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<document id="E5620A30176A15F60519879666463E47" ID-DOI="10.11646/zootaxa.5497.3.4" ID-ISSN="1175-5326" ID-Zenodo-Dep="13618713" ID-ZooBank="BFEC2071-EFCF-4489-93AD-18F3B0DCDBC6" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1725026604093" checkinUser="plazi" docAuthor="Tiunova, Tatiana M." docDate="2024" docId="970A878DFFAC0E15FF22FC86C92DFA1F" docLanguage="en" docName="zootaxa.5497.3.4.pdf" docOrigin="Zootaxa 5497 (3)" docSource="http://dx.doi.org/10.11646/zootaxa.5497.3.4" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Ephemera (Ephemera) transbajkalica Tshernova 1973" docType="treatment" docVersion="2" lastPageNumber="387" masterDocId="6B33FFF5FFAA0E13FFB5FFDDCC65FF9F" masterDocTitle="Egg morphology of six East Palaearctic species of the genus Ephemera Linnaeus (Ephemeroptera: Ephemeridae)" masterLastPageNumber="399" masterPageNumber="381" pageNumber="387" updateTime="1725028614181" updateUser="ExternalLinkService" zenodo-license-document="CLOSED">
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<mods:title id="BDD3C35EBC1F625DB247D40AD8C89CFA">Egg morphology of six East Palaearctic species of the genus Ephemera Linnaeus (Ephemeroptera: Ephemeridae)</mods:title>
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<treatment id="970A878DFFAC0E15FF22FC86C92DFA1F" ID-DOI="http://doi.org/10.5281/zenodo.13618924" ID-Zenodo-Dep="13618924" LSID="urn:lsid:plazi:treatment:970A878DFFAC0E15FF22FC86C92DFA1F" httpUri="http://treatment.plazi.org/id/970A878DFFAC0E15FF22FC86C92DFA1F" lastPageNumber="387" pageId="6" pageNumber="387">
<subSubSection id="57B96510FFAC0E15FF22FC86CF50FCEA" box="[151,821,859,886]" pageId="6" pageNumber="387" type="nomenclature">
<paragraph id="1F1C369BFFAC0E15FF22FC86CF50FCEA" blockId="6.[151,821,859,922]" box="[151,821,859,886]" pageId="6" pageNumber="387">
<heading id="445481F7FFAC0E15FF22FC86CF50FCEA" bold="true" box="[151,821,859,886]" fontSize="11" level="1" pageId="6" pageNumber="387" reason="1">
<taxonomicName id="D8A34D18FFAC0E15FF22FC86CF50FCEA" ID-CoL="6FP9P" authority="Tshernova, 1973" authorityName="Tshernova" authorityYear="1973" box="[151,821,859,886]" class="Insecta" family="Ephemeridae" genus="Ephemera" kingdom="Animalia" order="Ephemeroptera" pageId="6" pageNumber="387" phylum="Arthropoda" rank="species" species="transbajkalica" subGenus="Ephemera">
<emphasis id="2DD7EA89FFAC0E15FF22FC86CF50FCEA" bold="true" box="[151,821,859,886]" pageId="6" pageNumber="387">
<emphasis id="2DD7EA89FFAC0E15FF22FC86CD71FCE9" bold="true" box="[151,276,859,886]" italics="true" pageId="6" pageNumber="387">Ephemera</emphasis>
(
<emphasis id="2DD7EA89FFAC0E15FE93FC86CDC6FCE9" bold="true" box="[294,419,859,886]" italics="true" pageId="6" pageNumber="387">Ephemera</emphasis>
)
<emphasis id="2DD7EA89FFAC0E15FE01FC86CE04FCE9" bold="true" box="[436,609,859,886]" italics="true" pageId="6" pageNumber="387">transbajkalica</emphasis>
<bibRefCitation id="7B324B6AFFAC0E15FDDDFC86CF50FCEA" author="Tshernova, O. A." box="[616,821,859,885]" pageId="6" pageNumber="387" pagination="324 - 339" refId="ref7491" refString="Tshernova, O. A. (1973) Palearctic mayfly species of the genus Ephemera (Ephemeroptera, Ephemeridae). Revue d'Entomologie de l'URSS, 52 (2), 324 - 339." type="journal article" year="1973">Tshernova, 1973</bibRefCitation>
