230 lines
23 KiB
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230 lines
23 KiB
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<document ID-DOI="http://dx.doi.org/10.3897/zse.99.97944" ID-Pensoft-Pub="1860-0743-1-149" ID-Pensoft-UUID="2CEFB5445B595BCF9C89229F6A349C76" ID-ZooBank="D39CCABAE7E04D64BCC854371D9BE612" ModsDocID="1860-0743-99-1-149" checkinTime="1677176365165" checkinUser="pensoft" docAuthor="Jimi, Naoto, Fujita, Toshihiko & Woo, Sau Pinn" docDate="2023" docId="77BCB273047C535286723F9C33771765" docLanguage="en" docName="ZoosystEvol 99(1): 149-159" docOrigin="Zoosystematics and Evolution 99 (1)" docPubDate="2023-02-23" docSource="http://dx.doi.org/10.3897/zse.99.97944" docTitle="Daylithos amamiensis Jimi & Fujita & Woo 2023, sp. nov." docType="treatment" docUuid="7E826790-040F-44BD-8F7D-45ED8352D7F5" docUuidSource="ZooBank" docVersion="1" id="2CEFB5445B595BCF9C89229F6A349C76" lastPageNumber="149" masterDocId="2CEFB5445B595BCF9C89229F6A349C76" masterDocTitle="Four new species of coral- and rock-boring polychaetes Daylithos (Annelida, Flabelligeridae) from the Pacific Ocean" masterLastPageNumber="159" masterPageNumber="149" pageNumber="149" updateTime="1677176365165" updateUser="pensoft">
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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>Four new species of coral- and rock-boring polychaetes Daylithos (Annelida, Flabelligeridae) from the Pacific Ocean</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>Jimi, Naoto</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0001-8586-3320</mods:nameIdentifier>
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<mods:affiliation>Sugashima Marine Biological Laboratory, Graduate School of Science, Nagoya University, 429 - 63 Sugashima, Toba 517 - 0004, Mie, Japan & Centre for Marine & Coastal Studies, Universiti Sains Malaysia, USM, Penang 11800, Malaysia</mods:affiliation>
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<mods:nameIdentifier type="email">beniimo7010@gmail.com</mods:nameIdentifier>
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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>Fujita, Toshihiko</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-0334-1794</mods:nameIdentifier>
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<mods:affiliation>National Museum of Nature and Science, 4 - 1 - 1 Amakubo, Tsukuba 305 - 0005, Ibaraki, Japan</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>Woo, Sau Pinn</mods:namePart>
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<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-7016-6466</mods:nameIdentifier>
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<mods:affiliation>Centre for Marine & Coastal Studies, Universiti Sains Malaysia, USM, Penang 11800, Malaysia</mods:affiliation>
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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>Zoosystematics and Evolution</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2023</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2023-02-23</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>99</mods:number>
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</mods:detail>
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<mods:detail type="issue">
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<mods:number>1</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>149</mods:start>
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<mods:end>159</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/zse.99.97944</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/zse.99.97944</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1860-0743-1-149</mods:identifier>
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<mods:identifier type="ZooBank">D39CCABAE7E04D64BCC854371D9BE612</mods:identifier>
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<mods:identifier type="Pensoft-UUID">2CEFB5445B595BCF9C89229F6A349C76</mods:identifier>
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</mods:mods>
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<treatment LSID="urn:lsid:zoobank.org:act:7E826790-040F-44BD-8F7D-45ED8352D7F5" httpUri="http://treatment.plazi.org/id/77BCB273047C535286723F9C33771765" lastPageNumber="149" pageId="0" pageNumber="149">
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<subSubSection pageId="0" pageNumber="149" type="nomenclature">
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<paragraph pageId="0" pageNumber="149">
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<taxonomicName LSID="https://zoobank.org/7E826790-040F-44BD-8F7D-45ED8352D7F5" authority="Jimi & Fujita & Woo, 2023" authorityName="Jimi & Fujita & Woo" authorityYear="2023" class="Polychaeta" family="Flabelligeridae" genus="Daylithos" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Daylithos amamiensis" order="Terebellida" pageId="0" pageNumber="149" phylum="Annelida" rank="species" species="amamiensis" status="sp. nov.">Daylithos amamiensis</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="149">sp. nov.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="149" type="description">
