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<document id="774ACFD8CEE741537B5D71F44BF52A08" 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="03CD879F9C37FF8A56A32B45E290FED3" 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 Hann 1990" docType="treatment" docVersion="8" lastPageNumber="359" 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="358" updateTime="1698366975285" updateUser="plazi">
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<mods:title id="8F63EBBA4FA8FE6C2F6838247DF5B234">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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<treatment id="03CD879F9C37FF8A56A32B45E290FED3" ID-DOI="http://doi.org/10.5281/zenodo.5631051" ID-GBIF-Taxon="123514191" ID-Zenodo-Dep="5631051" LSID="urn:lsid:plazi:treatment:03CD879F9C37FF8A56A32B45E290FED3" httpUri="http://treatment.plazi.org/id/03CD879F9C37FF8A56A32B45E290FED3" lastPageId="8" lastPageNumber="359" pageId="7" pageNumber="358">
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<paragraph id="8BDB36899C37FF8556A32B45E010FEFA" blockId="7.[151,609,282,342]" box="[151,609,282,308]" pageId="7" pageNumber="358">
<heading id="D09381E59C37FF8556A32B45E010FEFA" bold="true" box="[151,609,282,308]" fontSize="11" level="1" pageId="7" pageNumber="358" reason="1">
<taxonomicName id="4C644D0A9C37FF8556A32B45E010FEFA" ID-CoL="3D3KD" authority="Hann, 1990" authorityName="Hann" authorityYear="1990" box="[151,609,282,308]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="7" pageNumber="358" phylum="Arthropoda" rank="species" species="nigracanthus">
<emphasis id="B910EA9B9C37FF8556A32B45E010FEFA" bold="true" box="[151,609,282,308]" pageId="7" pageNumber="358">
<emphasis id="B910EA9B9C37FF8556A32B45E3BBFEFA" bold="true" box="[151,458,282,308]" italics="true" pageId="7" pageNumber="358">Eurycercus nigracanthus</emphasis>
<bibRefCitation id="EFF54B789C37FF8557E52B45E010FEFA" author="Hann" box="[465,609,282,308]" pageId="7" pageNumber="358" refString="Hann, B. J. (1990) Redescription of Eurycercus (Teretifrons) glacialis (Cladocera, Chydoridae) and description of a new species E. (T.) nigracanthus, from Newfoundland, Canada. Canadian Journal of Zoology, 68, 2146 - 2157. http: // dx. doi. org / 10.1139 / z 90 - 298" type="journal article" year="1990">Hann, 1990</bibRefCitation>
</emphasis>
</taxonomicName>
</heading>
</paragraph>
<paragraph id="8BDB36899C37FF8556A32B62E37BFE98" blockId="7.[151,609,282,342]" box="[151,266,317,342]" pageId="7" pageNumber="358">
(
<figureCitation id="135F2A0C9C37FF8556AB2B62E372FE98" box="[159,259,317,342]" captionStart-0="FIGURE 4" captionStart-1="FIGURE 5" captionStartId-0="8.[151,250,1837,1859]" captionStartId-1="9.[151,250,1617,1639]" captionTargetBox-0="[160,1428,376,1779]" captionTargetBox-1="[157,1430,228,1563]" captionTargetId-0="figure@8.[151,1436,365,1785]" captionTargetId-1="figure@9.[151,1436,217,1576]" captionTargetPageId-0="8" captionTargetPageId-1="9" captionText-0="FIGURE 4. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, lateral view. B, dorsal view. C, anterior view. D, head, lateral view. E F, head pores. G I, armature of antero-ventral, ventral and posterior valve margin. Scale bar denotes 1 mm for A D, 0.1 mm for E I." captionText-1="FIGURE 5. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, postabdomen. B, its distal portion. C, its basal portion. D, antenna I. E, antenna II. F, IDL of limb I. Scale bar denotes 1 mm for A; 0.1 mm for B F." httpUri-0="https://zenodo.org/record/267827/files/figure.png" httpUri-1="https://zenodo.org/record/267828/files/figure.png" pageId="7" pageNumber="358">Figs 45</figureCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="C37E65029C37FF8556A32BDFE091FE5A" box="[151,736,382,405]" pageId="7" pageNumber="358" type="description">
<paragraph id="8BDB36899C37FF8556A32BDFE091FE5A" blockId="7.[151,1138,382,435]" box="[151,736,382,405]" pageId="7" pageNumber="358">
<taxonomicName id="4C644D0A9C37FF8556A32BDFE3FDFE5A" authority="(Teretifrons)" baseAuthorityName="Teretifrons" box="[151,396,382,405]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="7" pageNumber="358" phylum="Arthropoda" rank="genus">
<emphasis id="B910EA9B9C37FF8556A32BDFE378FE5B" box="[151,265,384,405]" italics="true" pageId="7" pageNumber="358">Eurycercus</emphasis>
(
<emphasis id="B910EA9B9C37FF85572C2B21E3F5FE5A" box="[280,388,382,404]" italics="true" pageId="7" pageNumber="358">Teretifrons</emphasis>
)
</taxonomicName>
sp. in
<bibRefCitation id="EFF54B789C37FF8557E42B20E0E0FE5A" author="Frey" box="[464,657,382,404]" pageId="7" pageNumber="358" refString="Frey, D. G. &amp; Hann, B. J. (1985) Growth in Cladocera. Crustacean Issues, 2, 315 - 335." type="journal article" year="1985">Frey &amp; Hann 1985</bibRefCitation>
, P. 327.
