treatments-xml/data/85/7C/86/857C86680E7DFFF2B9F13C9FFAF5EEC8.xml
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<document id="EACDC7CF745198F03EB99B75BC520CD5" ID-CLB-Dataset="8799" ID-DOI="10.11646/zootaxa.4821.3.4" ID-GBIF-Dataset="30186aa6-d5ef-4204-907b-1b6bc37af396" ID-ISSN="1175-5326" ID-Zenodo-Dep="4401032" ID-ZooBank="F5D6CEBE-B8BC-4F73-85F7-EB3698A69512" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1609332003777" checkinUser="plazi" docAuthor="Zhang, Jinghuai, Hutchings, Pat, Burghardt, Ingo &amp; Kupriyanova, Elena" docDate="2020" docId="857C86680E7DFFF2B9F13C9FFAF5EEC8" docLanguage="en" docName="zootaxa.4821.3.4.pdf" docOrigin="Zootaxa 4821 (3)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Phalacrostemma Marenzeller 1895" docType="treatment" docVersion="5" lastPageNumber="502" masterDocId="7945FE100E72FFFDB9663F3CFFD4E939" masterDocTitle="Two new species of Sabellariidae (Annelida, Polychaeta) from the abyss of eastern Australia" masterLastPageNumber="510" masterPageNumber="487" pageNumber="502" updateTime="1698849556444" updateUser="ExternalLinkService" zenodo-license-document="CLOSED">
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<mods:title id="0D2045D5AFBA2AEDBEF28D08B7F040CA">Two new species of Sabellariidae (Annelida, Polychaeta) from the abyss of eastern Australia</mods:title>
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<mods:namePart id="88EC334DBB207665F03FCCF5B790E4DE">Zhang, Jinghuai</mods:namePart>
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<mods:affiliation id="132E92C3EB9641288BA81B5C5485C4CF">South China Sea Environmental Monitoring Center, State Oceanic Administration, 155 Xingangxi Road, Guangzhou, P. R. China Australian Museum Research Institute, Australian Museum, 1, William Street, 2010, New South Wales, Australia. &amp; Department of Biological Sciences, Macquarie University, North Ryde 2109, Australia &amp; zhangjinghuai @ sohu. com; https: // orcid. org / 0000 - 0003 - 4745 - 6462</mods:affiliation>
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<mods:namePart id="CA1E1FCE56FF2489C8DD48F629EF1C38">Hutchings, Pat</mods:namePart>
<mods:affiliation id="C666384605135FF2D1BCE6034C031BA9">Department of Biological Sciences, Macquarie University, North Ryde 2109, Australia</mods:affiliation>
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<mods:namePart id="0EF8292AF61DB9AA54B02A9A511B6CA4">Burghardt, Ingo</mods:namePart>
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<mods:affiliation id="19FE3C44EFA043EA19DA63656B1FC9C1">Ingo. burghardt @ austmus. gov. au; https: // orcid. org / 0000 - 0001 - 5251 - 1708</mods:affiliation>
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<mods:namePart id="49A5651251A4FFA998E559F83685BF56">Kupriyanova, Elena</mods:namePart>
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<mods:affiliation id="7B2F295D04E945F6FD00519E021C18A9">Department of Biological Sciences, Macquarie University, North Ryde 2109, Australia &amp; Elena. kupriyanova @ austmus. gov. au; https: // orcid. org / 0000 - 0003 - 0336 - 4718</mods:affiliation>
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<treatment id="857C86680E7DFFF2B9F13C9FFAF5EEC8" ID-DOI="http://doi.org/10.5281/zenodo.4450329" ID-GBIF-Taxon="177008354" ID-Zenodo-Dep="4450329" LSID="urn:lsid:plazi:treatment:857C86680E7DFFF2B9F13C9FFAF5EEC8" httpUri="http://treatment.plazi.org/id/857C86680E7DFFF2B9F13C9FFAF5EEC8" lastPageNumber="502" pageId="15" pageNumber="502">
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<paragraph id="0D6A377E0E7DFFF2B9F13C9FFE5AEA87" blockId="15.[151,398,931,994]" box="[151,398,931,958]" pageId="15" pageNumber="502">
<heading id="562280120E7DFFF2B9F13C9FFE5AEA87" bold="true" box="[151,398,931,958]" fontSize="11" level="1" pageId="15" pageNumber="502" reason="1">
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<taxonomicName id="CAD54CFD0E7DFFF2B9F13C9FFEB7EA87" ID-CoL="84RZQ" authorityName="Marenzeller" authorityYear="1895" box="[151,355,931,958]" class="Polychaeta" family="Sabellariidae" genus="Phalacrostemma" kingdom="Animalia" order="Sabellida" pageId="15" pageNumber="502" phylum="Annelida" rank="genus">
<emphasis id="3FA1EB6C0E7DFFF2B9F13C9FFEB7EA87" bold="true" box="[151,355,931,958]" italics="true" pageId="15" pageNumber="502">Phalacrostemma</emphasis>
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sp.
