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<document ID-DOI="http://dx.doi.org/10.3897/zookeys.1152.98258" ID-Pensoft-Pub="1313-2970-1152-45" ID-Pensoft-UUID="7CD89C59351C5B439C82F9AEEA86CC51" ID-ZooBank="D20AFC88096345FEA8B074D00728424F" ModsDocID="1313-2970-1152-45" checkinTime="1678295859973" checkinUser="pensoft" docAuthor="Innabi, Julie, Stout, Carla C. &amp; Valdes, Angel" docDate="2023" docId="F3330D3A2D8159F89D11D6BBA56FFC21" docLanguage="en" docName="ZooKeys 1152: 45-95" docOrigin="ZooKeys 1152" docPubDate="2023-03-07" docSource="http://dx.doi.org/10.3897/zookeys.1152.98258" docTitle="Rostanga poddubetskaiae Innabi &amp; Stout &amp; Valdés 2023, sp. nov." docType="treatment" docUuid="EF949405-58D8-4D48-AD09-1CB3CE3993F5" docUuidSource="ZooBank" docVersion="1" id="7CD89C59351C5B439C82F9AEEA86CC51" lastPageNumber="45" masterDocId="7CD89C59351C5B439C82F9AEEA86CC51" masterDocTitle="Seven new &quot; cryptic &quot; species of Discodorididae (Mollusca, Gastropoda, Nudibranchia) from New Caledonia" masterLastPageNumber="95" masterPageNumber="45" pageNumber="45" updateTime="1678295859973" updateUser="pensoft">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Seven new &quot; cryptic &quot; species of Discodorididae (Mollusca, Gastropoda, Nudibranchia) from New Caledonia</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Innabi, Julie</mods:namePart>
<mods:affiliation>Department of Biological Sciences, California State Polytechnic University Pomona, 3801 West Temple Avenue, Pomona, California 91768, USA</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Stout, Carla C.</mods:namePart>
<mods:affiliation>Department of Biological Sciences, California State Polytechnic University Pomona, 3801 West Temple Avenue, Pomona, California 91768, USA</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Valdes, Angel</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0002-2347-4896</mods:nameIdentifier>
<mods:affiliation>Department of Biological Sciences, California State Polytechnic University Pomona, 3801 West Temple Avenue, Pomona, California 91768, USA</mods:affiliation>
<mods:nameIdentifier type="email">aavaldes@cpp.edu</mods:nameIdentifier>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>ZooKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2023</mods:date>
<mods:detail type="pubDate">
<mods:number>2023-03-07</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>1152</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>45</mods:start>
<mods:end>95</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/zookeys.1152.98258</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/zookeys.1152.98258</mods:identifier>
<mods:identifier type="Pensoft-Pub">1313-2970-1152-45</mods:identifier>
<mods:identifier type="ZooBank">D20AFC88096345FEA8B074D00728424F</mods:identifier>
<mods:identifier type="Pensoft-UUID">7CD89C59351C5B439C82F9AEEA86CC51</mods:identifier>
</mods:mods>
<treatment LSID="urn:lsid:zoobank.org:act:EF949405-58D8-4D48-AD09-1CB3CE3993F5" httpUri="http://treatment.plazi.org/id/F3330D3A2D8159F89D11D6BBA56FFC21" lastPageNumber="45" pageId="0" pageNumber="45">
<subSubSection pageId="0" pageNumber="45" type="nomenclature">
<paragraph pageId="0" pageNumber="45">
<taxonomicName LSID="https://zoobank.org/EF949405-58D8-4D48-AD09-1CB3CE3993F5" authority="Innabi &amp; Stout &amp; Valdés, 2023" authorityName="Innabi &amp; Stout &amp; Valdés" authorityYear="2023" class="Gastropoda" family="Discodorididae" genus="Rostanga" higherTaxonomySource="treatment-meta" kingdom="Animalia" lsidName="Rostanga poddubetskaiae" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="species" species="poddubetskaiae" status="sp. nov.">Rostanga poddubetskaiae</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="45">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="45" type="description">
