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<document id="FE5BB12B73AE2E7C62D2E5F241B94EAE" ID-CLB-Dataset="31078" ID-DOI="10.11646/zootaxa.4369.2.3" ID-GBIF-Dataset="cf7bc2b0-c94e-4788-a495-7fc270a17161" ID-ISSN="1175-5326" ID-Zenodo-Dep="1135678" ID-ZooBank="172F11D3-CFA0-4EBB-BDA4-DE58E3316A53" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1515147899373" checkinUser="plazi" docAuthor="Langeneck, Joachim, Musco, Luigi, Busoni, Giulio, Conese, Ilaria, Aliani, Stefano &amp; Castelli, Alberto" docDate="2018" docId="DA16E652A77BFFC9FF3BF8C9FDA7F82E" docLanguage="en" docName="zootaxa.4369.2.3.pdf" docOrigin="Zootaxa 4369 (2)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Exogone sophiae Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli 2018, n. sp." docType="treatment" docVersion="11" lastPageNumber="204" masterDocId="262F9E2AA77EFFCEFFACFFA3FFECFFC1" masterDocTitle="Syllidae (Annelida: Phyllodocida) from the deep Mediterranean Sea, with the description of three new species" masterLastPageNumber="220" masterPageNumber="197" pageNumber="202" updateTime="1698512346532" updateUser="ExternalLinkService">
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<mods:title id="0CC8F515B5AF3E835CB887B1BE62695D">Syllidae (Annelida: Phyllodocida) from the deep Mediterranean Sea, with the description of three new species</mods:title>
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<mods:namePart id="77FB08B38E782A258278CA03317BF900">Langeneck, Joachim</mods:namePart>
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<mods:namePart id="FAC297834CF7AEE91BCBD9EE6D07C544">Musco, Luigi</mods:namePart>
</mods:name>
<mods:name id="752C6CE13ED9B921E0DDF336A82088AD" type="personal">
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<mods:namePart id="0221BF2D673F14A9F98460E3D8DC5E60">Busoni, Giulio</mods:namePart>
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<mods:namePart id="5FB2074F123B175F64E97BD47ABE4283">Conese, Ilaria</mods:namePart>
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<mods:namePart id="B253ADD8D3730F5929072BB3A9BF1729">Aliani, Stefano</mods:namePart>
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<mods:namePart id="6BD1CC7377BF1A6B08F52EFD7690F36C">Castelli, Alberto</mods:namePart>
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<mods:typeOfResource id="36337432FB1F0DB6F59C74371530BE87">text</mods:typeOfResource>
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<mods:title id="F38CD6DFEF05C6202322C43248E13B55">Zootaxa</mods:title>
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<mods:part id="93151355448DFA34F49BB8557B834753">
<mods:date id="245A02D2925E744CFC8214CC13C92735">2018</mods:date>
<mods:detail id="712D6D9BD0F7B89E9939CFDC97FC097A" type="pubDate">
<mods:number id="6629F25B8CEFBAEFC19CD55C31BC8C32">2018-01-04</mods:number>
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<mods:number id="55350C6ECE17AD2BD5B1E4EDB2A62219">4369</mods:number>
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<mods:classification id="D1DB6426C59CB26B6A8F5178BAFEDD2A">journal article</mods:classification>
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<mods:identifier id="D006920CF93DDE4CF3715AA760E06D69" type="DOI">10.11646/zootaxa.4369.2.3</mods:identifier>
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<treatment id="DA16E652A77BFFC9FF3BF8C9FDA7F82E" ID-DOI="http://doi.org/10.5281/zenodo.5492495" ID-GBIF-Taxon="139582283" ID-Zenodo-Dep="5492495" LSID="urn:lsid:plazi:treatment:DA16E652A77BFFC9FF3BF8C9FDA7F82E" httpUri="http://treatment.plazi.org/id/DA16E652A77BFFC9FF3BF8C9FDA7F82E" lastPageId="7" lastPageNumber="204" pageId="5" pageNumber="202">
<subSubSection id="1AA504CFA77BFFCBFF3BF8C9FEC2F867" pageId="5" pageNumber="202" type="nomenclature">
<paragraph id="52005744A77BFFCBFF3BF8C9FCCBF844" blockId="5.[151,807,1898,1958]" box="[151,807,1898,1925]" pageId="5" pageNumber="202">
<heading id="0948E028A77BFFCBFF3BF8C9FCCBF844" bold="true" box="[151,807,1898,1925]" fontSize="11" level="1" pageId="5" pageNumber="202" reason="1">
<emphasis id="60CB8B56A77BFFCBFF3BF8C9FCCBF844" bold="true" box="[151,807,1898,1925]" pageId="5" pageNumber="202">
<taxonomicName id="95BF2CC7A77BFFCBFF3BF8C9FD31F844" ID-CoL="3DNG6" authority="Langeneck, Musco &amp; Castelli" authorityName="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli" authorityYear="2018" box="[151,733,1898,1925]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="5" pageNumber="202" phylum="Annelida" rank="species" species="sophiae" status="sp. nov.">
<emphasis id="60CB8B56A77BFFCBFF3BF8C9FE8BF845" bold="true" box="[151,359,1898,1924]" italics="true" pageId="5" pageNumber="202">Exogone sophiae</emphasis>
Langeneck, Musco &amp; Castelli
</taxonomicName>
<taxonomicNameLabel id="7BF8362DA77BFFCBFD49F8C8FCCBF844" box="[741,807,1899,1925]" pageId="5" pageNumber="202" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph id="52005744A77BFFCBFF3BF82EFEC2F867" blockId="5.[151,807,1898,1958]" box="[151,302,1933,1958]" pageId="5" pageNumber="202">
(
<figureCitation id="CA844BC1A77BFFCBFF32F82EFECBF867" box="[158,295,1933,1958]" captionStart-0="FIGURE 3" captionStart-1="FIGURE 4" captionStartId-0="6.[151,250,1926,1948]" captionStartId-1="7.[151,250,1018,1040]" captionTargetBox-0="[172,1393,858,1879]" captionTargetBox-1="[151,1435,193,997]" captionTargetId-0="figure@6.[150,1437,841,1905]" captionTargetId-1="figure@7.[151,1435,193,997]" captionTargetPageId-0="6" captionTargetPageId-1="7" captionText-0="FIGURE 3. Exogone sophiae n. sp. Paratype (MSNP: P/0242/V) a) anterior end indorsal view. Holotype (MSNP:P/3879): b) pygidium in dorsal view; c) spiniger-like chaeta from chaetiger 5; d) compound falciger chaetae from chaetiger 5; e) dorsal simple chaeta.Scale-bar: a‒b: 0.20 mm; c‒d‒e: 7 µm." captionText-1="FIGURE 4. Exogone sophiae n. sp. Paratype (MSNP: P/001/SEM) a) Prostomium in dorsal view, showing the absence of antennae; b) anterior end in ventral view; c) anterior parapodia in ventral view; d) spiniger-like chaeta from chaetiger 2; e) falciger-like chaetae from chaetiger 2." httpUri-0="https://zenodo.org/record/1135684/files/figure.png" httpUri-1="https://zenodo.org/record/1135686/files/figure.png" pageId="5" pageNumber="202">Figures 3–4</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="1AA504CFA77BFFC8FF3BF876FEFCFF14" lastPageId="6" lastPageNumber="203" pageId="5" pageNumber="202" type="materials_examined">
<paragraph id="52005744A77BFFC8FF3BF876FEFCFF14" blockId="5.[151,1436,2005,2030]" lastBlockId="6.[151,1437,151,789]" lastPageId="6" lastPageNumber="203" pageId="5" pageNumber="202">
<emphasis id="60CB8B56A77BFFCBFF3BF876FE6AF82F" bold="true" box="[151,390,2005,2030]" pageId="5" pageNumber="202">Material examined.</emphasis>
<typeStatus id="8D04E9E6A77BFFCBFE3FF876FE17F82F" box="[403,507,2005,2030]" pageId="5" pageNumber="202" type="holotype">Holotype</typeStatus>
(
<collectionCode id="34AECF81A77BFFCBFDA3F875FD8DF82F" box="[527,609,2006,2030]" country="Italy" httpUri="http://grbio.org/cool/epb5-mbff" name="Museo di Scienze Naturali" pageId="5" pageNumber="202">MSNP</collectionCode>
: P/3879): St. 8,
<collectingRegion id="907B99A6A77BFFCBFC87F876FC7CF82F" box="[811,912,2005,2030]" country="Israel" name="Northern" pageId="5" pageNumber="202">Northern</collectingRegion>
Tyrrhenian Sea,
<specimenCount id="44B99CCDA77BFFCBFBCCF875FB5FF82C" box="[1120,1203,2006,2030]" pageId="5" pageNumber="202" type="generic">
<quantity id="9547FAA1A77BFFCBFBCCF875FB43F82C" box="[1120,1199,2006,2030]" metricMagnitude="2" metricUnit="m" metricValue="1.1" pageId="5" pageNumber="202" unit="m" value="110.0">110 m</quantity>
.
</specimenCount>
<typeStatus id="8D04E9E6A77BFFCBFB13F875FADDF82F" box="[1215,1329,2006,2030]" pageId="5" pageNumber="202" type="paratype">Paratypes</typeStatus>
: St. 8: 1 individual (
<collectionCode id="34AECF81A778FFC8FEB6FF3BFE80FF71" box="[282,364,152,176]" country="Italy" httpUri="http://grbio.org/cool/epb5-mbff" name="Museo di Scienze Naturali" pageId="6" pageNumber="203">MSNP</collectionCode>
: P/001/SEM); St. 10: 2 individuals (
<collectionCode id="34AECF81A778FFC8FCBFFF3BFC89FF71" box="[787,869,152,176]" country="Italy" httpUri="http://grbio.org/cool/epb5-mbff" name="Museo di Scienze Naturali" pageId="6" pageNumber="203">MSNP</collectionCode>
: P/242/V; P/246/V). Additional material: St. 8: 1 individual.
</paragraph>
</subSubSection>
<subSubSection id="1AA504CFA778FFC8FF6BFF7CFE87FCD4" pageId="6" pageNumber="203" type="description">
<paragraph id="52005744A778FFC8FF6BFF7CFE87FCD4" blockId="6.[151,1437,151,789]" pageId="6" pageNumber="203">
<emphasis id="60CB8B56A778FFC8FF6BFF7CFEB5FF39" bold="true" box="[199,345,223,248]" pageId="6" pageNumber="203">Description.</emphasis>
<typeStatus id="8D04E9E6A778FFC8FEC9FF7CFE21FF39" box="[357,461,223,248]" pageId="6" pageNumber="203" type="holotype">Holotype</typeStatus>
complete specimen,
<quantity id="9547FAA1A778FFC8FD61FF7CFCF8FF36" box="[717,788,223,248]" metricMagnitude="-3" metricUnit="m" metricValue="6.0" pageId="6" pageNumber="203" unit="mm" value="6.0">6 mm</quantity>
long for 47 chaetigers,
<quantity id="9547FAA1A778FFC8FB91FF43FB44FF36" box="[1085,1192,224,248]" metricMagnitude="-4" metricUnit="m" metricValue="3.0" pageId="6" pageNumber="203" unit="mm" value="0.3">0.30 mm</quantity>
wide. All
<typeStatus id="8D04E9E6A778FFC8FA9DFF43FA71FF39" box="[1329,1437,224,248]" pageId="6" pageNumber="203" type="paratype">paratypes</typeStatus>
incomplete. Prostomium short, rectangular, distinctly broader than long, with four rounded, small eyes in trapezoidal arrangement, reddish, sometimes difficult to distinguish in preserved material. Antennae absent in all examined individuals (
<figureCitation id="CA844BC1A778FFC8FE35FEEFFE00FEA5" box="[409,492,332,357]" captionStart="FIGURE 4" captionStartId="7.[151,250,1018,1040]" captionTargetBox="[151,1435,193,997]" captionTargetId="figure@7.[151,1435,193,997]" captionTargetPageId="7" captionText="FIGURE 4. Exogone sophiae n. sp. Paratype (MSNP: P/001/SEM) a) Prostomium in dorsal view, showing the absence of antennae; b) anterior end in ventral view; c) anterior parapodia in ventral view; d) spiniger-like chaeta from chaetiger 2; e) falciger-like chaetae from chaetiger 2." httpUri="https://zenodo.org/record/1135686/files/figure.png" pageId="6" pageNumber="203">Fig. 4a</figureCitation>
). Palps long, broad, fused for their total length, with barely noticeable distal notch. Dorsal cirri very small, oval, slightly longer in the posterior region, lacking at chaetiger 2 (
<figureCitation id="CA844BC1A778FFC8FB6FFECCFAF4FE49" box="[1219,1304,367,392]" captionStart="FIGURE 3" captionStartId="6.[151,250,1926,1948]" captionTargetBox="[172,1393,858,1879]" captionTargetId="figure@6.[150,1437,841,1905]" captionTargetPageId="6" captionText="FIGURE 3. Exogone sophiae n. sp. Paratype (MSNP: P/0242/V) a) anterior end indorsal view. Holotype (MSNP:P/3879): b) pygidium in dorsal view; c) spiniger-like chaeta from chaetiger 5; d) compound falciger chaetae from chaetiger 5; e) dorsal simple chaeta.Scale-bar: a‒b: 0.20 mm; c‒d‒e: 7 µm." httpUri="https://zenodo.org/record/1135684/files/figure.png" pageId="6" pageNumber="203">Fig. 3a</figureCitation>
). First four parapodia with 2 compound spiniger-like chaetae and 3–4 falcigers, after chaetiger 5 only 1 spiniger-like and 3 falcigers (
<figureCitation id="CA844BC1A778FFC8FEA4FE14FEB7FE11" box="[264,347,439,464]" captionStart="FIGURE 4" captionStartId="7.[151,250,1018,1040]" captionTargetBox="[151,1435,193,997]" captionTargetId="figure@7.[151,1435,193,997]" captionTargetPageId="7" captionText="FIGURE 4. Exogone sophiae n. sp. Paratype (MSNP: P/001/SEM) a) Prostomium in dorsal view, showing the absence of antennae; b) anterior end in ventral view; c) anterior parapodia in ventral view; d) spiniger-like chaeta from chaetiger 2; e) falciger-like chaetae from chaetiger 2." httpUri="https://zenodo.org/record/1135686/files/figure.png" pageId="6" pageNumber="203">Fig. 4c</figureCitation>
). Anterior spiniger-like compound chaetae with thick, distally spinulous shaft (
<figureCitation id="CA844BC1A778FFC8FB70FE14FADEFE11" box="[1244,1330,439,464]" captionStart="FIGURE 3" captionStartId="6.[151,250,1926,1948]" captionTargetBox="[172,1393,858,1879]" captionTargetId="figure@6.[150,1437,841,1905]" captionTargetPageId="6" captionText="FIGURE 3. Exogone sophiae n. sp. Paratype (MSNP: P/0242/V) a) anterior end indorsal view. Holotype (MSNP:P/3879): b) pygidium in dorsal view; c) spiniger-like chaeta from chaetiger 5; d) compound falciger chaetae from chaetiger 5; e) dorsal simple chaeta.Scale-bar: a‒b: 0.20 mm; c‒d‒e: 7 µm." httpUri="https://zenodo.org/record/1135684/files/figure.png" pageId="6" pageNumber="203">Figs 3c</figureCitation>
,
<figureCitation id="CA844BC1A778FFC8FA93FE14FAB3FE11" box="[1343,1375,439,464]" captionStart="FIGURE 4" captionStartId="7.[151,250,1018,1040]" captionTargetBox="[151,1435,193,997]" captionTargetId="figure@7.[151,1435,193,997]" captionTargetPageId="7" captionText="FIGURE 4. Exogone sophiae n. sp. Paratype (MSNP: P/001/SEM) a) Prostomium in dorsal view, showing the absence of antennae; b) anterior end in ventral view; c) anterior parapodia in ventral view; d) spiniger-like chaeta from chaetiger 2; e) falciger-like chaetae from chaetiger 2." httpUri="https://zenodo.org/record/1135686/files/figure.png" pageId="6" pageNumber="203">4d</figureCitation>
), and thin, elongated blades 25–35 µm long; blades sometimes slightly curved with several long teeth on basal part (
<figureCitation id="CA844BC1A778FFC8FAC6FE7FFF5FFDD9" captionStart="FIGURE 3" captionStartId="6.[151,250,1926,1948]" captionTargetBox="[172,1393,858,1879]" captionTargetId="figure@6.[150,1437,841,1905]" captionTargetPageId="6" captionText="FIGURE 3. Exogone sophiae n. sp. Paratype (MSNP: P/0242/V) a) anterior end indorsal view. Holotype (MSNP:P/3879): b) pygidium in dorsal view; c) spiniger-like chaeta from chaetiger 5; d) compound falciger chaetae from chaetiger 5; e) dorsal simple chaeta.Scale-bar: a‒b: 0.20 mm; c‒d‒e: 7 µm." httpUri="https://zenodo.org/record/1135684/files/figure.png" pageId="6" pageNumber="203">Figs 3c</figureCitation>
,
<figureCitation id="CA844BC1A778FFC8FF6DFE5CFF0CFDD9" box="[193,224,511,536]" captionStart="FIGURE 4" captionStartId="7.[151,250,1018,1040]" captionTargetBox="[151,1435,193,997]" captionTargetId="figure@7.[151,1435,193,997]" captionTargetPageId="7" captionText="FIGURE 4. Exogone sophiae n. sp. Paratype (MSNP: P/001/SEM) a) Prostomium in dorsal view, showing the absence of antennae; b) anterior end in ventral view; c) anterior parapodia in ventral view; d) spiniger-like chaeta from chaetiger 2; e) falciger-like chaetae from chaetiger 2." httpUri="https://zenodo.org/record/1135686/files/figure.png" pageId="6" pageNumber="203">4d</figureCitation>
), difficult to see with the light microscope. Posterior spinigers-like chaetae similar but shorter and thinner, 15–20 µm long blades. Anterior falcigers with 7.5–10 µm long blade, with very small distal tooth, massive, strong proximal tooth, and relatively short, coarse serration along ventral edge (
<figureCitation id="CA844BC1A778FFC8FC74FDE4FBDCFDA1" box="[984,1072,583,608]" captionStart="FIGURE 3" captionStartId="6.[151,250,1926,1948]" captionTargetBox="[172,1393,858,1879]" captionTargetId="figure@6.[150,1437,841,1905]" captionTargetPageId="6" captionText="FIGURE 3. Exogone sophiae n. sp. Paratype (MSNP: P/0242/V) a) anterior end indorsal view. Holotype (MSNP:P/3879): b) pygidium in dorsal view; c) spiniger-like chaeta from chaetiger 5; d) compound falciger chaetae from chaetiger 5; e) dorsal simple chaeta.Scale-bar: a‒b: 0.20 mm; c‒d‒e: 7 µm." httpUri="https://zenodo.org/record/1135684/files/figure.png" pageId="6" pageNumber="203">Figs 3d</figureCitation>
,
<figureCitation id="CA844BC1A778FFC8FB92FDEBFBB0FDA1" box="[1086,1116,584,608]" captionStart="FIGURE 4" captionStartId="7.[151,250,1018,1040]" captionTargetBox="[151,1435,193,997]" captionTargetId="figure@7.[151,1435,193,997]" captionTargetPageId="7" captionText="FIGURE 4. Exogone sophiae n. sp. Paratype (MSNP: P/001/SEM) a) Prostomium in dorsal view, showing the absence of antennae; b) anterior end in ventral view; c) anterior parapodia in ventral view; d) spiniger-like chaeta from chaetiger 2; e) falciger-like chaetae from chaetiger 2." httpUri="https://zenodo.org/record/1135686/files/figure.png" pageId="6" pageNumber="203">4e</figureCitation>
). Posterior falcigers shorter, blades 3.8–5 µm long, with thicker basal part. Anterior dorsal simple chaetae unidentate, smooth; posterior dorsal simple chaetae become distinctly thicker, with a subdistal notch (
<figureCitation id="CA844BC1A778FFC8FCD5FD2CFC27FD69" box="[889,971,655,680]" captionStart="FIGURE 3" captionStartId="6.[151,250,1926,1948]" captionTargetBox="[172,1393,858,1879]" captionTargetId="figure@6.[150,1437,841,1905]" captionTargetPageId="6" captionText="FIGURE 3. Exogone sophiae n. sp. Paratype (MSNP: P/0242/V) a) anterior end indorsal view. Holotype (MSNP:P/3879): b) pygidium in dorsal view; c) spiniger-like chaeta from chaetiger 5; d) compound falciger chaetae from chaetiger 5; e) dorsal simple chaeta.Scale-bar: a‒b: 0.20 mm; c‒d‒e: 7 µm." httpUri="https://zenodo.org/record/1135684/files/figure.png" pageId="6" pageNumber="203">Fig. 3e</figureCitation>
). Ventral simple chaetae absent. Pharynx long, relatively wide, extending through six chaetigers, with a large, triangular distal tooth. Proventricle barrelshaped, as long as pharynx, with 20–23 muscle cell rows. Pygidium sub-triangular with two very long, tapering anal cirri (
<figureCitation id="CA844BC1A778FFC8FEA6FD5FFEB2FCD4" box="[266,350,764,789]" captionStart="FIGURE 3" captionStartId="6.[151,250,1926,1948]" captionTargetBox="[172,1393,858,1879]" captionTargetId="figure@6.[150,1437,841,1905]" captionTargetPageId="6" captionText="FIGURE 3. Exogone sophiae n. sp. Paratype (MSNP: P/0242/V) a) anterior end indorsal view. Holotype (MSNP:P/3879): b) pygidium in dorsal view; c) spiniger-like chaeta from chaetiger 5; d) compound falciger chaetae from chaetiger 5; e) dorsal simple chaeta.Scale-bar: a‒b: 0.20 mm; c‒d‒e: 7 µm." httpUri="https://zenodo.org/record/1135684/files/figure.png" pageId="6" pageNumber="203">Fig. 3b</figureCitation>
).
