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<mods:title id="5A05FFFBD705511611803D411D17B711">A new species of Paranerilla Jouin &amp; Swedmark, 1965 (Annelida: Polychaeta) from Brazil</mods:title>
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<mods:namePart id="B5D992C8351CA1889EBC00FC3C201D5A">Mendes, Samuel Lucas da Silva Delgado</mods:namePart>
<mods:affiliation id="7994FC6B1CD724F17FBB4DBF3F826C8C">Universidade Federal do Rio de Janeiro, Programa de Pós-graduação em Zoologia, Museu Nacional, Quinta da Boa Vista, São Cristóvão, Rio de Janeiro, Brazil</mods:affiliation>
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<mods:namePart id="3B0D12A03F2ADD3BB95316C69D9C460F">Rodrigues, Jaqueline Carvalho</mods:namePart>
<mods:affiliation id="DB3AE4881F2455F1939B25EC0EA9348E">Fundação Oswaldo Cruz (Fiocruz), Av. Brasil, 4365, Manguinhos, Rio de Janeiro, Brazil</mods:affiliation>
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<mods:namePart id="146BC4737732750E82D193E9D76EB7C7">Rizzo, Alexandra E.</mods:namePart>
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<mods:affiliation id="590845030C733E516F9142BEF4103DB3">Universidade do Estado do Rio de Janeiro, Departamento de Zoologia, Rua São Francisco Xavier, 524, Pavilhão Haroldo Lisboa Cunha, 20550 - 900 Maracana, Rio de Janeiro, Brazil.</mods:affiliation>
<mods:nameIdentifier id="46F4ACD386888B1F81879AD4BA47FD1B" type="email">aerizzo@hotmail.com</mods:nameIdentifier>
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<mods:date id="7901ED67B9383A6BF547DFB2BD18F680">2024</mods:date>
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<heading id="D0B9AD23FFB2FFBDFDA6F9EC82EB6430" box="[609,979,1595,1622]" centered="true" fontSize="11" level="2" pageId="3" pageNumber="147" reason="2">
<taxonomicName id="4C4E61CCFFB2FFBDFDA6F9EC82496430" authorityName="Mendes &amp; Rodrigues &amp; Rizzo" authorityYear="2024" box="[609,881,1595,1622]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="3" pageNumber="147" phylum="Annelida" rank="species" species="schiavettii" status="sp. nov.">
<emphasis id="B93AC65DFFB2FFBDFDA6F9EC82496430" bold="true" box="[609,881,1595,1622]" italics="true" pageId="3" pageNumber="147">Paranerilla schiavettii</emphasis>
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<taxonomicNameLabel id="A2097B26FFB2FFBDFCBFF9EB82EB6430" box="[888,979,1596,1622]" pageId="3" pageNumber="147" rank="species">sp. nov.</taxonomicNameLabel>
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urn:lsid:zoobank.org:act:
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<paragraph id="8BF11A4FFFB2FFBDFD20F955827564FA" blockId="3.[358,1230,1595,1692]" box="[743,845,1666,1692]" pageId="3" pageNumber="147">
<figureCitation id="137506CAFFB2FFBDFD20F955827564FA" box="[743,845,1666,1692]" captionStart-0="Fig" captionStart-1="Fig" captionStartId-0="4.[189,232,1752,1778]" captionStartId-1="6.[189,232,1787,1813]" captionTargetBox-0="[194,1393,557,1708]" captionTargetBox-1="[260,1327,307,1743]" captionTargetId-0="figure-47@4.[189,1398,551,1714]" captionTargetId-1="figure-12@6.[256,1331,300,1749]" captionTargetPageId-0="4" captionText-0="Fig. 2 Paranerilla schiavettii sp. nov., under optical microscopy and SEM. A. Dorsal view of anterior body region of a specimen stained with Shirlastain A. B. Lateral view of mid body chaetal fascicle, emphasizing the nature of spiniger compound chaetae and acicular chaetae under optical microscopy. C. Lateral view of posterior body chaetal fascicle emphasizing the nature of spiniger compound chaetae and acicular chaetae under electron microscopy. D. Ventral view of body anterior region and the two chaetal fascicles of spiniger compound chaetae. Abbreviations: As = acicular spine; Ch 17 = chaetigers 17; Co = spiniger compound chaetae; F1 = chaetiger 1 anteriormost chaetal fascicle; F2 = chaetiger 1 posteriormost chaetal fascicle." captionText-1="Fig. 3 Paranerilla schiavettii sp. nov. under SEM. A. Dorsal view of anterior body region. B. Dorsal view of posterior body region. C. Dorsal view of entire body, emphasizing the number of chaetigers. D. Ventral view of body anterior region, showing the mouth ciliary plate and succeeding ciliary bands. E. Ventral view of body posterior region showing the anal cirri. F. Acicular spine of chaetiger 3 in detail. Abbreviations: Ac = anal cirrus; As = acicular spine; Ch 17 = chaetigers 17; dB1 = dorsal ciliary bands on chaetiger 1; dCP = dorsal ciliary plate; Hor = lateral horn; Mo = mouth; Pc = parapodial cirri; Pr = prostomium; vB1 = ventral ciliary band of chaetiger 1; vCP = ventral ciliary plate." figureDoi-0="http://doi.org/10.5281/zenodo.12691973" figureDoi-1="http://doi.org/10.5281/zenodo.12691985" httpUri-0="https://zenodo.org/record/12691973/files/figure.png" httpUri-1="https://zenodo.org/record/12691985/files/figure.png" pageId="3" pageNumber="147">Figs 23</figureCitation>
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<paragraph id="8BF11A4FFFB2FFBDFF7AF914800F64BB" blockId="3.[189,311,1731,1757]" box="[189,311,1731,1757]" pageId="3" pageNumber="147">
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<emphasis id="B93AC65DFFB2FFBDFF7AF914800F64BB" bold="true" box="[189,311,1731,1757]" pageId="3" pageNumber="147">Diagnosis</emphasis>
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<paragraph id="8BF11A4FFFB2FFBDFF7AF92582F965FF" blockId="3.[188,1400,1778,1945]" pageId="3" pageNumber="147">Specimens from grey to whitish color, with prostomium and segment 1 almost fused and about as long as each of the following segments. One acicular chaeta on noto- and one on neuropodia from chaetiger 3 to 7; 14 spiniger compound chaetae on chaetiger 1, 712 on chaetigers 37, both present as single pointed distal extensions following chaetal articulation. Prostomium, peristomium and entire dorsal and ventral body surfaces of segments 17 densely covered with cilia.</paragraph>
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<subSubSection id="C35449C4FFB5FFBAFF7AFEDE830363F1" pageId="4" pageNumber="148" type="etymology">
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<heading id="D0B9AD23FFB5FFBAFF7AFEDE807D6345" bold="true" box="[189,325,265,291]" fontSize="11" level="3" pageId="4" pageNumber="148" reason="3">
<emphasis id="B93AC65DFFB5FFBAFF7AFEDE807D6345" bold="true" box="[189,325,265,291]" pageId="4" pageNumber="148">Etymology</emphasis>
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<paragraph id="8BF11A4FFFB5FFBAFF7AFEE0830363F1" blockId="4.[188,1398,311,408]" pageId="4" pageNumber="148">
The specific epithet
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<emphasis id="B93AC65DFFB5FFBAFE75FEE083146337" box="[434,556,311,337]" italics="true" pageId="4" pageNumber="148">schiavettii</emphasis>
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was chosen to honor the professor and our friend Alexandre Schiavetti, for his important contributions to improve our scientific knowledge on marine ecology, especially marine protected areas in
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.
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<emphasis id="B93AC65DFFB5FFBAFF7AF90F803D6494" bold="true" box="[189,261,1752,1778]" pageId="4" pageNumber="148">Fig. 2</emphasis>
<taxonomicName id="4C4E61CCFFB5FFBAFEC9F90F83226494" authorityName="Mendes &amp; Rodrigues &amp; Rizzo" authorityYear="2024" box="[270,538,1752,1778]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="4" pageNumber="148" phylum="Annelida" rank="species" species="schiavettii" status="sp. nov.">
<emphasis id="B93AC65DFFB5FFBAFEC9F90F83226494" box="[270,538,1752,1778]" italics="true" pageId="4" pageNumber="148">Paranerilla schiavettii</emphasis>
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<taxonomicNameLabel id="A2097B26FFB5FFBAFDE4F90F83B86494" box="[547,640,1752,1778]" pageId="4" pageNumber="148" rank="species">sp. nov.</taxonomicNameLabel>
, under optical microscopy and SEM.
<emphasis id="B93AC65DFFB5FFBAFBF8F90F856C6494" bold="true" box="[1087,1108,1752,1778]" pageId="4" pageNumber="148">A</emphasis>
. Dorsal view of anterior body region of a specimen stained with Shirlastain A.
<emphasis id="B93AC65DFFB5FFBAFC94F92C825F6573" bold="true" box="[851,871,1787,1813]" pageId="4" pageNumber="148">B</emphasis>
. Lateral view of mid body chaetal fascicle, emphasizing the nature of spiniger compound chaetae and acicular chaetae under optical microscopy.
<emphasis id="B93AC65DFFB5FFBAFF78F89681EB653D" bold="true" box="[191,211,1857,1883]" pageId="4" pageNumber="148">C</emphasis>
. Lateral view of posterior body chaetal fascicle emphasizing the nature of spiniger compound chaetae and acicular chaetae under electron microscopy.
<emphasis id="B93AC65DFFB5FFBAFCC1F8B282216519" bold="true" box="[774,793,1893,1919]" pageId="4" pageNumber="148">D</emphasis>
. Ventral view of body anterior region and the two chaetal fascicles of spiniger compound chaetae. Abbreviations: As = acicular spine; Ch 17 = chaetigers 17; Co = spiniger compound chaetae; F1 = chaetiger 1 anteriormost chaetal fascicle; F2 = chaetiger 1 posteriormost chaetal fascicle.
</paragraph>
</caption>
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<emphasis id="B93AC65DFFB4FFBBFF7AFEDE80556344" bold="true" box="[189,365,264,291]" pageId="5" pageNumber="149">Type material</emphasis>
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</emphasis>
</paragraph>
<paragraph id="8BF11A4FFFB4FFBBFF7AFE8D807363FE" blockId="5.[188,1399,311,408]" pageId="5" pageNumber="149">
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basin •
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;
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; depth
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<collectingDate id="EFB4C567FFB4FFBBFB1DFE8D844A6312" box="[1242,1394,346,373]" pageId="5" pageNumber="149" value="2021-06-22">22 Jun. 2021</collectingDate>
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<typeStatus id="54F5A4EDFFB4FFBBFF2DFE68806463BF" box="[234,348,447,473]" pageId="5" pageNumber="149" type="paratype">Paratype</typeStatus>
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</paragraph>
<paragraph id="8BF11A4FFFB4FFBBFF7AFE3580AE6079" blockId="5.[188,1399,447,544]" pageId="5" pageNumber="149">
<collectingCountry id="F3595ADFFFB4FFBBFF7AFE35801E639A" box="[189,294,482,508]" name="Brazil" pageId="5" pageNumber="149">BRAZIL</collectingCountry>
Santos basin •
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without anal cirri;
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,
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; depth
<quantity id="4CB6B7AAFFB4FFBBFB0DFE35842E639B" box="[1226,1302,482,509]" metricMagnitude="2" metricUnit="m" metricValue="1.0" pageId="5" pageNumber="149" unit="m" value="100.0">
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;
<date id="FFF03C8FFFB4FFBBFAE5FE3581C26079" pageId="5" pageNumber="149" value="2021-06-16">
<collectingDate id="EFB4C567FFB4FFBBFAE5FE3581C26079" pageId="5" pageNumber="149" value="2021-06-16">16 Jun. 2021</collectingDate>
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;
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.
</paragraph>
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<emphasis id="B93AC65DFFB4FFBBFF2DFD9183126006" bold="true" box="[234,554,582,608]" pageId="5" pageNumber="149">Other material examined</emphasis>
</paragraph>
<paragraph id="8BF11A4FFFB4FFBBFF7AFDBD83B76177" blockId="5.[189,1400,582,785]" pageId="5" pageNumber="149">
<collectingCountry id="F3595ADFFFB4FFBBFF7AFDBD801E60E2" box="[189,294,618,644]" name="Brazil" pageId="5" pageNumber="149">BRAZIL</collectingCountry>
Santos basin •
<materialsCitation id="3B261012FFB4FFBBFE3EFDBD807360C1" ID-GBIF-Occurrence="4903683303" collectingDate="2021-06-13" collectionCode="UERJ" country="Brazil" elevation="100" latitude="-27.0219" longLatPrecision="1" longitude="-47.7294" pageId="5" pageNumber="149" specimenCode="UERJ 8927" specimenCount="2">
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;
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,
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; depth
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;
<date id="FFF03C8FFFB4FFBBFB13FDBD844A60E2" box="[1236,1394,618,644]" pageId="5" pageNumber="149" value="2021-06-13">
<collectingDate id="EFB4C567FFB4FFBBFB13FDBD844A60E2" box="[1236,1394,618,644]" pageId="5" pageNumber="149" value="2021-06-13">13 Jun. 2021</collectingDate>
</date>
;
<specimenCode id="DBE8B234FFB4FFBBFF78FD59807360C1" box="[191,331,653,680]" collectionCode="UERJ" pageId="5" pageNumber="149">UERJ 8927</specimenCode>
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<materialsCitation id="3B261012FFB4FFBBFEACFD5A844F60C1" ID-GBIF-Occurrence="4903683302" box="[363,1399,652,680]" collectingDate="2021-06-03" collectionCode="UERJ" country="Brazil" elevation="75" latitude="-23.4869" longLatPrecision="1" longitude="-43.9752" pageId="5" pageNumber="149" specimenCode="UERJ 8928" specimenCount="1">
<specimenCount id="9D48D1C6FFB4FFBBFEACFD5A80FC60CE" box="[363,452,653,680]" count="1" pageId="5" pageNumber="149" type="generic">1 spec.</specimenCount>
;
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,
<geoCoordinate id="EE7A7C88FFB4FFBBFD7FFD5A82A160CE" box="[696,921,652,680]" degrees="43" direction="west" minutes="58" orientation="longitude" pageId="5" pageNumber="149" precision="1" seconds="30.7200" value="-43.9752">43°5830.7200″ W</geoCoordinate>
; depth
