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<document id="7502D96854CDE17E35977A1E53C9117B" ID-CLB-Dataset="8067" ID-DOI="10.11646/zootaxa.4933.1.3" ID-GBIF-Dataset="1ec7cff3-1bd4-4038-87fc-8a6d87f4c7ef" ID-ISSN="1175-5326" ID-Zenodo-Dep="4547986" ID-ZooBank="303F97F8-463C-4A52-B5D7-28154E492493" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1613633388380" checkinUser="plazi" docAuthor="Cobo, M. Carmen &amp; Kocot, Kevin M." docDate="2021" docId="2E3387FBF44190076DFB7221FED9FDBF" docLanguage="en" docName="zootaxa.4933.1.3.pdf" docOrigin="Zootaxa 4933 (1)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Nematomenia divae Cobo &amp; Kocot 2021, sp. n." docType="treatment" docUuid="6D7A24D1-E1D5-4EC3-B21A-C59A9D073859" docUuidSource="ZooBank" docVersion="9" lastPageNumber="75" masterDocId="D20AFF83F44B900B6D6C734EFFD5FFDE" masterDocTitle="On the diversity of abyssal Dondersiidae (Mollusca: Aplacophora) with the description of a new genus, six new species, and a review of the family" masterLastPageNumber="97" masterPageNumber="63" pageNumber="73" updateTime="1698930165091" updateUser="ExternalLinkService" zenodo-license-document="CLOSED">
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<mods:title id="9B78D9F1838249362B623DFD3E9C9D5B">On the diversity of abyssal Dondersiidae (Mollusca: Aplacophora) with the description of a new genus, six new species, and a review of the family</mods:title>
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<mods:namePart id="E4A435D3902338BFF23514B2E0366D9F">Cobo, M. Carmen</mods:namePart>
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<mods:affiliation id="5F44FB61502185BAA8A7B7F1FB336BAD">Department of Zoology, Genetics and Physycal Antrhopology, University of Santiago de Compostela. Rúa Lope Gómez de Marzoa, s / n. Campus Vida. 15782 Santiago de Compostela, Spain. &amp; Department of Biological Sciences and Alabama Museum of Natural History, University of Alabama. 300 Hackberry Lane, Tuscaloosa, AL 35487, USA. &amp; kmkocot @ ua. edu; https: // orcid. org / 0000 - 0002 - 8673 - 2688</mods:affiliation>
<mods:nameIdentifier id="A7204C52270DD93D9823BD7C7D64459F" type="email">mariadelcarmen.cobo@usc.es</mods:nameIdentifier>
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<mods:namePart id="402F34B1CA0E03E28BFA3A7B4775E597">Kocot, Kevin M.</mods:namePart>
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<mods:affiliation id="260730E4345BC8526171DD5D4AF47B72">Department of Biological Sciences and Alabama Museum of Natural History, University of Alabama. 300 Hackberry Lane, Tuscaloosa, AL 35487, USA. &amp; kmkocot @ ua. edu; https: // orcid. org / 0000 - 0002 - 8673 - 2688</mods:affiliation>
<mods:nameIdentifier id="A055D8C5FE80D78D4F5F4E0AF2A53136" type="email">kmkocot@ua.edu</mods:nameIdentifier>
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<mods:title id="453AA2364DB793F656269926BB620584">Zootaxa</mods:title>
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<mods:date id="6083AD7210395CC8AE1ACE255F858888">2021</mods:date>
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<treatment id="2E3387FBF44190076DFB7221FED9FDBF" ID-DOI="http://doi.org/10.5281/zenodo.4558029" ID-GBIF-Taxon="179906340" ID-Zenodo-Dep="4558029" LSID="urn:lsid:zoobank.org:act:6D7A24D1-E1D5-4EC3-B21A-C59A9D073859" httpUri="http://treatment.plazi.org/id/2E3387FBF44190076DFB7221FED9FDBF" lastPageId="12" lastPageNumber="75" pageId="10" pageNumber="73">
<subSubSection id="EE806566F44190016DFB7221FE04FE57" box="[151,465,366,393]" pageId="10" pageNumber="73" type="nomenclature">
<paragraph id="A62536EDF44190016DFB7221FE04FE57" blockId="10.[151,465,366,429]" box="[151,465,366,393]" pageId="10" pageNumber="73">
<heading id="FD6D8181F44190016DFB7221FE04FE57" bold="true" box="[151,465,366,393]" fontSize="11" level="1" pageId="10" pageNumber="73" reason="1">
<emphasis id="94EEEAFFF44190016DFB7221FE04FE57" bold="true" box="[151,465,366,393]" pageId="10" pageNumber="73">