<paragraph pageId="0" pageNumber="45">
<figureCitation captionStart="Figure 11" captionStartId="F11" captionText="Figure 11. Photographs of live animals of Rostanga poddubetskaiae sp. nov. A holotype MNHN IM- 2013 - 86199 on black background B holotype (MNHN IM- 2013 - 86199) and MNHN IM- 2013 - 86217 in situ with egg masses C MNHN IM- 2013 - 86205 in situ D MNHN IM- 2013 - 86216 and MNHN IM- 2013 - 86217 in situ E MNHN IM- 2013 - 86209 on black background." figureDoi="10.3897/zookeys.1152.98258.figure11" httpUri="https://binary.pensoft.net/fig/820839" pageId="0" pageNumber="45">Figs 11</figureCitation>
<figureCitation captionStart="Figure 12" captionStartId="F12" captionText="Figure 12. Drawing of the reproductive system of Rostanga poddubetskaiae sp. nov., MNHN IM- 2013 - 86202. Abbreviations: am, ampulla; bc, bursa copulatrix; dd, deferent duct; fg, female gland complex; pr, prostate; sr, seminal receptacle; vg, vagina." figureDoi="10.3897/zookeys.1152.98258.figure12" httpUri="https://binary.pensoft.net/fig/820840" pageId="0" pageNumber="45">, 12</figureCitation>
<figureCitation captionStart="Figure 13" captionStartId="F13" captionText="Figure 13. SEM of the radula of specimens of Rostanga poddubetskaiae sp. nov., MNHN IM- 2013 - 86205 A innermost teeth B mid-lateral teeth C outer lateral teeth." figureDoi="10.3897/zookeys.1152.98258.figure13" httpUri="https://binary.pensoft.net/fig/820841" pageId="0" pageNumber="45">, 13</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="45" type="type material">
<paragraph pageId="0" pageNumber="45">Type material.</paragraph>
<paragraph pageId="0" pageNumber="45">
<emphasis bold="true" italics="true" pageId="0" pageNumber="45">Holotype</emphasis>
: Anse de Koumac, Koumac, New Caledonia (
<geoCoordinate degrees="20" direction="south" minutes="34" orientation="latitude" precision="925" value="-20.566668">20°34'S</geoCoordinate>
,
<geoCoordinate degrees="164" direction="east" minutes="16" orientation="longitude" precision="925" value="164.26666">164°16'E</geoCoordinate>
), 4 m depth [Koumac 2.1 stn. KR206], 5 Sep 2018, 1 specimen 23 mm long (MNHN IM-2013-86199, isolate JI01).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="45" type="materials_examined">
<paragraph pageId="0" pageNumber="45">Other material examined.</paragraph>
<paragraph pageId="0" pageNumber="45">
Anse de Koumac, Koumac,
<collectingCountry name="New Caledonia">New Caledonia</collectingCountry>
(
<geoCoordinate degrees="20" direction="south" minutes="34" orientation="latitude" precision="925" value="-20.566668">20°34'S</geoCoordinate>
,
<geoCoordinate degrees="164" direction="east" minutes="16" orientation="longitude" precision="925" value="164.26666">164°16'E</geoCoordinate>
),
<quantity metricMagnitude="0" metricUnit="m" metricValue="4.0" unit="m" value="4.0">4 m</quantity>
depth [Koumac 2.1 stn. KR206],
<date value="2018-09-05">5 Sep 2018</date>
,
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="2.5" unit="mm" value="25.0">25 mm</quantity>
long (MNHN IM-2013-86200, isolate JI17);
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="1.2" unit="mm" value="12.0">12 mm</quantity>
long (MNHN IM-2013-86201, isolate JI32);
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="2.6" unit="mm" value="26.0">26 mm</quantity>
long, dissected (MNHN IM-2013-86202, isolate JI03);
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="1.9" unit="mm" value="19.0">19 mm</quantity>
long, dissected (MNHN IM-2013-86203, isolate JI12);
<materialsCitation collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" country="New Caledonia" elevation="5" latitude="-20.77" location="Cap Deverd" longLatPrecision="126" longitude="164.37666" municipality="Koumac" specimenCount="1">
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="1.6" unit="mm" value="16.0">16 mm</quantity>
long, dissected (MNHN IM-2013-86204, isolate JI20).
