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<document id="98A1ECEF82DF69F057A43C559257906F" ID="10.11646/zootaxa.4147.4.1" ID-DOI="10.11646/zootaxa.4147.4.1" ID-GBIF-Dataset="fd7f8662-9544-4384-8d7e-8d180de6d749" ID-ISSN="1175-5326" ID-Zenodo-Dep="267823" ID-ZooBank="550E60AC-54F6-4FB4-8A79-058A0996B598" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1470377504845" checkinUser="plazi" docAuthor="Bekker, Eugeniya I. &amp; Kotov, Alexey A." docDate="2016" docId="03CD879F9C39FF8856A32CAAE622FDD6" docLanguage="en" docName="zootaxa.4147.4.1.pdf" docOrigin="Zootaxa 4147 (4)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Eurycercus nigracanthus" docType="treatment" docVersion="8" lastPageNumber="360" masterDocId="FFF4FFE79C30FF8256342A5FE271FFCE" masterDocTitle="A revision of the subgenus Eurycercus (Teretifrons) Frey, 1975 (Crustacea: Cladocera) in the Holarctic with description of a new species from Russian Arctic" masterLastPageNumber="376" masterPageNumber="351" pageNumber="360" updateTime="1698366975285" updateUser="plazi">
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<mods:title id="8A347BEA0582D9C055A76D082F904A64">A revision of the subgenus Eurycercus (Teretifrons) Frey, 1975 (Crustacea: Cladocera) in the Holarctic with description of a new species from Russian Arctic</mods:title>
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<mods:namePart id="404E75B8DEBDF01048748213DB4FB67B">Bekker, Eugeniya I.</mods:namePart>
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<mods:namePart id="9DBF6B3620269C53F1D4D5A999745F4F">Kotov, Alexey A.</mods:namePart>
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<mods:date id="435FBCA30933DF42B3BF415F89E89C38">2016</mods:date>
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<treatment id="03CD879F9C39FF8856A32CAAE622FDD6" ID-DOI="http://doi.org/10.5281/zenodo.5631053" ID-GBIF-Taxon="123514190" ID-Zenodo-Dep="5631053" LSID="urn:lsid:plazi:treatment:03CD879F9C39FF8856A32CAAE622FDD6" httpUri="http://treatment.plazi.org/id/03CD879F9C39FF8856A32CAAE622FDD6" lastPageId="10" lastPageNumber="360" pageId="9" pageNumber="360">
<subSubSection id="C37E65029C39FF8B56A32CAAE37BF8FF" pageId="9" pageNumber="360" type="nomenclature">
<paragraph id="8BDB36899C39FF8B56A32CAAE0DBF8C1" blockId="9.[151,682,1781,1841]" box="[151,682,1781,1807]" pageId="9" pageNumber="360">
<heading id="D09381E59C39FF8B56A32CAAE0DBF8C1" bold="true" box="[151,682,1781,1807]" fontSize="11" level="1" pageId="9" pageNumber="360" reason="1">
<emphasis id="B910EA9B9C39FF8B56A32CAAE0DBF8C1" bold="true" box="[151,682,1781,1807]" pageId="9" pageNumber="360">
<taxonomicName id="4C644D0A9C39FF8B56A32CAAE39EF8C1" ID-CoL="3D3KD" box="[151,495,1781,1807]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="9" pageNumber="360" phylum="Arthropoda" rank="species" species="nigracanthus">
<emphasis id="B910EA9B9C39FF8B56A32CAAE353F8C1" bold="true" box="[151,290,1781,1807]" italics="true" pageId="9" pageNumber="360">Eurycercus</emphasis>
cf.