</paragraph>
</subSubSection>
<subSubSection id="C37E65029C37FF8556A32BC1E603FE7D" box="[151,1138,413,435]" pageId="7" pageNumber="358" type="reference_group">
<paragraph id="8BDB36899C37FF8556A32BC1E603FE7D" blockId="7.[151,1138,382,435]" box="[151,1138,413,435]" pageId="7" pageNumber="358">
<taxonomicName id="4C644D0A9C37FF8556A32BC1E07FFE7D" ID-CoL="3D3KD" authority="Hann 1990" authorityName="Hann" authorityYear="1990" box="[151,526,413,435]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="7" pageNumber="358" phylum="Arthropoda" rank="species" species="nigracanthus">
<emphasis id="B910EA9B9C37FF8556A32BC1E3E4FE7D" box="[151,405,413,435]" italics="true" pageId="7" pageNumber="358">Eurycercus nigracanthus</emphasis>
<bibRefCitation id="EFF54B789C37FF8557AF2BC1E07FFE7D" author="Hann" box="[411,526,413,435]" pageId="7" pageNumber="358" refString="Hann, B. J. (1990) Redescription of Eurycercus (Teretifrons) glacialis (Cladocera, Chydoridae) and description of a new species E. (T.) nigracanthus, from Newfoundland, Canada. Canadian Journal of Zoology, 68, 2146 - 2157. http: // dx. doi. org / 10.1139 / z 90 - 298" type="journal article" year="1990">Hann 1990</bibRefCitation>
</taxonomicName>
, P. 2150, Figs 1640;
<bibRefCitation id="EFF54B789C37FF8554D92BC2E103FE7D" author="Bekker" box="[749,882,413,435]" pageId="7" pageNumber="358" 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 2012</bibRefCitation>
, P. 125130, Figs 4142.
</paragraph>
</subSubSection>
<subSubSection id="C37E65029C37FF8556A32B86E6E4FC0C" pageId="7" pageNumber="358" type="materials_examined">
<paragraph id="8BDB36899C37FF8556A32B86E124FDD8" blockId="7.[151,1436,473,2034]" pageId="7" pageNumber="358">
<materialsCitation id="3B0C3CD49C37FF8556A32B86E124FDD8" ID-GBIF-Occurrence="1290990189" country="Canada" county="Hann" location="Weiss Pond" municipality="Unfortunately" pageId="7" pageNumber="358" specimenCount="1" typeStatus="holotype">
<emphasis id="B910EA9B9C37FF8556A32B86E32CFE3C" bold="true" box="[151,349,473,498]" pageId="7" pageNumber="358">
<typeStatus id="54DF882B9C37FF8556A32B86E2A3FE3C" box="[151,210,473,498]" pageId="7" pageNumber="358">Type</typeStatus>
locality. “
</emphasis>
<location id="8EBB60529C37FF8557692B86E39DFE3C" LSID="urn:lsid:plazi:treatment:03CD879F9C37FF8A56A32B45E290FED3:8EBB60529C37FF8557692B86E39DFE3C" box="[349,492,473,498]" country="Canada" county="Hann" municipality="Unfortunately" name="Weiss Pond" pageId="7" pageNumber="358">Weiss Pond</location>
,
<location id="8EBB60529C37FF8554362B86E0A2FE3C" LSID="urn:lsid:plazi:treatment:03CD879F9C37FF8A56A32B45E290FED3:8EBB60529C37FF8554362B86E0A2FE3C" box="[514,723,473,498]" country="Canada" county="Hann" municipality="Unfortunately" name="Avalon Peninsula" pageId="7" pageNumber="358">Avalon Peninsula</location>
,
<location id="8EBB60529C37FF8554DC2B86E1E0FE3C" LSID="urn:lsid:plazi:treatment:03CD879F9C37FF8A56A32B45E290FED3:8EBB60529C37FF8554DC2B86E1E0FE3C" box="[744,913,473,498]" country="Canada" county="Hann" municipality="Unfortunately" name="Newfoundland" pageId="7" pageNumber="358">Newfoundland</location>
,
<collectingCountry id="F37376199C37FF8555922B86E18DFE3C" box="[934,1020,473,498]" name="Canada" pageId="7" pageNumber="358">Canada</collectingCountry>
” (
<bibRefCitation id="EFF54B789C37FF85522B2B86E6DBFE3F" author="Hann" box="[1055,1194,473,497]" pageId="7" pageNumber="358" refString="Hann, B. J. (1990) Redescription of Eurycercus (Teretifrons) glacialis (Cladocera, Chydoridae) and description of a new species E. (T.) nigracanthus, from Newfoundland, Canada. Canadian Journal of Zoology, 68, 2146 - 2157. http: // dx. doi. org / 10.1139 / z 90 - 298" type="journal article" year="1990">Hann 1990</bibRefCitation>
).
<collectingMunicipality id="6BBFACF39C37FF8552F32B86E714FE3C" box="[1223,1381,473,498]" pageId="7" pageNumber="358">Unfortunately</collectingMunicipality>
, the coordinates represented by
<bibRefCitation id="EFF54B789C37FF8557FE2BA1E029FDDB" author="Hann" box="[458,600,509,533]" pageId="7" pageNumber="358" refString="Hann, B. J. (1990) Redescription of Eurycercus (Teretifrons) glacialis (Cladocera, Chydoridae) and description of a new species E. (T.) nigracanthus, from Newfoundland, Canada. Canadian Journal of Zoology, 68, 2146 - 2157. http: // dx. doi. org / 10.1139 / z 90 - 298" type="journal article" year="1990">
<collectingCounty id="62BA4E059C37FF8557FE2BA1E076FDDB" box="[458,519,510,533]" pageId="7" pageNumber="358">Hann</collectingCounty>
(1990)
</bibRefCitation>
are apparently wrong.
</materialsCitation>
</paragraph>
<paragraph id="8BDB36899C37FF8556F3287FE1B1FDF7" blockId="7.[151,1436,473,2034]" box="[199,960,544,569]" pageId="7" pageNumber="358">
<emphasis id="B910EA9B9C37FF8556F3287FE39EFDF7" bold="true" box="[199,495,544,569]" pageId="7" pageNumber="358">Type material. Holotype.</emphasis>
Parthenogenetic female, USNM 243306.