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</paragraph>
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<subSubSection id="45CF64F50E7DFFF2B9F13CF4FF33EADB" box="[151,231,968,994]" pageId="15" pageNumber="502" type="description">
<paragraph id="0D6A377E0E7DFFF2B9F13CF4FF33EADB" blockId="15.[151,398,931,994]" box="[151,231,968,994]" pageId="15" pageNumber="502">
<figureCitation id="95EE2BFB0E7DFFF2B9F13CF4FF33EADB" box="[151,231,968,994]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10</figureCitation>
</paragraph>
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<subSubSection id="45CF64F50E7DFFF2B9F13B36FCD1ED73" pageId="15" pageNumber="502" type="materials_examined">
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<emphasis id="3FA1EB6C0E7DFFF2B9F13B36FE0CED1D" bold="true" box="[151,472,1034,1060]" pageId="15" pageNumber="502">Material examined. St. 128</emphasis>
, 23º37.872´
<geoCoordinate id="68E151B90E7DFFF2BB163B37FD27ED1C" box="[624,755,1034,1061]" degrees="23" direction="south" minutes="39.54" orientation="latitude" pageId="15" pageNumber="502" precision="9" value="-23.659">23º 39.54´S</geoCoordinate>
154º39.582´
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,
<quantity id="CA2D9A9B0E7DFFF2BD263B37FB09ED1C" box="[1088,1245,1035,1061]" metricMagnitude="3" metricUnit="m" metricValue="1.7655" metricValueMax="1.77" metricValueMin="1.761" pageId="15" pageNumber="502" unit="m" value="1765.5" valueMax="1770.0" valueMin="1761.0">17611770 m</quantity>
,
<materialsCitation id="BDBD3D230E7DFFF2BD8E3B37FCD5ED73" ID-GBIF-Occurrence="3019614305" collectingDate="2017-06-13" collectionCode="AM" pageId="15" pageNumber="502" specimenCount="1">
beam trawl,
<date id="796B11BE0E7DFFF2BC123B37FED9ED70" pageId="15" pageNumber="502" value="2017-06-13">
<collectingDate id="692FE8560E7DFFF2BC123B37FED9ED70" pageId="15" pageNumber="502" value="2017-06-13">
13
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June 2017
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,
<collectionCode id="6BC4AFBB0E7DFFF2B8703B13FE97ED70" box="[278,323,1071,1097]" country="Australia" name="Australian Museum" pageId="15" pageNumber="502" type="Museum">AM</collectionCode>
W.50676,
<specimenCount id="1BD3FCF70E7DFFF2B8DA3B13FDDFED70" box="[444,523,1071,1097]" pageId="15" pageNumber="502" type="generic">1 spec.</specimenCount>
(tissue sample taken)
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.
</paragraph>
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<subSubSection id="45CF64F50E7DFFF2B9A13B6EFC67EE04" pageId="15" pageNumber="502" type="description">
<paragraph id="0D6A377E0E7DFFF2B9A13B6EFB21EDA8" blockId="15.[151,1437,1034,2033]" pageId="15" pageNumber="502">
<emphasis id="3FA1EB6C0E7DFFF2B9A13B6EFE85ED55" bold="true" box="[199,337,1106,1132]" pageId="15" pageNumber="502">Description</emphasis>
. Body incomplete, reddish-brown preserved in alcohol, gradually tapering to posterior end (
<figureCitation id="95EE2BFB0E7DFFF2BC133B6FFF1FEDA8" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig 10A</figureCitation>
). Body length 4.0 mm from paleae to parathoracic segments,
<quantity id="CA2D9A9B0E7DFFF2BA1A3B4BFC06EDA8" box="[892,978,1143,1169]" metricMagnitude="-4" metricUnit="m" metricValue="9.0" pageId="15" pageNumber="502" unit="mm" value="0.9">0.9 mm</quantity>
maximum in body width.
</paragraph>
<paragraph id="0D6A377E0E7DFFF2B9A13BA7FD62EDC4" blockId="15.[151,1437,1034,2033]" pageId="15" pageNumber="502">
Opercular lobes completely fused with distal end perpendicular to longitudinal axis (
<figureCitation id="95EE2BFB0E7DFFF2BD123BA7FB07ED8C" box="[1140,1235,1179,1205]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig 10B</figureCitation>
). Operculum with 12 pairs of broken outer paleae; outer paleae golden as simple spines with pointed tips and compact thecae with straight, not expanded margins (
<figureCitation id="95EE2BFB0E7DFFF2B8993BDFFDB3EDC4" box="[511,615,1251,1277]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10A</figureCitation>
, EG).
