, 2</figureCitation>
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">, 3</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="83" type="reference_group">
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<paragraph pageId="0" pageNumber="83">
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<taxonomicName authority="Zhang & Hutchings, 2021" authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta assimilis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="assimilis" status="sp. nov.">Petta assimilis</taxonomicName>
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-
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<bibRefCitation author="Branch, ML" journalOrPublisher="South African Journal of Antarctic Research" pageId="0" pageNumber="83" pagination="3 - 52" refId="B1" refString="Branch, ML, 1994. The Polychaeta of subantarctic Marion and Prince Edward Islands: Illustrated keys to the species and results of the 1081-1989 University of Cape Town surveys. South African Journal of Antarctic Research 24: 3 - 52" title="The Polychaeta of subantarctic Marion and Prince Edward Islands: Illustrated keys to the species and results of the 1081 - 1989 University of Cape Town surveys." volume="24" year="1994">Branch 1994</bibRefCitation>
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: 15 (Prince Edward Island). -
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<bibRefCitation DOI="https://doi.org/10.11646/zootaxa.4614.2.3" author="Zhang, J" journalOrPublisher="Zootaxa" pageId="0" pageNumber="83" pagination="303 - 330" refId="B9" refString="Zhang, J, Hutchings, P, Kupriyanova, E, 2019. A revision of the genus Petta (Polychaeta Pectinariidae), with two new species from the abyss of south-eastern Australia, and comments on the phylogeny of the family. Zootaxa 4614 (2): 303 - 330, DOI: https://doi.org/10.11646/zootaxa.4614.2.3" title="A revision of the genus Petta (Polychaeta Pectinariidae), with two new species from the abyss of south-eastern Australia, and comments on the phylogeny of the family." url="https://doi.org/10.11646/zootaxa.4614.2.3" volume="4614" year="2019">Zhang et al. 2019</bibRefCitation>
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: 311-312. Not
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<taxonomicName authority="Zhang & Hutchings, 2021" authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" higherTaxonomySource="treatment-meta" kingdom="Animalia" lsidName="P. assimilis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="assimilis" status="sp. nov.">P. assimilis</taxonomicName>
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McIntosh, 1885
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="83" type="type material">
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<paragraph pageId="0" pageNumber="83">Type material.</paragraph>
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<paragraph pageId="0" pageNumber="83">
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<emphasis bold="true" italics="true" pageId="0" pageNumber="83">Holotype</emphasis>
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: SAM A021260, from Station No MAD 39 FFF;
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<geoCoordinate degrees="46" direction="south" minutes="59" orientation="latitude" precision="15" seconds="45" value="-46.995834">46°59'45"S</geoCoordinate>
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,
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<geoCoordinate degrees="38" direction="east" minutes="00" orientation="longitude" precision="15" seconds="39" value="38.010834">38°00'39"E</geoCoordinate>
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, depth 360-376 m, Marion and Prince Edward Island, South Africa, collected by bottom dredge, University Marion Island Survey, coll. 26 August 1987 by M. Branch.
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</paragraph>
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<paragraph pageId="0" pageNumber="83">
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<emphasis bold="true" italics="true" pageId="0" pageNumber="83">Paratypes</emphasis>
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: SAMC A094445, 1 specimen complete, prepared for SEM, and 3 incomplete specimens, with parts of body wall dissected and empty tubes. All paratypes collected from same location as holotype. All material fixed in formalin and then transferred to 70% alcohol.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="83" type="etymology">
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<paragraph pageId="0" pageNumber="83">Etymology.</paragraph>
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<paragraph pageId="0" pageNumber="83">
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The specific epithet
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<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta brevis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="brevis">
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<emphasis italics="true" pageId="0" pageNumber="83">Petta brevis</emphasis>
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</taxonomicName>
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is Latin for
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<normalizedToken originalValue="“shallow”">"shallow"</normalizedToken>
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, which refers to the type locality of new species, collected in relatively shallow waters compared to
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<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta assimilis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="assimilis">
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<emphasis italics="true" pageId="0" pageNumber="83">Petta assimilis</emphasis>
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</taxonomicName>
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, which is known from a nearby area but in much deeper water.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="83" type="description">
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<paragraph pageId="0" pageNumber="83">Description.</paragraph>
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<paragraph pageId="0" pageNumber="83">
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Holotype pale in colour except for golden paleae and sand grains visible through the body wall. Body cylindrical, tapering before scaphe (Figs
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2A, B</figureCitation>
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,
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3A</figureCitation>
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). Length 15 mm (20) including paleae and scaphe, maximum width 3 mm (3).