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<paragraph pageId="0" pageNumber="149">
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Daylithos amamiensis sp. nov. Holotype (NSMT-Pol H- 907). A. Whole body, lateral view (insert: posterior end of paratype); B. Anterior end, lateral view; C Prostomium, frontal view; D. Prostomium, lateral view; E. Notochaetae, chaetiger 12; F. Basal part of notochaeta; G. Neurohook, chaetiger 12; H. Middle part of neurohook. Scale bars: 10 mm (A, B); 2.5 mm (A (insert )); 2 mm (C, D); 200 μm (E); 100 μm (F); 200 μm (G); 100 μm (H). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip." figureDoi="10.3897/zse.99.97944.figure3" httpUri="https://binary.pensoft.net/fig/814852" pageId="0" pageNumber="149">Fig. 3</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="149" type="type material">
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<paragraph pageId="0" pageNumber="149">Type material.</paragraph>
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<paragraph pageId="0" pageNumber="149">
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<emphasis bold="true" italics="true" pageId="0" pageNumber="149">Holotype</emphasis>
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(NSMT-Pol H-907): collected from Shirahama, Amami Oshima (
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<geoCoordinate degrees="28.1970" direction="north" orientation="latitude" precision="5" value="28.197">28.1970°N</geoCoordinate>
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,
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<geoCoordinate degrees="129.2699" direction="east" orientation="longitude" precision="5" value="129.2699">129.2699°E</geoCoordinate>
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), 5 m depth, SCUBA, Naoto Jimi, 15 Nov 2016.
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<emphasis bold="true" italics="true" pageId="0" pageNumber="149">Paratype</emphasis>
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(NSMT-Pol P-908): one specimen, middle chaetigers lost, collected from same locality as holotype, 15 Nov 2016.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="149" type="description">
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<paragraph pageId="0" pageNumber="149">Description</paragraph>
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<paragraph pageId="0" pageNumber="149">
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<emphasis bold="true" pageId="0" pageNumber="149">(based on holotype).</emphasis>
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Body 30 mm in total length (24 mm in paratype), 3 mm in width (3 mm in paratype), 47 chaetigers (posterior chaetigers lost) (67 chaetigers in paratype), greyish, cylindrical (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Daylithos amamiensis sp. nov. Holotype (NSMT-Pol H- 907). A. Whole body, lateral view (insert: posterior end of paratype); B. Anterior end, lateral view; C Prostomium, frontal view; D. Prostomium, lateral view; E. Notochaetae, chaetiger 12; F. Basal part of notochaeta; G. Neurohook, chaetiger 12; H. Middle part of neurohook. Scale bars: 10 mm (A, B); 2.5 mm (A (insert )); 2 mm (C, D); 200 μm (E); 100 μm (F); 200 μm (G); 100 μm (H). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip." figureDoi="10.3897/zse.99.97944.figure3" httpUri="https://binary.pensoft.net/fig/814852" pageId="0" pageNumber="149">3A</figureCitation>
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). Body tapering posteriorly into flat cauda (paratype) (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Daylithos amamiensis sp. nov. Holotype (NSMT-Pol H- 907). A. Whole body, lateral view (insert: posterior end of paratype); B. Anterior end, lateral view; C Prostomium, frontal view; D. Prostomium, lateral view; E. Notochaetae, chaetiger 12; F. Basal part of notochaeta; G. Neurohook, chaetiger 12; H. Middle part of neurohook. Scale bars: 10 mm (A, B); 2.5 mm (A (insert )); 2 mm (C, D); 200 μm (E); 100 μm (F); 200 μm (G); 100 μm (H). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip." figureDoi="10.3897/zse.99.97944.figure3" httpUri="https://binary.pensoft.net/fig/814852" pageId="0" pageNumber="149">3A</figureCitation>
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). Tunic thin, without sediment particles, blackish. Dorsal shield flat, without depression or projection (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Daylithos amamiensis sp. nov. Holotype (NSMT-Pol H- 907). A. Whole body, lateral view (insert: posterior end of paratype); B. Anterior end, lateral view; C Prostomium, frontal view; D. Prostomium, lateral view; E. Notochaetae, chaetiger 12; F. Basal part of notochaeta; G. Neurohook, chaetiger 12; H. Middle part of neurohook. Scale bars: 10 mm (A, B); 2.5 mm (A (insert )); 2 mm (C, D); 200 μm (E); 100 μm (F); 200 μm (G); 100 μm (H). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip." figureDoi="10.3897/zse.99.97944.figure3" httpUri="https://binary.pensoft.net/fig/814852" pageId="0" pageNumber="149">3B</figureCitation>