</paragraph>
<paragraph id="0D6A377E0E7DFFF2B9A13A3BFBEFEC18" blockId="15.[151,1437,1034,2033]" box="[199,1083,1287,1313]" pageId="15" pageNumber="502">One pair of inner paleae present, amber, with smooth surface and tapering tips.</paragraph>
<paragraph id="0D6A377E0E7DFFF2B9A13A17FEBEEC50" blockId="15.[151,1437,1034,2033]" pageId="15" pageNumber="502">
Eight pairs of robust and tapering opercular papillae, peripheral to outer paleae (
<figureCitation id="95EE2BFB0E7DFFF2BD2D3A17FB4EEC7C" box="[1099,1178,1323,1349]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10</figureCitation>
BC), not extending to tip of outer paleae.
</paragraph>
<paragraph id="0D6A377E0E7DFFF2B9A13A4FFA92ECEC" blockId="15.[151,1437,1034,2033]" pageId="15" pageNumber="502">
Two pairs of flattened nuchal hooks, with poorly developed limbation on concave side (
<figureCitation id="95EE2BFB0E7DFFF2BDD03A4FFAF5ECB4" box="[1206,1313,1395,1421]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10D</figureCitation>
). A medial organ present at dorsal junction of opercular lobes. Eyes not observed. Tentacular filaments absent (
<figureCitation id="95EE2BFB0E7DFFF2BD973AABFA95EC88" box="[1265,1345,1431,1457]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10</figureCitation>
BC). A pair of buccal flaps present (
<figureCitation id="95EE2BFB0E7DFFF2B8B03A87FDE8ECEC" box="[470,572,1467,1493]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10B</figureCitation>
). A pair of short robust palps, not extending to operculum (
<figureCitation id="95EE2BFB0E7DFFF2BDB43A87FAEDECEC" box="[1234,1337,1467,1493]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10B</figureCitation>
).
</paragraph>
<paragraph id="0D6A377E0E7DFFF2B9A13AE3FBD8EF5C" blockId="15.[151,1437,1034,2033]" pageId="15" pageNumber="502">
Thoracic segment 1 (chaetiger 1) with pair of long and tapering neuropodial cirri and capillary chaetae (
<figureCitation id="95EE2BFB0E7DFFF2BC093AE3FF67EF24" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10</figureCitation>
BC). Thoracic segment 2 (chaetiger 2) with one pair of broad triangular lateral lobes between branchia and neuropodia (
<figureCitation id="95EE2BFB0E7DFFF2B840391BFE5BEF78" box="[294,399,1575,1601]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10C</figureCitation>
). Eight pairs of dorsal tapering branchiae present from thoracic segment 2, largest ones on parathoracic segments, reducing posteriorly in size from abdominal segment 8.
</paragraph>
<paragraph id="0D6A377E0E7DFFF2B9A13953FB9AEFCC" blockId="15.[151,1437,1034,2033]" pageId="15" pageNumber="502">
Segments 36 (parathoracic) with two
<typeStatus id="D26E89DC0E7DFFF2BB1E3953FD67EFB0" box="[632,691,1647,1673]" pageId="15" pageNumber="502">types</typeStatus>
of notochaetae arranged in transverse rows; about 46 robust nonretractile lanceolate chaetae interspersed with some fine capillaries (
<figureCitation id="95EE2BFB0E7DFFF2BAF339AFFBCBEF94" box="[917,1055,1683,1709]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10A, H</figureCitation>
). Segments 36 with two
<typeStatus id="D26E89DC0E7DFFF2BC2539AFFAAAEF94" box="[1347,1406,1683,1709]" pageId="15" pageNumber="502">types</typeStatus>
of neurochaetae arranged transversely, about four fine lanceolate chaetae interspersed with several fine short capillaries. Notopodial lanceolate chaetae much stouter than those in neuropodia (
<figureCitation id="95EE2BFB0E7DFFF2BABF39E7FB95EFCC" box="[985,1089,1755,1781]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10A</figureCitation>
).
</paragraph>
<paragraph id="0D6A377E0E7DFFF2B9A139C3FC67EE04" blockId="15.[151,1437,1034,2033]" pageId="15" pageNumber="502">
Abdominal notopodia as erect expanded tori, with number of uncini within torus decreasing posteriorly. Neuropodia with long fine capillaries. Cauda lost (
<figureCitation id="95EE2BFB0E7DFFF2BBEE381FFD24EE04" box="[648,752,1827,1853]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10A</figureCitation>
). Tube unknown.