</paragraph>
<paragraph id="8BDB36899C37FF8556F3281BE128FD4E" blockId="7.[151,1436,473,2034]" pageId="7" pageNumber="358">
<emphasis id="B910EA9B9C37FF8556F3281BE337FD93" bold="true" box="[199,326,580,605]" pageId="7" pageNumber="358">Paratypes.</emphasis>
2 adult males, USNM 243307. 2 juvenile males (instar II) USNM 243308. 2 juvenile males (instar I), USNM 243309. 2 parthenogenetic females, USNM 243310.
</paragraph>
<paragraph id="8BDB36899C37FF8556F328D3E6E4FC0C" blockId="7.[151,1436,473,2034]" pageId="7" pageNumber="358">
<materialsCitation id="3B0C3CD49C37FF8556F328D3E171FD22" ID-GBIF-Occurrence="1290990147" collectingDate="1984-08-28" collectorName="D. G. Frey &amp; Round Pond" country="Canada" county="Oxen Pond" latitude="47.7" location="Other" longLatPrecision="5568" longitude="-52.81" municipality="All" pageId="7" pageNumber="358" specimenCount="2" specimenCount-female="2" stateProvince="Newfoundland and Labrador">
<emphasis id="B910EA9B9C37FF8556F328D3E05EFD6B" bold="true" box="[199,559,652,677]" pageId="7" pageNumber="358">
<location id="8EBB60529C37FF8556F328D3E37EFD6B" LSID="urn:lsid:plazi:treatment:03CD879F9C37FF8A56A32B45E290FED3:8EBB60529C37FF8556F328D3E37EFD6B" box="[199,271,652,677]" country="Canada" county="Oxen Pond" latitude="47.7" longLatPrecision="5568" longitude="-52.81" municipality="All" name="Other" pageId="7" pageNumber="358" stateProvince="Newfoundland and Labrador">Other</location>
material examined here
</emphasis>
.
<emphasis id="B910EA9B9C37FF85540928D3E620FD6B" box="[573,1105,652,677]" italics="true" pageId="7" pageNumber="358">
<collectingMunicipality id="6BBFACF39C37FF85540928D3E02FFD6B" box="[573,606,652,677]" pageId="7" pageNumber="358">All</collectingMunicipality>
from
<collectingRegion id="49A0F86B9C37FF8554AB28D3E194FD6B" box="[671,997,652,677]" country="Canada" name="Newfoundland and Labrador" pageId="7" pageNumber="358">Newfoundland and Labrador</collectingRegion>
,
<collectingCountry id="F37376199C37FF8555C428D3E63DFD6B" box="[1008,1100,652,677]" name="Canada" pageId="7" pageNumber="358">Canada</collectingCountry>
:
</emphasis>
20 parthenogenetic
<specimenCount id="9D62FD009C37FF85530128D2E72EFD6A" box="[1333,1375,653,676]" pageId="7" pageNumber="358" type="female">♀♀</specimenCount>
from
<collectingCounty id="62BA4E059C37FF8556A328EFE367FD06" box="[151,278,687,712]" pageId="7" pageNumber="358">Oxen Pond</collectingCounty>
(appr.
<geoCoordinate id="EE50504E9C37FF85575328F0E394FD06" box="[359,485,687,712]" direction="north" orientation="latitude" pageId="7" pageNumber="358" precision="5" value="47.5713">N47.5713°</geoCoordinate>
,
<geoCoordinate id="EE50504E9C37FF8557C528F0E007FD06" box="[497,630,687,712]" direction="west" orientation="longitude" pageId="7" pageNumber="358" precision="5" value="-52.7623">W52.7623°</geoCoordinate>
), coll. in
<collectingDate id="EF9EE9A19C37FF8554D628EFE110FD06" box="[738,865,688,712]" pageId="7" pageNumber="358" value="1984-08-28">
<date id="FFDA10499C37FF8554D628EFE110FD06" box="[738,865,688,712]" pageId="7" pageNumber="358" value="1984-08-28">28.08.1984</date>
</collectingDate>
by
<collectorName id="2691535F9C37FF8555BA28EFE18FFD06" box="[910,1022,688,712]" pageId="7" pageNumber="358">D.G. Frey</collectorName>
, DGF 7051. 14 parthenogenetic
<specimenCount id="9D62FD009C37FF85534628EFE7EDFD09" box="[1394,1436,688,711]" pageId="7" pageNumber="358" type="female">♀♀</specimenCount>
from
<collectorName id="2691535F9C37FF8556ED288CE318FD22" box="[217,361,723,748]" pageId="7" pageNumber="358">Round Pond</collectorName>
(appr.
<geoCoordinate id="EE50504E9C37FF8557F4288BE062FD22" box="[448,531,724,748]" direction="north" orientation="latitude" pageId="7" pageNumber="358" precision="5555" value="47.7">N47.7°</geoCoordinate>
,
<geoCoordinate id="EE50504E9C37FF855417288CE0FDFD22" box="[547,652,723,748]" direction="west" orientation="longitude" pageId="7" pageNumber="358" precision="555" value="-52.81">W52.81°</geoCoordinate>
), N of St
</materialsCitation>
.
