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<document id="8BFC7838A7F954D00A83F50D3F5C59E6" ID-DOI="10.3897/zookeys.1226.138389" ID-ZooBank="18E1EB7F-F9B5-4A13-BD4B-4E6D9266034A" ID-publisher-id="138389" URI-arpha="241305CC-1BDF-5E45-9DBB-0A90B4BEFA25" URI-zoobank="http://zoobank.org/18E1EB7F-F9B5-4A13-BD4B-4E6D9266034A" XM.bibliography_approvedBy="admin" XM.materialsCitations_approvedBy="admin" XM.taxonomicNames_approvedBy="admin" XM.treatmentCitations_approvedBy="admin" article-type="research-article" checkinTime="1738952666536" checkinUser="pensoft" docAuthor="Novikov, Aleksandr, Sharafutdinova, Dayana, Abramova, Ekaterina, Mayor, Tatyana &amp; Chertoprud, Elena" docDate="2025" docId="97A5F10FC10A5745A0CF9C0733A6F3A7" docLanguage="en" docName="ZooKeys 1226: 217-260" docOrigin="ZooKeys 1226" docSource="https://zookeys.pensoft.net/article/138389/download/xml/" docStyle="DocumentStyle:PensoftTaxPub.0000.journal_article.generic" docStyleName="PensoftTaxPub.0000.journal_article.generic" docTitle="Eucyclops speratus" docType="treatment" docVersion="2" dtd-version="3.0" lastPageNumber="260" masterDocId="241305CC1BDF5E459DBB0A90B4BEFA25" masterDocTitle="An integrative approach to the delimitation of pseudocryptic species in the Eucyclops speratus complex (Copepoda, Cyclopoida) with a description of a new species" masterLastPageNumber="260" masterPageNumber="217" pageNumber="217" updateTime="1738964216507" updateUser="admin">
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<mods:title id="2B85C757A180613B489EB0714F1C264F">An integrative approach to the delimitation of pseudocryptic species in the Eucyclops speratus complex (Copepoda, Cyclopoida) with a description of a new species</mods:title>
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<mods:namePart id="CA9F52ACED5B01D5731E7E26CD13F69F">Novikov, Aleksandr</mods:namePart>
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<mods:affiliation id="4CFB980C04692AD0EE2A55280CB4FCBD">A. N. Severtsov Institute of Ecology and Evolution, Leninsky Prospect 33, Moscow 119071, Russia &amp; Kazan Federal University, Kremlyovskaya St. 18, Kazan 420008, Russia</mods:affiliation>
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<mods:namePart id="7C90CFB9D608B6767B751E95CE1A9B9A">Sharafutdinova, Dayana</mods:namePart>
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<mods:affiliation id="AB9525E03F257277E107FB77C35C4886">A. N. Severtsov Institute of Ecology and Evolution, Leninsky Prospect 33, Moscow 119071, Russia &amp; Kazan Federal University, Kremlyovskaya St. 18, Kazan 420008, Russia</mods:affiliation>
</mods:name>
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<mods:namePart id="D6DB2B714B6A96BDF7E43C5180BEC1A9">Abramova, Ekaterina</mods:namePart>
<mods:affiliation id="79DB71010003992934C927191E923B78">Lena Delta Nature Reserve, Tiksi, 678400 Russia</mods:affiliation>
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<mods:namePart id="1DC482535C303C7416BA14E565E2A86F">Mayor, Tatyana</mods:namePart>
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<mods:affiliation id="88BAFB435ABFFDA9E1AC4EEF969A2CF2">A. N. Severtsov Institute of Ecology and Evolution, Leninsky Prospect 33, Moscow 119071, Russia &amp; Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 3 Ulan-Batorskaya St., Irkutsk 664033, Russia</mods:affiliation>
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<mods:namePart id="593EEF292D7A52DEFB4F8CA483D02624">Chertoprud, Elena</mods:namePart>
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<mods:affiliation id="AF7030D6018180583F551E2128BDCC64">A. N. Severtsov Institute of Ecology and Evolution, Leninsky Prospect 33, Moscow 119071, Russia</mods:affiliation>
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<mods:date id="017718273DB89D03BE2D433D415D04E8">2025</mods:date>
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<mods:identifier id="36CE5CB92E8DE2B3C4D6345481E58DE0" type="DOI">10.3897/zookeys.1226.138389</mods:identifier>
<mods:identifier id="F7D16CADD78E091CFD6A76FB809BF273" type="ZooBank">18E1EB7F-F9B5-4A13-BD4B-4E6D9266034A</mods:identifier>
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<treatment id="97A5F10FC10A5745A0CF9C0733A6F3A7" ID-arpha="97A5F10F-C10A-5745-A0CF-9C0733A6F3A7" LSID="urn:lsid:plazi:treatment:97A5F10FC10A5745A0CF9C0733A6F3A7" httpUri="http://treatment.plazi.org/id/97A5F10FC10A5745A0CF9C0733A6F3A7" scope_class="Copepoda" scope_family="Cyclopidae" scope_order="Cyclopoida" scope_subClass="Copepoda">
<subSubSection id="980BA64B7A63F8BEFFAE0DA435C390A8" type="nomenclature">
<paragraph id="E8E23A493C0EBD6A8A87E986F845EA0E">
<taxonomicName id="0C669A120791FFE0EF7EB9F05759A691" ID-CoL="8FTXR" authority="(Lilljeborg, 1901)" baseAuthorityName="Lilljeborg" baseAuthorityYear="1901" class="Copepoda" family="Cyclopidae" genus="Eucyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="species" species="speratus">
<emphasis id="57069122531D0C8A39DAFB52795BE9B9" italics="true">Eucyclops speratus</emphasis>
(