</paragraph>
</subSubSection>
<subSubSection id="45CF64F50E7DFFF2B9A1387BFAF5EEC8" pageId="15" pageNumber="502" type="discussion">
<paragraph id="0D6A377E0E7DFFF2B9A1387BFAF5EEC8" blockId="15.[151,1437,1034,2033]" pageId="15" pageNumber="502">
<emphasis id="3FA1EB6C0E7DFFF2B9A1387BFEEFEE58" bold="true" box="[199,315,1863,1889]" pageId="15" pageNumber="502">Remarks.</emphasis>
This single specimen from
<quantity id="CA2D9A9B0E7DFFF2BB09387BFCDDEE58" box="[623,777,1863,1889]" metricMagnitude="3" metricUnit="m" metricValue="1.7655" metricValueMax="1.77" metricValueMin="1.761" pageId="15" pageNumber="502" unit="m" value="1765.5" valueMax="1770.0" valueMin="1761.0">17611770 m</quantity>
is different from the specimens of
<taxonomicName id="CAD54CFD0E7DFFF2BDEA387BFAC0EE58" authority="Zhang &amp; Hutchings &amp; Burghardt &amp; Kupriyanova, 2020" authorityName="Zhang &amp; Hutchings &amp; Burghardt &amp; Kupriyanova" authorityYear="2020" box="[1164,1300,1863,1889]" class="Polychaeta" family="Sabellariidae" genus="Phalacrostemma" kingdom="Animalia" order="Sabellida" pageId="15" pageNumber="502" phylum="Annelida" rank="species" species="timoharai" status="sp. nov.">
<emphasis id="3FA1EB6C0E7DFFF2BDEA387BFAC0EE58" box="[1164,1300,1863,1889]" italics="true" pageId="15" pageNumber="502">P. timoharai</emphasis>
</taxonomicName>
<emphasis id="3FA1EB6C0E7DFFF2BC7D387BFA8DEE58" bold="true" box="[1307,1369,1863,1889]" pageId="15" pageNumber="502">
<taxonomicNameLabel id="249256170E7DFFF2BC7D387BFA8DEE58" box="[1307,1369,1863,1889]" pageId="15" pageNumber="502" rank="species">n. sp.</taxonomicNameLabel>
</emphasis>
It has 12 pairs of outer paleae (but many are broken), a pair of inner paleae, two pairs of nuchal hooks and non-retractile lanceolate notopodial chaetae on segments 36 (
<figureCitation id="95EE2BFB0E7DFFF2BBDE38B3FCCCEE90" box="[696,792,1935,1961]" captionStart="FIGURE 10" captionStartId="18.[151,250,1632,1656]" captionTargetBox="[170,1417,181,1608]" captionTargetId="figure-22@18.[170,1417,181,1608]" captionTargetPageId="18" captionText="FIGURE 10. Photos of Phalacrostemma sp. (AM W.50676). A. Anterior end, lateral view. B. Close-up view of buccal cavity with palps, ventral view. C. Close-up view of anterior end, lateral view. D. Nuchal hooks. EG. Close-up view of distal (E), middle (F) and proximal (G) parts of outer paleae. H. Notochaetae from segment 6. Abbreviations: bf, buccal flaps; cac, capillary chaeta; lac, lanceolate chaetae; nec, neuropodial cirri; nh, nuchal hooks; op, outer paleae; pa, palp; s, segment." figureDoi="http://doi.org/10.5281/zenodo.4401061" httpUri="https://zenodo.org/record/4401061/files/figure.png" pageId="15" pageNumber="502">Fig. 10F</figureCitation>
&amp;
<tableCitation id="405702C50E7DFFF2BA5A38B3FC45EE90" box="[828,913,1935,1961]" captionStart="TABLE 3" captionStartId="16.[144,236,637,663]" captionText="TABLE 3. Diagnostic characters of species of Phalacrostemma (modified from Hutchings et al. 2012). NA: no information available." pageId="15" pageNumber="502">Table 3</tableCitation>
). While the specimen clearly represents a new species as also confirmed by molecular results (
<figureCitation id="95EE2BFB0E7DFFF2BBC0388FFD22EEF4" box="[678,758,1971,1997]" captionStart="FIGURE 11" captionStartId="19.[151,250,1037,1061]" captionTargetBox="[218,1125,209,986]" captionTargetId="figure-17@19.[192,1395,181,1013]" captionTargetPageId="19" captionText="FIGURE 11. Bayesian majority rule consensus phylogram of the family Sabellariidae based on the concatenated dataset of COI, 16S, 18S and 28S sequences. Outgroups: Marenzellaria viridis and Lepidonotus squamatus. Numbers next to branches are posterior probabilities obtained from the Bayesian analysis." figureDoi="http://doi.org/10.5281/zenodo.4401063" httpUri="https://zenodo.org/record/4401063/files/figure.png" pageId="15" pageNumber="502">Fig. 11</figureCitation>
), it is too damaged to be described formally as a new species. We have included it here to highlight that an additional species of this genus is present in the Coral Sea.
</paragraph>
</subSubSection>
</treatment>
</document>