<taxonomicName id="619A4D6EF44190016DFB7221FE5DFE57" ID-CoL="7S9Z6" authority="Cobo &amp; Kocot, 2021" authorityName="Cobo &amp; Kocot" authorityYear="2021" box="[151,392,366,393]" class="Solenogastres" family="Dondersiidae" genus="Nematomenia" kingdom="Animalia" order="Pholidoskepia" pageId="10" pageNumber="73" phylum="Mollusca" rank="species" species="divae" status="sp. nov.">
<emphasis id="94EEEAFFF44190016DFB7221FE5DFE57" bold="true" box="[151,392,366,393]" italics="true" pageId="10" pageNumber="73">Nematomenia divae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="8FDD5784F44190016CE37221FE04FE57" box="[399,465,367,393]" pageId="10" pageNumber="73" rank="species">sp. n.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
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<subSubSection id="EE806566F44190016DFB72DDFE5AFE73" box="[151,399,403,429]" pageId="10" pageNumber="73" type="description">
<paragraph id="A62536EDF44190016DFB72DDFE5AFE73" blockId="10.[151,465,366,429]" box="[151,399,403,429]" pageId="10" pageNumber="73">
(
<figureCitation id="3EA12A68F44190016DF372DDFED5FE73" box="[159,256,403,429]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3</figureCitation>
,
<tableCitation id="EB180356F44190016C6072DDFEB9FE73" box="[268,364,403,429]" captionStart="TABLE 2" captionStartId="4.[151,239,512,536]" captionTargetPageId="4" captionText="TABLE 2. Examined specimens from DIVA (Latitudinal Gradients of Deep-Sea BioDIVersity in the Atlantic Ocean) expeditions. DIVA 2 (Me 63/2, 2005): Guinea. DIVA 3 (Me 79/1, 2008) Brazil. (A) anterior sections; (P) posterior sections; (S) SEM sclerite stubs; St (Station); (L) light microscopy sclerite preparations; (H) Holotype; (P) Paratype. In bold the new species." httpUri="http://table.plazi.org/id/F2E56665F44F900F6DFB714EFE93FD5A" pageId="10" pageNumber="73" tableUuid="F2E56665F44F900F6DFB714EFE93FD5A">Tables 2</tableCitation>
,
<tableCitation id="EB180356F44190016C1472DDFE52FE73" box="[376,391,403,429]" captionStart="TABLE 4" captionStartId="13.[151,244,546,572]" captionTargetPageId="13" captionText="TABLE 4. Main diagnostic characters of the genera of Nematomenia species with radula. (+) presence; (-) absence; (?) unknown." httpUri="http://table.plazi.org/id/F2E56665F44690066DFB716CFEF8FDBF" pageId="10" pageNumber="73" tableUuid="F2E56665F44690066DFB716CFEF8FDBF">4</tableCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="EE806566F44190016DFB7295FD69FDE3" pageId="10" pageNumber="73" type="materials_examined">
<paragraph id="A62536EDF44190016DFB7295FD69FDE3" blockId="10.[151,1437,474,2013]" pageId="10" pageNumber="73">
<emphasis id="94EEEAFFF44190016DFB7295FE91FE2A" bold="true" box="[151,324,474,501]" pageId="10" pageNumber="73">Type material.</emphasis>
<materialsCitation id="16F23CB0F44190016C277295FD69FDE3" ID-GBIF-Occurrence="3041525312" collectionCode="ZSM, SEM" country="Guinea-Bissau" county="Me" elevation="5144" latitude="0.67483336" location="Mol" longLatPrecision="13" longitude="-5.495167" municipality="Basin" pageId="10" pageNumber="73" specimenCode="DIVA 2" specimenCount="1" typeStatus="holotype">
<typeStatus id="7921884FF44190016C277295FE6DFE2B" box="[331,440,475,501]" pageId="10" pageNumber="73" type="holotype">Holotype</typeStatus>
:
<collectionCode id="C08BAE28F44190016CAD7295FE2EFE2B" box="[449,507,475,501]" country="Germany" httpUri="http://grbio.org/cool/4b7r-7sec" name="Bavarian State Collection of Zoology" pageId="10" pageNumber="73" type="Museum">ZSM</collectionCode>
<location id="A3456036F44190016F6D7295FDFAFE2B" LSID="urn:lsid:plazi:treatment:2E3387FBF44190076DFB7221FED9FDBF:A3456036F44190016F6D7295FDFAFE2B" box="[513,559,475,501]" country="Guinea-Bissau" county="Me" latitude="0.67483336" longLatPrecision="13" longitude="-5.495167" municipality="Basin" name="Mol" pageId="10" pageNumber="73">Mol</location>
20171262 (Zoologische Staatssammlung München).