<quantity id="4CB6B7AAFFB4FFBBFC32FD5A850060CE" box="[1013,1080,653,680]" metricMagnitude="1" metricUnit="m" metricValue="7.5" pageId="5" pageNumber="149" unit="m" value="75.0">
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</quantity>
;
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<collectingDate id="EFB4C567FFB4FFBBFB8FFD5A85E360C1" box="[1096,1243,653,680]" pageId="5" pageNumber="149" value="2021-06-03">3 Jun. 2021</collectingDate>
</date>
;
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<materialsCitation id="3B261012FFB4FFBBFF08FD67851460AC" ID-GBIF-Occurrence="4903683307" box="[207,1068,687,715]" collectionCode="UERJ" country="Brazil" elevation="150" latitude="-24.088902" longLatPrecision="1" longitude="-43.673203" pageId="5" pageNumber="149" specimenCode="UERJ 8929" specimenCount="1">
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;
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,
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; depth
<quantity id="4CB6B7AAFFB4FFBBFC80FD6782AD60AD" box="[839,917,688,715]" metricMagnitude="2" metricUnit="m" metricValue="1.5" pageId="5" pageNumber="149" unit="m" value="150.0">
<elevation id="0063FD7CFFB4FFBBFC80FD6782AD60AD" box="[839,917,688,715]" metricMagnitude="2" metricUnit="m" metricValue="1.5" pageId="5" pageNumber="149" unit="m" value="150.0">150 m</elevation>
</quantity>
;
<specimenCode id="DBE8B234FFB4FFBBFC65FD66851460AC" box="[930,1068,688,715]" collectionCode="UERJ" pageId="5" pageNumber="149">UERJ 8929</specimenCode>
</materialsCitation>
<materialsCitation id="3B261012FFB4FFBBFB81FD6782496088" ID-GBIF-Occurrence="4903683304" collectingDate="2021-06-15" collectionCode="UERJ" country="Brazil" elevation="10" latitude="-29.157" longLatPrecision="1" longitude="-47.21708" pageId="5" pageNumber="149" specimenCode="UERJ 8930" specimenCount="5">
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;
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,
<geoCoordinate id="EE7A7C88FFB4FFBBFF7AFD0380A36088" box="[189,411,722,750]" degrees="47" direction="west" minutes="13" orientation="longitude" pageId="5" pageNumber="149" precision="1" seconds="01.4800" value="-47.21708">47°1301.4800″ W</geoCoordinate>
; depth
<quantity id="4CB6B7AAFFB4FFBBFE36FD0383096088" box="[497,561,724,750]" metricMagnitude="1" metricUnit="m" metricValue="1.0" pageId="5" pageNumber="149" unit="m" value="10.0">
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</quantity>
;
<date id="FFF03C8FFFB4FFBBFDF9FD0483E26088" box="[574,730,723,750]" pageId="5" pageNumber="149" value="2021-06-15">
<collectingDate id="EFB4C567FFB4FFBBFDF9FD0483E26088" box="[574,730,723,750]" pageId="5" pageNumber="149" value="2021-06-15">15 Jun. 2021</collectingDate>
</date>
;
<specimenCode id="DBE8B234FFB4FFBBFD20FD0382496088" box="[743,881,724,750]" collectionCode="UERJ" pageId="5" pageNumber="149">UERJ 8930</specimenCode>
</materialsCitation>
<materialsCitation id="3B261012FFB4FFBBFC4CFD0383B26177" ID-GBIF-Occurrence="4903683305" collectingDate="2019-07-02" collectionCode="UERJ" country="Brazil" elevation="2169" latitude="-25.675299" longLatPrecision="1" longitude="-43.989113" pageId="5" pageNumber="149" specimenCode="UERJ 8960" specimenCount="1">
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;
<geoCoordinate id="EE7A7C88FFB4FFBBFC29FD04858A6088" box="[1006,1202,722,750]" degrees="25" direction="south" minutes="40" orientation="latitude" pageId="5" pageNumber="149" precision="1" seconds="31.080" value="-25.675299">25°4031.080″ S</geoCoordinate>
,
<geoCoordinate id="EE7A7C88FFB4FFBBFB07FD04844B6088" box="[1216,1395,722,750]" degrees="43" direction="west" minutes="59" orientation="longitude" pageId="5" pageNumber="149" precision="1" seconds="20.8" value="-43.989113">43°5920.8″ W</geoCoordinate>
; depth
<quantity id="4CB6B7AAFFB4FFBBFEC2FD2080596177" box="[261,353,759,785]" metricMagnitude="3" metricUnit="m" metricValue="2.169" pageId="5" pageNumber="149" unit="m" value="2169.0">
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</quantity>
;
<date id="FFF03C8FFFB4FFBBFEA9FD2080CB6177" box="[366,499,759,785]" pageId="5" pageNumber="149" value="2019-07-02">
<collectingDate id="EFB4C567FFB4FFBBFEA9FD2080CB6177" box="[366,499,759,785]" pageId="5" pageNumber="149" value="2019-07-02">2 Jul. 2019</collectingDate>
</date>
;
<specimenCode id="DBE8B234FFB4FFBBFE38FD2083B26177" box="[511,650,759,785]" collectionCode="UERJ" pageId="5" pageNumber="149">UERJ 8960</specimenCode>
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.
</paragraph>
</subSubSection>
<subSubSection id="C35449C4FFB4FFBBFF7AFCEF85BB6481" pageId="5" pageNumber="149" type="description">
<paragraph id="8BF11A4FFFB4FFBBFF7AFCEF80776134" blockId="5.[189,335,824,850]" box="[189,335,824,850]" pageId="5" pageNumber="149">
<heading id="D0B9AD23FFB4FFBBFF7AFCEF80776134" bold="true" box="[189,335,824,850]" fontSize="11" level="3" pageId="5" pageNumber="149" reason="3">
<emphasis id="B93AC65DFFB4FFBBFF7AFCEF80776134" bold="true" box="[189,335,824,850]" pageId="5" pageNumber="149">Description</emphasis>
</heading>
</paragraph>
<paragraph id="8BF11A4FFFB4FFBBFF7AFCB085C36611" blockId="5.[188,1400,871,1144]" pageId="5" pageNumber="149">
Holotype complete; measuring 980 μm long for 242 μm wide.
<typeStatus id="54F5A4EDFFB4FFBBFC7AFCB0851761E7" box="[957,1071,871,897]" pageId="5" pageNumber="149" type="paratype">Paratypes</typeStatus>
complete, measuring 319 870 μm long for up to 200316 μm wide. Grey to whitish specimens, consisting of prostomium, seven chaetigers (
<figureCitation id="137506CAFFB4FFBBFE81FC7A809B61A1" box="[326,419,941,967]" captionStart="Fig" captionStartId="4.[189,232,1752,1778]" captionTargetBox="[194,1393,557,1708]" captionTargetId="figure-47@4.[189,1398,551,1714]" captionText="Fig. 2 Paranerilla schiavettii sp. nov., under optical microscopy and SEM. A. Dorsal view of anterior body region of a specimen stained with Shirlastain A. B. Lateral view of mid body chaetal fascicle, emphasizing the nature of spiniger compound chaetae and acicular chaetae under optical microscopy. C. Lateral view of posterior body chaetal fascicle emphasizing the nature of spiniger compound chaetae and acicular chaetae under electron microscopy. D. Ventral view of body anterior region and the two chaetal fascicles of spiniger compound chaetae. Abbreviations: As = acicular spine; Ch 17 = chaetigers 17; Co = spiniger compound chaetae; F1 = chaetiger 1 anteriormost chaetal fascicle; F2 = chaetiger 1 posteriormost chaetal fascicle." figureDoi="http://doi.org/10.5281/zenodo.12691973" httpUri="https://zenodo.org/record/12691973/files/figure.png" pageId="5" pageNumber="149">Fig. 2A</figureCitation>
) and pygidium with pair of terminal cirri (
<figureCitation id="137506CAFFB4FFBBFC66FC7A82C561A1" box="[929,1021,941,967]" captionStart="Fig" captionStartId="6.[189,232,1787,1813]" captionTargetBox="[260,1327,307,1743]" captionTargetId="figure-12@6.[256,1331,300,1749]" captionText="Fig. 3 Paranerilla schiavettii sp. nov. under SEM. A. Dorsal view of anterior body region. B. Dorsal view of posterior body region. C. Dorsal view of entire body, emphasizing the number of chaetigers. D. Ventral view of body anterior region, showing the mouth ciliary plate and succeeding ciliary bands. E. Ventral view of body posterior region showing the anal cirri. F. Acicular spine of chaetiger 3 in detail. Abbreviations: Ac = anal cirrus; As = acicular spine; Ch 17 = chaetigers 17; dB1 = dorsal ciliary bands on chaetiger 1; dCP = dorsal ciliary plate; Hor = lateral horn; Mo = mouth; Pc = parapodial cirri; Pr = prostomium; vB1 = ventral ciliary band of chaetiger 1; vCP = ventral ciliary plate." figureDoi="http://doi.org/10.5281/zenodo.12691985" httpUri="https://zenodo.org/record/12691985/files/figure.png" pageId="5" pageNumber="149">Fig. 3E</figureCitation>
). Maximum body width always at chaetiger 4 excluding parapodia (
<figureCitation id="137506CAFFB4FFBBFDACFC0783F4618C" box="[619,716,976,1002]" captionStart="Fig" captionStartId="4.[189,232,1752,1778]" captionTargetBox="[194,1393,557,1708]" captionTargetId="figure-47@4.[189,1398,551,1714]" captionText="Fig. 2 Paranerilla schiavettii sp. nov., under optical microscopy and SEM. A. Dorsal view of anterior body region of a specimen stained with Shirlastain A. B. Lateral view of mid body chaetal fascicle, emphasizing the nature of spiniger compound chaetae and acicular chaetae under optical microscopy. C. Lateral view of posterior body chaetal fascicle emphasizing the nature of spiniger compound chaetae and acicular chaetae under electron microscopy. D. Ventral view of body anterior region and the two chaetal fascicles of spiniger compound chaetae. Abbreviations: As = acicular spine; Ch 17 = chaetigers 17; Co = spiniger compound chaetae; F1 = chaetiger 1 anteriormost chaetal fascicle; F2 = chaetiger 1 posteriormost chaetal fascicle." figureDoi="http://doi.org/10.5281/zenodo.12691973" httpUri="https://zenodo.org/record/12691973/files/figure.png" pageId="5" pageNumber="149">Fig. 2A</figureCitation>
). Prostomium with pair of lateral horns and almost fused to chaetiger 1 (
<figureCitation id="137506CAFFB4FFBBFEA8FC2480F66668" box="[367,462,1011,1038]" captionStart="Fig" captionStartId="4.[189,232,1752,1778]" captionTargetBox="[194,1393,557,1708]" captionTargetId="figure-47@4.[189,1398,551,1714]" captionText="Fig. 2 Paranerilla schiavettii sp. nov., under optical microscopy and SEM. A. Dorsal view of anterior body region of a specimen stained with Shirlastain A. B. Lateral view of mid body chaetal fascicle, emphasizing the nature of spiniger compound chaetae and acicular chaetae under optical microscopy. C. Lateral view of posterior body chaetal fascicle emphasizing the nature of spiniger compound chaetae and acicular chaetae under electron microscopy. D. Ventral view of body anterior region and the two chaetal fascicles of spiniger compound chaetae. Abbreviations: As = acicular spine; Ch 17 = chaetigers 17; Co = spiniger compound chaetae; F1 = chaetiger 1 anteriormost chaetal fascicle; F2 = chaetiger 1 posteriormost chaetal fascicle." figureDoi="http://doi.org/10.5281/zenodo.12691973" httpUri="https://zenodo.org/record/12691973/files/figure.png" pageId="5" pageNumber="149">Fig. 2D</figureCitation>
). Prostomium up to 36 μm long, 144 μm wide including lateral horns (
<figureCitation id="137506CAFFB4FFBBFACDFC2484506668" box="[1290,1384,1011,1038]" captionStart="Fig" captionStartId="6.[189,232,1787,1813]" captionTargetBox="[260,1327,307,1743]" captionTargetId="figure-12@6.[256,1331,300,1749]" captionText="Fig. 3 Paranerilla schiavettii sp. nov. under SEM. A. Dorsal view of anterior body region. B. Dorsal view of posterior body region. C. Dorsal view of entire body, emphasizing the number of chaetigers. D. Ventral view of body anterior region, showing the mouth ciliary plate and succeeding ciliary bands. E. Ventral view of body posterior region showing the anal cirri. F. Acicular spine of chaetiger 3 in detail. Abbreviations: Ac = anal cirrus; As = acicular spine; Ch 17 = chaetigers 17; dB1 = dorsal ciliary bands on chaetiger 1; dCP = dorsal ciliary plate; Hor = lateral horn; Mo = mouth; Pc = parapodial cirri; Pr = prostomium; vB1 = ventral ciliary band of chaetiger 1; vCP = ventral ciliary plate." figureDoi="http://doi.org/10.5281/zenodo.12691985" httpUri="https://zenodo.org/record/12691985/files/figure.png" pageId="5" pageNumber="149">Fig. 3A</figureCitation>
); maximum length of lateral horns up to 40 μm, measured along the posterior edge. Prostomium and chaetiger 1 together about as long as each of the following segments. All body segments similar in width and length, except for slight expansion on chaetiger 4 (
<figureCitation id="137506CAFFB4FFBBFC87FB8A82AE6611" box="[832,918,1117,1143]" captionStart="Fig" captionStartId="4.[189,232,1752,1778]" captionTargetBox="[194,1393,557,1708]" captionTargetId="figure-47@4.[189,1398,551,1714]" captionText="Fig. 2 Paranerilla schiavettii sp. nov., under optical microscopy and SEM. A. Dorsal view of anterior body region of a specimen stained with Shirlastain A. B. Lateral view of mid body chaetal fascicle, emphasizing the nature of spiniger compound chaetae and acicular chaetae under optical microscopy. C. Lateral view of posterior body chaetal fascicle emphasizing the nature of spiniger compound chaetae and acicular chaetae under electron microscopy. D. Ventral view of body anterior region and the two chaetal fascicles of spiniger compound chaetae. Abbreviations: As = acicular spine; Ch 17 = chaetigers 17; Co = spiniger compound chaetae; F1 = chaetiger 1 anteriormost chaetal fascicle; F2 = chaetiger 1 posteriormost chaetal fascicle." figureDoi="http://doi.org/10.5281/zenodo.12691973" httpUri="https://zenodo.org/record/12691973/files/figure.png" pageId="5" pageNumber="149">Fig. 2a</figureCitation>
). Nuchal organs not observed.
</paragraph>
<paragraph id="8BF11A4FFFB4FFBBFF7AFB49844D6793" blockId="5.[187,1401,1182,1526]" pageId="5" pageNumber="149">
Parapodia on chaetiger 1, usually about 2 × as long as length of following parapodia (
<figureCitation id="137506CAFFB4FFBBFB56FB4985D666DF" box="[1169,1262,1182,1209]" captionStart="Fig" captionStartId="4.[189,232,1752,1778]" captionTargetBox="[194,1393,557,1708]" captionTargetId="figure-47@4.[189,1398,551,1714]" captionText="Fig. 2 Paranerilla schiavettii sp. nov., under optical microscopy and SEM. A. Dorsal view of anterior body region of a specimen stained with Shirlastain A. B. Lateral view of mid body chaetal fascicle, emphasizing the nature of spiniger compound chaetae and acicular chaetae under optical microscopy. C. Lateral view of posterior body chaetal fascicle emphasizing the nature of spiniger compound chaetae and acicular chaetae under electron microscopy. D. Ventral view of body anterior region and the two chaetal fascicles of spiniger compound chaetae. Abbreviations: As = acicular spine; Ch 17 = chaetigers 17; Co = spiniger compound chaetae; F1 = chaetiger 1 anteriormost chaetal fascicle; F2 = chaetiger 1 posteriormost chaetal fascicle." figureDoi="http://doi.org/10.5281/zenodo.12691973" httpUri="https://zenodo.org/record/12691973/files/figure.png" pageId="5" pageNumber="149">Fig. 2D</figureCitation>
). Short cirri with strongly ciliated band on chaetiger 1 (
<figureCitation id="137506CAFFB4FFBBFD7AFB15822666BA" box="[701,798,1218,1244]" captionStart="Fig" captionStartId="4.[189,232,1752,1778]" captionTargetBox="[194,1393,557,1708]" captionTargetId="figure-47@4.[189,1398,551,1714]" captionText="Fig. 2 Paranerilla schiavettii sp. nov., under optical microscopy and SEM. A. Dorsal view of anterior body region of a specimen stained with Shirlastain A. B. Lateral view of mid body chaetal fascicle, emphasizing the nature of spiniger compound chaetae and acicular chaetae under optical microscopy. C. Lateral view of posterior body chaetal fascicle emphasizing the nature of spiniger compound chaetae and acicular chaetae under electron microscopy. D. Ventral view of body anterior region and the two chaetal fascicles of spiniger compound chaetae. Abbreviations: As = acicular spine; Ch 17 = chaetigers 17; Co = spiniger compound chaetae; F1 = chaetiger 1 anteriormost chaetal fascicle; F2 = chaetiger 1 posteriormost chaetal fascicle." figureDoi="http://doi.org/10.5281/zenodo.12691973" httpUri="https://zenodo.org/record/12691973/files/figure.png" pageId="5" pageNumber="149">Fig. 2D</figureCitation>
). Rudimentary cirri with distal cilia may be found on chaetigers 27, between dorsal and ventral chaetal bundles. Two pygidial cirri up to 132 μm long (
<figureCitation id="137506CAFFB4FFBBFF0FFADF801A6744" box="[200,290,1288,1314]" captionStart="Fig" captionStartId="6.[189,232,1787,1813]" captionTargetBox="[260,1327,307,1743]" captionTargetId="figure-12@6.[256,1331,300,1749]" captionText="Fig. 3 Paranerilla schiavettii sp. nov. under SEM. A. Dorsal view of anterior body region. B. Dorsal view of posterior body region. C. Dorsal view of entire body, emphasizing the number of chaetigers. D. Ventral view of body anterior region, showing the mouth ciliary plate and succeeding ciliary bands. E. Ventral view of body posterior region showing the anal cirri. F. Acicular spine of chaetiger 3 in detail. Abbreviations: Ac = anal cirrus; As = acicular spine; Ch 17 = chaetigers 17; dB1 = dorsal ciliary bands on chaetiger 1; dCP = dorsal ciliary plate; Hor = lateral horn; Mo = mouth; Pc = parapodial cirri; Pr = prostomium; vB1 = ventral ciliary band of chaetiger 1; vCP = ventral ciliary plate." figureDoi="http://doi.org/10.5281/zenodo.12691985" httpUri="https://zenodo.org/record/12691985/files/figure.png" pageId="5" pageNumber="149">Fig. 3E</figureCitation>
). One acicular spine on noto- and one on neuropodia of chaetigers 37 accompanying spinigers compound chaetae (
<figureCitation id="137506CAFFB4FFBBFE77FAFC83356723" box="[432,525,1323,1349]" captionStart="Fig" captionStartId="6.[189,232,1787,1813]" captionTargetBox="[260,1327,307,1743]" captionTargetId="figure-12@6.[256,1331,300,1749]" captionText="Fig. 3 Paranerilla schiavettii sp. nov. under SEM. A. Dorsal view of anterior body region. B. Dorsal view of posterior body region. C. Dorsal view of entire body, emphasizing the number of chaetigers. D. Ventral view of body anterior region, showing the mouth ciliary plate and succeeding ciliary bands. E. Ventral view of body posterior region showing the anal cirri. F. Acicular spine of chaetiger 3 in detail. Abbreviations: Ac = anal cirrus; As = acicular spine; Ch 17 = chaetigers 17; dB1 = dorsal ciliary bands on chaetiger 1; dCP = dorsal ciliary plate; Hor = lateral horn; Mo = mouth; Pc = parapodial cirri; Pr = prostomium; vB1 = ventral ciliary band of chaetiger 1; vCP = ventral ciliary plate." figureDoi="http://doi.org/10.5281/zenodo.12691985" httpUri="https://zenodo.org/record/12691985/files/figure.png" pageId="5" pageNumber="149">Fig. 3F</figureCitation>
), one emerging ventrally to them on notopodia and another dorsally to them on neuropodia. Spiniger compound chaetae present as single pointed distal extension following chaetae articulation (
<figureCitation id="137506CAFFB4FFBBFE7CFAA5832367EA" box="[443,539,1394,1420]" captionStart="Fig" captionStartId="4.[189,232,1752,1778]" captionTargetBox="[194,1393,557,1708]" captionTargetId="figure-47@4.[189,1398,551,1714]" captionText="Fig. 2 Paranerilla schiavettii sp. nov., under optical microscopy and SEM. A. Dorsal view of anterior body region of a specimen stained with Shirlastain A. B. Lateral view of mid body chaetal fascicle, emphasizing the nature of spiniger compound chaetae and acicular chaetae under optical microscopy. C. Lateral view of posterior body chaetal fascicle emphasizing the nature of spiniger compound chaetae and acicular chaetae under electron microscopy. D. Ventral view of body anterior region and the two chaetal fascicles of spiniger compound chaetae. Abbreviations: As = acicular spine; Ch 17 = chaetigers 17; Co = spiniger compound chaetae; F1 = chaetiger 1 anteriormost chaetal fascicle; F2 = chaetiger 1 posteriormost chaetal fascicle." figureDoi="http://doi.org/10.5281/zenodo.12691973" httpUri="https://zenodo.org/record/12691973/files/figure.png" pageId="5" pageNumber="149">Fig. 2B</figureCitation>
). Chaetiger 1 uniramous, bearing two chaetal fascicles (
<figureCitation id="137506CAFFB4FFBBFB0DFAA5841167EA" box="[1226,1321,1394,1420]" captionStart="Fig" captionStartId="4.[189,232,1752,1778]" captionTargetBox="[194,1393,557,1708]" captionTargetId="figure-47@4.[189,1398,551,1714]" captionText="Fig. 2 Paranerilla schiavettii sp. nov., under optical microscopy and SEM. A. Dorsal view of anterior body region of a specimen stained with Shirlastain A. B. Lateral view of mid body chaetal fascicle, emphasizing the nature of spiniger compound chaetae and acicular chaetae under optical microscopy. C. Lateral view of posterior body chaetal fascicle emphasizing the nature of spiniger compound chaetae and acicular chaetae under electron microscopy. D. Ventral view of body anterior region and the two chaetal fascicles of spiniger compound chaetae. Abbreviations: As = acicular spine; Ch 17 = chaetigers 17; Co = spiniger compound chaetae; F1 = chaetiger 1 anteriormost chaetal fascicle; F2 = chaetiger 1 posteriormost chaetal fascicle." figureDoi="http://doi.org/10.5281/zenodo.12691973" httpUri="https://zenodo.org/record/12691973/files/figure.png" pageId="5" pageNumber="149">Fig. 2D</figureCitation>
), with maximum of 14 chaetae; segments 27 biramous, with one dorsal and ventral fascicles, comprising 712 chaetae each, highest number in chaetigers 35. Chaetae on chaetigers 1 and 7 longer than those of other chaetigers (
<figureCitation id="137506CAFFB4FFBBFE43FA0C80E66793" box="[388,478,1499,1525]" captionStart="Fig" captionStartId="6.[189,232,1787,1813]" captionTargetBox="[260,1327,307,1743]" captionTargetId="figure-12@6.[256,1331,300,1749]" captionText="Fig. 3 Paranerilla schiavettii sp. nov. under SEM. A. Dorsal view of anterior body region. B. Dorsal view of posterior body region. C. Dorsal view of entire body, emphasizing the number of chaetigers. D. Ventral view of body anterior region, showing the mouth ciliary plate and succeeding ciliary bands. E. Ventral view of body posterior region showing the anal cirri. F. Acicular spine of chaetiger 3 in detail. Abbreviations: Ac = anal cirrus; As = acicular spine; Ch 17 = chaetigers 17; dB1 = dorsal ciliary bands on chaetiger 1; dCP = dorsal ciliary plate; Hor = lateral horn; Mo = mouth; Pc = parapodial cirri; Pr = prostomium; vB1 = ventral ciliary band of chaetiger 1; vCP = ventral ciliary plate." figureDoi="http://doi.org/10.5281/zenodo.12691985" httpUri="https://zenodo.org/record/12691985/files/figure.png" pageId="5" pageNumber="149">Fig. 3C</figureCitation>
), but chaetae on chaetiger 7 slightly shorter than those on chaetiger 1 (
<figureCitation id="137506CAFFB4FFBBFACBFA0C84506793" box="[1292,1384,1499,1525]" captionStart="Fig" captionStartId="6.[189,232,1787,1813]" captionTargetBox="[260,1327,307,1743]" captionTargetId="figure-12@6.[256,1331,300,1749]" captionText="Fig. 3 Paranerilla schiavettii sp. nov. under SEM. A. Dorsal view of anterior body region. B. Dorsal view of posterior body region. C. Dorsal view of entire body, emphasizing the number of chaetigers. D. Ventral view of body anterior region, showing the mouth ciliary plate and succeeding ciliary bands. E. Ventral view of body posterior region showing the anal cirri. F. Acicular spine of chaetiger 3 in detail. Abbreviations: Ac = anal cirrus; As = acicular spine; Ch 17 = chaetigers 17; dB1 = dorsal ciliary bands on chaetiger 1; dCP = dorsal ciliary plate; Hor = lateral horn; Mo = mouth; Pc = parapodial cirri; Pr = prostomium; vB1 = ventral ciliary band of chaetiger 1; vCP = ventral ciliary plate." figureDoi="http://doi.org/10.5281/zenodo.12691985" httpUri="https://zenodo.org/record/12691985/files/figure.png" pageId="5" pageNumber="149">Fig. 3C</figureCitation>
).
</paragraph>
<paragraph id="8BF11A4FFFB4FFBBFF7AF9CA85BB6481" blockId="5.[188,1400,1565,1767]" pageId="5" pageNumber="149">
Prostomium, peristomium and entire dorsal and ventral body surfaces of chaetigers 17 densely covered by cilia, except in gaps between ciliated bands (
<figureCitation id="137506CAFFB4FFBBFD3BF9978262643C" box="[764,858,1600,1626]" captionStart="Fig" captionStartId="6.[189,232,1787,1813]" captionTargetBox="[260,1327,307,1743]" captionTargetId="figure-12@6.[256,1331,300,1749]" captionText="Fig. 3 Paranerilla schiavettii sp. nov. under SEM. A. Dorsal view of anterior body region. B. Dorsal view of posterior body region. C. Dorsal view of entire body, emphasizing the number of chaetigers. D. Ventral view of body anterior region, showing the mouth ciliary plate and succeeding ciliary bands. E. Ventral view of body posterior region showing the anal cirri. F. Acicular spine of chaetiger 3 in detail. Abbreviations: Ac = anal cirrus; As = acicular spine; Ch 17 = chaetigers 17; dB1 = dorsal ciliary bands on chaetiger 1; dCP = dorsal ciliary plate; Hor = lateral horn; Mo = mouth; Pc = parapodial cirri; Pr = prostomium; vB1 = ventral ciliary band of chaetiger 1; vCP = ventral ciliary plate." figureDoi="http://doi.org/10.5281/zenodo.12691985" httpUri="https://zenodo.org/record/12691985/files/figure.png" pageId="5" pageNumber="149">Fig. 3A</figureCitation>
) and parapodial rami on body lateral surface and among chaetal fascicles (
<figureCitation id="137506CAFFB4FFBBFDE3F9B483BC641B" box="[548,644,1635,1661]" captionStart="Fig" captionStartId="4.[189,232,1752,1778]" captionTargetBox="[194,1393,557,1708]" captionTargetId="figure-47@4.[189,1398,551,1714]" captionText="Fig. 2 Paranerilla schiavettii sp. nov., under optical microscopy and SEM. A. Dorsal view of anterior body region of a specimen stained with Shirlastain A. B. Lateral view of mid body chaetal fascicle, emphasizing the nature of spiniger compound chaetae and acicular chaetae under optical microscopy. C. Lateral view of posterior body chaetal fascicle emphasizing the nature of spiniger compound chaetae and acicular chaetae under electron microscopy. D. Ventral view of body anterior region and the two chaetal fascicles of spiniger compound chaetae. Abbreviations: As = acicular spine; Ch 17 = chaetigers 17; Co = spiniger compound chaetae; F1 = chaetiger 1 anteriormost chaetal fascicle; F2 = chaetiger 1 posteriormost chaetal fascicle." figureDoi="http://doi.org/10.5281/zenodo.12691973" httpUri="https://zenodo.org/record/12691973/files/figure.png" pageId="5" pageNumber="149">Fig. 2C</figureCitation>
). Dorsally, chaetiger 1 presenting dorsal ciliary plate followed posteriorly by three transverse ciliary bands (
<figureCitation id="137506CAFFB4FFBBFD2EF951827464C6" box="[745,844,1670,1696]" captionStart="Fig" captionStartId="6.[189,232,1787,1813]" captionTargetBox="[260,1327,307,1743]" captionTargetId="figure-12@6.[256,1331,300,1749]" captionText="Fig. 3 Paranerilla schiavettii sp. nov. under SEM. A. Dorsal view of anterior body region. B. Dorsal view of posterior body region. C. Dorsal view of entire body, emphasizing the number of chaetigers. D. Ventral view of body anterior region, showing the mouth ciliary plate and succeeding ciliary bands. E. Ventral view of body posterior region showing the anal cirri. F. Acicular spine of chaetiger 3 in detail. Abbreviations: Ac = anal cirrus; As = acicular spine; Ch 17 = chaetigers 17; dB1 = dorsal ciliary bands on chaetiger 1; dCP = dorsal ciliary plate; Hor = lateral horn; Mo = mouth; Pc = parapodial cirri; Pr = prostomium; vB1 = ventral ciliary band of chaetiger 1; vCP = ventral ciliary plate." figureDoi="http://doi.org/10.5281/zenodo.12691985" httpUri="https://zenodo.org/record/12691985/files/figure.png" pageId="5" pageNumber="149">Fig. 3A</figureCitation>
). Ventrally, chaetiger 1 having ventral ciliary plate around mouth opening followed posteriorly by two ventral transverse ciliary bands (
<figureCitation id="137506CAFFB4FFBBFAC0F97E845164A2" box="[1287,1385,1705,1732]" captionStart="Fig" captionStartId="6.[189,232,1787,1813]" captionTargetBox="[260,1327,307,1743]" captionTargetId="figure-12@6.[256,1331,300,1749]" captionText="Fig. 3 Paranerilla schiavettii sp. nov. under SEM. A. Dorsal view of anterior body region. B. Dorsal view of posterior body region. C. Dorsal view of entire body, emphasizing the number of chaetigers. D. Ventral view of body anterior region, showing the mouth ciliary plate and succeeding ciliary bands. E. Ventral view of body posterior region showing the anal cirri. F. Acicular spine of chaetiger 3 in detail. Abbreviations: Ac = anal cirrus; As = acicular spine; Ch 17 = chaetigers 17; dB1 = dorsal ciliary bands on chaetiger 1; dCP = dorsal ciliary plate; Hor = lateral horn; Mo = mouth; Pc = parapodial cirri; Pr = prostomium; vB1 = ventral ciliary band of chaetiger 1; vCP = ventral ciliary plate." figureDoi="http://doi.org/10.5281/zenodo.12691985" httpUri="https://zenodo.org/record/12691985/files/figure.png" pageId="5" pageNumber="149">Fig. 3D</figureCitation>
). Chaetigers 27 with four transverse ciliary bands each both dorsally and ventrally.