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</paragraph>
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<caption doi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83" start="Figure 2" startId="F2">
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<paragraph pageId="0" pageNumber="83">
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<emphasis bold="true" pageId="0" pageNumber="83">Figure 2.</emphasis>
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<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta brevis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="brevis">
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<emphasis italics="true" pageId="0" pageNumber="83">Petta brevis</emphasis>
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</taxonomicName>
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sp. nov., holotype (SAM-A021260)
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<emphasis bold="true" pageId="0" pageNumber="83">A</emphasis>
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dorsal view of whole body
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<emphasis bold="true" pageId="0" pageNumber="83">B</emphasis>
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ventral view of whole body
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<emphasis bold="true" pageId="0" pageNumber="83">C</emphasis>
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ventral view of anterior end
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<emphasis bold="true" pageId="0" pageNumber="83">D</emphasis>
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dorsal view of anterior end
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<emphasis bold="true" pageId="0" pageNumber="83">E</emphasis>
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close up of left branchiae
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<emphasis bold="true" pageId="0" pageNumber="83">F</emphasis>
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dorso-lateral view of posterior end
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<emphasis bold="true" pageId="0" pageNumber="83">G</emphasis>
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ventral view of posterior end
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<emphasis bold="true" pageId="0" pageNumber="83">H</emphasis>
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close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet.
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</paragraph>
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</caption>
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<paragraph pageId="0" pageNumber="83">
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Cephalic veil semi-circular, free from operculum, with smooth lateral margins, distal (anterior) end thin, folded over with smooth margins (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2A-C</figureCitation>
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). Pair of lateral ear-shaped lobes adjacent to dorsal side of cephalic veil (Fig.
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2C</figureCitation>
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). Buccal tentacles numerous, thick, with deep longitudinal grooves arising around buccal cavity (Figs
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2B, C</figureCitation>
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,
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3C</figureCitation>
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).
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</paragraph>
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<paragraph pageId="0" pageNumber="83">
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Operculum semi-circular, surface tessellated and slightly inflated, with lateral and dorsal margins slightly elevated but smooth (Figs
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2A, D</figureCitation>
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,
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3C</figureCitation>
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). Two rows of 13 pairs of golden coloured paleae, some broken but arranged in a fan shape, differing slightly in length, outer ones shorter and thinner than inner ones on each row, slightly curved dorsally, with blunt tips (Figs
|
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<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2C, D</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3C</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<caption doi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83" start="Figure 3" startId="F3">
|
||
<paragraph pageId="0" pageNumber="83">
|
||
<emphasis bold="true" pageId="0" pageNumber="83">Figure 3.</emphasis>
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta brevis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="brevis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta brevis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov., SEM of paratype (SAMC-A094445)
|
||
<emphasis bold="true" pageId="0" pageNumber="83">A</emphasis>
|
||
ventral view of whole body
|
||
<emphasis bold="true" pageId="0" pageNumber="83">B</emphasis>
|
||
ventral view of anterior end
|
||
<emphasis bold="true" pageId="0" pageNumber="83">C</emphasis>
|
||
dorsal view of anterior end
|
||
<emphasis bold="true" pageId="0" pageNumber="83">D</emphasis>
|
||
ventral view of posterior end with distorted scaphe
|
||
<emphasis bold="true" pageId="0" pageNumber="83">E</emphasis>
|
||
notochaetae
|
||
<emphasis bold="true" pageId="0" pageNumber="83">F</emphasis>
|
||
close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet.
