<documentid="C41A63757A4CAEA2CCD885295AEA699B"ID-DOI="10.5852/ejt.2024.925.2449"ID-GBIF-Dataset="6892fd36-5962-4d66-91ad-ac980ae7fb3c"ID-ISSN="2118-9773"ID-Zenodo-Dep="10803984"ID-ZooBank="D89946CC-B736-4295-9433-52231D525E41"IM.bibliography_approvedBy="carolina"IM.illustrations_approvedBy="admin"IM.materialsCitations_approvedBy="carolina"IM.metadata_approvedBy="carolina"IM.tables_approvedBy="carolina"IM.taxonomicNames_approvedBy="admin"IM.treatments_approvedBy="carolina"checkinTime="1710151438754"checkinUser="plazi"docAuthor="Rodolfo Leandro Nascimento, Marcelo Veronesi Fukuda & Paulo Cesar de Paiva"docDate="2024"docId="03FB878FCB212E4BD1611A5E0295FBC1"docLanguage="en"docName="EJT.2024.925.46-66.pdf"docOrigin="European Journal of Taxonomy 925 (1)"docSource="https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2449/10859"docStyle="DocumentStyle:EF2B578F1D15862ADE45B0C07C620911.14:EJT.2018-.journal_article.type1"docStyleId="EF2B578F1D15862ADE45B0C07C620911"docStyleName="EJT.2018-.journal_article.type1"docStyleVersion="14"docTitle="Westheidesyllis splendida Nascimento, Fukuda & Paiva, 2024, sp. nov."docType="treatment"docUuid="D172737A-CC06-4DAB-B6E7-F82FDBD4A8E2"docUuidSource="ZooBank"docVersion="7"lastPageNumber="62"masterDocId="FFC2FFF7CB282E42D3311B560611FFDA"masterDocTitle="Two new incertae sedis syllids (Annelida: Syllidae) from Brazilian oceanic islands"masterLastPageNumber="66"masterPageNumber="46"pageNumber="55"updateTime="1718644431831"updateUser="ExternalLinkService"zenodo-license-document="CC-BY-4.0"zenodo-license-figures="CC-BY-4.0"zenodo-license-treatments="UNSPECIFIED">
<mods:affiliationid="2764F2B17E44DACF8978D927315E0550">Laboratório de Polychaeta, Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil & Programa dePós-graduação em Biodiversidade e Biologia Evolutiva, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil</mods:affiliation>
<mods:affiliationid="BB130BDB98192EDA32D13D1431310B77">Programa dePós-graduação em Biodiversidade e Biologia Evolutiva, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil</mods:affiliation>
<taxonomicNameid="4C524D1ACB212E4BD1611A5E0593FEF9"ID-CoL="C8NLX"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"box="[592,898,264,291]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="9"pageNumber="55"phylum="Annelida"rank="species"species="splendida"status="sp. nov.">
<taxonomicNameid="4C524D1ACB212E4BD38C1AE9077EFE03"authorityName="San Martin, Lopez & Aguado"authorityYear="2009"box="[189,367,447,473]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="9"pageNumber="55"phylum="Annelida"rank="genus">
<specimenCodeid="DBF49EE2CB212E4BD38C19B00772FCDA"box="[189,355,742,768]"collectionCode="MZUSP"country="Brazil"httpUri="http://grbio.org/cool/6yx0-3nm7"name="Museu de Zoologia da Universidade de Sao Paulo"pageId="9"pageNumber="55">MZUSP 6098</specimenCode>
<specimenCodeid="DBF49EE2CB212E4BD06B181C0211FCBE"box="[858,1024,842,868]"collectionCode="MZUSP"country="Brazil"httpUri="http://grbio.org/cool/6yx0-3nm7"name="Museu de Zoologia da Universidade de Sao Paulo"pageId="9"pageNumber="55">MZUSP 6099</specimenCode>
<materialsCitationid="3B3A3CC4CB212E4BD0D718EC0367FC22"ID-GBIF-Occurrence="4601452305"collectingDate="2000-10-16"collectionCode="MNRJP"collectorName="Piscina das Ancoras"country="Brazil"elevation="1"latitude="-3.8638265"longLatPrecision="1"longitude="-33.82639"pageId="9"pageNumber="55"specimenCount="1">
57 specs (four mounted for SEM);
<collectorNameid="26A7534FCB212E4BD38C188B07BBFC20"box="[189,426,989,1018]"pageId="9"pageNumber="55">Piscina das Âncoras</collectorName>
wide, with 32 chaetigers; specimens preserved in ethanol without pigmentation. Palps subtriangular, basally juxtaposed for ~¼ their length, distally rounded, slightly shorter than prostomium (
<figureCitationid="13692A1CCB212E4BD01B1D09059EF9A3"box="[810,911,1631,1657]"captionStart="Fig"captionStartId="10.[191,234,1892,1918]"captionTargetBox="[189,1400,823,1850]"captionTargetId="figure-225@10.[189,1400,823,1850]"captionTargetPageId="10"captionText="Fig. 2. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Whole body of methyl green stained specimen, dorsal view. B. Midbody of methyl green stained specimen, white arrows showing parapodial glands, black arrows showing digestive tube content.C. Midbody parapodial glands on a not stained specimen. Scale bars: A = 0.22 mm; B = 0.15 mm; C = 0.1 mm."figureDoi="http://doi.org/10.5281/zenodo.10803988"httpUri="https://zenodo.org/record/10803988/files/figure.png"pageId="9"pageNumber="55">Figs 2A</figureCitation>
<figureCitationid="13692A1CCB212E4BD08F1D0905F4F9A3"box="[958,997,1631,1657]"captionStart="Fig"captionStartId="12.[187,230,1928,1954]"captionTargetBox="[187,1398,562,1882]"captionTargetId="figure-87@12.[187,1398,561,1882]"captionTargetPageId="12"captionText="Fig. 4. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Anterior body, ventral view. B. Midbody parapodium, with dorsal cirrus and parapodial glands, dorso-lateral view. C–D. Midbody and posterior end, dorsal view. Scale bars: A, C–D = 0.2 mm; B = 15 µm."figureDoi="http://doi.org/10.5281/zenodo.10803994"httpUri="https://zenodo.org/record/10803994/files/figure.png"pageId="9"pageNumber="55">4A</figureCitation>
,
<figureCitationid="13692A1CCB212E4BD0C51D090277F9A3"box="[1012,1126,1631,1658]"captionStart="Fig"captionStartId="13.[189,232,1822,1848]"captionTargetBox="[189,1398,485,1778]"captionTargetId="figure-70@13.[188,1399,484,1779]"captionTargetPageId="13"captionText="Fig. 5. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A. Anterior body, dorsal view. B. Details of prostomium, peristomium, and nuchal organs, dorsal view. C. Anterior body of specimen with retracted nuchal organs, dorsal view. D. Anterior end, dorsal view. E–F. Details of retracted ciliated nuchal organs. G. Anterior segments showing details of ciliary pits, dorsal view. H. Posterior end, dorsal view. Red arrows pointing to ciliated nuchal organs, white arrows pointing to ciliary pits. Scale bars: A, C = 50 µm; B, G = 10 µm; D, H = 20 µm; E = 2 µm; F = 5 µm."figureDoi="http://doi.org/10.5281/zenodo.10803996"httpUri="https://zenodo.org/record/10803996/files/figure.png"pageId="9"pageNumber="55">5A, C–D</figureCitation>
). Prostomium ovate to subpentagonal; eyes absent; lateral antennae inserted close to anterior margin of prostomium, about half length of median one; median antenna inserted on midline of prostomium, almost four times as long as palps and prostomium (
<figureCitationid="13692A1CCB212E4BD1661D9E04B5F939"box="[599,676,1736,1763]"captionStart="Fig"captionStartId="13.[189,232,1822,1848]"captionTargetBox="[189,1398,485,1778]"captionTargetId="figure-70@13.[188,1399,484,1779]"captionTargetPageId="13"captionText="Fig. 5. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A. Anterior body, dorsal view. B. Details of prostomium, peristomium, and nuchal organs, dorsal view. C. Anterior body of specimen with retracted nuchal organs, dorsal view. D. Anterior end, dorsal view. E–F. Details of retracted ciliated nuchal organs. G. Anterior segments showing details of ciliary pits, dorsal view. H. Posterior end, dorsal view. Red arrows pointing to ciliated nuchal organs, white arrows pointing to ciliary pits. Scale bars: A, C = 50 µm; B, G = 10 µm; D, H = 20 µm; E = 2 µm; F = 5 µm."figureDoi="http://doi.org/10.5281/zenodo.10803996"httpUri="https://zenodo.org/record/10803996/files/figure.png"pageId="9"pageNumber="55">5A–D</figureCitation>
). Two large ciliated nuchal organs between prostomium and peristomium (
<figureCitationid="13692A1CCB212E4BD2521DBA07AEF8DC"box="[355,447,1771,1798]"captionStart="Fig"captionStartId="13.[189,232,1822,1848]"captionTargetBox="[189,1398,485,1778]"captionTargetId="figure-70@13.[188,1399,484,1779]"captionTargetPageId="13"captionText="Fig. 5. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A. Anterior body, dorsal view. B. Details of prostomium, peristomium, and nuchal organs, dorsal view. C. Anterior body of specimen with retracted nuchal organs, dorsal view. D. Anterior end, dorsal view. E–F. Details of retracted ciliated nuchal organs. G. Anterior segments showing details of ciliary pits, dorsal view. H. Posterior end, dorsal view. Red arrows pointing to ciliated nuchal organs, white arrows pointing to ciliary pits. Scale bars: A, C = 50 µm; B, G = 10 µm; D, H = 20 µm; E = 2 µm; F = 5 µm."figureDoi="http://doi.org/10.5281/zenodo.10803996"httpUri="https://zenodo.org/record/10803996/files/figure.png"pageId="9"pageNumber="55">Fig. 5B</figureCitation>
). Peristomium distinct, shorter than subsequent segments; dorsal peristomial cirri about same length or slightly shorter than median antenna (
); ventral peristomial cirri almost half length of dorsal ones. Ciliated pits transversally arranged on midline of peristomium and first chaetiger, from the second to at least chaetiger 15 (
<figureCitationid="13692A1CCB212E4BD1AE1C030531F8B5"box="[671,800,1877,1904]"captionStart="Fig"captionStartId="13.[189,232,1822,1848]"captionTargetBox="[189,1398,485,1778]"captionTargetId="figure-70@13.[188,1399,484,1779]"captionTargetPageId="13"captionText="Fig. 5. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A. Anterior body, dorsal view. B. Details of prostomium, peristomium, and nuchal organs, dorsal view. C. Anterior body of specimen with retracted nuchal organs, dorsal view. D. Anterior end, dorsal view. E–F. Details of retracted ciliated nuchal organs. G. Anterior segments showing details of ciliary pits, dorsal view. H. Posterior end, dorsal view. Red arrows pointing to ciliated nuchal organs, white arrows pointing to ciliary pits. Scale bars: A, C = 50 µm; B, G = 10 µm; D, H = 20 µm; E = 2 µm; F = 5 µm."figureDoi="http://doi.org/10.5281/zenodo.10803996"httpUri="https://zenodo.org/record/10803996/files/figure.png"pageId="9"pageNumber="55">Fig. 5B, G</figureCitation>
), ciliated pits distributed dorsally close to the base of dorsal cirri. Dorsal cirri alternating in length, on chaetiger 1 about four times as long as width of segment (
); on chaetiger 2 absent; on chaetigers 3, 5 and 7, shorter than width of corresponding segments; on chaetigers 4, 6, 8 and 9, three to four times as long as width of corresponding segment (
); from chaetiger 10 onwards, dorsal cirri with regular alternation in length, short cirri shorter than corresponding segment, long cirri three to five times as long as corresponding segment (
<figureCitationid="13692A1CCB222E48D63B1A7A037BFE9C"box="[1290,1386,300,326]"captionStart="Fig"captionStartId="12.[187,230,1928,1954]"captionTargetBox="[187,1398,562,1882]"captionTargetId="figure-87@12.[187,1398,561,1882]"captionTargetPageId="12"captionText="Fig. 4. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Anterior body, ventral view. B. Midbody parapodium, with dorsal cirrus and parapodial glands, dorso-lateral view. C–D. Midbody and posterior end, dorsal view. Scale bars: A, C–D = 0.2 mm; B = 15 µm."figureDoi="http://doi.org/10.5281/zenodo.10803994"httpUri="https://zenodo.org/record/10803994/files/figure.png"pageId="10"pageNumber="56">Fig. 4D</figureCitation>