</paragraph>
</subSubSection>
<subSubSection id="C35449C4FFB4FFBBFF7AF8D980EE65FB" pageId="5" pageNumber="149" type="biology_ecology">
<paragraph id="8BF11A4FFFB4FFBBFF7AF8D98019654E" blockId="5.[189,289,1806,1832]" box="[189,289,1806,1832]" pageId="5" pageNumber="149">
<heading id="D0B9AD23FFB4FFBBFF7AF8D98019654E" bold="true" box="[189,289,1806,1832]" fontSize="11" level="3" pageId="5" pageNumber="149" reason="3">
<emphasis id="B93AC65DFFB4FFBBFF7AF8D98019654E" bold="true" box="[189,289,1806,1832]" pageId="5" pageNumber="149">Ecology</emphasis>
</heading>
</paragraph>
<paragraph id="8BF11A4FFFB4FFBBFF7AF8EA80EE65FB" blockId="5.[187,1398,1853,1950]" pageId="5" pageNumber="149">
Santos Basin,
<collectingCountry id="F3595ADFFFB4FFBBFEA7F8EA80936531" box="[352,427,1853,1879]" name="Brazil" pageId="5" pageNumber="149">Brazil</collectingCountry>
. From a range of 75 to 2169 meters deep. The habitat is characterized predominantly by muddy sediments on the continental slope, but some specimens were found living in sandy sediments on the continental shelf.
</paragraph>
</subSubSection>
<caption id="DF314AC7FFB7FFB8FF7AF92C8584658E" ID-DOI="http://doi.org/10.5281/zenodo.12691985" ID-Zenodo-Dep="12691985" httpUri="https://zenodo.org/record/12691985/files/figure.png" pageId="6" pageNumber="150" startId="6.[189,232,1787,1813]" subCaptionStartIDs="6.[188,359,1928,1954]" subCaptionStarts="Abbr" targetBox="[260,1327,307,1743]" targetPageId="6">
<paragraph id="8BF11A4FFFB7FFB8FF7AF92C8584658E" blockId="6.[188,1399,1787,2025]" pageId="6" pageNumber="150">
<emphasis id="B93AC65DFFB7FFB8FF7AF92C803E6573" bold="true" box="[189,262,1787,1813]" pageId="6" pageNumber="150">Fig. 3</emphasis>
<taxonomicName id="4C4E61CCFFB7FFB8FED7F92C83266573" authorityName="Mendes &amp; Rodrigues &amp; Rizzo" authorityYear="2024" box="[272,542,1787,1813]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="6" pageNumber="150" phylum="Annelida" rank="species" species="schiavettii" status="sp. nov.">
<emphasis id="B93AC65DFFB7FFB8FED7F92C83266573" box="[272,542,1787,1813]" italics="true" pageId="6" pageNumber="150">Paranerilla schiavettii</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2097B26FFB7FFB8FDE0F92B83BA6570" box="[551,642,1788,1814]" pageId="6" pageNumber="150" rank="species">sp. nov.</taxonomicNameLabel>
under SEM.
<emphasis id="B93AC65DFFB7FFB8FCE3F92C82006573" bold="true" box="[804,824,1787,1813]" pageId="6" pageNumber="150">A</emphasis>
. Dorsal view of anterior body region.
<emphasis id="B93AC65DFFB7FFB8FAC1F92C84206573" bold="true" box="[1286,1304,1787,1813]" pageId="6" pageNumber="150">B</emphasis>
. Dorsal view of posterior body region.
<emphasis id="B93AC65DFFB7FFB8FDF3F8C9837F655E" bold="true" box="[564,583,1822,1848]" pageId="6" pageNumber="150">C</emphasis>
. Dorsal view of entire body, emphasizing the number of chaetigers.
<emphasis id="B93AC65DFFB7FFB8FF78F89581EA653A" bold="true" box="[191,210,1858,1884]" pageId="6" pageNumber="150">D</emphasis>
. Ventral view of body anterior region, showing the mouth ciliary plate and succeeding ciliary bands.
<emphasis id="B93AC65DFFB7FFB8FF7AF8B281E86519" bold="true" box="[189,208,1893,1919]" pageId="6" pageNumber="150">E</emphasis>
. Ventral view of body posterior region showing the anal cirri.
<emphasis id="B93AC65DFFB7FFB8FC59F8B282886519" bold="true" box="[926,944,1893,1919]" pageId="6" pageNumber="150">F</emphasis>
. Acicular spine of chaetiger
<quantity id="4CB6B7AAFFB7FFB8FB3BF8B284106519" box="[1276,1320,1893,1919]" metricMagnitude="-2" metricUnit="m" metricValue="7.62" pageId="6" pageNumber="150" unit="in" value="3.0">3 in</quantity>
detail. Abbreviations: Ac = anal cirrus; As = acicular spine; Ch 17 = chaetigers 17; dB1 = dorsal ciliary bands on chaetiger 1; dCP = dorsal ciliary plate; Hor = lateral horn; Mo = mouth; Pc = parapodial cirri; Pr = prostomium; vB1 = ventral ciliary band of chaetiger 1; vCP = ventral ciliary plate.
</paragraph>
</caption>
<subSubSection id="C35449C4FFB6FFB9FF7AFEDE845A609E" pageId="7" pageNumber="151" type="discussion">
<paragraph id="8BF11A4FFFB6FFB9FF7AFEDE80086345" blockId="7.[189,304,265,291]" box="[189,304,265,291]" pageId="7" pageNumber="151">
<heading id="D0B9AD23FFB6FFB9FF7AFEDE80086345" bold="true" box="[189,304,265,291]" fontSize="11" level="3" pageId="7" pageNumber="151" reason="3">
<emphasis id="B93AC65DFFB6FFB9FF7AFEDE80086345" bold="true" box="[189,304,265,291]" pageId="7" pageNumber="151">Remarks</emphasis>
</heading>
</paragraph>
<paragraph id="8BF11A4FFFB6FFB9FF7AFEE0845A609E" blockId="7.[188,1400,311,760]" pageId="7" pageNumber="151">
Despite their morphological differences, both
<taxonomicName id="4C4E61CCFFB6FFB9FD28FEEF82B26337" authorityName="Mendes &amp; Rodrigues &amp; Rizzo" authorityYear="2024" box="[751,906,311,337]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="schiavettii" status="sp. nov.">
<emphasis id="B93AC65DFFB6FFB9FD28FEEF82B26337" box="[751,906,311,337]" italics="true" pageId="7" pageNumber="151">P. schiavettii</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A2097B26FFB6FFB9FC51FEEF82CD6334" box="[918,1013,312,338]" pageId="7" pageNumber="151" rank="species">sp. nov.</taxonomicNameLabel>
and the currently valid species present 7 chaetigers, two pygidial cirri, a well developed pattern of dorsal and ventral ciliation, chaetiger 1 with cirri fully developed and rudimentary cirri in following parapodia (
<bibRefCitation id="EFDF67BEFFB6FFB9FB55FEAA81C363DD" author="Jouin C. &amp; Swedmark B." pageId="7" pageNumber="151" pagination="201 - 218" refId="ref4014" refString="Jouin C. &amp; Swedmark B. 1965. Paranerilla limicola n. g., n. sp., Archiannelide Nerillidae du benthos vaseux marin. Cahiers de Biology Marine 6: 201 - 218." type="journal article" year="1965">Jouin &amp; Swedmark 1965</bibRefCitation>
;
<bibRefCitation id="EFDF67BEFFB6FFB9FECAFE76835763DD" author="Worsaae K. &amp; Kristensen R. M." box="[269,623,417,443]" pageId="7" pageNumber="151" pagination="23 - 39" refId="ref4388" refString="Worsaae K. &amp; Kristensen R. M. 2003. A new species of Paranerilla (Polychaeta: Nerillidae) from Northeast Greenland Waters, Arctic Ocean. Cahiers de Biology Marine 44: 23 - 39." type="journal article" year="2003">Worsaae &amp; Kristensen 2003</bibRefCitation>
). The prostomium and chaetiger 1 present large ciliated areas and the following segments present small transverse bands in
<taxonomicName id="4C4E61CCFFB6FFB9FC06FE12857C63B8" authorityName="Jouin &amp; Swedmark" authorityYear="1965" box="[961,1092,452,478]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="limicola">