<emphasis id="B910EA9B9C39FF8B577A2CAAE39EF8C1" bold="true" box="[334,495,1781,1807]" italics="true" pageId="9" pageNumber="360">nigracanthus</emphasis>
</taxonomicName>
from Churchil
</emphasis>
</heading>
</paragraph>
<paragraph id="8BDB36899C39FF8B56A32D47E37BF8FF" blockId="9.[151,682,1781,1841]" box="[151,266,1816,1841]" pageId="9" pageNumber="360">
(
<figureCitation id="135F2A0C9C39FF8B56AB2D47E372F8FF" box="[159,259,1816,1841]" captionStart-0="FIGURE 6" captionStart-1="FIGURE 7" captionStart-2="FIGURE 8" captionStartId-0="10.[151,250,1812,1834]" captionStartId-1="11.[151,250,1936,1958]" captionStartId-2="12.[151,250,1899,1921]" captionTargetBox-0="[163,1424,633,1762]" captionTargetBox-1="[181,1391,195,1890]" captionTargetBox-2="[164,1404,200,1857]" captionTargetId-0="figure@10.[151,1436,621,1770]" captionTargetId-1="figure@11.[174,1399,193,1895]" captionTargetId-2="figure@12.[151,1436,193,1878]" captionTargetPageId-0="10" captionTargetPageId-1="11" captionTargetPageId-2="12" captionText-0="FIGURE 6. Eurycercus cf. nigracanthus, parthenogenetic female from tundra pond TP- 3, Churchill, Manitoba, Canada. A – B, lateral view. C, head, lateral view. D, head shield. E, head pores. Scale bar denotes 1 mm." captionText-1="FIGURE 7. Eurycercus cf. nigracanthus, parthenogenetic female from tundra pond TP- 3, Churchill, Manitoba, Canada. A, postabdomen. B, its distal portion. C, postabdominal claw. D, antenna I. E, antenna II. F, proximal segments of exopod. G, limb I. H, IDL of limb I. I, limb II. J, distal armature of its gnathobase. Scale bar denotes 1 mm for A; 0.1 mm for B – J." captionText-2="FIGURE 8. Eurycercus cf. nigracanthus, limbs of parthenogenetic female from tundra pond TP- 3, Churchill, Manitoba, Canada. A, limb III. B, distal armature of its gnathobase. C, limb IV. D, distal armature of its gnathobase. E, limb V, F, its gnathobase. Scale bar denotes 0.1 mm." httpUri-0="https://zenodo.org/record/267829/files/figure.png" httpUri-1="https://zenodo.org/record/267830/files/figure.png" httpUri-2="https://zenodo.org/record/267831/files/figure.png" pageId="9" pageNumber="360">Figs 6–8</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="C37E65029C39FF8B56A32D3FE6A1F80F" pageId="9" pageNumber="360" type="materials_examined">
<paragraph id="8BDB36899C39FF8B56A32D3FE6A1F80F" blockId="9.[151,1436,1888,2021]" pageId="9" pageNumber="360">
<emphasis id="B910EA9B9C39FF8B56A32D3FE3F9F8B7" bold="true" box="[151,392,1888,1913]" pageId="9" pageNumber="360">Material examined.</emphasis>
<emphasis id="B910EA9B9C39FF8B57A22D3FE09DF8B7" box="[406,748,1888,1913]" italics="true" pageId="9" pageNumber="360">
All from
<collectingRegion id="49A0F86B9C39FF8B543C2D3FE009F8B7" box="[520,632,1888,1913]" country="Canada" name="Manitoba" pageId="9" pageNumber="360">Manitoba</collectingRegion>
,
<collectingCountry id="F37376199C39FF8B54BE2D3FE097F8B7" box="[650,742,1888,1913]" name="Canada" pageId="9" pageNumber="360">Canada</collectingCountry>
:
</emphasis>
8 parthenogenetic
<specimenCount id="9D62FD009C39FF8B55EC2D3EE673F8B6" box="[984,1026,1889,1912]" pageId="9" pageNumber="360" type="female">♀♀</specimenCount>
from Pond X, Churchill, coll. in
<date id="FFDA10499C39FF8B56A32DDBE366F853" box="[151,279,1924,1949]" pageId="9" pageNumber="360" value="2006-08-15">15.08.2006</date>
, AAK M-2773. 2 parthenogenetic
<specimenCount id="9D62FD009C39FF8B54922DDAE0A1F852" box="[678,720,1925,1948]" pageId="9" pageNumber="360" type="female">♀♀</specimenCount>
from TP-1, tundra pond, Churchill, coll. in 0 8.2006, AAK M- 2772. 2 parthenogenetic
<specimenCount id="9D62FD009C39FF8B57982DF6E3A7F80E" box="[428,470,1961,1984]" pageId="9" pageNumber="360" type="female">♀♀</specimenCount>
from TP-3, tundra pond, Churchill, coll. in 0 8.2006, AAK M-2771.