<bibRefCitation id="CC3FF6E150818827CBDE9AD236CAD5D0" author="Lilljeborg W" refId="B39" refString="Lilljeborg W (1901) Synopsis Specierum huc Usque in Suecia Observatarum Generis Cyclopis. Kongl. Svenska Vetenskaps-Akademiens Handlingar 35." year="1901">Lilljeborg, 1901</bibRefCitation>
)
</taxonomicName>
</paragraph>
</subSubSection>
<subSubSection id="BE84642D0D9776B361A71BA61AB9725E" type="description">
<paragraph id="A7BEBF9008E8A9779CF98306AFA93531">
<figureCitation id="56254F4423538F36A5FE786AAA9F6F9F" captionStart="Figure 19" captionStartId="F19" captionText="Figure 19. Eucyclops speratus. Female (Udmurtia), habitus: A dorsal B lateral C ventral. Ornamentation of somites: D second pedigerous somite E cephalothorax. Abbreviations: s sensillum, p pore. Scale bars: 200 μm (A C); 50 μm (D, E)." figureDoi="10.3897/zookeys.1226.138389.figure19" httpUri="https://binary.pensoft.net/fig/1244442">Figs 19</figureCitation>
,
<figureCitation id="2890302D2A1456E3EC21CB2103896CC0" captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Eucyclops speratus. Female A abdomen, dorsal (Saint-Petersburg) B caudal rami, ventral (Udmurtia) C antenna, posterior (Saint-Petersburg) D coxobasis and first endopodal segment of antenna, anterior (Udmurtia) E coxobasis and first endopodal segment of antenna, posterior (Udmurtia) F P 5, anterior (Saint-Petersburg). Scale bars: 100 μm (A); 50 μm (B E); 20 μm (F)." figureDoi="10.3897/zookeys.1226.138389.figure20" httpUri="https://binary.pensoft.net/fig/1244443">20</figureCitation>
,
<figureCitation id="B51F67B36E061D79C54254B0D6DDE57B" captionStart="Figure 21" captionStartId="F21" captionText="Figure 21. Eucyclops speratus. Female A P 3, anterior (Saint-Petersburg) B P 4, anterior (Saint-Petersburg) C P 4 coxa and intercoxal sclerite, posterior (Udmurtia). Scale bars: 50 μm." figureDoi="10.3897/zookeys.1226.138389.figure21" httpUri="https://binary.pensoft.net/fig/1244444">21</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="D5507D36852E5364EBB81B486975FDE4" type="reference_group">
<paragraph id="A46C43AEAA0D7868B6DF97D92ED70CBE">
<treatmentCitationGroup id="BC83E6DF38BDEB5E152203E65BC1A889">
<treatmentCitation id="AFEF37A65625E82E7D78185F3DA1526E" author="Lilljeborg W" page="88" year="1901">
<taxonomicName id="F7CD09754FD968912FC846D6C54B4FF4" authority="Lilljeborg 1901: 88" authorityName="Lilljeborg" authorityPageNumber="88" authorityYear="1901" class="Copepoda" family="Cyclopidae" genus="Cyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="variety" species="varius" variety="speratus">
<emphasis id="B044493EEB648741CEAB7767792C1278" italics="true">Cyclops varius var. speratus</emphasis>
<comment id="11BB8D63446E64CDD31AA5F23F85F51F">
<bibRefCitation id="810915CF72FCCFD125E70A8638027802" author="Lilljeborg W" firstAuthor="Lilljeborg" page="88" refId="B39" refString="Lilljeborg W (1901) Synopsis Specierum huc Usque in Suecia Observatarum Generis Cyclopis. Kongl. Svenska Vetenskaps-Akademiens Handlingar 35." year="1901">Lilljeborg 1901: 88</bibRefCitation>
, tab. V: figs 1215.
</comment>
</taxonomicName>
</treatmentCitation>
</treatmentCitationGroup>
</paragraph>
<paragraph id="230B44789D2F858B70F091A42799ED16">
<treatmentCitationGroup id="B16B9761AF1BC5D2B0D4F40269430435">
<taxonomicName id="20E99D55E47D6C9C22232F696D7E3A00" ID-CoL="BH6SW" baseAuthorityName="Lilljeborg" baseAuthorityYear="1901" class="Copepoda" family="Cyclopidae" genus="Leptocyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="species" species="speratus">
<emphasis id="A94BF0DEBCADBFEE5A23284A6C2749AD" italics="true">Leptocyclops speratus</emphasis>
</taxonomicName>
<comment id="1EA7D7F2FAA26239AB8EFB320C0912BF">
:
<treatmentCitation id="46318B9472CA8D8FEFC0BFF48BA8FB64" author="Sars GO" page="72" year="1914">
<bibRefCitation id="5EC2AF60504EAC821F6F19007D77039A" author="Sars GO" firstAuthor="Sars" page="72" refId="B54" refString="Sars GO (1914) An account of the Crustacea of Norway Vol. VI. Copepoda. Cyclopoida. Parts V and VI. Cyclopidae. Bergen Museum, Bergen, 5780 pp." year="1914">Sars 1914: 72</bibRefCitation>
</treatmentCitation>
, pl. XLIV.
</comment>
</treatmentCitationGroup>
</paragraph>
<paragraph id="F7BCCB213EC22BE608EE49B89D9AB640">
<treatmentCitationGroup id="7BA3334C440E47338F1B7303E0A8CEF3">
<taxonomicName id="91C3F969DF050E604E5EE6799629D89A" baseAuthorityName="Lilljeborg" baseAuthorityYear="1901" class="Copepoda" family="Cyclopidae" genus="Cyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="subSpecies" species="agilis" subSpecies="speratus">
<emphasis id="074A30CE10A9F7616AFFC00342F0C006" italics="true">Cyclops agilis speratus</emphasis>
</taxonomicName>
<comment id="F4B019096DFD210A9008E68EC26952A2">
:
<treatmentCitation id="B14C412B6A15B43DA213DDAD4722A577" author="Gurney R" page="104" year="1933">
<bibRefCitation id="5BC01C66E0A0BD5F7E4CDB97886505AB" author="Gurney R" firstAuthor="Gurney" journalOrPublisher="The Ray Society, London" page="104" refId="B19" refString="Gurney R (1933) British fresh-water Copepoda. Volume III. The Ray Society, London, 384 pp." title="British fresh-water Copepoda. Volume III." year="1933">Gurney 1933: 104</bibRefCitation>
</treatmentCitation>
, figs 13951405.