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). Body papillae minute, distally rounded, arranged in two rows per segment; anterior row papillae longer than posterior. Gonopodial lobes absent. Neuroparapodial base of chaetiger 5 slightly swollen.
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</paragraph>
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<caption doi="10.3897/zse.99.97944.figure3" httpUri="https://binary.pensoft.net/fig/814852" pageId="0" pageNumber="149" start="Figure 3" startId="F3">
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<paragraph pageId="0" pageNumber="149">
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<emphasis bold="true" pageId="0" pageNumber="149">Figure 3.</emphasis>
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<taxonomicName authorityName="Jimi & Fujita & Woo" authorityYear="2023" class="Polychaeta" family="Flabelligeridae" genus="Daylithos" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Daylithos amamiensis" order="Terebellida" pageId="0" pageNumber="149" phylum="Annelida" rank="species" species="amamiensis">
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<emphasis italics="true" pageId="0" pageNumber="149">Daylithos amamiensis</emphasis>
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</taxonomicName>
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sp. nov. Holotype (NSMT-Pol H-907).
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<emphasis bold="true" pageId="0" pageNumber="149">A.</emphasis>
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Whole body, lateral view (insert: posterior end of paratype);
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<emphasis bold="true" pageId="0" pageNumber="149">B.</emphasis>
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Anterior end, lateral view;
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<emphasis bold="true" pageId="0" pageNumber="149">C</emphasis>
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Prostomium, frontal view;
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<emphasis bold="true" pageId="0" pageNumber="149">D.</emphasis>
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Prostomium, lateral view;
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<emphasis bold="true" pageId="0" pageNumber="149">E.</emphasis>
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Notochaetae, chaetiger 12;
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<emphasis bold="true" pageId="0" pageNumber="149">F.</emphasis>
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Basal part of notochaeta;
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<emphasis bold="true" pageId="0" pageNumber="149">G.</emphasis>
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Neurohook, chaetiger 12;
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<emphasis bold="true" pageId="0" pageNumber="149">H.</emphasis>
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Middle part of neurohook. Scale bars: 10 mm (
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<emphasis bold="true" pageId="0" pageNumber="149">A, B</emphasis>
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); 2.5 mm (
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<emphasis bold="true" pageId="0" pageNumber="149">A</emphasis>
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(insert)); 2 mm (
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<emphasis bold="true" pageId="0" pageNumber="149">C, D</emphasis>
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); 200
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<normalizedToken originalValue="μm">μm</normalizedToken>
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(
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<emphasis bold="true" pageId="0" pageNumber="149">E</emphasis>
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); 100
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<normalizedToken originalValue="μm">μm</normalizedToken>
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(
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<emphasis bold="true" pageId="0" pageNumber="149">F</emphasis>
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); 200
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<normalizedToken originalValue="μm">μm</normalizedToken>
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(
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<emphasis bold="true" pageId="0" pageNumber="149">G</emphasis>
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); 100
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<normalizedToken originalValue="μm">μm</normalizedToken>
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(
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<emphasis bold="true" pageId="0" pageNumber="149">H</emphasis>
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). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip.
