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<document id="21813EB38B6268B092E93779F4EAE879" ID-DOI="10.11646/zootaxa.5284.2.2" ID-ISSN="1175-5326" ID-Zenodo-Dep="7923314" ID-ZooBank="834CD5F6-5FF2-46C3-880E-68D2CC7D9261" IM.bibliography_approvedBy="juliana" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="juliana" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="juliana" IM.treatments_approvedBy="juliana" checkinTime="1683786052457" checkinUser="plazi" docAuthor="Garibian, Petr G., Andreeva, Lena V. &amp; Kotov, Alexey A." docDate="2023" docId="86578788CB6CFFFDFF64FF026035F794" docLanguage="en" docName="zootaxa.5284.2.2.pdf" docOrigin="Zootaxa 5284 (2)" docSource="http://dx.doi.org/10.11646/zootaxa.5284.2.2" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Ceriodaphnia nikolaii Garibian &amp; Andreeva &amp; Kotov 2023, sp. nov." docType="treatment" docVersion="3" lastPageNumber="264" masterDocId="7A6EFFF0CB60FFECFFF3FF956474F070" masterDocTitle="A new species of the genus Ceriodaphnia Dana, 1853 (Cladocera: Daphnidae) from Eastern Siberia (Russia) that combines morphological features of two species groups" masterLastPageNumber="270" masterPageNumber="247" pageNumber="259" updateTime="1683909604201" updateUser="juliana" zenodo-license-document="CLOSED">
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<mods:title id="7FA506A663EF3614D64EE3DC6E5F70B6">A new species of the genus Ceriodaphnia Dana, 1853 (Cladocera: Daphnidae) from Eastern Siberia (Russia) that combines morphological features of two species groups</mods:title>
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<mods:namePart id="A5619F4ECFFE748A7EC94F102DBAF56D">Garibian, Petr G.</mods:namePart>
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<mods:affiliation id="2825D9C81B786BB75AE28B31745013D0">A. N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Leninsky Prospect 33, Moscow 119071, Russia petr. garibyan 21 @ mail. ru; https: // orcid. org / 0000 - 0003 - 4505 - 3133</mods:affiliation>
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<mods:namePart id="35A2D6DC70502F5EA3C3A90AC5A6C488">Andreeva, Lena V.</mods:namePart>
<mods:affiliation id="62ABD700A643488F574497701C37ADCC">Institute for Biological Problems of Cryolithozone of the Siberian Branch of Russian Academy of Science, Prospect Lenina 41, Yakutsk 677000, Russia</mods:affiliation>
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<mods:namePart id="2D174DAFF796F8926860004CDFA6A36F">Kotov, Alexey A.</mods:namePart>
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<mods:affiliation id="41070C45B21BA7460C4F3354A2F361AC">A. N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Leninsky Prospect 33, Moscow 119071, Russia petr. garibyan 21 @ mail. ru; https: // orcid. org / 0000 - 0003 - 4505 - 3133</mods:affiliation>
<mods:nameIdentifier id="8431E82FEC9ABAC40E28D6A88960899F" type="email">petr.garibyan21@mail.ru</mods:nameIdentifier>
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<paragraph id="0E41369ECB6CFFE0FF64FF026673F0C1" blockId="12.[151,519,151,213]" box="[151,519,151,178]" pageId="12" pageNumber="259">
<heading id="550981F2CB6CFFE0FF64FF026673F0C1" bold="true" box="[151,519,151,178]" fontSize="11" level="1" pageId="12" pageNumber="259" reason="1">
<emphasis id="3C8AEA8CCB6CFFE0FF64FF026673F0C1" bold="true" box="[151,519,151,178]" pageId="12" pageNumber="259">
<taxonomicName id="C9FE4D1DCB6CFFE0FF64FF0265D6F0C2" authority="Garibian &amp; Andreeva &amp; Kotov, 2023" authorityName="Garibian &amp; Andreeva &amp; Kotov" authorityYear="2023" box="[151,418,151,178]" class="Branchiopoda" family="Daphnidae" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="12" pageNumber="259" phylum="Arthropoda" rank="species" species="nikolaii" status="sp. nov.">
<emphasis id="3C8AEA8CCB6CFFE0FF64FF0265D6F0C2" bold="true" box="[151,418,151,178]" italics="true" pageId="12" pageNumber="259">Ceriodaphnia nikolaii</emphasis>
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<paragraph id="0E41369ECB6CFFE0FF64FF2E6554F0A5" blockId="12.[151,519,151,213]" box="[151,288,187,213]" pageId="12" pageNumber="259">
(
<figureCitation id="96C52A1BCB6CFFE0FF6CFF2E6563F0A5" box="[159,279,187,213]" captionStart-0="FIGURE 9" captionStart-1="FIGURE 10" captionStart-2="FIGURE 11" captionStart-3="FIGURE 12" captionStart-4="FIGURE 13" captionStart-5="FIGURE 14" captionStart-6="FIGURE 15" captionStart-7="FIGURE 16" captionStartId-0="11.[151,250,1334,1358]" captionStartId-1="13.[151,250,1471,1495]" captionStartId-2="14.[151,250,1608,1632]" captionStartId-3="15.[151,250,1590,1614]" captionStartId-4="16.[151,250,1059,1083]" captionStartId-5="17.[151,250,1527,1551]" captionStartId-6="18.[151,250,1813,1837]" captionStartId-7="19.[151,250,1302,1326]" captionTargetBox-0="[153,1434,185,1309]" captionTargetBox-1="[153,1434,206,1445]" captionTargetBox-2="[161,1434,183,1583]" captionTargetBox-3="[153,1433,183,1564]" captionTargetBox-4="[153,1434,183,1033]" captionTargetBox-5="[154,1432,183,1500]" captionTargetBox-6="[153,1434,183,1787]" captionTargetBox-7="[153,1433,183,1276]" captionTargetId-0="figure-17@11.[151,1436,181,1311]" captionTargetId-1="figure-17@13.[151,1436,181,1447]" captionTargetId-2="figure-30@14.[151,1436,181,1585]" captionTargetId-3="figure-17@15.[151,1436,181,1566]" captionTargetId-4="figure-30@16.[151,1436,181,1035]" captionTargetId-5="figure-17@17.[151,1436,181,1503]" captionTargetId-6="figure-30@18.[151,1436,181,1789]" captionTargetId-7="figure-17@19.[151,1436,181,1278]" captionTargetPageId-0="11" captionTargetPageId-1="13" captionTargetPageId-2="14" captionTargetPageId-3="15" captionTargetPageId-4="16" captionTargetPageId-5="17" captionTargetPageId-6="18" captionTargetPageId-7="19" captionText-0="FIGURE 9. Ceriodaphnia nikolaii sp. nov. from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia.A, ephippial female, lateral view. B, C, E, F, adult parthenogenetic female, lateral view. D, juvenile female, lateral view. Scale bars: 1 mm for E, F; 0.1 mm for A, D, F." captionText-1="FIGURE 10. Ceriodaphnia nikolaii sp. nov. from an oxbow of the Lena River near city ofYakutsk, Republic of Sakha (Yakutia), Asian Russia. A, ephippial female, dorsal view. B, E, adult parthenogenetic female, dorsal view. F, G, head, lateral view. H, antenna I. Scale bars 0.1 mm." captionText-2="FIGURE 11. Ceriodaphnia nikolaii sp. nov., adult parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia.A, valves, lateral view; B, F, armature of valves. G, antenna II, lateral view. H, coxopodite of antenna II. I, distal part of antenna II basipodite and first two segments of exopodite. Scale bars 0.1 mm." captionText-3="FIGURE 12. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. AI postabdomen lateral view. Scale bars 0.1 mm." captionText-4="FIGURE 13. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. AH, postabdominal claw. Scale bars 0.1 mm." captionText-5="FIGURE 14. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, limb II. C, limb III. D, limb IV. E, limb V. Scale bars 0.1 mm." captionText-6="FIGURE 15. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, C, limb II. D, limb II gnatobase. E, limb III. F, G, seta 2 of limb III exopodite. H, seta 1 of limb III exopodite. I, anterior portion of limb IV. J, limb V. Scale bars 0.1 mm." captionText-7="FIGURE 16. Ceriodaphnia nikolaii sp. nov., male from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, adult male lateral view. B, juvenile male lateral view. C, adult male head. D, antenna I. E, F, postabdomen. G, H, limb I. I, anterior portion of limb II. Scale bars 0.1 mm." figureDoi-0="http://doi.org/10.5281/zenodo.7923334" figureDoi-1="http://doi.org/10.5281/zenodo.7923338" figureDoi-2="http://doi.org/10.5281/zenodo.7923340" figureDoi-3="http://doi.org/10.5281/zenodo.7923348" figureDoi-4="http://doi.org/10.5281/zenodo.7923350" figureDoi-5="http://doi.org/10.5281/zenodo.7923352" figureDoi-6="http://doi.org/10.5281/zenodo.7923354" figureDoi-7="http://doi.org/10.5281/zenodo.7923356" httpUri-0="https://zenodo.org/record/7923334/files/figure.png" httpUri-1="https://zenodo.org/record/7923338/files/figure.png" httpUri-2="https://zenodo.org/record/7923340/files/figure.png" httpUri-3="https://zenodo.org/record/7923348/files/figure.png" httpUri-4="https://zenodo.org/record/7923350/files/figure.png" httpUri-5="https://zenodo.org/record/7923352/files/figure.png" httpUri-6="https://zenodo.org/record/7923354/files/figure.png" httpUri-7="https://zenodo.org/record/7923356/files/figure.png" pageId="12" pageNumber="259">Figs. 916</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="46E46515CB6CFFE0FF64FE96607AF131" pageId="12" pageNumber="259" type="etymology">
<paragraph id="0E41369ECB6CFFE0FF64FE96607AF131" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF64FE96656AF16D" bold="true" box="[151,286,259,285]" pageId="12" pageNumber="259">Etymology.</emphasis>
The taxon is named after our teacher, Prof. Nikolai N. Smirnov, who initiated great progress in the studies of cladocerans in Eurasia and in the world and collected the
<typeStatus id="D145883CCB6CFFE0FC63FEBD67B4F132" box="[912,960,296,322]" pageId="12" pageNumber="259">type</typeStatus>
series.
