treatments-xml/data/03/A9/58/03A9585EFFCEFFDC5D35D6B96735FBE8.xml

<document id="716FEA999A84CCD5280B72EC92F0C724" ID-DOI="10.3853/j.2201-4349.75.2023.1803" ID-ISSN="2201-4349" ID-Zenodo-Dep="10414060" IM.bibliography_approvedBy="carolina" IM.illustrations_approvedBy="carolina" IM.materialsCitations_approvedBy="carolina" IM.metadata_approvedBy="felipe" IM.tables_approvedBy="carolina" IM.taxonomicNames_approvedBy="felipe" IM.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="carolina" checkinTime="1703108469859" checkinUser="felipe" docAuthor="Gunton, Laetitia M., Zhang, William, Kupriyanova, Elena K. &amp; Hutchings, Pat A." docDate="2023" docId="03A9585EFFCEFFDC5D35D6B96735FBE8" docLanguage="en" docName="RecAustMus.75.3.125-154.pdf" docOrigin="Records of the Australian Museum (Rec. Aust. Mus.) 75 (3)" docSource="https://www.mendeley.com/catalogue/e8272d60-8e4e-39f2-8628-298931690154/" docStyle="DocumentStyle:997BA24B490466A2F99594A367FA147F.4:RecAustMus.2019-.journal_article.0cover" docStyleId="997BA24B490466A2F99594A367FA147F" docStyleName="RecAustMus.2019-.journal_article.0cover" docStyleVersion="4" docTitle="Melinna hamulus Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings 2023, sp. nov." docType="treatment" docUuid="04B34BFC-0464-4B96-B935-EC26699040F8" docUuidSource="ZooBank" docVersion="6" lastPageNumber="135" masterDocId="FF902026FFC8FFD65C14D62F666EFFDC" masterDocTitle="New Species of Melinna (Melinnidae, Annelida) from the Australian Abyss with Comments on M. albicincta, M. cristata and M. elisabethae" masterLastPageNumber="154" masterPageNumber="125" pageNumber="131" updateTime="1713300403383" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0">
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<mods:title id="FBAAAC636748EDE6D5537FF37FF8BB5A">New Species of Melinna (Melinnidae, Annelida) from the Australian Abyss with Comments on M. albicincta, M. cristata and M. elisabethae</mods:title>
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<mods:namePart id="46C808E6EF5A6935661F8013259F6931">Gunton, Laetitia M.</mods:namePart>
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<mods:namePart id="13893FB906EA6014EC3384F5EB0EACE1">Zhang, William</mods:namePart>
<mods:affiliation id="6F2A32DB950F3C1700401C559365034B">School of Life and Environmental Sciences, University of Sydney NSW 2006, Australia</mods:affiliation>
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<mods:namePart id="C7C822821861EF60EA37AD4FB71E4A54">Kupriyanova, Elena K.</mods:namePart>
<mods:affiliation id="09C0FE05DF4DB9B4DF8D69521D47E530">Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney NSW 2010, Australia &amp; Department of Biological Sciences, Macquarie University, North Ryde NSW 2109, Australia</mods:affiliation>
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<mods:affiliation id="2034A20CDA9026923D557DCCCA523013">Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney NSW 2010, Australia &amp; Department of Biological Sciences, Macquarie University, North Ryde NSW 2109, Australia</mods:affiliation>
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<mods:date id="C55691D81E86850180A6D6C54E3A7D0D">2023</mods:date>
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<taxonomicName id="4C0092CBFFCEFFD05D35D6B9644AFF69" ID-CoL="BDS6F" authority="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings, 2023" authorityName="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings" authorityYear="2023" box="[289,548,150,181]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="6" pageNumber="131" phylum="Annelida" rank="species" species="hamulus" status="sp. nov.">
<emphasis id="B974355AFFCEFFD05D35D6B9644AFF69" bold="true" box="[289,548,150,181]" italics="true" pageId="6" pageNumber="131">Melinna hamulus</emphasis>
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urn:lsid:zoobank.org:act: 
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<figureCitation id="133BF5CDFFCEFFD05D40D6D867F0FECE" box="[340,414,247,274]" captionStart="Figure 1" captionStartId="1.[300,368,998,1020]" captionTargetBox="[305,1235,161,982]" captionTargetId="figure-252@1.[121,1421,151,986]" captionTargetPageId="1" captionText="Figure 1. Map of southeastern Australia showing type locality (black dot) of the species Melinna hamulus sp.nov.collected during the RV Investigator voyage “Sampling theAbyss” (IN2017_V03), operation 030. Green polygons represent Australian Marine Parks." figureDoi="http://doi.org/10.5281/zenodo.10982358" httpUri="https://zenodo.org/record/10982358/files/figure.png" pageId="6" pageNumber="131">Figs 1</figureCitation>
, 
<figureCitation id="133BF5CDFFCEFFD05DB9D6D867B3FECE" box="[429,477,247,274]" captionStart-0="Figure 3" captionStart-1="Figure 4" captionStart-2="Figure 5" captionStartId-0="7.[121,189,1844,1866]" captionStartId-1="8.[167,235,1950,1972]" captionStartId-2="9.[121,189,1946,1968]" captionTargetBox-0="[218,1321,151,1831]" captionTargetBox-1="[172,1461,151,1934]" captionTargetBox-2="[127,1416,151,1934]" captionTargetId-0="figure-9@7.[218,1321,151,1831]" captionTargetId-1="figure-12@8.[172,1461,151,1934]" captionTargetId-2="figure-10@9.[127,1416,151,1934]" captionTargetPageId-0="7" captionTargetPageId-1="8" captionTargetPageId-2="9" captionText-0="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." captionText-1="Figure 4. SEM images of Melinna hamulus sp. nov. (AM W.53257.001). (A) Ventral view of anterior end. (B) Ventral view of lips. (C) Lateral view of anterior notopodia. (D) Anterior notopodia. (E) Surface of notochaetae. (F) Lateral view of anterior end. (G) Dorsal view of anterior end. (H) Dorsal hook. (I) Lateral view of anterior end including dorsal hooks. Scale bars: A, C, F, G, I, 1 mm; B, H, 500 μm; D, 200 μm; E, 20 μm. Abbreviations: dm, dorsal membrane; dh, dorsal hook; 2t, two tiers of notochaetae." captionText-2="Figure 5. SEM of Melinna hamulus sp. nov. (AM W.53257.001). (A) Neurochaeta of chaetiger 10. (B) Neurochaetae of chaetiger 13. (C) Neurochaetae of chaetiger 13. (D) Notochaetae of chaetiger 13. (E) Anterior abdominal neurochaetae. (F) Close­up view of anterior abdominal neurochaetae. (G) Posterior abdominal neurochaetae. (H) Close­up view of posterior abdominal neurochaetae. Scale bars: A, C, F, H, 10 μm; B, 20 μm; D, 200 μm; E, G, 50 μm. Abbreviations: d, dentition; t, two tiers of notochaetae." figureDoi-0="http://doi.org/10.5281/zenodo.10414066" figureDoi-1="http://doi.org/10.5281/zenodo.10414068" figureDoi-2="http://doi.org/10.5281/zenodo.10414070" httpUri-0="https://zenodo.org/record/10414066/files/figure.png" httpUri-1="https://zenodo.org/record/10414068/files/figure.png" httpUri-2="https://zenodo.org/record/10414070/files/figure.png" pageId="6" pageNumber="131">3–5</figureCitation>
; 
<tableCitation id="C682DCF3FFCEFFD05DFED6D8643EFECE" box="[490,592,247,274]" captionStart="Table 4" captionStartId="22.[166,229,171,195]" captionTargetPageId="22" captionText="Table 4. List of described Melinna species with type localities, depths, and coordinates (decimal degrees)." pageId="6" pageNumber="131">Tables 4</tableCitation>
, 
<tableCitation id="C682DCF3FFCEFFD05E4AD6D86403FECE" box="[606,621,247,274]" captionStart="Table 5" captionStartId="23.[136,192,140,161]" captionText="Table 5. Diagnostic characters of Melinna species. Column headings are abbreviated as follows: corrected, numbering of anterior segments corrected; fusion, numbers of branchiae and degree of fusion; projections, dorsal membrane on segments 5—numbers of projections; neurochaetae, numbers of segments, numbers of abdominal segments.*Numbering of segments as stated in original paper indicating lack of recognition of achaetous segments," pageId="6" pageNumber="131">5</tableCitation>
</paragraph>
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<taxonomicName id="4C0092CBFFCEFFD05CD1D7316413FEE8" authority="Gunton et al., 2021: 63" authorityName="Gunton" authorityPageNumber="63" authorityYear="2021" box="[197,637,286,308]" class="Polychaeta" family="Melinnidae" genus="Melinna" isUncertain="true" kingdom="Animalia" order="Terebellida" pageId="6" pageNumber="131" phylum="Annelida" rank="species" species="armandia">
<emphasis id="B974355AFFCEFFD05CD1D731677BFEEF" box="[197,277,286,307]" italics="true" pageId="6" pageNumber="131">Melinna</emphasis>
cf. 
<emphasis id="B974355AFFCEFFD05D2DD73167F8FEEF" box="[313,406,286,307]" italics="true" pageId="6" pageNumber="131">armandia</emphasis>
<bibRefCitation id="EF9194B9FFCEFFD05D88D7316413FEE8" author="Gunton, L. M. &amp; E. K. Kupriyanova &amp; T. Alvestad &amp; L. Avery &amp; J. A. Blake &amp; O. Biriukova &amp; M. Boggemann &amp; P. Borisova &amp; N. Budaeva &amp; I. Burghardt &amp; M. Capa &amp; M. N. Georgieva &amp; C. J. Glasby &amp; P. - W. Hsueh &amp; P. Hutchings &amp; N. Jimi &amp; J. A. Kongsrud &amp; J. Langeneck &amp; K. Meissner &amp; A. Murray &amp; M. Nikolic &amp; H. Paxton &amp; D. A. Ramos &amp; A. Schulze &amp; R. Sobczyk &amp; C. Watson &amp; H. Wiklund &amp; R. S. Wilson &amp; A. Zhadan &amp; J. Zhang" box="[412,637,286,308]" pageId="6" pageNumber="131" pagination="1 - 198" refId="ref13069" refString="Gunton, L. M., E. K. Kupriyanova, T. Alvestad, L. Avery, J. A. Blake, O. Biriukova, M. Boggemann, P. Borisova, N. Budaeva, I. Burghardt, M. Capa, M. N. Georgieva, C. J. Glasby, P. - W. Hsueh, P. Hutchings, N. Jimi, J. A. Kongsrud, J. Langeneck, K. Meissner, A. Murray, M. Nikolic, H. Paxton, D. A. Ramos, A. Schulze, R. Sobczyk, C. Watson, H. Wiklund, R. S. Wilson, A. Zhadan, and J. Zhang. 2021. Annelids of the eastern Australian abyss collected by the 2017 RV ' Investigator' voyage. Zookeys 1020: 1 - 198. https: // doi. org / 10.3897 / zookeys. 1020.57921" type="journal article" year="2021">
Gunton 
<emphasis id="B974355AFFCEFFD05DFED731644EFEEF" box="[490,544,286,307]" italics="true" pageId="6" pageNumber="131">et al.,</emphasis>
2021: 63
</bibRefCitation>
</taxonomicName>
, fig. 4D,d. 