). Antennae, peristomial and dorsal cirri with cirrophores (
<figureCitationid="13692A1CCB222E48D0A91A1905CEFEB0"box="[920,991,335,362]"captionStart="Fig"captionStartId="12.[187,230,1928,1954]"captionTargetBox="[187,1398,562,1882]"captionTargetId="figure-87@12.[187,1398,561,1882]"captionTargetPageId="12"captionText="Fig. 4. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Anterior body, ventral view. B. Midbody parapodium, with dorsal cirrus and parapodial glands, dorso-lateral view. C–D. Midbody and posterior end, dorsal view. Scale bars: A, C–D = 0.2 mm; B = 15 µm."figureDoi="http://doi.org/10.5281/zenodo.10803994"httpUri="https://zenodo.org/record/10803994/files/figure.png"pageId="10"pageNumber="56">4B, D</figureCitation>
,
<figureCitationid="13692A1CCB222E48D0D81A190246FEB3"box="[1001,1111,335,362]"captionStart="Fig"captionStartId="13.[189,232,1822,1848]"captionTargetBox="[189,1398,485,1778]"captionTargetId="figure-70@13.[188,1399,484,1779]"captionTargetPageId="13"captionText="Fig. 5. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A. Anterior body, dorsal view. B. Details of prostomium, peristomium, and nuchal organs, dorsal view. C. Anterior body of specimen with retracted nuchal organs, dorsal view. D. Anterior end, dorsal view. E–F. Details of retracted ciliated nuchal organs. G. Anterior segments showing details of ciliary pits, dorsal view. H. Posterior end, dorsal view. Red arrows pointing to ciliated nuchal organs, white arrows pointing to ciliary pits. Scale bars: A, C = 50 µm; B, G = 10 µm; D, H = 20 µm; E = 2 µm; F = 5 µm."figureDoi="http://doi.org/10.5281/zenodo.10803996"httpUri="https://zenodo.org/record/10803996/files/figure.png"pageId="10"pageNumber="56">5A–D, G</figureCitation>
). Ventral cirri digitiform, shorter than parapodial lobes, inserted distally, extending beyond parapodial lobes, shorter towards posterior body (
<figureCitationid="13692A1CCB222E48D2B01AC0041AFE6A"box="[385,523,406,432]"captionStart="Fig"captionStartId="12.[187,230,1928,1954]"captionTargetBox="[187,1398,562,1882]"captionTargetId="figure-87@12.[187,1398,561,1882]"captionTargetPageId="12"captionText="Fig. 4. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Anterior body, ventral view. B. Midbody parapodium, with dorsal cirrus and parapodial glands, dorso-lateral view. C–D. Midbody and posterior end, dorsal view. Scale bars: A, C–D = 0.2 mm; B = 15 µm."figureDoi="http://doi.org/10.5281/zenodo.10803994"httpUri="https://zenodo.org/record/10803994/files/figure.png"pageId="10"pageNumber="56">Figs 4A–B</figureCitation>
,
<figureCitationid="13692A1CCB222E48D12D1AC00455FE6B"box="[540,580,406,433]"captionStart="Fig"captionStartId="13.[189,232,1822,1848]"captionTargetBox="[189,1398,485,1778]"captionTargetId="figure-70@13.[188,1399,484,1779]"captionTargetPageId="13"captionText="Fig. 5. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A. Anterior body, dorsal view. B. Details of prostomium, peristomium, and nuchal organs, dorsal view. C. Anterior body of specimen with retracted nuchal organs, dorsal view. D. Anterior end, dorsal view. E–F. Details of retracted ciliated nuchal organs. G. Anterior segments showing details of ciliary pits, dorsal view. H. Posterior end, dorsal view. Red arrows pointing to ciliated nuchal organs, white arrows pointing to ciliary pits. Scale bars: A, C = 50 µm; B, G = 10 µm; D, H = 20 µm; E = 2 µm; F = 5 µm."figureDoi="http://doi.org/10.5281/zenodo.10803996"httpUri="https://zenodo.org/record/10803996/files/figure.png"pageId="10"pageNumber="56">5H</figureCitation>
<figureCitationid="13692A1CCB222E48D38C1AEF06F2FE09"box="[189,227,441,467]"captionStart="Fig"captionStartId="12.[187,230,1928,1954]"captionTargetBox="[187,1398,562,1882]"captionTargetId="figure-87@12.[187,1398,561,1882]"captionTargetPageId="12"captionText="Fig. 4. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Anterior body, ventral view. B. Midbody parapodium, with dorsal cirrus and parapodial glands, dorso-lateral view. C–D. Midbody and posterior end, dorsal view. Scale bars: A, C–D = 0.2 mm; B = 15 µm."figureDoi="http://doi.org/10.5281/zenodo.10803994"httpUri="https://zenodo.org/record/10803994/files/figure.png"pageId="10"pageNumber="56">4B</figureCitation>
); parapodial glands presents after proventricle, close to bases of parapodial lobes, with rounded to subpentagonal granules (
<figureCitationid="13692A1CCB222E48D2D41A8A047AFE2C"box="[485,619,476,502]"captionStart="Fig"captionStartId="10.[191,234,1892,1918]"captionTargetBox="[189,1400,823,1850]"captionTargetId="figure-225@10.[189,1400,823,1850]"captionTargetPageId="10"captionText="Fig. 2. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Whole body of methyl green stained specimen, dorsal view. B. Midbody of methyl green stained specimen, white arrows showing parapodial glands, black arrows showing digestive tube content.C. Midbody parapodial glands on a not stained specimen. Scale bars: A = 0.22 mm; B = 0.15 mm; C = 0.1 mm."figureDoi="http://doi.org/10.5281/zenodo.10803988"httpUri="https://zenodo.org/record/10803988/files/figure.png"pageId="10"pageNumber="56">Figs 2A–C</figureCitation>
,
<figureCitationid="13692A1CCB222E48D1461A8A04D3FE2C"box="[631,706,476,502]"captionStart="Fig"captionStartId="12.[187,230,1928,1954]"captionTargetBox="[187,1398,562,1882]"captionTargetId="figure-87@12.[187,1398,561,1882]"captionTargetPageId="12"captionText="Fig. 4. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Anterior body, ventral view. B. Midbody parapodium, with dorsal cirrus and parapodial glands, dorso-lateral view. C–D. Midbody and posterior end, dorsal view. Scale bars: A, C–D = 0.2 mm; B = 15 µm."figureDoi="http://doi.org/10.5281/zenodo.10803994"httpUri="https://zenodo.org/record/10803994/files/figure.png"pageId="10"pageNumber="56">4B–D</figureCitation>
). Parapodia with three falcigers each throughout; shafts of falcigers smooth, homogomph, with irregular, usually quadrilobate acute tips (
<figureCitationid="13692A1CCB222E48D7501AA902F7FDC3"box="[1121,1254,511,537]"captionStart="Fig"captionStartId="14.[189,232,1928,1954]"captionTargetBox="[189,1398,296,1844]"captionTargetId="figure-11@14.[189,1398,296,1856]"captionTargetPageId="14"captionText="Fig. 6. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A–C. Falciger chaetae, anterior, mid- and posterior body, respectively. D–F. Dorsal simple chaetae, anterior, mid- and posterior body, respectively. G. Acicula. Scale bar = 6 µm."figureDoi="http://doi.org/10.5281/zenodo.10803998"httpUri="https://zenodo.org/record/10803998/files/figure.png"pageId="10"pageNumber="56">Figs 6A–C</figureCitation>
,
<figureCitationid="13692A1CCB222E48D7C21AA90307FDC3"box="[1267,1302,511,537]"captionStart="Fig"captionStartId="15.[189,232,1892,1918]"captionTargetBox="[190,1397,297,1809]"captionTargetId="figure-17@15.[189,1398,296,1810]"captionTargetPageId="15"captionText="Fig. 7. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A–B. Falciger chaetae, anterior body. C–D. Dorsal simple chaetae, anterior body. E–F. Falciger chaetae, midbody. G. Dorsal simple chaeta, midbody. H–J. Falciger chaetae, posterior body. K. Dorsal simple chaeta, posterior body. Scale bars: A, C, F = 5 µm; B, D, G, I–K = 2 µm; E, H = 10 µm."figureDoi="http://doi.org/10.5281/zenodo.10804000"httpUri="https://zenodo.org/record/10804000/files/figure.png"pageId="10"pageNumber="56">7F</figureCitation>
); blades bidentate, with teeth about same size or distal tooth slightly larger throughout; blades spinulated, with short and thin spines (
<figureCitationid="13692A1CCB222E48D2FA19100443FDBA"box="[459,594,582,608]"captionStart="Fig"captionStartId="14.[189,232,1928,1954]"captionTargetBox="[189,1398,296,1844]"captionTargetId="figure-11@14.[189,1398,296,1856]"captionTargetPageId="14"captionText="Fig. 6. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A–C. Falciger chaetae, anterior, mid- and posterior body, respectively. D–F. Dorsal simple chaetae, anterior, mid- and posterior body, respectively. G. Acicula. Scale bar = 6 µm."figureDoi="http://doi.org/10.5281/zenodo.10803998"httpUri="https://zenodo.org/record/10803998/files/figure.png"pageId="10"pageNumber="56">Figs 6A–C</figureCitation>
,
<figureCitationid="13692A1CCB222E48D151191004F4FDBA"box="[608,741,582,608]"captionStart="Fig"captionStartId="15.[189,232,1892,1918]"captionTargetBox="[190,1397,297,1809]"captionTargetId="figure-17@15.[189,1398,296,1810]"captionTargetPageId="15"captionText="Fig. 7. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A–B. Falciger chaetae, anterior body. C–D. Dorsal simple chaetae, anterior body. E–F. Falciger chaetae, midbody. G. Dorsal simple chaeta, midbody. H–J. Falciger chaetae, posterior body. K. Dorsal simple chaeta, posterior body. Scale bars: A, C, F = 5 µm; B, D, G, I–K = 2 µm; E, H = 10 µm."figureDoi="http://doi.org/10.5281/zenodo.10804000"httpUri="https://zenodo.org/record/10804000/files/figure.png"pageId="10"pageNumber="56">7A–B, F, J</figureCitation>
); blades varying in length on dorsalmost, intermediate and ventralmost chaetae, with 6 µm, 12 µm and 8 µm on anterior parapodia (
<figureCitationid="13692A1CCB222E48D76C193F02D0FD59"box="[1117,1217,617,643]"captionStart="Fig"captionStartId="14.[189,232,1928,1954]"captionTargetBox="[189,1398,296,1844]"captionTargetId="figure-11@14.[189,1398,296,1856]"captionTargetPageId="14"captionText="Fig. 6. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A–C. Falciger chaetae, anterior, mid- and posterior body, respectively. D–F. Dorsal simple chaetae, anterior, mid- and posterior body, respectively. G. Acicula. Scale bar = 6 µm."figureDoi="http://doi.org/10.5281/zenodo.10803998"httpUri="https://zenodo.org/record/10803998/files/figure.png"pageId="10"pageNumber="56">Figs 6A</figureCitation>
,
<figureCitationid="13692A1CCB222E48D7FF193F0308FD59"box="[1230,1305,617,643]"captionStart="Fig"captionStartId="15.[189,232,1892,1918]"captionTargetBox="[190,1397,297,1809]"captionTargetId="figure-17@15.[189,1398,296,1810]"captionTargetPageId="15"captionText="Fig. 7. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A–B. Falciger chaetae, anterior body. C–D. Dorsal simple chaetae, anterior body. E–F. Falciger chaetae, midbody. G. Dorsal simple chaeta, midbody. H–J. Falciger chaetae, posterior body. K. Dorsal simple chaeta, posterior body. Scale bars: A, C, F = 5 µm; B, D, G, I–K = 2 µm; E, H = 10 µm."figureDoi="http://doi.org/10.5281/zenodo.10804000"httpUri="https://zenodo.org/record/10804000/files/figure.png"pageId="10"pageNumber="56">7A–B</figureCitation>
); 7 µm, 13 µm and 10 µm long on midbody (
<figureCitationid="13692A1CCB222E48D1B019DA04F2FD7C"box="[641,739,652,678]"captionStart="Fig"captionStartId="14.[189,232,1928,1954]"captionTargetBox="[189,1398,296,1844]"captionTargetId="figure-11@14.[189,1398,296,1856]"captionTargetPageId="14"captionText="Fig. 6. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A–C. Falciger chaetae, anterior, mid- and posterior body, respectively. D–F. Dorsal simple chaetae, anterior, mid- and posterior body, respectively. G. Acicula. Scale bar = 6 µm."figureDoi="http://doi.org/10.5281/zenodo.10803998"httpUri="https://zenodo.org/record/10803998/files/figure.png"pageId="10"pageNumber="56">Figs 6B</figureCitation>
,
<figureCitationid="13692A1CCB222E48D1C019DA0527FD7C"box="[753,822,652,678]"captionStart="Fig"captionStartId="15.[189,232,1892,1918]"captionTargetBox="[190,1397,297,1809]"captionTargetId="figure-17@15.[189,1398,296,1810]"captionTargetPageId="15"captionText="Fig. 7. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A–B. Falciger chaetae, anterior body. C–D. Dorsal simple chaetae, anterior body. E–F. Falciger chaetae, midbody. G. Dorsal simple chaeta, midbody. H–J. Falciger chaetae, posterior body. K. Dorsal simple chaeta, posterior body. Scale bars: A, C, F = 5 µm; B, D, G, I–K = 2 µm; E, H = 10 µm."figureDoi="http://doi.org/10.5281/zenodo.10804000"httpUri="https://zenodo.org/record/10804000/files/figure.png"pageId="10"pageNumber="56">7E–F</figureCitation>
); and 5 µm, 12 µm and 9 µm on posterior body (
<figureCitationid="13692A1CCB222E48D3F619F9073BFD13"box="[199,298,687,713]"captionStart="Fig"captionStartId="14.[189,232,1928,1954]"captionTargetBox="[189,1398,296,1844]"captionTargetId="figure-11@14.[189,1398,296,1856]"captionTargetPageId="14"captionText="Fig. 6. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A–C. Falciger chaetae, anterior, mid- and posterior body, respectively. D–F. Dorsal simple chaetae, anterior, mid- and posterior body, respectively. G. Acicula. Scale bar = 6 µm."figureDoi="http://doi.org/10.5281/zenodo.10803998"httpUri="https://zenodo.org/record/10803998/files/figure.png"pageId="10"pageNumber="56">Figs 6C</figureCitation>
,
<figureCitationid="13692A1CCB222E48D20B19F9076DFD13"box="[314,380,687,713]"captionStart="Fig"captionStartId="15.[189,232,1892,1918]"captionTargetBox="[190,1397,297,1809]"captionTargetId="figure-17@15.[189,1398,296,1810]"captionTargetPageId="15"captionText="Fig. 7. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A–B. Falciger chaetae, anterior body. C–D. Dorsal simple chaetae, anterior body. E–F. Falciger chaetae, midbody. G. Dorsal simple chaeta, midbody. H–J. Falciger chaetae, posterior body. K. Dorsal simple chaeta, posterior body. Scale bars: A, C, F = 5 µm; B, D, G, I–K = 2 µm; E, H = 10 µm."figureDoi="http://doi.org/10.5281/zenodo.10804000"httpUri="https://zenodo.org/record/10804000/files/figure.png"pageId="10"pageNumber="56">7H–J</figureCitation>
). Dorsal simple chaetae present from chaetigers 3–4, tapering distally, with rounded tip, subdistally spinulated on anterior body (
<figureCitationid="13692A1CCB222E48D1FD1984053EFD36"box="[716,815,722,748]"captionStart="Fig"captionStartId="14.[189,232,1928,1954]"captionTargetBox="[189,1398,296,1844]"captionTargetId="figure-11@14.[189,1398,296,1856]"captionTargetPageId="14"captionText="Fig. 6. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A–C. Falciger chaetae, anterior, mid- and posterior body, respectively. D–F. Dorsal simple chaetae, anterior, mid- and posterior body, respectively. G. Acicula. Scale bar = 6 µm."figureDoi="http://doi.org/10.5281/zenodo.10803998"httpUri="https://zenodo.org/record/10803998/files/figure.png"pageId="10"pageNumber="56">Figs 6D</figureCitation>
,
<figureCitationid="13692A1CCB222E48D00C19850597FD37"box="[829,902,723,749]"captionStart="Fig"captionStartId="15.[189,232,1892,1918]"captionTargetBox="[190,1397,297,1809]"captionTargetId="figure-17@15.[189,1398,296,1810]"captionTargetPageId="15"captionText="Fig. 7. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A–B. Falciger chaetae, anterior body. C–D. Dorsal simple chaetae, anterior body. E–F. Falciger chaetae, midbody. G. Dorsal simple chaeta, midbody. H–J. Falciger chaetae, posterior body. K. Dorsal simple chaeta, posterior body. Scale bars: A, C, F = 5 µm; B, D, G, I–K = 2 µm; E, H = 10 µm."figureDoi="http://doi.org/10.5281/zenodo.10804000"httpUri="https://zenodo.org/record/10804000/files/figure.png"pageId="10"pageNumber="56">7C–D</figureCitation>
), slightly sigmoid towards posterior body (
<figureCitationid="13692A1CCB242E4ED3F41A5F0751FEF9"box="[197,320,265,291]"captionStart="Fig"captionStartId="14.[189,232,1928,1954]"captionTargetBox="[189,1398,296,1844]"captionTargetId="figure-11@14.[189,1398,296,1856]"captionTargetPageId="14"captionText="Fig. 6. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A–C. Falciger chaetae, anterior, mid- and posterior body, respectively. D–F. Dorsal simple chaetae, anterior, mid- and posterior body, respectively. G. Acicula. Scale bar = 6 µm."figureDoi="http://doi.org/10.5281/zenodo.10803998"httpUri="https://zenodo.org/record/10803998/files/figure.png"pageId="12"pageNumber="58">Figs 6E–F</figureCitation>
,
<figureCitationid="13692A1CCB242E4ED27A1A5F0787FEF9"box="[331,406,265,291]"captionStart="Fig"captionStartId="15.[189,232,1892,1918]"captionTargetBox="[190,1397,297,1809]"captionTargetId="figure-17@15.[189,1398,296,1810]"captionTargetPageId="15"captionText="Fig. 7. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A–B. Falciger chaetae, anterior body. C–D. Dorsal simple chaetae, anterior body. E–F. Falciger chaetae, midbody. G. Dorsal simple chaeta, midbody. H–J. Falciger chaetae, posterior body. K. Dorsal simple chaeta, posterior body. Scale bars: A, C, F = 5 µm; B, D, G, I–K = 2 µm; E, H = 10 µm."figureDoi="http://doi.org/10.5281/zenodo.10804000"httpUri="https://zenodo.org/record/10804000/files/figure.png"pageId="12"pageNumber="58">7G, K</figureCitation>
). One acicula per parapodium throughout, distally inflated, hollow (
<figureCitationid="13692A1CCB242E4ED79A1A5F0318FEF9"box="[1195,1289,265,291]"captionStart="Fig"captionStartId="14.[189,232,1928,1954]"captionTargetBox="[189,1398,296,1844]"captionTargetId="figure-11@14.[189,1398,296,1856]"captionTargetPageId="14"captionText="Fig. 6. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A–C. Falciger chaetae, anterior, mid- and posterior body, respectively. D–F. Dorsal simple chaetae, anterior, mid- and posterior body, respectively. G. Acicula. Scale bar = 6 µm."figureDoi="http://doi.org/10.5281/zenodo.10803998"httpUri="https://zenodo.org/record/10803998/files/figure.png"pageId="12"pageNumber="58">Fig. 6G</figureCitation>
), with tip protruding from parapodial lobe (
<figureCitationid="13692A1CCB242E4ED1721A7A048FFE9C"box="[579,670,300,326]"captionStart="Fig"captionStartId="12.[187,230,1928,1954]"captionTargetBox="[187,1398,562,1882]"captionTargetId="figure-87@12.[187,1398,561,1882]"captionTargetPageId="12"captionText="Fig. 4. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Anterior body, ventral view. B. Midbody parapodium, with dorsal cirrus and parapodial glands, dorso-lateral view. C–D. Midbody and posterior end, dorsal view. Scale bars: A, C–D = 0.2 mm; B = 15 µm."figureDoi="http://doi.org/10.5281/zenodo.10803994"httpUri="https://zenodo.org/record/10803994/files/figure.png"pageId="12"pageNumber="58">Fig. 4B</figureCitation>
). Pharynx through about 4 segments (
<figureCitationid="13692A1CCB242E4ED7641A7A02A4FE9C"box="[1109,1205,300,326]"captionStart="Fig"captionStartId="10.[191,234,1892,1918]"captionTargetBox="[189,1400,823,1850]"captionTargetId="figure-225@10.[189,1400,823,1850]"captionTargetPageId="10"captionText="Fig. 2. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Whole body of methyl green stained specimen, dorsal view. B. Midbody of methyl green stained specimen, white arrows showing parapodial glands, black arrows showing digestive tube content.C. Midbody parapodial glands on a not stained specimen. Scale bars: A = 0.22 mm; B = 0.15 mm; C = 0.1 mm."figureDoi="http://doi.org/10.5281/zenodo.10803988"httpUri="https://zenodo.org/record/10803988/files/figure.png"pageId="12"pageNumber="58">Figs 2A</figureCitation>
), with conical to rhomboidal pharyngeal tooth located on anterior rim, surrounded by 10 soft papillae; proventricle through around 2.5 segments, with 14–15 muscle cell rows (
<figureCitationid="13692A1CCB242E4ED0BD1A2405FEFE57"box="[908,1007,370,397]"captionStart="Fig"captionStartId="10.[191,234,1892,1918]"captionTargetBox="[189,1400,823,1850]"captionTargetId="figure-225@10.[189,1400,823,1850]"captionTargetPageId="10"captionText="Fig. 2. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Whole body of methyl green stained specimen, dorsal view. B. Midbody of methyl green stained specimen, white arrows showing parapodial glands, black arrows showing digestive tube content.C. Midbody parapodial glands on a not stained specimen. Scale bars: A = 0.22 mm; B = 0.15 mm; C = 0.1 mm."figureDoi="http://doi.org/10.5281/zenodo.10803988"httpUri="https://zenodo.org/record/10803988/files/figure.png"pageId="12"pageNumber="58">Figs 2A</figureCitation>
<figureCitationid="13692A1CCB242E4ED6211A240363FE57"box="[1296,1394,370,397]"captionStart="Fig"captionStartId="12.[187,230,1928,1954]"captionTargetBox="[187,1398,562,1882]"captionTargetId="figure-87@12.[187,1398,561,1882]"captionTargetPageId="12"captionText="Fig. 4. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Anterior body, ventral view. B. Midbody parapodium, with dorsal cirrus and parapodial glands, dorso-lateral view. C–D. Midbody and posterior end, dorsal view. Scale bars: A, C–D = 0.2 mm; B = 15 µm."figureDoi="http://doi.org/10.5281/zenodo.10803994"httpUri="https://zenodo.org/record/10803994/files/figure.png"pageId="12"pageNumber="58">Figs 4C</figureCitation>
,
<figureCitationid="13692A1CCB242E4ED38F1AC006F4FE6B"box="[190,229,406,433]"captionStart="Fig"captionStartId="13.[189,232,1822,1848]"captionTargetBox="[189,1398,485,1778]"captionTargetId="figure-70@13.[188,1399,484,1779]"captionTargetPageId="13"captionText="Fig. 5. Westheidesyllis splendida sp. nov., non-type specimen (MNRJP), SEM. A. Anterior body, dorsal view. B. Details of prostomium, peristomium, and nuchal organs, dorsal view. C. Anterior body of specimen with retracted nuchal organs, dorsal view. D. Anterior end, dorsal view. E–F. Details of retracted ciliated nuchal organs. G. Anterior segments showing details of ciliary pits, dorsal view. H. Posterior end, dorsal view. Red arrows pointing to ciliated nuchal organs, white arrows pointing to ciliary pits. Scale bars: A, C = 50 µm; B, G = 10 µm; D, H = 20 µm; E = 2 µm; F = 5 µm."figureDoi="http://doi.org/10.5281/zenodo.10803996"httpUri="https://zenodo.org/record/10803996/files/figure.png"pageId="12"pageNumber="58">5H</figureCitation>
), with pair of cirri about same length of long posterior body dorsal cirri.