|
||
</paragraph>
|
||
</caption>
|
||
<paragraph pageId="0" pageNumber="83">
|
||
First pair of tentacular cirri extending to about halfway along the outer paleae, slightly annulated with swollen base tapering to long thin tip arising from base of opercular margin and paleal ridge (Figs
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2A-D</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3B, C</figureCitation>
|
||
). Pair of blunt-tipped triangular ventral lappets present just laterally to first pair of tentacular cirri (Figs
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2C</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3A, B</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">
|
||
Second pair of tentacular cirri similar in length to first pair but thinner and with base less swollen than that of first pair (Figs
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2A-D</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3B, C</figureCitation>
|
||
), inserted slightly dorsally on mid lateral connecting ridge of segment 2. Segment 2 with pair of broad ventro-lateral lobes separated by a broad and deep mid-ventral groove; each lobe with six pairs of triangular lappets, two mid ventral ones largest (Figs
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2B, C</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3B, C</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">
|
||
Segments 3 and 4 with two pairs of similar-sized branchiae, those of segment 3 slightly displaced ventrally (Figs
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2A, D</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3C</figureCitation>
|
||
). Each branchia with large basal hump and with about six loose, flat lamellae (Fig.
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2D, E</figureCitation>
|
||
). Segment 3 with raised ventral ridge with pair of broad ventro-lateral lobes and pair of rectangular mid-ventral lobes, mid-ventral lobes with rounded margins (Figs
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2C</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3B</figureCitation>
|
||
). Segment 4 with slightly raised ventral margins with slight mid ventral indentation, but ventral margins less glandular than those of segment 3 (Figs
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2B, C</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3A, B</figureCitation>
|
||
). Pair of dorso-lateral pads small and smooth, arising from dorsal side of notopodia on segment 5 (Figs
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2D</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3C</figureCitation>
|
||
), but distorted on segment 5 of holotype.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">
|
||
Discrete raised ventral glandular lobes (pads) on segments 2-7, decreasing in size and elevation posteriorly with slight mid-ventral indentation (Figs
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2C</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3B</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">
|
||
Notopodia of segment 1 with paleae, and notochaetae from segments 5-21 (17 pairs). Notopodia of segments 5-7 smaller and with smaller notochaetae (Figs
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2D</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3C</figureCitation>
|
||
); notopodia of segments 8-13 relatively large with long chaetae; following notopodia decreasing posteriorly in size, length of notochaetae similarly decreasing. Notopodia with 2 rows of different capillary notochaetae; one with distal serrated wings, anterior surface covered with numerous minute spines from below wing to about mid-basal portion of chaeta; another tapering to acute tip without wings, anterior surface covered with numerous spines from mid-length to tip (Fig.
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3E</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">
|
||
Neuropodia developed from segment 8 (Figs
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2B, C</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3A, B</figureCitation>
|
||
), continuing to scaphal plate, with slightly raised tori. Neurochaetae (uncini) arranged in single transverse row on each torus. Uncinus with two main teeth, followed by several rows of numerous small teeth (Fig.
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3F</figureCitation>
|
||
) and a large peg with blunt tip embedded into torus. Neuropodia of segment 21 with enlarged posterior lobe (Fig.
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3A</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">
|
||
Scaphe long, ovoid, flattened dorsally, inconspicuous constriction on posterior segments. Lateral margins rolled dorsally, with six pairs of lobes; first pair largest, connected to dorsal margin of scaphe; posterior lobes narrow, triangular, almost of equal size; dorsal margin of scaphe smooth (Figs
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2F, G</figureCitation>
|
||
,
|
||
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Petta brevis sp. nov., SEM of paratype (SAMC-A 094445) A ventral view of whole body B ventral view of anterior end C dorsal view of anterior end D ventral view of posterior end with distorted scaphe E notochaetae F close up of uncini. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; mat, major teeth; nec, neurochaetae; nep, neuropodium; noc, notochaetae; nop, notopodium; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure3" httpUri="https://binary.pensoft.net/fig/604623" pageId="0" pageNumber="83">3D</figureCitation>
|
||
). Anal flap triangular, without an anal cirrus. Scaphal hooks amber-coloured, left 9 and right 10 on holotype, arising from both sides of dorsal margin of scaphe, with blunt tips slightly curved dorsally (Fig.