</comment>
</treatmentCitationGroup>
</paragraph>
<paragraph id="9DCAC80D06E393D7076C8464D21477E4">
<treatmentCitationGroup id="A4BCD47B0B7DBA4BCE37888CAED0A6D1">
<taxonomicName id="0177156AB55F1CF42591AF7751232D8B" ID-CoL="8FTXR" baseAuthorityName="Lilljeborg" baseAuthorityYear="1901" class="Copepoda" family="Cyclopidae" genus="Eucyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="species" species="speratus">
<emphasis id="ABC5885222F5422A3AB226956DD1940C" italics="true">Eucyclops speratus</emphasis>
</taxonomicName>
<comment id="BD69A918EFD87CAF8CCFA07C07A318BF">
:
<treatmentCitation id="0872B339CDBB8C63FCD25822EBBEFDF3" author="Monchenko VI" page="91" year="1974">
<bibRefCitation id="FA5DBBE5C99C084B2D778657A27EFCCA" author="Monchenko VI" firstAuthor="Monchenko" journalOrPublisher="Naukova dumka, Kiev" page="91" refId="B47" refString="Monchenko VI (1974) Fauna of Ukraine. Cyclopidae. Naukova dumka, Kiev, 451 pp." title="Fauna of Ukraine. Cyclopidae." year="1974">Monchenko 1974: 91</bibRefCitation>
</treatmentCitation>
, fig. 40;
<treatmentCitation id="14BB3DBDB3B73DA23CA5110FA4035690" author="Dumont HJ &amp; Decraemer W" page="262" year="1977">
<bibRefCitation id="38AFA3859534875B20209726B2D22A44" DOI="10.1007/BF00036451" author="Dumont HJ &amp; Decraemer W" firstAuthor="Dumont" journalOrPublisher="Hydrobiologia" page="262" pagination="257-278" refId="B11" refString="Dumont HJ, Decraemer W (1977) On the continental copepod fauna of Morocco. Hydrobiologia 52: 257278. https://doi.org/10.1007/BF00036451" title="On the continental copepod fauna of Morocco." volume="52" year="1977">Dumont and Decraemer 1977: 262</bibRefCitation>
</treatmentCitation>
, figs 3 C, 4;
<treatmentCitation id="2207D5E5E69C9D57BE6CE6D8CAA73A66">
<bibRefCitation id="7CEA96CA300AF5CD312FA1B6734E4057" author="Ishida and Hiruta" firstAuthor="Ishida" journalOrPublisher="Biogeography" pagination="87-91" refId="B26" refString="Ishida T, Hiruta S (1999) Eucyclops speratus from Japan (Crustacea: Copepoda: Cyclopoida). Biogeography 1: 8791." title="Eucyclops speratus from Japan (Crustacea: Copepoda: Cyclopoida)." volume="1" year="1999">Ishida and Hiruta 1999</bibRefCitation>
</treatmentCitation>
(part): 88, fig. 2 f j;
<treatmentCitation id="859E1779815E989E34473C2F38934C5F" author="Alekseev V &amp; Dumont HJ &amp; Pensaert J &amp; Baribwegure D &amp; Vanfleteren JR" page="136" year="2006">
<bibRefCitation id="ACF18BD2D56C859EA2BE173EA0AA6211" DOI="10.1111/j.1463-6409.2006.00223.x" author="Alekseev V &amp; Dumont HJ &amp; Pensaert J &amp; Baribwegure D &amp; Vanfleteren JR" etAl="et al." firstAuthor="Alekseev" journalOrPublisher="Zoologica Scripta" page="136" pagination="123-147" refId="B3" refString="Alekseev V, Dumont HJ, Pensaert J, Baribwegure D, Vanfleteren JR (2006) A redescription of Eucyclops serrulatus (Fischer, 1851) (Crustacea: Copepoda: Cyclopoida) and some related taxa, with a phylogeny of the E. serrulatus - group. Zoologica Scripta 35: 123147. https://doi.org/10.1111/j.1463-6409.2006.00223.x" title="A redescription of Eucyclops serrulatus (Fischer, 1851) (Crustacea: Copepoda: Cyclopoida) and some related taxa, with a phylogeny of the E. serrulatus - group." volume="35" year="2006">Alekseev et al. 2006: 136</bibRefCitation>
</treatmentCitation>
, fig. 14.
</comment>
</treatmentCitationGroup>
</paragraph>
<paragraph id="2EF703D1CB1B912E7F481E7A4EFFCF07">
<treatmentCitationGroup id="18DAAFC5522BD47043D1EF9482A713CB">
<taxonomicName id="CDC93804B841E522B67D835471B848F3" ID-CoL="8FTXR" baseAuthorityName="Lilljeborg" baseAuthorityYear="1901" class="Copepoda" family="Cyclopidae" genus="Eucyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="species" species="speratus" subGenus="Speratocyclops">
<emphasis id="1A942BAC34661AFC1052258AEC0DA06E" italics="true">Eucyclops</emphasis>
(
<emphasis id="0DA0E48FBE581F6CCA915913E1B80AC1" italics="true">Speratocyclops</emphasis>
)
<emphasis id="D7593EB6C279692E88444D79CA5391DD" italics="true">speratus</emphasis>
</taxonomicName>
<comment id="94BF007F39D0308EF2463C49ED70B682">
:
<treatmentCitation id="D88C02F943A99B74A123CC3CF3A232B9" author="Alekseev VR" page="511" year="2019">
<bibRefCitation id="DE458FB3A89E4EE6567A7E3E4BBEB94C" DOI="10.15298/arthsel.28.4.03" author="Alekseev VR" firstAuthor="Alekseev" journalOrPublisher="Arthropoda Selecta" page="511" pagination="490-514" refId="B2" refString="Alekseev VR (2019) Revision of the genus Eucyclops (Claus, 1893) and subfamily Eucyclopinae of the world fauna. Arthropoda Selecta 28: 490514. https://doi.org/10.15298/arthsel.28.4.03" title="Revision of the genus Eucyclops (Claus, 1893) and subfamily Eucyclopinae of the world fauna." volume="28" year="2019">Alekseev 2019: 511</bibRefCitation>
</treatmentCitation>
, fig. 13.