<emphasis id="B974355AFFCEFFD05CF7D7166765FE92" box="[227,267,313,334]" italics="true" pageId="6" pageNumber="131">Non</emphasis>
<bibRefCitation id="EF9194B9FFCEFFD05D05D71767C2FE92" author="McIntosh, W. C." box="[273,428,312,334]" pageId="6" pageNumber="131" pagination="1 - 554" refId="ref13959" refString="McIntosh, W. C. 1885. Report on the Annelida Polychaeta collected by H. M. S. Challenger during the years 1873 - 1876. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76. Zoology (12) (part 34): i-xxxvi, 1 - 554." type="journal article" year="1885">McIntosh, 1885</bibRefCitation>
.
</paragraph>
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<materialsCitation id="3B68E315FFCEFFD05CB2D773644CFDF8" collectingDate="2017-05-23" collectionCode="AM" country="Australia" county="Australian Museum" elevation="4197" latitude="-39.496113" location="Beam Trawl" longLatPrecision="19" longitude="149.59805" municipality="Bass Strait" pageId="6" pageNumber="131" specimenCode="V03" specimenCount="2" stateProvince="Tasmania" typeStatus="holotype">
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<typeStatus id="54BB57EAFFCEFFD05CB2D7736764FEA8" box="[166,266,348,372]" pageId="6" pageNumber="131" type="holotype">Holotype</typeStatus>
</emphasis>
. 
<collectingCounty id="62DE91C4FFCEFFD05D01D773678EFEAF" box="[277,480,348,372]" pageId="6" pageNumber="131">Australian Museum</collectingCounty>
(
<collectionCode id="ED11718DFFCEFFD05DFFD7736476FEA8" box="[491,536,348,372]" country="Australia" name="Australian Museum" pageId="6" pageNumber="131" type="Museum">AM</collectionCode>
) W.50352, IN2017_ 
<specimenCode id="DBA64133FFCEFFD05EFED7736578FEA8" box="[746,790,348,372]" collectionCode="V" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="6" pageNumber="131" type="Museum">V03</specimenCode>
, OPS 030, 
<collectingCountry id="F317A9D8FFCEFFD05D08D75667EAFE4D" box="[284,388,377,401]" name="Australia" pageId="6" pageNumber="131">Australia</collectingCountry>
, 
<collectingMunicipality id="6BDB7332FFCEFFD05D87D7556463FE4D" box="[403,525,377,401]" pageId="6" pageNumber="131">Bass Strait</collectingMunicipality>
between Tasmania and Victoria, 
<location id="8EDFBF93FFCEFFD05D13D7B867E6FE73" LSID="urn:lsid:plazi:treatment:03A9585EFFCEFFDC5D35D6B96735FBE8:8EDFBF93FFCEFFD05D13D7B867E6FE73" box="[263,392,407,431]" country="Australia" county="Australian Museum" latitude="-39.496113" longLatPrecision="19" longitude="149.59805" municipality="Bass Strait" name="Beam Trawl" pageId="6" pageNumber="131" stateProvince="Tasmania">Beam Trawl</location>
(start: 
<geoCoordinate id="EE348F8FFFCEFFD05DC4D7B86426FE73" box="[464,584,407,431]" degrees="39" direction="south" minutes="33" orientation="latitude" pageId="6" pageNumber="131" precision="15" seconds="07" value="-39.551945">39°33'07&quot;S</geoCoordinate>
<geoCoordinate id="EE348F8FFFCEFFD05E59D7B864BBFE73" box="[589,725,407,431]" degrees="149" direction="east" minutes="33" orientation="longitude" pageId="6" pageNumber="131" precision="15" seconds="11" value="149.55305">149°33'11&quot;E</geoCoordinate>
, 
<quantity id="4CF844ADFFCEFFD05ECBD7B866D3FE17" metricMagnitude="3" metricUnit="m" metricValue="4.197" pageId="6" pageNumber="131" unit="m" value="4197.0">4,197 m</quantity>
, end: 39°29'46&quot;S 149°35'53&quot;E, 4,133 m), 
<date id="FFBECF88FFCEFFD05E97D79B657BFE10" box="[643,789,436,460]" pageId="6" pageNumber="131" value="2017-05-23">
<collectingDate id="EFFA3660FFCEFFD05E97D79B657BFE10" box="[643,789,436,460]" pageId="6" pageNumber="131" value="2017-05-23">23 May 2017</collectingDate>
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; specimen posteriorly complete, although body wall damaged in a few places, 45 mm in length, 4 mm max width in thorax, muddy tube present, formalin fixed.
</materialsCitation>
<materialsCitation id="3B68E315FFCEFFD05E32D4236421FD6B" collectingDate="2017-05-23" collectionCode="AM" country="Australia" county="Australian Museum" elevation="4197" latitude="-39.496113" location="Beam Trawl" longLatPrecision="19" longitude="149.59805" municipality="Bass Strait" pageId="6" pageNumber="131" specimenCode="V03" specimenCount="2" stateProvince="Tasmania" typeStatus="holotype">
All paratypes collected from the same location as holotype. 
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<typeStatus id="54BB57EAFFCEFFD05E07D40664ECFD9D" box="[531,642,553,577]" pageId="6" pageNumber="131" type="paratype">Paratypes</typeStatus>
</emphasis>
. 
<collectionCode id="ED11718DFFCEFFD05E99D40564D6FD9E" box="[653,696,554,578]" country="Australia" name="Australian Museum" pageId="6" pageNumber="131" type="Museum">AM</collectionCode>
W.50366 (
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), fixed in formalin, pale yellow lacking any pigmentation, damaged in 2 pieces, anterior end 
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in length, 
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maximum width, with 14 thoracic neuropodia, plus posterior fragment to pygidium
</materialsCitation>
. 
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W.53257 (
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) fixed in formalin, 
<specimenCount id="9D0622C1FFCEFFD05DCDD4936409FD08" box="[473,615,700,724]" count="1" pageId="6" pageNumber="131" type="generic">one specimen</specimenCount>
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in length, plus tube, anterior portion covered in fine mud, posterior part flimsy chitinous tube, another 
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mounted for 
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<collectionCode id="ED11718DFFCEFFD05CB2D53B66BFFCF0" box="[166,209,788,812]" country="Australia" name="Australian Museum" pageId="6" pageNumber="131" type="Museum">AM</collectionCode>
W.53257.001 posteriorly incomplete, 
<quantity id="4CF844ADFFCEFFD05E72D53B64C1FCF7" box="[614,687,788,812]" metricMagnitude="-2" metricUnit="m" metricValue="2.5" pageId="6" pageNumber="131" unit="mm" value="25.0">25 mm</quantity>
in length, 
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maximum width
</materialsCitation>
. 
<materialsCitation id="3B68E315FFCEFFD05DBCD51D6789FC7D" collectionCode="AM" country="Australia" pageId="6" pageNumber="131" specimenCount="2" stateProvince="Tasmania" typeStatus="paratype">
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W.50351 (
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), fixed in formalin, anterior fragment 
<quantity id="4CF844ADFFCEFFD05DF5D5606444FCBA" box="[481,554,847,871]" metricMagnitude="-2" metricUnit="m" metricValue="1.2" pageId="6" pageNumber="131" unit="mm" value="12.0">12 mm</quantity>
in length, thorax 
<quantity id="4CF844ADFFCEFFD05ECAD5606577FCBA" box="[734,793,847,871]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="6" pageNumber="131" unit="mm" value="3.0">3 mm</quantity>
in width, plus posterior fragment, anterior fragment 
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in length, plus tube fragments
</materialsCitation>
. 
<materialsCitation id="3B68E315FFCEFFD05DE5D5A5671EFC25" collectionCode="AM" country="Australia" pageId="6" pageNumber="131" specimenCount="1" stateProvince="Tasmania" typeStatus="paratype">
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W.50732 (
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), fixed in 95% ethanol, 
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in length, thorax complete 
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max width, abdomen damaged from tissue collection for molecular analysis
</materialsCitation>
. 
<materialsCitation id="3B68E315FFCEFFD05D6CD5CD6714FB8D" collectionCode="AM" country="Australia" pageId="6" pageNumber="131" specimenCount="1" stateProvince="Tasmania" typeStatus="paratype">
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W.53871 (
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), fixed in 95 % ethanol, damaged posterior thorax, max width 
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and anterior abdomen with posterior abdomen intact with 40 + segments, with tube
</materialsCitation>
. 
<materialsCitation id="3B68E315FFCEFFD05D95D21567DFFB50" collectionCode="AM" country="Australia" pageId="6" pageNumber="131" specimenCount="1" stateProvince="Tasmania" typeStatus="paratype">
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W.53872 (
<specimenCount id="9D0622C1FFCEFFD05E35D21664F4FB8D" box="[545,666,1081,1105]" count="1" pageId="6" pageNumber="131" type="generic">1 specimen</specimenCount>
), fixed in 95 % ethanol, sequenced, anterior thorax, max width 
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, l35+ abdominal segments
</materialsCitation>
. 
<materialsCitation id="3B68E315FFCEFFD05DA3D25B64EFFB1B" collectionCode="AM" country="Australia" pageId="6" pageNumber="131" specimenCount="1" stateProvince="Tasmania" typeStatus="paratype">
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W.50353 (
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), thorax max width 
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plus separated abdomen, abdomen damaged from tissue collection for molecular analysis
</materialsCitation>
. 