<location LSID="urn:lsid:plazi:treatment:F3330D3A2D8159F89D11D6BBA56FFC21:5D6721564069C10DEA3FF0288A65B41A" country="New Caledonia" latitude="-20.77" longLatPrecision="126" longitude="164.37666" municipality="Koumac" name="Cap Deverd">Cap Deverd</location>
,
<collectingMunicipality>Koumac</collectingMunicipality>
,
<collectingCountry name="New Caledonia">New Caledonia</collectingCountry>
(
<geoCoordinate degrees="20" direction="south" minutes="46.2" orientation="latitude" precision="92" value="-20.77">20°46.2'S</geoCoordinate>
,
<geoCoordinate degrees="164" direction="east" minutes="22.6" orientation="longitude" precision="92" value="164.37666">164°22.6'E</geoCoordinate>
),
<elevation metricMagnitude="0" metricUnit="m" metricValue="5.0" unit="m" value="5.0">
<quantity metricMagnitude="0" metricUnit="m" metricValue="5.0" unit="m" value="5.0">5 m</quantity>
depth
</elevation>
[Koumac 2.1 stn. KR213]
</materialsCitation>
,
<date value="2018-09-29">29 Sep 2018</date>
,
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="2.6" unit="mm" value="26.0">26 mm</quantity>
long, dissected (MNHN IM-2013-86205, isolate JI27);
<materialsCitation collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" country="New Caledonia" elevation="5" latitude="-20.576666" location="Anse de Koumac" longLatPrecision="126" longitude="164.26833" municipality="Koumac" specimenCount="1">
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="2.8" unit="mm" value="28.0">28 mm</quantity>
long, dissected (MNHN IM-2013-86206, isolate JI13).
<location LSID="urn:lsid:plazi:treatment:F3330D3A2D8159F89D11D6BBA56FFC21:B5CF3FC0D2CB54C9ECAEEBE40B7E931E" country="New Caledonia" latitude="-20.576666" longLatPrecision="126" longitude="164.26833" municipality="Koumac" name="Anse de Koumac">Anse de Koumac</location>
,
<collectingMunicipality>Koumac</collectingMunicipality>
,
<collectingCountry name="New Caledonia">New Caledonia</collectingCountry>
(
<geoCoordinate degrees="20" direction="south" minutes="34.6" orientation="latitude" precision="92" value="-20.576666">20°34.6'S</geoCoordinate>
,
<geoCoordinate degrees="164" direction="east" minutes="16.1" orientation="longitude" precision="92" value="164.26833">164°16.1'E</geoCoordinate>
),
<elevation metricMagnitude="0" metricUnit="m" metricValue="5.0" unit="m" value="5.0">
<quantity metricMagnitude="0" metricUnit="m" metricValue="5.0" unit="m" value="5.0">5 m</quantity>
depth
</elevation>
[Koumac 2.1 stn. KR219]
</materialsCitation>
,
<date value="2018-09-17">17 Sep 2018</date>
,
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="1.2" unit="mm" value="12.0">12 mm</quantity>
long (MNHN IM-2013-86207, isolate JI39);
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="2.3" unit="mm" value="23.0">23 mm</quantity>
long, dissected (MNHN IM-2013-86208, isolate JI25);
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="2.6" unit="mm" value="26.0">26 mm</quantity>
long (MNHN IM-2013-86209, isolate JI18);
<materialsCitation collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" country="New Caledonia" elevation="3" latitude="-20.593334" location="Koumac" longLatPrecision="126" longitude="164.27167" specimenCount="1">
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="1.7" unit="mm" value="17.0">17 mm</quantity>
long (MNHN IM-2013-86210, isolate JI40).
<location LSID="urn:lsid:plazi:treatment:F3330D3A2D8159F89D11D6BBA56FFC21:601979D71C2DF3A290A34F414FC8DDCB" country="New Caledonia" latitude="-20.593334" longLatPrecision="126" longitude="164.27167" name="Koumac">Koumac</location>
,
<collectingCountry name="New Caledonia">New Caledonia</collectingCountry>
(
<geoCoordinate degrees="20" direction="south" minutes="35.6" orientation="latitude" precision="92" value="-20.593334">20°35.6'S</geoCoordinate>
,
<geoCoordinate degrees="164" direction="east" minutes="16.3" orientation="longitude" precision="92" value="164.27167">164°16.3'E</geoCoordinate>
),
<elevation metricMagnitude="0" metricUnit="m" metricValue="3.0" unit="m" value="3.0">
<quantity metricMagnitude="0" metricUnit="m" metricValue="3.0" unit="m" value="3.0">3 m</quantity>
depth
</elevation>
[Koumac 2.2 stn. KR230]
</materialsCitation>
,
<date value="2019-03-02">2 Mar 2019</date>
,
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="2.0" unit="mm" value="20.0">20 mm</quantity>
long (MNHN IM-2013-86213, isolate JI36);
<date value="2019-03-02">2 Mar 2019</date>
,
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="2.1" unit="mm" value="21.0">21 mm</quantity>
long (MNHN IM-2013-86214, isolate JI37);
<materialsCitation collectingDate="2019-03-03" country="New Caledonia" elevation="7" latitude="-20.581667" location="Pointe de Pandop" longLatPrecision="126" longitude="164.275" municipality="Koumac" specimenCount="1">
<collectingDate value="2019-03-03">3 Mar 2019</collectingDate>
,
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="2.0" unit="mm" value="20.0">20 mm</quantity>
long (MNHN IM-2013-86212, isolate JI31).
<location LSID="urn:lsid:plazi:treatment:F3330D3A2D8159F89D11D6BBA56FFC21:6D0E0A870CBA1738780299A143AE753C" country="New Caledonia" latitude="-20.581667" longLatPrecision="126" longitude="164.275" municipality="Koumac" name="Pointe de Pandop">Pointe de Pandop</location>
,
<collectingMunicipality>Koumac</collectingMunicipality>
,
<collectingCountry name="New Caledonia">New Caledonia</collectingCountry>
(
<geoCoordinate degrees="20" direction="south" minutes="34.9" orientation="latitude" precision="92" value="-20.581667">20°34.9'S</geoCoordinate>
,
<geoCoordinate degrees="164" direction="east" minutes="16.5" orientation="longitude" precision="92" value="164.275">164°16.5'E</geoCoordinate>
),
<elevation metricMagnitude="0" metricUnit="m" metricValue="7.0" unit="m" value="7.0">
<quantity metricMagnitude="0" metricUnit="m" metricValue="7.0" unit="m" value="7.0">7 m</quantity>
depth
</elevation>
[Koumac 2.1 stn. KR868]
</materialsCitation>
,
<date value="2018-09-26">26 Sep 2018</date>
,
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="2.6" unit="mm" value="26.0">26 mm</quantity>
long (MNHN IM-2013-86215, isolate JI15);
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="2.4" unit="mm" value="24.0">24 mm</quantity>
long (MNHN IM-2013-86216, isolate JI24);
<materialsCitation collectingDate="2023-01-01" collectingDateMax="2023-12-31" collectingDateMin="2023-01-01" country="New Caledonia" elevation="12" latitude="-20.561666" location="Koumac" longLatPrecision="126" longitude="164.21834" specimenCount="1">
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="1.4" unit="mm" value="14.0">14 mm</quantity>
long (MNHN IM-2013-86217, isolate JI38).
<location LSID="urn:lsid:plazi:treatment:F3330D3A2D8159F89D11D6BBA56FFC21:5870A318E40CF6A580183852F460BE44" country="New Caledonia" latitude="-20.561666" longLatPrecision="126" longitude="164.21834" name="Koumac">Koumac</location>
,
<collectingCountry name="New Caledonia">New Caledonia</collectingCountry>
(
<geoCoordinate degrees="20" direction="south" minutes="33.7" orientation="latitude" precision="92" value="-20.561666">20°33.7'S</geoCoordinate>
,
<geoCoordinate degrees="164" direction="east" minutes="13.1" orientation="longitude" precision="92" value="164.21834">164°13.1'E</geoCoordinate>
),
<elevation metricMagnitude="1" metricUnit="m" metricValue="1.2" unit="m" value="12.0">
<quantity metricMagnitude="1" metricUnit="m" metricValue="1.2" unit="m" value="12.0">12 m</quantity>
depth
</elevation>
[Koumac 2.3 stn. KR206]
</materialsCitation>
,
<date value="2019-11-03">3 Nov 2019</date>
,
<specimenCount type="generic">1 specimen</specimenCount>
<quantity metricMagnitude="-2" metricUnit="m" metricValue="1.9" unit="mm" value="19.0">19 mm</quantity>
long (MNHN IM-2013-86218, isolate JI07).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="45" type="description">
<paragraph pageId="0" pageNumber="45">Description.</paragraph>
<paragraph pageId="0" pageNumber="45">
Body oval, elongate, completely covered with numerous caryophyllidia (Fig.
<figureCitation captionStart="Figure 11" captionStartId="F11" captionText="Figure 11. Photographs of live animals of Rostanga poddubetskaiae sp. nov. A holotype MNHN IM- 2013 - 86199 on black background B holotype (MNHN IM- 2013 - 86199) and MNHN IM- 2013 - 86217 in situ with egg masses C MNHN IM- 2013 - 86205 in situ D MNHN IM- 2013 - 86216 and MNHN IM- 2013 - 86217 in situ E MNHN IM- 2013 - 86209 on black background." figureDoi="10.3897/zookeys.1152.98258.figure11" httpUri="https://binary.pensoft.net/fig/820839" pageId="0" pageNumber="45">11</figureCitation>
). Branchial and rhinophoral sheaths low, simple, circular; gill composed of seven wide, tripinnate branchial leaves, extended laterally, lying on the dorsum in the living animal. A low, irregular, inconspicuous ridge runs between the rhinophores and the gill, not clearly visible in all specimens. Rhinophores very elongate, almost conical, lamellated, with 15 or 16 lamellae. Body color pinkish to orange, with irregular darker patches all over the dorsum. Rhinophores reddish; branchial leaves the same color as the dorsum.
</paragraph>
<caption doi="10.3897/zookeys.1152.98258.figure11" httpUri="https://binary.pensoft.net/fig/820839" pageId="0" pageNumber="45" start="Figure 11" startId="F11">
<paragraph pageId="0" pageNumber="45">
<emphasis bold="true" pageId="0" pageNumber="45">Figure 11.</emphasis>
Photographs of live animals of
<taxonomicName authorityName="Innabi &amp; Stout &amp; Valdés" authorityYear="2023" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga poddubetskaiae" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="species" species="poddubetskaiae">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga poddubetskaiae</emphasis>
</taxonomicName>
sp. nov.
<emphasis bold="true" pageId="0" pageNumber="45">A</emphasis>
holotype MNHN IM-2013-86199 on black background
<emphasis bold="true" pageId="0" pageNumber="45">B</emphasis>
holotype (MNHN IM-2013-86199) and MNHN IM-2013-86217 in situ with egg masses
<emphasis bold="true" pageId="0" pageNumber="45">C</emphasis>
MNHN IM-2013-86205 in situ
<emphasis bold="true" pageId="0" pageNumber="45">D</emphasis>
MNHN IM-2013-86216 and MNHN IM-2013-86217 in situ
<emphasis bold="true" pageId="0" pageNumber="45">E</emphasis>
MNHN IM-2013-86209 on black background.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="45">
Reproductive system (Fig.
<figureCitation captionStart="Figure 12" captionStartId="F12" captionText="Figure 12. Drawing of the reproductive system of Rostanga poddubetskaiae sp. nov., MNHN IM- 2013 - 86202. Abbreviations: am, ampulla; bc, bursa copulatrix; dd, deferent duct; fg, female gland complex; pr, prostate; sr, seminal receptacle; vg, vagina." figureDoi="10.3897/zookeys.1152.98258.figure12" httpUri="https://binary.pensoft.net/fig/820840" pageId="0" pageNumber="45">12</figureCitation>
) with a long, narrow, curved ampulla that connects with the female gland complex and an irregular, elongate prostate. The prostate is wider than the ampulla, but it narrows substantially into a long, folded tube, before expanding into the short, wide deferent duct. The penis is unarmed. The vagina is elongate, several times narrower than the deferent duct, connecting directly to the large, oval bursa copulatrix. The smaller, elongate seminal receptacle also connects to the bursa copulatrix next to the vaginal connection, and the short uterine duct that enters the female gland complex. The bursa copulatrix is several times larger than the seminal receptacle.
</paragraph>
<caption doi="10.3897/zookeys.1152.98258.figure12" httpUri="https://binary.pensoft.net/fig/820840" pageId="0" pageNumber="45" start="Figure 12" startId="F12">
<paragraph pageId="0" pageNumber="45">
<emphasis bold="true" pageId="0" pageNumber="45">Figure 12.</emphasis>
Drawing of the reproductive system of
<taxonomicName authorityName="Innabi &amp; Stout &amp; Valdés" authorityYear="2023" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga poddubetskaiae" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="species" species="poddubetskaiae">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga poddubetskaiae</emphasis>
</taxonomicName>
sp. nov., MNHN IM-2013-86202. Abbreviations: am, ampulla; bc, bursa copulatrix; dd, deferent duct; fg, female gland complex; pr, prostate; sr, seminal receptacle; vg, vagina.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="45">
Radular formula 28
<normalizedToken originalValue="×">x</normalizedToken>
73.0.73 in a 23-mm long specimen (MNHN IM-2013-86208), 36
<normalizedToken originalValue="×">x</normalizedToken>
80.0.80 in a 26-mm long specimen (MNHN IM-2013-86205), and 37
<normalizedToken originalValue="×">x</normalizedToken>
81.0.81 in a 26-mm long (MNHN IM-2013-86209). Rachidian teeth absent. Inner and mid-lateral teeth hamate, having a small cusp and lacking denticles (Fig.
<figureCitation captionStart="Figure 13" captionStartId="F13" captionText="Figure 13. SEM of the radula of specimens of Rostanga poddubetskaiae sp. nov., MNHN IM- 2013 - 86205 A innermost teeth B mid-lateral teeth C outer lateral teeth." figureDoi="10.3897/zookeys.1152.98258.figure13" httpUri="https://binary.pensoft.net/fig/820841" pageId="0" pageNumber="45">13A, B</figureCitation>
). Innermost teeth very small in comparison to mid-laterals (Fig.
<figureCitation captionStart="Figure 13" captionStartId="F13" captionText="Figure 13. SEM of the radula of specimens of Rostanga poddubetskaiae sp. nov., MNHN IM- 2013 - 86205 A innermost teeth B mid-lateral teeth C outer lateral teeth." figureDoi="10.3897/zookeys.1152.98258.figure13" httpUri="https://binary.pensoft.net/fig/820841" pageId="0" pageNumber="45">13A</figureCitation>
). The teeth increase in size gradually towards the medial portion of the half-row (Fig.
<figureCitation captionStart="Figure 13" captionStartId="F13" captionText="Figure 13. SEM of the radula of specimens of Rostanga poddubetskaiae sp. nov., MNHN IM- 2013 - 86205 A innermost teeth B mid-lateral teeth C outer lateral teeth." figureDoi="10.3897/zookeys.1152.98258.figure13" httpUri="https://binary.pensoft.net/fig/820841" pageId="0" pageNumber="45">13B</figureCitation>
). Outermost teeth small, decreasing in size gradually, and hamate (Fig.
<figureCitation captionStart="Figure 13" captionStartId="F13" captionText="Figure 13. SEM of the radula of specimens of Rostanga poddubetskaiae sp. nov., MNHN IM- 2013 - 86205 A innermost teeth B mid-lateral teeth C outer lateral teeth." figureDoi="10.3897/zookeys.1152.98258.figure13" httpUri="https://binary.pensoft.net/fig/820841" pageId="0" pageNumber="45">13C</figureCitation>
), outermost one with 13-20 irregular denticles. No jaw was observed, labial cuticle smooth.
</paragraph>
<caption doi="10.3897/zookeys.1152.98258.figure13" httpUri="https://binary.pensoft.net/fig/820841" pageId="0" pageNumber="45" start="Figure 13" startId="F13">
<paragraph pageId="0" pageNumber="45">
<emphasis bold="true" pageId="0" pageNumber="45">Figure 13.</emphasis>
SEM of the radula of specimens of
<taxonomicName authorityName="Innabi &amp; Stout &amp; Valdés" authorityYear="2023" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga poddubetskaiae" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="species" species="poddubetskaiae">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga poddubetskaiae</emphasis>
</taxonomicName>
sp. nov., MNHN IM-2013-86205
<emphasis bold="true" pageId="0" pageNumber="45">A</emphasis>
innermost teeth
<emphasis bold="true" pageId="0" pageNumber="45">B</emphasis>
mid-lateral teeth
<emphasis bold="true" pageId="0" pageNumber="45">C</emphasis>
outer lateral teeth.
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="45" type="biology_ecology">
<paragraph pageId="0" pageNumber="45">Biology.</paragraph>
<paragraph pageId="0" pageNumber="45">All the specimens were found on an unidentified species of sponge while SCUBA diving. The presence of these highly cryptic nudibranchs was initially determined in the field by observing the egg masses on the sponges. In most cases, to separate the nudibranchs, the sponges were brought to the lab and examined under a microscope.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="45" type="etymology">
<paragraph pageId="0" pageNumber="45">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="45">This species is named after Marina Poddubetskaia, indefatigable collector and diver, who first discovered the animals here described during the two of the Koumac expeditions.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="45" type="remarks">
<paragraph pageId="0" pageNumber="45">Remarks.</paragraph>
<paragraph pageId="0" pageNumber="45">
<taxonomicName authorityName="Innabi &amp; Stout &amp; Valdés" authorityYear="2023" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga poddubetskaiae" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="species" species="poddubetskaiae">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga poddubetskaiae</emphasis>
</taxonomicName>
sp. nov. is provisionally assigned to the genus
<taxonomicName authorityName="Bergh" authorityYear="1879" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga</emphasis>
</taxonomicName>
based on the results of the molecular phylogenetic analyses, which place this species solidly nested within a clade containing other species identified as members of
<taxonomicName authorityName="Bergh" authorityYear="1879" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga</emphasis>
</taxonomicName>
. However, there are some notable differences between