</comment>
</treatmentCitationGroup>
</paragraph>
</subSubSection>
<subSubSection id="SECID0ELSDI" type="material">
<paragraph id="39105B77EF52BF88AD55461CC6D8DBA7">
<heading id="ED26D102A80A2E99ECFF0B076DC2D899" reason="title">Material examined.</heading>
</paragraph>
<paragraph id="951520619CCE93EBCE0227622D05A254">
<materialsCitation id="839CAF4CF83956F12CD966047C634553" collectingDate="2023-06-20" collectionCode="EMKSU" collectorName="E. Chertoprud" country="Russia" latitude="59.8489" location="Orlov Pond" longLatPrecision="1" longitude="30.04384" specimenCode="VH 2000" specimenCount="1" specimenCount-female="1" stateProvince="Saint Petersburg">
<collectingCountry id="CFD7E95588F5ED93949DC4240972D50B" name="Russia">Russia</collectingCountry>
<specimenCount id="4874B88744E5CCBE3D39D99FBE1E415B" count="1" type="female">1 ♀</specimenCount>
dissected on two slides;
<collectingRegion id="2AB6566B5A850D35C5E36F5A0EA1E2D0" country="Russia" name="Saint Petersburg">Saint Petersburg</collectingRegion>
,
<location id="04474BF3E7181CEC17546E4F2F9CBCEA" LSID="urn:lsid:plazi:treatment:97A5F10FC10A5745A0CF9C0733A6F3A7:04474BF3E7181CEC17546E4F2F9CBCEA" country="Russia" latitude="59.8489" longLatPrecision="1" longitude="30.04384" name="Orlov Pond" stateProvince="Saint Petersburg">Orlov Pond</location>
;
<named-content content-type="dwc:verbatimCoordinates" id="NCID0EUSDI" specific-use="{&quot;type&quot;:&quot;Point&quot;,&quot;coordinates&quot;:[30.043840,59.848900]}">
<geoCoordinate id="B78F7E0F48E3CC671E317916AF26F86C" degrees="59.84890" direction="north" orientation="latitude" precision="1" value="59.8489">59.84890 ° N</geoCoordinate>
,
<geoCoordinate id="A2FF40FC76C875264FE27E7C3CB9406C" degrees="30.04384" direction="east" orientation="longitude" precision="1" value="30.04384">30.04384 ° E</geoCoordinate>
</named-content>
;
<date id="AD8E3978CC2AB932C2B7E6C63199D212" value="2023-06-20">
<collectingDate id="2287A88C9FE134A1698100D1DA451A1C" value="2023-06-20">20 June 2023</collectingDate>
</date>
;
<collectorName id="71B4F00431A1EFD20314B73DE39E5E35">E. Chertoprud</collectorName>
leg;
<abbrev id="ABBRID0EZSDI" xlink_title="Zoological Museum of Kazan Federal University">
<collectionCode id="C168C0DB31CCED9569F52080FFF2171B">EMKSU</collectionCode>
</abbrev>
<specimenCode id="FBFC54FD5B7FDBAE8B807612D843061A" collectionCode="EMKSU">VH 2000</specimenCode>
/ 2122 (N ° 86)
</materialsCitation>
; •
<materialsCitation id="8D773148993095135A2BA9EE75AB8A91" collectingDate="2023-06-20" collectorName="E. Chertoprud" country="Russia" latitude="59.8489" location="Orlov Pond" longLatPrecision="1" longitude="30.04384" specimenCount="2" specimenCount-female="2" stateProvince="Saint Petersburg">
<specimenCount id="B572F9819AA0239A724421DC0A525256" count="2" type="female">2 ♀</specimenCount>
dissected on two slides;
<collectingRegion id="154BBA704F6E5F3945620F7BF3A96AA6" country="Russia" name="Saint Petersburg">Saint Petersburg</collectingRegion>
,
<location id="C451BE188C6DA7E42381E4ACA97E921F" LSID="urn:lsid:plazi:treatment:97A5F10FC10A5745A0CF9C0733A6F3A7:C451BE188C6DA7E42381E4ACA97E921F" country="Russia" latitude="59.8489" longLatPrecision="1" longitude="30.04384" name="Orlov Pond" stateProvince="Saint Petersburg">Orlov Pond</location>
;
<named-content content-type="dwc:verbatimCoordinates" id="NCID0EATDI" specific-use="{&quot;type&quot;:&quot;Point&quot;,&quot;coordinates&quot;:[30.043840,59.848900]}">
<geoCoordinate id="E0D820C4F2297645583973175F17E915" degrees="59.84890" direction="north" orientation="latitude" precision="1" value="59.8489">59.84890 ° N</geoCoordinate>
,
<geoCoordinate id="93A1D9A49FFA3992AA500952F964E8F6" degrees="30.04384" direction="east" orientation="longitude" precision="1" value="30.04384">30.04384 ° E</geoCoordinate>
</named-content>
;
<date id="A5ED6A5085C6F570839E8B66AAED0D55" value="2023-06-20">
<collectingDate id="BE3DA31CB811331B642620F65F7AA462" value="2023-06-20">20 June 2023</collectingDate>
</date>
;
<collectorName id="B88E429D233F9C8689CA7986B17C30FD">E. Chertoprud</collectorName>
leg; in collection of A. Novikov (N ° 98, 111)
</materialsCitation>
; •
<materialsCitation id="D72C14ED2CAAC648073766B54A411EF7" collectingDate="2023-06-20" collectorName="E. Chertoprud" country="Russia" latitude="60.01293" location="Olginsky Pond" longLatPrecision="1" longitude="30.35514" specimenCount="1" specimenCount-female="1" stateProvince="Saint Petersburg">
<specimenCount id="39CC38578E7314140F1A8E5E5F113E85" count="1" type="female">1 ♀</specimenCount>
dissected on one slide;
<collectingRegion id="E3DF64C0228A5EDBB3046EB8FFCC73E2" country="Russia" name="Saint Petersburg">Saint Petersburg</collectingRegion>
,
<location id="5A8DB02AF08836808C62833E2768B2CF" LSID="urn:lsid:plazi:treatment:97A5F10FC10A5745A0CF9C0733A6F3A7:5A8DB02AF08836808C62833E2768B2CF" country="Russia" latitude="60.01293" longLatPrecision="1" longitude="30.35514" name="Olginsky Pond" stateProvince="Saint Petersburg">Olginsky Pond</location>
;
<named-content content-type="dwc:verbatimCoordinates" id="NCID0EITDI" specific-use="{&quot;type&quot;:&quot;Point&quot;,&quot;coordinates&quot;:[30.355140,60.012930]}">
<geoCoordinate id="66D285CF93A63F8A809AA78FE8B56E6D" degrees="60.01293" direction="north" orientation="latitude" precision="1" value="60.01293">60.01293 ° N</geoCoordinate>
,
<geoCoordinate id="2646C51F2BCE3C1D30A4AE8AA6C16359" degrees="30.35514" direction="east" orientation="longitude" precision="1" value="30.35514">30.35514 ° E</geoCoordinate>