|
||
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Petta brevis sp. nov., holotype (SAM-A 021260) A dorsal view of whole body B ventral view of whole body C ventral view of anterior end D dorsal view of anterior end E close up of left branchiae F dorso-lateral view of posterior end G ventral view of posterior end H close up of scaphal hooks. Abbreviations: af, anal flap (plate); an, anus; br, branchiae; bt, buccal tentacles; cv, cephalic veil; dlp, dorso-lateral pad; dms, dorsal margin of scaphe; lel, lateral ear-shaped lobe; nec, neurochaetae; nep, neuropodium; noc, notochaetae; op, operculum; or, opercular rim; p, paleae; s, segment; sc, scaphe; sh, scaphal hooks; tc, tentacular cirri; vl, ventral lappet." figureDoi="10.3897/zookeys.1067.72596.figure2" httpUri="https://binary.pensoft.net/fig/604622" pageId="0" pageNumber="83">2H</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">Type of tube: with thin chitinous inner lining covered in small stones cemented together.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="83" type="variation">
|
||
<paragraph pageId="0" pageNumber="83">Variation.</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">The paratypes consist of one complete specimen, prepared for SEM, and three anterior fragments with some parts of their body wall dissected and some empty incomplete tubes.</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="83" type="remarks">
|
||
<paragraph pageId="0" pageNumber="83">Remarks.</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta brevis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="brevis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta brevis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. is characterised by a cephalic veil with smooth margins, 13 pairs of paleae, 2 pairs of similar length tentacular cirri, segment 2 with pair of broad ventro-lateral lobes, each lobe with six pairs of triangular lappets, segment 3 with pair of ventro-lateral lobes, and rectangular mid ventral lobes, elongate scaphe not well separated from posterior body, lateral margin with six pairs of lobes, 9-10 pairs of blunt tipped scaphal hooks and smooth anal flap.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta brevis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="brevis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta brevis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. differs from
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. pusilla" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="pusilla">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. pusilla</emphasis>
|
||
</taxonomicName>
|
||
Malmgren, 1866, which has the anterior margin of the cephalic veil with several lappets, in having a smooth margin to the cephalic veil, like all other species of
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta</emphasis>
|
||
</taxonomicName>
|
||
. The arrangement of lobes on segment 3 in
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta brevis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="brevis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta brevis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. differentiates it from
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. assimilis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="assimilis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. assimilis</emphasis>
|
||
</taxonomicName>
|
||
McIntosh, 1885 and
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. investigatoris" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="investigatoris">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. investigatoris</emphasis>
|
||
</taxonomicName>
|
||
Zhang, Hutchings & Kupriyanova, 2019, as these two species have lappets on the ventral lateral lobes of segment 3. The number of pairs of scaphal hooks also differs between species as well as the presence or absence of an anal cirrus:
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. pusilla" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="pusilla">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. pusilla</emphasis>
|
||
</taxonomicName>
|
||
has 8 pairs of scaphal hooks and anal cirrus present;
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. pellucida" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="pellucida">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. pellucida</emphasis>
|
||
</taxonomicName>
|
||
has 7 pairs of scaphal hooks and the presence/absence of anal cirrus was not stated;
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. tenuis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="tenuis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. tenuis</emphasis>
|
||
</taxonomicName>
|
||
has 8 pairs of scaphal hooks and a long anal cirrus;
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. investigatoris" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="investigatoris">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. investigatoris</emphasis>
|
||
</taxonomicName>
|
||
Zhang, Hutchings & Kupriyanova, 2019 and
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. williamsonae" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="williamsonae">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. williamsonae</emphasis>