<materialsCitation id="3B0C3CD49C37FF855524288CE680FCB5" ID-GBIF-Occurrence="1290990179" collectingDate="1984-08-28" collectorName="D. G. Frey &amp; Pond &amp; Hgy &amp; Fen Pool &amp; East &amp; Hgy." country="Canada" latitude="47.6" location="St. Marys" longLatPrecision="6700" longitude="-52.7" pageId="7" pageNumber="358" specimenCount="3" specimenCount-female="3" stateProvince="Cape">
Johnes, coll. in
<collectingDate id="EF9EE9A19C37FF8555F8288BE63AFD22" box="[972,1099,724,748]" pageId="7" pageNumber="358" value="1984-08-28">
<date id="FFDA10499C37FF8555F8288BE63AFD22" box="[972,1099,724,748]" pageId="7" pageNumber="358" value="1984-08-28">28.08.1984</date>
</collectingDate>
by
<collectorName id="2691535F9C37FF855249288BE681FD22" box="[1149,1264,724,748]" pageId="7" pageNumber="358">D.G. Frey</collectorName>
, DGF 7055. 7 parthenogenetic
<specimenCount id="9D62FD009C37FF85576528A7E30AFCC1" box="[337,379,760,783]" pageId="7" pageNumber="358" type="female">♀♀</specimenCount>
from
<collectorName id="2691535F9C37FF8557F528A8E38AFCDE" box="[449,507,759,784]" pageId="7" pageNumber="358">Pond</collectorName>
along
<collectorName id="2691535F9C37FF85547D28A7E008FCDE" box="[585,633,760,784]" pageId="7" pageNumber="358">Hgy</collectorName>
1. (appr.
<geoCoordinate id="EE50504E9C37FF8554D228A8E136FCDE" box="[742,839,759,784]" direction="north" orientation="latitude" pageId="7" pageNumber="358" precision="555" value="47.36">N47.36°</geoCoordinate>
,
<geoCoordinate id="EE50504E9C37FF85556728A8E1CDFCDE" box="[851,956,759,784]" direction="west" orientation="longitude" pageId="7" pageNumber="358" precision="555" value="-53.05">W53.05°</geoCoordinate>
),
<quantity id="4C9C9B6C9C37FF8555E428A8E646FCDE" box="[976,1079,759,784]" metricMagnitude="3" metricUnit="m" metricValue="2.414016" pageId="7" pageNumber="358" unit="mi" value="1.5">1.5 miles</quantity>
S of Butterpot Provincial Park, coll. in 0 5.09.1984 by
<collectorName id="2691535F9C37FF8557A02944E073FCFA" box="[404,514,795,820]" pageId="7" pageNumber="358">D.G. Frey</collectorName>
, DGF 7109. 5 parthenogenetic
<specimenCount id="9D62FD009C37FF8555562943E1FDFCFD" box="[866,908,796,819]" pageId="7" pageNumber="358" type="female">♀♀</specimenCount>
from
<collectorName id="2691535F9C37FF8555E52943E647FCFA" box="[977,1078,795,820]" pageId="7" pageNumber="358">Fen Pool</collectorName>
(appr.
<geoCoordinate id="EE50504E9C37FF8552B02944E697FCFA" box="[1156,1254,795,820]" direction="north" orientation="latitude" pageId="7" pageNumber="358" precision="555" value="46.88">N46.88°</geoCoordinate>
,
<geoCoordinate id="EE50504E9C37FF8552C52944E728FCFA" box="[1265,1369,795,820]" direction="west" orientation="longitude" pageId="7" pageNumber="358" precision="555" value="-54.11">W54.11°</geoCoordinate>
),
<collectorName id="2691535F9C37FF8553582943E7EDFCFD" box="[1388,1436,796,819]" pageId="7" pageNumber="358">East</collectorName>
side of road from
<collectingRegion id="49A0F86B9C37FF8557562960E3EDFC99" box="[354,412,831,855]" country="South Africa" name="Western Cape" pageId="7" pageNumber="358">Cape</collectingRegion>
<location id="8EBB60529C37FF8557972960E07EFC99" LSID="urn:lsid:plazi:treatment:03CD879F9C37FF8A56A32B45E290FED3:8EBB60529C37FF8557972960E07EFC99" box="[419,527,831,855]" country="Canada" latitude="47.6" longLatPrecision="6700" longitude="-52.7" name="St. Marys" pageId="7" pageNumber="358" stateProvince="Cape">St. Marys</location>
to
<collectorName id="2691535F9C37FF8554012960E014FC99" box="[565,613,831,855]" pageId="7" pageNumber="358">Hgy</collectorName>
100, coll. in 11.091984 by
<collectorName id="2691535F9C37FF8555A82960E67DFC99" box="[924,1036,831,855]" pageId="7" pageNumber="358">D.G. Frey</collectorName>
, DGF 7135ab. 22 parthenogenetic
<specimenCount id="9D62FD009C37FF8556A3293CE2B0FCB4" box="[151,193,867,890]" pageId="7" pageNumber="358" type="female">♀♀</specimenCount>
from a water body (appr.
<geoCoordinate id="EE50504E9C37FF8557D0293DE046FCB5" box="[484,567,866,891]" direction="north" orientation="latitude" pageId="7" pageNumber="358" precision="5555" value="47.6">N47.6°</geoCoordinate>
,
<geoCoordinate id="EE50504E9C37FF855476293DE0EBFCB5" box="[578,666,866,891]" direction="west" orientation="longitude" pageId="7" pageNumber="358" precision="5555" value="-52.7">W52.7°</geoCoordinate>
) near
<collectorName id="2691535F9C37FF8554D4293CE167FCB5" box="[736,790,867,891]" pageId="7" pageNumber="358">Hgy.</collectorName>
1 opposite truck weighing station W of St
</materialsCitation>
. John's, coll. in 0 9.1984 by D.G. Frey, DGF 7167-
<date id="FFDA10499C37FF85540529D9E001FC51" box="[561,624,902,927]" pageId="7" pageNumber="358" value="1945-02">II. 45</date>
parthenogenetic ♀♀ from Pond-G (N49.4931°, W56.4655°), coll. in
<date id="FFDA10499C37FF8556A329F6E365FC0C" box="[151,276,937,962]" pageId="7" pageNumber="358" value="2005-06-30">30.06.2005</date>
by L.J. Hovind &amp; M. Faustova, DJT 20-115, AAK M-1177, and AAK M-0536.