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<paragraph id="0E41369ECB6CFFE0FF34FEDE6513F1FA" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF34FEDE651EF115" bold="true" box="[199,362,331,357]" pageId="12" pageNumber="259">Type locality.</emphasis>
An un-named oxbow of the Lena River, City Yakutsk, Republic of
<collectingRegion id="CC3AF87CCB6CFFE0FB78FEDE60BBF115" box="[1163,1231,331,357]" country="Russia" name="Sakha" pageId="12" pageNumber="259">Sakha</collectingRegion>
(Yakutia),
<collectingCountry id="76E9760ECB6CFFE0FAA1FEDE61E9F115" box="[1362,1437,331,357]" name="Russia" pageId="12" pageNumber="259">Russia</collectingCountry>
(62.0˚N, 129.8˚E).
</paragraph>
<paragraph id="0E41369ECB6CFFE0FF34FE06673EF1A1" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF34FE066501F1DD" bold="true" box="[199,373,403,429]" pageId="12" pageNumber="259">Type material.</emphasis>
<materialsCitation id="BE963CC3CB6CFFE0FE88FE06673EF1A1" collectionCode="V" country="Russia" county="University" location="Ml" municipality="Lomonosov" pageId="12" pageNumber="259" specimenCount="1" stateProvince="Moscow" typeStatus="holotype">
<emphasis id="3C8AEA8CCB6CFFE0FE88FE06659BF1DD" bold="true" box="[379,495,403,429]" pageId="12" pageNumber="259">
<typeStatus id="D145883CCB6CFFE0FE88FE06659EF1DD" box="[379,490,403,429]" pageId="12" pageNumber="259">Holotype</typeStatus>
.
</emphasis>
A parthenogenetic female, MGU
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266 at the
<location id="0B216045CB6CFFE0FBF0FE06610AF1DE" LSID="urn:lsid:plazi:treatment:86578788CB6CFFFDFF64FF026035F794:0B216045CB6CFFE0FBF0FE06610AF1DE" box="[1027,1406,403,430]" country="Russia" county="University" municipality="Lomonosov" name="Collection of Zoological Museum" pageId="12" pageNumber="259" stateProvince="Moscow">Collection of Zoological Museum</location>
of M.
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.
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Moscow State
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,
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,
<collectingCountry id="76E9760ECB6CFFE0FD0BFE226732F1A1" box="[760,838,439,465]" name="Russia" pageId="12" pageNumber="259">Russia</collectingCountry>
.
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</paragraph>
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<emphasis id="3C8AEA8CCB6CFFE0FF34FE4E6547F185" bold="true" box="[199,307,475,501]" pageId="12" pageNumber="259">
<typeStatus id="D145883CCB6CFFE0FF34FE4E655AF185" box="[199,302,475,501]" pageId="12" pageNumber="259">Allotype</typeStatus>
.
</emphasis>
An adult male, MGU Ml 267.
</paragraph>
<paragraph id="0E41369ECB6CFFE0FF34FE6A672DF24E" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF34FE6A6532F269" bold="true" box="[199,326,511,537]" pageId="12" pageNumber="259">
<typeStatus id="D145883CCB6CFFE0FF34FE6A6535F269" box="[199,321,511,537]" pageId="12" pageNumber="259">Paratypes</typeStatus>
.
</emphasis>
Ten parthenogenetic females, six ephippial female and
<specimenCount id="18F8FD17CB6CFFE0FC31FD956036F269" box="[962,1090,511,538]" pageId="12" pageNumber="259" type="adult">seven adult</specimenCount>
males, MGU Ml 268. Several parthenogenetic, ephippial females and males, AAK 1999-045.
</paragraph>
<paragraph id="0E41369ECB6CFFE0FF34FDD2665EF281" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF34FDD26644F211" bold="true" box="[199,560,583,609]" pageId="12" pageNumber="259">Adult parthenogenetic female.</emphasis>
<emphasis id="3C8AEA8CCB6CFFE0FDC4FDD266E7F211" box="[567,659,583,609]" italics="true" pageId="12" pageNumber="259">General</emphasis>
(
<figureCitation id="96C52A1BCB6CFFE0FD52FDD26743F211" box="[673,823,583,609]" captionStart="FIGURE 9" captionStartId="11.[151,250,1334,1358]" captionTargetBox="[153,1434,185,1309]" captionTargetId="figure-17@11.[151,1436,181,1311]" captionTargetPageId="11" captionText="FIGURE 9. Ceriodaphnia nikolaii sp. nov. from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia.A, ephippial female, lateral view. B, C, E, F, adult parthenogenetic female, lateral view. D, juvenile female, lateral view. Scale bars: 1 mm for E, F; 0.1 mm for A, D, F." figureDoi="http://doi.org/10.5281/zenodo.7923334" httpUri="https://zenodo.org/record/7923334/files/figure.png" pageId="12" pageNumber="259">Figs. 9b,c,e,f</figureCitation>
). Body subovoid in lateral view, with maximum height in middle of valves. Dorsal margin interrupted by a depression in posterior head portion. Dorsal and ventral portion ovoid, poster-dorsal angle present, with small caudal spine. Postero-dorsal angle well-developed, sometimes represented by a short caudal spine, valve margin from the former to anterior margin uniformly rounded. In dorsal view, body subovoid and elongated.
</paragraph>
<paragraph id="0E41369ECB6CFFE0FF34FD6E677AF3F1" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF34FD6E6570F365" box="[199,260,763,789]" italics="true" pageId="12" pageNumber="259">Head</emphasis>
(
<figureCitation id="96C52A1BCB6CFFE0FEE0FD6E65ECF365" box="[275,408,763,789]" captionStart="FIGURE 10" captionStartId="13.[151,250,1471,1495]" captionTargetBox="[153,1434,206,1445]" captionTargetId="figure-17@13.[151,1436,181,1447]" captionTargetPageId="13" captionText="FIGURE 10. Ceriodaphnia nikolaii sp. nov. from an oxbow of the Lena River near city ofYakutsk, Republic of Sakha (Yakutia), Asian Russia. A, ephippial female, dorsal view. B, E, adult parthenogenetic female, dorsal view. F, G, head, lateral view. H, antenna I. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923338" httpUri="https://zenodo.org/record/7923338/files/figure.png" pageId="12" pageNumber="259">Figs. 10ag</figureCitation>
) small, ovoid, without rostrum, with a strong depression in posterior head half; small dorsal head pore in this depression. Dorsal head pore round; supraocular dome surround relatively big compound eye; ocellus minute. Labrum (
<figureCitation id="96C52A1BCB6CFFE0FE47FCD66660F32D" box="[436,532,835,861]" captionStart="FIGURE 10" captionStartId="13.[151,250,1471,1495]" captionTargetBox="[153,1434,206,1445]" captionTargetId="figure-17@13.[151,1436,181,1447]" captionTargetPageId="13" captionText="FIGURE 10. Ceriodaphnia nikolaii sp. nov. from an oxbow of the Lena River near city ofYakutsk, Republic of Sakha (Yakutia), Asian Russia. A, ephippial female, dorsal view. B, E, adult parthenogenetic female, dorsal view. F, G, head, lateral view. H, antenna I. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923338" httpUri="https://zenodo.org/record/7923338/files/figure.png" pageId="12" pageNumber="259">
Fig.
<quantity id="C9069B7BCB6CFFE0FE1AFCD66660F32D" box="[489,532,835,861]" metricMagnitude="-2" metricUnit="kg" metricValue="1.0" pageId="12" pageNumber="259" unit="g" value="10.0">10g</quantity>
</figureCitation>
) quadrangular, with a wide fleshy main body and large setulated labral plate. In dorsal view, fornices from rounded to slightly projected.
</paragraph>
<paragraph id="0E41369ECB6CFFE0FF34FC1E6656F39D" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF34FC1E6570F3D5" box="[199,260,907,933]" italics="true" pageId="12" pageNumber="259">Valve</emphasis>
large and ovoid (
<figureCitation id="96C52A1BCB6CFFE0FE27FC1E662DF3D5" box="[468,601,907,933]" captionStart="FIGURE 11" captionStartId="14.[151,250,1608,1632]" captionTargetBox="[161,1434,183,1583]" captionTargetId="figure-30@14.[151,1436,181,1585]" captionTargetPageId="14" captionText="FIGURE 11. Ceriodaphnia nikolaii sp. nov., adult parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia.A, valves, lateral view; B, F, armature of valves. G, antenna II, lateral view. H, coxopodite of antenna II. I, distal part of antenna II basipodite and first two segments of exopodite. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923340" httpUri="https://zenodo.org/record/7923340/files/figure.png" pageId="12" pageNumber="259">Figs. 11af</figureCitation>
); ventral portion with long setae at inner margin (
<figureCitation id="96C52A1BCB6CFFE0FB53FC1E615DF3D5" box="[1184,1321,907,933]" captionStart="FIGURE 11" captionStartId="14.[151,250,1608,1632]" captionTargetBox="[161,1434,183,1583]" captionTargetId="figure-30@14.[151,1436,181,1585]" captionTargetPageId="14" captionText="FIGURE 11. Ceriodaphnia nikolaii sp. nov., adult parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia.A, valves, lateral view; B, F, armature of valves. G, antenna II, lateral view. H, coxopodite of antenna II. I, distal part of antenna II basipodite and first two segments of exopodite. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923340" httpUri="https://zenodo.org/record/7923340/files/figure.png" pageId="12" pageNumber="259">Figs. 11ab</figureCitation>
); postero-ventral portion with a row of short setae, short series of setules between them (
<figureCitation id="96C52A1BCB6CFFE0FBE1FC3A6006F3B9" box="[1042,1138,943,969]" captionStart="FIGURE 11" captionStartId="14.[151,250,1608,1632]" captionTargetBox="[161,1434,183,1583]" captionTargetId="figure-30@14.[151,1436,181,1585]" captionTargetPageId="14" captionText="FIGURE 11. Ceriodaphnia nikolaii sp. nov., adult parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia.A, valves, lateral view; B, F, armature of valves. G, antenna II, lateral view. H, coxopodite of antenna II. I, distal part of antenna II basipodite and first two segments of exopodite. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923340" httpUri="https://zenodo.org/record/7923340/files/figure.png" pageId="12" pageNumber="259">Fig. 11c</figureCitation>
); two relatively long setae in dorsal most portion (
<figureCitation id="96C52A1BCB6CFFE0FE6EFC466662F39D" box="[413,534,979,1005]" captionStart="FIGURE 11" captionStartId="14.[151,250,1608,1632]" captionTargetBox="[161,1434,183,1583]" captionTargetId="figure-30@14.[151,1436,181,1585]" captionTargetPageId="14" captionText="FIGURE 11. Ceriodaphnia nikolaii sp. nov., adult parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia.A, valves, lateral view; B, F, armature of valves. G, antenna II, lateral view. H, coxopodite of antenna II. I, distal part of antenna II basipodite and first two segments of exopodite. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923340" httpUri="https://zenodo.org/record/7923340/files/figure.png" pageId="12" pageNumber="259">Fig. 11df</figureCitation>
).