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</paragraph>
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</caption>
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<paragraph pageId="0" pageNumber="149">
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Prostomium oval. Eyes present, blackish. Caruncle slightly exceeding the branchial plate margin, with black pigments. Dorsal and lateral lips present (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Daylithos amamiensis sp. nov. Holotype (NSMT-Pol H- 907). A. Whole body, lateral view (insert: posterior end of paratype); B. Anterior end, lateral view; C Prostomium, frontal view; D. Prostomium, lateral view; E. Notochaetae, chaetiger 12; F. Basal part of notochaeta; G. Neurohook, chaetiger 12; H. Middle part of neurohook. Scale bars: 10 mm (A, B); 2.5 mm (A (insert )); 2 mm (C, D); 200 μm (E); 100 μm (F); 200 μm (G); 100 μm (H). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip." figureDoi="10.3897/zse.99.97944.figure3" httpUri="https://binary.pensoft.net/fig/814852" pageId="0" pageNumber="149">3C, D</figureCitation>
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); ventral lip smaller than dorsal and lateral lips. Palps thicker than branchiae. Branchiae in two lateral groups, each with 35 filaments. Longest branchiae in inner rows, about half as long as palps, decreasing in length towards the lateral margins (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Daylithos amamiensis sp. nov. Holotype (NSMT-Pol H- 907). A. Whole body, lateral view (insert: posterior end of paratype); B. Anterior end, lateral view; C Prostomium, frontal view; D. Prostomium, lateral view; E. Notochaetae, chaetiger 12; F. Basal part of notochaeta; G. Neurohook, chaetiger 12; H. Middle part of neurohook. Scale bars: 10 mm (A, B); 2.5 mm (A (insert )); 2 mm (C, D); 200 μm (E); 100 μm (F); 200 μm (G); 100 μm (H). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip." figureDoi="10.3897/zse.99.97944.figure3" httpUri="https://binary.pensoft.net/fig/814852" pageId="0" pageNumber="149">3C</figureCitation>
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). Nephridial lobes not seen. Larger branchiae three times wider than smaller branchiae.
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</paragraph>
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<paragraph pageId="0" pageNumber="149">
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Cephalic cage chaetae about three times longer than body width (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Daylithos amamiensis sp. nov. Holotype (NSMT-Pol H- 907). A. Whole body, lateral view (insert: posterior end of paratype); B. Anterior end, lateral view; C Prostomium, frontal view; D. Prostomium, lateral view; E. Notochaetae, chaetiger 12; F. Basal part of notochaeta; G. Neurohook, chaetiger 12; H. Middle part of neurohook. Scale bars: 10 mm (A, B); 2.5 mm (A (insert )); 2 mm (C, D); 200 μm (E); 100 μm (F); 200 μm (G); 100 μm (H). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip." figureDoi="10.3897/zse.99.97944.figure3" httpUri="https://binary.pensoft.net/fig/814852" pageId="0" pageNumber="149">3A</figureCitation>
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). Chaetiger 1-2 comprising cephalic cage (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Daylithos amamiensis sp. nov. Holotype (NSMT-Pol H- 907). A. Whole body, lateral view (insert: posterior end of paratype); B. Anterior end, lateral view; C Prostomium, frontal view; D. Prostomium, lateral view; E. Notochaetae, chaetiger 12; F. Basal part of notochaeta; G. Neurohook, chaetiger 12; H. Middle part of neurohook. Scale bars: 10 mm (A, B); 2.5 mm (A (insert )); 2 mm (C, D); 200 μm (E); 100 μm (F); 200 μm (G); 100 μm (H). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip." figureDoi="10.3897/zse.99.97944.figure3" httpUri="https://binary.pensoft.net/fig/814852" pageId="0" pageNumber="149">3B</figureCitation>
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); chaetiger 1 with 7 notochaetae and 8 neurochaetae per side; chaetiger 2 with 5 notochaetae and 6 neurochaetae per side. Chaetiger 1 1.5 times longer than chaetigers 2. Chaetae of chaetiger 3 two times longer than the following ones. Chaetal transition from cephalic cage to body chaetae abrupt.