|
||
</taxonomicName>
|
||
Zhang, Hutchings & Kupriyanova, 2019 both have 9 pairs of scaphal hooks and long anal cirrus. For
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. assimilis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="assimilis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. assimilis</emphasis>
|
||
</taxonomicName>
|
||
, no data on the number of pairs of hooks or whether an anal cirrus are present or not, was given, whereas
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. brevis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="brevis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. brevis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. has 9 scaphal hooks on one side and 10 on the other and lacks an anal cirrus.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection pageId="0" pageNumber="83" type="discussion">
|
||
<paragraph pageId="0" pageNumber="83">Discussion.</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">
|
||
McIntosh described
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. assimilis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="assimilis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. assimilis</emphasis>
|
||
</taxonomicName>
|
||
from Station 147 (between Prince Edward and Kerguelen Islands),
|
||
<geoCoordinate degrees="46" direction="south" minutes="16" orientation="latitude" precision="925" value="-46.266666">46°16'S</geoCoordinate>
|
||
,
|
||
<geoCoordinate degrees="48" direction="east" minutes="27" orientation="longitude" precision="925" value="48.45">48°27'E</geoCoordinate>
|
||
, at a depth of 1600 fathoms (= 2926 m), and recorded the sediment as being diatom ooze. His description was focussed on how similar the new species was to the British representative of the genus, which he did not actually name, and he also compared the new species with
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. pusilla" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="pusilla">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. pusilla</emphasis>
|
||
</taxonomicName>
|
||
Malmgren, 1866, which was described from the west coast of Sweden (
|
||
<bibRefCitation DOI="https://doi.org/10.11646/zootaxa.4614.2.3" author="Zhang, J" journalOrPublisher="Zootaxa" pageId="0" pageNumber="83" pagination="303 - 330" refId="B9" refString="Zhang, J, Hutchings, P, Kupriyanova, E, 2019. A revision of the genus Petta (Polychaeta Pectinariidae), with two new species from the abyss of south-eastern Australia, and comments on the phylogeny of the family. Zootaxa 4614 (2): 303 - 330, DOI: https://doi.org/10.11646/zootaxa.4614.2.3" title="A revision of the genus Petta (Polychaeta Pectinariidae), with two new species from the abyss of south-eastern Australia, and comments on the phylogeny of the family." url="https://doi.org/10.11646/zootaxa.4614.2.3" volume="4614" year="2019">Zhang et al. 2019</bibRefCitation>
|
||
). As no other species had been described from Europe when McIntosh described his species, one must assume that he was referring to an undescribed English species. McIntosh illustrated the ventral view and the scaphal plate (
|
||
<bibRefCitation author="McIntosh, WC" journalOrPublisher="Series Zoology" pageId="0" pageNumber="83" pagination="1 - 554" publicationUrl="https://biodiversitylibrary.org/page/50688426" refId="B6" refString="McIntosh, WC, 1885. Report on the Annelida Polychaeta collected by H.M.S. Challenger during the years 1873-1876. Series Zoology 12 (34): 1 - 554, https://biodiversitylibrary.org/page/50688426" title="Report on the Annelida Polychaeta collected by H. M. S. Challenger during the years 1873 - 1876." url="https://biodiversitylibrary.org/page/50688426" volume="12" year="1885">McIntosh 1885</bibRefCitation>
|
||
, plate XLVII, figs 8, 9) and the chaetae (plate XXVIA, figs 16-19) in a schematic way but gave no information as to the number of pairs of scaphal hooks present.
|
||
<bibRefCitation author="Branch, ML" journalOrPublisher="South African Journal of Antarctic Research" pageId="0" pageNumber="83" pagination="3 - 52" refId="B1" refString="Branch, ML, 1994. The Polychaeta of subantarctic Marion and Prince Edward Islands: Illustrated keys to the species and results of the 1081-1989 University of Cape Town surveys. South African Journal of Antarctic Research 24: 3 - 52" title="The Polychaeta of subantarctic Marion and Prince Edward Islands: Illustrated keys to the species and results of the 1081 - 1989 University of Cape Town surveys." volume="24" year="1994">Branch (1994)</bibRefCitation>
|
||
also collected a species of
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta</emphasis>
|
||
</taxonomicName>
|
||
from a similar area but in much shallower water and identified it as
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. assimilis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="assimilis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. assimilis</emphasis>
|
||
</taxonomicName>
|
||
. As noted above, we found differences between the material collected by Branch, and therefore described it as a new species. Also, the review of the genus by
|
||