<emphasis id="B93AC65DFFB6FFB9FC06FE12857C63B8" box="[961,1092,452,478]" italics="true" pageId="7" pageNumber="151">P. limicola</emphasis>
</taxonomicName>
, but are densely ciliated in
<taxonomicName id="4C4E61CCFFB6FFB9FF18FE3F80B26067" authorityName="Worsaae &amp; Kristensen" authorityYear="2003" box="[223,394,487,513]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="cilioscutata">
<emphasis id="B93AC65DFFB6FFB9FF18FE3F80B26067" box="[223,394,487,513]" italics="true" pageId="7" pageNumber="151">P. cilioscutata</emphasis>
</taxonomicName>
and
<taxonomicName id="4C4E61CCFFB6FFB9FE0DFE3F835C6067" authorityName="Mendes &amp; Rodrigues &amp; Rizzo" authorityYear="2024" box="[458,612,487,513]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="schiavettii">
<emphasis id="B93AC65DFFB6FFB9FE0DFE3F835C6067" box="[458,612,487,513]" italics="true" pageId="7" pageNumber="151">P. schiavettii</emphasis>
</taxonomicName>
(
<bibRefCitation id="EFDF67BEFFB6FFB9FDB0FE3082936064" author="Jouin C. &amp; Swedmark B." box="[631,939,487,514]" pageId="7" pageNumber="151" pagination="201 - 218" refId="ref4014" refString="Jouin C. &amp; Swedmark B. 1965. Paranerilla limicola n. g., n. sp., Archiannelide Nerillidae du benthos vaseux marin. Cahiers de Biology Marine 6: 201 - 218." type="journal article" year="1965">Jouin &amp; Swedmark 1965</bibRefCitation>
;
<bibRefCitation id="EFDF67BEFFB6FFB9FC7DFE3F841F6067" author="Worsaae K. &amp; Kristensen R. M." box="[954,1319,487,514]" pageId="7" pageNumber="151" pagination="23 - 39" refId="ref4388" refString="Worsaae K. &amp; Kristensen R. M. 2003. A new species of Paranerilla (Polychaeta: Nerillidae) from Northeast Greenland Waters, Arctic Ocean. Cahiers de Biology Marine 44: 23 - 39." type="journal article" year="2003">Worsaae and Kristensen 2003</bibRefCitation>
). Both species present frontal horns, compound chaetae, chaetiger 1 with small cirri, and rudimentary cirri in all following chaetigers.
<taxonomicName id="4C4E61CCFFB6FFB9FE2FFDFA83E56021" authorityName="Jouin &amp; Swedmark" authorityYear="1965" box="[488,733,557,583]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="limicola">
<emphasis id="B93AC65DFFB6FFB9FE2FFDFA83E56021" box="[488,733,557,583]" italics="true" pageId="7" pageNumber="151">Paranerilla limicola</emphasis>
</taxonomicName>
differs from
<taxonomicName id="4C4E61CCFFB6FFB9FCB9FDF985106021" authorityName="Worsaae &amp; Kristensen" authorityYear="2003" box="[894,1064,557,583]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="cilioscutata">
<emphasis id="B93AC65DFFB6FFB9FCB9FDF985106021" box="[894,1064,557,583]" italics="true" pageId="7" pageNumber="151">P. cilioscutata</emphasis>
</taxonomicName>
not only in ciliation pattern but also on chaetal arrangement. Chaetiger
<quantity id="4CB6B7AAFFB6FFB9FD05FD8683C8600D" box="[706,752,593,619]" metricMagnitude="-2" metricUnit="m" metricValue="2.54" pageId="7" pageNumber="151" unit="in" value="1.0">1 in</quantity>
<taxonomicName id="4C4E61CCFFB6FFB9FD30FD86824E600D" authorityName="Jouin &amp; Swedmark" authorityYear="1965" box="[759,886,593,619]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="limicola">
<emphasis id="B93AC65DFFB6FFB9FD30FD86824E600D" box="[759,886,593,619]" italics="true" pageId="7" pageNumber="151">P. limicola</emphasis>
</taxonomicName>
presents 1317 chaetae, but
<taxonomicName id="4C4E61CCFFB6FFB9FB08FD86844F600D" authorityName="Worsaae &amp; Kristensen" authorityYear="2003" box="[1231,1399,593,619]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="cilioscutata">
<emphasis id="B93AC65DFFB6FFB9FB08FD86844F600D" box="[1231,1399,593,619]" italics="true" pageId="7" pageNumber="151">P. cilioscutata</emphasis>
</taxonomicName>
and
<taxonomicName id="4C4E61CCFFB6FFB9FF28FDA280BE60E8" authorityName="Mendes &amp; Rodrigues &amp; Rizzo" authorityYear="2024" box="[239,390,628,654]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="schiavettii">
<emphasis id="B93AC65DFFB6FFB9FF28FDA280BE60E8" box="[239,390,628,654]" italics="true" pageId="7" pageNumber="151">P. schiavettii</emphasis>
</taxonomicName>
present only 14 chaetae in the same chaetiger. On the other hand, in
<taxonomicName id="4C4E61CCFFB6FFB9FB6AFDA2847C60E8" authorityName="Mendes &amp; Rodrigues &amp; Rizzo" authorityYear="2024" box="[1197,1348,628,654]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="schiavettii">
<emphasis id="B93AC65DFFB6FFB9FB6AFDA2847C60E8" box="[1197,1348,628,654]" italics="true" pageId="7" pageNumber="151">P. schiavettii</emphasis>
</taxonomicName>
and
<taxonomicName id="4C4E61CCFFB6FFB9FF7AFD4F800660D7" authorityName="Jouin &amp; Swedmark" authorityYear="1965" box="[189,318,663,690]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="limicola">
<emphasis id="B93AC65DFFB6FFB9FF7AFD4F81F760D7" box="[189,207,664,689]" italics="true" pageId="7" pageNumber="151">P</emphasis>
.
<emphasis id="B93AC65DFFB6FFB9FF1AFD40800660D7" box="[221,318,663,689]" italics="true" pageId="7" pageNumber="151">limicola</emphasis>
</taxonomicName>
, the chaetae on chaetiger 1 are longer in comparison to other chaetigers. Finally, the
<typeStatus id="54F5A4EDFFB6FFB9FAD7FD40844F60D7" box="[1296,1399,663,689]" pageId="7" pageNumber="151" type="holotype">holotype</typeStatus>
of
<taxonomicName id="4C4E61CCFFB6FFB9FF1BFD6C804B60B2" authorityName="Mendes &amp; Rodrigues &amp; Rizzo" authorityYear="2024" box="[220,371,698,724]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="schiavettii">
<emphasis id="B93AC65DFFB6FFB9FF1BFD6C804B60B2" box="[220,371,698,724]" italics="true" pageId="7" pageNumber="151">P. schiavettii</emphasis>
</taxonomicName>
presents a maximum body width at chaetiger 4, but this characteristic is variable among specimens of
<taxonomicName id="4C4E61CCFFB6FFB9FE99FD0980CE6091" authorityName="Mendes &amp; Rodrigues &amp; Rizzo" authorityYear="2024" box="[350,502,733,759]" class="Polychaeta" family="Nerillidae" genus="Paranerilla" kingdom="Animalia" pageId="7" pageNumber="151" phylum="Annelida" rank="species" species="schiavettii">
<emphasis id="B93AC65DFFB6FFB9FE99FD0980CE6091" box="[350,502,733,759]" italics="true" pageId="7" pageNumber="151">P. schiavettii</emphasis>
</taxonomicName>
, with chaetiger 4 commonly similar to other chaetigers in some
<typeStatus id="54F5A4EDFFB6FFB9FB2DFD098466609E" box="[1258,1374,734,760]" pageId="7" pageNumber="151" type="paratype">paratypes</typeStatus>
.
</paragraph>
</subSubSection>
</treatment>
</document>