<taxonomicNameid="4C524D1ACB222E48D2291C330457F8A5"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"box="[280,582,1893,1919]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="10"pageNumber="56"phylum="Annelida"rank="species"species="splendida"status="sp. nov.">
<taxonomicNameid="4C524D1ACB232E49D2251CF00450F81A"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"box="[276,577,1958,1984]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="11"pageNumber="57"phylum="Annelida"rank="species"species="splendida"status="sp. nov.">
<taxonomicNameid="4C524D1ACB242E4ED2291CDE0456F878"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"box="[280,583,1928,1954]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="12"pageNumber="58"phylum="Annelida"rank="species"species="splendida"status="sp. nov.">
<taxonomicNameid="4C524D1ACB252E4FD2C21A61050FFE8B"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"box="[499,798,311,337]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="13"pageNumber="59"phylum="Annelida"rank="species"species="splendida"status="sp. nov.">
examined in this study showed cilia at the bases of the dorsal cirri or transverse ciliary bands on the segments, as observed in other species of the genus. However, using scanning electron microscopy (SEM), a set of pits was observed, which are usually the location where these cilia are projected. These pits were observed at the bases of the dorsal cirri, located almost above the parapodial glands and arranged transversely, more or less in line, on anterior segments and peristomium.
<taxonomicNameid="4C524D1ACB252E4FD2201C48042DF8E2"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"box="[273,572,1822,1848]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="13"pageNumber="59"phylum="Annelida"rank="species"species="splendida"status="sp. nov.">
. Posterior end, dorsal view. Red arrows pointing to ciliated nuchal organs, white arrows pointing to ciliary pits. Scale bars: A, C = 50 µm; B, G = 10 µm; D, H = 20 µm; E = 2 µm; F = 5 µm.
<taxonomicNameid="4C524D1ACB262E4CD2291CDE0456F878"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"box="[280,583,1928,1954]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="14"pageNumber="60"phylum="Annelida"rank="species"species="splendida"status="sp. nov.">
<taxonomicNameid="4C524D1ACB272E4DD2241C330450F8A5"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"box="[277,577,1893,1919]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="15"pageNumber="61"phylum="Annelida"rank="species"species="splendida"status="sp. nov.">
<taxonomicNameid="4C524D1ACB382E52D13D1AC404A5FE71"baseAuthorityName="Ding & Westheide"baseAuthorityYear="1997"box="[524,692,401,427]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="16"pageNumber="62"phylum="Annelida"rank="species"species="corallicola">
<collectingRegionid="4996F87BCB382E52D16B1AE2053FFE14"box="[602,814,436,462]"country="Australia"name="New South Wales"pageId="16"pageNumber="62">New South Wales</collectingRegion>
and Lizard Island), all in the Pacific Ocean. Both species lack eyes, share the overall body morphology and have similar compound chaetae. However, there are several differences between them. For instance,
<taxonomicNameid="4C524D1ACB382E52D0251AAD05BFFDCE"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"box="[788,942,506,533]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="16"pageNumber="62"phylum="Annelida"rank="species"species="splendida"status="sp. nov.">
lacks eyespots, has the median antenna inserted medially on the prostomium, aciculae that are distally hollow with tips protruding from the parapodial lobes, a proventricle extending for ~2.5 segments, and internal glands at the bases of the parapodia. Conversely,
<taxonomicNameid="4C524D1ACB382E52D131193304B9FDA4"baseAuthorityName="Ding & Westheide"baseAuthorityYear="1997"box="[512,680,612,639]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="16"pageNumber="62"phylum="Annelida"rank="species"species="corallicola">
has eyespots, the median antenna inserted posteriorly on the prostomium, aciculae distally knobbed but not hollow nor protruding from the parapodial lobes (
<bibRefCitationid="EFC34B68CB382E52D62F19D1076AFD1F"author="Ding Z. & Westheide W."pageId="16"pageNumber="62"pagination="277 - 292"refId="ref8018"refString="Ding Z. & Westheide W. 1997. New records and descriptions of tidal and subtidal syllid species (Polychaeta) from the Chinese coast. Bulletin of Marine Science 60 (2): 277 - 292."type="journal article"year="1997">Ding & Westheide 1997</bibRefCitation>
: fig. 6d–e, i), a proventricle extending for about 1.5 segments (
<bibRefCitationid="EFC34B68CB382E52D76519FC0362FD1F"author="Ding Z. & Westheide W."box="[1108,1395,682,709]"pageId="16"pageNumber="62"pagination="277 - 292"refId="ref8018"refString="Ding Z. & Westheide W. 1997. New records and descriptions of tidal and subtidal syllid species (Polychaeta) from the Chinese coast. Bulletin of Marine Science 60 (2): 277 - 292."type="journal article"year="1997">Ding & Westheide 1997</bibRefCitation>
: fig. 6a), and lacks internal glands (
<bibRefCitationid="EFC34B68CB382E52D17719980570FD32"author="Ding Z. & Westheide W."box="[582,865,718,744]"pageId="16"pageNumber="62"pagination="277 - 292"refId="ref8018"refString="Ding Z. & Westheide W. 1997. New records and descriptions of tidal and subtidal syllid species (Polychaeta) from the Chinese coast. Bulletin of Marine Science 60 (2): 277 - 292."type="journal article"year="1997">Ding & Westheide 1997</bibRefCitation>
;
<bibRefCitationid="EFC34B68CB382E52D05D199802DCFD3D"author="San Martin G. & Hutchings P."box="[876,1229,717,744]"pageId="16"pageNumber="62"pagination="257 - 370"refId="ref9706"refString="San Martin G. & Hutchings P. 2006. Eusyllinae (Polychaeta: Syllidae) from Australia with the description of a new genus and fifteen new species. Records of the Australian Museum 58: 257 - 370. https: // doi. org / 10.3853 / j. 0067 - 1975.58.2006.1466"type="journal article"year="2006">San Martín & Hutchings 2006</bibRefCitation>