</paragraph>
</subSubSection>
<subSubSection id="C37E65029C37FF8556F32992E29AF8D2" pageId="7" pageNumber="358" type="diagnosis">
<paragraph id="8BDB36899C37FF8556F32992E0DFF97F" blockId="7.[151,1436,473,2034]" pageId="7" pageNumber="358">
<emphasis id="B910EA9B9C37FF8556F32992E330FC28" bold="true" box="[199,321,973,998]" pageId="7" pageNumber="358">Diagnosis.</emphasis>
In lateral view body sub-ovoid (
<figureCitation id="135F2A0C9C37FF8554812992E088FC28" box="[693,761,973,998]" captionStart="FIGURE 4" captionStartId="8.[151,250,1837,1859]" captionTargetBox="[160,1428,376,1779]" captionTargetId="figure@8.[151,1436,365,1785]" captionTargetPageId="8" captionText="FIGURE 4. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, lateral view. B, dorsal view. C, anterior view. D, head, lateral view. E F, head pores. G I, armature of antero-ventral, ventral and posterior valve margin. Scale bar denotes 1 mm for A D, 0.1 mm for E I." httpUri="https://zenodo.org/record/267827/files/figure.png" pageId="7" pageNumber="358">Fig. 4</figureCitation>
A), maximum height of the body in its middle portion (BH/ BL= 0.640.74; VL/BL=0.800.89). In anterior of dorsal view, body not compressed laterally, median dorsal keel absent (
<figureCitation id="135F2A0C9C37FF8556DA2E4AE343FBE3" box="[238,306,1045,1070]" captionStart="FIGURE 4" captionStartId="8.[151,250,1837,1859]" captionTargetBox="[160,1428,376,1779]" captionTargetId="figure@8.[151,1436,365,1785]" captionTargetPageId="8" captionText="FIGURE 4. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, lateral view. B, dorsal view. C, anterior view. D, head, lateral view. E F, head pores. G I, armature of antero-ventral, ventral and posterior valve margin. Scale bar denotes 1 mm for A D, 0.1 mm for E I." httpUri="https://zenodo.org/record/267827/files/figure.png" pageId="7" pageNumber="358">Fig. 4</figureCitation>
BC). Rostrum relatively long (
<figureCitation id="135F2A0C9C37FF8554A22E4AE0A8FBE3" box="[662,729,1045,1070]" captionStart="FIGURE 4" captionStartId="8.[151,250,1837,1859]" captionTargetBox="[160,1428,376,1779]" captionTargetId="figure@8.[151,1436,365,1785]" captionTargetPageId="8" captionText="FIGURE 4. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, lateral view. B, dorsal view. C, anterior view. D, head, lateral view. E F, head pores. G I, armature of antero-ventral, ventral and posterior valve margin. Scale bar denotes 1 mm for A D, 0.1 mm for E I." httpUri="https://zenodo.org/record/267827/files/figure.png" pageId="7" pageNumber="358">Fig. 4</figureCitation>
D). Ocellus small. Dorsal head pores located on a pancake-like projection on dorsal margin of head and slightly protrude beyond the edge of the head shield (
<figureCitation id="135F2A0C9C37FF85529C2E67E69AFB9F" box="[1192,1259,1080,1105]" captionStart="FIGURE 4" captionStartId="8.[151,250,1837,1859]" captionTargetBox="[160,1428,376,1779]" captionTargetId="figure@8.[151,1436,365,1785]" captionTargetPageId="8" captionText="FIGURE 4. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, lateral view. B, dorsal view. C, anterior view. D, head, lateral view. E F, head pores. G I, armature of antero-ventral, ventral and posterior valve margin. Scale bar denotes 1 mm for A D, 0.1 mm for E I." httpUri="https://zenodo.org/record/267827/files/figure.png" pageId="7" pageNumber="358">Fig. 4</figureCitation>
E). Lateral head pores small and subcircular (
<figureCitation id="135F2A0C9C37FF8557ED2E03E06DFBBB" box="[473,540,1116,1141]" captionStart="FIGURE 4" captionStartId="8.[151,250,1837,1859]" captionTargetBox="[160,1428,376,1779]" captionTargetId="figure@8.[151,1436,365,1785]" captionTargetPageId="8" captionText="FIGURE 4. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, lateral view. B, dorsal view. C, anterior view. D, head, lateral view. E F, head pores. G I, armature of antero-ventral, ventral and posterior valve margin. Scale bar denotes 1 mm for A D, 0.1 mm for E I." httpUri="https://zenodo.org/record/267827/files/figure.png" pageId="7" pageNumber="358">Fig. 4</figureCitation>
F). Labrum with a large median keel, with angled apex, projecting beyond distal end of antenna I (
<figureCitation id="135F2A0C9C37FF8557692EDFE3D0FB56" box="[349,417,1152,1177]" captionStart="FIGURE 4" captionStartId="8.[151,250,1837,1859]" captionTargetBox="[160,1428,376,1779]" captionTargetId="figure@8.[151,1436,365,1785]" captionTargetPageId="8" captionText="FIGURE 4. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, lateral view. B, dorsal view. C, anterior view. D, head, lateral view. E F, head pores. G I, armature of antero-ventral, ventral and posterior valve margin. Scale bar denotes 1 mm for A D, 0.1 mm for E I." httpUri="https://zenodo.org/record/267827/files/figure.png" pageId="7" pageNumber="358">Fig. 4</figureCitation>
D). Armature of valve margin as in other species (