<location id="A3456036F441900169137295FB15FE2B" LSID="urn:lsid:plazi:treatment:2E3387FBF44190076DFB7221FED9FDBF:A3456036F441900169137295FB15FE2B" box="[1151,1216,475,501]" country="Guinea-Bissau" county="Me" latitude="0.67483336" longLatPrecision="13" longitude="-5.495167" municipality="Basin" name="Serial" pageId="10" pageNumber="73">Serial</location>
sections (12 slides) and sclerite preparations (one
<collectionCode id="C08BAE28F44190016C9572B1FDE6FDC7" box="[505,563,511,537]" pageId="10" pageNumber="73">SEM</collectionCode>
stub, five slides).
<collectingCountry id="DE8D767DF44190016E7C72B1FCB4FDC7" box="[784,865,511,537]" name="Guinea-Bissau" pageId="10" pageNumber="73">Guinea</collectingCountry>
<collectingMunicipality id="4641AC97F44190016E0072B1FC7AFDC7" box="[876,943,511,537]" pageId="10" pageNumber="73">Basin</collectingMunicipality>
,
<specimenCode id="F63C9E96F44190016ED272B1FBCDFDC7" box="[958,1048,511,537]" collectionCode="DIVA" pageId="10" pageNumber="73">DIVA 2</specimenCode>
<collectingCounty id="4F444E61F4419001694F72B1FB9DFDC7" box="[1059,1096,511,537]" pageId="10" pageNumber="73">Me</collectingCounty>
63/2, area 4, station 90 (
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,
<geoCoordinate id="C3AE502AF44190016C6E716CFE41FDE3" box="[258,404,546,573]" degrees="05" direction="west" minutes="29.71" orientation="longitude" pageId="10" pageNumber="73" precision="9" value="-5.495167">05º 29.71W</geoCoordinate>
),
<elevation id="2DB7D1DEF44190016CCB716CFD90FDE3" box="[423,581,546,573]" metricMagnitude="3" metricUnit="m" metricValue="5.144" pageId="10" pageNumber="73" unit="m" value="5144.0">
<quantity id="61629B08F44190016CCB716CFE29FDE3" box="[423,508,546,573]" metricMagnitude="3" metricUnit="m" metricValue="5.144" pageId="10" pageNumber="73" unit="m" value="5144.0">5144 m</quantity>
depth
</elevation>
. (
<tableCitation id="EB180356F44190016F3B716DFD7AFDE3" box="[599,687,547,573]" captionStart="TABLE 2" captionStartId="4.[151,239,512,536]" captionTargetPageId="4" captionText="TABLE 2. Examined specimens from DIVA (Latitudinal Gradients of Deep-Sea BioDIVersity in the Atlantic Ocean) expeditions. DIVA 2 (Me 63/2, 2005): Guinea. DIVA 3 (Me 79/1, 2008) Brazil. (A) anterior sections; (P) posterior sections; (S) SEM sclerite stubs; St (Station); (L) light microscopy sclerite preparations; (H) Holotype; (P) Paratype. In bold the new species." httpUri="http://table.plazi.org/id/F2E56665F44F900F6DFB714EFE93FD5A" pageId="10" pageNumber="73" tableUuid="F2E56665F44F900F6DFB714EFE93FD5A">Table 2</tableCitation>
).