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</paragraph>
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<paragraph pageId="0" pageNumber="149">
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Notopodia poorly developed, lateral; neuropodia ventrolateral in median body. Notopodia and neuropodia widely separated. Parapodial lobes absent. Notochaetae multi-articulated capillaries (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Daylithos amamiensis sp. nov. Holotype (NSMT-Pol H- 907). A. Whole body, lateral view (insert: posterior end of paratype); B. Anterior end, lateral view; C Prostomium, frontal view; D. Prostomium, lateral view; E. Notochaetae, chaetiger 12; F. Basal part of notochaeta; G. Neurohook, chaetiger 12; H. Middle part of neurohook. Scale bars: 10 mm (A, B); 2.5 mm (A (insert )); 2 mm (C, D); 200 μm (E); 100 μm (F); 200 μm (G); 100 μm (H). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip." figureDoi="10.3897/zse.99.97944.figure3" httpUri="https://binary.pensoft.net/fig/814852" pageId="0" pageNumber="149">3E</figureCitation>
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), transparent, 1/4 maximum body width, 2-3 per bundle, with about 110 articles; articles medium-sized distally (12 times as long as wide), short medially and basally (1/2 times as long as wide) (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Daylithos amamiensis sp. nov. Holotype (NSMT-Pol H- 907). A. Whole body, lateral view (insert: posterior end of paratype); B. Anterior end, lateral view; C Prostomium, frontal view; D. Prostomium, lateral view; E. Notochaetae, chaetiger 12; F. Basal part of notochaeta; G. Neurohook, chaetiger 12; H. Middle part of neurohook. Scale bars: 10 mm (A, B); 2.5 mm (A (insert )); 2 mm (C, D); 200 μm (E); 100 μm (F); 200 μm (G); 100 μm (H). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip." figureDoi="10.3897/zse.99.97944.figure3" httpUri="https://binary.pensoft.net/fig/814852" pageId="0" pageNumber="149">3F</figureCitation>
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). Neurochaetae multi-articulated aristate capillaries in chaetigers 1 to 6, 3 per bundle. Neurohooks present in chaetiger 7, arranged in short transverse rows, golden colour (Fig.
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<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Daylithos amamiensis sp. nov. Holotype (NSMT-Pol H- 907). A. Whole body, lateral view (insert: posterior end of paratype); B. Anterior end, lateral view; C Prostomium, frontal view; D. Prostomium, lateral view; E. Notochaetae, chaetiger 12; F. Basal part of notochaeta; G. Neurohook, chaetiger 12; H. Middle part of neurohook. Scale bars: 10 mm (A, B); 2.5 mm (A (insert )); 2 mm (C, D); 200 μm (E); 100 μm (F); 200 μm (G); 100 μm (H). Abbreviations: cc, cephalic cage; ca, caruncle; lb, large branchia; sb, small branchia; p, palp; dl, dorsal lip; ll, lateral lip; vl, ventral lip." figureDoi="10.3897/zse.99.97944.figure3" httpUri="https://binary.pensoft.net/fig/814852" pageId="0" pageNumber="149">3G, H</figureCitation>
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), 1-4 per ramus in anterior chaetigers, 4-6 in posterior chaetigers, curved. About 30 anchylosed articles in larger hooks.