<figureCitation id="135F2A0C9C37FF8555E02EDFE666FB56" box="[980,1047,1152,1177]" captionStart="FIGURE 4" captionStartId="8.[151,250,1837,1859]" captionTargetBox="[160,1428,376,1779]" captionTargetId="figure@8.[151,1436,365,1785]" captionTargetPageId="8" captionText="FIGURE 4. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, lateral view. B, dorsal view. C, anterior view. D, head, lateral view. E F, head pores. G I, armature of antero-ventral, ventral and posterior valve margin. Scale bar denotes 1 mm for A D, 0.1 mm for E I." httpUri="https://zenodo.org/record/267827/files/figure.png" pageId="7" pageNumber="358">Fig. 4</figureCitation>
GI). Postabdomen large (PL/BL= 0.410.45), relatively broad (
<collectingCountry id="F37376199C37FF8557E82EFBE070FB72" box="[476,513,1188,1212]" name="Philippines" pageId="7" pageNumber="358">PH</collectingCountry>
/PL= 0.460.54) with almost parallel ventral and dorsal margin (
<figureCitation id="135F2A0C9C37FF8552E62EFBE762FB73" box="[1234,1299,1188,1213]" captionStart="FIGURE 5" captionStartId="9.[151,250,1617,1639]" captionTargetBox="[157,1430,228,1563]" captionTargetId="figure@9.[151,1436,217,1576]" captionTargetPageId="9" captionText="FIGURE 5. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, postabdomen. B, its distal portion. C, its basal portion. D, antenna I. E, antenna II. F, IDL of limb I. Scale bar denotes 1 mm for A; 0.1 mm for B F." httpUri="https://zenodo.org/record/267828/files/figure.png" pageId="7" pageNumber="358">Fig. 5</figureCitation>
A) and deep embayment (
<figureCitation id="135F2A0C9C37FF8557052E98E30CFB2E" box="[305,381,1223,1248]" captionStart="FIGURE 5" captionStartId="9.[151,250,1617,1639]" captionTargetBox="[157,1430,228,1563]" captionTargetId="figure@9.[151,1436,217,1576]" captionTargetPageId="9" captionText="FIGURE 5. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, postabdomen. B, its distal portion. C, its basal portion. D, antenna I. E, antenna II. F, IDL of limb I. Scale bar denotes 1 mm for A; 0.1 mm for B F." httpUri="https://zenodo.org/record/267828/files/figure.png" pageId="7" pageNumber="358">Fig. 5</figureCitation>
B). Preanal teeth more elongated, pointed (NT=118121), in most cases dark, strongly chitinized; rudimentary teeth up to bases of postabdominal setae (
<figureCitation id="135F2A0C9C37FF85554B2EB4E1B3FACA" box="[895,962,1259,1284]" captionStart="FIGURE 5" captionStartId="9.[151,250,1617,1639]" captionTargetBox="[157,1430,228,1563]" captionTargetId="figure@9.[151,1436,217,1576]" captionTargetPageId="9" captionText="FIGURE 5. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, postabdomen. B, its distal portion. C, its basal portion. D, antenna I. E, antenna II. F, IDL of limb I. Scale bar denotes 1 mm for A; 0.1 mm for B F." httpUri="https://zenodo.org/record/267828/files/figure.png" pageId="7" pageNumber="358">Fig. 5</figureCitation>
C). Teeth in distal part of postanal margin large, long, predominantly double (
<figureCitation id="135F2A0C9C37FF8554112F50E019FAE6" box="[549,616,1295,1320]" captionStart="FIGURE 5" captionStartId="9.[151,250,1617,1639]" captionTargetBox="[157,1430,228,1563]" captionTargetId="figure@9.[151,1436,217,1576]" captionTargetPageId="9" captionText="FIGURE 5. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, postabdomen. B, its distal portion. C, its basal portion. D, antenna I. E, antenna II. F, IDL of limb I. Scale bar denotes 1 mm for A; 0.1 mm for B F." httpUri="https://zenodo.org/record/267828/files/figure.png" pageId="7" pageNumber="358">Fig. 5</figureCitation>
B). Teeth in distal part of anal margin proximal part of postanal margin short, almost all of them single. Postabdominal claw relatively robust (CL/PL=0. 230.26) with two basal spines (DS/CL=0.280.30; BS/CL=0.11; BS/DS=0.400.50). Antenna I elongated (AL/BL=0.100.11; AL/DA=4.67 4.87); antennular sensory seta arising in antenna I distal part (
<figureCitation id="135F2A0C9C37FF8555622F25E1EBFA5D" box="[854,922,1402,1427]" captionStart="FIGURE 5" captionStartId="9.[151,250,1617,1639]" captionTargetBox="[157,1430,228,1563]" captionTargetId="figure@9.[151,1436,217,1576]" captionTargetPageId="9" captionText="FIGURE 5. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, postabdomen. B, its distal portion. C, its basal portion. D, antenna I. E, antenna II. F, IDL of limb I. Scale bar denotes 1 mm for A; 0.1 mm for B F." httpUri="https://zenodo.org/record/267828/files/figure.png" pageId="7" pageNumber="358">Fig. 5</figureCitation>
D). Numerous short rows of minute denticles encircling antennular surface. On antenna II spine situated on proximal segment of exopod equal in length or slightly longer than second segment (
<figureCitation id="135F2A0C9C37FF85547F2F9EE0E0FA14" box="[587,657,1473,1498]" captionStart="FIGURE 5" captionStartId="9.[151,250,1617,1639]" captionTargetBox="[157,1430,228,1563]" captionTargetId="figure@9.[151,1436,217,1576]" captionTargetPageId="9" captionText="FIGURE 5. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, postabdomen. B, its distal portion. C, its basal portion. D, antenna I. E, antenna II. F, IDL of limb I. Scale bar denotes 1 mm for A; 0.1 mm for B F." httpUri="https://zenodo.org/record/267828/files/figure.png" pageId="7" pageNumber="358">Fig. 5</figureCitation>
E). IDL of limb I supplied three bisegmented setae, one of them a relatively strong hook-like seta, its diameter at base equal or slightly more than diameter at base of longest setae IDL (