</materialsCitation>
</paragraph>
</subSubSection>
<subSubSection id="EE806566F44190016DAB7108FEBBFD5B" pageId="10" pageNumber="73" type="etymology">
<paragraph id="A62536EDF44190016DAB7108FEBBFD5B" blockId="10.[151,1437,474,2013]" pageId="10" pageNumber="73">
<emphasis id="94EEEAFFF44190016DAB7108FE70FDBE" bold="true" box="[199,421,582,608]" pageId="10" pageNumber="73">Derivatio nominis.</emphasis>
<taxonomicName id="619A4D6EF44190016CC17109FE3FFDBF" authorityName="Cobo &amp; Kocot" authorityYear="2021" box="[429,490,583,609]" class="Solenogastres" family="Dondersiidae" genus="Nematomenia" kingdom="Animalia" order="Pholidoskepia" pageId="10" pageNumber="73" phylum="Mollusca" rank="species" species="divae">
<emphasis id="94EEEAFFF44190016CC17109FE3FFDBF" box="[429,490,583,609]" italics="true" pageId="10" pageNumber="73">divae</emphasis>
</taxonomicName>
feminine genitive from DIVA, acronym of the expedition name in which the specimen was collected.
</paragraph>
</subSubSection>
<subSubSection id="EE806566F44190016DAB71C0FE2BFC5F" pageId="10" pageNumber="73" type="diagnosis">
<paragraph id="A62536EDF44190016DAB71C0FE2BFC5F" blockId="10.[151,1437,474,2013]" pageId="10" pageNumber="73">
<emphasis id="94EEEAFFF44190016DAB71C0FE97FD76" bold="true" box="[199,322,654,680]" pageId="10" pageNumber="73">Diagnosis.</emphasis>
Long and narrow body. Slightly scaly appearance. Sclerites as two
<typeStatus id="7921884FF4419001695371C1FBAFFD77" box="[1087,1146,655,681]" pageId="10" pageNumber="73">types</typeStatus>
of leaf-shaped scales and two
<typeStatus id="7921884FF44190016DAB71FDFED7FD13" box="[199,258,691,717]" pageId="10" pageNumber="73">types</typeStatus>
of oar-shaped scales; oar-shaped scales less abundant than leaf-shaped scales. Single pedal fold. Bulky anterior pedal glands. Atrium with long digitiform papillae. Ventrolateral foregut glands of
<typeStatus id="7921884FF4419001691E7199FB77FD2F" box="[1138,1186,727,753]" pageId="10" pageNumber="73">type</typeStatus>
A with short and wide ducts (blister-shaped) with inner musculature and exoepithelial gland cells opening mostly in the anterior region of the ducts. Monoserial radula; teeth with four denticles on a rounded, non-serrated base, neighboring denticles joined at the apex. Midgut without caecum or lateral constrictions. Without dorsoterminal sensory organs. Without accessory copulatory structures.
</paragraph>
</subSubSection>
<subSubSection id="EE806566F44190076DAB70C4FED9FDBF" lastPageId="12" lastPageNumber="75" pageId="10" pageNumber="73" type="description">
<paragraph id="A62536EDF44190016DAB70C4FBF4FC33" blockId="10.[151,1437,474,2013]" pageId="10" pageNumber="73">
<emphasis id="94EEEAFFF44190016DAB70C4FE8CFC7A" bold="true" box="[199,345,906,932]" pageId="10" pageNumber="73">Description.</emphasis>
<emphasis id="94EEEAFFF44190016C0E70C5FE6EFC7B" box="[354,443,907,933]" italics="true" pageId="10" pageNumber="73">Habitus</emphasis>
: Wormlike animal with rounded ends (
<quantity id="61629B08F44190016EEC70C5FC3DFC7B" box="[896,1000,907,933]" metricMagnitude="-3" metricUnit="m" metricValue="3.77" pageId="10" pageNumber="73" unit="mm" value="3.77">3.77 mm</quantity>
long,
<quantity id="61629B08F4419001695870C5FB4EFC7B" box="[1076,1179,907,933]" metricMagnitude="-4" metricUnit="m" metricValue="2.3" pageId="10" pageNumber="73" unit="mm" value="0.23">0.23 mm</quantity>
wide in the mid-body region), narrowing towards the posterior end (
<quantity id="61629B08F44190016FF570E1FCD6FC17" box="[665,771,943,969]" metricMagnitude="-4" metricUnit="m" metricValue="1.3" pageId="10" pageNumber="73" unit="mm" value="0.13">0.13 mm</quantity>
). The pedal groove is externally evident. It is white in 70 % ethanol, with a shiny and scaly appearance, and slightly translucent (
<figureCitation id="3EA12A68F44190016EFB709DFBC1FC33" box="[919,1044,979,1005]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3 A</figureCitation>
).