<taxonomicName authorityName="Innabi &amp; Stout &amp; Valdés" authorityYear="2023" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga poddubetskaiae" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="species" species="poddubetskaiae">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga poddubetskaiae</emphasis>
</taxonomicName>
sp. nov. and the diagnoses of the genus
<taxonomicName authorityName="Bergh" authorityYear="1879" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga</emphasis>
</taxonomicName>
provided by
<bibRefCitation DOI="https://doi.org/10.1111/j.1096-3642.1989.tb01832.x" author="Rudman, WB" journalOrPublisher="Zoological Journal of the Linnean Society" pageId="0" pageNumber="45" pagination="281 - 338" refId="B78" refString="Rudman, WB, Avern, GJ, 1989. The genus Rostanga Bergh, 1879 (Nudibranchia: Dorididae) in the Indo-West Pacific. Zoological Journal of the Linnean Society 96 (3): 281 - 338, DOI: https://doi.org/10.1111/j.1096-3642.1989.tb01832.x" title="The genus Rostanga Bergh, 1879 (Nudibranchia: Dorididae) in the Indo-West Pacific." url="https://doi.org/10.1111/j.1096-3642.1989.tb01832.x" volume="96" year="1989">Rudman and Avern (1989)</bibRefCitation>
and
<bibRefCitation DOI="https://doi.org/10.1111/j.1096-3642.2001.tb00689.x" author="Valdes, A" journalOrPublisher="Zoological Journal of the Linnean Society" pageId="0" pageNumber="45" pagination="103 - 198" refId="B84" refString="Valdes, A, Gosliner, TM, 2001. Systematics and phylogeny of the caryophyllidia-bearing dorids (Mollusca, Nudibranchia), with the description of a new genus and four new species from Indo-Pacific deep waters. Zoological Journal of the Linnean Society 133 (2): 103 - 198, DOI: https://doi.org/10.1111/j.1096-3642.2001.tb00689.x" title="Systematics and phylogeny of the caryophyllidia-bearing dorids (Mollusca, Nudibranchia), with the description of a new genus and four new species from Indo-Pacific deep waters." url="https://doi.org/10.1111/j.1096-3642.2001.tb00689.x" volume="133" year="2001">
<normalizedToken originalValue="Valdés">Valdes</normalizedToken>
and Gosliner (2001)
</bibRefCitation>
, such as the absence of jaws and elongate outermost radular teeth, and the presence of short caryophyllidia; moreover, the arrangement of the branchial leaves flattened against the dorsum and the presence of a dorsal ridge are unusual for a species of
<taxonomicName authorityName="Bergh" authorityYear="1879" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga</emphasis>
</taxonomicName>
. Additional resolution in the phylogeny of dorid nudibranchs and a larger sample are needed before this species can be placed in a genus with confidence.
</paragraph>
<paragraph pageId="0" pageNumber="45">
<taxonomicName authorityName="Innabi &amp; Stout &amp; Valdés" authorityYear="2023" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga poddubetskaiae" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="species" species="poddubetskaiae">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga poddubetskaiae</emphasis>
</taxonomicName>
sp. nov. appears to be sister to
<taxonomicName authorityName="Garovoy, Valdes &amp; Gosliner" authorityYear="2001" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga elandsia" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="species" species="elandsia">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga elandsia</emphasis>
</taxonomicName>
Garovoy,
<normalizedToken originalValue="Valdés">Valdes</normalizedToken>
&amp; Gosliner, 2001 from South Africa, but additional species need to be included in the analysis to confirm those relationships. Morphologically,
<taxonomicName lsidName="R. poddubetskaiae" pageId="0" pageNumber="45" rank="species" species="poddubetskaiae">
<emphasis italics="true" pageId="0" pageNumber="45">R. poddubetskaiae</emphasis>
</taxonomicName>
sp. nov. exhibits a number of differences from other members of this genus, including the presence of a dorsal ridge, elongate rhinophores, a gill flattened against the body, and smooth, hamate inner and mid radular teeth, and short, pectinate outermost lateral teeth. The Indo-Pacific species of
<taxonomicName authorityName="Bergh" authorityYear="1879" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga</emphasis>
</taxonomicName>
have been reviewed in papers by