<figureCitation id="135F2A0C9C37FF8556E22C56E368F9EC" box="[214,281,1545,1570]" captionStart="FIGURE 5" captionStartId="9.[151,250,1617,1639]" captionTargetBox="[157,1430,228,1563]" captionTargetId="figure@9.[151,1436,217,1576]" captionTargetPageId="9" captionText="FIGURE 5. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, postabdomen. B, its distal portion. C, its basal portion. D, antenna I. E, antenna II. F, IDL of limb I. Scale bar denotes 1 mm for A; 0.1 mm for B F." httpUri="https://zenodo.org/record/267828/files/figure.png" pageId="7" pageNumber="358">Fig. 5</figureCitation>
F). The smallest of the three setae relatively short, its length two or more times less than longest setae IDL. IDL with groups of spinulae: 1012 long distal spinulae; 1115 long proximal spinulae and 710 very short basal spinulae; marginal spinulae absent (
<figureCitation id="135F2A0C9C37FF8554572C0FE0D5F9A7" box="[611,676,1616,1641]" captionStart="FIGURE 5" captionStartId="9.[151,250,1617,1639]" captionTargetBox="[157,1430,228,1563]" captionTargetId="figure@9.[151,1436,217,1576]" captionTargetPageId="9" captionText="FIGURE 5. Eurycercus nigracanthus, parthenogenetic female from Round Pond, N of St. Johnes, Newfoundland, Canada. A, postabdomen. B, its distal portion. C, its basal portion. D, antenna I. E, antenna II. F, IDL of limb I. Scale bar denotes 1 mm for A; 0.1 mm for B F." httpUri="https://zenodo.org/record/267828/files/figure.png" pageId="7" pageNumber="358">Fig. 5</figureCitation>
F). Eight setae in filter plate II, 10 setae in filter plate III; 910 setae in filter plate IV, 89 setae in filter plate V. Exopodite IV with 8 setae; exopodite V with 8 setae. Intestine with a double loop, posterior intestinal caecum absent.
</paragraph>
<paragraph id="8BDB36899C37FF8556F32CE3E29AF8D2" blockId="7.[151,1436,473,2034]" pageId="7" pageNumber="358">
<emphasis id="B910EA9B9C37FF8556F32CE3E02BF91B" bold="true" box="[199,602,1724,1749]" pageId="7" pageNumber="358">Ephippial female and ephippum.</emphasis>
Slight median keel on valves, whole valves are involved in ephippium formation. Ephippia in our fixed material were almost unpigmented additionally as compared with parthenogenetic female.
</paragraph>
</subSubSection>
<subSubSection id="C37E65029C37FF8556F32D78E197F83F" pageId="7" pageNumber="358" type="description">
<paragraph id="8BDB36899C37FF8556F32D78E1C2F88E" blockId="7.[151,1436,473,2034]" box="[199,947,1831,1856]" pageId="7" pageNumber="358">
<emphasis id="B910EA9B9C37FF8556F32D78E322F88E" bold="true" box="[199,339,1831,1856]" pageId="7" pageNumber="358">Adult male.</emphasis>
As in other species of the subgenus, see
<bibRefCitation id="EFF54B789C37FF8555292D77E1DEF88E" author="Hann" box="[797,943,1832,1856]" pageId="7" pageNumber="358" refString="Hann, B. J. (1990) Redescription of Eurycercus (Teretifrons) glacialis (Cladocera, Chydoridae) and description of a new species E. (T.) nigracanthus, from Newfoundland, Canada. Canadian Journal of Zoology, 68, 2146 - 2157. http: // dx. doi. org / 10.1139 / z 90 - 298" type="journal article" year="1990">Hann (1990)</bibRefCitation>
.
</paragraph>
<paragraph id="8BDB36899C37FF8556F32D14E645F849" blockId="7.[151,1436,473,2034]" pageId="7" pageNumber="358">
<emphasis id="B910EA9B9C37FF8556F32D14E28FF8AA" bold="true" box="[199,254,1867,1892]" pageId="7" pageNumber="358">Size.</emphasis>
Juvenile and adult parthenogenetic females in our material
<quantity id="4C9C9B6C9C37FF85559A2D14E64BF8AD" box="[942,1082,1867,1892]" metricMagnitude="-3" metricUnit="m" metricValue="3.4" metricValueMax="4.5" metricValueMin="2.3" pageId="7" pageNumber="358" unit="mm" value="3.4" valueMax="4.5" valueMin="2.3">2.34.5 mm</quantity>
. Juvenile females
<quantity id="4C9C9B6C9C37FF8553392D14E7E9F8AD" box="[1293,1432,1867,1891]" metricMagnitude="-3" metricUnit="m" metricValue="2.2" metricValueMax="3.2" metricValueMin="1.2" pageId="7" pageNumber="358" unit="mm" value="2.2" valueMax="3.2" valueMin="1.2">1.23.2 mm</quantity>
, adult parthenogenetic females
<quantity id="4C9C9B6C9C37FF8557DA2D31E006F848" box="[494,631,1902,1927]" metricMagnitude="-3" metricUnit="m" metricValue="4.75" metricValueMax="5.8" metricValueMin="3.7" pageId="7" pageNumber="358" unit="mm" value="4.75" valueMax="5.8" valueMin="3.7">3.75.8 mm</quantity>
, adult males
<quantity id="4C9C9B6C9C37FF85553E2D30E1E0F848" box="[778,913,1903,1927]" metricMagnitude="-3" metricUnit="m" metricValue="1.95" metricValueMax="2.1" metricValueMin="1.8" pageId="7" pageNumber="358" unit="mm" value="1.95" valueMax="2.1" valueMin="1.8">1.82.1 mm</quantity>
(
<bibRefCitation id="EFF54B789C37FF8555AB2D30E659F849" author="Hann" box="[927,1064,1903,1927]" pageId="7" pageNumber="358" refString="Hann, B. J. (1990) Redescription of Eurycercus (Teretifrons) glacialis (Cladocera, Chydoridae) and description of a new species E. (T.) nigracanthus, from Newfoundland, Canada. Canadian Journal of Zoology, 68, 2146 - 2157. http: // dx. doi. org / 10.1139 / z 90 - 298" type="journal article" year="1990">Hann, 1990</bibRefCitation>
).