<bibRefCitation DOI="https://doi.org/10.11646/zootaxa.4614.2.3" author="Zhang, J" journalOrPublisher="Zootaxa" pageId="0" pageNumber="83" pagination="303 - 330" refId="B9" refString="Zhang, J, Hutchings, P, Kupriyanova, E, 2019. A revision of the genus Petta (Polychaeta Pectinariidae), with two new species from the abyss of south-eastern Australia, and comments on the phylogeny of the family. Zootaxa 4614 (2): 303 - 330, DOI: https://doi.org/10.11646/zootaxa.4614.2.3" title="A revision of the genus Petta (Polychaeta Pectinariidae), with two new species from the abyss of south-eastern Australia, and comments on the phylogeny of the family." url="https://doi.org/10.11646/zootaxa.4614.2.3" volume="4614" year="2019">Zhang et al. (2019)</bibRefCitation>
|
||
found that all species of
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta</emphasis>
|
||
</taxonomicName>
|
||
have very restricted depth ranges, which also supports our conclusion that
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta brevis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="brevis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta brevis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov., although collected from a similar location as
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. assimilis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="assimilis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. assimilis</emphasis>
|
||
</taxonomicName>
|
||
but at a much shallower depth, should be described as new.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">
|
||
<bibRefCitation author="Hartman, O" journalOrPublisher="Allan Hancock Monographs in Marine Biology" pageId="0" pageNumber="83" pagination="1 - 387" refId="B2" refString="Hartman, O, 1967. Polychaetous annelids collected by the USNS Eltanin and Staten Island cruises, chiefly from Antarctic Seas. Allan Hancock Monographs in Marine Biology 2: 1 - 387" title="Polychaetous annelids collected by the USNS Eltanin and Staten Island cruises, chiefly from Antarctic Seas." volume="2" year="1967">Hartman (1967)</bibRefCitation>
|
||
also recorded
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta assimilis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="assimilis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta assimilis</emphasis>
|
||
</taxonomicName>
|
||
from off Cape Horn (1806-2013 m) and the Falkland Islands, 2452 m, South America. Comparing her description with that of
|
||
<bibRefCitation author="McIntosh, WC" journalOrPublisher="Series Zoology" pageId="0" pageNumber="83" pagination="1 - 554" publicationUrl="https://biodiversitylibrary.org/page/50688426" refId="B6" refString="McIntosh, WC, 1885. Report on the Annelida Polychaeta collected by H.M.S. Challenger during the years 1873-1876. Series Zoology 12 (34): 1 - 554, https://biodiversitylibrary.org/page/50688426" title="Report on the Annelida Polychaeta collected by H. M. S. Challenger during the years 1873 - 1876." url="https://biodiversitylibrary.org/page/50688426" volume="12" year="1885">McIntosh (1885)</bibRefCitation>
|
||
, it is difficult to decide if
|
||
<normalizedToken originalValue="Hartman’s">Hartman's</normalizedToken>
|
||
species is the same or yet another undescribed species of
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta</emphasis>
|
||
</taxonomicName>
|
||
. Certainly, the species recorded by Hartman differs from
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta brevis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="brevis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta brevis</emphasis>
|
||
</taxonomicName>
|
||
sp. nov. in terms of number of pairs of paleae and the structure of the branchiae. Although she stated that three pairs are present, the first is actually the second tentacular cirrus, and the scaphe has six pairs of triangular lobes, anal cirrus present, and 11 pairs of caudal spines that are distally slightly falcate. She mentioned that the anterior margins of segments 2 and 3 have 7 pairs of fimbriae, which on the figure (
|
||
<bibRefCitation author="Hartman, O" journalOrPublisher="Allan Hancock Monographs in Marine Biology" pageId="0" pageNumber="83" pagination="1 - 387" refId="B2" refString="Hartman, O, 1967. Polychaetous annelids collected by the USNS Eltanin and Staten Island cruises, chiefly from Antarctic Seas. Allan Hancock Monographs in Marine Biology 2: 1 - 387" title="Polychaetous annelids collected by the USNS Eltanin and Staten Island cruises, chiefly from Antarctic Seas." volume="2" year="1967">Hartman 1967</bibRefCitation>
|
||
, fig. 44A) equate to the ventro-lateral lobes. We suggest that the identity of
|
||
<normalizedToken originalValue="Hartman’s">Hartman's</normalizedToken>
|
||
material cannot be determined at this stage. We also regard that
|
||
<taxonomicName authorityName="Zhang & Hutchings" authorityYear="2021" class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta assimilis" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="assimilis">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta assimilis</emphasis>
|
||
</taxonomicName>
|
||
is an indeterminate species until material from much closer to the type locality becomes available and can be examined.