<materialsCitation id="3B68E315FFCEFFD05E9DD28067BFFAC2" collectionCode="AM" country="Australia" pageId="6" pageNumber="131" specimenCount="1" stateProvince="Tasmania" typeStatus="paratype">
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W.50382 (
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), fixed in 95% ethanol, posteriorly incomplete, abdomen damaged from tissue collection for molecular analysis, max width 
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</materialsCitation>
. 
<materialsCitation id="3B68E315FFCEFFD05DC8D32866BDFA6D" collectionCode="AM" country="Australia" pageId="6" pageNumber="131" specimenCount="3" stateProvince="Tasmania" typeStatus="paratype">
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W.50354 (
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), fixed in formalin, 
<specimenCount id="9D0622C1FFCEFFD05D7AD30B6787FAE0" box="[366,489,1316,1340]" count="1" pageId="6" pageNumber="131" type="generic">1 specimen</specimenCount>
complete with regenerating posterior end, but mid body damaged, 
<quantity id="4CF844ADFFCEFFD05E5ED36E64FBFA85" box="[586,661,1345,1369]" metricMagnitude="-2" metricUnit="m" metricValue="3.0" pageId="6" pageNumber="131" unit="mm" value="30.0">30 mm</quantity>
in length, 
<quantity id="4CF844ADFFCEFFD05F18D36E66A1FAAA" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="6" pageNumber="131" unit="mm" value="3.0">3 mm</quantity>
max width, tube present with damaged posterior end, other incomplete, only thorax 
<quantity id="4CF844ADFFCEFFD05DF2D353644DFA4F" box="[486,547,1404,1427]" metricMagnitude="-3" metricUnit="m" metricValue="7.0" pageId="6" pageNumber="131" unit="mm" value="7.0">7 mm</quantity>
in length, max width 
<quantity id="4CF844ADFFCEFFD05F18D35366BDFA6D" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="6" pageNumber="131" unit="mm" value="3.0">3 mm</quantity>
</materialsCitation>
. 
<materialsCitation id="3B68E315FFCEFFD05CC9D3B5640EFA13" collectionCode="AM" country="Australia" pageId="6" pageNumber="131" specimenCount="1" stateProvince="Tasmania" typeStatus="paratype">
<collectionCode id="ED11718DFFCEFFD05CC9D3B56766FA6E" box="[221,264,1434,1458]" country="Australia" name="Australian Museum" pageId="6" pageNumber="131" type="Museum">AM</collectionCode>
W.50383 (
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), fixed in formalin, thorax only, 
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in length, 
<quantity id="4CF844ADFFCEFFD05DB0D398678CFA12" box="[420,482,1463,1487]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="6" pageNumber="131" unit="mm" value="4.0">4 mm</quantity>
max width
</materialsCitation>
. 
<materialsCitation id="3B68E315FFCEFFD05E7ED3986762F9FB" collectionCode="AM" country="Australia" pageId="6" pageNumber="131" specimenCount="1" stateProvince="Tasmania" typeStatus="paratype">
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W.53880 (
<specimenCount id="9D0622C1FFCEFFD05F1AD3986760FA30" count="1" pageId="6" pageNumber="131" type="generic">1 specimen</specimenCount>
), fixed in formalin, in two pieces, anterior part 
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in length, max width 
<quantity id="4CF844ADFFCEFFD05DAFD3DE6795F9D5" box="[443,507,1521,1545]" metricMagnitude="-3" metricUnit="m" metricValue="4.0" pageId="6" pageNumber="131" unit="mm" value="4.0">4 mm</quantity>
, plus posterior part 
<quantity id="4CF844ADFFCEFFD05EDBD3DE6577F9D5" box="[719,793,1521,1545]" metricMagnitude="-2" metricUnit="m" metricValue="1.3" pageId="6" pageNumber="131" unit="mm" value="13.0">13 mm</quantity>
in length
</materialsCitation>
. 
<materialsCitation id="3B68E315FFCEFFD05D0CD020673AF9BD" collectionCode="AM" country="Australia" pageId="6" pageNumber="131" specimenCount="1" stateProvince="Tasmania" typeStatus="paratype">
<collectionCode id="ED11718DFFCEFFD05D0CD020672DF9FB" box="[280,323,1551,1575]" country="Australia" name="Australian Museum" pageId="6" pageNumber="131" type="Museum">AM</collectionCode>
W.53881 (
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), fixed in formalin, posteriorly incomplete, 
<quantity id="4CF844ADFFCEFFD05D8ED003678CF99F" box="[410,482,1580,1604]" metricMagnitude="-2" metricUnit="m" metricValue="1.2" pageId="6" pageNumber="131" unit="mm" value="12.0">12 mm</quantity>
in length, max width of thorax 
<quantity id="4CF844ADFFCEFFD05CB2D0666688F9BD" box="[166,230,1609,1633]" metricMagnitude="-3" metricUnit="m" metricValue="3.0" pageId="6" pageNumber="131" unit="mm" value="3.0">3 mm</quantity>
, plus tube
</materialsCitation>
.
</paragraph>
<paragraph id="8BBFE948FFCEFFD05CB2D05967E6F8D8" blockId="6.[166,794,1654,1796]" pageId="6" pageNumber="131">
<emphasis id="B974355AFFCEFFD05CB2D05967DBF952" bold="true" box="[166,437,1654,1678]" pageId="6" pageNumber="131">Other material examined</emphasis>
. 
<taxonomicName id="4C0092CBFFCEFFD05DABD0586411F953" authorityName="Mackie &amp; Pleijel" authorityYear="1995" box="[447,639,1655,1679]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="6" pageNumber="131" phylum="Annelida" rank="species" species="albicincta">
<emphasis id="B974355AFFCEFFD05DABD0586411F953" box="[447,639,1655,1679]" italics="true" pageId="6" pageNumber="131">Melinna albicincta</emphasis>
</taxonomicName>
(
<collectionCode id="ED11718DFFCEFFD05E9ED05864B1F953" box="[650,735,1655,1679]" country="0" httpUri="http://grbio.org/cool/idd9-qjfy" name="National Museum of Wales" pageId="6" pageNumber="131">NMWZ</collectionCode>
1989­ 125­22, 
<collectionCode id="ED11718DFFCEFFD05CEBD0BB673BF970" box="[255,341,1684,1708]" country="0" httpUri="http://grbio.org/cool/idd9-qjfy" name="National Museum of Wales" pageId="6" pageNumber="131">NMWZ</collectionCode>
1989­125­26); 
<taxonomicName id="4C0092CBFFCEFFD05DE7D0BA6409F970" authorityName="M. Sars" authorityYear="1851" box="[499,615,1685,1708]" class="Polychaeta" family="Ampharetidae" genus="Sabellides" higherTaxonomySource="GBIF" kingdom="Animalia" order="Terebellida" pageId="6" pageNumber="131" phylum="Annelida" rank="species" species="cristata">
<emphasis id="B974355AFFCEFFD05DE7D0BA6409F970" box="[499,615,1685,1708]" italics="true" pageId="6" pageNumber="131">M. cristata</emphasis>
</taxonomicName>
(
<collectionCode id="ED11718DFFCEFFD05E63D0BB64CDF970" box="[631,675,1684,1708]" country="Australia" name="Australian Museum" pageId="6" pageNumber="131" type="Museum">AM</collectionCode>
W.21791); 
<taxonomicName id="4C0092CBFFCEFFD05CB2D09D6728F915" authorityName="McIntosh" authorityYear="1914" box="[166,326,1713,1737]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="6" pageNumber="131" phylum="Annelida" rank="species" species="elisabethae">
<emphasis id="B974355AFFCEFFD05CB2D09D6728F915" box="[166,326,1713,1737]" italics="true" pageId="6" pageNumber="131">M. elisabethae</emphasis>
</taxonomicName>
(
<collectionCode id="ED11718DFFCEFFD05D4CD09E67E8F915" box="[344,390,1713,1737]" country="Australia" name="Australian Museum" pageId="6" pageNumber="131" type="Museum">AM</collectionCode>
.W.21793) for comparative purposes, details given for each under the expanded descriptions of each of these species.
</paragraph>
</subSubSection>
<subSubSection id="C31ABAC3FFCEFFD05D82D13865D4F809" pageId="6" pageNumber="131" type="description">
<paragraph id="8BBFE948FFCEFFD05D82D1386444F8ED" blockId="6.[406,554,1815,1841]" box="[406,554,1815,1841]" pageId="6" pageNumber="131">
<emphasis id="B974355AFFCEFFD05D82D1386444F8ED" bold="true" box="[406,554,1815,1841]" pageId="6" pageNumber="131">Description</emphasis>
</paragraph>
<paragraph id="8BBFE948FFCEFFD05CB2D16863D2F95B" blockId="6.[166,794,1863,2004]" lastBlockId="6.[838,1468,151,1672]" pageId="6" pageNumber="131">
Description based on 
<typeStatus id="54BB57EAFFCEFFD05DB6D168646DF883" box="[418,515,1863,1887]" pageId="6" pageNumber="131" type="holotype">holotype</typeStatus>
with variation observed among 
<typeStatus id="54BB57EAFFCEFFD05CECD14B6732F8A0" box="[248,348,1892,1916]" pageId="6" pageNumber="131" type="paratype">paratypes</typeStatus>
indicated. Prostomium with well­defined anterior and posterior parts, separated by pair of transverse nuchal slits (
<figureCitation id="133BF5CDFFCEFFD05D3DD1B06718F86B" box="[297,374,1951,1975]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Fig. 3F</figureCitation>
), anterior part distally trilobed, followed by achaetous segment forming a glandular collar dorsally with smooth margin (
<figureCitation id="133BF5CDFFCEFFD05821D6B862CCFF6C" box="[1077,1186,151,176]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Fig. 3B,F</figureCitation>
). Buccal tentacles almost completely withdrawn with tips exposed (
<figureCitation id="133BF5CDFFCEFFD05904D69A630AFF11" box="[1296,1380,181,205]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Figs 3F</figureCitation>
, 
<figureCitation id="133BF5CDFFCEFFD05967D69A63C1FF11" box="[1395,1455,181,205]" captionStart="Figure 4" captionStartId="8.[167,235,1950,1972]" captionTargetBox="[172,1461,151,1934]" captionTargetId="figure-12@8.[172,1461,151,1934]" captionTargetPageId="8" captionText="Figure 4. SEM images of Melinna hamulus sp. nov. (AM W.53257.001). (A) Ventral view of anterior end. (B) Ventral view of lips. (C) Lateral view of anterior notopodia. (D) Anterior notopodia. (E) Surface of notochaetae. (F) Lateral view of anterior end. (G) Dorsal view of anterior end. (H) Dorsal hook. (I) Lateral view of anterior end including dorsal hooks. Scale bars: A, C, F, G, I, 1 mm; B, H, 500 μm; D, 200 μm; E, 20 μm. Abbreviations: dm, dorsal membrane; dh, dorsal hook; 2t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414068" httpUri="https://zenodo.org/record/10414068/files/figure.png" pageId="6" pageNumber="131">4A,B</figureCitation>
). Lateral wings of anterior body between prostomium and segment 5 highly arched (
<figureCitation id="133BF5CDFFCEFFD0584CD6C062B3FED4" box="[1112,1245,239,264]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Fig. 3A,B,C</figureCitation>
). First four segments glandular, subsequent seven segments with discrete ventral glandular shields (
<figureCitation id="133BF5CDFFCEFFD05805D7056202FE9E" box="[1041,1132,298,322]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Figs 3C</figureCitation>
, 
<figureCitation id="133BF5CDFFCEFFD0586FD70562D7FE9E" box="[1147,1209,298,322]" captionStart="Figure 4" captionStartId="8.[167,235,1950,1972]" captionTargetBox="[172,1461,151,1934]" captionTargetId="figure-12@8.[172,1461,151,1934]" captionTargetPageId="8" captionText="Figure 4. SEM images of Melinna hamulus sp. nov. (AM W.53257.001). (A) Ventral view of anterior end. (B) Ventral view of lips. (C) Lateral view of anterior notopodia. (D) Anterior notopodia. (E) Surface of notochaetae. (F) Lateral view of anterior end. (G) Dorsal view of anterior end. (H) Dorsal hook. (I) Lateral view of anterior end including dorsal hooks. Scale bars: A, C, F, G, I, 1 mm; B, H, 500 μm; D, 200 μm; E, 20 μm. Abbreviations: dm, dorsal membrane; dh, dorsal hook; 2t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414068" httpUri="https://zenodo.org/record/10414068/files/figure.png" pageId="6" pageNumber="131">4A,C</figureCitation>
). Four pairs of smooth branchiae on segments 2–5, although appearing to arise on a dorsal ridge on segments 2 and 3, arranged two in front and two behind. Completely separated from each other. All branchia similar in both width and length, tapering to fine tips distally and having slightly swollen bases with slightly crenulated surfaces (
<figureCitation id="133BF5CDFFCEFFD05834D7F562F9FE2E" box="[1056,1175,474,498]" captionStart="Figure 4" captionStartId="8.[167,235,1950,1972]" captionTargetBox="[172,1461,151,1934]" captionTargetId="figure-12@8.[172,1461,151,1934]" captionTargetPageId="8" captionText="Figure 4. SEM images of Melinna hamulus sp. nov. (AM W.53257.001). (A) Ventral view of anterior end. (B) Ventral view of lips. (C) Lateral view of anterior notopodia. (D) Anterior notopodia. (E) Surface of notochaetae. (F) Lateral view of anterior end. (G) Dorsal view of anterior end. (H) Dorsal hook. (I) Lateral view of anterior end including dorsal hooks. Scale bars: A, C, F, G, I, 1 mm; B, H, 500 μm; D, 200 μm; E, 20 μm. Abbreviations: dm, dorsal membrane; dh, dorsal hook; 2t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414068" httpUri="https://zenodo.org/record/10414068/files/figure.png" pageId="6" pageNumber="131">Fig. 4F,G,I</figureCitation>
). Branchia circular in cross section. Incomplete dorsal membranous fold on segment 4 (
<figureCitation id="133BF5CDFFCEFFD05F5BD43A65D0FDF1" box="[847,958,533,557]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Fig. 3B,C</figureCitation>
). Postbranchial dorsal membrane with 13 (17) triangular lobes or projections, all similar in size, except for the slightly larger middle one, some bilobed, and middle larger one with small lateral lobes at base so appearing as tricorn (
<figureCitation id="133BF5CDFFCEFFD05999D4426511FD7E" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Figs 3A,B</figureCitation>
, 
<figureCitation id="133BF5CDFFCEFFD05F93D4A565D2FD7E" box="[903,956,650,674]" captionStart="Figure 4" captionStartId="8.[167,235,1950,1972]" captionTargetBox="[172,1461,151,1934]" captionTargetId="figure-12@8.[172,1461,151,1934]" captionTargetPageId="8" captionText="Figure 4. SEM images of Melinna hamulus sp. nov. (AM W.53257.001). (A) Ventral view of anterior end. (B) Ventral view of lips. (C) Lateral view of anterior notopodia. (D) Anterior notopodia. (E) Surface of notochaetae. (F) Lateral view of anterior end. (G) Dorsal view of anterior end. (H) Dorsal hook. (I) Lateral view of anterior end including dorsal hooks. Scale bars: A, C, F, G, I, 1 mm; B, H, 500 μm; D, 200 μm; E, 20 μm. Abbreviations: dm, dorsal membrane; dh, dorsal hook; 2t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414068" httpUri="https://zenodo.org/record/10414068/files/figure.png" pageId="6" pageNumber="131">4F,G</figureCitation>
).Pair of short dorsal curved hooks, pale yellow with darker slightly curved pointed tip, base triangular (one missing on 
<typeStatus id="54BB57EAFFCEFFD05F7CD4EA65A8FD01" box="[872,966,709,733]" pageId="6" pageNumber="131" type="holotype">holotype</typeStatus>
), no canal inside tooth visible (
<figureCitation id="133BF5CDFFCEFFD0591DD4EA631FFD01" box="[1289,1393,709,733]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Figs 3B,b</figureCitation>
, 
<figureCitation id="133BF5CDFFCEFFD05969D4EA63C0FD01" box="[1405,1454,709,733]" captionStart="Figure 4" captionStartId="8.[167,235,1950,1972]" captionTargetBox="[172,1461,151,1934]" captionTargetId="figure-12@8.[172,1461,151,1934]" captionTargetPageId="8" captionText="Figure 4. SEM images of Melinna hamulus sp. nov. (AM W.53257.001). (A) Ventral view of anterior end. (B) Ventral view of lips. (C) Lateral view of anterior notopodia. (D) Anterior notopodia. (E) Surface of notochaetae. (F) Lateral view of anterior end. (G) Dorsal view of anterior end. (H) Dorsal hook. (I) Lateral view of anterior end including dorsal hooks. Scale bars: A, C, F, G, I, 1 mm; B, H, 500 μm; D, 200 μm; E, 20 μm. Abbreviations: dm, dorsal membrane; dh, dorsal hook; 2t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414068" httpUri="https://zenodo.org/record/10414068/files/figure.png" pageId="6" pageNumber="131">4H,I</figureCitation>
). Segmentation visible dorsally in postbranchial area. No visible nephridial papillae.Capillary notochaetae present in 23 thoracic chaetigers starting from segment 4. First notopodia (segment 4) very small. Following notopodia inserted more laterally (
<figureCitation id="133BF5CDFFCEFFD05F5AD57865C9FCAC" box="[846,935,855,880]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Figs 3A</figureCitation>
, 
<figureCitation id="133BF5CDFFCEFFD05FA0D57765B8FCAC" box="[948,982,856,880]" captionStart="Figure 4" captionStartId="8.[167,235,1950,1972]" captionTargetBox="[172,1461,151,1934]" captionTargetId="figure-12@8.[172,1461,151,1934]" captionTargetPageId="8" captionText="Figure 4. SEM images of Melinna hamulus sp. nov. (AM W.53257.001). (A) Ventral view of anterior end. (B) Ventral view of lips. (C) Lateral view of anterior notopodia. (D) Anterior notopodia. (E) Surface of notochaetae. (F) Lateral view of anterior end. (G) Dorsal view of anterior end. (H) Dorsal hook. (I) Lateral view of anterior end including dorsal hooks. Scale bars: A, C, F, G, I, 1 mm; B, H, 500 μm; D, 200 μm; E, 20 μm. Abbreviations: dm, dorsal membrane; dh, dorsal hook; 2t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414068" httpUri="https://zenodo.org/record/10414068/files/figure.png" pageId="6" pageNumber="131">4C</figureCitation>
), becoming progressively larger and reaching maximum size by segment 8 (
<figureCitation id="133BF5CDFFCEFFD05862D55A62A8FC51" box="[1142,1222,885,909]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Fig. 3B</figureCitation>
). Subsequent notopodia (from segment 8 onwards) continuing for 15 segments. Notopodia well­developed, each bearing paired notopodial lobes and long golden capillary notochaetae (
<figureCitation id="133BF5CDFFCEFFD05902D5E263ECFC39" box="[1302,1410,973,997]" captionStart="Figure 4" captionStartId="8.[167,235,1950,1972]" captionTargetBox="[172,1461,151,1934]" captionTargetId="figure-12@8.[172,1461,151,1934]" captionTargetPageId="8" captionText="Figure 4. SEM images of Melinna hamulus sp. nov. (AM W.53257.001). (A) Ventral view of anterior end. (B) Ventral view of lips. (C) Lateral view of anterior notopodia. (D) Anterior notopodia. (E) Surface of notochaetae. (F) Lateral view of anterior end. (G) Dorsal view of anterior end. (H) Dorsal hook. (I) Lateral view of anterior end including dorsal hooks. Scale bars: A, C, F, G, I, 1 mm; B, H, 500 μm; D, 200 μm; E, 20 μm. Abbreviations: dm, dorsal membrane; dh, dorsal hook; 2t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414068" httpUri="https://zenodo.org/record/10414068/files/figure.png" pageId="6" pageNumber="131">Figs 4D,E</figureCitation>
, 
<figureCitation id="133BF5CDFFCEFFD0599FD5E263C1FC39" box="[1419,1455,973,997]" captionStart="Figure 5" captionStartId="9.[121,189,1946,1968]" captionTargetBox="[127,1416,151,1934]" captionTargetId="figure-10@9.[127,1416,151,1934]" captionTargetPageId="9" captionText="Figure 5. SEM of Melinna hamulus sp. nov. (AM W.53257.001). (A) Neurochaeta of chaetiger 10. (B) Neurochaetae of chaetiger 13. (C) Neurochaetae of chaetiger 13. (D) Notochaetae of chaetiger 13. (E) Anterior abdominal neurochaetae. (F) Close­up view of anterior abdominal neurochaetae. (G) Posterior abdominal neurochaetae. (H) Close­up view of posterior abdominal neurochaetae. Scale bars: A, C, F, H, 10 μm; B, 20 μm; D, 200 μm; E, G, 50 μm. Abbreviations: d, dentition; t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414070" httpUri="https://zenodo.org/record/10414070/files/figure.png" pageId="6" pageNumber="131">5D</figureCitation>
). Notochaetae arranged in two tiers of capillary chaetae (
<figureCitation id="133BF5CDFFCEFFD05998D5C56511FBFC" captionStart="Figure 4" captionStartId="8.[167,235,1950,1972]" captionTargetBox="[172,1461,151,1934]" captionTargetId="figure-12@8.[172,1461,151,1934]" captionTargetPageId="8" captionText="Figure 4. SEM images of Melinna hamulus sp. nov. (AM W.53257.001). (A) Ventral view of anterior end. (B) Ventral view of lips. (C) Lateral view of anterior notopodia. (D) Anterior notopodia. (E) Surface of notochaetae. (F) Lateral view of anterior end. (G) Dorsal view of anterior end. (H) Dorsal hook. (I) Lateral view of anterior end including dorsal hooks. Scale bars: A, C, F, G, I, 1 mm; B, H, 500 μm; D, 200 μm; E, 20 μm. Abbreviations: dm, dorsal membrane; dh, dorsal hook; 2t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414068" httpUri="https://zenodo.org/record/10414068/files/figure.png" pageId="6" pageNumber="131">Figs 4D,E</figureCitation>
, 
<figureCitation id="133BF5CDFFCEFFD05F9FD22865C0FBC3" box="[907,942,1031,1055]" captionStart="Figure 5" captionStartId="9.[121,189,1946,1968]" captionTargetBox="[127,1416,151,1934]" captionTargetId="figure-10@9.[127,1416,151,1934]" captionTargetPageId="9" captionText="Figure 5. SEM of Melinna hamulus sp. nov. (AM W.53257.001). (A) Neurochaeta of chaetiger 10. (B) Neurochaetae of chaetiger 13. (C) Neurochaetae of chaetiger 13. (D) Notochaetae of chaetiger 13. (E) Anterior abdominal neurochaetae. (F) Close­up view of anterior abdominal neurochaetae. (G) Posterior abdominal neurochaetae. (H) Close­up view of posterior abdominal neurochaetae. Scale bars: A, C, F, H, 10 μm; B, 20 μm; D, 200 μm; E, G, 50 μm. Abbreviations: d, dentition; t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414070" httpUri="https://zenodo.org/record/10414070/files/figure.png" pageId="6" pageNumber="131">5D</figureCitation>
). Abdominal notochaetae lacking. Small, rounded projections evident in notopodial positions, no cilia observed (
<figureCitation id="133BF5CDFFCEFFD05F5AD26D65F0FB86" box="[846,926,1090,1114]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Fig. 3D</figureCitation>
). Neurochaetae as an elongated row of simple acicular short spines on slightly raised glandular ridge and inserted progressively more dorsally from segment 2–5 (
<figureCitation id="133BF5CDFFCEFFD05956D25263C1FB49" box="[1346,1455,1149,1173]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Fig. 3A,B</figureCitation>
). Neuropodia with pectinate uncini from segment 6, present in 21 pairs of thoracic uncinigers (to end of abdomen, segment 26). Numbers of pairs of abdominal neuropodia 45, based on AM W.53257. Abdominal neuropodia elongate and basally swollen, without any rudimentary notopodia (
<figureCitation id="133BF5CDFFCEFFD0592AD32063C0FAFB" box="[1342,1454,1295,1319]" captionStart="Figure 5" captionStartId="9.[121,189,1946,1968]" captionTargetBox="[127,1416,151,1934]" captionTargetId="figure-10@9.[127,1416,151,1934]" captionTargetPageId="9" captionText="Figure 5. SEM of Melinna hamulus sp. nov. (AM W.53257.001). (A) Neurochaeta of chaetiger 10. (B) Neurochaetae of chaetiger 13. (C) Neurochaetae of chaetiger 13. (D) Notochaetae of chaetiger 13. (E) Anterior abdominal neurochaetae. (F) Close­up view of anterior abdominal neurochaetae. (G) Posterior abdominal neurochaetae. (H) Close­up view of posterior abdominal neurochaetae. Scale bars: A, C, F, H, 10 μm; B, 20 μm; D, 200 μm; E, G, 50 μm. Abbreviations: d, dentition; t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414070" httpUri="https://zenodo.org/record/10414070/files/figure.png" pageId="6" pageNumber="131">Fig. 5E,G</figureCitation>
). Thoracic uncini from segment 6 with 30 uncini within a row. Abdominal neuropodia with 31 uncini in torus. Dentition of uncini within a row varies slightly (
<figureCitation id="133BF5CDFFCEFFD058BCD3486362FAA3" box="[1192,1292,1383,1407]" captionStart="Figure 5" captionStartId="9.[121,189,1946,1968]" captionTargetBox="[127,1416,151,1934]" captionTargetId="figure-10@9.[127,1416,151,1934]" captionTargetPageId="9" captionText="Figure 5. SEM of Melinna hamulus sp. nov. (AM W.53257.001). (A) Neurochaeta of chaetiger 10. (B) Neurochaetae of chaetiger 13. (C) Neurochaetae of chaetiger 13. (D) Notochaetae of chaetiger 13. (E) Anterior abdominal neurochaetae. (F) Close­up view of anterior abdominal neurochaetae. (G) Posterior abdominal neurochaetae. (H) Close­up view of posterior abdominal neurochaetae. Scale bars: A, C, F, H, 10 μm; B, 20 μm; D, 200 μm; E, G, 50 μm. Abbreviations: d, dentition; t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414070" httpUri="https://zenodo.org/record/10414070/files/figure.png" pageId="6" pageNumber="131">Fig. 5F,H</figureCitation>
). Thoracic uncini avicular with two teeth in a vertical row over rostral tooth, sub­rostral process and basal prow (
<figureCitation id="133BF5CDFFCEFFD058D5D38D6374FA66" box="[1217,1306,1442,1466]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Figs 3G</figureCitation>
, 
<figureCitation id="133BF5CDFFCEFFD05932D38D6317FA66" box="[1318,1401,1442,1466]" captionStart="Figure 5" captionStartId="9.[121,189,1946,1968]" captionTargetBox="[127,1416,151,1934]" captionTargetId="figure-10@9.[127,1416,151,1934]" captionTargetPageId="9" captionText="Figure 5. SEM of Melinna hamulus sp. nov. (AM W.53257.001). (A) Neurochaeta of chaetiger 10. (B) Neurochaetae of chaetiger 13. (C) Neurochaetae of chaetiger 13. (D) Notochaetae of chaetiger 13. (E) Anterior abdominal neurochaetae. (F) Close­up view of anterior abdominal neurochaetae. (G) Posterior abdominal neurochaetae. (H) Close­up view of posterior abdominal neurochaetae. Scale bars: A, C, F, H, 10 μm; B, 20 μm; D, 200 μm; E, G, 50 μm. Abbreviations: d, dentition; t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414070" httpUri="https://zenodo.org/record/10414070/files/figure.png" pageId="6" pageNumber="131">5A,B,C</figureCitation>
). Side of uncini with marked ornamentation (
<figureCitation id="133BF5CDFFCEFFD058CED3906342FA0B" box="[1242,1324,1471,1495]" captionStart="Figure 5" captionStartId="9.[121,189,1946,1968]" captionTargetBox="[127,1416,151,1934]" captionTargetId="figure-10@9.[127,1416,151,1934]" captionTargetPageId="9" captionText="Figure 5. SEM of Melinna hamulus sp. nov. (AM W.53257.001). (A) Neurochaeta of chaetiger 10. (B) Neurochaetae of chaetiger 13. (C) Neurochaetae of chaetiger 13. (D) Notochaetae of chaetiger 13. (E) Anterior abdominal neurochaetae. (F) Close­up view of anterior abdominal neurochaetae. (G) Posterior abdominal neurochaetae. (H) Close­up view of posterior abdominal neurochaetae. Scale bars: A, C, F, H, 10 μm; B, 20 μm; D, 200 μm; E, G, 50 μm. Abbreviations: d, dentition; t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414070" httpUri="https://zenodo.org/record/10414070/files/figure.png" pageId="6" pageNumber="131">Fig. 5C</figureCitation>
). Abdominal uncini with conspicuous long tendons attaching them to body and visible through body wall. Uncini arranged on elevated neuropodia in curved row (
<figureCitation id="133BF5CDFFCEFFD0584ED03862ADF9F3" box="[1114,1219,1559,1583]" captionStart="Figure 5" captionStartId="9.[121,189,1946,1968]" captionTargetBox="[127,1416,151,1934]" captionTargetId="figure-10@9.[127,1416,151,1934]" captionTargetPageId="9" captionText="Figure 5. SEM of Melinna hamulus sp. nov. (AM W.53257.001). (A) Neurochaeta of chaetiger 10. (B) Neurochaetae of chaetiger 13. (C) Neurochaetae of chaetiger 13. (D) Notochaetae of chaetiger 13. (E) Anterior abdominal neurochaetae. (F) Close­up view of anterior abdominal neurochaetae. (G) Posterior abdominal neurochaetae. (H) Close­up view of posterior abdominal neurochaetae. Scale bars: A, C, F, H, 10 μm; B, 20 μm; D, 200 μm; E, G, 50 μm. Abbreviations: d, dentition; t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414070" httpUri="https://zenodo.org/record/10414070/files/figure.png" pageId="6" pageNumber="131">Fig. 5E,G</figureCitation>
). Uncini with four to six teeth (
<figureCitation id="133BF5CDFFCEFFD05F93D01A6583F991" box="[903,1005,1589,1613]" captionStart="Figure 5" captionStartId="9.[121,189,1946,1968]" captionTargetBox="[127,1416,151,1934]" captionTargetId="figure-10@9.[127,1416,151,1934]" captionTargetPageId="9" captionText="Figure 5. SEM of Melinna hamulus sp. nov. (AM W.53257.001). (A) Neurochaeta of chaetiger 10. (B) Neurochaetae of chaetiger 13. (C) Neurochaetae of chaetiger 13. (D) Notochaetae of chaetiger 13. (E) Anterior abdominal neurochaetae. (F) Close­up view of anterior abdominal neurochaetae. (G) Posterior abdominal neurochaetae. (H) Close­up view of posterior abdominal neurochaetae. Scale bars: A, C, F, H, 10 μm; B, 20 μm; D, 200 μm; E, G, 50 μm. Abbreviations: d, dentition; t, two tiers of notochaetae." figureDoi="http://doi.org/10.5281/zenodo.10414070" httpUri="https://zenodo.org/record/10414070/files/figure.png" pageId="6" pageNumber="131">Fig. 5F,H</figureCitation>
). Posterior segments compacted, none of the 
<typeStatus id="54BB57EAFFCEFFD05F53D07C65C4F9B7" box="[839,938,1619,1643]" pageId="6" pageNumber="131" type="paratype">paratypes</typeStatus>
complete. Pygidium with two lateral lobes and 4–5 smaller lobes surrounding them (
<figureCitation id="133BF5CDFFCEFFD05898D04062B2F954" box="[1164,1244,1647,1672]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Fig. 3H</figureCitation>
). No anal cirri present.
</paragraph>
<paragraph id="8BBFE948FFCEFFD05F52D08F6274F92E" blockId="6.[838,1467,1695,1778]" pageId="6" pageNumber="131">
<emphasis id="B974355AFFCEFFD05F52D08F6511F964" bold="true" box="[838,895,1696,1720]" pageId="6" pageNumber="131">Tube</emphasis>
. Composed of fine­grained sediment and lined with a thin, stiff clear membrane. Length of tube at least 2 times specimen (
<figureCitation id="133BF5CDFFCEFFD05FAED0F56263F92E" box="[954,1037,1754,1778]" captionStart="Figure 3" captionStartId="7.[121,189,1844,1866]" captionTargetBox="[218,1321,151,1831]" captionTargetId="figure-9@7.[218,1321,151,1831]" captionTargetPageId="7" captionText="Figure 3. Light microscopy images of Melinna hamulus sp. nov. (A) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (B) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia.(b)AM W.53880, dorsal hook outlined to highlight shape.(C)AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (D) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (E) AM W.50366, tube. (F) AM W.50366, ventral view anterior. (G) AM W.53257, thoracic uncini of segment 9. (H) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: seg, segment; noto, notochaetae; neuro, neurochaetae; es, eyespots; bf, branchiae completely free; dm, dorsal membrane; dh, dorsal hooks; full noto, fully developed notopodia." figureDoi="http://doi.org/10.5281/zenodo.10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="6" pageNumber="131">Fig. 3E</figureCitation>
).
</paragraph>
<paragraph id="8BBFE948FFCEFFD05F53D12265D4F809" blockId="6.[839,1467,1805,2005]" pageId="6" pageNumber="131">
<emphasis id="B974355AFFCEFFD05F53D12262E4F8F9" bold="true" box="[839,1162,1805,1829]" pageId="6" pageNumber="131">Methyl blue staining pattern</emphasis>
. Use of methyl blue staining reveals strong staining of the prostomium and segments 1–4, branchiae lightly speckled at tips and transverse rings at bases. Stained band behind dorsal membrane from segments 5–6. Light staining elsewhere on thorax and on abdomen. Light staining on ventral shields, staining stronger laterally on shields.
</paragraph>
</subSubSection>
<caption id="DF7FB9C0FFCFFFD15C6DD11B6558F7D9" ID-DOI="http://doi.org/10.5281/zenodo.10414066" ID-Zenodo-Dep="10414066" httpUri="https://zenodo.org/record/10414066/files/figure.png" pageId="7" pageNumber="132" startId="7.[121,189,1844,1866]" targetBox="[218,1321,151,1831]" targetPageId="7" targetType="figure">
<paragraph id="8BBFE948FFCFFFD15C6DD11B6558F7D9" blockId="7.[121,1422,1844,2053]" pageId="7" pageNumber="132">
<emphasis id="B974355AFFCFFFD15C6DD11B66A0F895" bold="true" box="[121,206,1844,1866]" pageId="7" pageNumber="132">Figure 3</emphasis>
. Light microscopy images of 
<taxonomicName id="4C0092CBFFCFFFD15DFDD11B64FEF895" authority="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings, 2023" authorityName="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings" authorityYear="2023" box="[489,656,1844,1865]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="7" pageNumber="132" phylum="Annelida" rank="species" species="hamulus" status="sp. nov.">
<emphasis id="B974355AFFCFFFD15DFDD11B64FEF895" box="[489,656,1844,1865]" italics="true" pageId="7" pageNumber="132">Melinna hamulus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2478821FFCFFFD15E81D11A64B1F896" box="[661,735,1845,1866]" pageId="7" pageNumber="132" rank="species">sp. nov.</taxonomicNameLabel>
(
<emphasis id="B974355AFFCFFFD15EFFD11A6494F896" box="[747,762,1845,1866]" italics="true" pageId="7" pageNumber="132">A</emphasis>
) AM W.50366, dorsal view of anterior end showing positions of first neuro­ and notochaetae, in specimen stained with methyl blue. (
<emphasis id="B974355AFFCFFFD15EF7D17F649CF8B9" box="[739,754,1872,1893]" italics="true" pageId="7" pageNumber="132">B</emphasis>
) AM W.50366, dorsal view of anterior end stained with methyl blue. Ellipsoid shows raised thoracic neuropodia. (
<emphasis id="B974355AFFCFFFD15E36D1456440F8A3" box="[546,558,1898,1919]" italics="true" pageId="7" pageNumber="132">b</emphasis>
) AM W.53880, dorsal hook outlined to highlight shape. (
<emphasis id="B974355AFFCFFFD15853D1456239F8A3" box="[1095,1111,1898,1919]" italics="true" pageId="7" pageNumber="132">C</emphasis>
) AM W.50366, whole specimen, upper­dorsal view stained with methyl blue, lower­ventral view stained with methyl blue. (
<emphasis id="B974355AFFCFFFD15FF3D1AA6596F846" box="[999,1016,1925,1946]" italics="true" pageId="7" pageNumber="132">D</emphasis>
) AM W.53257, abdomen, arrows indicate notopodia as small rounded projections. (
<emphasis id="B974355AFFCFFFD15E1BD18F6470F869" box="[527,542,1952,1973]" italics="true" pageId="7" pageNumber="132">E</emphasis>
) AM W.50366, tube. (
<emphasis id="B974355AFFCFFFD15EEAD18F6563F869" box="[766,781,1952,1973]" italics="true" pageId="7" pageNumber="132">F</emphasis>
) AM W.50366, ventral view anterior. (
<emphasis id="B974355AFFCFFFD1589AD18F62F1F869" box="[1166,1183,1952,1973]" italics="true" pageId="7" pageNumber="132">G</emphasis>
) AM W.53257, thoracic uncini of segment 9. (
<emphasis id="B974355AFFCFFFD15D5AD1946731F80C" box="[334,351,1979,2000]" italics="true" pageId="7" pageNumber="132">H</emphasis>
) AM W.50366, pygidium stained with methyl blue. Scale bars: A, 500 μm; B, C, F, 1 mm; b, H, 200 μm; E, 2 mm; G, 20 μm. Abbreviations: 
<emphasis id="B974355AFFCFFFD15DBFD1FA67A5F836" box="[427,459,2005,2026]" italics="true" pageId="7" pageNumber="132">seg</emphasis>
, segment; 
<emphasis id="B974355AFFCFFFD15E22D1FA640FF836" box="[566,609,2005,2026]" italics="true" pageId="7" pageNumber="132">noto</emphasis>
, notochaetae; 
<emphasis id="B974355AFFCFFFD15EFAD1FA654BF836" box="[750,805,2005,2026]" italics="true" pageId="7" pageNumber="132">neuro</emphasis>
, neurochaetae; 
<emphasis id="B974355AFFCFFFD15FABD1FA65BDF836" box="[959,979,2005,2026]" italics="true" pageId="7" pageNumber="132">es</emphasis>
, eyespots; 
<emphasis id="B974355AFFCFFFD15855D1FB623AF835" box="[1089,1108,2004,2025]" italics="true" pageId="7" pageNumber="132">bf</emphasis>
, branchiae completely free; 
<emphasis id="B974355AFFCFFFD1597ED1FB63E9F835" box="[1386,1415,2004,2025]" italics="true" pageId="7" pageNumber="132">dm</emphasis>
, dorsal membrane; 
<emphasis id="B974355AFFCFFFD15D38D1C0672AF7D8" box="[300,324,2031,2052]" italics="true" pageId="7" pageNumber="132">dh</emphasis>
, dorsal hooks; 
<emphasis id="B974355AFFCFFFD15DC2D1C06449F7D9" box="[470,551,2031,2053]" italics="true" pageId="7" pageNumber="132">full noto</emphasis>
, fully developed notopodia.