<bibRefCitation DOI="https://doi.org/10.1111/j.1096-3642.1989.tb01832.x" author="Rudman, WB" journalOrPublisher="Zoological Journal of the Linnean Society" pageId="0" pageNumber="45" pagination="281 - 338" refId="B78" refString="Rudman, WB, Avern, GJ, 1989. The genus Rostanga Bergh, 1879 (Nudibranchia: Dorididae) in the Indo-West Pacific. Zoological Journal of the Linnean Society 96 (3): 281 - 338, DOI: https://doi.org/10.1111/j.1096-3642.1989.tb01832.x" title="The genus Rostanga Bergh, 1879 (Nudibranchia: Dorididae) in the Indo-West Pacific." url="https://doi.org/10.1111/j.1096-3642.1989.tb01832.x" volume="96" year="1989">Rudman and Avern (1989)</bibRefCitation>
,
<bibRefCitation DOI="https://doi.org/10.18941/venusjjm.50.1_43" author="Baba, K" journalOrPublisher="Venus" pageId="0" pageNumber="45" pagination="43 - 53" refId="B5" refString="Baba, K, 1991. Review of the genus Rostanga of Japan with the description of a new species (Nudibranchia: Dorididae). Venus 50: 43 - 53, DOI: https://doi.org/10.18941/venusjjm.50.1_43" title="Review of the genus Rostanga of Japan with the description of a new species (Nudibranchia: Dorididae)." url="https://doi.org/10.18941/venusjjm.50.1_43" volume="50" year="1991">Baba (1991)</bibRefCitation>
, and
<bibRefCitation DOI="https://doi.org/10.1093/mollus/67.2.131" author="Garovoy, JB" journalOrPublisher="The Journal of Molluscan Studies" pageId="0" pageNumber="45" pagination="131 - 144" refId="B37" refString="Garovoy, JB, Valdes, A, Gosliner, TM, 2001. Phylogeny of the genus Rostanga (Nudibranchia), with descriptions of three new species from South Africa. The Journal of Molluscan Studies 67 (2): 131 - 144, DOI: https://doi.org/10.1093/mollus/67.2.131" title="Phylogeny of the genus Rostanga (Nudibranchia), with descriptions of three new species from South Africa." url="https://doi.org/10.1093/mollus/67.2.131" volume="67" year="2001">Garovoy et al. (2001)</bibRefCitation>
, and none of them have external and internal characteristics present in
<taxonomicName lsidName="R. poddubetskaiae" pageId="0" pageNumber="45" rank="species" species="poddubetskaiae">
<emphasis italics="true" pageId="0" pageNumber="45">R. poddubetskaiae</emphasis>
</taxonomicName>
sp. nov. The only exception is
<taxonomicName baseAuthorityName="Burn" baseAuthorityYear="1969" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga crawfordi" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="species" species="crawfordi">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga crawfordi</emphasis>
</taxonomicName>
(Burn, 1969), described as
<taxonomicName authorityName="Rudman &amp; Avern" authorityYear="1989" class="Gastropoda" family="Discodorididae" genus="Rostanga" kingdom="Animalia" lsidName="Rostanga australis" order="Nudibranchia" pageId="0" pageNumber="45" phylum="Mollusca" rank="species" species="australis">
<emphasis italics="true" pageId="0" pageNumber="45">Rostanga australis</emphasis>
</taxonomicName>
Rudman &amp; Avern, 1989, which appears to have a dorsal ridge in some specimens (see
<bibRefCitation DOI="https://doi.org/10.1111/j.1096-3642.1989.tb01832.x" author="Rudman, WB" journalOrPublisher="Zoological Journal of the Linnean Society" pageId="0" pageNumber="45" pagination="281 - 338" refId="B78" refString="Rudman, WB, Avern, GJ, 1989. The genus Rostanga Bergh, 1879 (Nudibranchia: Dorididae) in the Indo-West Pacific. Zoological Journal of the Linnean Society 96 (3): 281 - 338, DOI: https://doi.org/10.1111/j.1096-3642.1989.tb01832.x" title="The genus Rostanga Bergh, 1879 (Nudibranchia: Dorididae) in the Indo-West Pacific." url="https://doi.org/10.1111/j.1096-3642.1989.tb01832.x" volume="96" year="1989">Rudman and Avern 1989</bibRefCitation>
;
<bibRefCitation author="Coleman, N" journalOrPublisher="Invertebrate Systematics" pageId="0" pageNumber="45" refId="B20" refString="Coleman, N, 2008. Nudibranchs Encyclopedia: Catalogue of Asia/Indo-Pacific Sea Slugs. Neville Coleman's Underwater Geographic, 416 pp." title="Nudibranchs Encyclopedia: Catalogue of Asia / Indo-Pacific Sea Slugs. Neville Coleman's Underwater Geographic, 416 pp." year="2008">Coleman 2008</bibRefCitation>
) and a similar external coloration to
<taxonomicName lsidName="R. poddubetskaiae" pageId="0" pageNumber="45" rank="species" species="poddubetskaiae">
<emphasis italics="true" pageId="0" pageNumber="45">R. poddubetskaiae</emphasis>
</taxonomicName>
sp. nov., but the radular teeth are very different: specifically, the outer teeth are elongate with numerous denticles on the tip.
</paragraph>
</subSubSection>
</treatment>
</document>
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