</paragraph>
<paragraph id="0E41369ECB6CFFE0FF34FC6261E8F461" blockId="12.[151,1437,259,1942]" box="[199,1436,1015,1042]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF34FC626545F461" box="[199,305,1015,1041]" italics="true" pageId="12" pageNumber="259">Abdomen</emphasis>
(
<figureCitation id="96C52A1BCB6CFFE0FEB3FC6265A8F461" box="[320,476,1015,1041]" captionStart="FIGURE 12" captionStartId="15.[151,250,1590,1614]" captionTargetBox="[153,1433,183,1564]" captionTargetId="figure-17@15.[151,1436,181,1566]" captionTargetPageId="15" captionText="FIGURE 12. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. AI postabdomen lateral view. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923348" httpUri="https://zenodo.org/record/7923348/files/figure.png" pageId="12" pageNumber="259">Figs. 12b, h, i</figureCitation>
) short consisting of four segments, first segment having a long abdominal projection.
</paragraph>
<paragraph id="0E41369ECB6CFFE0FF3CFB8E6540F4D1" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF3CFB8E6513F445" box="[207,359,1051,1077]" italics="true" pageId="12" pageNumber="259">Postabdomen</emphasis>
(
<figureCitation id="96C52A1BCB6CFFE0FE84FB8E6583F445" box="[375,503,1051,1077]" captionStart="FIGURE 12" captionStartId="15.[151,250,1590,1614]" captionTargetBox="[153,1433,183,1564]" captionTargetId="figure-17@15.[151,1436,181,1566]" captionTargetPageId="15" captionText="FIGURE 12. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. AI postabdomen lateral view. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923348" httpUri="https://zenodo.org/record/7923348/files/figure.png" pageId="12" pageNumber="259">Figs. 12ai</figureCitation>
) elongated, tapering distally. Ventral portion straight. Preanal margin from slightly to strongly projected and angled, postanal angle rounded. Postanal and anal margin bearing 89 teeths of different size. Preanal, anal and postanal portion covered by short series of minute setules. Postabdominal seta as long as postabdomen.
</paragraph>
<paragraph id="0E41369ECB6CFFE0FF34FB3E60AAF57D" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF34FB3E65C4F4B5" box="[199,432,1195,1221]" italics="true" pageId="12" pageNumber="259">Postabdominal claw</emphasis>
elongated, curved, with pointed tip (
<figureCitation id="96C52A1BCB6CFFE0FCAEFB3E679CF4B5" box="[861,1000,1195,1221]" captionStart="FIGURE 13" captionStartId="16.[151,250,1059,1083]" captionTargetBox="[153,1434,183,1033]" captionTargetId="figure-30@16.[151,1436,181,1035]" captionTargetPageId="16" captionText="FIGURE 13. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. AH, postabdominal claw. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923350" httpUri="https://zenodo.org/record/7923350/files/figure.png" pageId="12" pageNumber="259">Figs. 13ah</figureCitation>
). Outer portion of dorsal margin with three successive pectens. First pecten with thin setules, second pecten consisting of twelve to twenty six stout teeth with variable size, and third pecten bearing numerous minute setules, not reaching the tip of claw.
</paragraph>
<paragraph id="0E41369ECB6CFFE0FF34FA8265D8F525" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF34FA826541F541" box="[199,309,1303,1329]" italics="true" pageId="12" pageNumber="259">Antenna I</emphasis>
(
<figureCitation id="96C52A1BCB6CFFE0FEB6FA8265B1F541" box="[325,453,1303,1329]" captionStart="FIGURE 10" captionStartId="13.[151,250,1471,1495]" captionTargetBox="[153,1434,206,1445]" captionTargetId="figure-17@13.[151,1436,181,1447]" captionTargetPageId="13" captionText="FIGURE 10. Ceriodaphnia nikolaii sp. nov. from an oxbow of the Lena River near city ofYakutsk, Republic of Sakha (Yakutia), Asian Russia. A, ephippial female, dorsal view. B, E, adult parthenogenetic female, dorsal view. F, G, head, lateral view. H, antenna I. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923338" httpUri="https://zenodo.org/record/7923338/files/figure.png" pageId="12" pageNumber="259">
Figs.
<quantity id="C9069B7BCB6CFFE0FE76FA8265C5F541" box="[389,433,1303,1329]" metricMagnitude="-2" metricUnit="kg" metricValue="1.0" pageId="12" pageNumber="259" unit="g" value="10.0">10g</quantity>
,h
</figureCitation>
) short and cylindrical. Antennular seta longer than antenna I body, mostly same in size with longest aesthetascs.
</paragraph>
<paragraph id="0E41369ECB6CFFE0FF34FACA610EF595" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF34FACA6536F509" box="[199,322,1375,1401]" italics="true" pageId="12" pageNumber="259">Antenna II</emphasis>
(
<figureCitation id="96C52A1BCB6CFFE0FEA6FACA65ACF509" box="[341,472,1375,1401]" captionStart="FIGURE 11" captionStartId="14.[151,250,1608,1632]" captionTargetBox="[161,1434,183,1583]" captionTargetId="figure-30@14.[151,1436,181,1585]" captionTargetPageId="14" captionText="FIGURE 11. Ceriodaphnia nikolaii sp. nov., adult parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia.A, valves, lateral view; B, F, armature of valves. G, antenna II, lateral view. H, coxopodite of antenna II. I, distal part of antenna II basipodite and first two segments of exopodite. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923340" httpUri="https://zenodo.org/record/7923340/files/figure.png" pageId="12" pageNumber="259">
Figs.
<quantity id="C9069B7BCB6CFFE0FE6BFACA65B4F509" box="[408,448,1375,1401]" metricMagnitude="-2" metricUnit="kg" metricValue="1.1" pageId="12" pageNumber="259" unit="g" value="11.0">11g</quantity>
i
</figureCitation>
) with a narrow coxal part bearing two sensory setae. Basal segment of antenna II cylindrical elongated and covered by rows of small setules. Antennular branches long, approximately same in size, exopodite with four setulated segments, endopodite consist of three setulated segments. Antennal formula: 0-0-1- 3/1-1-3, second segment of exopodite bearing one short spine, distal part of basal segment with one short spine.
</paragraph>
<paragraph id="0E41369ECB6CFFE0FF34FA7A616CF6E9" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF34FA7A6566F679" box="[199,274,1519,1545]" italics="true" pageId="12" pageNumber="259">Limb I</emphasis>
(
<figureCitation id="96C52A1BCB6CFFE0FED0FA7A65FFF679" box="[291,395,1519,1545]" captionStart="FIGURE 14" captionStartId="17.[151,250,1527,1551]" captionTargetBox="[154,1432,183,1500]" captionTargetId="figure-17@17.[151,1436,181,1503]" captionTargetPageId="17" captionText="FIGURE 14. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, limb II. C, limb III. D, limb IV. E, limb V. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923352" httpUri="https://zenodo.org/record/7923352/files/figure.png" pageId="12" pageNumber="259">Figs. 14a</figureCitation>
and
<figureCitation id="96C52A1BCB6CFFE0FE37FA7A659AF67A" box="[452,494,1519,1546]" captionStart="FIGURE 15" captionStartId="18.[151,250,1813,1837]" captionTargetBox="[153,1434,183,1787]" captionTargetId="figure-30@18.[151,1436,181,1789]" captionTargetPageId="18" captionText="FIGURE 15. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, C, limb II. D, limb II gnatobase. E, limb III. F, G, seta 2 of limb III exopodite. H, seta 1 of limb III exopodite. I, anterior portion of limb IV. J, limb V. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923354" httpUri="https://zenodo.org/record/7923354/files/figure.png" pageId="12" pageNumber="259">15a</figureCitation>
) with a bilaterally setulated accessory seta. Outer distal lobe (
<collectionCode id="68EFAE5BCB6CFFE0FB5EFA7A609EF679" box="[1197,1258,1519,1545]" pageId="12" pageNumber="259">ODL</collectionCode>
) bearing a very long, naked seta and a short seta setulated in distal part. Inner distal portion (endite 4) with a single anterior and two posterior setae of different size. Endite 3 with a single, long anterior seta (1) and two posterior setae (ab); endite 2 with a single anterior seta (2) and two posterior setae (cd); endite 1 with a single, short anterior seta (3) and four posterior setae (fh). Two ejectors hooks subequal in size (
<figureCitation id="96C52A1BCB6CFFE0FCDAF9EA67E4F6E9" box="[809,912,1663,1689]" captionStart="FIGURE 14" captionStartId="17.[151,250,1527,1551]" captionTargetBox="[154,1432,183,1500]" captionTargetId="figure-17@17.[151,1436,181,1503]" captionTargetPageId="17" captionText="FIGURE 14. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, limb II. C, limb III. D, limb IV. E, limb V. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923352" httpUri="https://zenodo.org/record/7923352/files/figure.png" pageId="12" pageNumber="259">Figs. 14a</figureCitation>
and
<figureCitation id="96C52A1BCB6CFFE0FC34F9EA6786F6EA" box="[967,1010,1663,1690]" captionStart="FIGURE 15" captionStartId="18.[151,250,1813,1837]" captionTargetBox="[153,1434,183,1787]" captionTargetId="figure-30@18.[151,1436,181,1789]" captionTargetPageId="18" captionText="FIGURE 15. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, C, limb II. D, limb II gnatobase. E, limb III. F, G, seta 2 of limb III exopodite. H, seta 1 of limb III exopodite. I, anterior portion of limb IV. J, limb V. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923354" httpUri="https://zenodo.org/record/7923354/files/figure.png" pageId="12" pageNumber="259">15a</figureCitation>
). Maxillar process absent.