</paragraph>
<paragraph id="A62536EDF44190016DAB70B9FC94FB37" blockId="10.[151,1437,474,2013]" pageId="10" pageNumber="73">
<emphasis id="94EEEAFFF44190016DAB70B9FEC3FBCF" box="[199,278,1015,1041]" italics="true" pageId="10" pageNumber="73">Mantle</emphasis>
: Mantle formed by a very thin epidermis (1.4 μm) without epidermal papillae. Thin cuticle (8.3 to 15.9 μm thick) with two leaf-shaped and two oar-shaped scale
<typeStatus id="7921884FF44190016E4D7755FCB5FBEB" box="[801,864,1051,1077]" pageId="10" pageNumber="73">types</typeStatus>
: 1) Oblong leaf-shaped scales (
<figureCitation id="3EA12A68F441900169D37755FA8EFBEB" box="[1215,1371,1051,1077]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3 B, C</figureCitation>
) with very straight sides and with a slightly mucronated distal end (45.8 to 77.8 μm long, 26 to 32.3 μm wide); this is the most common
<typeStatus id="7921884FF44190016C2C772DFEA1FBA3" box="[320,372,1123,1149]" pageId="10" pageNumber="73">type</typeStatus>
. 2) Oval leaf-shaped scales (
<figureCitation id="3EA12A68F44190016FD7772DFCEFFBA3" box="[699,826,1123,1149]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3 D</figureCitation>
) that are smaller than the previous
<typeStatus id="7921884FF441900169A2772DFB2BFBA3" box="[1230,1278,1123,1149]" pageId="10" pageNumber="73">type</typeStatus>
(40 to 46 μm long, 18 to 25 μm wide) and with rounded sides and base. 3) Small cuneiform oar-shaped scales (
<figureCitation id="3EA12A68F441900169B377C9FA94FB7F" box="[1247,1345,1159,1185]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3</figureCitation>
; 33.2 to 37.6 μm long, 8 to 8.9 μm wide). 4) Larger and slightly more elliptical oar-shaped scales (
<figureCitation id="3EA12A68F4419001691077E5FB20FB1B" box="[1148,1269,1195,1221]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3 E</figureCitation>
; 55.4 μm long, 9.6 μm wide). Without a distinct
<typeStatus id="7921884FF44190016F657781FDECFB37" box="[521,569,1231,1257]" pageId="10" pageNumber="73">type</typeStatus>
of pedal groove scales.
</paragraph>
<paragraph id="A62536EDF44190016DAB77BDFC47F9F3" blockId="10.[151,1437,474,2013]" pageId="10" pageNumber="73">
<emphasis id="94EEEAFFF44190016DAB77BDFDF3FAD2" box="[199,550,1267,1293]" italics="true" pageId="10" pageNumber="73">Pedal groove and mantle cavity</emphasis>
: Pedal pit (15 μm long, 35.6 μm wide, 20 to 25 μm high) in a very anterior posi-tion (
<figureCitation id="3EA12A68F44190016DBD7659FEE4FAEF" box="[209,305,1303,1329]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3</figureCitation>
G-1). Anterior pedal glands discharge dorsally into the pedal pit through a muscular layer (4 to 6 μm thick). These glands surround the atrium ventrally, run parallel to the anterior region of the foregut, and surround it in its medial region. They continue posteriorly up to the mantle cavity. The inconspicuous pedal groove contains a single fold (9.4 to 11.5 μm wide, 8 to 11.5 μm high) that is well defined in the anterior region but becomes less prominent (almost disappearing) in the mid-posterior region of the body (1 to 2 μm wide and high). The mantle cavity (55 μm long, 35 to 40 μm wide, 60 μm high in the middle region) is almost terminal and decreases in size towards the posterior end (15 to 20 μm in diameter;
<figureCitation id="3EA12A68F44190016F8E76A1FC95F9D7" box="[738,832,1519,1545]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3</figureCitation>
H-6) and has a ventro-anterior pouch (
<figureCitation id="3EA12A68F4419001699976A1FAA1F9D7" box="[1269,1396,1519,1545]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3 H</figureCitation>
; 40 μm long, 10.5 to 12.4 μm wide and high). Without respiratory folds.