</named-content>
;
<date id="64665EA96BEEAD013DFE77153D5EA4B7" value="2023-06-20">
<collectingDate id="052409E3B11403B8A1F38F46FF2C3F0C" value="2023-06-20">20 June 2023</collectingDate>
</date>
;
<collectorName id="5BB424F11585715BC1D0F41EE015E5BD">E. Chertoprud</collectorName>
leg; in collection of A. Novikov (N ° 97)
</materialsCitation>
; •
<materialsCitation id="FA11A39BC3F26CA1166BAE686C00824B" collectingDate="2020-06-28" collectorName="A. Novikov &amp; D. Sharafutdinova" country="Russia" latitude="55.76324" location="Naberezhnie Morkvashi village" longLatPrecision="1" longitude="48.857" specimenCount="3" specimenCount-female="3" stateProvince="Tatarstan republic">
<specimenCount id="DE392AAEE68931FDDE90293858A769D2" count="3" type="female">3 ♀</specimenCount>
dissected on three slides;
<collectingRegion id="E90FD42524D031D8514EE43F14AB2E0E" country="Russia" name="Tatarstan">Tatarstan republic</collectingRegion>
,
<location id="247B59FFBC65A74CFCDE2C4F2B1ED082" LSID="urn:lsid:plazi:treatment:97A5F10FC10A5745A0CF9C0733A6F3A7:247B59FFBC65A74CFCDE2C4F2B1ED082" country="Russia" latitude="55.76324" longLatPrecision="1" longitude="48.857" name="Naberezhnie Morkvashi village" stateProvince="Tatarstan republic">Naberezhnie Morkvashi village</location>
, puddle on stream;
<named-content content-type="dwc:verbatimCoordinates" id="NCID0EQTDI" specific-use="{&quot;type&quot;:&quot;Point&quot;,&quot;coordinates&quot;:[48.857000,55.763240]}">
<geoCoordinate id="A5280DE92C52143C78D71AB2A09467AC" degrees="55.76324" direction="north" orientation="latitude" precision="1" value="55.76324">55.76324 ° N</geoCoordinate>
,
<geoCoordinate id="F37D416A0CCDB7D474753DADAD33154D" degrees="48.85700" direction="east" orientation="longitude" precision="1" value="48.857">48.85700 ° E</geoCoordinate>
</named-content>
;
<date id="13C3BA20FF28A28D75E47CFFDA18A2FB" value="2020-06-28">
<collectingDate id="86C0DAD24CD67EF854E6ED2D54C05136" value="2020-06-28">28 June 2020</collectingDate>
</date>
;
<collectorName id="EFDB7596F21B3CD3B0D4D63A56BECCFA">A. Novikov</collectorName>
and
<collectorName id="92C9E715A9043D60E9AA013798065153">D. Sharafutdinova</collectorName>
leg; in collection of A. Novikov (N ° 75,
<named-content content-type="dwc:verbatimCoordinates" id="NCID0EYTDI" specific-use="{&quot;type&quot;:&quot;Point&quot;,&quot;coordinates&quot;:[104.000000,103.000000]}">103, 104</named-content>
)
</materialsCitation>
; •
<materialsCitation id="8C494162D29DA3407AA65F4DBC4F743B" collectedFrom="pond" collectingDate="2018-06-16" collectorName="A. Novikov" country="Russia" latitude="56.86162" location="Chistostem village" longLatPrecision="1" longitude="52.2163" specimenCount="6" specimenCount-female="6" stateProvince="Udmurtia republic">
<specimenCount id="3D32A29A67E7A593136B97AF950B43A4" count="6" type="female">6 ♀</specimenCount>
dissected on six slides;
<collectingRegion id="A5A7429B33756576E4586E7C7104B8EF">Udmurtia republic</collectingRegion>
,
<location id="DDC846742D208F897AAFF6337AC2D878" LSID="urn:lsid:plazi:treatment:97A5F10FC10A5745A0CF9C0733A6F3A7:DDC846742D208F897AAFF6337AC2D878" country="Russia" latitude="56.86162" longLatPrecision="1" longitude="52.2163" name="Chistostem village" stateProvince="Udmurtia republic">Chistostem village</location>
,
<collectedFrom id="BA36690586E9E8CE61F52447C1873087">pond</collectedFrom>
;
<named-content content-type="dwc:verbatimCoordinates" id="NCID0EAUDI" specific-use="{&quot;type&quot;:&quot;Point&quot;,&quot;coordinates&quot;:[52.216300,56.861620]}">
<geoCoordinate id="2135023558C4BA06EBE5209C00431A9F" degrees="56.86162" direction="north" orientation="latitude" precision="1" value="56.86162">56.86162 ° N</geoCoordinate>
,
<geoCoordinate id="F57F95079A6DAB7C686281B33461B8A3" degrees="52.21630" direction="east" orientation="longitude" precision="1" value="52.2163">52.21630 ° E</geoCoordinate>
</named-content>
;
<date id="88F8579F2C66CDF72CEE7F3B31E732C6" value="2018-06-16">
<collectingDate id="741D91B67D7E6B21CBA879E216BB387A" value="2018-06-16">16 June 2018</collectingDate>
</date>
;
<collectorName id="4B9FFA89D98A6D4EEFFC6F40F0F93F99">A. Novikov</collectorName>
leg; in collection of A. Novikov (N ° 30, 59, 60, 93, 95, 96)
</materialsCitation>
</paragraph>
</subSubSection>
<subSubSection id="SECID0EFUDI" type="description">
<paragraph id="1BC720179AD7321F55C23DF7C27AC0EB">
<heading id="780EC51B217EEDF83670365630D79CCB" reason="title">Description.</heading>
</paragraph>
<paragraph id="F502A0BF81CF3C41FB7E2131FEA19367">
<emphasis id="C70CB4BD7E27C9858D846B1B2BF7D552" bold="true">
Female.
<emphasis id="8DADA842919B09498AB6DEEDCDA57D30" bold="true" italics="true">Body elongated</emphasis>
</emphasis>
(Fig.
<figureCitation id="EE9CC44F80377FE249DDB81FB5AF7AA8" captionStart="Figure 19" captionStartId="F19" captionText="Figure 19. Eucyclops speratus. Female (Udmurtia), habitus: A dorsal B lateral C ventral. Ornamentation of somites: D second pedigerous somite E cephalothorax. Abbreviations: s sensillum, p pore. Scale bars: 200 μm (A C); 50 μm (D, E)." figureDoi="10.3897/zookeys.1226.138389.figure19" httpUri="https://binary.pensoft.net/fig/1244442">19 A C</figureCitation>
). Total body length from anterior margin of rostrum to posterior margin of caudal rami: mean 1310 µm (
<emphasis id="0BEBFF71C69C83309E292DA48DD12E6D" italics="true">n</emphasis>
= 1). Cephalothorax pitted (Fig.