</emphasis>
</taxonomicName>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="57B96510FFAC0E15FF22FC5DCD5DFC05" box="[151,312,896,922]" pageId="6" pageNumber="387" type="description">
<paragraph id="1F1C369BFFAC0E15FF22FC5DCD5DFC05" blockId="6.[151,821,859,922]" box="[151,312,896,922]" pageId="6" pageNumber="387">
<figureCitation id="87982A1EFFAC0E15FF22FC5DCD5DFC05" box="[151,312,896,922]" captionStart-0="FIGURES 1619" captionStart-1="FIGURES 2023" captionStartId-0="7.[151,264,1943,1967]" captionStartId-1="8.[151,264,1905,1929]" captionTargetBox-0="[219,1369,181,1919]" captionTargetBox-1="[287,1299,151,1889]" captionTargetId-0="figure-16@7.[219,1369,181,1919]" captionTargetId-1="figure-18@8.[287,1299,151,1889]" captionTargetPageId-0="7" captionTargetPageId-1="8" captionText-0="FIGURES 1619. Egg morphology of Ephemera (Ephemera) transbajkalica: 1617, general shape; 1819, micropyle in the complex extrachorion-adhesive layer. AL-Ex—complex adhesive-extrachorion layer; CM—canal micropylar; mp—micropyle; SG—sperm guide." captionText-1="FIGURES 2023. Egg morphology of Ephemera (Ephemera) transbajkalica: 20, egg surface without complex extrachorionadhesive layer; 21, thickness on the layer forming the eggshell; 22, proximal part of micropylar canal on chorion surface; 23, chorionic sculpturing. AL-Ex—complex adhesive-extrachorion layer; CS—chorion surface; MO—micropylar opening; mp—micropyle." figureDoi-0="http://doi.org/10.5281/zenodo.13618728" figureDoi-1="http://doi.org/10.5281/zenodo.13618734" httpUri-0="https://zenodo.org/record/13618728/files/figure.png" httpUri-1="https://zenodo.org/record/13618734/files/figure.png" pageId="6" pageNumber="387">Figures 1623</figureCitation>
</paragraph>
</subSubSection>
<subSubSection id="57B96510FFAC0E15FF22FC16CF29FBAF" pageId="6" pageNumber="387" type="materials_examined">
<paragraph id="1F1C369BFFAC0E15FF22FC16CF29FBAF" blockId="6.[151,1436,971,1408]" pageId="6" pageNumber="387">
<emphasis id="2DD7EA89FFAC0E15FF22FC16CD1CFC7A" bold="true" box="[151,377,971,997]" pageId="6" pageNumber="387">Material examined</emphasis>
.
<materialsCitation id="AFCB3CC6FFAC0E15FE32FC16CEC4FB95" collectingDate="2004-06-16" collectionCode="T" country="Russia" county="Selemdzha River" location="Nora River" municipality="Burunda River" pageId="6" pageNumber="387" specimenCount="2" specimenCount-female="2" stateProvince="Amur">
<collectingCountry id="67B4760BFFAC0E15FE32FC16CDB3FC7A" box="[391,470,971,997]" name="Russia" pageId="6" pageNumber="387">Russia</collectingCountry>
:
<collectingRegion id="DD67F879FFAC0E15FE6AFC16CE16FC7A" box="[479,627,971,997]" country="Russia" name="Amur" pageId="6" pageNumber="387">Amur Oblast</collectingRegion>
,
<collectingCounty id="F67D4E17FFAC0E15FDCBFC16CF58FC7A" box="[638,829,971,997]" pageId="6" pageNumber="387">Selemdzha River</collectingCounty>
basin,
<collectingMunicipality id="FF78ACE1FFAC0E15FC38FC16C851FC7A" box="[909,1076,971,997]" pageId="6" pageNumber="387">Burunda River</collectingMunicipality>
, mouth, tributary of
<location id="1A7C6040FFAC0E15FAACFC11C9FDFC7A" LSID="urn:lsid:plazi:treatment:970A878DFFAC0E15FF22FC86C92DFA1F:1A7C6040FFAC0E15FAACFC11C9FDFC7A" box="[1305,1432,971,998]" country="Russia" county="Selemdzha River" municipality="Burunda River" name="Nora River" pageId="6" pageNumber="387" stateProvince="Amur">Nora River</location>