). Additionally, specimens of
<taxonomicNameid="4C524D1ACB382E52D26C19A407E7FCD1"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"box="[349,502,753,779]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="16"pageNumber="62"phylum="Annelida"rank="species"species="splendida">
examined herein showed signs of cilia and ciliary pits indicating differences in the ciliation pattern to that found in
<taxonomicNameid="4C524D1ACB382E52D1B21843053AFCF4"baseAuthorityName="Ding & Westheide"baseAuthorityYear="1997"box="[643,811,788,815]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="16"pageNumber="62"phylum="Annelida"rank="species"species="corallicola">
, that has tufts dorsally and ventrally located close to the bases of the parapodia and on the pygidium (
<bibRefCitationid="EFC34B68CB382E52D02418610227FC8B"author="Ding Z. & Westheide W."box="[789,1078,823,849]"pageId="16"pageNumber="62"pagination="277 - 292"refId="ref8018"refString="Ding Z. & Westheide W. 1997. New records and descriptions of tidal and subtidal syllid species (Polychaeta) from the Chinese coast. Bulletin of Marine Science 60 (2): 277 - 292."type="journal article"year="1997">Ding & Westheide 1997</bibRefCitation>
<taxonomicNameid="4C524D1ACB382E52D2F3182F04FFFC49"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"box="[450,750,889,915]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="16"pageNumber="62"phylum="Annelida"rank="species"species="splendida"status="sp. nov.">
is the only known species of the genus where glands have been observed. Although outside the scope of the present paper, some ideas could be shed about functions of these glands in
<taxonomicNameid="4C524D1ACB382E52D16618E90519FC03"authorityName="San Martin, Lopez & Aguado"authorityYear="2009"box="[599,776,959,985]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="16"pageNumber="62"phylum="Annelida"rank="genus">
. The presence of glands, especially those associated to the parapodia, is commonly reported in interstitial species on soft-bottom substrates (
<bibRefCitationid="EFC34B68CB382E52D7FC18B406EDFBFA"author="Worsaae K. & Kerbl A. & Domenico M. D. & Gonzalez B. C. & Bekkouche N. & Martinez A."pageId="16"pageNumber="62"pagination="77"refId="ref9865"refString="Worsaae K., Kerbl A., Domenico M. D., Gonzalez B. C., Bekkouche N. & Martinez A. 2021. Interstitial Annelida. Diversity 13: 77. https: // doi. org / 10.3390 / d 13020077"type="journal article"year="2021">
). Accordingly, the glands now observed could be related to some adhesive ability to deal with sediment grains, which could provide greater stability to the substrate, or enhance camouflage, and reduce palatability, both potentially decreasing predation risk. Indeed, various specimens of
<taxonomicNameid="4C524D1ACB382E52D7EC1F1B0367FBBC"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"box="[1245,1398,1100,1126]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="16"pageNumber="62"phylum="Annelida"rank="species"species="splendida">
were covered in small grains across the body. Also, glands could be associated to reproduction processes in the animals, as has been indicated in other syllids (
<bibRefCitationid="EFC34B68CB382E52D00E1FC405F8FB76"author="Haswell W. A."box="[831,1001,1170,1196]"pageId="16"pageNumber="62"pagination="217 - 245"refId="ref8539"refString="Haswell W. A. 1920. The Exogoneae. Journal of the Linnean Society of London 34: 217 - 245. https: // doi. org / 10.1111 / j. 1096 - 3642.1920. tb 01788. x"type="journal article"year="1920">Haswell 1920</bibRefCitation>
), although, to our knowledge, no information on the reproduction of
<taxonomicNameid="4C524D1ACB382E52D15F1FE30531FB15"authorityName="San Martin, Lopez & Aguado"authorityYear="2009"box="[622,800,1205,1231]"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="16"pageNumber="62"phylum="Annelida"rank="genus">
<taxonomicNameid="4C524D1ACB382E52D6681FE0073EFB29"authorityName="Nascimento & Fukuda & Paiva"authorityYear="2024"class="Polychaeta"family="Syllidae"genus="Westheidesyllis"kingdom="Animalia"order="Phyllodocida"pageId="16"pageNumber="62"phylum="Annelida"rank="species"species="splendida"status="sp. nov.">
<figureCitationid="13692A1CCB382E52D0891F8F0229FB29"box="[952,1080,1241,1267]"captionStart="Fig"captionStartId="10.[191,234,1892,1918]"captionTargetBox="[189,1400,823,1850]"captionTargetId="figure-225@10.[189,1400,823,1850]"captionTargetPageId="10"captionText="Fig. 2. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Whole body of methyl green stained specimen, dorsal view. B. Midbody of methyl green stained specimen, white arrows showing parapodial glands, black arrows showing digestive tube content.C. Midbody parapodial glands on a not stained specimen. Scale bars: A = 0.22 mm; B = 0.15 mm; C = 0.1 mm."figureDoi="http://doi.org/10.5281/zenodo.10803988"httpUri="https://zenodo.org/record/10803988/files/figure.png"pageId="16"pageNumber="62">Fig. 2A–B</figureCitation>
), but they can be relatively easily visualized without the aid of this technique (
<figureCitationid="13692A1CCB382E52D0231FAA057EFACC"box="[786,879,1276,1302]"captionStart="Fig"captionStartId="10.[191,234,1892,1918]"captionTargetBox="[189,1400,823,1850]"captionTargetId="figure-225@10.[189,1400,823,1850]"captionTargetPageId="10"captionText="Fig. 2. Westheidesyllis splendida sp. nov., paratype (MZUSP 6099). A. Whole body of methyl green stained specimen, dorsal view. B. Midbody of methyl green stained specimen, white arrows showing parapodial glands, black arrows showing digestive tube content.C. Midbody parapodial glands on a not stained specimen. Scale bars: A = 0.22 mm; B = 0.15 mm; C = 0.1 mm."figureDoi="http://doi.org/10.5281/zenodo.10803988"httpUri="https://zenodo.org/record/10803988/files/figure.png"pageId="16"pageNumber="62">Fig. 2C</figureCitation>