</paragraph>
<paragraph id="0E41369ECB6CFFE0FF34F9366157F7E5" blockId="12.[151,1437,259,1942]" pageId="12" pageNumber="259">
<emphasis id="3C8AEA8CCB6CFFE0FF34F9366569F6CD" box="[199,285,1699,1725]" italics="true" pageId="12" pageNumber="259">Limb II</emphasis>
(
<figureCitation id="96C52A1BCB6CFFE0FEDDF93665EEF6CD" box="[302,410,1699,1725]" captionStart="FIGURE 14" captionStartId="17.[151,250,1527,1551]" captionTargetBox="[154,1432,183,1500]" captionTargetId="figure-17@17.[151,1436,181,1503]" captionTargetPageId="17" captionText="FIGURE 14. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, limb II. C, limb III. D, limb IV. E, limb V. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923352" httpUri="https://zenodo.org/record/7923352/files/figure.png" pageId="12" pageNumber="259">Figs. 14b</figureCitation>
and
<figureCitation id="96C52A1BCB6CFFE0FE26F9366668F6CE" box="[469,540,1699,1726]" captionStart="FIGURE 15" captionStartId="18.[151,250,1813,1837]" captionTargetBox="[153,1434,183,1787]" captionTargetId="figure-30@18.[151,1436,181,1789]" captionTargetPageId="18" captionText="FIGURE 15. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, C, limb II. D, limb II gnatobase. E, limb III. F, G, seta 2 of limb III exopodite. H, seta 1 of limb III exopodite. I, anterior portion of limb IV. J, limb V. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923354" httpUri="https://zenodo.org/record/7923354/files/figure.png" pageId="12" pageNumber="259">15bd</figureCitation>
) with an ovoid epipodite (epp) an elongated exopodite (ext) bearing two long bilaterally setulated setae. Endite 5 with a short anterior seta (1) and two long, bilaterally setulated posterior setae (ab); endite 4 with a single long (longest one) stiff anterior setae (2) and a long posterior seta (c); endite 3 with a single short anterior seta (3) and no posterior setae; endite 2 with a short anterior seta modified into sensillum (4) and a single posterior seta (d). A seta on unclear homology near gnathobase. Endite 1(e1) = gnathobase with two rows of setae. Anterior row consists of four setae: setae 1 presented by a small sensillum; seta 2 very long and setulated; seta 3 shorter than seta 2; seta 4 short. Posterior row with eight setae of different morphology.
</paragraph>
<caption id="5A816616CB6DFFE1FF64FA2A65B0F66F" ID-DOI="http://doi.org/10.5281/zenodo.7923338" ID-Zenodo-Dep="7923338" httpUri="https://zenodo.org/record/7923338/files/figure.png" pageId="13" pageNumber="260" startId="13.[151,250,1471,1495]" targetBox="[153,1434,206,1445]" targetPageId="13" targetType="figure">
<paragraph id="0E41369ECB6DFFE1FF64FA2A65B0F66F" blockId="13.[151,1436,1471,1567]" pageId="13" pageNumber="260">
<emphasis id="3C8AEA8CCB6DFFE1FF64FA2A656AF5A7" bold="true" box="[151,286,1471,1495]" pageId="13" pageNumber="260">FIGURE 10.</emphasis>
<taxonomicName id="C9FE4D1DCB6DFFE1FED1FA2A6674F5A7" authority="Garibian &amp; Andreeva &amp; Kotov, 2023" authorityName="Garibian &amp; Andreeva &amp; Kotov" authorityYear="2023" box="[290,512,1471,1495]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="13" pageNumber="260" phylum="Arthropoda" rank="species" species="nikolaii" status="sp. nov.">
<emphasis id="3C8AEA8CCB6DFFE1FED1FA2A6674F5A7" box="[290,512,1471,1495]" italics="true" pageId="13" pageNumber="260">Ceriodaphnia nikolaii</emphasis>
</taxonomicName>
<taxonomicNameLabel id="27B957F7CB6DFFE1FDF6FA2A6621F5A7" box="[517,597,1471,1495]" pageId="13" pageNumber="260" rank="species">
<emphasis id="3C8AEA8CCB6DFFE1FDF6FA2A663BF5A7" bold="true" box="[517,591,1471,1495]" pageId="13" pageNumber="260">sp. nov</emphasis>
.
</taxonomicNameLabel>
from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, ephippial female, dorsal view. B, E, adult parthenogenetic female, dorsal view. F, G, head, lateral view. H, antenna I. Scale bars 0.1 mm.
</paragraph>
</caption>
<paragraph id="0E41369ECB6DFFE1FF34F9E4600CF730" blockId="13.[151,1437,1649,1964]" pageId="13" pageNumber="260">
<emphasis id="3C8AEA8CCB6DFFE1FF34F9E46552F6FB" box="[199,294,1649,1675]" italics="true" pageId="13" pageNumber="260">Limb III</emphasis>
(
<figureCitation id="96C52A1BCB6DFFE1FECBF9E465D7F6FC" box="[312,419,1649,1676]" captionStart="FIGURE 14" captionStartId="17.[151,250,1527,1551]" captionTargetBox="[154,1432,183,1500]" captionTargetId="figure-17@17.[151,1436,181,1503]" captionTargetPageId="17" captionText="FIGURE 14. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, limb II. C, limb III. D, limb IV. E, limb V. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923352" httpUri="https://zenodo.org/record/7923352/files/figure.png" pageId="13" pageNumber="260">Figs. 14c</figureCitation>
and
<figureCitation id="96C52A1BCB6DFFE1FE2DF9E46650F6FC" box="[478,548,1649,1676]" captionStart="FIGURE 15" captionStartId="18.[151,250,1813,1837]" captionTargetBox="[153,1434,183,1787]" captionTargetId="figure-30@18.[151,1436,181,1789]" captionTargetPageId="18" captionText="FIGURE 15. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, C, limb II. D, limb II gnatobase. E, limb III. F, G, seta 2 of limb III exopodite. H, seta 1 of limb III exopodite. I, anterior portion of limb IV. J, limb V. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923354" httpUri="https://zenodo.org/record/7923354/files/figure.png" pageId="13" pageNumber="260">15eh</figureCitation>
) with a subovoid and elongated prepipodite (pep) and ovoid epipodite (epp). Exopodite (ext) with two lateral (56) and four distal setae (14); distal segment of seta 1 and seta 2 thin, proximal part of seta 2 with a row of strong setules. Limb inner distal portion represented by five endites: endite 4 with a single anterior (2) and a single posterior (b) seta; endite 3 with a short anterior seta (3); endite 2 with a very short anterior seta (4); endite 1 (gnathobases) represented by a large lobe with a long distal anterior seta (1) and two small, stiff anterior setae (23), posterior portion represented by numerous long posterior setae.
</paragraph>
<paragraph id="0E41369ECB6DFFE1FF34F8DC6033F7DC" blockId="13.[151,1437,1649,1964]" pageId="13" pageNumber="260">
<emphasis id="3C8AEA8CCB6DFFE1FF34F8DC6550F713" box="[199,292,1865,1891]" italics="true" pageId="13" pageNumber="260">Limb IV</emphasis>
(
<figureCitation id="96C52A1BCB6DFFE1FEC5F8DC65D6F713" box="[310,418,1865,1891]" captionStart="FIGURE 14" captionStartId="17.[151,250,1527,1551]" captionTargetBox="[154,1432,183,1500]" captionTargetId="figure-17@17.[151,1436,181,1503]" captionTargetPageId="17" captionText="FIGURE 14. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, limb II. C, limb III. D, limb IV. E, limb V. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923352" httpUri="https://zenodo.org/record/7923352/files/figure.png" pageId="13" pageNumber="260">Figs. 14d</figureCitation>
and
<figureCitation id="96C52A1BCB6DFFE1FE2FF8DC6674F714" box="[476,512,1865,1892]" captionStart="FIGURE 15" captionStartId="18.[151,250,1813,1837]" captionTargetBox="[153,1434,183,1787]" captionTargetId="figure-30@18.[151,1436,181,1789]" captionTargetPageId="18" captionText="FIGURE 15. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, C, limb II. D, limb II gnatobase. E, limb III. F, G, seta 2 of limb III exopodite. H, seta 1 of limb III exopodite. I, anterior portion of limb IV. J, limb V. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923354" httpUri="https://zenodo.org/record/7923354/files/figure.png" pageId="13" pageNumber="260">15i</figureCitation>
) with an elongated prepipodite (pep) and ovoid epipodite (epp). Exopodite (ext) bears two lateral setae (56) and four distal setae (14); distal segment of seta 1 thin. Inner limb portion with two setulated anterior setae (12); posterior portion bears numerous long posterior setae.
</paragraph>
<caption id="5A816616CB6EFFE2FF64F9DD611FF6D8" ID-DOI="http://doi.org/10.5281/zenodo.7923340" ID-Zenodo-Dep="7923340" httpUri="https://zenodo.org/record/7923340/files/figure.png" pageId="14" pageNumber="261" startId="14.[151,250,1608,1632]" targetBox="[161,1434,183,1583]" targetPageId="14" targetType="figure">
<paragraph id="0E41369ECB6EFFE2FF64F9DD611FF6D8" blockId="14.[151,1437,1608,1705]" pageId="14" pageNumber="261">
<emphasis id="3C8AEA8CCB6EFFE2FF64F9DD6556F610" bold="true" box="[151,290,1608,1632]" pageId="14" pageNumber="261">FIGURE 11.</emphasis>
<taxonomicName id="C9FE4D1DCB6EFFE2FED8F9DC667AF611" authority="Garibian &amp; Andreeva &amp; Kotov, 2023" authorityName="Garibian &amp; Andreeva &amp; Kotov" authorityYear="2023" box="[299,526,1609,1633]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="14" pageNumber="261" phylum="Arthropoda" rank="species" species="nikolaii" status="sp. nov.">
<emphasis id="3C8AEA8CCB6EFFE2FED8F9DC667AF611" box="[299,526,1609,1633]" italics="true" pageId="14" pageNumber="261">Ceriodaphnia nikolaii</emphasis>
</taxonomicName>
<emphasis id="3C8AEA8CCB6EFFE2FDEBF9DC6618F611" bold="true" box="[536,620,1609,1633]" pageId="14" pageNumber="261">
<taxonomicNameLabel id="27B957F7CB6EFFE2FDEBF9DC6618F611" box="[536,620,1609,1633]" pageId="14" pageNumber="261" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, adult parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, valves, lateral view; B, F, armature of valves. G, antenna II, lateral view. H, coxopodite of antenna II. I, distal part of antenna II basipodite and first two segments of exopodite. Scale bars 0.1 mm.
</paragraph>
</caption>
<paragraph id="0E41369ECB6EFFE2FF34F96E61EFF749" blockId="14.[151,1436,1787,1957]" pageId="14" pageNumber="261">
<emphasis id="3C8AEA8CCB6EFFE2FF34F96E656DF765" box="[199,281,1787,1813]" italics="true" pageId="14" pageNumber="261">
Limb
<collectionCode id="68EFAE5BCB6EFFE2FEFBF969656DF765" box="[264,281,1788,1813]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="14" pageNumber="261" type="Museum">V</collectionCode>
</emphasis>
(
<figureCitation id="96C52A1BCB6EFFE2FED9F96E65E6F765" box="[298,402,1787,1813]" captionStart="FIGURE 14" captionStartId="17.[151,250,1527,1551]" captionTargetBox="[154,1432,183,1500]" captionTargetId="figure-17@17.[151,1436,181,1503]" captionTargetPageId="17" captionText="FIGURE 14. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, limb II. C, limb III. D, limb IV. E, limb V. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923352" httpUri="https://zenodo.org/record/7923352/files/figure.png" pageId="14" pageNumber="261">Figs. 14e</figureCitation>
and
<figureCitation id="96C52A1BCB6EFFE2FE38F96E659BF766" box="[459,495,1787,1814]" captionStart="FIGURE 15" captionStartId="18.[151,250,1813,1837]" captionTargetBox="[153,1434,183,1787]" captionTargetId="figure-30@18.[151,1436,181,1789]" captionTargetPageId="18" captionText="FIGURE 15. Ceriodaphnia nikolaii sp. nov., parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, C, limb II. D, limb II gnatobase. E, limb III. F, G, seta 2 of limb III exopodite. H, seta 1 of limb III exopodite. I, anterior portion of limb IV. J, limb V. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923354" httpUri="https://zenodo.org/record/7923354/files/figure.png" pageId="14" pageNumber="261">15j</figureCitation>
) with elongated epipodite (epp), exopodite (exp) triangular, with two distal setae of different size (12) and a large lateral seta (3). Inner portion of limb
<collectionCode id="68EFAE5BCB6EFFE2FC75F88A67EDF749" box="[902,921,1823,1849]" country="Canada" lsid="urn:lsid:biocol.org:col:13946" name="Royal British Columbia Museum - Herbarium" pageId="14" pageNumber="261" type="Museum">V</collectionCode>
with a setulated margin and a large distal seta.
</paragraph>
<paragraph id="0E41369ECB6EFFE2FF34F8D6604BF7D5" blockId="14.[151,1436,1787,1957]" pageId="14" pageNumber="261">
<emphasis id="3C8AEA8CCB6EFFE2FF34F8D6658EF72C" bold="true" box="[199,506,1858,1885]" pageId="14" pageNumber="261">
Juvenile female (
<figureCitation id="96C52A1BCB6EFFE2FE67F8D76598F72C" box="[404,492,1858,1884]" captionStart="FIGURE 9" captionStartId="11.[151,250,1334,1358]" captionTargetBox="[153,1434,185,1309]" captionTargetId="figure-17@11.[151,1436,181,1311]" captionTargetPageId="11" captionText="FIGURE 9. Ceriodaphnia nikolaii sp. nov. from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia.A, ephippial female, lateral view. B, C, E, F, adult parthenogenetic female, lateral view. D, juvenile female, lateral view. Scale bars: 1 mm for E, F; 0.1 mm for A, D, F." figureDoi="http://doi.org/10.5281/zenodo.7923334" httpUri="https://zenodo.org/record/7923334/files/figure.png" pageId="14" pageNumber="261">Fig. 9d</figureCitation>
).
</emphasis>
Body subovoid and elongated; dorsal margin slightly convex; postero-dorsal and ventral portion round. Head round, with large compound eye and small ocellus. Dorsal portion with great depression between head and body; dorsal part of headshield with protruding dorsal head pore.
</paragraph>
<caption id="5A816616CB6FFFE3FF64F9A36026F602" ID-DOI="http://doi.org/10.5281/zenodo.7923348" ID-Zenodo-Dep="7923348" httpUri="https://zenodo.org/record/7923348/files/figure.png" pageId="15" pageNumber="262" startId="15.[151,250,1590,1614]" targetBox="[153,1433,183,1564]" targetPageId="15" targetType="figure">
<paragraph id="0E41369ECB6FFFE3FF64F9A36026F602" blockId="15.[151,1437,1590,1650]" pageId="15" pageNumber="262">
<emphasis id="3C8AEA8CCB6FFFE3FF64F9A36555F63E" bold="true" box="[151,289,1590,1614]" pageId="15" pageNumber="262">FIGURE 12.</emphasis>
<taxonomicName id="C9FE4D1DCB6FFFE3FEDBF9A3667DF63E" authority="Garibian &amp; Andreeva &amp; Kotov, 2023" authorityName="Garibian &amp; Andreeva &amp; Kotov" authorityYear="2023" box="[296,521,1590,1614]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="15" pageNumber="262" phylum="Arthropoda" rank="species" species="nikolaii" status="sp. nov.">
<emphasis id="3C8AEA8CCB6FFFE3FEDBF9A3667DF63E" box="[296,521,1590,1614]" italics="true" pageId="15" pageNumber="262">Ceriodaphnia nikolaii</emphasis>
</taxonomicName>
<emphasis id="3C8AEA8CCB6FFFE3FDE2F9A36617F63E" bold="true" box="[529,611,1590,1614]" pageId="15" pageNumber="262">
<taxonomicNameLabel id="27B957F7CB6FFFE3FDE2F9A36617F63E" box="[529,611,1590,1614]" pageId="15" pageNumber="262" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. AI postabdomen lateral view. Scale bars 0.1 mm.
</paragraph>
</caption>
<paragraph id="0E41369ECB6FFFE3FF34F95160A9F772" blockId="15.[151,1437,1732,2011]" pageId="15" pageNumber="262">
<emphasis id="3C8AEA8CCB6FFFE3FF34F9516603F6AE" bold="true" box="[199,631,1732,1759]" pageId="15" pageNumber="262">
Ephippial female (
<figureCitation id="96C52A1BCB6FFFE3FE55F9516671F6AE" box="[422,517,1732,1758]" captionStart="FIGURE 9" captionStartId="11.[151,250,1334,1358]" captionTargetBox="[153,1434,185,1309]" captionTargetId="figure-17@11.[151,1436,181,1311]" captionTargetPageId="11" captionText="FIGURE 9. Ceriodaphnia nikolaii sp. nov. from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia.A, ephippial female, lateral view. B, C, E, F, adult parthenogenetic female, lateral view. D, juvenile female, lateral view. Scale bars: 1 mm for E, F; 0.1 mm for A, D, F." figureDoi="http://doi.org/10.5281/zenodo.7923334" httpUri="https://zenodo.org/record/7923334/files/figure.png" pageId="15" pageNumber="262">Figs. 9a</figureCitation>
and
<figureCitation id="96C52A1BCB6FFFE3FDB0F951661BF6AE" box="[579,623,1732,1758]" captionStart="FIGURE 10" captionStartId="13.[151,250,1471,1495]" captionTargetBox="[153,1434,206,1445]" captionTargetId="figure-17@13.[151,1436,181,1447]" captionTargetPageId="13" captionText="FIGURE 10. Ceriodaphnia nikolaii sp. nov. from an oxbow of the Lena River near city ofYakutsk, Republic of Sakha (Yakutia), Asian Russia. A, ephippial female, dorsal view. B, E, adult parthenogenetic female, dorsal view. F, G, head, lateral view. H, antenna I. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923338" httpUri="https://zenodo.org/record/7923338/files/figure.png" pageId="15" pageNumber="262">10a</figureCitation>
)
</emphasis>
. Body subovoid, valves modified into ephippium with a single resting egg; in lateral view ephippium with expressed reticulation; ephippium without lateral projections.
</paragraph>
<paragraph id="0E41369ECB6FFFE3FF34F89966C6F73A" blockId="15.[151,1437,1732,2011]" pageId="15" pageNumber="262">
<emphasis id="3C8AEA8CCB6FFFE3FF34F899658FF756" bold="true" box="[199,507,1804,1831]" pageId="15" pageNumber="262">
Adult male (
<figureCitation id="96C52A1BCB6FFFE3FE93F899659AF756" box="[352,494,1804,1830]" captionStart="FIGURE 16" captionStartId="19.[151,250,1302,1326]" captionTargetBox="[153,1433,183,1276]" captionTargetId="figure-17@19.[151,1436,181,1278]" captionTargetPageId="19" captionText="FIGURE 16. Ceriodaphnia nikolaii sp. nov., male from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, adult male lateral view. B, juvenile male lateral view. C, adult male head. D, antenna I. E, F, postabdomen. G, H, limb I. I, anterior portion of limb II. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923356" httpUri="https://zenodo.org/record/7923356/files/figure.png" pageId="15" pageNumber="262">Fig. 16a,ci</figureCitation>
).
</emphasis>
Body subovoid and elongated, dorsal margin straight, postero-dorsal and ventral portion rounded. Postero-ventral angle rounded.