|
||
</paragraph>
|
||
<paragraph pageId="0" pageNumber="83">
|
||
This study supports the findings of
|
||
<bibRefCitation DOI="https://doi.org/10.11646/zootaxa.4614.2.3" author="Zhang, J" journalOrPublisher="Zootaxa" pageId="0" pageNumber="83" pagination="303 - 330" refId="B9" refString="Zhang, J, Hutchings, P, Kupriyanova, E, 2019. A revision of the genus Petta (Polychaeta Pectinariidae), with two new species from the abyss of south-eastern Australia, and comments on the phylogeny of the family. Zootaxa 4614 (2): 303 - 330, DOI: https://doi.org/10.11646/zootaxa.4614.2.3" title="A revision of the genus Petta (Polychaeta Pectinariidae), with two new species from the abyss of south-eastern Australia, and comments on the phylogeny of the family." url="https://doi.org/10.11646/zootaxa.4614.2.3" volume="4614" year="2019">Zhang et al. (2019)</bibRefCitation>
|
||
that species of
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" genus="Petta" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Petta" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="genus">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">Petta</emphasis>
|
||
</taxonomicName>
|
||
are not common and are mainly reported from the deep sea, with some species only known from type material. It must be noted that deep sea habitats are relatively poorly sampled around the world; however, because tubes of pectinariids are very conspicuous, one would expect them to be recorded if present, which reinforces our belief that this family is not well represented in the deep sea. The only exception is
|
||
<taxonomicName class="Polychaeta" family="Pectinariidae" kingdom="Animalia" lsidName="P. pusilla" order="Terebellida" pageId="0" pageNumber="83" phylum="Annelida" rank="species" species="pusilla">
|
||
<emphasis italics="true" pageId="0" pageNumber="83">P. pusilla</emphasis>
|
||
</taxonomicName>
|
||
<bibRefCitation author="Malmgren, AJ" journalOrPublisher="Oefversigt af Koeniglich Vetenskapsakademiens foerhandlingar, Stockholm" pageId="0" pageNumber="83" pagination="51 - 110" publicationUrl="http://www.biodiversitylibrary.org/item/100715page/61/mode/1up" refId="B5" refString="Malmgren, AJ, 1866. Nordiska Hafs-Annulater. Oefversigt af Koeniglich Vetenskapsakademiens foerhandlingar, Stockholm 22 (1): 51 - 110, http://www.biodiversitylibrary.org/item/100715page/61/mode/1up" title="Nordiska Hafs-Annulater." url="http://www.biodiversitylibrary.org/item/100715page/61/mode/1up" volume="22" year="1866">Malmgren 1866</bibRefCitation>
|
||
, which has been recorded from many locations at depths of 15-200 m (see
|
||
<bibRefCitation DOI="https://doi.org/10.11646/zootaxa.4614.2.3" author="Zhang, J" journalOrPublisher="Zootaxa" pageId="0" pageNumber="83" pagination="303 - 330" refId="B9" refString="Zhang, J, Hutchings, P, Kupriyanova, E, 2019. A revision of the genus Petta (Polychaeta Pectinariidae), with two new species from the abyss of south-eastern Australia, and comments on the phylogeny of the family. Zootaxa 4614 (2): 303 - 330, DOI: https://doi.org/10.11646/zootaxa.4614.2.3" title="A revision of the genus Petta (Polychaeta Pectinariidae), with two new species from the abyss of south-eastern Australia, and comments on the phylogeny of the family." url="https://doi.org/10.11646/zootaxa.4614.2.3" volume="4614" year="2019">Zhang et al. 2019</bibRefCitation>
|
||
for a complete list); however, we suggest that these records should be checked, as its geographical range is very large with varying ecological conditions. Also, the holotype, which was examined by
|
||
<bibRefCitation DOI="https://doi.org/10.11646/zootaxa.4614.2.3" author="Zhang, J" journalOrPublisher="Zootaxa" pageId="0" pageNumber="83" pagination="303 - 330" refId="B9" refString="Zhang, J, Hutchings, P, Kupriyanova, E, 2019. A revision of the genus Petta (Polychaeta Pectinariidae), with two new species from the abyss of south-eastern Australia, and comments on the phylogeny of the family. Zootaxa 4614 (2): 303 - 330, DOI: https://doi.org/10.11646/zootaxa.4614.2.3" title="A revision of the genus Petta (Polychaeta Pectinariidae), with two new species from the abyss of south-eastern Australia, and comments on the phylogeny of the family." url="https://doi.org/10.11646/zootaxa.4614.2.3" volume="4614" year="2019">Zhang et al. (2019)</bibRefCitation>
|
||
, differs from that given by Malmgren, which may have contributed to these widespread records.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |