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<document id="2A39A3D026E3512305ABCA77175ACE99" ID-CLB-Dataset="4125" ID-DOI="10.11646/zootaxa.5048.2.3" ID-GBIF-Dataset="78efc8a8-333c-4847-aad9-d9f7943b8da8" ID-ISSN="1175-5326" ID-Zenodo-Dep="5551975" ID-ZooBank="CBD94592-5647-4F52-A8CF-4990DE8574D8" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1633502640057" checkinUser="plazi" docAuthor="Chávez-López, Yessica" docDate="2021" docId="03D0AE235162FFD0FF73F9BAFECD12E5" docLanguage="en" docName="zootaxa.5048.2.3.pdf" docOrigin="Zootaxa 5048 (2)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Idanthyrsus mikeli Chávez-López 2021, n. sp." docType="treatment" docVersion="8" lastPageNumber="198" masterDocId="FFE9D65B5166FFD7FFE4FFC3FFA31644" masterDocTitle="Sabellariids (Annelida: Sedentaria: Sabellariidae) from shallow waters of the Gulf of Mexico and the Caribbean Sea, including three new species" masterLastPageNumber="214" masterPageNumber="191" pageNumber="195" updateTime="1699458619445" updateUser="ExternalLinkService" zenodo-license-document="CLOSED">
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<mods:title id="C631F19B865D78149496C3B012BBC723">Sabellariids (Annelida: Sedentaria: Sabellariidae) from shallow waters of the Gulf of Mexico and the Caribbean Sea, including three new species</mods:title>
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<mods:namePart id="B8E57675FC5AE8280E6D93697BC043BB">Chávez-López, Yessica</mods:namePart>
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<treatment id="03D0AE235162FFD0FF73F9BAFECD12E5" ID-DOI="http://doi.org/10.5281/zenodo.5555031" ID-GBIF-Taxon="188580751" ID-Zenodo-Dep="5555031" LSID="urn:lsid:plazi:treatment:03D0AE235162FFD0FF73F9BAFECD12E5" httpUri="http://treatment.plazi.org/id/03D0AE235162FFD0FF73F9BAFECD12E5" lastPageId="7" lastPageNumber="198" pageId="4" pageNumber="195">
<subSubSection id="C3634CBE5162FFD3FF73F9BAFE6710D0" box="[151,452,1657,1684]" pageId="4" pageNumber="195" type="nomenclature">
<paragraph id="8BC61F355162FFD3FF73F9BAFE6710D0" blockId="4.[151,452,1657,1720]" box="[151,452,1657,1684]" pageId="4" pageNumber="195">
<heading id="D08EA8595162FFD3FF73F9BAFE6710D0" bold="true" box="[151,452,1657,1684]" fontSize="11" level="1" pageId="4" pageNumber="195" reason="1">
<emphasis id="B90DC3275162FFD3FF73F9BAFE6710D0" bold="true" box="[151,452,1657,1684]" pageId="4" pageNumber="195">
<taxonomicName id="4C7964B65162FFD3FF73F9BAFED810D0" ID-CoL="8RW9Q" authority="Chávez-López, 2021" authorityName="Chávez-López" authorityYear="2021" box="[151,379,1657,1684]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="4" pageNumber="195" phylum="Annelida" rank="species" species="mikeli" status="sp. nov.">
<emphasis id="B90DC3275162FFD3FF73F9BAFED810D0" bold="true" box="[151,379,1657,1684]" italics="true" pageId="4" pageNumber="195">Idanthyrsus mikeli</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A23E7E5C5162FFD3FE66F9B9FE6710D0" box="[386,452,1658,1684]" pageId="4" pageNumber="195" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
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<subSubSection id="C3634CBE5162FFD3FF73F95DFC0F10BE" pageId="4" pageNumber="195" type="description">
<paragraph id="8BC61F355162FFD3FF73F95DFEDF10FC" blockId="4.[151,452,1657,1720]" box="[151,380,1694,1720]" pageId="4" pageNumber="195">
<figureCitation id="134203B05162FFD3FF73F95DFE9610FC" box="[151,309,1694,1720]" captionStart="FIGURE 3" captionStartId="5.[151,250,1804,1828]" captionTargetBox="[151,1435,417,1781]" captionTargetId="figure-129@5.[151,1435,417,1781]" captionTargetPageId="5" captionText="FIGURE 3. Idanthyrsus mikeli n. sp. (ECOSUR-252).A, Holotype complete specimen, lateral view. B,Anterior region, ventral view. C, Anterior region, dorsal view. D, Median ridge and median organ, ventral view. E, Parathoracic region, lateral view. F, Abdomen, ventral view. Scale bars:AC: 1 mm; DF: 0.5 mm.Abbreviations: ab8, abdominal neuropodia segment 8; bo, building organ; ca, cauda; mo, median organ; mr, median ridge; ne, parathoracic neuropodia; no, parathoracic notopodia; pa, palps; tf, tentacular filaments." figureDoi="http://doi.org/10.5281/zenodo.5551981" httpUri="https://zenodo.org/record/5551981/files/figure.png" pageId="4" pageNumber="195">Figures 3AF</figureCitation>
;
<figureCitation id="134203B05162FFD3FEA5F95DFEDF10FC" box="[321,380,1694,1720]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="4" pageNumber="195">4AJ</figureCitation>
</paragraph>
<paragraph id="8BC61F355162FFD3FF73F921FC0F10BE" blockId="4.[151,940,1762,1786]" box="[151,940,1762,1786]" pageId="4" pageNumber="195">
LSID:
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urn:lsid:zoobank.org:act:
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<subSubSection id="C3634CBE5162FFD3FF73F8EBFAF01122" pageId="4" pageNumber="195" type="materials_examined">
<paragraph id="8BC61F355162FFD3FF73F8EBFAF01122" blockId="4.[151,1436,1832,2039]" pageId="4" pageNumber="195">
<emphasis id="B90DC3275162FFD3FF73F8EBFE231106" bold="true" box="[151,384,1832,1858]" pageId="4" pageNumber="195">Material examined.</emphasis>
<materialsCitation id="3B1115685162FFD3FE63F8EAFE6E1122" ID-GBIF-Occurrence="3382008312" collectingDate="2002-02-22" collectorName="I. Linero-Arana" country="Venezuela" elevation="2" location="Cumana Turpialito" pageId="4" pageNumber="195" specimenCount="2" typeStatus="holotype">
<emphasis id="B90DC3275162FFD3FE63F8EAFDA51107" bold="true" box="[391,518,1833,1859]" pageId="4" pageNumber="195">
<collectingCountry id="F36E5FA55162FFD3FE63F8EAFDA11107" box="[391,514,1833,1859]" name="Venezuela" pageId="4" pageNumber="195">Venezuela</collectingCountry>
.