,
<date id="6B1D105BFFAC0E15FF22FC2DCD7DFB95" box="[151,280,1008,1034]" pageId="6" pageNumber="387" value="2004-06-16">
<collectingDate id="7B59E9B3FFAC0E15FF22FC2DCD7DFB95" box="[151,280,1008,1034]" pageId="6" pageNumber="387" value="2004-06-16">16.06.2004</collectingDate>
</date>
,
<specimenCount id="09A5FD12FFAC0E15FE97FC2CCD20FB94" box="[290,325,1009,1035]" count="2" pageId="6" pageNumber="387" type="female">2♀</specimenCount>
adults,
<collectionCode id="79B2AE5EFFAC0E15FE2FFC2CCDC9FB94" box="[410,428,1009,1035]" name="Tavera, Department of Geology and Geophysics" pageId="6" pageNumber="387">T</collectionCode>
. Tiunova; Republic of
</materialsCitation>
<materialsCitation id="AFCB3CC6FFAC0E15FD12FC2DCF2DFBAF" collectingDate="2006-01-08" collectionCode="T" country="Russia" county="Aldan River" location="Ungrinsky reserve" municipality="Ungra River" pageId="6" pageNumber="387" specimenCount="2" specimenCount-female="2" stateProvince="Sakha">
<collectingRegion id="DD67F879FFAC0E15FD12FC2DCE8EFB95" box="[679,747,1008,1034]" country="Russia" name="Sakha" pageId="6" pageNumber="387">Sakha</collectingRegion>
(Yakutia),
<collectingCounty id="F67D4E17FFAC0E15FCD0FC2DCF8BFB95" box="[869,1006,1008,1034]" pageId="6" pageNumber="387">Aldan River</collectingCounty>
basin,
<collectingMunicipality id="FF78ACE1FFAC0E15FB89FC2CC8A2FB95" box="[1084,1223,1008,1035]" pageId="6" pageNumber="387">Ungra River</collectingMunicipality>
, base of
<location id="1A7C6040FFAC0E15FA93FC2DCC8DFBAF" LSID="urn:lsid:plazi:treatment:970A878DFFAC0E15FF22FC86C92DFA1F:1A7C6040FFAC0E15FA93FC2DCC8DFBAF" country="Russia" county="Aldan River" municipality="Ungra River" name="Ungrinsky reserve" pageId="6" pageNumber="387" stateProvince="Sakha">Ungrinsky reserve</location>
“Yukhta,”
<date id="6B1D105BFFAC0E15FED0FBCBCD83FBAF" box="[357,486,1046,1072]" pageId="6" pageNumber="387" value="2006-01-08">
<collectingDate id="7B59E9B3FFAC0E15FED0FBCBCD83FBAF" box="[357,486,1046,1072]" pageId="6" pageNumber="387" value="2006-01-08">01.08.2006</collectingDate>
</date>
,
<specimenCount id="09A5FD12FFAC0E15FE44FBCBCE71FBAF" box="[497,532,1046,1072]" count="2" pageId="6" pageNumber="387" type="female">2♀</specimenCount>
adults (reared),
<collectionCode id="79B2AE5EFFAC0E15FD7EFBCBCEB8FBAF" box="[715,733,1046,1072]" name="Tavera, Department of Geology and Geophysics" pageId="6" pageNumber="387">T</collectionCode>
. Tiunova
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="57B96510FFAC0E15FF72FBE6C92DFA1F" pageId="6" pageNumber="387" type="distribution">
<paragraph id="1F1C369BFFAC0E15FF72FBE6CF42FBCA" blockId="6.[151,1436,971,1408]" box="[199,807,1083,1110]" pageId="6" pageNumber="387">
<emphasis id="2DD7EA89FFAC0E15FF72FBE6CD3FFBC9" bold="true" box="[199,346,1083,1110]" italics="true" pageId="6" pageNumber="387">Distribution.</emphasis>
East Siberia, Far East
<collectingCountry id="67B4760BFFAC0E15FDECFBE6CEC2FBCA" box="[601,679,1083,1109]" name="Russia" pageId="6" pageNumber="387">Russia</collectingCountry>
,
<collectingCountry id="67B4760BFFAC0E15FD07FBE6CF46FBCA" box="[690,803,1083,1109]" name="Mongolia" pageId="6" pageNumber="387">Mongolia</collectingCountry>
.