</paragraph>
</subSubSection>
<caption id="06C007CCA778FFC8FF3BF825FD55F81B" httpUri="https://zenodo.org/record/1135684/files/figure.png" pageId="6" pageNumber="203" targetBox="[172,1393,858,1879]" targetPageId="6">
<paragraph id="52005744A778FFC8FF3BF825FD55F81B" blockId="6.[151,1436,1926,2010]" pageId="6" pageNumber="203">
<emphasis id="60CB8B56A778FFC8FF3BF825FEFEF85A" bold="true" box="[151,274,1926,1948]" pageId="6" pageNumber="203">FIGURE 3.</emphasis>
<taxonomicName id="95BF2CC7A778FFC8FEB5F824FE2BF85D" authority="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli, 2018" authorityName="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli" authorityYear="2018" box="[281,455,1926,1948]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="6" pageNumber="203" phylum="Annelida" rank="species" species="sophiae" status="sp. nov.">
<emphasis id="60CB8B56A778FFC8FEB5F824FE2BF85D" box="[281,455,1926,1948]" italics="true" pageId="6" pageNumber="203">Exogone sophiae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="7BF8362DA778FFC8FE61F824FDEAF85D" box="[461,518,1927,1948]" pageId="6" pageNumber="203" rank="species">
<emphasis id="60CB8B56A778FFC8FE61F824FDEAF85D" bold="true" box="[461,518,1927,1948]" pageId="6" pageNumber="203">n. sp.</emphasis>
</taxonomicNameLabel>
Paratype (MSNP: P/0242/V) a) anterior end in dorsal view. Holotype (MSNP: P/3879): b) pygidium in dorsal view; c) spiniger-like chaeta from chaetiger 5; d) compound falciger chaetae from chaetiger 5; e) dorsal simple chaeta. Scale-bar: a‒b: 0.20 mm; c‒d‒e: 7 µm.
</paragraph>
</caption>
<caption id="06C007CCA779FFC9FF3BFC59FDF4FB8C" httpUri="https://zenodo.org/record/1135686/files/figure.png" pageId="7" pageNumber="204" targetBox="[151,1435,193,997]" targetPageId="7">
<paragraph id="52005744A779FFC9FF3BFC59FDF4FB8C" blockId="7.[151,1436,1018,1101]" pageId="7" pageNumber="204">
<emphasis id="60CB8B56A779FFC9FF3BFC59FEF9FBCE" bold="true" box="[151,277,1018,1040]" pageId="7" pageNumber="204">FIGURE 4.</emphasis>
<taxonomicName id="95BF2CC7A779FFC9FEB2FC58FE23FBD1" authority="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli, 2018" authorityName="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli" authorityYear="2018" box="[286,463,1018,1040]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="sophiae" status="sp. nov.">
<emphasis id="60CB8B56A779FFC9FEB2FC58FE23FBD1" box="[286,463,1018,1040]" italics="true" pageId="7" pageNumber="204">Exogone sophiae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="7BF8362DA779FFC9FE74FC59FDFFFBCE" box="[472,531,1018,1039]" pageId="7" pageNumber="204" rank="species">
<emphasis id="60CB8B56A779FFC9FE74FC59FDFFFBCE" bold="true" box="[472,531,1018,1039]" pageId="7" pageNumber="204">n. sp.</emphasis>
</taxonomicNameLabel>
Paratype (MSNP: P/001/SEM) a) Prostomium in dorsal view, showing the absence of antennae; b) anterior end in ventral view; c) anterior parapodia in ventral view; d) spiniger-like chaeta from chaetiger 2; e) falciger-like chaetae from chaetiger 2.
</paragraph>
</caption>
<subSubSection id="1AA504CFA779FFC9FF6BFBD7FB9BFB4C" box="[199,1143,1140,1165]" pageId="7" pageNumber="204" type="etymology">
<paragraph id="52005744A779FFC9FF6BFBD7FB9BFB4C" blockId="7.[151,1436,1140,2031]" box="[199,1143,1140,1165]" pageId="7" pageNumber="204">
<emphasis id="60CB8B56A779FFC9FF6BFBD7FEA2FB4C" bold="true" box="[199,334,1140,1165]" pageId="7" pageNumber="204">Etymology.</emphasis>
This species is dedicated to Sophie Langeneck, sister of the first author.
</paragraph>
</subSubSection>
<subSubSection id="1AA504CFA779FFC9FF6BFB3BFC49FB71" box="[199,933,1176,1201]" pageId="7" pageNumber="204" type="distribution">
<paragraph id="52005744A779FFC9FF6BFB3BFC49FB71" blockId="7.[151,1436,1140,2031]" box="[199,933,1176,1201]" pageId="7" pageNumber="204">
<emphasis id="60CB8B56A779FFC9FF6BFB3BFE8CFB70" bold="true" box="[199,352,1176,1201]" pageId="7" pageNumber="204">Distribution.</emphasis>
Tyrrhenian Sea, at a depth between 100 and
<specimenCount id="44B99CCDA779FFC9FCFBFB3AFC49FB71" box="[855,933,1177,1201]" pageId="7" pageNumber="204" type="generic">
<quantity id="9547FAA1A779FFC9FCFBFB3AFC4CFB71" box="[855,928,1177,1201]" metricMagnitude="2" metricUnit="m" metricValue="1.1" pageId="7" pageNumber="204" unit="m" value="110.0">110 m</quantity>
.
</specimenCount>
</paragraph>
</subSubSection>
<subSubSection id="1AA504CFA779FFC9FF6BFB1EFDA7F82E" pageId="7" pageNumber="204" type="discussion">
<paragraph id="52005744A779FFC9FF6BFB1EFAB3F9FE" blockId="7.[151,1436,1140,2031]" pageId="7" pageNumber="204">
<emphasis id="60CB8B56A779FFC9FF6BFB1EFED7FB17" bold="true" box="[199,315,1213,1238]" pageId="7" pageNumber="204">Remarks.</emphasis>
<taxonomicName id="95BF2CC7A779FFC9FEEEFB1DFDEDFB17" authority="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli, 2018" authorityName="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli" authorityYear="2018" box="[322,513,1213,1238]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="sophiae" status="sp. nov.">
<emphasis id="60CB8B56A779FFC9FEEEFB1DFDEDFB17" box="[322,513,1213,1238]" italics="true" pageId="7" pageNumber="204">Exogone sophiae</emphasis>
</taxonomicName>
<emphasis id="60CB8B56A779FFC9FDA4FB1FFDA7FB17" bold="true" box="[520,587,1212,1238]" pageId="7" pageNumber="204">
<taxonomicNameLabel id="7BF8362DA779FFC9FDA4FB1FFDA7FB17" box="[520,587,1212,1238]" pageId="7" pageNumber="204" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
is chiefly characterised by the absence of antennae; albeit preservation may cause the loss of antennae in some syllid species, we believe that this character is not a preservation artefact, as all the sampled individuals do not show any trace of antennae, nor of scars indicating the lost of antennae. Moreover, dorsal cirri are perfectly preserved, suggesting that preservation should not have altered the soft appendages of the collected specimens. Until now two species of
<taxonomicName id="95BF2CC7A779FFC9FD0BFAECFCE5FAA7" authorityName="Orsted" authorityYear="1845" box="[679,777,1359,1382]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="genus">
<emphasis id="60CB8B56A779FFC9FD0BFAECFCE5FAA7" box="[679,777,1359,1382]" italics="true" pageId="7" pageNumber="204">Exogone</emphasis>
</taxonomicName>
without prostomial antennae have been described, namely
<taxonomicName id="95BF2CC7A779FFC9FF3BFAD0FEB4FA4B" box="[151,344,1395,1418]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="acerata">
<emphasis id="60CB8B56A779FFC9FF3BFAD0FEB4FA4B" box="[151,344,1395,1418]" italics="true" pageId="7" pageNumber="204">Exogone acerata</emphasis>
</taxonomicName>
<bibRefCitation id="362E2AB5A779FFC9FECEFAD1FD46FA4B" author="San" box="[354,682,1394,1418]" pageId="7" pageNumber="204" refString="San Martin, G. &amp; Parapar, J. (1990) Exogone acerata n. sp. (Exogoninae: Syllidae: Polychaeta), a new species without antennae from the Mediterranean Sea. Proceedings of the Biological Society of Washington, 103, 687 - 690." type="journal article" year="1990">San Martín &amp; Parapar, 1990</bibRefCitation>
, and
<taxonomicName id="95BF2CC7A779FFC9FD47FAD0FAEEFA4B" authority="(Hartman &amp; Fauchald, 1971)" authorityName="Hartman &amp; Fauchald" authorityYear="1971" baseAuthorityName="Hartman &amp; Fauchald" baseAuthorityYear="1971" box="[747,1282,1394,1419]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="oculata">
<emphasis id="60CB8B56A779FFC9FD47FAD0FC47FA4A" box="[747,939,1394,1419]" italics="true" pageId="7" pageNumber="204">Exogone oculata</emphasis>
(
<bibRefCitation id="362E2AB5A779FFC9FC10FAD1FB16FA4B" author="Hartman" box="[956,1274,1394,1419]" pageId="7" pageNumber="204" refString="Hartman, O. &amp; Fauchald, K. (1971) Deep-water benthic polychaetous annelids off New England to Bermuda and other North Atlantic Areas. Part II. Allan Hancock Monographs in Marine Biology, 6, 1 - 327." type="journal article" year="1971">Hartman &amp; Fauchald, 1971</bibRefCitation>
)
</taxonomicName>
(San Martín, 1991).
<taxonomicName id="95BF2CC7A779FFC9FF4AFA34FEB1FA6E" authorityName="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli" authorityYear="2018" box="[230,349,1430,1455]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="sophiae">
<emphasis id="60CB8B56A779FFC9FF4AFA34FEB1FA6E" box="[230,349,1430,1455]" italics="true" pageId="7" pageNumber="204">E. sophiae</emphasis>
</taxonomicName>
differs from
<taxonomicName id="95BF2CC7A779FFC9FE5DFA34FD8AFA6F" box="[497,614,1431,1454]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="acerata">
<emphasis id="60CB8B56A779FFC9FE5DFA34FD8AFA6F" box="[497,614,1431,1454]" italics="true" pageId="7" pageNumber="204">E. acerata</emphasis>
</taxonomicName>
in the absence of dorsal cirri at chaetiger 2 (present in
<taxonomicName id="95BF2CC7A779FFC9FB7CFA34FAA9FA6F" box="[1232,1349,1431,1454]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="acerata">
<emphasis id="60CB8B56A779FFC9FB7CFA34FAA9FA6F" box="[1232,1349,1431,1454]" italics="true" pageId="7" pageNumber="204">E. acerata</emphasis>
</taxonomicName>
), in the less pronounced spinulation on shafts of spiniger-like chaetae and in the longer spines on blades of spiniger-like chaetae (
<bibRefCitation id="362E2AB5A779FFC9FF51FA7CFDA0FA36" author="San" box="[253,588,1502,1527]" pageId="7" pageNumber="204" refString="San Martin, G. &amp; Parapar, J. (1990) Exogone acerata n. sp. (Exogoninae: Syllidae: Polychaeta), a new species without antennae from the Mediterranean Sea. Proceedings of the Biological Society of Washington, 103, 687 - 690." type="journal article" year="1990">San Martín &amp; Parapar, 1990</bibRefCitation>
).
<taxonomicName id="95BF2CC7A779FFC9FDCFFA7CFCCAFA36" authorityName="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli" authorityYear="2018" box="[611,806,1502,1527]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="sophiae">
<emphasis id="60CB8B56A779FFC9FDCFFA7CFCCAFA36" box="[611,806,1502,1527]" italics="true" pageId="7" pageNumber="204">Exogone sophiae</emphasis>
</taxonomicName>
appears closer to
<taxonomicName id="95BF2CC7A779FFC9FC53FA7CFB99FA36" baseAuthorityName="Hartman &amp; Fauchald" baseAuthorityYear="1971" box="[1023,1141,1502,1527]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="oculata">
<emphasis id="60CB8B56A779FFC9FC53FA7CFB99FA36" box="[1023,1141,1502,1527]" italics="true" pageId="7" pageNumber="204">E. oculata</emphasis>
</taxonomicName>
, as both species lack the dorsal cirrus at chaetiger 2, but
<taxonomicName id="95BF2CC7A779FFC9FDADF9A0FD99F9DA" baseAuthorityName="Hartman &amp; Fauchald" baseAuthorityYear="1971" box="[513,629,1538,1563]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="oculata">
<emphasis id="60CB8B56A779FFC9FDADF9A0FD99F9DA" box="[513,629,1538,1563]" italics="true" pageId="7" pageNumber="204">E. oculata</emphasis>
</taxonomicName>
lacks spiniger-like chaetae on the first four chaetigers. Moreover, both species are provided of ventral simple chaetae, that are absent in all examined individuals of the new species.
</paragraph>
<paragraph id="52005744A779FFC9FF6BF9E9FDA7F82E" blockId="7.[151,1436,1140,2031]" pageId="7" pageNumber="204">
Among Mediterranean species,
<taxonomicName id="95BF2CC7A779FFC9FD83F9E8FD4BF9A2" authorityName="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli" authorityYear="2018" box="[559,679,1610,1635]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="sophiae">
<emphasis id="60CB8B56A779FFC9FD83F9E8FD4BF9A2" box="[559,679,1610,1635]" italics="true" pageId="7" pageNumber="204">E. sophiae</emphasis>
</taxonomicName>
appears particularly close to
<taxonomicName id="95BF2CC7A779FFC9FC54F9E8FA70F9A2" authority="(Claparede, 1868)" authorityName="Claparede" authorityYear="1868" baseAuthorityName="Claparede" baseAuthorityYear="1868" box="[1016,1436,1610,1635]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="verugera">
<emphasis id="60CB8B56A779FFC9FC54F9E8FB24F9A3" box="[1016,1224,1611,1634]" italics="true" pageId="7" pageNumber="204">Exogone verugera</emphasis>
(
<bibRefCitation id="362E2AB5A779FFC9FB74F9E9FA78F9A2" author="Claparede" box="[1240,1428,1610,1635]" pageId="7" pageNumber="204" refString="Claparede, E. (1868) Les annelides chetopodes du Golfe de Naples. Memories de la Societe de Physique et d'Histoire Naturelle de Geneve, 19, 313 - 584." type="journal article" year="1868">Claparède, 1868</bibRefCitation>
)
</taxonomicName>
and
<taxonomicName id="95BF2CC7A779FFC9FF64F9CCFDD4F946" authority="(Webster, 1879)" authorityName="Webster" authorityYear="1879" baseAuthorityName="Webster" baseAuthorityYear="1879" box="[200,568,1646,1671]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="dispar">
<emphasis id="60CB8B56A779FFC9FF64F9CCFE97F946" box="[200,379,1646,1671]" italics="true" pageId="7" pageNumber="204">Exogone dispar</emphasis>
(
<bibRefCitation id="362E2AB5A779FFC9FE27F9CDFDC3F946" author="Webster" box="[395,559,1646,1671]" pageId="7" pageNumber="204" refString="Webster, H. E. (1879) The Annelida Chaetopoda of the Virginian coast. Transactions of the Albany Institute, 9, 202 - 269." type="journal article" year="1879">Webster, 1879</bibRefCitation>
)
</taxonomicName>
in size and overall body shape and number of proventricle cell rows. Apart from the absence of antennae, this species differs from
<taxonomicName id="95BF2CC7A779FFC9FCAEF930FC6AF96B" baseAuthorityName="Claparede" baseAuthorityYear="1868" box="[770,902,1683,1706]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="verugera">
<emphasis id="60CB8B56A779FFC9FCAEF930FC6AF96B" box="[770,902,1683,1706]" italics="true" pageId="7" pageNumber="204">E. verugera</emphasis>
</taxonomicName>
as
<taxonomicName id="95BF2CC7A779FFC9FC07F930FBCDF96A" authorityName="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli" authorityYear="2018" box="[939,1057,1682,1707]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="sophiae">
<emphasis id="60CB8B56A779FFC9FC07F930FBCDF96A" box="[939,1057,1682,1707]" italics="true" pageId="7" pageNumber="204">E. sophiae</emphasis>
</taxonomicName>
has smaller, non-coalescent eyes, longer blades of falciger chaetae, with a higher number of marginal teeth, and slightly shorter blades of spinigerlike chaetae with a more pronounced spinulation along the ventral edge; moreover
<taxonomicName id="95BF2CC7A779FFC9FB91F978FB5FF932" authorityName="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli" authorityYear="2018" box="[1085,1203,1754,1779]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="sophiae">
<emphasis id="60CB8B56A779FFC9FB91F978FB5FF932" box="[1085,1203,1754,1779]" italics="true" pageId="7" pageNumber="204">E. sophiae</emphasis>
</taxonomicName>
lacks ventral simple chaetae.