</paragraph>
</caption>
<caption id="DF7FB9C0FFC0FFDE5CB3D1B162F5F7D8" ID-DOI="http://doi.org/10.5281/zenodo.10414068" ID-Zenodo-Dep="10414068" httpUri="https://zenodo.org/record/10414068/files/figure.png" pageId="8" pageNumber="133" startId="8.[167,235,1950,1972]" targetBox="[172,1461,151,1934]" targetPageId="8" targetType="figure">
<paragraph id="8BBFE948FFC0FFDE5CB3D1B162F5F7D8" blockId="8.[167,1467,1950,2052]" pageId="8" pageNumber="133">
<emphasis id="B974355AFFC0FFDE5CB3D1B16693F86F" bold="true" box="[167,253,1950,1972]" pageId="8" pageNumber="133">Figure 4</emphasis>
. SEM images of 
<taxonomicName id="4C0092CBFFC0FFDE5DB1D1B16422F86F" authority="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings, 2023" authorityName="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings" authorityYear="2023" box="[421,588,1950,1971]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="8" pageNumber="133" phylum="Annelida" rank="species" species="hamulus" status="sp. nov.">
<emphasis id="B974355AFFC0FFDE5DB1D1B16422F86F" box="[421,588,1950,1971]" italics="true" pageId="8" pageNumber="133">Melinna hamulus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2478821FFC0FFDE5E47D1B064F0F868" box="[595,670,1951,1972]" pageId="8" pageNumber="133" rank="species">sp. nov.</taxonomicNameLabel>
(AM W.53257.001). (
<emphasis id="B974355AFFC0FFDE5F61D1B065EAF868" box="[885,900,1951,1972]" italics="true" pageId="8" pageNumber="133">A</emphasis>
) Ventral view of anterior end. (
<emphasis id="B974355AFFC0FFDE58A0D1B062ADF868" box="[1204,1219,1951,1972]" italics="true" pageId="8" pageNumber="133">B</emphasis>
) Ventral view of lips. (
<emphasis id="B974355AFFC0FFDE59B7D1B063DDF868" box="[1443,1459,1951,1972]" italics="true" pageId="8" pageNumber="133">C</emphasis>
) Lateral view of anterior notopodia. (
<emphasis id="B974355AFFC0FFDE5E14D195647FF813" box="[512,529,1978,1999]" italics="true" pageId="8" pageNumber="133">D</emphasis>
) Anterior notopodia. (
<emphasis id="B974355AFFC0FFDE5EF3D1956498F813" box="[743,758,1978,1999]" italics="true" pageId="8" pageNumber="133">E</emphasis>
) Surface of notochaetae. (
<emphasis id="B974355AFFC0FFDE5FE4D1956591F813" box="[1008,1023,1978,1999]" italics="true" pageId="8" pageNumber="133">F</emphasis>
) Lateral view of anterior end. (
<emphasis id="B974355AFFC0FFDE593CD1966357F812" box="[1320,1337,1977,1998]" italics="true" pageId="8" pageNumber="133">G</emphasis>
) Dorsal view of anterior end. (
<emphasis id="B974355AFFC0FFDE5D5CD1FB6737F835" box="[328,345,2004,2025]" italics="true" pageId="8" pageNumber="133">H</emphasis>
) Dorsal hook. (
<emphasis id="B974355AFFC0FFDE5DE5D1FB6797F835" box="[497,505,2004,2025]" italics="true" pageId="8" pageNumber="133">I</emphasis>
) Lateral view of anterior end including dorsal hooks. Scale bars: A, C, F, G, I, 1 mm; B, H, 500 μm; D, 200 μm; E, 20 μm. Abbreviations: 
<emphasis id="B974355AFFC0FFDE5E06D1C16441F7DF" box="[530,559,2030,2051]" italics="true" pageId="8" pageNumber="133">dm</emphasis>
, dorsal membrane; 
<emphasis id="B974355AFFC0FFDE5EFAD1C16568F7DF" box="[750,774,2030,2051]" italics="true" pageId="8" pageNumber="133">dh</emphasis>
, dorsal hook; 
<emphasis id="B974355AFFC0FFDE5F9BD1C165CCF7DF" box="[911,930,2030,2051]" italics="true" pageId="8" pageNumber="133">2t</emphasis>
, two tiers of notochaetae.
</paragraph>
</caption>
<caption id="DF7FB9C0FFC1FFDF5C6DD1B56212F7DC" ID-DOI="http://doi.org/10.5281/zenodo.10414070" ID-Zenodo-Dep="10414070" httpUri="https://zenodo.org/record/10414070/files/figure.png" pageId="9" pageNumber="134" startId="9.[121,189,1946,1968]" targetBox="[127,1416,151,1934]" targetPageId="9" targetType="figure">
<paragraph id="8BBFE948FFC1FFDF5C6DD1B56212F7DC" blockId="9.[121,1422,1946,2048]" pageId="9" pageNumber="134">
<emphasis id="B974355AFFC1FFDF5C6DD1B566BEF873" bold="true" box="[121,208,1946,1968]" pageId="9" pageNumber="134">Figure 5</emphasis>
. SEM of 
<taxonomicName id="4C0092CBFFC1FFDF5D25D1B567B7F873" authority="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings, 2023" authorityName="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings" authorityYear="2023" box="[305,473,1946,1967]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="9" pageNumber="134" phylum="Annelida" rank="species" species="hamulus" status="sp. nov.">
<emphasis id="B974355AFFC1FFDF5D25D1B567B7F873" box="[305,473,1946,1967]" italics="true" pageId="9" pageNumber="134">Melinna hamulus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2478821FFC1FFDF5DF4D1B56443F873" box="[480,557,1946,1967]" pageId="9" pageNumber="134" rank="species">sp. nov.</taxonomicNameLabel>
(AM W.53257.001). (
<emphasis id="B974355AFFC1FFDF5F12D1B5657BF873" box="[774,789,1946,1967]" italics="true" pageId="9" pageNumber="134">A</emphasis>
) Neurochaeta of chaetiger 10. (
<emphasis id="B974355AFFC1FFDF5858D1B46235F86C" box="[1100,1115,1947,1968]" italics="true" pageId="9" pageNumber="134">B</emphasis>
) Neurochaetae of chaetiger 13. (
<emphasis id="B974355AFFC1FFDF5C95D19A66FFF816" box="[129,145,1973,1994]" italics="true" pageId="9" pageNumber="134">C</emphasis>
) Neurochaetae of chaetiger 13. (
<emphasis id="B974355AFFC1FFDF5DD8D19A67B3F816" box="[460,477,1973,1994]" italics="true" pageId="9" pageNumber="134">D</emphasis>
) Notochaetae of chaetiger 13. (
<emphasis id="B974355AFFC1FFDF5F18D19A6575F816" box="[780,795,1973,1994]" italics="true" pageId="9" pageNumber="134">E</emphasis>
) Anterior abdominal neurochaetae. (
<emphasis id="B974355AFFC1FFDF586FD19A62E4F816" box="[1147,1162,1973,1994]" italics="true" pageId="9" pageNumber="134">F</emphasis>
) Close­up view of anterior abdominal neurochaetae. (
<emphasis id="B974355AFFC1FFDF5D62D1FF67E9F839" box="[374,391,2000,2021]" italics="true" pageId="9" pageNumber="134">G</emphasis>
) Posterior abdominal neurochaetae. (
<emphasis id="B974355AFFC1FFDF5EFBD1FF656EF839" box="[751,768,2000,2021]" italics="true" pageId="9" pageNumber="134">H</emphasis>
) Close­up view of posterior abdominal neurochaetae. Scale bars: A, C, F, H, 10 μm; B, 20 μm; D, 200 μm; E, G, 50 μm. Abbreviations: 
<emphasis id="B974355AFFC1FFDF5F16D1C56560F823" box="[770,782,2026,2047]" italics="true" pageId="9" pageNumber="134">d</emphasis>
, dentition; 
<emphasis id="B974355AFFC1FFDF5F68D1C465EDF7DC" box="[892,899,2027,2048]" italics="true" pageId="9" pageNumber="134">t</emphasis>
, two tiers of notochaetae.
</paragraph>
</caption>
<subSubSection id="C31ABAC3FFC2FFDC5DB2D6B86565FC5D" pageId="10" pageNumber="135" type="discussion">
<paragraph id="8BBFE948FFC2FFDC5DB2D6B86474FF6D" blockId="10.[166,794,151,942]" box="[422,538,151,177]" pageId="10" pageNumber="135">
<emphasis id="B974355AFFC2FFDC5DB2D6B86474FF6D" bold="true" box="[422,538,151,177]" pageId="10" pageNumber="135">Remarks</emphasis>
</paragraph>
<paragraph id="8BBFE948FFC2FFDC5CB2D6E967FCFDDF" blockId="10.[166,794,151,942]" pageId="10" pageNumber="135">
<taxonomicName id="4C0092CBFFC2FFDC5CB2D6E96731FF02" authority="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings, 2023" authorityName="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings" authorityYear="2023" box="[166,351,198,222]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="10" pageNumber="135" phylum="Annelida" rank="species" species="hamulus" status="sp. nov.">
<emphasis id="B974355AFFC2FFDC5CB2D6E96731FF02" box="[166,351,198,222]" italics="true" pageId="10" pageNumber="135">Melinna hamulus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2478821FFC2FFDC5D72D6E867D6FF02" box="[358,440,199,222]" pageId="10" pageNumber="135" rank="species">sp. nov.</taxonomicNameLabel>
is characterized by the following characters: around 45 abdominal segments, dorsal membrane with 13–17 triangular projections, four pairs of branchiae completely free, one pair of curved dorsal hooks with pointed tips lacking a canal, and a pygidium with two large lateral lobes surrounded by four or five smaller lobes, which distinguishes it from all other described species where the data are available (
<tableCitation id="C682DCF3FFC2FFDC5D7FD7BB67D2FE77" box="[363,444,403,428]" captionStart="Table 5" captionStartId="23.[136,192,140,161]" captionText="Table 5. Diagnostic characters of Melinna species. Column headings are abbreviated as follows: corrected, numbering of anterior segments corrected; fusion, numbers of branchiae and degree of fusion; projections, dorsal membrane on segments 5—numbers of projections; neurochaetae, numbers of segments, numbers of abdominal segments.*Numbering of segments as stated in original paper indicating lack of recognition of achaetous segments," pageId="10" pageNumber="135">Table 5</tableCitation>
). We compare the morphological characters along with 
<typeStatus id="54BB57EAFFC2FFDC5D8ED79E67A6FE15" box="[410,456,433,457]" pageId="10" pageNumber="135">type</typeStatus>
locality and depth of our new species with the other currently accepted 26 species of 
<taxonomicName id="4C0092CBFFC2FFDC5CB3D7C3676EFDD8" authorityName="Malmgren" authorityYear="1865" box="[167,256,492,516]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="10" pageNumber="135" phylum="Annelida" rank="genus">
<emphasis id="B974355AFFC2FFDC5CB3D7C3676EFDD8" box="[167,256,492,516]" italics="true" pageId="10" pageNumber="135">Melinna</emphasis>
</taxonomicName>
(
<tableCitation id="C682DCF3FFC2FFDC5D19D7C36704FDD8" box="[269,362,492,516]" captionStart="Table 4" captionStartId="22.[166,229,171,195]" captionTargetPageId="22" captionText="Table 4. List of described Melinna species with type localities, depths, and coordinates (decimal degrees)." pageId="10" pageNumber="135">Tables 4</tableCitation>
, 
<tableCitation id="C682DCF3FFC2FFDC5D61D7C467EAFDDF" box="[373,388,491,515]" captionStart="Table 5" captionStartId="23.[136,192,140,161]" captionText="Table 5. Diagnostic characters of Melinna species. Column headings are abbreviated as follows: corrected, numbering of anterior segments corrected; fusion, numbers of branchiae and degree of fusion; projections, dorsal membrane on segments 5—numbers of projections; neurochaetae, numbers of segments, numbers of abdominal segments.*Numbering of segments as stated in original paper indicating lack of recognition of achaetous segments," pageId="10" pageNumber="135">5</tableCitation>
).