</emphasis>
<typeStatus id="54C2A1975162FFD3FDE9F8EBFDD61106" box="[525,629,1832,1858]" pageId="4" pageNumber="195" type="holotype">Holotype</typeStatus>
(ECOSUR-252),
<location id="8EA649EE5162FFD3FCDAF8EAFBB71106" LSID="urn:lsid:plazi:treatment:03D0AE235162FFD0FF73F9BAFECD12E5:8EA649EE5162FFD3FCDAF8EAFBB71106" box="[830,1044,1832,1859]" country="Venezuela" name="Cumana Turpialito" pageId="4" pageNumber="195">Cumaná Turpialito</location>
,
<collectedFrom id="38655CC85162FFD3FBFBF8EAFB111106" box="[1055,1202,1832,1859]" pageId="4" pageNumber="195">
on
<taxonomicName id="4C7964B65162FFD3FBA6F8EBFB111106" authorityName="Linnaeus" authorityYear="1758" box="[1090,1202,1832,1858]" class="Hydrozoa" family="Milleporidae" genus="Millepora" kingdom="Animalia" order="Anthoathecata" pageId="4" pageNumber="195" phylum="Cnidaria" rank="genus">
<emphasis id="B90DC3275162FFD3FBA6F8EBFB111106" box="[1090,1202,1832,1858]" italics="true" pageId="4" pageNumber="195">Millepora</emphasis>
</taxonomicName>
</collectedFrom>
,
<quantity id="4C81B2D05162FFD3FB24F8EBFAA11107" box="[1216,1282,1832,1859]" metricMagnitude="0" metricUnit="m" metricValue="1.5" pageId="4" pageNumber="195" unit="m" value="1.5">
<elevation id="0054F8065162FFD3FB24F8EBFAA11107" box="[1216,1282,1832,1859]" metricMagnitude="0" metricUnit="m" metricValue="1.5" pageId="4" pageNumber="195" unit="m" value="1.5">1.5 m</elevation>
</quantity>
,
<date id="FFC739F55162FFD3FAE9F8EBFF711123" pageId="4" pageNumber="195" value="2002-02-22">
<collectingDate id="EF83C01D5162FFD3FAE9F8EBFF711123" pageId="4" pageNumber="195" value="2002-02-22">February 22, 2002</collectingDate>
</date>
, coll.
<collectorName id="268C7AE35162FFD3FEF1F88EFE6E1122" box="[277,461,1868,1895]" pageId="4" pageNumber="195">I. Liñero-Arana.</collectorName>
</materialsCitation>
<materialsCitation id="3B1115685162FFD3FE37F88FFAF01122" ID-GBIF-Occurrence="3382008319" box="[467,1363,1868,1895]" collectingDate="2002-02-22" collectorName="I. Linero-Arana" country="Venezuela" elevation="2" location="Cumana Turpialito" pageId="4" pageNumber="195" specimenCount="2" typeStatus="paratype">
Nine
<typeStatus id="54C2A1975162FFD3FDF4F88EFDD81123" box="[528,635,1869,1895]" pageId="4" pageNumber="195" type="paratype">paratypes</typeStatus>
(ECOSUR-253),
<collectorName id="268C7AE35162FFD3FCA1F88EFC061123" box="[837,933,1869,1895]" pageId="4" pageNumber="195">Cumaná</collectorName>
,
<collectorName id="268C7AE35162FFD3FC54F88FFB811122" box="[944,1058,1868,1894]" pageId="4" pageNumber="195">Turpialito</collectorName>
, same data as for holotype.
</materialsCitation>
</paragraph>
</subSubSection>
<subSubSection id="C3634CBE5162FFD0FF23F8B3FE821479" lastPageId="7" lastPageNumber="198" pageId="4" pageNumber="195" type="description">
<paragraph id="8BC61F355162FFD3FF23F8B3FB2811EB" blockId="4.[151,1436,1832,2039]" pageId="4" pageNumber="195">
<emphasis id="B90DC3275162FFD3FF23F8B3FEF211CE" bold="true" box="[199,337,1904,1930]" pageId="4" pageNumber="195">Description</emphasis>
.
<typeStatus id="54C2A1975162FFD3FE84F8B3FE6B11CE" box="[352,456,1904,1930]" pageId="4" pageNumber="195" type="holotype">Holotype</typeStatus>
complete (ECOSUR-252) mature male. Body colorless,
<quantity id="4C81B2D05162FFD3FBACF8B2FB3411CF" box="[1096,1175,1905,1931]" metricMagnitude="-2" metricUnit="m" metricValue="1.2" pageId="4" pageNumber="195" unit="mm" value="12.0">12 mm</quantity>
long,
<quantity id="4C81B2D05162FFD3FB3AF8B2FABC11CF" box="[1246,1311,1905,1931]" metricMagnitude="-3" metricUnit="m" metricValue="2.0" pageId="4" pageNumber="195" unit="mm" value="2.0">2 mm</quantity>
wide, with three parathoracic segments, 34 abdominal segments, caudal peduncle
<quantity id="4C81B2D05162FFD3FC54F856FC5211EB" box="[944,1009,1941,1967]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="4" pageNumber="195" unit="mm" value="3.0">3 mm</quantity>
long (
<figureCitation id="134203B05162FFD3FBDDF857FBDE11EB" box="[1081,1149,1940,1967]" captionStart="FIGURE 3" captionStartId="5.[151,250,1804,1828]" captionTargetBox="[151,1435,417,1781]" captionTargetId="figure-129@5.[151,1435,417,1781]" captionTargetPageId="5" captionText="FIGURE 3. Idanthyrsus mikeli n. sp. (ECOSUR-252).A, Holotype complete specimen, lateral view. B,Anterior region, ventral view. C, Anterior region, dorsal view. D, Median ridge and median organ, ventral view. E, Parathoracic region, lateral view. F, Abdomen, ventral view. Scale bars:AC: 1 mm; DF: 0.5 mm.Abbreviations: ab8, abdominal neuropodia segment 8; bo, building organ; ca, cauda; mo, median organ; mr, median ridge; ne, parathoracic neuropodia; no, parathoracic notopodia; pa, palps; tf, tentacular filaments." figureDoi="http://doi.org/10.5281/zenodo.5551981" httpUri="https://zenodo.org/record/5551981/files/figure.png" pageId="4" pageNumber="195">Fig. 3</figureCitation>
).
</paragraph>
<paragraph id="8BC61F355162FFD2FF23F87BFA3B16BD" blockId="4.[151,1436,1832,2039]" lastBlockId="5.[151,1437,151,393]" lastPageId="5" lastPageNumber="196" pageId="4" pageNumber="195">
Opercular crown and opercular stalk completely divided into two lobes (
<figureCitation id="134203B05162FFD3FC16F87BFBE91197" box="[1010,1098,1976,2003]" captionStart="FIGURE 3" captionStartId="5.[151,250,1804,1828]" captionTargetBox="[151,1435,417,1781]" captionTargetId="figure-129@5.[151,1435,417,1781]" captionTargetPageId="5" captionText="FIGURE 3. Idanthyrsus mikeli n. sp. (ECOSUR-252).A, Holotype complete specimen, lateral view. B,Anterior region, ventral view. C, Anterior region, dorsal view. D, Median ridge and median organ, ventral view. E, Parathoracic region, lateral view. F, Abdomen, ventral view. Scale bars:AC: 1 mm; DF: 0.5 mm.Abbreviations: ab8, abdominal neuropodia segment 8; bo, building organ; ca, cauda; mo, median organ; mr, median ridge; ne, parathoracic neuropodia; no, parathoracic notopodia; pa, palps; tf, tentacular filaments." figureDoi="http://doi.org/10.5281/zenodo.5551981" httpUri="https://zenodo.org/record/5551981/files/figure.png" pageId="4" pageNumber="195">Fig. 3C</figureCitation>
). Opercular disc oblique, with two rows of amber paleae; outer row with 19 paleae per lobe, inner row with 13 paleae per lobe. Outer paleae denticulate, 1014 pairs of lateral denticles, curved on convex margin, straight or slightly curved on concave side of paleae (
<figureCitation id="134203B05163FFD2FF0FFF78FEE11691" box="[235,322,187,213]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="5" pageNumber="196">Fig. 4A</figureCitation>
). Base of the blade with transverse thecae (
<figureCitation id="134203B05163FFD2FCF5FF78FCC41691" box="[785,871,187,213]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="5" pageNumber="196">Fig. 4B</figureCitation>
). Blade distally curved at an angle of 150°155°. Inner paleae cylindrical, straight, slowly tapering towards the blunt tip; blade with transverse compact thecae (
<figureCitation id="134203B05163FFD2FAD1FF1CFA2816BD" box="[1333,1419,223,249]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="5" pageNumber="196">Fig. 4C</figureCitation>
).
</paragraph>
<paragraph id="8BC61F355163FFD2FF23FEC0FE2817CD" blockId="5.[151,1437,151,393]" pageId="5" pageNumber="196">
Opercular peduncle colorless (
<figureCitation id="134203B05163FFD2FDC4FEC0FD3E1759" box="[544,669,259,285]" captionStart="FIGURE 3" captionStartId="5.[151,250,1804,1828]" captionTargetBox="[151,1435,417,1781]" captionTargetId="figure-129@5.[151,1435,417,1781]" captionTargetPageId="5" captionText="FIGURE 3. Idanthyrsus mikeli n. sp. (ECOSUR-252).A, Holotype complete specimen, lateral view. B,Anterior region, ventral view. C, Anterior region, dorsal view. D, Median ridge and median organ, ventral view. E, Parathoracic region, lateral view. F, Abdomen, ventral view. Scale bars:AC: 1 mm; DF: 0.5 mm.Abbreviations: ab8, abdominal neuropodia segment 8; bo, building organ; ca, cauda; mo, median organ; mr, median ridge; ne, parathoracic neuropodia; no, parathoracic notopodia; pa, palps; tf, tentacular filaments." figureDoi="http://doi.org/10.5281/zenodo.5551981" httpUri="https://zenodo.org/record/5551981/files/figure.png" pageId="5" pageNumber="196">Fig. 3AC</figureCitation>
). One pair of amber nuchal hooks, slightly recurved, with long limbation, tip blunt (
<figureCitation id="134203B05163FFD2FE85FEE4FE641705" box="[353,455,295,321]" captionStart="FIGURE 3" captionStartId="5.[151,250,1804,1828]" captionTargetBox="[151,1435,417,1781]" captionTargetId="figure-129@5.[151,1435,417,1781]" captionTargetPageId="5" captionText="FIGURE 3. Idanthyrsus mikeli n. sp. (ECOSUR-252).A, Holotype complete specimen, lateral view. B,Anterior region, ventral view. C, Anterior region, dorsal view. D, Median ridge and median organ, ventral view. E, Parathoracic region, lateral view. F, Abdomen, ventral view. Scale bars:AC: 1 mm; DF: 0.5 mm.Abbreviations: ab8, abdominal neuropodia segment 8; bo, building organ; ca, cauda; mo, median organ; mr, median ridge; ne, parathoracic neuropodia; no, parathoracic notopodia; pa, palps; tf, tentacular filaments." figureDoi="http://doi.org/10.5281/zenodo.5551981" httpUri="https://zenodo.org/record/5551981/files/figure.png" pageId="5" pageNumber="196">Figs. 3C</figureCitation>
;
<figureCitation id="134203B05163FFD2FE31FEE4FE521705" box="[469,497,295,321]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="5" pageNumber="196">4J</figureCitation>
). Tentacles and palps colorless. Median ridge as long as the opercular stalk, with marginal brown eyespots. Median organ small, conical, colorless, without eyespots (
<figureCitation id="134203B05163FFD2FBA8FE88FB051721" box="[1100,1190,331,357]" captionStart="FIGURE 3" captionStartId="5.[151,250,1804,1828]" captionTargetBox="[151,1435,417,1781]" captionTargetId="figure-129@5.[151,1435,417,1781]" captionTargetPageId="5" captionText="FIGURE 3. Idanthyrsus mikeli n. sp. (ECOSUR-252).A, Holotype complete specimen, lateral view. B,Anterior region, ventral view. C, Anterior region, dorsal view. D, Median ridge and median organ, ventral view. E, Parathoracic region, lateral view. F, Abdomen, ventral view. Scale bars:AC: 1 mm; DF: 0.5 mm.Abbreviations: ab8, abdominal neuropodia segment 8; bo, building organ; ca, cauda; mo, median organ; mr, median ridge; ne, parathoracic neuropodia; no, parathoracic notopodia; pa, palps; tf, tentacular filaments." figureDoi="http://doi.org/10.5281/zenodo.5551981" httpUri="https://zenodo.org/record/5551981/files/figure.png" pageId="5" pageNumber="196">Fig. 3D</figureCitation>
). Building organ with small brownish spots.
</paragraph>
<caption id="DF064FBD5163FFD2FF73F8CFFE2011F0" ID-DOI="http://doi.org/10.5281/zenodo.5551981" ID-Zenodo-Dep="5551981" httpUri="https://zenodo.org/record/5551981/files/figure.png" pageId="5" pageNumber="196" startId="5.[151,250,1804,1828]" targetBox="[151,1435,417,1781]" targetPageId="5">
<paragraph id="8BC61F355163FFD2FF73F8CFFE2011F0" blockId="5.[151,1437,1804,1972]" pageId="5" pageNumber="196">
<emphasis id="B90DC3275163FFD2FF73F8CFFEB11160" bold="true" box="[151,274,1804,1828]" pageId="5" pageNumber="196">FIGURE 3.</emphasis>
<taxonomicName id="4C7964B65163FFD2FEFCF8CFFE701160" authority="Chávez-López, 2021" authorityName="Chávez-López" authorityYear="2021" box="[280,467,1804,1828]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="5" pageNumber="196" phylum="Annelida" rank="species" species="mikeli" status="sp. nov.">
<emphasis id="B90DC3275163FFD2FEFCF8CFFE701160" box="[280,467,1804,1828]" italics="true" pageId="5" pageNumber="196">Idanthyrsus mikeli</emphasis>
</taxonomicName>
<emphasis id="B90DC3275163FFD2FE3CF8CFFDB31160" bold="true" box="[472,528,1804,1828]" pageId="5" pageNumber="196">
<taxonomicNameLabel id="A23E7E5C5163FFD2FE3CF8CFFDB31160" box="[472,528,1804,1828]" pageId="5" pageNumber="196" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
(ECOSUR-252). A, Holotype complete specimen, lateral view. B, Anterior region, ventral view. C, Anterior region, dorsal view. D, Median ridge and median organ, ventral view. E, Parathoracic region, lateral view. F, Abdomen, ventral view. Scale bars: AC: 1 mm; DF: 0.5 mm. Abbreviations: ab8, abdominal neuropodia segment 8; bo, building organ; ca, cauda; mo, median organ; mr, median ridge; ne, parathoracic neuropodia; no, parathoracic notopodia; pa, palps; tf, tentacular filaments.
</paragraph>
</caption>
<caption id="DF064FBD5160FFD1FF73F97DFED41106" ID-DOI="http://doi.org/10.5281/zenodo.5551983" ID-Zenodo-Dep="5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="6" pageNumber="197" startId="6.[151,250,1726,1750]" targetBox="[179,1409,201,1703]" targetPageId="6">
<paragraph id="8BC61F355160FFD1FF73F97DFED41106" blockId="6.[151,1437,1726,1858]" pageId="6" pageNumber="197">
<emphasis id="B90DC3275160FFD1FF73F97DFEAC1092" bold="true" box="[151,271,1726,1750]" pageId="6" pageNumber="197">FIGURE 4</emphasis>
.
<taxonomicName id="4C7964B65160FFD1FEF8F97DFE791092" authority="Chávez-López, 2021" authorityName="Chávez-López" authorityYear="2021" box="[284,474,1726,1750]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="6" pageNumber="197" phylum="Annelida" rank="species" species="mikeli" status="sp. nov.">
<emphasis id="B90DC3275160FFD1FEF8F97DFE791092" box="[284,474,1726,1750]" italics="true" pageId="6" pageNumber="197">Idanthyrsus mikeli</emphasis>
</taxonomicName>
<emphasis id="B90DC3275160FFD1FE05F97CFDBF1093" bold="true" box="[481,540,1727,1751]" pageId="6" pageNumber="197">
<taxonomicNameLabel id="A23E7E5C5160FFD1FE05F97CFDBF1093" box="[481,540,1727,1751]" pageId="6" pageNumber="197" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
(ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation.
</paragraph>
</caption>
<paragraph id="8BC61F355161FFD0FF23FF54FC141691" blockId="7.[151,1437,151,1185]" pageId="7" pageNumber="198">Thorax without notochaetae. Chaetiger 1 with a pair of neuropodia bearing capillary chaetae. Chaetiger 2 with capillary neurochaetae, two pairs of small cirri, and a pair of branchiae.</paragraph>
<paragraph id="8BC61F355161FFD0FF23FF1CFAD41759" blockId="7.[151,1437,151,1185]" pageId="7" pageNumber="198">
Parathorax colorless with three segments, all with paired branchiae (
<figureCitation id="134203B05161FFD0FC4AFF1CFBA116BD" box="[942,1026,223,249]" captionStart="FIGURE 3" captionStartId="5.[151,250,1804,1828]" captionTargetBox="[151,1435,417,1781]" captionTargetId="figure-129@5.[151,1435,417,1781]" captionTargetPageId="5" captionText="FIGURE 3. Idanthyrsus mikeli n. sp. (ECOSUR-252).A, Holotype complete specimen, lateral view. B,Anterior region, ventral view. C, Anterior region, dorsal view. D, Median ridge and median organ, ventral view. E, Parathoracic region, lateral view. F, Abdomen, ventral view. Scale bars:AC: 1 mm; DF: 0.5 mm.Abbreviations: ab8, abdominal neuropodia segment 8; bo, building organ; ca, cauda; mo, median organ; mr, median ridge; ne, parathoracic neuropodia; no, parathoracic notopodia; pa, palps; tf, tentacular filaments." figureDoi="http://doi.org/10.5281/zenodo.5551981" httpUri="https://zenodo.org/record/5551981/files/figure.png" pageId="7" pageNumber="198">Fig. 3E</figureCitation>
). Notopodia with six lanceolate chaetae, seven capillary chaetae (
<figureCitation id="134203B05161FFD0FE34FEC0FD8A1759" box="[464,553,259,285]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="7" pageNumber="198">Fig. 4D</figureCitation>
). Neurochaetae lanceolate and capillaries, thinner than notochaetae (
<figureCitation id="134203B05161FFD0FAF1FEC0FAC91759" box="[1301,1386,259,285]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="7" pageNumber="198">Fig. 4E</figureCitation>
).
</paragraph>
<paragraph id="8BC61F355161FFD0FF23FEE4FD2317E9" blockId="7.[151,1437,151,1185]" pageId="7" pageNumber="198">
Abdominal segments colorless, with a pair of branchiae of decreasing size towards posterior segments; absent in the last five segments. Neuropodia with verticillate chaetae (
<figureCitation id="134203B05161FFD0FCB3FE88FC0E1721" box="[855,941,331,357]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="7" pageNumber="198">Fig. 4F</figureCitation>
). Notopodia with a series of uncini with 78 transverse rows of teeth (
<figureCitation id="134203B05161FFD0FE57FEACFDAD17CD" box="[435,526,367,393]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="7" pageNumber="198">Fig. 4G</figureCitation>
). Abdominal segment eight with longer neurochaetae (
<figureCitation id="134203B05161FFD0FB92FEACFB6F17CD" box="[1142,1228,367,393]" captionStart="FIGURE 3" captionStartId="5.[151,250,1804,1828]" captionTargetBox="[151,1435,417,1781]" captionTargetId="figure-129@5.[151,1435,417,1781]" captionTargetPageId="5" captionText="FIGURE 3. Idanthyrsus mikeli n. sp. (ECOSUR-252).A, Holotype complete specimen, lateral view. B,Anterior region, ventral view. C, Anterior region, dorsal view. D, Median ridge and median organ, ventral view. E, Parathoracic region, lateral view. F, Abdomen, ventral view. Scale bars:AC: 1 mm; DF: 0.5 mm.Abbreviations: ab8, abdominal neuropodia segment 8; bo, building organ; ca, cauda; mo, median organ; mr, median ridge; ne, parathoracic neuropodia; no, parathoracic notopodia; pa, palps; tf, tentacular filaments." figureDoi="http://doi.org/10.5281/zenodo.5551981" httpUri="https://zenodo.org/record/5551981/files/figure.png" pageId="7" pageNumber="198">Fig. 3F</figureCitation>
). Caudal peduncle cylindrical, colorless, translucent (
<figureCitation id="134203B05161FFD0FDFDFE50FDD017E9" box="[537,627,403,429]" captionStart="FIGURE 3" captionStartId="5.[151,250,1804,1828]" captionTargetBox="[151,1435,417,1781]" captionTargetId="figure-129@5.[151,1435,417,1781]" captionTargetPageId="5" captionText="FIGURE 3. Idanthyrsus mikeli n. sp. (ECOSUR-252).A, Holotype complete specimen, lateral view. B,Anterior region, ventral view. C, Anterior region, dorsal view. D, Median ridge and median organ, ventral view. E, Parathoracic region, lateral view. F, Abdomen, ventral view. Scale bars:AC: 1 mm; DF: 0.5 mm.Abbreviations: ab8, abdominal neuropodia segment 8; bo, building organ; ca, cauda; mo, median organ; mr, median ridge; ne, parathoracic neuropodia; no, parathoracic notopodia; pa, palps; tf, tentacular filaments." figureDoi="http://doi.org/10.5281/zenodo.5551981" httpUri="https://zenodo.org/record/5551981/files/figure.png" pageId="7" pageNumber="198">Fig. 3A</figureCitation>
).
</paragraph>
<paragraph id="8BC61F355161FFD0FF23FE75FE821479" blockId="7.[151,1437,151,1185]" pageId="7" pageNumber="198">
<emphasis id="B90DC3275161FFD0FF23FE75FE9B1794" bold="true" box="[199,312,438,464]" pageId="7" pageNumber="198">Variation</emphasis>
. Body
<quantity id="4C81B2D05161FFD0FE68FE74FE5B1795" box="[396,504,439,465]" metricMagnitude="-2" metricUnit="m" metricValue="1.1" metricValueMax="1.4" metricValueMin="0.8" pageId="7" pageNumber="198" unit="mm" value="11.0" valueMax="14.0" valueMin="8.0">814 mm</quantity>
in total length,
<quantity id="4C81B2D05161FFD0FD4AFE74FC821795" box="[686,801,439,465]" metricMagnitude="-3" metricUnit="m" metricValue="1.6" metricValueMax="2.0" metricValueMin="1.2" pageId="7" pageNumber="198" unit="mm" value="1.6" valueMax="2.0" valueMin="1.2">1.22 mm</quantity>
wide, 2534 abdominal segments, caudal peduncle
<quantity id="4C81B2D05161FFD0FA96FE74FF6517B1" metricMagnitude="-3" metricUnit="m" metricValue="2.5" metricValueMax="3.0" metricValueMin="2.0" pageId="7" pageNumber="198" unit="mm" value="2.5" valueMax="3.0" valueMin="2.0">23 mm</quantity>
. Opercular crown made of 1119 outer paleae per lobe (commonly 1718 paleae), and 718 inner paleae per lobe (regularly 1315 paleae). Almost all specimens had one pair of hooks, except for two that had two hooks on the left side.
</paragraph>
</subSubSection>
<subSubSection id="C3634CBE5161FFD0FF23FD84FE8214ED" pageId="7" pageNumber="198" type="etymology">
<paragraph id="8BC61F355161FFD0FF23FD84FE8214ED" blockId="7.[151,1437,151,1185]" pageId="7" pageNumber="198">
<emphasis id="B90DC3275161FFD0FF23FD84FEEB1425" bold="true" box="[199,328,583,609]" pageId="7" pageNumber="198">Etymology</emphasis>
. This species is named after Dr. Ildelfonso Liñero-Arana (Mikel), who collected the
<typeStatus id="54C2A1975161FFD0FAC4FD84FAF31425" box="[1312,1360,583,609]" pageId="7" pageNumber="198">type</typeStatus>
specimens. The name is based on his nickname Mikel. The species name is a noun in the genitive case (
<bibRefCitation id="EFE862C45161FFD0FAF6FDA8FA3B14C1" author="ICZN &amp; International Commission on Zoological Nomenclature" box="[1298,1432,619,645]" pageId="7" pageNumber="198" refId="ref13655" refString="ICZN [International Commission on Zoological Nomenclature] (1999) International Code of Zoological Nomenclature. 4 th Edition. International Trust for Zoological Nomenclature in association with the British Museum (Natural History), London. 306 pp. [http: // www. iczn. org / iczn / index. jsp]" type="book" year="1999">ICZN 1999</bibRefCitation>
, Art. 31.1.2).
</paragraph>
</subSubSection>
<subSubSection id="C3634CBE5161FFD0FF23FD71FDC114B5" pageId="7" pageNumber="198" type="distribution">
<paragraph id="8BC61F355161FFD0FF23FD71FDC114B5" blockId="7.[151,1437,151,1185]" pageId="7" pageNumber="198">
<emphasis id="B90DC3275161FFD0FF23FD71FEFA1488" bold="true" box="[199,345,690,716]" pageId="7" pageNumber="198">Distribution</emphasis>
. Turpialito, Cumaná,
<collectingCountry id="F36E5FA55161FFD0FDB6FD70FD661489" box="[594,709,691,717]" name="Venezuela" pageId="7" pageNumber="198">Venezuela</collectingCountry>
at
<quantity id="4C81B2D05161FFD0FD0DFD71FC881489" box="[745,811,690,717]" metricMagnitude="0" metricUnit="m" metricValue="1.5" pageId="7" pageNumber="198" unit="m" value="1.5">1.5 m</quantity>
depth. Associated with
<taxonomicName id="4C7964B65161FFD0FBDFFD70FB081489" authorityName="Linnaeus" authorityYear="1758" box="[1083,1195,691,717]" class="Hydrozoa" family="Milleporidae" genus="Millepora" kingdom="Animalia" order="Anthoathecata" pageId="7" pageNumber="198" phylum="Cnidaria" rank="genus">
<emphasis id="B90DC3275161FFD0FBDFFD70FB081489" box="[1083,1195,691,717]" italics="true" pageId="7" pageNumber="198">Millepora</emphasis>
</taxonomicName>
corals. Specimens in the same aggregation as
<taxonomicName id="4C7964B65161FFD0FE4EFD14FDBF14B5" authority="Chávez-López, 2021" authorityName="Chávez-López" authorityYear="2021" box="[426,540,727,753]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="bastidai" status="sp. nov.">
<emphasis id="B90DC3275161FFD0FE4EFD14FDBF14B5" box="[426,540,727,753]" italics="true" pageId="7" pageNumber="198">I. bastidai</emphasis>
</taxonomicName>
<emphasis id="B90DC3275161FFD0FDC7FD14FDC114B5" bold="true" box="[547,610,727,753]" pageId="7" pageNumber="198">
<taxonomicNameLabel id="A23E7E5C5161FFD0FDC7FD14FDC114B5" box="[547,610,727,753]" pageId="7" pageNumber="198" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
</paragraph>
</subSubSection>
<subSubSection id="C3634CBE5161FFD0FF23FD38FECD12E5" pageId="7" pageNumber="198" type="discussion">
<paragraph id="8BC61F355161FFD0FF23FD38FA211255" blockId="7.[151,1437,151,1185]" pageId="7" pageNumber="198">
<emphasis id="B90DC3275161FFD0FF23FD38FE971551" bold="true" box="[199,308,763,789]" pageId="7" pageNumber="198">Remarks</emphasis>
.
<taxonomicName id="4C7964B65161FFD0FEA5FD38FDB31551" authority="Chávez-López, 2021" authorityName="Chávez-López" authorityYear="2021" box="[321,528,763,789]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="mikeli" status="sp. nov.">
<emphasis id="B90DC3275161FFD0FEA5FD38FDB31551" box="[321,528,763,789]" italics="true" pageId="7" pageNumber="198">Idanthyrsus mikeli</emphasis>
</taxonomicName>
<emphasis id="B90DC3275161FFD0FDF2FD38FDF71551" bold="true" box="[534,596,763,789]" pageId="7" pageNumber="198">
<taxonomicNameLabel id="A23E7E5C5161FFD0FDF2FD38FDF71551" box="[534,596,763,789]" pageId="7" pageNumber="198" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
resembles
<taxonomicName id="4C7964B65161FFD0FD35FD38FBA81551" authority="Chamberlin, 1919 b" authorityName="Chamberlin" authorityYear="1919" box="[721,1035,763,789]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="cretus">
<emphasis id="B90DC3275161FFD0FD35FD38FC891550" box="[721,810,763,788]" italics="true" pageId="7" pageNumber="198">I. cretus</emphasis>
<bibRefCitation id="EFE862C45161FFD0FCD5FD38FBA81551" author="Chamberlin, R. V." box="[817,1035,763,789]" pageId="7" pageNumber="198" pagination="1 - 514" refId="ref13008" refString="Chamberlin, R. V. (1919 b) The Annelida Polychaeta of the Albatross tropical Pacific expedition 1891 - 1905. Memoirs of the Museum of Comparative Zoology, Harvard University, 48, 1 - 514." type="journal article" year="1919">Chamberlin, 1919b</bibRefCitation>
</taxonomicName>
, from Taboguilla Island,
<collectingCountry id="F36E5FA55161FFD0FAC5FD38FADE1551" box="[1313,1405,763,789]" name="Panama" pageId="7" pageNumber="198">Panama</collectingCountry>
, in having denticulate outer paleae with distally curved blades. However, these species differ in the morphology of the opercular paleae and nuchal hooks.
<taxonomicName id="4C7964B65161FFD0FDCBFC80FD5C1519" authority="Chávez-López, 2021" authorityName="Chávez-López" authorityYear="2021" box="[559,767,835,861]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="mikeli" status="sp. nov.">
<emphasis id="B90DC3275161FFD0FDCBFC80FD5C1519" box="[559,767,835,861]" italics="true" pageId="7" pageNumber="198">Idanthyrsus mikeli</emphasis>
</taxonomicName>
<emphasis id="B90DC3275161FFD0FCECFC80FCEB1519" bold="true" box="[776,840,835,861]" pageId="7" pageNumber="198">
<taxonomicNameLabel id="A23E7E5C5161FFD0FCECFC80FCEB1519" box="[776,840,835,861]" pageId="7" pageNumber="198" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
has outer paleae with broad transverse thecae in the basal region and 1018 lateral denticles of similar size (
<figureCitation id="134203B05161FFD0FCF0FCA4FC3315C5" box="[788,912,871,897]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="7" pageNumber="198">Fig. 4AB</figureCitation>
), whereas
<taxonomicName id="4C7964B65161FFD0FBEDFCA4FBC615C4" authorityName="Chamberlin" authorityYear="1919" box="[1033,1125,871,896]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="cretus">
<emphasis id="B90DC3275161FFD0FBEDFCA4FBC615C4" box="[1033,1125,871,896]" italics="true" pageId="7" pageNumber="198">I. cretus</emphasis>
</taxonomicName>
has outer paleae with thinner, less elevated, and compact thecae and 1632 pairs of lateral denticles with finer denticles on one margin. The margins of the inner paleae are also different, being slightly annulated in
<taxonomicName id="4C7964B65161FFD0FC22FC6CFB82158D" authority="Chávez-López, 2021" authorityName="Chávez-López" authorityYear="2021" box="[966,1057,943,969]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="mikeli" status="sp. nov.">
<emphasis id="B90DC3275161FFD0FC22FC6CFB82158D" box="[966,1057,943,969]" italics="true" pageId="7" pageNumber="198">I. mikeli</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A23E7E5C5161FFD0FBCCFC6CFBC5158D" box="[1064,1126,943,969]" pageId="7" pageNumber="198" rank="species">
<emphasis id="B90DC3275161FFD0FBCCFC6CFBFC158D" bold="true" box="[1064,1119,943,969]" pageId="7" pageNumber="198">n. sp</emphasis>
.
</taxonomicNameLabel>
(
<figureCitation id="134203B05161FFD0FB91FC6CFB41158D" box="[1141,1250,943,969]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="7" pageNumber="198">Fig. 4C, I</figureCitation>
) and completely smooth in
<taxonomicName id="4C7964B65161FFD0FEE8FC10FEC515A8" authorityName="Chamberlin" authorityYear="1919" box="[268,358,979,1004]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="cretus">
<emphasis id="B90DC3275161FFD0FEE8FC10FEC515A8" box="[268,358,979,1004]" italics="true" pageId="7" pageNumber="198">I. cretus</emphasis>
</taxonomicName>
. Besides,
<taxonomicName id="4C7964B65161FFD0FE3CFC10FD9015A9" authority="Chávez-López, 2021" authorityName="Chávez-López" authorityYear="2021" box="[472,563,979,1005]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="mikeli" status="sp. nov.">
<emphasis id="B90DC3275161FFD0FE3CFC10FD9015A9" box="[472,563,979,1005]" italics="true" pageId="7" pageNumber="198">I. mikeli</emphasis>
</taxonomicName>
<emphasis id="B90DC3275161FFD0FDDEFC10FDDB15A9" bold="true" box="[570,632,979,1005]" pageId="7" pageNumber="198">
<taxonomicNameLabel id="A23E7E5C5161FFD0FDDEFC10FDDB15A9" box="[570,632,979,1005]" pageId="7" pageNumber="198" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
has blunt nuchal hooks with a long limbation that almost reaches the tip (
<figureCitation id="134203B05161FFD0FF44FC34FF4C1255" box="[160,239,1015,1041]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="7" pageNumber="198">Fig. 4J</figureCitation>
), whereas in
<taxonomicName id="4C7964B65161FFD0FE60FC34FE7D1254" authorityName="Chamberlin" authorityYear="1919" box="[388,478,1015,1040]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="cretus">
<emphasis id="B90DC3275161FFD0FE60FC34FE7D1254" box="[388,478,1015,1040]" italics="true" pageId="7" pageNumber="198">I. cretus</emphasis>
</taxonomicName>
nuchal hooks are sharp with short limbation that does not reach the convex region.
</paragraph>
<paragraph id="8BC61F355161FFD0FF23FBD8FECD12E5" blockId="7.[151,1437,151,1185]" pageId="7" pageNumber="198">
<taxonomicName id="4C7964B65161FFD0FF23FBD8FE351271" authority="Chávez-López, 2021" authorityName="Chávez-López" authorityYear="2021" box="[199,406,1051,1077]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="mikeli" status="sp. nov.">
<emphasis id="B90DC3275161FFD0FF23FBD8FE351271" box="[199,406,1051,1077]" italics="true" pageId="7" pageNumber="198">Idanthyrsus mikeli</emphasis>
</taxonomicName>
<emphasis id="B90DC3275161FFD0FE79FBD8FE7F1271" bold="true" box="[413,476,1051,1077]" pageId="7" pageNumber="198">
<taxonomicNameLabel id="A23E7E5C5161FFD0FE79FBD8FE7F1271" box="[413,476,1051,1077]" pageId="7" pageNumber="198" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
was found in the same aggregation as
<taxonomicName id="4C7964B65161FFD0FC68FBD8FC5E1271" authority="Chávez-López, 2021" authorityName="Chávez-López" authorityYear="2021" box="[908,1021,1051,1077]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="bastidai" status="sp. nov.">
<emphasis id="B90DC3275161FFD0FC68FBD8FC5E1271" box="[908,1021,1051,1077]" italics="true" pageId="7" pageNumber="198">I. bastidai</emphasis>
</taxonomicName>
<emphasis id="B90DC3275161FFD0FBE0FBD8FBE11271" bold="true" box="[1028,1090,1051,1077]" pageId="7" pageNumber="198">
<taxonomicNameLabel id="A23E7E5C5161FFD0FBE0FBD8FBE11271" box="[1028,1090,1051,1077]" pageId="7" pageNumber="198" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
Both species are distinguished mainly by the morphology of the outer paleae, presenting distally curved blades and short, curved marginal denticles in
<taxonomicName id="4C7964B65161FFD0FF51FBA0FEB21239" authority="Chávez-López, 2021" authorityName="Chávez-López" authorityYear="2021" box="[181,273,1123,1149]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="mikeli" status="sp. nov.">
<emphasis id="B90DC3275161FFD0FF51FBA0FEB21239" box="[181,273,1123,1149]" italics="true" pageId="7" pageNumber="198">I. mikeli</emphasis>
</taxonomicName>
<emphasis id="B90DC3275161FFD0FEFDFBA0FEFA1239" bold="true" box="[281,345,1123,1149]" pageId="7" pageNumber="198">
<taxonomicNameLabel id="A23E7E5C5161FFD0FEFDFBA0FEFA1239" box="[281,345,1123,1149]" pageId="7" pageNumber="198" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
(
<figureCitation id="134203B05161FFD0FE8DFBA0FE461239" box="[361,485,1123,1149]" captionStart="FIGURE 4" captionStartId="6.[151,250,1726,1750]" captionTargetBox="[179,1409,201,1703]" captionTargetId="figure-31@6.[179,1409,201,1703]" captionTargetPageId="6" captionText="FIGURE 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. HI, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, CD, F, HJ: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551983" httpUri="https://zenodo.org/record/5551983/files/figure.png" pageId="7" pageNumber="198">Fig. 4A, H</figureCitation>
) and nearly straight blades with long, slender, straight marginal spines in
<taxonomicName id="4C7964B65161FFD0FACEFBA0FA3F1239" authority="Chávez-López, 2021" authorityName="Chávez-López" authorityYear="2021" box="[1322,1436,1123,1149]" class="Polychaeta" family="Sabellariidae" genus="Idanthyrsus" kingdom="Animalia" order="Canalipalpata" pageId="7" pageNumber="198" phylum="Annelida" rank="species" species="bastidai" status="sp. nov.">
<emphasis id="B90DC3275161FFD0FACEFBA0FA3F1239" box="[1322,1436,1123,1149]" italics="true" pageId="7" pageNumber="198">I. bastidai</emphasis>
</taxonomicName>
<emphasis id="B90DC3275161FFD0FF73FB44FF7512E5" bold="true" box="[151,214,1159,1185]" pageId="7" pageNumber="198">
<taxonomicNameLabel id="A23E7E5C5161FFD0FF73FB44FF7512E5" box="[151,214,1159,1185]" pageId="7" pageNumber="198" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
(
<figureCitation id="134203B05161FFD0FF02FB44FEC112E5" box="[230,354,1159,1185]" captionStart="FIGURE 2" captionStartId="3.[151,250,1924,1948]" captionTargetBox="[219,1368,181,1900]" captionTargetId="figure-18@3.[219,1368,181,1900]" captionTargetPageId="3" captionText="FIGURE 2. Idanthyrsus bastidai n. sp. (ECOSUR-250). AB, Outer palea. C, Inner palea. D, Tip of inner palea. E, Abdominal neurochaetae. F, Abdominal uncini. G, Paratype with fragments of tubes (ECOSUR-251). H, Nuchal hook of another paratype. Scale bars: AC, E: 100 µm; D: 20 µm; F: 10 µm; G: 1 mm. Abbreviation: Li, limbation." figureDoi="http://doi.org/10.5281/zenodo.5551979" httpUri="https://zenodo.org/record/5551979/files/figure.png" pageId="7" pageNumber="198">Fig. 2AB</figureCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>