<figureCitation id="312E13991B84B5FCA2B8E18744BB8B09" captionStart="Figure 19" captionStartId="F19" captionText="Figure 19. Eucyclops speratus. Female (Udmurtia), habitus: A dorsal B lateral C ventral. Ornamentation of somites: D second pedigerous somite E cephalothorax. Abbreviations: s sensillum, p pore. Scale bars: 200 μm (A C); 50 μm (D, E)." figureDoi="10.3897/zookeys.1226.138389.figure19" httpUri="https://binary.pensoft.net/fig/1244442">19 E</figureCitation>
), wider than first and second free somites, largest width 395 µm (
<emphasis id="64C73025538B4B05377B17EE0178B7FE" italics="true">n</emphasis>
= 1), surface with 253 pores and sensilla, with all groups (Fig.
<figureCitation id="046B2612E076B14E81583019C57EB336" captionStart="Figure 8" captionStartId="F8" captionText="Figure 8. Integumental organs pattern analysis A D general pattern of arrangement of integumental organs of the cephalothorax in E. sibiricus sp. nov. and E. speratus A dorsal side B ventral side C lateral side D frontal side E dendrogram of similarity between different sides of the cephalothorax of the studied individuals. Euclidean index F dendrogram of similarity between average cephalothoraxes. Euclidean index" figureDoi="10.3897/zookeys.1226.138389.figure8" httpUri="https://binary.pensoft.net/fig/1244431">8 A D</figureCitation>
). Naupliar eye not observed. Posterior margin of cephalothorax and all pedigerous somites smooth. Pedigerous and abdominal somites pitted, with “ sutures ” (Figs
<figureCitation id="4E66D88E16BB1750A7ABC70AEB5DE413" captionStart="Figure 19" captionStartId="F19" captionText="Figure 19. Eucyclops speratus. Female (Udmurtia), habitus: A dorsal B lateral C ventral. Ornamentation of somites: D second pedigerous somite E cephalothorax. Abbreviations: s sensillum, p pore. Scale bars: 200 μm (A C); 50 μm (D, E)." figureDoi="10.3897/zookeys.1226.138389.figure19" httpUri="https://binary.pensoft.net/fig/1244442">19 D</figureCitation>
,
<figureCitation id="2DE735DDA5272739B81F99C91F2B6E1B" captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Eucyclops speratus. Female A abdomen, dorsal (Saint-Petersburg) B caudal rami, ventral (Udmurtia) C antenna, posterior (Saint-Petersburg) D coxobasis and first endopodal segment of antenna, anterior (Udmurtia) E coxobasis and first endopodal segment of antenna, posterior (Udmurtia) F P 5, anterior (Saint-Petersburg). Scale bars: 100 μm (A); 50 μm (B E); 20 μm (F)." figureDoi="10.3897/zookeys.1226.138389.figure20" httpUri="https://binary.pensoft.net/fig/1244443">20 A, B</figureCitation>
).
</paragraph>
<caption id="4C3D37A5B170734509A435192EE3C33C" ID-DOI="10.3897/zookeys.1226.138389.figure19" ID-arpha="7F814ADF-9C38-5243-B49C-F8B9BF8E13BE" httpUri="https://binary.pensoft.net/fig/1244442" startId="F19">
<paragraph id="0C64DA6EEBD5B87F76FC7D4FEC829C31">
<label id="DD205DD5E7B85594318751A43DC9EF9D">Figure 19.</label>
</paragraph>
<paragraph id="71F954BF34C35DFFA15EC554CBD12D91">
<taxonomicName id="2DC3BEC471D7CC1FDE5CBAAD563170F3" baseAuthorityName="Lilljeborg" baseAuthorityYear="1901" class="Copepoda" family="Cyclopidae" genus="Eucyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="species" species="speratus">
<emphasis id="FD4DFA6BF2268A5AD087D18A2E23B02D" italics="true">Eucyclops speratus</emphasis>
</taxonomicName>
. Female (Udmurtia), habitus:
<emphasis id="3B4581078630694C17740103CB8ABE5A" bold="true">A</emphasis>
dorsal
<emphasis id="E2B1F46F8018A0B08AC37B28C83BF601" bold="true">B</emphasis>
lateral
<emphasis id="1D12A80006BDF3868A6E52A69B66CFD3" bold="true">C</emphasis>
ventral. Ornamentation of somites:
<emphasis id="60949463C9CE83B34970DD84C204AD84" bold="true">D</emphasis>
second pedigerous somite
<emphasis id="52C5C30F29E53EF858068DBE520DDA66" bold="true">E</emphasis>
cephalothorax. Abbreviations: s sensillum, p pore. Scale bars: 200 μm (
<emphasis id="166D3A01265E284693C130E7A64209B7" bold="true">A C</emphasis>
); 50 μm (
<emphasis id="4C945E4F014F040E4D8E0F14378C2E20" bold="true">D, E</emphasis>
).
</paragraph>
</caption>
<paragraph id="A3D683706DEEFDA8A050C221022D48AD">
<emphasis id="1C86AA3632CA5A7205E4AAF4BE4D75F9" bold="true" italics="true">Abdomen</emphasis>
and
<emphasis id="71DFF88648B1A17A992ED5C97833034A" bold="true" italics="true">P 6</emphasis>
similar to that in
<taxonomicName id="E72459819FF571079A2530FE00430301" authorityName="Novikov &amp; Sharafutdinova &amp; Abramova &amp; Mayor &amp; Chertoprud" authorityYear="2025" class="Copepoda" family="Cyclopidae" genus="Eucyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="species" species="sibiricus" status="sp. nov.">
<emphasis id="369399260C1BF5D6C0B9112AB57EB46D" italics="true">E. sibiricus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="19D9987D4FEC2E2A658F654802B75D3D" rank="species">sp. nov.</taxonomicNameLabel>
(Fig.
<figureCitation id="F4121EA029E8F3BDFB2A421CC900A819" captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Eucyclops speratus. Female A abdomen, dorsal (Saint-Petersburg) B caudal rami, ventral (Udmurtia) C antenna, posterior (Saint-Petersburg) D coxobasis and first endopodal segment of antenna, anterior (Udmurtia) E coxobasis and first endopodal segment of antenna, posterior (Udmurtia) F P 5, anterior (Saint-Petersburg). Scale bars: 100 μm (A); 50 μm (B E); 20 μm (F)." figureDoi="10.3897/zookeys.1226.138389.figure20" httpUri="https://binary.pensoft.net/fig/1244443">20 A</figureCitation>
).