</paragraph>
<paragraph id="8BDB36899C37FF8556F32DCDE197F83F" blockId="7.[151,1436,473,2034]" pageId="7" pageNumber="358">
<emphasis id="B910EA9B9C37FF8556F32DCDE3B6F865" bold="true" box="[199,455,1938,1963]" pageId="7" pageNumber="358">Differential diagnisis.</emphasis>
Among the species of
<taxonomicName id="4C644D0A9C37FF8554F22DCCE1A6F865" authority="(Teretifrons)" baseAuthorityName="Teretifrons" box="[710,983,1939,1963]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="7" pageNumber="358" phylum="Arthropoda" rank="genus">
<emphasis id="B910EA9B9C37FF8554F22DCCE135F864" box="[710,836,1939,1962]" italics="true" pageId="7" pageNumber="358">Eurycercus</emphasis>
(
<emphasis id="B910EA9B9C37FF8555602DCCE1BDF865" box="[852,972,1939,1963]" italics="true" pageId="7" pageNumber="358">Teretifrons</emphasis>
)
</taxonomicName>
,
<taxonomicName id="4C644D0A9C37FF8555D02DCCE6E7F865" box="[996,1174,1938,1963]" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="7" pageNumber="358" phylum="Arthropoda" rank="species" species="nigracanthus">
<emphasis id="B910EA9B9C37FF8555D02DCCE6E7F865" box="[996,1174,1938,1963]" italics="true" pageId="7" pageNumber="358">E. nigracanthus</emphasis>
</taxonomicName>
is unique having a ring of major head pore projects above head shield, but no projection in middle of major head pore. In contrast to
<taxonomicName id="4C644D0A9C37FF8553B02DE8E288F83C" class="Branchiopoda" family="Eurycercidae" genus="Eurycercus" kingdom="Animalia" order="Diplostraca" pageId="7" pageNumber="358" phylum="Arthropoda" rank="species" species="chernovi" status="sp. nov.">
<emphasis id="B910EA9B9C37FF8553B02DE8E288F83C" italics="true" pageId="7" pageNumber="358">E. chernovi</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A22357E09C37FF8557342D85E320F83F" box="[256,337,2010,2033]" pageId="7" pageNumber="358" rank="species">sp.nov.</taxonomicNameLabel>
, it has 10 setae in exopodite IV and 8 setae in exopodite V.
</paragraph>
</subSubSection>
<subSubSection id="C37E65029C38FF8A56F32AC8E290FED3" pageId="8" pageNumber="359" type="distribution">
<paragraph id="8BDB36899C38FF8A56F32AC8E290FED3" blockId="8.[151,1437,151,285]" pageId="8" pageNumber="359">
<emphasis id="B910EA9B9C38FF8A56F32AC8E311FF7E" bold="true" box="[199,352,151,176]" pageId="8" pageNumber="359">Distribution.</emphasis>
It is found in Labrador and Newfoundland,
<collectingRegion id="49A0F86B9C38FF8A55682AC7E1E7FF7E" box="[860,918,152,176]" country="South Africa" name="Western Cape" pageId="8" pageNumber="359">Cape</collectingRegion>
Breton
<collectingCountry id="F37376199C38FF8A55C72AC8E646FF7E" box="[1011,1079,151,176]" name="Iceland" pageId="8" pageNumber="359">Island</collectingCountry>
and
<collectingRegion id="49A0F86B9C38FF8A52452AC7E68CFF7E" box="[1137,1277,151,176]" country="Canada" name="Nova Scotia" pageId="8" pageNumber="359">Nova Scotia</collectingRegion>
(
<bibRefCitation id="EFF54B789C38FF8A53392AC7E7E1FF7E" author="Hann" box="[1293,1424,152,176]" pageId="8" pageNumber="359" refString="Hann, B. J. (1990) Redescription of Eurycercus (Teretifrons) glacialis (Cladocera, Chydoridae) and description of a new species E. (T.) nigracanthus, from Newfoundland, Canada. Canadian Journal of Zoology, 68, 2146 - 2157. http: // dx. doi. org / 10.1139 / z 90 - 298" type="journal article" year="1990">Hann 1990</bibRefCitation>
). But a real range of its distribution in North America is not clear, i.e. see below.
<emphasis id="B910EA9B9C38FF8A56F32A80E33EFF36" bold="true" box="[199,335,223,248]" pageId="8" pageNumber="359">Comments.</emphasis>
The species was adequately described by
<bibRefCitation id="EFF54B789C38FF8A550B2ABFE1A1FF36" author="Hann" box="[831,976,224,248]" pageId="8" pageNumber="359" refString="Hann, B. J. (1990) Redescription of Eurycercus (Teretifrons) glacialis (Cladocera, Chydoridae) and description of a new species E. (T.) nigracanthus, from Newfoundland, Canada. Canadian Journal of Zoology, 68, 2146 - 2157. http: // dx. doi. org / 10.1139 / z 90 - 298" type="journal article" year="1990">Hann (1990)</bibRefCitation>
except few details which are discussed below.
</paragraph>
</subSubSection>
</treatment>
</document>