</paragraph>
<paragraph id="A62536EDF44190016DAB7579FEDDF893" blockId="10.[151,1437,474,2013]" pageId="10" pageNumber="73">
<emphasis id="94EEEAFFF44190016DAB7579FE56F98E" box="[199,387,1591,1616]" italics="true" pageId="10" pageNumber="73">Digestive system</emphasis>
: The mouth opens at the end of the atrium and continues as a narrow foregut (22.1 μm wide, 37.2 μm high) surrounded by a glandular epithelium and a thin muscular layer (2 to 4 μm;
<figureCitation id="3EA12A68F441900169C17515FAD9F9AB" box="[1197,1292,1627,1653]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3</figureCitation>
G-2). In the middle region, the foregut extends ventrally, and the layer of musculature thickens (longitudinal musculature: 8.2 to 8.5 μm; circular musculature: 20 to 27 μm;
<figureCitation id="3EA12A68F44190016F1B75EDFD01F963" box="[631,724,1699,1725]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3</figureCitation>
G-3). The radular sac extends towards the posterior body region (32 μm long, 25.5 to 28 μm wide and high;
<figureCitation id="3EA12A68F44190016FED7589FD0AF93F" box="[641,735,1735,1761]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3</figureCitation>
G-3). The monoserial radula is formed of about seven rows of single teeth. Each tooth is composed of a broad, non-serrated base (9 to 11 μm long, 2.6 to 3 μm high) bearing four long and narrow denticles (7 to 10 μm high, &lt;1 to 2 μm wide). Neighboring denticles are joined at the apex (
<figureCitation id="3EA12A68F4419001683D7441FF70F893" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3</figureCitation>
G-3, I).
</paragraph>
<paragraph id="A62536EDF44190006DAB7419FCF4FF08" blockId="10.[151,1437,474,2013]" lastBlockId="11.[151,1437,150,321]" lastPageId="11" lastPageNumber="74" pageId="10" pageNumber="73">
The ventrolateral foregut glands are blister-shaped: they consist of two short and wide, simple ducts (34 μm in length, lumen 20 to 30 μm in diameter;
<figureCitation id="3EA12A68F44190016F267435FD72F84B" box="[586,679,1915,1941]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="10" pageNumber="73">Figure 3</figureCitation>
G-3,3), with inner musculature and extraepithelial gland cells (
<typeStatus id="7921884FF441900168067435FA49F84B" box="[1386,1436,1915,1941]" pageId="10" pageNumber="73">type</typeStatus>
A). Most of the gland cells open into the ducts and are restricted to their anterior region. The posterior regions of the ducts are almost free of glandular cells, but no posteriorly bent necks of the glandular cells were observed. Thus, they can be classified as the
<taxonomicName id="619A4D6EF44090006CBD73D9FDA1FF6F" authorityName="Simroth" authorityYear="1893" box="[465,628,151,177]" class="Solenogastres" family="Pruvotinidae" genus="Pararrhopalia" kingdom="Animalia" order="Cavibelonia" pageId="11" pageNumber="74" phylum="Mollusca" rank="genus">
<emphasis id="94EEEAFFF44090006CBD73D9FDA1FF6F" box="[465,628,151,177]" italics="true" pageId="11" pageNumber="74">Pararrhopalia</emphasis>
</taxonomicName>
-
<typeStatus id="7921884FF44090006F1773D9FD78FF6F" box="[635,685,151,177]" pageId="11" pageNumber="74">type</typeStatus>
(
<bibRefCitation id="C20B4B1CF44090006FD773D9FC4AFF6F" author="Handl, C. H. &amp; Todt, C." box="[699,927,150,177]" pageId="11" pageNumber="74" pagination="28 - 42" refId="ref24759" refString="Handl, C. H. &amp; Todt, C. (2005) Foregut glands of Solenogastres (Mollusca): anatomy and revised terminology. Journal of Morphology, 265, 28 - 42. https: // doi. org / 10.1002 / jmor. 10336" type="journal article" year="2005">Handl &amp; Todt, 2005</bibRefCitation>
). The ducts open ventrally into the foregut via a common papilla (i.e. unpaired opening into the foregut).