</paragraph>
<caption id="B95CB0CEA80193398186F1EEBCAF1A6F" ID-DOI="10.3897/zookeys.1226.138389.figure20" ID-arpha="F9BA7C8A-8A5D-5F3E-80DE-E5F9741C2108" httpUri="https://binary.pensoft.net/fig/1244443" startId="F20">
<paragraph id="EEB9FB47E644665A36CE953BA53EF7F8">
<label id="EB6FE4E0184B6D73CD401E4E2E3C1429">Figure 20.</label>
</paragraph>
<paragraph id="8E4B1590D6F0A3044AF1A0D1396A173A">
<taxonomicName id="BC0B7209EC2B4DAB52F562206D15319D" baseAuthorityName="Lilljeborg" baseAuthorityYear="1901" class="Copepoda" family="Cyclopidae" genus="Eucyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="species" species="speratus">
<emphasis id="6179A179E109C8A939EDEF117E8C9C3D" italics="true">Eucyclops speratus</emphasis>
</taxonomicName>
. Female
<emphasis id="2D314AACA2EAF5C7A1DE9D89866CBA64" bold="true">A</emphasis>
abdomen, dorsal (Saint-Petersburg)
<emphasis id="091733A60C1553156E6F2D202FC8DABF" bold="true">B</emphasis>
caudal rami, ventral (Udmurtia)
<emphasis id="B67CDE7205B5501B631D46260DE73535" bold="true">C</emphasis>
antenna, posterior (Saint-Petersburg)
<emphasis id="6D94877D0C9591D7D2936469DD708CA9" bold="true">D</emphasis>
coxobasis and first endopodal segment of antenna, anterior (Udmurtia)
<emphasis id="B2D8FB1F4DDAC30A0E7AE58E8C8958F8" bold="true">E</emphasis>
coxobasis and first endopodal segment of antenna, posterior (Udmurtia)
<emphasis id="23553FCF2C12144B9EF9DBEBF56013E1" bold="true">F</emphasis>
P 5, anterior (Saint-Petersburg). Scale bars: 100 μm (
<emphasis id="51A04ACD4B9B24A5E87EA04BDB22345B" bold="true">A</emphasis>
); 50 μm (
<emphasis id="397F246C28611ABE98FB51AA4F373CEC" bold="true">B E</emphasis>
); 20 μm (
<emphasis id="374CA5D4DD83676348A25942DBC96DD5" bold="true">F</emphasis>
).
</paragraph>
</caption>
<paragraph id="BD289EE3EE2EDD4827B2C360F560C7C5">
<emphasis id="C56ADA1438179779CA88BE7F4DFEB33D" bold="true" italics="true">Caudal rami</emphasis>
similar to that in
<taxonomicName id="451D789FEB8DD25262795BA02ECA4237" authorityName="Novikov &amp; Sharafutdinova &amp; Abramova &amp; Mayor &amp; Chertoprud" authorityYear="2025" class="Copepoda" family="Cyclopidae" genus="Eucyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="species" species="sibiricus" status="sp. nov.">
<emphasis id="6A4B2F3DDF4C65CD73C7C37A0B94B6BA" italics="true">E. sibiricus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="CE15CAF1633F2C4AF4AE3F69F78EA662" rank="species">sp. nov.</taxonomicNameLabel>
(Fig.
<figureCitation id="A5703EB07574934255CB4C0EC5ECB57D" captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Eucyclops speratus. Female A abdomen, dorsal (Saint-Petersburg) B caudal rami, ventral (Udmurtia) C antenna, posterior (Saint-Petersburg) D coxobasis and first endopodal segment of antenna, anterior (Udmurtia) E coxobasis and first endopodal segment of antenna, posterior (Udmurtia) F P 5, anterior (Saint-Petersburg). Scale bars: 100 μm (A); 50 μm (B E); 20 μm (F)." figureDoi="10.3897/zookeys.1226.138389.figure20" httpUri="https://binary.pensoft.net/fig/1244443">20 A, B</figureCitation>
). Length / width ratio 5.46.3 (median 6.04,
<emphasis id="7D3C242B8AF61D1CCA5A08B84F4F1595" italics="true">n</emphasis>
= 13). Serra extending from base of seta II to anterior 20 % of ramus (10 % 36 %, median 20 %,
<emphasis id="36C55D6A9D7193C777EF96CC4E3DC454" italics="true">n</emphasis>
= 13). Ratio of length of seta VI to seta III 1.071.28 (median 1.18,
<emphasis id="F2D21DA7BAC114842A85862C5FE9CA7F" italics="true">n</emphasis>
= 13).
</paragraph>
<paragraph id="DFA2BA227EA9E1B25C4261AA13353913">
Antennules, antennae, mouthparts, labrum, and paragnaths similar to that in
<taxonomicName id="9C65004BB0FE24D8DB864EA25921C600" authorityName="Novikov &amp; Sharafutdinova &amp; Abramova &amp; Mayor &amp; Chertoprud" authorityYear="2025" class="Copepoda" family="Cyclopidae" genus="Eucyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="species" species="sibiricus" status="sp. nov.">
<emphasis id="A3F644F7DEB3FB0A21D00350849EAF1D" italics="true">E. sibiricus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="913AB4B716E2546B7A97B7D57EA33A60" rank="species">sp. nov.</taxonomicNameLabel>
</paragraph>
<paragraph id="46EF89C726D67C6C745574FF7E1F3097">
<emphasis id="79CB635612CAC281E32925765F5AADD7" bold="true" italics="true">Antenna</emphasis>
(Fig.
<figureCitation id="5594498B15FD3A64FE7923455DA525C8" captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Eucyclops speratus. Female A abdomen, dorsal (Saint-Petersburg) B caudal rami, ventral (Udmurtia) C antenna, posterior (Saint-Petersburg) D coxobasis and first endopodal segment of antenna, anterior (Udmurtia) E coxobasis and first endopodal segment of antenna, posterior (Udmurtia) F P 5, anterior (Saint-Petersburg). Scale bars: 100 μm (A); 50 μm (B E); 20 μm (F)." figureDoi="10.3897/zookeys.1226.138389.figure20" httpUri="https://binary.pensoft.net/fig/1244443">20 C E</figureCitation>
). Coxobasis with groups of spinules 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16. Number of spinules of group 7: 310 (median 5,
<emphasis id="B8B316983A723FD68BFE88676F0DE0F6" italics="true">n</emphasis>
= 13). Number of spinules of group 8: 010 (median 4,
<emphasis id="4C61F628AF37970CD0BE332ABBA60B11" italics="true">n</emphasis>
= 13).