</paragraph>
<paragraph id="0E41369ECB6FFFE3FF34F8C1666DF7C6" blockId="15.[151,1437,1732,2011]" pageId="15" pageNumber="262">
<emphasis id="3C8AEA8CCB6FFFE3FF34F8C16570F71E" box="[199,260,1876,1902]" italics="true" pageId="15" pageNumber="262">Head</emphasis>
(
<figureCitation id="96C52A1BCB6FFFE3FEE7F8C165F1F71E" box="[276,389,1876,1902]" captionStart="FIGURE 16" captionStartId="19.[151,250,1302,1326]" captionTargetBox="[153,1433,183,1276]" captionTargetId="figure-17@19.[151,1436,181,1278]" captionTargetPageId="19" captionText="FIGURE 16. Ceriodaphnia nikolaii sp. nov., male from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, adult male lateral view. B, juvenile male lateral view. C, adult male head. D, antenna I. E, F, postabdomen. G, H, limb I. I, anterior portion of limb II. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923356" httpUri="https://zenodo.org/record/7923356/files/figure.png" pageId="15" pageNumber="262">Fig. 16a,c</figureCitation>
) relatively small, without rostrum. Compound eye large and ocellus small. Dorsal portion of head shield in lateral view with high depression between head and body; dorsal head pore present. Labrum (
<figureCitation id="96C52A1BCB6FFFE3FAA2F8ED64B5F7C6" captionStart="FIGURE 16" captionStartId="19.[151,250,1302,1326]" captionTargetBox="[153,1433,183,1276]" captionTargetId="figure-17@19.[151,1436,181,1278]" captionTargetPageId="19" captionText="FIGURE 16. Ceriodaphnia nikolaii sp. nov., male from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, adult male lateral view. B, juvenile male lateral view. C, adult male head. D, antenna I. E, F, postabdomen. G, H, limb I. I, anterior portion of limb II. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923356" httpUri="https://zenodo.org/record/7923356/files/figure.png" pageId="15" pageNumber="262">Figure 16c</figureCitation>
) as in parthenogenetic female.
</paragraph>
<paragraph id="0E41369ECB6FFFE3FF34F85566BDF7AA" blockId="15.[151,1437,1732,2011]" box="[199,713,1984,2011]" pageId="15" pageNumber="262">
<emphasis id="3C8AEA8CCB6FFFE3FF34F8556570F7AA" box="[199,260,1984,2010]" italics="true" pageId="15" pageNumber="262">Valve</emphasis>
(
<figureCitation id="96C52A1BCB6FFFE3FEE0F8556505F7AA" box="[275,369,1984,2010]" captionStart="FIGURE 16" captionStartId="19.[151,250,1302,1326]" captionTargetBox="[153,1433,183,1276]" captionTargetId="figure-17@19.[151,1436,181,1278]" captionTargetPageId="19" captionText="FIGURE 16. Ceriodaphnia nikolaii sp. nov., male from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, adult male lateral view. B, juvenile male lateral view. C, adult male head. D, antenna I. E, F, postabdomen. G, H, limb I. I, anterior portion of limb II. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923356" httpUri="https://zenodo.org/record/7923356/files/figure.png" pageId="15" pageNumber="262">Fig. 16a</figureCitation>
) as in parthenogenetic female.
</paragraph>
<caption id="5A816616CB70FFFCFF64FBB6605DF42E" ID-DOI="http://doi.org/10.5281/zenodo.7923350" ID-Zenodo-Dep="7923350" httpUri="https://zenodo.org/record/7923350/files/figure.png" pageId="16" pageNumber="263" startId="16.[151,250,1059,1083]" targetBox="[153,1434,183,1033]" targetPageId="16" targetType="figure">
<paragraph id="0E41369ECB70FFFCFF64FBB6605DF42E" blockId="16.[151,1437,1059,1119]" pageId="16" pageNumber="263">
<emphasis id="3C8AEA8CCB70FFFCFF64FBB66555F44B" bold="true" box="[151,289,1059,1083]" pageId="16" pageNumber="263">FIGURE 13.</emphasis>
<taxonomicName id="C9FE4D1DCB70FFFCFEDBFBB6667DF44B" authority="Garibian &amp; Andreeva &amp; Kotov, 2023" authorityName="Garibian &amp; Andreeva &amp; Kotov" authorityYear="2023" box="[296,521,1059,1083]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="16" pageNumber="263" phylum="Arthropoda" rank="species" species="nikolaii" status="sp. nov.">
<emphasis id="3C8AEA8CCB70FFFCFEDBFBB6667DF44B" box="[296,521,1059,1083]" italics="true" pageId="16" pageNumber="263">Ceriodaphnia nikolaii</emphasis>
</taxonomicName>
<emphasis id="3C8AEA8CCB70FFFCFDE2FBB66617F44B" bold="true" box="[529,611,1059,1083]" pageId="16" pageNumber="263">
<taxonomicNameLabel id="27B957F7CB70FFFCFDE2FBB66617F44B" box="[529,611,1059,1083]" pageId="16" pageNumber="263" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. AH, postabdominal claw. Scale bars 0.1 mm.
</paragraph>
</caption>
<paragraph id="0E41369ECB70FFFCFF34FB246178F4BB" blockId="16.[151,1437,1201,2020]" box="[199,1292,1201,1228]" pageId="16" pageNumber="263">
<emphasis id="3C8AEA8CCB70FFFCFF34FB246545F4BB" box="[199,305,1201,1227]" italics="true" pageId="16" pageNumber="263">Abdomen</emphasis>
(
<figureCitation id="96C52A1BCB70FFFCFEB3FB2465EAF4BB" box="[320,414,1201,1227]" captionStart="FIGURE 16" captionStartId="19.[151,250,1302,1326]" captionTargetBox="[153,1433,183,1276]" captionTargetId="figure-17@19.[151,1436,181,1278]" captionTargetPageId="19" captionText="FIGURE 16. Ceriodaphnia nikolaii sp. nov., male from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, adult male lateral view. B, juvenile male lateral view. C, adult male head. D, antenna I. E, F, postabdomen. G, H, limb I. I, anterior portion of limb II. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923356" httpUri="https://zenodo.org/record/7923356/files/figure.png" pageId="16" pageNumber="263">Fig. 16e</figureCitation>
) with four setulated segments lacking any process, covered by minute setules.
</paragraph>
<paragraph id="0E41369ECB70FFFCFF34FB406664F547" blockId="16.[151,1437,1201,2020]" pageId="16" pageNumber="263">
<emphasis id="3C8AEA8CCB70FFFCFF34FB40652BF49F" box="[199,351,1237,1263]" italics="true" pageId="16" pageNumber="263">Postabdomen</emphasis>
(
<figureCitation id="96C52A1BCB70FFFCFE9FFB4065A3F49F" box="[364,471,1237,1263]" captionStart="FIGURE 16" captionStartId="19.[151,250,1302,1326]" captionTargetBox="[153,1433,183,1276]" captionTargetId="figure-17@19.[151,1436,181,1278]" captionTargetPageId="19" captionText="FIGURE 16. Ceriodaphnia nikolaii sp. nov., male from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, adult male lateral view. B, juvenile male lateral view. C, adult male head. D, antenna I. E, F, postabdomen. G, H, limb I. I, anterior portion of limb II. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923356" httpUri="https://zenodo.org/record/7923356/files/figure.png" pageId="16" pageNumber="263">Fig.16e,f</figureCitation>
) elongated, subrectangular; ventral margin convex.Dorsal margin convex, preanal angle projected. Postanal and anal portion with about seven strong teeth. Gonopore opens subdistally on postabdomen. Postabdominal claw as in female.
</paragraph>
<paragraph id="0E41369ECB70FFFCFF34FAD461E6F50F" blockId="16.[151,1437,1201,2020]" pageId="16" pageNumber="263">
<emphasis id="3C8AEA8CCB70FFFCFF34FAD46541F52B" box="[199,309,1345,1371]" italics="true" pageId="16" pageNumber="263">Antenna I</emphasis>
(
<figureCitation id="96C52A1BCB70FFFCFEB6FAD465CCF52B" box="[325,440,1345,1371]" captionStart="FIGURE 16" captionStartId="19.[151,250,1302,1326]" captionTargetBox="[153,1433,183,1276]" captionTargetId="figure-17@19.[151,1436,181,1278]" captionTargetPageId="19" captionText="FIGURE 16. Ceriodaphnia nikolaii sp. nov., male from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, adult male lateral view. B, juvenile male lateral view. C, adult male head. D, antenna I. E, F, postabdomen. G, H, limb I. I, anterior portion of limb II. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923356" httpUri="https://zenodo.org/record/7923356/files/figure.png" pageId="16" pageNumber="263">Fig. 16c,d</figureCitation>
) cylindrical, long, with nine short aesthetascs. Sensory seta relatively short (shorter than longest aesthetascs) located subdistally on anttenna I body. Flagellum located distally, longer than antenna I body.
</paragraph>
<paragraph id="0E41369ECB70FFFCFF34FA1C6730F5D3" blockId="16.[151,1437,1201,2020]" box="[199,836,1417,1444]" pageId="16" pageNumber="263">
<emphasis id="3C8AEA8CCB70FFFCFF34FA1C654BF5D3" box="[199,319,1417,1443]" italics="true" pageId="16" pageNumber="263">Antenna II</emphasis>
(
<figureCitation id="96C52A1BCB70FFFCFEBEFA1C65DFF5D3" box="[333,427,1417,1443]" captionStart="FIGURE 16" captionStartId="19.[151,250,1302,1326]" captionTargetBox="[153,1433,183,1276]" captionTargetId="figure-17@19.[151,1436,181,1278]" captionTargetPageId="19" captionText="FIGURE 16. Ceriodaphnia nikolaii sp. nov., male from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, adult male lateral view. B, juvenile male lateral view. C, adult male head. D, antenna I. E, F, postabdomen. G, H, limb I. I, anterior portion of limb II. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923356" httpUri="https://zenodo.org/record/7923356/files/figure.png" pageId="16" pageNumber="263">Fig. 16c</figureCitation>
) same as in parthenogenetic female.
</paragraph>
<paragraph id="0E41369ECB70FFFCFF34FA386588F660" blockId="16.[151,1437,1201,2020]" pageId="16" pageNumber="263">
<emphasis id="3C8AEA8CCB70FFFCFF34FA386564F5B7" box="[199,272,1453,1479]" italics="true" pageId="16" pageNumber="263">Limb I</emphasis>
(
<figureCitation id="96C52A1BCB70FFFCFEECFA3865E7F5B7" box="[287,403,1453,1479]" captionStart="FIGURE 16" captionStartId="19.[151,250,1302,1326]" captionTargetBox="[153,1433,183,1276]" captionTargetId="figure-17@19.[151,1436,181,1278]" captionTargetPageId="19" captionText="FIGURE 16. Ceriodaphnia nikolaii sp. nov., male from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, adult male lateral view. B, juvenile male lateral view. C, adult male head. D, antenna I. E, F, postabdomen. G, H, limb I. I, anterior portion of limb II. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923356" httpUri="https://zenodo.org/record/7923356/files/figure.png" pageId="16" pageNumber="263">
Fig.