</paragraph>
</subSubSection>
<subSubSection id="C37E65029C39FF8856F32D93E622FDD6" lastPageId="10" lastPageNumber="361" pageId="9" pageNumber="360" type="discussion">
<paragraph id="8BDB36899C39FF8856F32D93E622FDD6" blockId="9.[151,1436,1888,2021]" lastBlockId="10.[151,1436,151,536]" lastPageId="10" lastPageNumber="361" pageId="9" pageNumber="360">
<emphasis id="B910EA9B9C39FF8B56F32D93E33EF82B" bold="true" box="[199,335,1996,2021]" pageId="9" pageNumber="360">Comments.</emphasis>
Using genetic barcoding, Jeffrey
<emphasis id="B910EA9B9C39FF8B54ED2D92E17DF82B" box="[729,780,1996,2021]" italics="true" pageId="9" pageNumber="360">et al</emphasis>
. (2011) detected two species of
<taxonomicName id="4C644D0A9C39FF8B52BE2D92E7EDF82B" authority="in Churchill" authorityName="in Churchill" box="[1162,1436,1996,2021]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="9" pageNumber="360" phylum="Arthropoda" rank="genus">
<emphasis id="B910EA9B9C39FF8B52BE2D92E778F82A" box="[1162,1289,1997,2020]" italics="true" pageId="9" pageNumber="360">Eurycercus</emphasis>
in Churchill
</taxonomicName>
vicinities:
<taxonomicName id="4C644D0A9C3AFF8857272AC6E051FF7E" box="[275,544,151,176]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="10" pageNumber="361" phylum="Arthropoda" rank="species" species="longirostris">
<emphasis id="B910EA9B9C3AFF8857272AC6E051FF7E" box="[275,544,151,176]" italics="true" pageId="10" pageNumber="361">Eurycercus longirostris</emphasis>
</taxonomicName>
and
<taxonomicName id="4C644D0A9C3AFF8854572AC6E144FF7E" box="[611,821,151,176]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="10" pageNumber="361" phylum="Arthropoda" rank="species" species="longirostris">
<emphasis id="B910EA9B9C3AFF8854572AC6E00DFF7E" box="[611,636,153,176]" italics="true" pageId="10" pageNumber="361">E.</emphasis>
cf.
<emphasis id="B910EA9B9C3AFF8854872AC8E144FF7E" box="[691,821,151,176]" italics="true" pageId="10" pageNumber="361">longirostris</emphasis>
</taxonomicName>
. Subsequent
<emphasis id="B910EA9B9C3AFF8855E32AC7E676FF61" box="[983,1031,152,175]" italics="true" pageId="10" pageNumber="361">COI</emphasis>
-based study (
<bibRefCitation id="EFF54B789C3AFF88529B2AC8E7E5FF7E" author="Bekker" box="[1199,1428,151,176]" pageId="10" pageNumber="361" refString="Bekker, E. I. (2012) Morphology, systematics and phylogeny of the cladoceran genus Eurycercus Baird, 1843 (Cladocera: Anomopoda: Eurycercidae) of world fauna. Ph. D. Thesis, A. N. Severtsov Institute of Ecology and Evolution, Moscow, 242 pp." type="book" year="2012">
Bekker
<emphasis id="B910EA9B9C3AFF88533B2AC6E737FF7E" box="[1295,1350,151,176]" italics="true" pageId="10" pageNumber="361">et al</emphasis>
. 2012
</bibRefCitation>
) revealed that the latter was identified wrongly and in reality belongs to an undescribed species of
<emphasis id="B910EA9B9C3AFF8852DE2AE2E772FF1A" box="[1258,1283,189,212]" italics="true" pageId="10" pageNumber="361">E.</emphasis>
(
<taxonomicName id="4C644D0A9C3AFF8853202AE3E7FAFF1A" box="[1300,1419,188,212]" class="Branchiopoda" family="Chydoridae" genus="Teretifrons" higherTaxonomySource="GBIF" kingdom="Animalia" order="Diplostraca" pageId="10" pageNumber="361" phylum="Arthropoda" rank="genus">
<emphasis id="B910EA9B9C3AFF8853202AE3E7FAFF1A" box="[1300,1419,188,212]" italics="true" pageId="10" pageNumber="361">Teretifrons</emphasis>
</taxonomicName>
), different from both
<taxonomicName id="4C644D0A9C3AFF88574C2ABEE38BFF36" box="[376,506,223,248]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="10" pageNumber="361" phylum="Arthropoda" rank="species" species="glacialis">
<emphasis id="B910EA9B9C3AFF88574C2ABEE38BFF36" box="[376,506,223,248]" italics="true" pageId="10" pageNumber="361">E. glacialis</emphasis>
</taxonomicName>
and