</paragraph>
<paragraph id="CB6A96345C01506B7F4F5A035396DFE4">
<emphasis id="D18C03EF58E39ED8DBB4223F97BD6C85" bold="true" italics="true">P 1 P 4</emphasis>
similar to that in
<taxonomicName id="024129BE8DA761EBAFD9FA61ACAD3465" authorityName="Novikov &amp; Sharafutdinova &amp; Abramova &amp; Mayor &amp; Chertoprud" authorityYear="2025" class="Copepoda" family="Cyclopidae" genus="Eucyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="species" species="sibiricus" status="sp. nov.">
<emphasis id="70D06B1C4B8137C034A28C9EF1D9539D" italics="true">E. sibiricus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="7203A8E026F6DB394BE85723145D0045" rank="species">sp. nov.</taxonomicNameLabel>
, but with shorter segments (Fig.
<figureCitation id="D1366A5486846C6DA244EB0753B11FE4" captionStart="Figure 21" captionStartId="F21" captionText="Figure 21. Eucyclops speratus. Female A P 3, anterior (Saint-Petersburg) B P 4, anterior (Saint-Petersburg) C P 4 coxa and intercoxal sclerite, posterior (Udmurtia). Scale bars: 50 μm." figureDoi="10.3897/zookeys.1226.138389.figure21" httpUri="https://binary.pensoft.net/fig/1244444">21 A C</figureCitation>
). Number of inner setules of P 4 Exp 1 (Fig.
<figureCitation id="6536CF47F06455204700866F81EC3830" captionStart="Figure 21" captionStartId="F21" captionText="Figure 21. Eucyclops speratus. Female A P 3, anterior (Saint-Petersburg) B P 4, anterior (Saint-Petersburg) C P 4 coxa and intercoxal sclerite, posterior (Udmurtia). Scale bars: 50 μm." figureDoi="10.3897/zookeys.1226.138389.figure21" httpUri="https://binary.pensoft.net/fig/1244444">21 B</figureCitation>
): 16 (median 1,
<emphasis id="6BF94ED5FDD64ED0A85564AEA6631E96" italics="true">n</emphasis>
= 13). Number of inner setules of P 4 Exp 2: 13 (median 0,
<emphasis id="306A1D186A5BEB36CA495A88356CE6AB" italics="true">n</emphasis>
= 13).
</paragraph>
<caption id="C5655089D4908786B1BB21F850849EBF" ID-DOI="10.3897/zookeys.1226.138389.figure21" ID-arpha="85B42CC9-3826-5B4D-94DA-9DE4FDE9902C" httpUri="https://binary.pensoft.net/fig/1244444" startId="F21">
<paragraph id="AC253760F4F99F3A69995C15753C6A3A">
<label id="09BBA4B8AD32B1D43F2E5E57345CB1B5">Figure 21.</label>
</paragraph>
<paragraph id="16F5D0C0F6076D496D05722B8FAE2ACE">
<taxonomicName id="4BF5021A3E1F7CF5E85BC2AE059E1E78" baseAuthorityName="Lilljeborg" baseAuthorityYear="1901" class="Copepoda" family="Cyclopidae" genus="Eucyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="species" species="speratus">
<emphasis id="6B372882845D74A9B6727C31FB33F7CC" italics="true">Eucyclops speratus</emphasis>
</taxonomicName>
. Female
<emphasis id="C9FA6601D040C080E539339B8AE975C3" bold="true">A</emphasis>
P 3, anterior (Saint-Petersburg)
<emphasis id="020924EF3C63DADD3F8BF53E08000234" bold="true">B</emphasis>
P 4, anterior (Saint-Petersburg)
<emphasis id="05F5D42D28ED657DDC8A52C923BB27C0" bold="true">C</emphasis>
P 4 coxa and intercoxal sclerite, posterior (Udmurtia). Scale bars: 50 μm.
</paragraph>
</caption>
<paragraph id="98946A61EF52D7D3A98FF34BD96A54A5">
<emphasis id="7A85A990CCC6CAC685199730850186D1" bold="true" italics="true">P 5</emphasis>
(Fig.
<figureCitation id="E0F8D1AADC78BE99D578A9B4E8575DDD" captionStart="Figure 20" captionStartId="F20" captionText="Figure 20. Eucyclops speratus. Female A abdomen, dorsal (Saint-Petersburg) B caudal rami, ventral (Udmurtia) C antenna, posterior (Saint-Petersburg) D coxobasis and first endopodal segment of antenna, anterior (Udmurtia) E coxobasis and first endopodal segment of antenna, posterior (Udmurtia) F P 5, anterior (Saint-Petersburg). Scale bars: 100 μm (A); 50 μm (B E); 20 μm (F)." figureDoi="10.3897/zookeys.1226.138389.figure20" httpUri="https://binary.pensoft.net/fig/1244443">20 F</figureCitation>
) similar to that in
<taxonomicName id="0C0D58FB1BA4C5BBC70829CEFB8D1D97" authorityName="Novikov &amp; Sharafutdinova &amp; Abramova &amp; Mayor &amp; Chertoprud" authorityYear="2025" class="Copepoda" family="Cyclopidae" genus="Eucyclops" kingdom="Animalia" order="Cyclopoida" phylum="Arthropoda" rank="species" species="sibiricus" status="sp. nov.">
<emphasis id="F30B7646C7204D8DAD5A6B3C10ED535F" italics="true">E. sibiricus</emphasis>
</taxonomicName>
<taxonomicNameLabel id="7E8D4A22991E52F59C97F5957360C2C3" rank="species">sp. nov.</taxonomicNameLabel>
, but without outer row of spinules.
</paragraph>
<paragraph id="F67FF8BB5EC5992C7D365124C21C9832">
<emphasis id="6BB7D04D5748D1CC305420CA4663147C" bold="true">Male.</emphasis>
Not studied.
</paragraph>
</subSubSection>
</treatment>
</document>