</paragraph>
<paragraph id="A62536EDF44090006DAB7391FEE0FE9F" blockId="11.[151,1437,150,321]" pageId="11" pageNumber="74">The esophagus (95 μm long, 35 to 40 μm in diameter) forms a sphincter as it joins the midgut centrally. The midgut has no caecum or lateral constrictions. The rectum (10 to 11.25 μm in diameter) discharges dorsally into the mantle cavity.</paragraph>
<caption id="F2E56665F44090006DFB740BFD7CF833" ID-DOI="http://doi.org/10.5281/zenodo.4547994" ID-Zenodo-Dep="4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="11" pageNumber="74" startId="11.[151,250,1861,1885]" targetBox="[164,1423,349,1828]" targetPageId="11">
<paragraph id="A62536EDF44090006DFB740BFD7CF833" blockId="11.[151,1436,1861,2029]" pageId="11" pageNumber="74">
<emphasis id="94EEEAFFF44090006DFB740BFEC1F883" bold="true" box="[151,276,1861,1885]" pageId="11" pageNumber="74">FIGURE 3.</emphasis>
<taxonomicName id="619A4D6EF44090006C707408FE32F883" authority="Cobo &amp; Kocot, 2021" authorityName="Cobo &amp; Kocot" authorityYear="2021" box="[284,487,1861,1885]" class="Solenogastres" family="Dondersiidae" genus="Nematomenia" kingdom="Animalia" order="Pholidoskepia" pageId="11" pageNumber="74" phylum="Mollusca" rank="species" species="divae" status="sp. nov.">
<emphasis id="94EEEAFFF44090006C707408FE32F883" box="[284,487,1861,1885]" italics="true" pageId="11" pageNumber="74">Nematomenia divae</emphasis>
</taxonomicName>
<taxonomicNameLabel id="8FDD5784F44090006C837408FDF2F883" box="[495,551,1862,1885]" pageId="11" pageNumber="74" rank="species">sp. n.</taxonomicNameLabel>
<emphasis id="94EEEAFFF44090006F42740BFD93F883" bold="true" box="[558,582,1861,1885]" pageId="11" pageNumber="74">A.</emphasis>
Habitus. (holotype).
<emphasis id="94EEEAFFF44090006E4E740BFCECF883" bold="true" box="[802,825,1861,1885]" pageId="11" pageNumber="74">B.</emphasis>
Leaf shaped-scales.
<emphasis id="94EEEAFFF4409000697C740BFBFCF883" bold="true" box="[1040,1065,1861,1885]" pageId="11" pageNumber="74">C.</emphasis>
Oblong leaf-shaped scales.
<emphasis id="94EEEAFFF44090006827740BFAB6F883" bold="true" box="[1355,1379,1861,1885]" pageId="11" pageNumber="74">D.</emphasis>
Oval leaf-shaped scales.
<emphasis id="94EEEAFFF44090006C367427FEA4F85F" bold="true" box="[346,369,1897,1921]" pageId="11" pageNumber="74">E.</emphasis>
Elliptical oar-shaped scales.
<emphasis id="94EEEAFFF44090006FF97427FD7DF85F" bold="true" box="[661,680,1897,1921]" pageId="11" pageNumber="74">F.</emphasis>
Cuneiform oar-shaped scales.
<emphasis id="94EEEAFFF44090006EB27427FC2DF85F" bold="true" box="[990,1016,1897,1921]" pageId="11" pageNumber="74">G.</emphasis>
Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype.
<emphasis id="94EEEAFFF44090006FAA74C3FD35F87B" bold="true" box="[710,736,1933,1957]" pageId="11" pageNumber="74">H.</emphasis>
Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype.