</paragraph>
<paragraph id="8BBFE948FFC2FFDC5CD1D4266565FC5D" blockId="10.[166,794,151,942]" pageId="10" pageNumber="135">
<bibRefCitation id="EF9194B9FFC2FFDC5CD1D42667DFFDFD" author="Gunton, L. M. &amp; E. K. Kupriyanova &amp; T. Alvestad &amp; L. Avery &amp; J. A. Blake &amp; O. Biriukova &amp; M. Boggemann &amp; P. Borisova &amp; N. Budaeva &amp; I. Burghardt &amp; M. Capa &amp; M. N. Georgieva &amp; C. J. Glasby &amp; P. - W. Hsueh &amp; P. Hutchings &amp; N. Jimi &amp; J. A. Kongsrud &amp; J. Langeneck &amp; K. Meissner &amp; A. Murray &amp; M. Nikolic &amp; H. Paxton &amp; D. A. Ramos &amp; A. Schulze &amp; R. Sobczyk &amp; C. Watson &amp; H. Wiklund &amp; R. S. Wilson &amp; A. Zhadan &amp; J. Zhang" box="[197,433,521,545]" pageId="10" pageNumber="135" pagination="1 - 198" refId="ref13069" refString="Gunton, L. M., E. K. Kupriyanova, T. Alvestad, L. Avery, J. A. Blake, O. Biriukova, M. Boggemann, P. Borisova, N. Budaeva, I. Burghardt, M. Capa, M. N. Georgieva, C. J. Glasby, P. - W. Hsueh, P. Hutchings, N. Jimi, J. A. Kongsrud, J. Langeneck, K. Meissner, A. Murray, M. Nikolic, H. Paxton, D. A. Ramos, A. Schulze, R. Sobczyk, C. Watson, H. Wiklund, R. S. Wilson, A. Zhadan, and J. Zhang. 2021. Annelids of the eastern Australian abyss collected by the 2017 RV ' Investigator' voyage. Zookeys 1020: 1 - 198. https: // doi. org / 10.3897 / zookeys. 1020.57921" type="journal article" year="2021">
Gunton 
<emphasis id="B974355AFFC2FFDC5D36D4256738FDFD" box="[290,342,521,545]" italics="true" pageId="10" pageNumber="135">et al</emphasis>
. (2021)
</bibRefCitation>
recorded this species as 
<emphasis id="B974355AFFC2FFDC5EC2D425649AFDFD" box="[726,756,522,545]" italics="true" pageId="10" pageNumber="135">M.</emphasis>
cf. 
<taxonomicName id="4C0092CBFFC2FFDC5CB3D40967D6FDE2" authority="McIntosh, 1885" authorityName="McIntosh" authorityYear="1885" box="[167,440,550,574]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="10" pageNumber="135" phylum="Annelida" rank="species" species="armandi">
<emphasis id="B974355AFFC2FFDC5CB3D409676FFDE2" box="[167,257,550,574]" italics="true" pageId="10" pageNumber="135">armandi</emphasis>
<bibRefCitation id="EF9194B9FFC2FFDC5D1ED40967D6FDE2" author="McIntosh, W. C." box="[266,440,550,574]" pageId="10" pageNumber="135" pagination="1 - 554" refId="ref13959" refString="McIntosh, W. C. 1885. Report on the Annelida Polychaeta collected by H. M. S. Challenger during the years 1873 - 1876. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76. Zoology (12) (part 34): i-xxxvi, 1 - 554." type="journal article" year="1885">McIntosh, 1885</bibRefCitation>
</taxonomicName>
, which was originally described from west of North Island, 
<collectingCountry id="F317A9D8FFC2FFDC5DD7D46B643EFD80" box="[451,592,580,604]" name="New Zealand" pageId="10" pageNumber="135">New Zealand</collectingCountry>
in a depth of 2,012 m. However, while having a similar number of abdominal segments, 
<taxonomicName id="4C0092CBFFC2FFDC5D0CD45067F8FD4A" authorityName="McIntosh" authorityYear="1885" box="[280,406,638,662]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="10" pageNumber="135" phylum="Annelida" rank="species" species="armandi">
<emphasis id="B974355AFFC2FFDC5D0CD45067F8FD4A" box="[280,406,638,662]" italics="true" pageId="10" pageNumber="135">M. armandi</emphasis>
</taxonomicName>
has the dorsal membrane with only eight large projections, far fewer than in the new species (13–17) and the dorsal hooks have a distinct canal which is absent in 
<taxonomicName id="4C0092CBFFC2FFDC5D39D4F867C3FD32" authority="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings, 2023" authorityName="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings" authorityYear="2023" box="[301,429,726,750]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="10" pageNumber="135" phylum="Annelida" rank="species" species="hamulus" status="sp. nov.">
<emphasis id="B974355AFFC2FFDC5D39D4F867C3FD32" box="[301,429,726,750]" italics="true" pageId="10" pageNumber="135">M. hamulus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2478821FFC2FFDC5DA3D4F86463FD32" box="[439,525,727,750]" pageId="10" pageNumber="135" rank="species">sp. nov.</taxonomicNameLabel>
The only other 
<taxonomicName id="4C0092CBFFC2FFDC5ED5D4F96574FD32" authorityName="Malmgren" authorityYear="1865" box="[705,794,726,750]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="10" pageNumber="135" phylum="Annelida" rank="genus">
<emphasis id="B974355AFFC2FFDC5ED5D4F96574FD32" box="[705,794,726,750]" italics="true" pageId="10" pageNumber="135">Melinna</emphasis>
</taxonomicName>
species recorded in the region is 
<taxonomicName id="4C0092CBFFC2FFDC5E15D4DB6574FCD0" authority="Parapar &amp; San" authorityName="Parapar &amp; San Martin" authorityYear="1997" box="[513,794,756,780]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="10" pageNumber="135" phylum="Annelida" rank="species" species="arnaudi">
<emphasis id="B974355AFFC2FFDC5E15D4DB6416FCD0" box="[513,632,756,780]" italics="true" pageId="10" pageNumber="135">M. arnaudi</emphasis>
Parapar &amp; San
</taxonomicName>
Martín, 1997 from Livingston Island in 
<collectingCountry id="F317A9D8FFC2FFDC5E7ED53E64B5FCF5" box="[618,731,785,809]" name="Antarctica" pageId="10" pageNumber="135">Antarctica</collectingCountry>
from 
<quantity id="4CF844ADFFC2FFDC5CB2D5016749FC9A" box="[166,295,814,838]" metricMagnitude="2" metricUnit="m" metricValue="2.63" metricValueMax="4.22" metricValueMin="1.04" pageId="10" pageNumber="135" unit="m" value="263.0" valueMax="422.0" valueMin="104.0">104–422 m</quantity>
, which has 72 abdominal chaetigers and so easily distinguished from 
<taxonomicName id="4C0092CBFFC2FFDC5DD4D563642EFCB8" authority="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings, 2023" authorityName="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings" authorityYear="2023" box="[448,576,844,868]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="10" pageNumber="135" phylum="Annelida" rank="species" species="hamulus" status="sp. nov.">
<emphasis id="B974355AFFC2FFDC5DD4D563642EFCB8" box="[448,576,844,868]" italics="true" pageId="10" pageNumber="135">M. hamulus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2478821FFC2FFDC5E5DD56364CEFCBF" box="[585,672,844,867]" pageId="10" pageNumber="135" rank="species">sp. nov.</taxonomicNameLabel>
, which has 45 abdominal segments and occurs below 
<quantity id="4CF844ADFFC2FFDC5E7ED54664ACFC5C" box="[618,706,873,897]" metricMagnitude="3" metricUnit="m" metricValue="4.0" pageId="10" pageNumber="135" unit="m" value="4000.0">4,000 m</quantity>
depth.
</paragraph>
</subSubSection>
<subSubSection id="C31ABAC3FFC2FFDC5CB2D5B9654FFC10" pageId="10" pageNumber="135" type="multiple">
<paragraph id="8BBFE948FFC2FFDC5CB2D5B9654FFC10" blockId="10.[166,794,151,942]" lastBlockId="10.[166,801,948,972]" pageId="10" pageNumber="135">
<emphasis id="B974355AFFC2FFDC5CB2D5B967D5FC72" bold="true" box="[166,443,918,942]" pageId="10" pageNumber="135">Type locality and habitat</emphasis>
. Bass Strait, 
<collectingRegion id="49C427AAFFC2FFDC5E56D5B964A6FC72" box="[578,712,918,942]" country="Australia" name="Western Australia" pageId="10" pageNumber="135">SE Australia</collectingRegion>
, 4,133– 
<quantity id="4CF844ADFFC2FFDC5CB2D59B6691FC17" box="[166,255,948,972]" metricMagnitude="3" metricUnit="m" metricValue="4.197" pageId="10" pageNumber="135" unit="m" value="4197.0">4,197 m</quantity>
, no sediment data was collected due to gear failure.
</paragraph>
</subSubSection>
<subSubSection id="C31ABAC3FFC2FFDC5CB2D5CE6735FBE8" pageId="10" pageNumber="135" type="etymology">
<paragraph id="8BBFE948FFC2FFDC5CB2D5CE6735FBE8" blockId="10.[166,794,993,1076]" pageId="10" pageNumber="135">
<emphasis id="B974355AFFC2FFDC5CB2D5CE674FFC25" bold="true" box="[166,289,993,1017]" pageId="10" pageNumber="135">Etymology</emphasis>
. The new species is named 
<taxonomicName id="4C0092CBFFC2FFDC5E4ED5CE64DAFC25" authorityName="Gunton &amp; Zhang &amp; Kupriyanova &amp; Hutchings" authorityYear="2023" box="[602,692,993,1017]" class="Polychaeta" family="Melinnidae" genus="Melinna" kingdom="Animalia" order="Terebellida" pageId="10" pageNumber="135" phylum="Annelida" rank="species" species="hamulus">
<emphasis id="B974355AFFC2FFDC5E4ED5CE64DAFC25" box="[602,692,993,1017]" italics="true" pageId="10" pageNumber="135">hamulus</emphasis>
</taxonomicName>
meaning little hook in Latin, a reference to the small dorsal hooks of this new species.
</paragraph>
</subSubSection>
</treatment>
</document>