<quantity id="C9069B7BCB70FFFCFEA0FA38650AF5B7" box="[339,382,1453,1479]" metricMagnitude="-2" metricUnit="kg" metricValue="1.6" pageId="16" pageNumber="263" unit="g" value="16.0">16g</quantity>
,h
</figureCitation>
) with a cylindrical outer distal lobe bearing a long seta and a short setulated seta. Inner distal lobe with a copulatory hook and four seta of different size. Morphology of endites mostly same as in female, but endite 5 with an additional seta.
</paragraph>
<paragraph id="0E41369ECB70FFFCFF34F98C6776F628" blockId="16.[151,1437,1201,2020]" pageId="16" pageNumber="263">
<emphasis id="3C8AEA8CCB70FFFCFF34F98C656EF643" box="[199,282,1561,1587]" italics="true" pageId="16" pageNumber="263">Limb II</emphasis>
(
<figureCitation id="96C52A1BCB70FFFCFEDBF98C65F5F643" box="[296,385,1561,1587]" captionStart="FIGURE 16" captionStartId="19.[151,250,1302,1326]" captionTargetBox="[153,1433,183,1276]" captionTargetId="figure-17@19.[151,1436,181,1278]" captionTargetPageId="19" captionText="FIGURE 16. Ceriodaphnia nikolaii sp. nov., male from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, adult male lateral view. B, juvenile male lateral view. C, adult male head. D, antenna I. E, F, postabdomen. G, H, limb I. I, anterior portion of limb II. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923356" httpUri="https://zenodo.org/record/7923356/files/figure.png" pageId="16" pageNumber="263">Fig. 16i</figureCitation>
) endite 4 with long modified anterior seta (distal part bilaterally setulated); endite 3 and endite 2 bearing anterior seta longer than female anterior seta.
</paragraph>
<paragraph id="0E41369ECB70FFFCFF34F9F4675CF6B3" blockId="16.[151,1437,1201,2020]" pageId="16" pageNumber="263">
<emphasis id="3C8AEA8CCB70FFFCFF34F9F46599F60B" bold="true" box="[199,493,1633,1659]" pageId="16" pageNumber="263">
Juvenile male (
<figureCitation id="96C52A1BCB70FFFCFE89F9F465AAF60B" box="[378,478,1633,1659]" captionStart="FIGURE 16" captionStartId="19.[151,250,1302,1326]" captionTargetBox="[153,1433,183,1276]" captionTargetId="figure-17@19.[151,1436,181,1278]" captionTargetPageId="19" captionText="FIGURE 16. Ceriodaphnia nikolaii sp. nov., male from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, adult male lateral view. B, juvenile male lateral view. C, adult male head. D, antenna I. E, F, postabdomen. G, H, limb I. I, anterior portion of limb II. Scale bars 0.1 mm." figureDoi="http://doi.org/10.5281/zenodo.7923356" httpUri="https://zenodo.org/record/7923356/files/figure.png" pageId="16" pageNumber="263">Fig. 16b</figureCitation>
).
</emphasis>
Body subovoid, dorsal margin relatively straight, postero-dorsal and ventral portion round. Head round, without rostrum; antenna I cylindrical with a long thick sensory seta on the basal part and a relatively short flagellum (same in size as antenna I body).
</paragraph>
<paragraph id="0E41369ECB70FFFCFF34F958673EF77C" blockId="16.[151,1437,1201,2020]" pageId="16" pageNumber="263">
<emphasis id="3C8AEA8CCB70FFFCFF34F958648AF697" bold="true" box="[199,254,1741,1767]" pageId="16" pageNumber="263">Size.</emphasis>
Parthenogenetic female length
<quantity id="C9069B7BCB70FFFCFD9CF9586772F697" box="[623,774,1741,1767]" metricMagnitude="-4" metricUnit="m" metricValue="7.4" metricValueMax="11.0" metricValueMin="3.8" pageId="16" pageNumber="263" unit="mm" value="0.74" valueMax="1.1" valueMin="0.38">0.381.1 mm</quantity>
/ height
<quantity id="C9069B7BCB70FFFCFC9AF9586071F698" box="[873,1029,1741,1768]" metricMagnitude="-4" metricUnit="m" metricValue="5.15" metricValueMax="8.0" metricValueMin="2.3" pageId="16" pageNumber="263" unit="mm" value="0.515" valueMax="0.8" valueMin="0.23">0.230.8 mm</quantity>
; ephippial female length
<quantity id="C9069B7BCB70FFFCFADEF95861E0F697" box="[1325,1428,1741,1767]" metricMagnitude="-4" metricUnit="m" metricValue="8.8" pageId="16" pageNumber="263" unit="mm" value="0.88">0.88 mm</quantity>
/ height
<quantity id="C9069B7BCB70FFFCFF17F964653FF77C" box="[228,331,1777,1804]" metricMagnitude="-4" metricUnit="m" metricValue="6.4" pageId="16" pageNumber="263" unit="mm" value="0.64">0.64 mm</quantity>
; male length
<quantity id="C9069B7BCB70FFFCFE12F96466F7F77B" box="[481,643,1777,1803]" metricMagnitude="-4" metricUnit="m" metricValue="6.6" metricValueMax="6.8" metricValueMin="6.4" pageId="16" pageNumber="263" unit="mm" value="0.66" valueMax="0.68" valueMin="0.64">0.640.68 mm</quantity>
/ height
<quantity id="C9069B7BCB70FFFCFD2CF9646732F77C" box="[735,838,1777,1804]" metricMagnitude="-4" metricUnit="m" metricValue="3.5" pageId="16" pageNumber="263" unit="mm" value="0.35">0.35 mm</quantity>
.
</paragraph>
</subSubSection>
<subSubSection id="46E46515CB70FFFDFF34F8806681F724" lastPageId="17" lastPageNumber="264" pageId="16" pageNumber="263" type="diagnosis">
<paragraph id="0E41369ECB70FFFCFF34F88065F2F794" blockId="16.[151,1437,1201,2020]" pageId="16" pageNumber="263">
<emphasis id="3C8AEA8CCB70FFFCFF34F88065B8F75F" bold="true" box="[199,460,1813,1839]" pageId="16" pageNumber="263">Differential diagnosis.</emphasis>
This taxon belongs to the
<taxonomicName id="C9FE4D1DCB70FFFCFD18F880673EF75F" authorityName="Richard" authorityYear="1894" box="[747,842,1813,1839]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="16" pageNumber="263" phylum="Arthropoda" rank="species" species="dubia">
<emphasis id="3C8AEA8CCB70FFFCFD18F880673EF75F" box="[747,842,1813,1839]" italics="true" pageId="16" pageNumber="263">C. dubia</emphasis>
</taxonomicName>
<taxonomicNameLabel id="27B957F7CB70FFFCFCBCF88067F0F75F" box="[847,900,1813,1839]" pageId="16" pageNumber="263" sensu="lato">s.lat.</taxonomicNameLabel>
species group and has four diagnostic characters mentioned in the Introduction. The main diagnostic character is the presence of larger teeth on the postabdominal claw, but their length is c.a. half the claw diameter in
<taxonomicName id="C9FE4D1DCB70FFFCFCF2F8C86717F707" authorityName="Richard" authorityYear="1894" box="[769,867,1885,1911]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="16" pageNumber="263" phylum="Arthropoda" rank="species" species="dubia">
<emphasis id="3C8AEA8CCB70FFFCFCF2F8C86717F707" box="[769,867,1885,1911]" italics="true" pageId="16" pageNumber="263">C. dubia</emphasis>
</taxonomicName>
group, while c.a. a claw diameter in
<taxonomicName id="C9FE4D1DCB70FFFCFAFDF8C861E8F707" authorityName="Jurine" authorityYear="1820" box="[1294,1436,1885,1911]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="16" pageNumber="263" phylum="Arthropoda" rank="species" species="reticulata">
<emphasis id="3C8AEA8CCB70FFFCFAFDF8C861E8F707" box="[1294,1436,1885,1911]" italics="true" pageId="16" pageNumber="263">C. reticulata</emphasis>
</taxonomicName>
group. Presence of these teeth as well as rudimentary stiff (anterior) setae on the inner-distal portion of limb II differentiate well
<taxonomicName id="C9FE4D1DCB70FFFCFE91F83065AEF7CF" authority="Garibian &amp; Andreeva &amp; Kotov, 2023" authorityName="Garibian &amp; Andreeva &amp; Kotov" authorityYear="2023" box="[354,474,1957,1983]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="16" pageNumber="263" phylum="Arthropoda" rank="species" species="nikolaii" status="sp.nov.">
<emphasis id="3C8AEA8CCB70FFFCFE91F83065AEF7CF" box="[354,474,1957,1983]" italics="true" pageId="16" pageNumber="263">C. nikolaii</emphasis>
</taxonomicName>
<emphasis id="3C8AEA8CCB70FFFCFE10F8306641F7CF" bold="true" box="[483,565,1957,1983]" pageId="16" pageNumber="263">
<taxonomicNameLabel id="27B957F7CB70FFFCFE10F8306641F7CF" box="[483,565,1957,1983]" pageId="16" pageNumber="263" rank="species">sp.nov.</taxonomicNameLabel>
</emphasis>
from
<taxonomicName id="C9FE4D1DCB70FFFCFD8DF83067F6F7CF" box="[638,898,1957,1983]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="16" pageNumber="263" phylum="Arthropoda" rank="species" species="laticaudata-rotunda">
<emphasis id="3C8AEA8CCB70FFFCFD8DF83067F6F7CF" box="[638,898,1957,1983]" italics="true" pageId="16" pageNumber="263">C. laticaudata-rotunda</emphasis>
</taxonomicName>
group lacking such teeth and having relatively long setae on limb II.
