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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.946.50662" ID-GBIF-Dataset="f5e0d2a6-e2ec-4631-aec4-6e1c0d009624" ID-PMC="PMC7358252" ID-Pensoft-Pub="1313-2970-946-1" ID-Pensoft-UUID="68467027C6D45D619D312F90438428B2" ID-PubMed="32728338" ID-ZooBank="F968A6EEFAA34E19B9FCFE768C05DD22" ModsDocID="1313-2970-946-1" checkinTime="1594056359214" checkinUser="pensoft" docAuthor="Lin, Jun-Hui, Garcia-Garza, Maria E., Lyu, Ming-Xin &amp; Wang, Jian-Jun" docDate="2020" docId="B47B8BEE9D345BE6B07F0700E3620CC4" docLanguage="en" docName="ZooKeys 946: 1-16" docOrigin="ZooKeys 946" docSource="http://dx.doi.org/10.3897/zookeys.946.50662" docTitle="Notomastus sunae Lin &amp; García-Garza &amp; Lyu &amp; Wang 2020, sp. nov." docType="treatment" docUuid="1E60348C-F682-457C-862C-D7BED5215024" docUuidSource="ZooBank" docVersion="4" id="68467027C6D45D619D312F90438428B2" lastPageNumber="1" masterDocId="68467027C6D45D619D312F90438428B2" masterDocTitle="A new species of Notomastus (Annelida, Capitellidae) from southern China, with remarks on its morphology and distribution" masterLastPageNumber="16" masterPageNumber="1" pageNumber="1" updateTime="1668169059714" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>A new species of Notomastus (Annelida, Capitellidae) from southern China, with remarks on its morphology and distribution</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Lin, Jun-Hui</mods:namePart>
<mods:affiliation>Third Institute of Oceanography, Ministry of Natural Resources, 178 Daxue Road, Xiamen 361005, China</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Garcia-Garza, Maria E.</mods:namePart>
<mods:affiliation>Universidad Autonoma de Nuevo Leon, Facultad de Ciencias Biologicas, Laboratorio de Biosistematica, Apartado Postal 5 &quot; F &quot;, San Nicolas de los Garza, Nuevo Leon, Mexico</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Lyu, Ming-Xin</mods:namePart>
<mods:affiliation>State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, South Xiang'an Road, Xiamen 361102, China</mods:affiliation>
<mods:nameIdentifier type="email">mingxinlv@stu.xmu.edu.cn</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Wang, Jian-Jun</mods:namePart>
<mods:affiliation>Third Institute of Oceanography, Ministry of Natural Resources, 178 Daxue Road, Xiamen 361005, China</mods:affiliation>
<mods:nameIdentifier type="email">wangjianjun220@tio.org.cn</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
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<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2020</mods:date>
<mods:detail type="volume">
<mods:number>946</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>1</mods:start>
<mods:end>16</mods:end>
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<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.946.50662</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.946.50662</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-946-1</mods:identifier>
<mods:identifier type="ZooBank">F968A6EEFAA34E19B9FCFE768C05DD22</mods:identifier>
<mods:identifier type="Pensoft-UUID">68467027C6D45D619D312F90438428B2</mods:identifier>
</mods:mods>
<treatment ID-GBIF-Taxon="164945633" LSID="urn:lsid:zoobank.org:act:1E60348C-F682-457C-862C-D7BED5215024" httpUri="http://treatment.plazi.org/id/B47B8BEE9D345BE6B07F0700E3620CC4" lastPageNumber="1" pageId="0" pageNumber="1">
<subSubSection pageId="0" pageNumber="1" type="nomenclature">
<paragraph pageId="0" pageNumber="1">
<taxonomicName LSID="B47B8BEE-9D34-5BE6-B07F-0700E3620CC4" authority="Lin &amp; García-Garza &amp; Lyu &amp; Wang, 2020" authorityName="Lin &amp; García-Garza &amp; Lyu &amp; Wang" authorityYear="2020" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus sunae" order="Capitellida" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="sunae" status="sp. nov.">Notomastus sunae</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="1">sp. nov.</taxonomicNameLabel>
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">Figures 2A-F</figureCitation>
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Notomastus sunae sp. nov., holotype. A MGSP of whole body B anterior end in lateral view C MGSP of transitional segments (chaetigers 9 - 17) between thorax and abdomen in ventrolateral view D MGSP of transitional segments (chaetigers 7 - 17) between thorax and abdomen in dorsal view E posterior end in ventrolateral view F posterior segments near pygidium in dorsal view. Abbreviations: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; neu, neuropodia; no, notopodia; pal, palpode; per, peristomium; prob, proboscis; pyg, pygidium. Scale bars: 1 mm (A); 1 mm (B-E)." figureDoi="10.3897/zookeys.946.50662.figure3" httpUri="https://binary.pensoft.net/fig/429335" pageId="0" pageNumber="1">, 3A-F</figureCitation>
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. SEM photos of Notomastus sunae sp. nov., paratype (TIO-BTS-Poly- 115) A anterior body in lateral view B anterior end in dorsolateral view C chaetigers 8 - 12 in lateral view D capillary chaetae E-G hooded hooks. Abbreviation: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; mf, main fang; pal, palpode; per, peristomium. Scale bars: 100 μm (A-C); 20 μm (D); 10 μm (E); 2 μm (F, G)." figureDoi="10.3897/zookeys.946.50662.figure4" httpUri="https://binary.pensoft.net/fig/429336" pageId="0" pageNumber="1">, 4A-G</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="type material">
<paragraph pageId="0" pageNumber="1">Type material examined.</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Holotype</emphasis>
: TIO-BTS-Poly-114 (sta. XM12)-Xiamen Bay, Fujian Province, [
<geoCoordinate degrees="24" direction="north" minutes="33" orientation="latitude" precision="15" seconds="54" value="24.564999">24°33'54&quot;N</geoCoordinate>
,
<geoCoordinate degrees="118" direction="east" minutes="10" orientation="longitude" precision="15" seconds="00" value="118.166664">118°10'00&quot;E</geoCoordinate>
], 6 m, mud, complete, 25 August 2018, coll. Junhui Lin.
<emphasis bold="true" italics="true" pageId="0" pageNumber="1">Paratypes</emphasis>
: TIO-BTS-Poly-115-6 specimens, same information as holotype, one mounted on SEM stub; TIO-BTS-Poly-116 (sta. QPW1-4)-9 specimens, Xiamen Bay, [
<geoCoordinate degrees="24" direction="north" minutes="27" orientation="latitude" precision="15" seconds="16" value="24.454445">24°27'16&quot;N</geoCoordinate>
,
<geoCoordinate degrees="118" direction="east" minutes="10" orientation="longitude" precision="15" seconds="20" value="118.17222">118°10'20&quot;E</geoCoordinate>
], intertidal, muddy sand, 23 January 2019; TIO-BTS-Poly-117-9 specimens, 4 April 2019; TIO-BTS-Poly-118-23 specimens, 24 July 2019; TIO-BTS-Poly-119-4 specimens, 13 September 2019; TIO-BTS-Poly-120-16 specimens, 30 October 2019. Specimens (from TIO-BTS-Poly-116 to TIO-BTS-Poly-120) collected from the identical site (QPW1-4) by Junhui Lin.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="materials_examined">
<paragraph pageId="0" pageNumber="1">Additional material examined.</paragraph>
<paragraph pageId="0" pageNumber="1">
TIO-BTS-Poly-121 (sta. XHW04)-3 specimens, Xinghua Bay (Fujian Province), [
<geoCoordinate degrees="25" direction="north" minutes="25" orientation="latitude" precision="15" seconds="55" value="25.431944">25°25'55&quot;N</geoCoordinate>
,
<geoCoordinate degrees="119" direction="east" minutes="24" orientation="longitude" precision="15" seconds="16" value="119.40445">119°24'16&quot;E</geoCoordinate>
], 7 m, mud, 17 April 2019, coll. Zhong Li; TIO-BTS-Poly-122 (sta. DS06)-1 specimen, Dongshan Bay (Fujian Province), [
<geoCoordinate degrees="23" direction="north" minutes="48" orientation="latitude" precision="15" seconds="57" value="23.815832">23°48'57&quot;N</geoCoordinate>
,
<geoCoordinate degrees="117" direction="east" minutes="31" orientation="longitude" precision="15" seconds="41" value="117.52806">117°31'41&quot;E</geoCoordinate>
], 5 m, mud, 26 February 2019, coll. Heshan Lin; TIO-BTS-Poly-123-2 specimens, same location as TIO-BTS-Poly-122, 17 June 2019, coll. Heshan Lin; TIO-BTS-Poly-124-6 specimens, Jieshi Bay (Guangdong Province), [
<geoCoordinate degrees="22" direction="north" minutes="45" orientation="latitude" precision="15" seconds="22" value="22.756111">22°45'22&quot;N</geoCoordinate>
,
<geoCoordinate degrees="115" direction="east" minutes="47" orientation="longitude" precision="15" seconds="09" value="115.785835">115°47'09&quot;E</geoCoordinate>
], 8 m, mud, 19 August 2019, coll. Zhizhong Huang; TIO-BTS-Poly-125-2 specimens, [
<geoCoordinate degrees="22" direction="north" minutes="42" orientation="latitude" precision="15" seconds="40" value="22.711111">22°42'40&quot;N</geoCoordinate>
,
<geoCoordinate degrees="115" direction="east" minutes="48" orientation="longitude" precision="15" seconds="10" value="115.80278">115°48'10&quot;E</geoCoordinate>
], 21 m, muddy sand, 19 August 2019, coll. Zhizhong Huang; TIO-BTS-Poly-126-1 specimen, Daya Bay (Guangdong Province), [
<geoCoordinate degrees="22" direction="north" minutes="34" orientation="latitude" precision="15" seconds="42" value="22.578335">22°34'42&quot;N</geoCoordinate>
,
<geoCoordinate degrees="114" direction="east" minutes="33" orientation="longitude" precision="15" seconds="30" value="114.558334">114°33'30&quot;E</geoCoordinate>
], 12.5 m, mud, 20 February 2016, coll. Junhui Lin; TIO-BTS-Poly-127-2 specimens, outside Pearl River estuary (Guangdong Province), [
<geoCoordinate degrees="21" direction="north" minutes="54" orientation="latitude" precision="15" seconds="49" value="21.91361">21°54'49&quot;N</geoCoordinate>
,
<geoCoordinate degrees="113" direction="east" minutes="42" orientation="longitude" precision="15" seconds="15" value="113.70416">113°42'15&quot;E</geoCoordinate>
], 23 m, muddy sand, 24 October 2019, coll. Zhizhong Huang; TIO-BTS-Poly-128 (sta. GFC-S23)-4 specimens, Qinzhou Bay (Guangxi Province), [
<geoCoordinate degrees="21" direction="north" minutes="35" orientation="latitude" precision="15" seconds="04" value="21.584446">21°35'04&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="32" orientation="longitude" precision="15" seconds="07" value="108.53528">108°32'07&quot;E</geoCoordinate>
], 7 m, muddy sand, 28 October 2017, coll. Zhong Li; TIO-BTS-Poly-129 (sta. GFC-S11)-1 specimen, [
<geoCoordinate degrees="21" direction="north" minutes="37" orientation="latitude" precision="15" seconds="34" value="21.626112">21°37'34&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="38" orientation="longitude" precision="15" seconds="15" value="108.6375">108°38'15&quot;E</geoCoordinate>
], 9.5 m, muddy sand, 20 April 2018, coll. Zhong Li; TIO-BTS-Poly-130 (sta. GFC-S23)-1 specimen, same location as TIO-BTS-Poly-128, 19 April 2018, coll. Zhong Li; TIO-BTS-Poly-131 (sta. GFC-S33)-1 specimen, [
<geoCoordinate degrees="21" direction="north" minutes="34" orientation="latitude" precision="15" seconds="31" value="21.57528">21°34'31&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="52" orientation="longitude" precision="15" seconds="42" value="108.878334">108°52'42&quot;E</geoCoordinate>
], 7 m, muddy sand, 21 April 2018, coll. Zhong Li; TIO-BTS-Poly-132 (sta. GFC-S02)-2 specimens, [
<geoCoordinate degrees="21" direction="north" minutes="37" orientation="latitude" precision="15" seconds="32" value="21.625555">21°37'32&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="34" orientation="longitude" precision="15" seconds="57" value="108.5825">108°34'57&quot;E</geoCoordinate>
], 12 m, mud, 17 August 2018, coll. Zhong Li; TIO-BTS-Poly-133 (sta. GFC-S19)-2 specimens, [
<geoCoordinate degrees="21" direction="north" minutes="31" orientation="latitude" precision="15" seconds="55" value="21.531944">21°31'55&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="34" orientation="longitude" precision="15" seconds="29" value="108.57472">108°34'29&quot;E</geoCoordinate>
], 12 m, sand with shell fragment, 17 August 2018, coll. Zhong Li; TIO-BTS-Poly-134 (sta. GFC-S48)-1 specimen, [
<geoCoordinate degrees="21" direction="north" minutes="39" orientation="latitude" precision="15" seconds="29" value="21.658054">21°39'29&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="36" orientation="longitude" precision="15" seconds="47" value="108.61305">108°36'47&quot;E</geoCoordinate>
], 14 m, mud, 17 August 2018, coll. Zhong Li; TIO-BTS-Poly-135 (sta. CJ03)-2 specimens, off western Hainan Island, [
<geoCoordinate degrees="19" direction="north" minutes="27" orientation="latitude" precision="15" seconds="56" value="19.465557">19°27'56&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="49" orientation="longitude" precision="15" seconds="40" value="108.827774">108°49'40&quot;E</geoCoordinate>
], 20 m, muddy sand, 22 May 2019, coll. Zhong Li; TIO-BTS-Poly-136 (sta. CJ07)-2 specimens, [
<geoCoordinate degrees="19" direction="north" minutes="29" orientation="latitude" precision="15" seconds="46" value="19.49611">19°29'46&quot;N</geoCoordinate>
,
<geoCoordinate degrees="108" direction="east" minutes="50" orientation="longitude" precision="15" seconds="24" value="108.840004">108°50'24&quot;E</geoCoordinate>
], 18 m, muddy sand, 22 May 2019, coll. Zhong Li.
</paragraph>
<caption doi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1" start="Figure 2" startId="F2">
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" pageId="0" pageNumber="1">Figure 2.</emphasis>
<taxonomicName authorityName="Lin &amp; García-Garza &amp; Lyu &amp; Wang" authorityYear="2020" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus sunae" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="sunae">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus sunae</emphasis>
</taxonomicName>
sp. nov., holotype.
<emphasis bold="true" pageId="0" pageNumber="1">A</emphasis>
thorax and anterior abdomen (14 chaetigers) in ventrolateral view
<emphasis bold="true" pageId="0" pageNumber="1">B</emphasis>
thorax and anterior abdomen (18 chaetigers) in dorsal view
<emphasis bold="true" pageId="0" pageNumber="1">C</emphasis>
anterior end in lateral view, showing eyespots and papillae
<emphasis bold="true" pageId="0" pageNumber="1">D</emphasis>
chaetigers 10-19 in ventrolateral view, showing transition between thorax and abdomen
<emphasis bold="true" pageId="0" pageNumber="1">E</emphasis>
far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions
<emphasis bold="true" pageId="0" pageNumber="1">F</emphasis>
abdominal hooded hooks. Shading on
<emphasis bold="true" pageId="0" pageNumber="1">B</emphasis>
and
<emphasis bold="true" pageId="0" pageNumber="1">D</emphasis>
indicates methyl green staining. Scale bars: 1 mm (
<emphasis bold="true" pageId="0" pageNumber="1">A-E</emphasis>
); 20
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="1">F</emphasis>
).
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="type material">
<paragraph pageId="0" pageNumber="1">Comparative type material.</paragraph>
<paragraph pageId="0" pageNumber="1">
<taxonomicName class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus hemipodus" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="hemipodus">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus hemipodus</emphasis>
</taxonomicName>
Hartman, 1945, holotype: LACM-AHF Poly-414-North Carolina, Bogue Sound, dredged in a few feet of water, 15 June 1940; paratypes: LACM-AHF Poly-415-North Carolina, Bogue Sound, June 1940; LACM-AHF Poly 2667-muddy sand at low tide, June 1940; LACM-AHF Poly 2668-incomplete, muddy sand flats at low water, June 1940; LACM-AHF Poly-2669-incomplete, outer end of Bird Shoal, 18 June 1940, coll. O. Hartman.
<taxonomicName authorityName="Day" authorityYear="1973" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus americanus" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="americanus">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus americanus</emphasis>
</taxonomicName>
Day, 1973, Holotype: USNM 43118-North Carolina, Beaufort, 4 June 1965; Paratype: USNM 43119-North Carolina, Beaufort, 4 June 1965 coll. J. Day.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="sequence">
<paragraph pageId="0" pageNumber="1">Sequence.</paragraph>
<paragraph pageId="0" pageNumber="1">MT055861 (18S, 1637 bp), MT055862 (H3, 316 bp), MT055863 (CO, 650 bp), determined from paratype (TIO-BTS-Poly-118).</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="description">
<paragraph pageId="0" pageNumber="1">Description.</paragraph>
<paragraph pageId="0" pageNumber="1">
Holotype complete with over 100 chaetigers (Fig.
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Notomastus sunae sp. nov., holotype. A MGSP of whole body B anterior end in lateral view C MGSP of transitional segments (chaetigers 9 - 17) between thorax and abdomen in ventrolateral view D MGSP of transitional segments (chaetigers 7 - 17) between thorax and abdomen in dorsal view E posterior end in ventrolateral view F posterior segments near pygidium in dorsal view. Abbreviations: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; neu, neuropodia; no, notopodia; pal, palpode; per, peristomium; prob, proboscis; pyg, pygidium. Scale bars: 1 mm (A); 1 mm (B-E)." figureDoi="10.3897/zookeys.946.50662.figure3" httpUri="https://binary.pensoft.net/fig/429335" pageId="0" pageNumber="1">3A</figureCitation>
), measuring 33.74 mm long by 0.8 mm wide. Paratypes complete or incomplete, ranging from 6.81-43.02 mm long, 0.57-0.90 mm wide for 19-103 chaetigers. Color in alcohol tan (Fig.
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Notomastus sunae sp. nov., holotype. A MGSP of whole body B anterior end in lateral view C MGSP of transitional segments (chaetigers 9 - 17) between thorax and abdomen in ventrolateral view D MGSP of transitional segments (chaetigers 7 - 17) between thorax and abdomen in dorsal view E posterior end in ventrolateral view F posterior segments near pygidium in dorsal view. Abbreviations: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; neu, neuropodia; no, notopodia; pal, palpode; per, peristomium; prob, proboscis; pyg, pygidium. Scale bars: 1 mm (A); 1 mm (B-E)." figureDoi="10.3897/zookeys.946.50662.figure3" httpUri="https://binary.pensoft.net/fig/429335" pageId="0" pageNumber="1">3B</figureCitation>
). Thorax dorsally rounded, ventrally flattened, widest at chaetiger 3. Prostomium conical, with narrow palpode (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A-C</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Notomastus sunae sp. nov., holotype. A MGSP of whole body B anterior end in lateral view C MGSP of transitional segments (chaetigers 9 - 17) between thorax and abdomen in ventrolateral view D MGSP of transitional segments (chaetigers 7 - 17) between thorax and abdomen in dorsal view E posterior end in ventrolateral view F posterior segments near pygidium in dorsal view. Abbreviations: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; neu, neuropodia; no, notopodia; pal, palpode; per, peristomium; prob, proboscis; pyg, pygidium. Scale bars: 1 mm (A); 1 mm (B-E)." figureDoi="10.3897/zookeys.946.50662.figure3" httpUri="https://binary.pensoft.net/fig/429335" pageId="0" pageNumber="1">3B</figureCitation>
,
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. SEM photos of Notomastus sunae sp. nov., paratype (TIO-BTS-Poly- 115) A anterior body in lateral view B anterior end in dorsolateral view C chaetigers 8 - 12 in lateral view D capillary chaetae E-G hooded hooks. Abbreviation: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; mf, main fang; pal, palpode; per, peristomium. Scale bars: 100 μm (A-C); 20 μm (D); 10 μm (E); 2 μm (F, G)." figureDoi="10.3897/zookeys.946.50662.figure4" httpUri="https://binary.pensoft.net/fig/429336" pageId="0" pageNumber="1">4A, B</figureCitation>
). Everted proboscis globular, with numerous minute papillae (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A-C</figureCitation>
). Eyespots present on lateral sides of prostomium (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A, C</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Notomastus sunae sp. nov., holotype. A MGSP of whole body B anterior end in lateral view C MGSP of transitional segments (chaetigers 9 - 17) between thorax and abdomen in ventrolateral view D MGSP of transitional segments (chaetigers 7 - 17) between thorax and abdomen in dorsal view E posterior end in ventrolateral view F posterior segments near pygidium in dorsal view. Abbreviations: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; neu, neuropodia; no, notopodia; pal, palpode; per, peristomium; prob, proboscis; pyg, pygidium. Scale bars: 1 mm (A); 1 mm (B-E)." figureDoi="10.3897/zookeys.946.50662.figure3" httpUri="https://binary.pensoft.net/fig/429335" pageId="0" pageNumber="1">3B</figureCitation>
). Peristomium achaetous, wider than long, as wide as first chaetiger, but longer (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A</figureCitation>
). Thorax slightly areolated in anterior 4-5 chaetigers, remaining chaetigers smooth.
</paragraph>
<caption doi="10.3897/zookeys.946.50662.figure3" httpUri="https://binary.pensoft.net/fig/429335" pageId="0" pageNumber="1" start="Figure 3" startId="F3">
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" pageId="0" pageNumber="1">Figure 3.</emphasis>
<taxonomicName authorityName="Lin &amp; García-Garza &amp; Lyu &amp; Wang" authorityYear="2020" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus sunae" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="sunae">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus sunae</emphasis>
</taxonomicName>
sp. nov., holotype.
<emphasis bold="true" pageId="0" pageNumber="1">A</emphasis>
MGSP of whole body
<emphasis bold="true" pageId="0" pageNumber="1">B</emphasis>
anterior end in lateral view
<emphasis bold="true" pageId="0" pageNumber="1">C</emphasis>
MGSP of transitional segments (chaetigers 9-17) between thorax and abdomen in ventrolateral view
<emphasis bold="true" pageId="0" pageNumber="1">D</emphasis>
MGSP of transitional segments (chaetigers 7-17) between thorax and abdomen in dorsal view
<emphasis bold="true" pageId="0" pageNumber="1">E</emphasis>
posterior end in ventrolateral view
<emphasis bold="true" pageId="0" pageNumber="1">F</emphasis>
posterior segments near pygidium in dorsal view. Abbreviations: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; neu, neuropodia; no, notopodia; pal, palpode; per, peristomium; prob, proboscis; pyg, pygidium. Scale bars: 1 mm (
<emphasis bold="true" pageId="0" pageNumber="1">A</emphasis>
); 1 mm (
<emphasis bold="true" pageId="0" pageNumber="1">B-E</emphasis>
).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="1">
Thorax consisted of an achaetous peristomium and 11 chaetigers (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A, B</figureCitation>
). Chaetiger 1 uniramous (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A, C</figureCitation>
,
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. SEM photos of Notomastus sunae sp. nov., paratype (TIO-BTS-Poly- 115) A anterior body in lateral view B anterior end in dorsolateral view C chaetigers 8 - 12 in lateral view D capillary chaetae E-G hooded hooks. Abbreviation: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; mf, main fang; pal, palpode; per, peristomium. Scale bars: 100 μm (A-C); 20 μm (D); 10 μm (E); 2 μm (F, G)." figureDoi="10.3897/zookeys.946.50662.figure4" httpUri="https://binary.pensoft.net/fig/429336" pageId="0" pageNumber="1">4A, B</figureCitation>
), with capillaries in notopodia only. Chaetigers 2-10 with only capillaries in both rami (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A, B</figureCitation>
,
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. SEM photos of Notomastus sunae sp. nov., paratype (TIO-BTS-Poly- 115) A anterior body in lateral view B anterior end in dorsolateral view C chaetigers 8 - 12 in lateral view D capillary chaetae E-G hooded hooks. Abbreviation: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; mf, main fang; pal, palpode; per, peristomium. Scale bars: 100 μm (A-C); 20 μm (D); 10 μm (E); 2 μm (F, G)." figureDoi="10.3897/zookeys.946.50662.figure4" httpUri="https://binary.pensoft.net/fig/429336" pageId="0" pageNumber="1">4A, D</figureCitation>
). All capillaries bilimbate. Chaetiger 11 transitional with notopodial capillaries and neuropodial hooded hooks (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A, D</figureCitation>
,
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. SEM photos of Notomastus sunae sp. nov., paratype (TIO-BTS-Poly- 115) A anterior body in lateral view B anterior end in dorsolateral view C chaetigers 8 - 12 in lateral view D capillary chaetae E-G hooded hooks. Abbreviation: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; mf, main fang; pal, palpode; per, peristomium. Scale bars: 100 μm (A-C); 20 μm (D); 10 μm (E); 2 μm (F, G)." figureDoi="10.3897/zookeys.946.50662.figure4" httpUri="https://binary.pensoft.net/fig/429336" pageId="0" pageNumber="1">4A, C</figureCitation>
). Chaetigers 1-4 slightly expanded. Chaetigers 6-10 biannulated with intra- and inter-segmental grooves (more evident in lateral view), wider than long (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A, B</figureCitation>
). Notopodia inserted dorsolaterally in first five thoracic chaetgiers, then notopodia inserted dorsally from chaetiger 6 to posterior thorax (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2B</figureCitation>
). Neuropodia ventrolateral. Chaetal fascicles inserted just posterior to midline of thoracic segments (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A, B</figureCitation>
,
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. SEM photos of Notomastus sunae sp. nov., paratype (TIO-BTS-Poly- 115) A anterior body in lateral view B anterior end in dorsolateral view C chaetigers 8 - 12 in lateral view D capillary chaetae E-G hooded hooks. Abbreviation: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; mf, main fang; pal, palpode; per, peristomium. Scale bars: 100 μm (A-C); 20 μm (D); 10 μm (E); 2 μm (F, G)." figureDoi="10.3897/zookeys.946.50662.figure4" httpUri="https://binary.pensoft.net/fig/429336" pageId="0" pageNumber="1">4A</figureCitation>
). Notopodia of chaetigers 1-11 and neuropodia of chaetigers 2-10 each with 10-25 capillaries per fascicle; neuropodia of chaetigers 11 with approximately 16 hooks per fascicle. Thoracic hooks of similar shape to abdominal hooks, but shaft markedly longer. Lateral organs conspicuous in thorax and anterior abdomen, located between noto- and neuropodia, closer to notopodia, as small rounded pores (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A-C</figureCitation>
). Genital pores present on intersegmental grooves of between chaetigers 7/8, 8/9, 9/10, and 10/11 on holotype.
</paragraph>
<paragraph pageId="0" pageNumber="1">
Transition between thorax and abdomen marked by change in chaetal arrangement and methyl green staining pattern (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A, B, D</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Notomastus sunae sp. nov., holotype. A MGSP of whole body B anterior end in lateral view C MGSP of transitional segments (chaetigers 9 - 17) between thorax and abdomen in ventrolateral view D MGSP of transitional segments (chaetigers 7 - 17) between thorax and abdomen in dorsal view E posterior end in ventrolateral view F posterior segments near pygidium in dorsal view. Abbreviations: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; neu, neuropodia; no, notopodia; pal, palpode; per, peristomium; prob, proboscis; pyg, pygidium. Scale bars: 1 mm (A); 1 mm (B-E)." figureDoi="10.3897/zookeys.946.50662.figure3" httpUri="https://binary.pensoft.net/fig/429335" pageId="0" pageNumber="1">3C, D</figureCitation>
,
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. SEM photos of Notomastus sunae sp. nov., paratype (TIO-BTS-Poly- 115) A anterior body in lateral view B anterior end in dorsolateral view C chaetigers 8 - 12 in lateral view D capillary chaetae E-G hooded hooks. Abbreviation: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; mf, main fang; pal, palpode; per, peristomium. Scale bars: 100 μm (A-C); 20 μm (D); 10 μm (E); 2 μm (F, G)." figureDoi="10.3897/zookeys.946.50662.figure4" httpUri="https://binary.pensoft.net/fig/429336" pageId="0" pageNumber="1">4A</figureCitation>
). First abdominal segment as wide as last thoracic chaetiger, but slightly shorter (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A, B</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Notomastus sunae sp. nov., holotype. A MGSP of whole body B anterior end in lateral view C MGSP of transitional segments (chaetigers 9 - 17) between thorax and abdomen in ventrolateral view D MGSP of transitional segments (chaetigers 7 - 17) between thorax and abdomen in dorsal view E posterior end in ventrolateral view F posterior segments near pygidium in dorsal view. Abbreviations: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; neu, neuropodia; no, notopodia; pal, palpode; per, peristomium; prob, proboscis; pyg, pygidium. Scale bars: 1 mm (A); 1 mm (B-E)." figureDoi="10.3897/zookeys.946.50662.figure3" httpUri="https://binary.pensoft.net/fig/429335" pageId="0" pageNumber="1">3C, D</figureCitation>
). Parapodial lobes reduced in anterior abdomen, well separated (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2A, B</figureCitation>
). Notopodial lobes located dorsally (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2B</figureCitation>
), close together in anterior abdomen, becoming dorsolateral in posterior abdomen. Neuropodial lobes lateral, separated ventrally. Chaetal fascicles positioned posterior to midsegment in anterior abdomen (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2B, D</figureCitation>
), and near posterior edge of segment toward the pygidium (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2E</figureCitation>
). In the far posterior, notopodial lobes with a simple epithelial extension (Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2E</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Notomastus sunae sp. nov., holotype. A MGSP of whole body B anterior end in lateral view C MGSP of transitional segments (chaetigers 9 - 17) between thorax and abdomen in ventrolateral view D MGSP of transitional segments (chaetigers 7 - 17) between thorax and abdomen in dorsal view E posterior end in ventrolateral view F posterior segments near pygidium in dorsal view. Abbreviations: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; neu, neuropodia; no, notopodia; pal, palpode; per, peristomium; prob, proboscis; pyg, pygidium. Scale bars: 1 mm (A); 1 mm (B-E)." figureDoi="10.3897/zookeys.946.50662.figure3" httpUri="https://binary.pensoft.net/fig/429335" pageId="0" pageNumber="1">3E</figureCitation>
), broadly-based and rounded-tipped. In anterior abdomen, chaetal fascicles with approximately 10 hooks in notopodia and 16 hooks in neuropodia, decreasing to 6 hooks in notopodia and 10 hooks in neuropodia in posterior abdomen, and to 1-2 hooks in segments near pygidium. Notopodial and neuropodial abdominal hooded hooks of similar shape, with angled node, evident constriction, developed shoulder, posterior shaft longer than anterior one, attenuated to terminal end (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2F</figureCitation>
). Hood smooth, slightly longer than wide (Fig.
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2F</figureCitation>
). Abdominal hooded hooks (Fig.
<figureCitation captionStart="Figure 4" captionStartId="F4" captionText="Figure 4. SEM photos of Notomastus sunae sp. nov., paratype (TIO-BTS-Poly- 115) A anterior body in lateral view B anterior end in dorsolateral view C chaetigers 8 - 12 in lateral view D capillary chaetae E-G hooded hooks. Abbreviation: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; mf, main fang; pal, palpode; per, peristomium. Scale bars: 100 μm (A-C); 20 μm (D); 10 μm (E); 2 μm (F, G)." figureDoi="10.3897/zookeys.946.50662.figure4" httpUri="https://binary.pensoft.net/fig/429336" pageId="0" pageNumber="1">4E-G</figureCitation>
) with multiple rows of teeth above main fang: 4-5 teeth in basal row, 6-8 teeth in second row, and at least 6 teeth in superior row.
</paragraph>
<caption doi="10.3897/zookeys.946.50662.figure4" httpUri="https://binary.pensoft.net/fig/429336" pageId="0" pageNumber="1" start="Figure 4" startId="F4">
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" pageId="0" pageNumber="1">Figure 4.</emphasis>
SEM photos of
<taxonomicName authorityName="Lin &amp; García-Garza &amp; Lyu &amp; Wang" authorityYear="2020" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus sunae" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="sunae">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus sunae</emphasis>
</taxonomicName>
sp. nov., paratype (TIO-BTS-Poly-115)
<emphasis bold="true" pageId="0" pageNumber="1">A</emphasis>
anterior body in lateral view
<emphasis bold="true" pageId="0" pageNumber="1">B</emphasis>
anterior end in dorsolateral view
<emphasis bold="true" pageId="0" pageNumber="1">C</emphasis>
chaetigers 8-12 in lateral view
<emphasis bold="true" pageId="0" pageNumber="1">D</emphasis>
capillary chaetae
<emphasis bold="true" pageId="0" pageNumber="1">E-G</emphasis>
hooded hooks. Abbreviation: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; mf, main fang; pal, palpode; per, peristomium. Scale bars: 100
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="1">A-C</emphasis>
); 20
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="1">D</emphasis>
); 10
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="1">E</emphasis>
); 2
<normalizedToken originalValue="μm">μm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="1">F, G</emphasis>
).
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="1">
No branchiae observed in abdomen. Regenerated pygidium simple, without anal cirri (Fig.
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Notomastus sunae sp. nov., holotype. A MGSP of whole body B anterior end in lateral view C MGSP of transitional segments (chaetigers 9 - 17) between thorax and abdomen in ventrolateral view D MGSP of transitional segments (chaetigers 7 - 17) between thorax and abdomen in dorsal view E posterior end in ventrolateral view F posterior segments near pygidium in dorsal view. Abbreviations: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; neu, neuropodia; no, notopodia; pal, palpode; per, peristomium; prob, proboscis; pyg, pygidium. Scale bars: 1 mm (A); 1 mm (B-E)." figureDoi="10.3897/zookeys.946.50662.figure3" httpUri="https://binary.pensoft.net/fig/429335" pageId="0" pageNumber="1">3E, F</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="methyl green staining pattern">
<paragraph pageId="0" pageNumber="1">Methyl green staining pattern</paragraph>
<paragraph pageId="0" pageNumber="1">
(Figs
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Notomastus sunae sp. nov., holotype. A thorax and anterior abdomen (14 chaetigers) in ventrolateral view B thorax and anterior abdomen (18 chaetigers) in dorsal view C anterior end in lateral view, showing eyespots and papillae D chaetigers 10 - 19 in ventrolateral view, showing transition between thorax and abdomen E far posterior abdomen in dorsal view, showing notopodia with simple epithelial extensions F abdominal hooded hooks. Shading on B and D indicates methyl green staining. Scale bars: 1 mm (A-E); 20 μm (F)." figureDoi="10.3897/zookeys.946.50662.figure2" httpUri="https://binary.pensoft.net/fig/429334" pageId="0" pageNumber="1">2B, D</figureCitation>
,
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Notomastus sunae sp. nov., holotype. A MGSP of whole body B anterior end in lateral view C MGSP of transitional segments (chaetigers 9 - 17) between thorax and abdomen in ventrolateral view D MGSP of transitional segments (chaetigers 7 - 17) between thorax and abdomen in dorsal view E posterior end in ventrolateral view F posterior segments near pygidium in dorsal view. Abbreviations: cc, capillary chaetae; ch, chaetiger; hh, hooded hooks; neu, neuropodia; no, notopodia; pal, palpode; per, peristomium; prob, proboscis; pyg, pygidium. Scale bars: 1 mm (A); 1 mm (B-E)." figureDoi="10.3897/zookeys.946.50662.figure3" httpUri="https://binary.pensoft.net/fig/429335" pageId="0" pageNumber="1">3A, C, D</figureCitation>
). Thorax stained with blue with slightly different intensity whereas abdomen stained with very dark blue. From postchaetal area of chaetiger 12, abdominal segments dorsally stained with dark blue, extending ventrallaterally, interrupted by parapodial lobes and lateral organs. Toward posterior abdomen, blue stain on abdominal dorsum faded gradually. From chaetiger 13, abdominal segments with paired stripes of ventral stain with darker intensity, interrupted by intersegmental rings.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="distribution">
<paragraph pageId="0" pageNumber="1">Distribution.</paragraph>
<paragraph pageId="0" pageNumber="1">
The new species is widely distributed along the southern coasts of China, from Fujian Province westward to Guangxi Province, and southward to Hainan Province (Fig.
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Type locality and collection localities of Notomastus sunae sp. nov., 1 Xiamen Bay (Fujian Province) 2 Xinghua Bay (Fujian Province) 3 Dongshan Bay (Fujian Province) 4 Jieshi Bay (Guangdong Province) 5 Daya Bay (Guangdong Province) 6 outside Pearl River estuary (Guangdong Province) 7 Qinzhou Bay (Guangxi Province) 8 water off western Hainan Island." figureDoi="10.3897/zookeys.946.50662.figure1" httpUri="https://binary.pensoft.net/fig/429333" pageId="0" pageNumber="1">1</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="ecology">
<paragraph pageId="0" pageNumber="1">Ecology.</paragraph>
<paragraph pageId="0" pageNumber="1">The examined specimens were collected from intertidal to shallow subtidal coastal waters (~23 m). Sediment was mainly characterized by mud or muddy sand. The new species is especially abundant in nearshore waters off eastern Xiamen Island, Fujian Province.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="etymology">
<paragraph pageId="0" pageNumber="1">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="1">The species is named after Professor Ruiping Sun, in recognition of her contribution to the study of polychaetes from China Seas.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="variation">
<paragraph pageId="0" pageNumber="1">Variation.</paragraph>
<paragraph pageId="0" pageNumber="1">Eyespots on prostomium were indistinct in several specimens due to preservation in alcohol. MGSP on chaetigers 11-12 may be different among individuals. Some specimens have darker stain on post-chaetal area of chaetiger 11.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="remarks">
<paragraph pageId="0" pageNumber="1">Remarks.</paragraph>
<paragraph pageId="0" pageNumber="1">
As the most species-rich genus of
<taxonomicName authorityName="Grube" authorityYear="1862" family="Capitellidae" lsidName="" pageId="0" pageNumber="1" rank="family">Capitellidae</taxonomicName>
,
<taxonomicName authorityName="Sars" authorityYear="1851" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus" pageId="0" pageNumber="1" phylum="Annelida" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus</emphasis>
</taxonomicName>
has more morphological variability, including variation in the structure of the last thoracic chaetigers. Although it is known that hooks may be replaced by capillaries in the middle-posterior thorax of capitellids during ontogeny (
<bibRefCitation author="Blake, JA" editor="Blake, JA" journalOrPublisher="Vol. 7. The Annelida, Part 4, Polychaeta: Flabelligeridae to Sternaspidae. Santa Barbara Museum of Natural History, California" pageId="0" pageNumber="1" pagination="47 - 96" refId="B1" refString="Blake, JA, 2000. Family Capitellidae Grube, 1862. In: Blake, JA, Hilbig, B, Scott, PV, Eds., Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and the Western Santa Barbara Channel. Vol. 7. The Annelida, Part 4, Polychaeta: Flabelligeridae to Sternaspidae. Santa Barbara Museum of Natural History, California: 47 - 96" title="Family Capitellidae Grube, 1862." volumeTitle="Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and the Western Santa Barbara Channel." year="2000">Blake 2000</bibRefCitation>
), such as the example of
<taxonomicName class="Polychaeta" family="Capitellidae" genus="Heteromastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Heteromastus" pageId="0" pageNumber="1" phylum="Annelida" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="1">Heteromastus</emphasis>
</taxonomicName>
(Warren and Hutchings 1994), several authors have confirmed the presence of neuropodial hooks in posterior thorax of some
<taxonomicName authorityName="Sars" authorityYear="1851" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus" pageId="0" pageNumber="1" phylum="Annelida" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus</emphasis>
</taxonomicName>
species even when in adulthood (
<bibRefCitation author="Ewing, RM" journalOrPublisher="Proceedings of the Biological Society of Washington" pageId="0" pageNumber="1" pagination="232 - 237" refId="B7" refString="Ewing, RM, 1982. A partial revision of the genus Notomastus (Polychaeta: Capitellidae) with a description of a new species from the Gulf of Mexico. Proceedings of the Biological Society of Washington 95 (2): 232 - 237" title="A partial revision of the genus Notomastus (Polychaeta: Capitellidae) with a description of a new species from the Gulf of Mexico." volume="95" year="1982">Ewing 1982</bibRefCitation>
;
<bibRefCitation author="Blake, JA" editor="Blake, JA" journalOrPublisher="Vol. 7. The Annelida, Part 4, Polychaeta: Flabelligeridae to Sternaspidae. Santa Barbara Museum of Natural History, California" pageId="0" pageNumber="1" pagination="47 - 96" refId="B1" refString="Blake, JA, 2000. Family Capitellidae Grube, 1862. In: Blake, JA, Hilbig, B, Scott, PV, Eds., Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and the Western Santa Barbara Channel. Vol. 7. The Annelida, Part 4, Polychaeta: Flabelligeridae to Sternaspidae. Santa Barbara Museum of Natural History, California: 47 - 96" title="Family Capitellidae Grube, 1862." volumeTitle="Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and the Western Santa Barbara Channel." year="2000">Blake 2000</bibRefCitation>
;
<bibRefCitation author="Green, KD" editor="Eibye-Jacobsen, D" journalOrPublisher="Phuket Marine Biological Center Special Publication" pageId="0" pageNumber="1" pagination="249 - 344" refId="B14" refString="Green, KD, 2002. Capitellidae (Polychaeta) from the Andaman Sea. In: Eibye-Jacobsen, D, Ed., Proceedings of the International Workshop on the Polychaetes of the Andaman Sea. Phuket Marine Biological Center Special Publication 24: 249 - 344" title="Capitellidae (Polychaeta) from the Andaman Sea." volume="24" volumeTitle="Proceedings of the International Workshop on the Polychaetes of the Andaman Sea." year="2002">Green 2002</bibRefCitation>
,
<bibRefCitation author="Magalhaes, WF" journalOrPublisher="China Science Press, Beijing" pageId="0" pageNumber="1" publicationUrl="https://www.degruyter.com/view/Zoology/bp_029147-6_76" refId="B24" refString="Magalhaes, WF, Blake, JA, 2017. Capitellidae Grube, 1862. In: Westheide W, Purschke G (Eds) Handbook of Zoology Online, a Natural History of the Phyla of the Animal Kingdom-Annelida, Polychaetes. De Gruyter, Boston/Berlin. https://www.degruyter.com/view/Zoology/bp_029147-6_76" title="Capitellidae Grube, 1862. In: Westheide W, Purschke G (Eds) Handbook of Zoology Online, a Natural History of the Phyla of the Animal Kingdom-Annelida, Polychaetes. De Gruyter, Boston / Berlin." url="https://www.degruyter.com/view/Zoology/bp_029147-6_76" year="2017">
<normalizedToken originalValue="Magalhães">Magalhaes</normalizedToken>
and Blake 2017
</bibRefCitation>
). For instance, among the 44 examined specimens of
<taxonomicName lsidName="N. angelicae" pageId="0" pageNumber="1" rank="species" species="angelicae">
<emphasis italics="true" pageId="0" pageNumber="1">N. angelicae</emphasis>
</taxonomicName>
,
<bibRefCitation author="Hernandez-Alcantara, P" journalOrPublisher="Proceedings of the Biological Society of Washington" pageId="0" pageNumber="1" pagination="708 - 719" refId="B17" refString="Hernandez-Alcantara, P, Solis-Weiss, V, 1998. Capitellids (Polychaeta: Capitellidae) from the continental shelf of the Gulf of California, with the description of a new species, Notomastus angelicae. Proceedings of the Biological Society of Washington 111: 708 - 719" title="Capitellids (Polychaeta: Capitellidae) from the continental shelf of the Gulf of California, with the description of a new species, Notomastus angelicae." volume="111" year="1998">
<normalizedToken originalValue="Hernández-Alcántara">Hernandez-Alcantara</normalizedToken>
and
<normalizedToken originalValue="Solís-Weiss">Solis-Weiss</normalizedToken>
(1998)
</bibRefCitation>
found that 43 specimens possessed only hooks in the neuropodium of chaetiger 11. Nevertheless, less efforts have been devoted to detecting whether this character change during the development of the specimens. In this study,
<taxonomicName authorityName="Lin &amp; García-Garza &amp; Lyu &amp; Wang" authorityYear="2020" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus sunae" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="sunae">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus sunae</emphasis>
</taxonomicName>
sp. nov. specimens were collected from the identical site (sta. QPW1-4) in different months (January, April, July, September, and October). All the 61 specimens uniformly have the last thoracic chaetiger (chaetiger 11) transitional with notopodial capillaries and neuropodial hooded hooks, regardless of body size. Additional specimens from other localities also confirm the similar chaetal structure of chaetiger 11 to the type material. These indicate the stability of this character and that it could be used as an identification tool at the species level.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<taxonomicName authorityName="Lin &amp; García-Garza &amp; Lyu &amp; Wang" authorityYear="2020" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus sunae" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="sunae">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus sunae</emphasis>
</taxonomicName>
sp. nov. is readily distinguished from most congeners by the presence of neuropodial hooks in last thoracic chaetiger. Among the known
<taxonomicName authorityName="Sars" authorityYear="1851" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus" pageId="0" pageNumber="1" phylum="Annelida" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus</emphasis>
</taxonomicName>
species with neuropodial hooks in chaetiger 11,
<taxonomicName lsidName="N. sunae" pageId="0" pageNumber="1" rank="species" species="sunae">
<emphasis italics="true" pageId="0" pageNumber="1">N. sunae</emphasis>
</taxonomicName>
sp. nov. closely resembles
<taxonomicName lsidName="N. mossambicus" pageId="0" pageNumber="1" rank="species" species="mossambicus">
<emphasis italics="true" pageId="0" pageNumber="1">N. mossambicus</emphasis>
</taxonomicName>
by the presence of uniramous chaetiger 1 and prostomial eyespots, but differs from the latter in that the new species has prostomial palpode and slightly areolated epithelium in anterior thorax, whereas
<taxonomicName lsidName="N. mossambicus" pageId="0" pageNumber="1" rank="species" species="mossambicus">
<emphasis italics="true" pageId="0" pageNumber="1">N. mossambicus</emphasis>
</taxonomicName>
has prostomium without palpode and strongly areolated epithelium in anterior thorax as stated by
<bibRefCitation author="Thomassin, BA" journalOrPublisher="Invertebrate Systematics" pageId="0" pageNumber="1" refId="B30" refString="Thomassin, BA, 1970. Contribution a l'etude des polychetes de la region de Tulear (S.W. de Madagascar) II. quelques Aphroditidae des sables coralliens. Recueil des Travaux de la Station Marine d'Endoume 10 (Supplement): 47-69." title="Contribution a l'etude des polychetes de la region de Tulear (S. W. de Madagascar) II. quelques Aphroditidae des sables coralliens. Recueil des Travaux de la Station Marine d'Endoume 10 (Supplement): 47 - 69." year="1970">Thomassin (1970)</bibRefCitation>
and
<bibRefCitation author="Cinar, ME" journalOrPublisher="Cahiers De Biologie Marine" pageId="0" pageNumber="1" pagination="143 - 159" refId="B3" refString="Cinar, ME, 2005. Polychaetes from the coast of northern Cyprus (eastern Mediterranean Sea. Cahiers De Biologie Marine 46 (2): 143 - 159" title="Polychaetes from the coast of northern Cyprus (eastern Mediterranean Sea." volume="46" year="2005">Cinar (2005)</bibRefCitation>
. The new species differs from the geographically close Korean species
<taxonomicName authorityName="Jeong, Soh, Wi &amp; Suh" authorityYear="2018" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus koreanus" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="koreanus">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus koreanus</emphasis>
</taxonomicName>
described by
<bibRefCitation DOI="https://doi.org/10.3897/zookeys.754.23655" author="Jeong, M-K" journalOrPublisher="ZooKeys" pageId="0" pageNumber="1" pagination="141 - 155" refId="B18" refString="Jeong, M-K, Soh, HY, Wi, JH, Suh, H-L, 2018. A new Notomastus (Annelida, Capitellidae) species from Korean waters, with genetic comparison based on three gene markers. ZooKeys 754: 141 - 155, DOI: https://doi.org/10.3897/zookeys.754.23655" title="A new Notomastus (Annelida, Capitellidae) species from Korean waters, with genetic comparison based on three gene markers." url="https://doi.org/10.3897/zookeys.754.23655" volume="754" year="2018">Jeong et al. (2018)</bibRefCitation>
in that the new species bears eyespots on prostomium, reduced parapodial lobes in anterior abdomen, as well as neuropodial hooks in the last thoracic chaetiger. In terms of the MGSP,
<taxonomicName lsidName="N. sunae" pageId="0" pageNumber="1" rank="species" species="sunae">
<emphasis italics="true" pageId="0" pageNumber="1">N. sunae</emphasis>
</taxonomicName>
sp. nov. has paired stripes of ventral stain, the feature shared by
<taxonomicName lsidName="N. hemipodus" pageId="0" pageNumber="1" rank="species" species="hemipodus">
<emphasis italics="true" pageId="0" pageNumber="1">N. hemipodus</emphasis>
</taxonomicName>
and
<taxonomicName lsidName="N. koreanus" pageId="0" pageNumber="1" rank="species" species="koreanus">
<emphasis italics="true" pageId="0" pageNumber="1">N. koreanus</emphasis>
</taxonomicName>
. However,
<taxonomicName lsidName="N. sunae" pageId="0" pageNumber="1" rank="species" species="sunae">
<emphasis italics="true" pageId="0" pageNumber="1">N. sunae</emphasis>
</taxonomicName>
sp. nov. has very dark blue stain on abdominal dorsum and extending dorsolaterally, which is distinct from other
<taxonomicName authorityName="Sars" authorityYear="1851" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus" pageId="0" pageNumber="1" phylum="Annelida" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus</emphasis>
</taxonomicName>
species.
</paragraph>
<paragraph pageId="0" pageNumber="1">
Based on morphological description and illustration provided by
<bibRefCitation author="Green, KD" editor="Eibye-Jacobsen, D" journalOrPublisher="Phuket Marine Biological Center Special Publication" pageId="0" pageNumber="1" pagination="249 - 344" refId="B14" refString="Green, KD, 2002. Capitellidae (Polychaeta) from the Andaman Sea. In: Eibye-Jacobsen, D, Ed., Proceedings of the International Workshop on the Polychaetes of the Andaman Sea. Phuket Marine Biological Center Special Publication 24: 249 - 344" title="Capitellidae (Polychaeta) from the Andaman Sea." volume="24" volumeTitle="Proceedings of the International Workshop on the Polychaetes of the Andaman Sea." year="2002">Green (2002)</bibRefCitation>
, a
<taxonomicName authorityName="Sars" authorityYear="1851" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus" pageId="0" pageNumber="1" phylum="Annelida" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus</emphasis>
</taxonomicName>
species (labelled as
<taxonomicName lsidName="N. hemipodus" pageId="0" pageNumber="1" rank="species" species="hemipodus">N. near hemipodus</taxonomicName>
) reported from Andaman Sea is closely similar to
<taxonomicName lsidName="N. sunae" pageId="0" pageNumber="1" rank="species" species="sunae">
<emphasis italics="true" pageId="0" pageNumber="1">N. sunae</emphasis>
</taxonomicName>
sp. nov. in a number of characters: presence of palpode and eyespots on prostomium, uniramous chaetiger 1, slightly areolated epithelium on anterior 4-5 chaetigers, and the MGSP on abdomen which has very dark blue stain on dorsum and paired stripes of ventral stain.
<bibRefCitation author="Green, KD" editor="Eibye-Jacobsen, D" journalOrPublisher="Phuket Marine Biological Center Special Publication" pageId="0" pageNumber="1" pagination="249 - 344" refId="B14" refString="Green, KD, 2002. Capitellidae (Polychaeta) from the Andaman Sea. In: Eibye-Jacobsen, D, Ed., Proceedings of the International Workshop on the Polychaetes of the Andaman Sea. Phuket Marine Biological Center Special Publication 24: 249 - 344" title="Capitellidae (Polychaeta) from the Andaman Sea." volume="24" volumeTitle="Proceedings of the International Workshop on the Polychaetes of the Andaman Sea." year="2002">Green (2002)</bibRefCitation>
mentioned that some specimens had chaetiger 11 transitional with notopodial capillaries and neuropodial hooks, which also agreed with
<taxonomicName lsidName="N. sunae" pageId="0" pageNumber="1" rank="species" species="sunae">
<emphasis italics="true" pageId="0" pageNumber="1">N. sunae</emphasis>
</taxonomicName>
sp. nov. As the specimens examined by
<bibRefCitation author="Green, KD" editor="Eibye-Jacobsen, D" journalOrPublisher="Phuket Marine Biological Center Special Publication" pageId="0" pageNumber="1" pagination="249 - 344" refId="B14" refString="Green, KD, 2002. Capitellidae (Polychaeta) from the Andaman Sea. In: Eibye-Jacobsen, D, Ed., Proceedings of the International Workshop on the Polychaetes of the Andaman Sea. Phuket Marine Biological Center Special Publication 24: 249 - 344" title="Capitellidae (Polychaeta) from the Andaman Sea." volume="24" volumeTitle="Proceedings of the International Workshop on the Polychaetes of the Andaman Sea." year="2002">Green (2002)</bibRefCitation>
only had anterior fragments (23-37 chaetigers) and lacked ultrastructure of hooded hooks and gene sequences, further comparison is hindered. According to the redescription of
<taxonomicName lsidName="N. hemipodus" pageId="0" pageNumber="1" rank="species" species="hemipodus">
<emphasis italics="true" pageId="0" pageNumber="1">N. hemipodus</emphasis>
</taxonomicName>
by
<bibRefCitation DOI="https://doi.org/10.2988/11-28.1" author="Garcia-Garza, ME" journalOrPublisher="Proceedings of the Biological Society of Washington" pageId="0" pageNumber="1" pagination="1 - 11" refId="B12" refString="Garcia-Garza, ME, Harris, LH, de Leon-Gonzalez, JA, 2012. Redescription of Notomastus hemipodus Hartman 1945 and N. tenuis Moore, 1909 (Polychaeta: Capitellidae). Proceedings of the Biological Society of Washington 125 (1): 1 - 11, DOI: https://doi.org/10.2988/11-28.1" title="Redescription of Notomastus hemipodus Hartman 1945 and N. tenuis Moore, 1909 (Polychaeta: Capitellidae)." url="https://doi.org/10.2988/11-28.1" volume="125" year="2012">
<normalizedToken originalValue="García-Garza">Garcia-Garza</normalizedToken>
et al. (2012)
</bibRefCitation>
, the specimens identified as
<taxonomicName lsidName="N. hemipodus" pageId="0" pageNumber="1" rank="species" species="hemipodus">N. near hemipodus</taxonomicName>
could not belong to
<taxonomicName lsidName="N. hemipodus" pageId="0" pageNumber="1" rank="species" species="hemipodus">
<emphasis italics="true" pageId="0" pageNumber="1">N. hemipodus</emphasis>
</taxonomicName>
in that: 1) they had slightly areolated epithelium on anterior thorax instead of strongly tessellated epithelium as in
<taxonomicName lsidName="N. hemipodus" pageId="0" pageNumber="1" rank="species" species="hemipodus">
<emphasis italics="true" pageId="0" pageNumber="1">N. hemipodus</emphasis>
</taxonomicName>
; 2) they had reduced neuropodial lobes in the anterior abdomen instead of expanded neuropodial lobes as in
<taxonomicName lsidName="N. hemipodus" pageId="0" pageNumber="1" rank="species" species="hemipodus">
<emphasis italics="true" pageId="0" pageNumber="1">N. hemipodus</emphasis>
</taxonomicName>
; 3) they had very dark blue stain on abdominal dorsum instead of moderate green stain as in
<taxonomicName lsidName="N. hemipodus" pageId="0" pageNumber="1" rank="species" species="hemipodus">
<emphasis italics="true" pageId="0" pageNumber="1">N. hemipodus</emphasis>
</taxonomicName>
.
</paragraph>
<paragraph pageId="0" pageNumber="1">
<taxonomicName authorityName="Lin &amp; García-Garza &amp; Lyu &amp; Wang" authorityYear="2020" class="Polychaeta" family="Capitellidae" genus="Notomastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Notomastus sunae" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="sunae">
<emphasis italics="true" pageId="0" pageNumber="1">Notomastus sunae</emphasis>
</taxonomicName>
sp. nov. is commonly collected and abundant in Xiamen Bay, Fujian Province, widely distributed westward to Qinzhou Bay, Guangxi Province, and southward to western Hainan Island, based on the examined material obtained from several localities along southern China. Its specimens are found in great geographical ranges at latitude from 19.5N to 25.5N and at longitude from 108.8E to 119.5E. They prefer to inhabit soft sediments, like mud or muddy sand. So far, this species is found in shallow coastal waters less than 30 m deep.
</paragraph>
</subSubSection>
</treatment>
</document>