<emphasis id="94EEEAFFF44090006EE674FFFC62F817" bold="true" box="[906,951,1969,1993]" pageId="11" pageNumber="74">16.</emphasis>
Serial sections; location in the body is indicated in G and H.
<emphasis id="94EEEAFFF44090006C78749BFEF1F833" bold="true" box="[276,292,2005,2029]" pageId="11" pageNumber="74">I.</emphasis>
Reconstruction of the radula. * radula
</paragraph>
</caption>
<paragraph id="A62536EDF44790076DAB73D9FCCCFEC3" blockId="12.[151,1437,151,609]" pageId="12" pageNumber="75">
<emphasis id="94EEEAFFF44790076DAB73D9FD90FF6E" box="[199,581,151,177]" italics="true" pageId="12" pageNumber="75">Nervous system and sense organs</emphasis>
: Cerebral ganglion of quadrangular shape in cross section (80 μm long, 42 to 83 μm wide, 34 to 50 μm high;
<figureCitation id="3EA12A68F44790076F7973F5FDA6FF0B" box="[533,627,187,213]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="12" pageNumber="75">Figure 3</figureCitation>
G-2). The atrium (86 μm long, 81.5 to 90.2 μm wide, 50 to 75 μm high) opens ventrally (opening is 35 μm wide) and has six to eight large digitiform atrial papillae (18.7 to 22.5 μm long, 12 to 13.5 μm wide;
<figureCitation id="3EA12A68F44790076CEC724DFE0BFEC3" box="[384,478,259,285]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="12" pageNumber="75">Figure 3</figureCitation>
G-1) in its posterior region.
</paragraph>
<paragraph id="A62536EDF44790076DAB7269FED9FDBF" blockId="12.[151,1437,151,609]" pageId="12" pageNumber="75">
<emphasis id="94EEEAFFF44790076DAB7269FE03FE9E" box="[199,470,295,321]" italics="true" pageId="12" pageNumber="75">Gonopericardial system</emphasis>
: The gonads are small (7.5 to 10 μm in diameter), suggesting that it is an immature specimen. The pericardium (approximately 312.5 μm long, 7.5 to 25 μm diameter) is significantly narrow in its posterior region (7.5 μm). The heart runs through the center of the pericardium. The pericardioducts (232.5 μm long, 5 to 7.5 μm diameter) are parallel to the pericardium: they rise laterally in the posterior region of the pericardium and connect to the anterior end of the spawning ducts. The paired region of the spawning ducts is much shorter (&lt;10 μm in length) than the fused part (180 μm in length;
<figureCitation id="3EA12A68F44790076E727295FCAEFE2B" box="[798,891,475,501]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="12" pageNumber="75">Figure 3</figureCitation>
H-4), which narrows to become a muscular duct that is circular in cross-section (75 μm long, 20 to 25 μm in diameter;
<figureCitation id="3EA12A68F44790076EC972B1FBD6FDC7" box="[933,1027,511,537]" captionStart="FIGURE 3" captionStartId="11.[151,250,1861,1885]" captionTargetBox="[164,1423,349,1828]" captionTargetId="figure-90@11.[151,1436,345,1838]" captionTargetPageId="11" captionText="FIGURE 3. Nematomenia divae sp. n. A. Habitus. (holotype). B. Leaf shaped-scales. C. Oblong leaf-shaped scales. D. Oval leaf-shaped scales. E. Elliptical oar-shaped scales. F. Cuneiform oar-shaped scales. G. Anatomical reconstruction of the anterior body based on manual reconstructions of the holotype. H. Anatomical reconstruction of the posterior body based on manual reconstructions and observations of the histological sections of the holotype. 16. Serial sections; location in the body is indicated in G and H. I. Reconstruction of the radula. * radula" figureDoi="http://doi.org/10.5281/zenodo.4547994" httpUri="https://zenodo.org/record/4547994/files/figure.png" pageId="12" pageNumber="75">Figure 3</figureCitation>
H-5) that terminates into the anteroventral pouch of the mantle cavity. Without seminal vesicles, copulatory stylets, or other accessory reproductive structures.
</paragraph>
</subSubSection>
</treatment>
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