</paragraph>
<caption id="5A816616CB71FFFDFF64FA62613EF643" ID-DOI="http://doi.org/10.5281/zenodo.7923352" ID-Zenodo-Dep="7923352" httpUri="https://zenodo.org/record/7923352/files/figure.png" pageId="17" pageNumber="264" startId="17.[151,250,1527,1551]" targetBox="[154,1432,183,1500]" targetPageId="17" targetType="figure">
<paragraph id="0E41369ECB71FFFDFF64FA62613EF643" blockId="17.[151,1437,1527,1588]" pageId="17" pageNumber="264">
<emphasis id="3C8AEA8CCB71FFFDFF64FA626555F67F" bold="true" box="[151,289,1527,1551]" pageId="17" pageNumber="264">FIGURE 14.</emphasis>
<taxonomicName id="C9FE4D1DCB71FFFDFEDBFA62667DF67F" authority="Garibian &amp; Andreeva &amp; Kotov, 2023" authorityName="Garibian &amp; Andreeva &amp; Kotov" authorityYear="2023" box="[296,521,1527,1551]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="17" pageNumber="264" phylum="Arthropoda" rank="species" species="nikolaii" status="sp. nov.">
<emphasis id="3C8AEA8CCB71FFFDFEDBFA62667DF67F" box="[296,521,1527,1551]" italics="true" pageId="17" pageNumber="264">Ceriodaphnia nikolaii</emphasis>
</taxonomicName>
<emphasis id="3C8AEA8CCB71FFFDFDE2FA626617F67F" bold="true" box="[529,611,1527,1551]" pageId="17" pageNumber="264">
<taxonomicNameLabel id="27B957F7CB71FFFDFDE2FA626617F67F" box="[529,611,1527,1551]" pageId="17" pageNumber="264" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, parthenogenetic female from an oxbow of the Lena River near city of Yakutsk, Republic of Sakha (Yakutia), Asian Russia. A, limb I. B, limb II. C, limb III. D, limb IV. E, limb V. Scale bars 0.1 mm.
</paragraph>
</caption>
<paragraph id="0E41369ECB71FFFDFF34F9136681F724" blockId="17.[151,1437,1669,2020]" pageId="17" pageNumber="264">
In contrast to other taxa of the
<taxonomicName id="C9FE4D1DCB71FFFDFDE2F9136604F6EF" authorityName="Richard" authorityYear="1894" box="[529,624,1669,1696]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="17" pageNumber="264" phylum="Arthropoda" rank="species" species="dubia">
<emphasis id="3C8AEA8CCB71FFFDFDE2F9136604F6EF" box="[529,624,1669,1696]" italics="true" pageId="17" pageNumber="264">C. dubia</emphasis>
</taxonomicName>
group, parthenogenetic female of
<taxonomicName id="C9FE4D1DCB71FFFDFC15F913602FF6EF" authority="Garibian &amp; Andreeva &amp; Kotov, 2023" authorityName="Garibian &amp; Andreeva &amp; Kotov" authorityYear="2023" box="[998,1115,1669,1696]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="17" pageNumber="264" phylum="Arthropoda" rank="species" species="nikolaii" status="sp.nov.">
<emphasis id="3C8AEA8CCB71FFFDFC15F913602FF6EF" box="[998,1115,1669,1696]" italics="true" pageId="17" pageNumber="264">C. nikolaii</emphasis>
</taxonomicName>
<emphasis id="3C8AEA8CCB71FFFDFB93F91360C6F6D0" bold="true" box="[1120,1202,1670,1696]" pageId="17" pageNumber="264">
<taxonomicNameLabel id="27B957F7CB71FFFDFB93F91360C6F6D0" box="[1120,1202,1670,1696]" pageId="17" pageNumber="264" rank="species">sp.nov.</taxonomicNameLabel>
</emphasis>
has the preanal angle of postabdomen from slightly pronounced to greatly pronounced (similarly to that in
<taxonomicName id="C9FE4D1DCB71FFFDFB9BF93C61F8F6B3" authorityName="P. E. Muller" authorityYear="1867" box="[1128,1420,1705,1731]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="17" pageNumber="264" phylum="Arthropoda" rank="species" species="laticaudata">
<emphasis id="3C8AEA8CCB71FFFDFB9BF93C61F8F6B3" box="[1128,1420,1705,1731]" italics="true" pageId="17" pageNumber="264">Ceriodaphnia laticaudata</emphasis>
</taxonomicName>
), while in other members of
<taxonomicName id="C9FE4D1DCB71FFFDFE20F95B6643F697" authorityName="Richard" authorityYear="1894" box="[467,567,1741,1768]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="17" pageNumber="264" phylum="Arthropoda" rank="species" species="dubia">
<emphasis id="3C8AEA8CCB71FFFDFE20F95B6643F697" box="[467,567,1741,1768]" italics="true" pageId="17" pageNumber="264">C. dubia</emphasis>
</taxonomicName>
<taxonomicNameLabel id="27B957F7CB71FFFDFDB3F9586601F697" box="[576,629,1741,1767]" pageId="17" pageNumber="264" sensu="lato">s.lat.</taxonomicNameLabel>
the preanal angle is smoothed or slightly projected. In addition, male postabdomen in
<taxonomicName id="C9FE4D1DCB71FFFDFEABF96765A6F77B" authority="Garibian &amp; Andreeva &amp; Kotov, 2023" authorityName="Garibian &amp; Andreeva &amp; Kotov" authorityYear="2023" box="[344,466,1777,1804]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="17" pageNumber="264" phylum="Arthropoda" rank="species" species="nikolaii" status="sp.nov.">
<emphasis id="3C8AEA8CCB71FFFDFEABF96765A6F77B" box="[344,466,1777,1804]" italics="true" pageId="17" pageNumber="264">C. nikolaii</emphasis>
</taxonomicName>
<emphasis id="3C8AEA8CCB71FFFDFE2FF967665AF77C" bold="true" box="[476,558,1778,1804]" pageId="17" pageNumber="264">
<taxonomicNameLabel id="27B957F7CB71FFFDFE2FF967665AF77C" box="[476,558,1778,1804]" pageId="17" pageNumber="264" rank="species">sp.nov.</taxonomicNameLabel>
</emphasis>
has an expressed preanal angle in contrast to.
<taxonomicName id="C9FE4D1DCB71FFFDFBA4F96460E3F77B" authorityName="Richard" authorityYear="1894" box="[1111,1175,1777,1803]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="17" pageNumber="264" phylum="Arthropoda" rank="species" sensu="lato" species="dubia">
<emphasis id="3C8AEA8CCB71FFFDFBA4F96460E3F77B" box="[1111,1175,1777,1803]" italics="true" pageId="17" pageNumber="264">dubia</emphasis>
</taxonomicName>
<taxonomicNameLabel id="27B957F7CB71FFFDFB52F96460B6F77B" box="[1185,1218,1777,1803]" pageId="17" pageNumber="264" sensu="lato">s.l.</taxonomicNameLabel>
with a completely smoothed preanal angle; the shortest seta of IDL has a size similar to that of two other setae, while in the latter the shortest seta is clearly shorter than other setae of IDL.
</paragraph>
</subSubSection>
<subSubSection id="46E46515CB71FFFDFF34F8C86035F794" pageId="17" pageNumber="264" type="distribution">
<paragraph id="0E41369ECB71FFFDFF34F8C86035F794" blockId="17.[151,1437,1669,2020]" pageId="17" pageNumber="264">
<emphasis id="3C8AEA8CCB71FFFDFF34F8C86515F707" bold="true" box="[199,353,1885,1911]" pageId="17" pageNumber="264">Distribution.</emphasis>
<taxonomicName id="C9FE4D1DCB71FFFDFE94F8CB65A9F707" authority="Garibian &amp; Andreeva &amp; Kotov, 2023" authorityName="Garibian &amp; Andreeva &amp; Kotov" authorityYear="2023" box="[359,477,1885,1912]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="17" pageNumber="264" phylum="Arthropoda" rank="species" species="nikolaii" status="sp. nov.">
<emphasis id="3C8AEA8CCB71FFFDFE94F8CB65A9F707" box="[359,477,1885,1912]" italics="true" pageId="17" pageNumber="264">C. nikolaii</emphasis>
</taxonomicName>
<emphasis id="3C8AEA8CCB71FFFDFE10F8CB6648F708" bold="true" box="[483,572,1886,1912]" pageId="17" pageNumber="264">
<taxonomicNameLabel id="27B957F7CB71FFFDFE10F8CB6648F708" box="[483,572,1886,1912]" pageId="17" pageNumber="264" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is known to date only from its
<typeStatus id="D145883CCB71FFFDFC65F8CB67B2F708" box="[918,966,1886,1912]" pageId="17" pageNumber="264">type</typeStatus>
locality: an oxbow of the Lena River near city of Yakutsk. Perhaps it is an endemic species with a limited distribution (i.e. it is absent in any other numerous samples from Easter Siberia and Far East studied by the authors). Note that the majority of studied populations from Republic of
<collectingRegion id="CC3AF87CCB71FFFDFED1F85C6512F793" box="[290,358,1993,2019]" country="Russia" name="Sakha" pageId="17" pageNumber="264">Sakha</collectingRegion>
(Yakutia) belonged to
<taxonomicName id="C9FE4D1DCB71FFFDFD94F85F66BCF793" authorityName="Richard" authorityYear="1894" box="[615,712,1993,2020]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="17" pageNumber="264" phylum="Arthropoda" rank="species" species="dubia">
<emphasis id="3C8AEA8CCB71FFFDFD94F85F66BCF793" box="[615,712,1993,2020]" italics="true" pageId="17" pageNumber="264">C. dubia</emphasis>
</taxonomicName>
<taxonomicNameLabel id="27B957F7CB71FFFDFD3DF85C669BF793" box="[718,751,1993,2019]" pageId="17" pageNumber="264" sensu="lato">s.l.</taxonomicNameLabel>
instead of
<taxonomicName id="C9FE4D1DCB71FFFDFC98F85F6795F793" authority="Garibian &amp; Andreeva &amp; Kotov, 2023" authorityName="Garibian &amp; Andreeva &amp; Kotov" authorityYear="2023" box="[875,993,1993,2020]" class="Branchiopoda" genus="Ceriodaphnia" kingdom="Animalia" order="Diplostraca" pageId="17" pageNumber="264" phylum="Arthropoda" rank="species" species="nikolaii" status="sp. nov.">
<emphasis id="3C8AEA8CCB71FFFDFC98F85F6795F793" box="[875,993,1993,2020]" italics="true" pageId="17" pageNumber="264">C. nikolaii</emphasis>
</taxonomicName>
<emphasis id="3C8AEA8CCB71FFFDFC1BF85F6035F794" bold="true" box="[1000,1089,1994,2020]" pageId="17" pageNumber="264">
<taxonomicNameLabel id="27B957F7CB71FFFDFC1BF85F6035F794" box="[1000,1089,1994,2020]" pageId="17" pageNumber="264" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</paragraph>
</subSubSection>
</treatment>
</document>