<taxonomicName id="95BF2CC7A779FFC9FF51F95CFE5FF8D6" baseAuthorityName="Webster" baseAuthorityYear="1879" box="[253,435,1790,1815]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="dispar">
<emphasis id="60CB8B56A779FFC9FF51F95CFE5FF8D6" box="[253,435,1790,1815]" italics="true" pageId="7" pageNumber="204">Exogone dispar</emphasis>
</taxonomicName>
has similar blades of falciger chaetae, and a more pronounced spinulation along the ventral edge of spiniger-like blades (
<bibRefCitation id="362E2AB5A779FFC9FDEFF881FCFFF8FB" author="San" box="[579,787,1826,1850]" pageId="7" pageNumber="204" refString="San Martin, G. (2003) Anelidos Poliquetos. Familia Syllidae Grube, 1850. Museo Nacional de Ciencias Naturales, CSIC, Madrid, 554 pp." type="book" year="2003">San Martín, 2003</bibRefCitation>
); however, in
<taxonomicName id="95BF2CC7A779FFC9FC10F880FBD9F8FA" authorityName="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli" authorityYear="2018" box="[956,1077,1826,1851]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="sophiae">
<emphasis id="60CB8B56A779FFC9FC10F880FBD9F8FA" box="[956,1077,1826,1851]" italics="true" pageId="7" pageNumber="204">E. sophiae</emphasis>
</taxonomicName>
such spinulation is even more pronounced (
<figureCitation id="CA844BC1A779FFC9FE9CF8E5FE65F89E" box="[304,393,1862,1887]" captionStart="FIGURE 3" captionStartId="6.[151,250,1926,1948]" captionTargetBox="[172,1393,858,1879]" captionTargetId="figure@6.[150,1437,841,1905]" captionTargetPageId="6" captionText="FIGURE 3. Exogone sophiae n. sp. Paratype (MSNP: P/0242/V) a) anterior end indorsal view. Holotype (MSNP:P/3879): b) pygidium in dorsal view; c) spiniger-like chaeta from chaetiger 5; d) compound falciger chaetae from chaetiger 5; e) dorsal simple chaeta.Scale-bar: a‒b: 0.20 mm; c‒d‒e: 7 µm." httpUri="https://zenodo.org/record/1135684/files/figure.png" pageId="7" pageNumber="204">Fig. 3d</figureCitation>
). Moreover,
<taxonomicName id="95BF2CC7A779FFC9FD8FF8E4FD63F89E" baseAuthorityName="Webster" baseAuthorityYear="1879" box="[547,655,1862,1887]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="dispar">
<emphasis id="60CB8B56A779FFC9FD8FF8E4FD63F89E" box="[547,655,1862,1887]" italics="true" pageId="7" pageNumber="204">E. dispar</emphasis>
</taxonomicName>
has dorsal cirri at the second chaetiger. Lastly,
<taxonomicName id="95BF2CC7A779FFC9FB7FF8E4FAA2F89E" authorityName="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli" authorityYear="2018" box="[1235,1358,1862,1887]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="sophiae">
<emphasis id="60CB8B56A779FFC9FB7FF8E4FAA2F89E" box="[1235,1358,1862,1887]" italics="true" pageId="7" pageNumber="204">E. sophiae</emphasis>
</taxonomicName>
might resemble
<taxonomicName id="95BF2CC7A779FFC9FEA9F8C8FE58F842" authorityName="San Martín, Ceberio &amp; Aguirrezabalaga" authorityYear="1996" box="[261,436,1898,1923]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="lopezi">
<emphasis id="60CB8B56A779FFC9FEA9F8C8FE58F842" box="[261,436,1898,1923]" italics="true" pageId="7" pageNumber="204">Exogone lopezi</emphasis>
</taxonomicName>
<bibRefCitation id="362E2AB5A779FFC9FE12F8C9FC39F842" author="San" box="[446,981,1898,1923]" pageId="7" pageNumber="204" refString="San Martin, G., Ceberio, A. &amp; Aguirrezabalaga, F. (1996) Exogone species (Polychaeta: Syllidae: Exogoninae) from the Capbreton Canyon (Bay of Biscay, NE Atlantic). Cahiers de Biologie Marine, 37, 249 - 258." type="journal article" year="1996">San Martín, Ceberio &amp; Aguirrezabalaga, 1996</bibRefCitation>
, since this last species apparently lacks ventral simple chaetae, and has very small antennae that are difficult to see. However,
<taxonomicName id="95BF2CC7A779FFC9FBF4F82CFB56F866" authorityName="San Martín, Ceberio &amp; Aguirrezabalaga" authorityYear="1996" box="[1112,1210,1934,1959]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="lopezi">
<emphasis id="60CB8B56A779FFC9FBF4F82CFB56F866" box="[1112,1210,1934,1959]" italics="true" pageId="7" pageNumber="204">E. lopezi</emphasis>
</taxonomicName>
has falciger chaetae with long, thread-like marginal teeth that outgrow the chaetal tip, whereas in
<taxonomicName id="95BF2CC7A779FFC9FBA9F810FB90F80A" authorityName="Langeneck &amp; Musco &amp; Busoni &amp; Conese &amp; Aliani &amp; Castelli" authorityYear="2018" box="[1029,1148,1970,1995]" class="Polychaeta" family="Syllidae" genus="Exogone" higherTaxonomySource="GBIF" kingdom="Animalia" order="Phyllodocida" pageId="7" pageNumber="204" phylum="Annelida" rank="species" species="sophiae">
<emphasis id="60CB8B56A779FFC9FBA9F810FB90F80A" box="[1029,1148,1970,1995]" italics="true" pageId="7" pageNumber="204">E. sophiae</emphasis>
</taxonomicName>
the marginal serration of falcigers is coarser and less developed.
</paragraph>
</subSubSection>
</treatment>
</document>
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