<taxonomicName id="4C644D0A9C3AFF8854072ABEE099FF36" box="[563,744,223,248]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="10" pageNumber="361" phylum="Arthropoda" rank="species" species="nigracanthus">
<emphasis id="B910EA9B9C3AFF8854072ABEE099FF36" box="[563,744,223,248]" italics="true" pageId="10" pageNumber="361">E. nigracanthus</emphasis>
</taxonomicName>
, and grouped with a good statistical support with the former against the latter. Dr M. Elías-Gutiérrez, one of authors of the paper recorded above (Jeffrey
<emphasis id="B910EA9B9C3AFF8852F52B5AE685FED3" box="[1217,1268,260,285]" italics="true" pageId="10" pageNumber="361">et al</emphasis>
. 2011), kindly provided us with a material on the aforementioned wrongly identified taxon. But our morphologic study led to conclusion that these populations could be identified as
<taxonomicName id="4C644D0A9C3AFF8855302B12E1C6FEAB" box="[772,951,332,357]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="10" pageNumber="361" phylum="Arthropoda" rank="species" species="nigracanthus">
<emphasis id="B910EA9B9C3AFF8855302B12E1C6FEAB" box="[772,951,332,357]" italics="true" pageId="10" pageNumber="361">E. nigracanthus</emphasis>
</taxonomicName>
. Different hypotheses could be proposed to explain such controversy: (1) in reality,
<taxonomicName id="4C644D0A9C3AFF88546E2B2EE17FFE46" box="[602,782,367,392]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="10" pageNumber="361" phylum="Arthropoda" rank="species" species="nigracanthus">
<emphasis id="B910EA9B9C3AFF88546E2B2EE17FFE46" box="[602,782,367,392]" italics="true" pageId="10" pageNumber="361">E. nigracanthus</emphasis>
</taxonomicName>
is present in Churchill region, it was missed by Jeffrey
<emphasis id="B910EA9B9C3AFF8853BC2B2EE2DCFE63" italics="true" pageId="10" pageNumber="361">et al</emphasis>
(2011), and only these specimens were sent to us; (2) our &quot;
<taxonomicName id="4C644D0A9C3AFF8855652BCAE674FE63" box="[849,1029,404,429]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="10" pageNumber="361" phylum="Arthropoda" rank="species" species="nigracanthus">
<emphasis id="B910EA9B9C3AFF8855652BCAE674FE63" box="[849,1029,404,429]" italics="true" pageId="10" pageNumber="361">E. nigracanthus</emphasis>
</taxonomicName>
&quot; is in reality a specific undescribed species which could not be diagnosed based on morphological characters; (3) both Jeffrey
<emphasis id="B910EA9B9C3AFF8852BC2BE6E6C8FE1E" box="[1160,1209,439,464]" italics="true" pageId="10" pageNumber="361">et al</emphasis>
. (2011) and us dealt with a hybrid population of
<taxonomicName id="4C644D0A9C3AFF8857E62B82E0F5FE3B" box="[466,644,476,501]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="10" pageNumber="361" phylum="Arthropoda" rank="species" species="nigracanthus">
<emphasis id="B910EA9B9C3AFF8857E62B82E0F5FE3B" box="[466,644,476,501]" italics="true" pageId="10" pageNumber="361">E. nigracanthus</emphasis>
</taxonomicName>
x undescribed species which has a
<taxonomicName id="4C644D0A9C3AFF8852202B83E6D9FE3B" box="[1044,1192,476,501]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="10" pageNumber="361" phylum="Arthropoda" rank="species" species="nigracanthus">
<emphasis id="B910EA9B9C3AFF8852202B83E6D9FE3B" box="[1044,1192,476,501]" italics="true" pageId="10" pageNumber="361">nigracanthus</emphasis>
</taxonomicName>
-like morphology, but a non-
<taxonomicName id="4C644D0A9C3AFF8856E92BA0E300FDD6" box="[221,369,511,536]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="10" pageNumber="361" phylum="Arthropoda" rank="species" species="nigracanthus">
<emphasis id="B910EA9B9C3AFF8856E92BA0E300FDD6" box="[221,369,511,536]" italics="true" pageId="10" pageNumber="361">nigracanthus</emphasis>
</taxonomicName>
mitochondrial genome. This problem needs further investigation.
</paragraph>
</subSubSection>
</treatment>
</document>
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