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</paragraph>
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<paragraph pageId="0" pageNumber="149">Posterior end depressed; pygidium with anus terminal, without anal cirri.</paragraph>
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<paragraph pageId="0" pageNumber="149">Oocytes inside middle part of body, blackish in ethanol.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="149" type="etymology">
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<paragraph pageId="0" pageNumber="149">Etymology.</paragraph>
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<paragraph pageId="0" pageNumber="149">This species is named after the type locality, Amami Oshima.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="149" type="distribution">
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<paragraph pageId="0" pageNumber="149">Distribution.</paragraph>
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<paragraph pageId="0" pageNumber="149">
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This species is only known from the type locality, 5 m in depth, Shirahama, Amami-Oshima, Japan; found in burrows within corals (
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<taxonomicName class="Anthozoa" family="Acroporidae" kingdom="Animalia" lsidName="" order="Scleractinia" pageId="0" pageNumber="149" phylum="Cnidaria" rank="family">Acroporidae</taxonomicName>
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).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="149" type="remarks">
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<paragraph pageId="0" pageNumber="149">Remarks.</paragraph>
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<paragraph pageId="0" pageNumber="149">
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<taxonomicName authorityName="Jimi & Fujita & Woo" authorityYear="2023" class="Polychaeta" family="Flabelligeridae" genus="Daylithos" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Daylithos amamiensis" order="Terebellida" pageId="0" pageNumber="149" phylum="Annelida" rank="species" species="amamiensis">
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<emphasis italics="true" pageId="0" pageNumber="149">Daylithos amamiensis</emphasis>
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</taxonomicName>
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sp. nov. resembles
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<taxonomicName lsidName="D. iris" pageId="0" pageNumber="149" rank="species" species="iris">
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<emphasis italics="true" pageId="0" pageNumber="149">D. iris</emphasis>
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</taxonomicName>
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(Michaelsen, 1892) and
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<taxonomicName lsidName="D. japonicus" pageId="0" pageNumber="149" rank="species" species="japonicus">
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<emphasis italics="true" pageId="0" pageNumber="149">D. japonicus</emphasis>
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</taxonomicName>
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sp. nov. in having the greyish body in fixed material, 4-6 neurohooks on far posterior chaetigers and the flat dorsal shield. While neurohooks of
|
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<taxonomicName lsidName="D. amamiensis" pageId="0" pageNumber="149" rank="species" species="amamiensis">
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<emphasis italics="true" pageId="0" pageNumber="149">D. amamiensis</emphasis>
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</taxonomicName>
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are present from chaetiger 7, those of
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<taxonomicName lsidName="D. iris" pageId="0" pageNumber="149" rank="species" species="iris">
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<emphasis italics="true" pageId="0" pageNumber="149">D. iris</emphasis>
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</taxonomicName>
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are from chaetiger 10; and in
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<taxonomicName lsidName="D. japonicus" pageId="0" pageNumber="149" rank="species" species="japonicus">
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<emphasis italics="true" pageId="0" pageNumber="149">D. japonicus</emphasis>
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</taxonomicName>
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, are from chaetiger 8. Eyes are present in
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<taxonomicName lsidName="D. amamiensis" pageId="0" pageNumber="149" rank="species" species="amamiensis">
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<emphasis italics="true" pageId="0" pageNumber="149">D. amamiensis</emphasis>
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</taxonomicName>
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, but absent in
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<taxonomicName lsidName="D. iris" pageId="0" pageNumber="149" rank="species" species="iris">
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<emphasis italics="true" pageId="0" pageNumber="149">D. iris</emphasis>
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</taxonomicName>
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. Further, in
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<taxonomicName lsidName="D. amamiensis" pageId="0" pageNumber="149" rank="species" species="amamiensis">
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<emphasis italics="true" pageId="0" pageNumber="149">D. amamiensis</emphasis>
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</taxonomicName>
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, the body papillae in the anterior row are longer than posterior ones; whereas those in
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<taxonomicName lsidName="D. japonicus" pageId="0" pageNumber="149" rank="species" species="japonicus">
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<emphasis italics="true" pageId="0" pageNumber="149">D. japonicus</emphasis>
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</taxonomicName>
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are similar size to posterior ones.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |