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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.869.34380" ID-GBIF-Dataset="0733a684-7888-4526-9449-dee89fe914f3" ID-PMC="PMC6690876" ID-Pensoft-Pub="1313-2970-869-1" ID-Pensoft-UUID="5E1D7C137E42575296C2A10148C7891D" ID-PubMed="31413658" ID-ZooBank="50D49A54A3864738AE1F393B77EC652C" ModsDocID="1313-2970-869-1" checkinTime="1565056329852" checkinUser="pensoft" docAuthor="Jeong, Man-Ki, Soh, Ho Young &amp; Suh, Hae-Lip" docDate="2019" docId="F1F81C8F06275EBB8634327E44E29C2A" docLanguage="en" docName="ZooKeys 869: 1-18" docOrigin="ZooKeys 869" docSource="http://dx.doi.org/10.3897/zookeys.869.34380" docTitle="Heteromastus gusipoensis Jeong, Soh &amp; Suh, 2019, sp. nov." docType="treatment" docUuid="0E904D4E-8DED-483D-A503-C60AFCB1671F" docUuidSource="ZooBank" docVersion="5" lastPageNumber="1" masterDocId="677FFFA5FB24FFE1FF94FF87FFFF7104" masterDocTitle="Three new species of Heteromastus (Annelida, Capitellidae) from Korean waters, with genetic evidence based on two gene markers" masterLastPageNumber="18" masterPageNumber="1" pageNumber="1" updateTime="1668167666701" updateUser="ExternalLinkService">
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<taxonomicName LSID="f1f81c8f-0627-5ebb-8634-327e44e29c2a" class="Polychaeta" family="Capitellidae" genus="Heteromastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Heteromastus gusipoensis" order="Annelida" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="gusipoensis">Heteromastus gusipoensis</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="1">sp. nov.</taxonomicNameLabel>
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">
<treatment id="F1F81C8F06275EBB8634327E44E29C2A" ID-GBIF-Taxon="158995533" LSID="urn:lsid:zoobank.org:act:0E904D4E-8DED-483D-A503-C60AFCB1671F" httpUri="http://treatment.plazi.org/id/F1F81C8F06275EBB8634327E44E29C2A" lastPageNumber="1" pageId="0" pageNumber="1" scope_family="Capitellidae" scope_phylum="Annelida">
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<taxonomicName id="E19C056E54343094A4E0239771D120A6" ID-CoL="85RF3" LSID="f1f81c8f-0627-5ebb-8634-327e44e29c2a" family="Capitellidae" genus="Heteromastus" higherTaxonomySource="treatment-meta" kingdom="Animalia" lsidName="Heteromastus gusipoensis" order="Annelida" pageId="0" pageNumber="1" rank="species" species="gusipoensis">Heteromastus gusipoensis</taxonomicName>
<taxonomicNameLabel id="2952DC1EB011724FB5B54D3795D2416A" pageId="0" pageNumber="1">sp. nov.</taxonomicNameLabel>
<figureCitation id="DF4731DA9C0FE4ED4B101ED7A00B5769" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">
Figures 3
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,
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Heteromastus namhaensis sp. nov. A abdominal hooded hook in lateral view B posterior end in dorsal view (holotype, NA 00155558). Heteromastus gusipoensis sp. nov. C abdominal hooded hook in frontal view D posterior end in dorsal view (holotype, NA 00155561). Heteromastus koreanus sp. nov. E abdominal hooded hook in frontal view F posterior end in dorsal view (holotype, NA 00155565). Abbreviations: ac, anal cirrus; mf, main fang; neu, neuropod; no, notopod; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure5" httpUri="https://binary.pensoft.net/fig/322703" pageId="0" pageNumber="1">5C, D</figureCitation>
<figureCitation id="D092D7D790AA6C0DEC98FCD2D34E785C" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Heteromastus namhaensis sp. nov. A abdominal hooded hook in lateral view B posterior end in dorsal view (holotype, NA 00155558). Heteromastus gusipoensis sp. nov. C abdominal hooded hook in frontal view D posterior end in dorsal view (holotype, NA 00155561). Heteromastus koreanus sp. nov. E abdominal hooded hook in frontal view F posterior end in dorsal view (holotype, NA 00155565). Abbreviations: ac, anal cirrus; mf, main fang; neu, neuropod; no, notopod; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure5" httpUri="https://binary.pensoft.net/fig/322703" pageId="0" pageNumber="1">5C, D</figureCitation>
,
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Methylene green staining patterns of Korean three new species A anterior end of H. namhaensis sp. nov., lateral view (paratype, NA 00155560) B anterior end of H. gusipoensis sp. nov., lateral view (using additional specimens from type locality) C anterior end of H. koreanus sp. nov., lateral view (NA 00065689)." figureDoi="10.3897/zookeys.869.34380.figure6" httpUri="https://binary.pensoft.net/fig/322704" pageId="0" pageNumber="1">6B</figureCitation>
<figureCitation id="3F6A37CC899BB629FA23B33536809E80" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Methylene green staining patterns of Korean three new species A anterior end of H. namhaensis sp. nov., lateral view (paratype, NA 00155560) B anterior end of H. gusipoensis sp. nov., lateral view (using additional specimens from type locality) C anterior end of H. koreanus sp. nov., lateral view (NA 00065689)." figureDoi="10.3897/zookeys.869.34380.figure6" httpUri="https://binary.pensoft.net/fig/322704" pageId="0" pageNumber="1">6B</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="materials_examined">
<paragraph pageId="0" pageNumber="1">Material examined.</paragraph>
<paragraph pageId="0" pageNumber="1">
<emphasis bold="true" pageId="0" pageNumber="1">Holotype</emphasis>
<subSubSection id="07FD1D8340A236DC2A6295303FB014E0" pageId="0" pageNumber="1" type="materials_examined">
<paragraph id="D9F70990640F7197DC39BFF8C25CEC40" pageId="0" pageNumber="1">Material examined.</paragraph>
<paragraph id="2E2F04446836CCB74078EC6C8234E951" pageId="0" pageNumber="1">
<emphasis id="5597C83C6B432F7341D969C747D7E387" bold="true" pageId="0" pageNumber="1">Holotype</emphasis>
: MABIKNA00155561, sex uncertain, Yeonggwang,
<geoCoordinate degrees="35" direction="north" minutes="25.819" orientation="latitude" precision="1" value="35.430317">35°25.819'N</geoCoordinate>
<geoCoordinate id="F1AAE7E01CF5877749E8850B165275A1" degrees="35" direction="north" minutes="25.819" orientation="latitude" precision="1" value="35.430317">35°25.819'N</geoCoordinate>
,
<geoCoordinate degrees="126" direction="east" minutes="25.482" orientation="longitude" precision="1" value="126.4247">126°25.482'E</geoCoordinate>
<geoCoordinate id="90E2CCC459EFA837651AD836D1987E4C" degrees="126" direction="east" minutes="25.482" orientation="longitude" precision="1" value="126.4247">126°25.482'E</geoCoordinate>
, intertidal, tidal mud-flat, 1 m depth, November 2017, coll. Man-Ki Jeong.
<emphasis bold="true" pageId="0" pageNumber="1">Paratypes</emphasis>
<emphasis id="0BE3DB1E73A4CCF4E4F1E46D4B14B62C" bold="true" pageId="0" pageNumber="1">Paratypes</emphasis>
(2 specimens): MABIK NA00155562 and NA00155563, same information as holotype.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="materials_examined">
<paragraph pageId="0" pageNumber="1">Additional material examined.</paragraph>
<paragraph pageId="0" pageNumber="1">MABIK NA00155564, sex uncertain, Yeonggwang, 35°25.819'N, 126°25.482'E, intertidal, tidal mud-flat, 1 m depth, May 2015, coll. Man-Ki Jeong. Additional 16 specimens from type locality on SEM stub.</paragraph>
<subSubSection id="7F1A8E47EFE89BC2490013D564A4DA15" pageId="0" pageNumber="1" type="materials_examined">
<paragraph id="39FEA0DF58FBE46DF439C52A49B629A5" pageId="0" pageNumber="1">Additional material examined.</paragraph>
<paragraph id="456EE78699B5144DE04543BA08FE0192" pageId="0" pageNumber="1">MABIK NA00155564, sex uncertain, Yeonggwang, 35°25.819'N, 126°25.482'E, intertidal, tidal mud-flat, 1 m depth, May 2015, coll. Man-Ki Jeong. Additional 16 specimens from type locality on SEM stub.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="diagnosis">
<paragraph pageId="0" pageNumber="1">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="1">Abdominal hooks with four rows of teeth; three teeth in basal row, three in second row, four in third row, and two in superior row. Genital pores present in intersegmental furrows of between chaetigers 5-6, 6-7, 7-8, 8-9, 9-10, and 10-11. Posteriorly extended parapodial lobes absent on abdominal segments.</paragraph>
<subSubSection id="D03F80A9DB0170679A97764D318F98B3" pageId="0" pageNumber="1" type="diagnosis">
<paragraph id="36974D789E3110830849BD6EAFCC2389" pageId="0" pageNumber="1">Diagnosis.</paragraph>
<paragraph id="D085CDC14ED1076115B52D140E5E2567" pageId="0" pageNumber="1">Abdominal hooks with four rows of teeth; three teeth in basal row, three in second row, four in third row, and two in superior row. Genital pores present in intersegmental furrows of between chaetigers 5-6, 6-7, 7-8, 8-9, 9-10, and 10-11. Posteriorly extended parapodial lobes absent on abdominal segments.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="description">
<paragraph pageId="0" pageNumber="1">Description.</paragraph>
<paragraph pageId="0" pageNumber="1">Holotype entire, about 26 mm long, 0.5 mm wide for 120 chaetigers. Paratypes range from 19-24 mm in length, 0.4-0.5 mm width for 75-110 chaetigers. Body thread-like, rounded dorsally, flattened ventrally, widest in anterior thoracic chaetigers, and tapering from abdomen to pygidium. Color yellowish white in alcohol.</paragraph>
<paragraph pageId="0" pageNumber="1">
<subSubSection id="E0E4DFA235044917CADEC2AC2431A042" pageId="0" pageNumber="1" type="description">
<paragraph id="3D832431F15C20917D91788F78751421" pageId="0" pageNumber="1">Description.</paragraph>
<paragraph id="898609F9EB4245341A5457D3E5A07F36" pageId="0" pageNumber="1">Holotype entire, about 26 mm long, 0.5 mm wide for 120 chaetigers. Paratypes range from 19-24 mm in length, 0.4-0.5 mm width for 75-110 chaetigers. Body thread-like, rounded dorsally, flattened ventrally, widest in anterior thoracic chaetigers, and tapering from abdomen to pygidium. Color yellowish white in alcohol.</paragraph>
<paragraph id="1B19BE665AD7E1A7BD10E9854475CF95" pageId="0" pageNumber="1">
Prostomium short, conical, with short and blunt palpode; nuchal organs not seen, eyespots absent (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
<figureCitation id="DFD9E36569500495543EB064808042E0" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
). Everted proboscis with small hemispheric papillae (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3B</figureCitation>
<figureCitation id="D369027DDC56D295082E48925529F80C" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3B</figureCitation>
). Peristomium weakly bi-annulated and subequal in length with chaetiger 1 (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
<figureCitation id="B7324352ADB558C347351C0FD319EE22" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
).
</paragraph>
<paragraph pageId="0" pageNumber="1">
<paragraph id="B64A908F4782EC35B77525C1674FCE1D" pageId="0" pageNumber="1">
Thorax with 11 chaetigers (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
<figureCitation id="2154AD134AA98D7440D64FEAE75C1DF3" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
). Thoracic segments biannulated, with shallow intra- and intersegmental grooves (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
<figureCitation id="58F055AF33D80EA5ECEE49E9730FB86B" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
). First chaetiger biramous, with three or four bi-limbated capillaries; chaetigers 2-5 with six or seven capillaries per fascicle in both parapodia; chaetigers 6-11 with six or seven long-shafted hooded hooks per fascicle (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B, F</figureCitation>
<figureCitation id="75F6A2F90846133B93CB33E202913E1A" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B, F</figureCitation>
); thoracic hooks with indistinct node on shaft and at least 10 small teeth in three rows above the main fang (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3F</figureCitation>
<figureCitation id="D1FAC4C9F1452544C738D81F05B37FB3" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3F</figureCitation>
). Notopodia located in dorso-laterally, dorsally located in last few thoracic segments; neuropodia located in lateral positions (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
<figureCitation id="4A05E81BEF69253F4C9156C408F0078F" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
). Lateral organs present between both parapodia of all thoracic chaetigers, nearer to notopodia in chaetigers three to 11 (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3B</figureCitation>
<figureCitation id="D167A337887A165677D7342D6F956C2C" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3B</figureCitation>
). Genital pores present in intersegmental furrows between chaetigers 5-6, 6-7, 7-8, 8-9, 9-10, and 10-11; sometimes indistinct between chaetigers 5-6 (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3B</figureCitation>
<figureCitation id="D5891ACE566433A677C140512EFD0BB4" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3B</figureCitation>
).
</paragraph>
<paragraph pageId="0" pageNumber="1">
<paragraph id="F35A510E90131594378E847785702333" pageId="0" pageNumber="1">
Transition between thorax and abdomen distinguished by changes in chaetation and shape of segment (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
<figureCitation id="F2C0601CF72CCE7F12CBD7230ABEB07C" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
); abdominal segments multi-annulated, with short-shafted hooded hooks in posterior part of segment; thoracic chaetigers usually bi-annulated, with long-shafted hooded hooks in center of segment; last thoracic chaetiger usually shorter than first abdominal chaetiger (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
<figureCitation id="7A1B880FDDDD75A5554DF9F8D1DB9E85" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Fig. 3A, B</figureCitation>
).
</paragraph>
<paragraph pageId="0" pageNumber="1">
<paragraph id="E4AC3FB3198BA18BD81FFB942CF09C14" pageId="0" pageNumber="1">
Abdominal parapodial lobes well separated from each other, located in posterior end of each segment (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">
<figureCitation id="483BFB638482E592B089C1E31CF78A01" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">
Fig. 3
<normalizedToken originalValue="AC">A-C</normalizedToken>
<normalizedToken id="331A21F3BEEB91DC45F7E011BE264895" originalValue="AC">A-C</normalizedToken>
</figureCitation>
). Abdominal notopodia separated, mid-dorsal on anterior few segments, becoming dorsolateral in following abdominal region, with five or six hooded hooks per fascicle, not protruded in anterior abdominal region, and very weakly protruded above epidermis in mid-posterior abdomen; not extended over further segment (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">
<figureCitation id="6D217FC87F0F41BC0AC0AB1C0D86F6D1" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">
Figs 3
<normalizedToken originalValue="AD">A-D</normalizedToken>
<normalizedToken id="760BA53BAA3E53398C423C7A1EB0AD89" originalValue="AD">A-D</normalizedToken>
</figureCitation>
,
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Heteromastus namhaensis sp. nov. A abdominal hooded hook in lateral view B posterior end in dorsal view (holotype, NA 00155558). Heteromastus gusipoensis sp. nov. C abdominal hooded hook in frontal view D posterior end in dorsal view (holotype, NA 00155561). Heteromastus koreanus sp. nov. E abdominal hooded hook in frontal view F posterior end in dorsal view (holotype, NA 00155565). Abbreviations: ac, anal cirrus; mf, main fang; neu, neuropod; no, notopod; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure5" httpUri="https://binary.pensoft.net/fig/322703" pageId="0" pageNumber="1">5D</figureCitation>
<figureCitation id="F68BE2F79D3FD4800229D6F5888B5B05" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Heteromastus namhaensis sp. nov. A abdominal hooded hook in lateral view B posterior end in dorsal view (holotype, NA 00155558). Heteromastus gusipoensis sp. nov. C abdominal hooded hook in frontal view D posterior end in dorsal view (holotype, NA 00155561). Heteromastus koreanus sp. nov. E abdominal hooded hook in frontal view F posterior end in dorsal view (holotype, NA 00155565). Abbreviations: ac, anal cirrus; mf, main fang; neu, neuropod; no, notopod; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure5" httpUri="https://binary.pensoft.net/fig/322703" pageId="0" pageNumber="1">5D</figureCitation>
). Abdominal neuropodia separated, not protruded, with six to eight hooded hooks per fascicle; neuropodial lobes less developed than notopodial lobes (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">
<figureCitation id="25027A02EF5916D0404139608E02810D" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">
Figs 3
<normalizedToken originalValue="AC">A-C</normalizedToken>
<normalizedToken id="25B80A8FBBAEA0A66F65663C82138C97" originalValue="AC">A-C</normalizedToken>
</figureCitation>
,
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Heteromastus namhaensis sp. nov. A abdominal hooded hook in lateral view B posterior end in dorsal view (holotype, NA 00155558). Heteromastus gusipoensis sp. nov. C abdominal hooded hook in frontal view D posterior end in dorsal view (holotype, NA 00155561). Heteromastus koreanus sp. nov. E abdominal hooded hook in frontal view F posterior end in dorsal view (holotype, NA 00155565). Abbreviations: ac, anal cirrus; mf, main fang; neu, neuropod; no, notopod; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure5" httpUri="https://binary.pensoft.net/fig/322703" pageId="0" pageNumber="1">5D</figureCitation>
<figureCitation id="662EBB4AF184BD0954FE35FE2E494493" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Heteromastus namhaensis sp. nov. A abdominal hooded hook in lateral view B posterior end in dorsal view (holotype, NA 00155558). Heteromastus gusipoensis sp. nov. C abdominal hooded hook in frontal view D posterior end in dorsal view (holotype, NA 00155561). Heteromastus koreanus sp. nov. E abdominal hooded hook in frontal view F posterior end in dorsal view (holotype, NA 00155565). Abbreviations: ac, anal cirrus; mf, main fang; neu, neuropod; no, notopod; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure5" httpUri="https://binary.pensoft.net/fig/322703" pageId="0" pageNumber="1">5D</figureCitation>
).
</paragraph>
<paragraph pageId="0" pageNumber="1">
<paragraph id="60130B1F43C14DB828885AA1E0B4A300" pageId="0" pageNumber="1">
Hooded hooks with main fang extending slightly beyond hoods. Abdominal hooks with distinct node on shaft and four rows of small teeth above main fang; three teeth in basal row, three in second row, four in third row, and two in superior row (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Figs 3E, G</figureCitation>
<figureCitation id="A215E90CDA07A5FC957D755293178E7F" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Figs 3E, G</figureCitation>
,
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Heteromastus namhaensis sp. nov. A abdominal hooded hook in lateral view B posterior end in dorsal view (holotype, NA 00155558). Heteromastus gusipoensis sp. nov. C abdominal hooded hook in frontal view D posterior end in dorsal view (holotype, NA 00155561). Heteromastus koreanus sp. nov. E abdominal hooded hook in frontal view F posterior end in dorsal view (holotype, NA 00155565). Abbreviations: ac, anal cirrus; mf, main fang; neu, neuropod; no, notopod; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure5" httpUri="https://binary.pensoft.net/fig/322703" pageId="0" pageNumber="1">5C</figureCitation>
<figureCitation id="B3F5F20ABB0CD42BF90D0502BDC6AE2F" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Heteromastus namhaensis sp. nov. A abdominal hooded hook in lateral view B posterior end in dorsal view (holotype, NA 00155558). Heteromastus gusipoensis sp. nov. C abdominal hooded hook in frontal view D posterior end in dorsal view (holotype, NA 00155561). Heteromastus koreanus sp. nov. E abdominal hooded hook in frontal view F posterior end in dorsal view (holotype, NA 00155565). Abbreviations: ac, anal cirrus; mf, main fang; neu, neuropod; no, notopod; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure5" httpUri="https://binary.pensoft.net/fig/322703" pageId="0" pageNumber="1">5C</figureCitation>
). Pygidium with digitate anal cirrus (
<figureCitation captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Figs 3D</figureCitation>
<figureCitation id="276C9A39DC82F9299A18C2E1DDDEE92A" captionStart="Figure 3" captionStartId="F3" captionText="Figure 3. Heteromastus gusipoensis sp. nov. A anterior end, dorsal view (holotype, NA 00155561) B same, lateral view C posterior abdominal segments, left lateral view (holotype, NA 00155561) D posterior end, dorsal view (holotype, NA 00155561) E abdominal short-shafted hook, frontal view F thoracic long-shafted hook, lateral view G abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1">Figs 3D</figureCitation>
,
<figureCitation captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Heteromastus namhaensis sp. nov. A abdominal hooded hook in lateral view B posterior end in dorsal view (holotype, NA 00155558). Heteromastus gusipoensis sp. nov. C abdominal hooded hook in frontal view D posterior end in dorsal view (holotype, NA 00155561). Heteromastus koreanus sp. nov. E abdominal hooded hook in frontal view F posterior end in dorsal view (holotype, NA 00155565). Abbreviations: ac, anal cirrus; mf, main fang; neu, neuropod; no, notopod; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure5" httpUri="https://binary.pensoft.net/fig/322703" pageId="0" pageNumber="1">5D</figureCitation>
<figureCitation id="EDD6D0D661C4609E75139F44A7B26764" captionStart="Figure 5" captionStartId="F5" captionText="Figure 5. Heteromastus namhaensis sp. nov. A abdominal hooded hook in lateral view B posterior end in dorsal view (holotype, NA 00155558). Heteromastus gusipoensis sp. nov. C abdominal hooded hook in frontal view D posterior end in dorsal view (holotype, NA 00155561). Heteromastus koreanus sp. nov. E abdominal hooded hook in frontal view F posterior end in dorsal view (holotype, NA 00155565). Abbreviations: ac, anal cirrus; mf, main fang; neu, neuropod; no, notopod; pyg, pygidium." figureDoi="10.3897/zookeys.869.34380.figure5" httpUri="https://binary.pensoft.net/fig/322703" pageId="0" pageNumber="1">5D</figureCitation>
).
</paragraph>
<caption doi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1" start="Figure 3" startId="F3">
<paragraph pageId="0" pageNumber="1">
<caption id="0C81D95C68C1F6CE258651BE5FA634B5" doi="10.3897/zookeys.869.34380.figure3" httpUri="https://binary.pensoft.net/fig/322701" pageId="0" pageNumber="1" start="Figure 3" startId="F3">
<paragraph id="185670B1263AB0EACD272DE555E7971C" pageId="0" pageNumber="1">
Figure 3.
<taxonomicName class="Polychaeta" family="Capitellidae" genus="Heteromastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Heteromastus gusipoensis" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="gusipoensis">
<emphasis italics="true" pageId="0" pageNumber="1">Heteromastus gusipoensis</emphasis>
<taxonomicName id="0245683A205924404364DAC22013BDA7" class="Polychaeta" family="Capitellidae" genus="Heteromastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Heteromastus gusipoensis" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="gusipoensis">
<emphasis id="27406EF38B1A2602C5456B4482283490" italics="true" pageId="0" pageNumber="1">Heteromastus gusipoensis</emphasis>
</taxonomicName>
sp. nov.
<emphasis bold="true" pageId="0" pageNumber="1">A</emphasis>
<emphasis id="9B5D144F6288E1CFA851BFB4245B0CA1" bold="true" pageId="0" pageNumber="1">A</emphasis>
anterior end, dorsal view (holotype, NA00155561)
<emphasis bold="true" pageId="0" pageNumber="1">B</emphasis>
<emphasis id="44820BCD97F618089BE6EED964758D87" bold="true" pageId="0" pageNumber="1">B</emphasis>
same, lateral view
<emphasis bold="true" pageId="0" pageNumber="1">C</emphasis>
<emphasis id="887560A7F8C94081B6EFAB8223E1121E" bold="true" pageId="0" pageNumber="1">C</emphasis>
posterior abdominal segments, left lateral view (holotype, NA00155561)
<emphasis bold="true" pageId="0" pageNumber="1">D</emphasis>
<emphasis id="5ABCA77874D6BDDFEFB91825BD090718" bold="true" pageId="0" pageNumber="1">D</emphasis>
posterior end, dorsal view (holotype, NA00155561)
<emphasis bold="true" pageId="0" pageNumber="1">E</emphasis>
<emphasis id="D111875E9A5FA5D17C66215EC41EDFDC" bold="true" pageId="0" pageNumber="1">E</emphasis>
abdominal short-shafted hook, frontal view
<emphasis bold="true" pageId="0" pageNumber="1">F</emphasis>
<emphasis id="30E04958F107D10F39F7D79891B203F7" bold="true" pageId="0" pageNumber="1">F</emphasis>
thoracic long-shafted hook, lateral view
<emphasis bold="true" pageId="0" pageNumber="1">G</emphasis>
<emphasis id="9E0B3483465322781910CE27EB5A3428" bold="true" pageId="0" pageNumber="1">G</emphasis>
abdominal short-shafted hook, lateral view. Abbreviations: ac, anal cirrus; cc, capillary chaetae; Ch, chaetiger; gp, genital pore; hh, hooded hooks; lo, lateral organ; mf, main fang; neu, neuropod; no, notopod; per, peristomium; pro, prostomium; prob, proboscis; pyg, pygidium.
</paragraph>
</caption>
</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">
<subSubSection id="43F5B83C54AA16588982A0B3534D981D" pageId="0" pageNumber="1" type="methyl green staining pattern">
<paragraph id="11CEA52D6DDCEACF1D990019C810E5C8" pageId="0" pageNumber="1">Methyl green staining pattern.</paragraph>
<paragraph id="6320F6311229F25EDE32E7A3FD205360" pageId="0" pageNumber="1">
Prostomium, peristomium and thoracic chaetigers 1-2 not stained (
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Methylene green staining patterns of Korean three new species A anterior end of H. namhaensis sp. nov., lateral view (paratype, NA 00155560) B anterior end of H. gusipoensis sp. nov., lateral view (using additional specimens from type locality) C anterior end of H. koreanus sp. nov., lateral view (NA 00065689)." figureDoi="10.3897/zookeys.869.34380.figure6" httpUri="https://binary.pensoft.net/fig/322704" pageId="0" pageNumber="1">Fig. 6B</figureCitation>
<figureCitation id="F4BF1659C3E84043FCFE90A2BF05C2CA" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Methylene green staining patterns of Korean three new species A anterior end of H. namhaensis sp. nov., lateral view (paratype, NA 00155560) B anterior end of H. gusipoensis sp. nov., lateral view (using additional specimens from type locality) C anterior end of H. koreanus sp. nov., lateral view (NA 00065689)." figureDoi="10.3897/zookeys.869.34380.figure6" httpUri="https://binary.pensoft.net/fig/322704" pageId="0" pageNumber="1">Fig. 6B</figureCitation>
). Thoracic chaetigers 3-10 stained blue; blue speckles restrictively present on the median part of each segment; blue speckles sparse in chaetigers 3-4 (
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Methylene green staining patterns of Korean three new species A anterior end of H. namhaensis sp. nov., lateral view (paratype, NA 00155560) B anterior end of H. gusipoensis sp. nov., lateral view (using additional specimens from type locality) C anterior end of H. koreanus sp. nov., lateral view (NA 00065689)." figureDoi="10.3897/zookeys.869.34380.figure6" httpUri="https://binary.pensoft.net/fig/322704" pageId="0" pageNumber="1">Fig. 6B</figureCitation>
<figureCitation id="8343C7D48501F779D16F603D5B08A158" captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Methylene green staining patterns of Korean three new species A anterior end of H. namhaensis sp. nov., lateral view (paratype, NA 00155560) B anterior end of H. gusipoensis sp. nov., lateral view (using additional specimens from type locality) C anterior end of H. koreanus sp. nov., lateral view (NA 00065689)." figureDoi="10.3897/zookeys.869.34380.figure6" httpUri="https://binary.pensoft.net/fig/322704" pageId="0" pageNumber="1">Fig. 6B</figureCitation>
). Abdominal region without any distinct staining pattern; parapodial lobes of chaetigers 12-13 slightly stained in blue but rapidly fades.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="etymology">
<paragraph pageId="0" pageNumber="1">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="1">The new species is named for its limited distribution in Gusipo, Korea.</paragraph>
<subSubSection id="C8242382431FABADF4E9A97F22002591" pageId="0" pageNumber="1" type="etymology">
<paragraph id="20B763768E71652AE0A8446EAAD0B3E3" pageId="0" pageNumber="1">Etymology.</paragraph>
<paragraph id="144A354C1F31CCE3F9AFBD2AD46E11BE" pageId="0" pageNumber="1">The new species is named for its limited distribution in Gusipo, Korea.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="distribution">
<paragraph pageId="0" pageNumber="1">Distribution.</paragraph>
<paragraph pageId="0" pageNumber="1">Intertidal area (0-1 m) near Gusipo, Korea.</paragraph>
<subSubSection id="D95204405AF20AF82E973F7A1D18C2A7" pageId="0" pageNumber="1" type="distribution">
<paragraph id="3A04751EC96C4DADBA7A752EF525264A" pageId="0" pageNumber="1">Distribution.</paragraph>
<paragraph id="2307D251D3A4D1170323A28003D1A395" pageId="0" pageNumber="1">Intertidal area (0-1 m) near Gusipo, Korea.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="ecology">
<paragraph pageId="0" pageNumber="1">Ecology.</paragraph>
<paragraph pageId="0" pageNumber="1">
<taxonomicName class="Polychaeta" family="Capitellidae" genus="Heteromastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Heteromastus gusipoensis" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="gusipoensis">
<emphasis italics="true" pageId="0" pageNumber="1">Heteromastus gusipoensis</emphasis>
<subSubSection id="7F66D0CBE09D69ECA909D3D2760B177F" pageId="0" pageNumber="1" type="ecology">
<paragraph id="3ACCAEE13884A477C2073DD1E04BB869" pageId="0" pageNumber="1">Ecology.</paragraph>
<paragraph id="8300EDFC576BC8AF77DA31047C66DF2B" pageId="0" pageNumber="1">
<taxonomicName id="0736C2D362C9BCF73DB4853CEB8C93A7" class="Polychaeta" family="Capitellidae" genus="Heteromastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Heteromastus gusipoensis" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="gusipoensis">
<emphasis id="A1A32834987F5476836441B3CC6D66C4" italics="true" pageId="0" pageNumber="1">Heteromastus gusipoensis</emphasis>
</taxonomicName>
was sampled in May of 2015 (9 ind./m2) and November of 2017 (71 ind./m2). Most well-developed individuals (having over 120 segments) were obtained in November. Surface sediment of the collecting station was mainly composed of fine sand and silt. Unidentified nereidid polychaetes co-occurred in the same location. The salinity of the sampling location was about 32.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="1" type="remarks">
<paragraph pageId="0" pageNumber="1">Remarks.</paragraph>
<paragraph pageId="0" pageNumber="1">
<taxonomicName class="Polychaeta" family="Capitellidae" genus="Heteromastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Heteromastus gusipoensis" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="gusipoensis">
<emphasis italics="true" pageId="0" pageNumber="1">Heteromastus gusipoensis</emphasis>
<subSubSection id="9C90E31F8AF17C8A6D6629715A6CC832" pageId="0" pageNumber="1" type="remarks">
<paragraph id="08F4E12F542CD14AAB9307A4CF0FD421" pageId="0" pageNumber="1">Remarks.</paragraph>
<paragraph id="FE2A6D9791880BD88DDF8D2CA4D0DEA2" pageId="0" pageNumber="1">
<taxonomicName id="66814DD73E5F7DBF2D9CA4F90B501958" class="Polychaeta" family="Capitellidae" genus="Heteromastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Heteromastus gusipoensis" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="gusipoensis">
<emphasis id="D233A50B1F97B7D664C949692EAFE88A" italics="true" pageId="0" pageNumber="1">Heteromastus gusipoensis</emphasis>
</taxonomicName>
closely resembles
<taxonomicName lsidName="H. tohbaiensis" pageId="0" pageNumber="1" rank="species" species="tohbaiensis">
<emphasis italics="true" pageId="0" pageNumber="1">H. tohbaiensis</emphasis>
<taxonomicName id="6F1AF43159E1ABF4632FFF9AFA9972A5" lsidName="H. tohbaiensis" pageId="0" pageNumber="1" rank="species" species="tohbaiensis">
<emphasis id="87EDB7951C4AE313D2BDDF41DE1E4A7A" italics="true" pageId="0" pageNumber="1">H. tohbaiensis</emphasis>
</taxonomicName>
Yabe &amp; Mawatari 1998 in the chaetal arrangement and the absence of developed parapodial lobes in posterior abdomen (Table 2). However, they differ in the presence of eyespots on prostomium and distinct node on the shaft of thoracic hooks in
<taxonomicName lsidName="H. tohbaiensis" pageId="0" pageNumber="1" rank="species" species="tohbaiensis">
<emphasis italics="true" pageId="0" pageNumber="1">H. tohbaiensis</emphasis>
<taxonomicName id="4D305748068332B3F24380F7F80233BF" lsidName="H. tohbaiensis" pageId="0" pageNumber="1" rank="species" species="tohbaiensis">
<emphasis id="284AA293223C660379CB7052D6FA27F3" italics="true" pageId="0" pageNumber="1">H. tohbaiensis</emphasis>
</taxonomicName>
(Table 2;
<bibRefCitation DOI="https://doi.org/10.12782/specdiv.3.201" author="Yabe, K" journalOrPublisher="Species Diversity" pageId="0" pageNumber="1" pagination="201 - 209" refId="B29" refString="Yabe, K, Mawatari, SF, 1998. Two new species of Capitellidae (Annelida: Polychaeta) from Hokkaido, northern Japan. . Species Diversity 3: 201 - 209" title="Two new species of Capitellidae (Annelida: Polychaeta) from Hokkaido, northern Japan." url="https://doi.org/10.12782/specdiv.3.201" volume="3" year="1998">Yabe and Mawatari 1998</bibRefCitation>
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). Moreover, they occur in different habitats and geographical areas.
<taxonomicName lsidName="H. gusipoensis" pageId="0" pageNumber="1" rank="species" species="gusipoensis">
<emphasis italics="true" pageId="0" pageNumber="1">H. gusipoensis</emphasis>
<taxonomicName id="C8C719C0CFFD53A66A21ABDCEE6367E3" lsidName="H. gusipoensis" pageId="0" pageNumber="1" rank="species" species="gusipoensis">
<emphasis id="0907E1C39D860D765633A944BDC3C3C1" italics="true" pageId="0" pageNumber="1">H. gusipoensis</emphasis>
</taxonomicName>
only occurs in the marine intertidal zone (salinity ca 32) of southwestern Korea, whereas
<taxonomicName lsidName="H. tohbaiensis" pageId="0" pageNumber="1" rank="species" species="tohbaiensis">
<emphasis italics="true" pageId="0" pageNumber="1">H. tohbaiensis</emphasis>
<taxonomicName id="BF16A82CCABF8DC0BD24504A9200C28A" lsidName="H. tohbaiensis" pageId="0" pageNumber="1" rank="species" species="tohbaiensis">
<emphasis id="A6941C1296A03FE533D3AD8866D0917E" italics="true" pageId="0" pageNumber="1">H. tohbaiensis</emphasis>
</taxonomicName>
is only reported from the lacustrine habitat of northern Japan (
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).
<taxonomicName class="Polychaeta" family="Capitellidae" genus="Heteromastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Heteromastus gusipoensis" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="gusipoensis">
<emphasis italics="true" pageId="0" pageNumber="1">Heteromastus gusipoensis</emphasis>
<taxonomicName id="C51929A11FA06782489FDEE2FD630A1A" class="Polychaeta" family="Capitellidae" genus="Heteromastus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Heteromastus gusipoensis" pageId="0" pageNumber="1" phylum="Annelida" rank="species" species="gusipoensis">
<emphasis id="C5B4DB4F159BADA26B1656603C601E05" italics="true" pageId="0" pageNumber="1">Heteromastus gusipoensis</emphasis>
</taxonomicName>
is readily distinguished from the Korean former record,
<taxonomicName lsidName="H. filiformis" pageId="0" pageNumber="1" rank="species" species="filiformis">
<emphasis italics="true" pageId="0" pageNumber="1">H. filiformis</emphasis>
<taxonomicName id="DA30622B1619131CB024EF9901341A9D" lsidName="H. filiformis" pageId="0" pageNumber="1" rank="species" species="filiformis">
<emphasis id="7BDBAD2D6764D685C052FFC995FA02E8" italics="true" pageId="0" pageNumber="1">H. filiformis</emphasis>
</taxonomicName>
sensu Choi &amp; Yoon, 2016, by the absence of prostomial eyespots and expanded abdominal parapodial lobes in
<taxonomicName lsidName="H. gusipoensis" pageId="0" pageNumber="1" rank="species" species="gusipoensis">
<emphasis italics="true" pageId="0" pageNumber="1">H. gusipoensis</emphasis>
<taxonomicName id="1E5E868BDEB259354DCDD933292D1691" lsidName="H. gusipoensis" pageId="0" pageNumber="1" rank="species" species="gusipoensis">
<emphasis id="17C6096195B574A2E7FCC0D0624E8C50" italics="true" pageId="0" pageNumber="1">H. gusipoensis</emphasis>
</taxonomicName>
.
</paragraph>