</paragraph>
<paragraph id="1F1C369BFFAC0E15FF72FBBDC92DFA1F" blockId="6.[151,1436,971,1408]" pageId="6" pageNumber="387">
The egg is oval-shaped (
<figureCitation id="87982A1EFFAC0E15FE6CFBBDCE39FBE5" box="[473,604,1120,1146]" captionStart="FIGURES 1619" captionStartId="7.[151,264,1943,1967]" captionTargetBox="[219,1369,181,1919]" captionTargetId="figure-16@7.[219,1369,181,1919]" captionTargetPageId="7" captionText="FIGURES 1619. Egg morphology of Ephemera (Ephemera) transbajkalica: 1617, general shape; 1819, micropyle in the complex extrachorion-adhesive layer. AL-Ex—complex adhesive-extrachorion layer; CM—canal micropylar; mp—micropyle; SG—sperm guide." figureDoi="http://doi.org/10.5281/zenodo.13618728" httpUri="https://zenodo.org/record/13618728/files/figure.png" pageId="6" pageNumber="387">Figs 1617</figureCitation>
). Dimensions: 220.0226.0 µm in length (220.8 µm) and 123.0129.0 µm in width (124.6 µm). The thickness of the extrachorion-adhesive layer is 1.31.7 µm (
<figureCitation id="87982A1EFFAC0E15FBF0FB5BC8A1FB3F" box="[1093,1220,1158,1184]" captionStart="FIGURES 2023" captionStartId="8.[151,264,1905,1929]" captionTargetBox="[287,1299,151,1889]" captionTargetId="figure-18@8.[287,1299,151,1889]" captionTargetPageId="8" captionText="FIGURES 2023. Egg morphology of Ephemera (Ephemera) transbajkalica: 20, egg surface without complex extrachorionadhesive layer; 21, thickness on the layer forming the eggshell; 22, proximal part of micropylar canal on chorion surface; 23, chorionic sculpturing. AL-Ex—complex adhesive-extrachorion layer; CS—chorion surface; MO—micropylar opening; mp—micropyle." figureDoi="http://doi.org/10.5281/zenodo.13618734" httpUri="https://zenodo.org/record/13618734/files/figure.png" pageId="6" pageNumber="387">Figs 21, 23</figureCitation>
). The surface of the adhesive layer is slightly roughened; almost smooth (
<figureCitation id="87982A1EFFAC0E15FD53FB76CF03FB5A" box="[742,870,1195,1221]" captionStart="FIGURES 1619" captionStartId="7.[151,264,1943,1967]" captionTargetBox="[219,1369,181,1919]" captionTargetId="figure-16@7.[219,1369,181,1919]" captionTargetPageId="7" captionText="FIGURES 1619. Egg morphology of Ephemera (Ephemera) transbajkalica: 1617, general shape; 1819, micropyle in the complex extrachorion-adhesive layer. AL-Ex—complex adhesive-extrachorion layer; CM—canal micropylar; mp—micropyle; SG—sperm guide." figureDoi="http://doi.org/10.5281/zenodo.13618728" httpUri="https://zenodo.org/record/13618728/files/figure.png" pageId="6" pageNumber="387">Figs 16, 18</figureCitation>
). There are one or two micropyles in the equatorial area (
<figureCitation id="87982A1EFFAC0E15FF60FB0DCD35FB75" box="[213,336,1232,1258]" captionStart="FIGURES 1619" captionStartId="7.[151,264,1943,1967]" captionTargetBox="[219,1369,181,1919]" captionTargetId="figure-16@7.[219,1369,181,1919]" captionTargetPageId="7" captionText="FIGURES 1619. Egg morphology of Ephemera (Ephemera) transbajkalica: 1617, general shape; 1819, micropyle in the complex extrachorion-adhesive layer. AL-Ex—complex adhesive-extrachorion layer; CM—canal micropylar; mp—micropyle; SG—sperm guide." figureDoi="http://doi.org/10.5281/zenodo.13618728" httpUri="https://zenodo.org/record/13618728/files/figure.png" pageId="6" pageNumber="387">Figs1617</figureCitation>
); micropyles are “tagenoform-type”; sperm guide well expressed (10.019.6 µm long, 4.27.2 µm wide), elongated, oval, with pointed distal margin, not deep (
<figureCitation id="87982A1EFFAC0E15FCFDFB2BCFA9FA8F" box="[840,972,1270,1296]" captionStart="FIGURES 1619" captionStartId="7.[151,264,1943,1967]" captionTargetBox="[219,1369,181,1919]" captionTargetId="figure-16@7.[219,1369,181,1919]" captionTargetPageId="7" captionText="FIGURES 1619. Egg morphology of Ephemera (Ephemera) transbajkalica: 1617, general shape; 1819, micropyle in the complex extrachorion-adhesive layer. AL-Ex—complex adhesive-extrachorion layer; CM—canal micropylar; mp—micropyle; SG—sperm guide." figureDoi="http://doi.org/10.5281/zenodo.13618728" httpUri="https://zenodo.org/record/13618728/files/figure.png" pageId="6" pageNumber="387">Figs 1819</figureCitation>
). Micropylar canal: 4.06.0 µm long and 2.37.1 µm wide; weakly protrudes above the adhesive layer (
<figureCitation id="87982A1EFFAC0E15FCFBFAC6CFB5FAAA" box="[846,976,1307,1333]" captionStart="FIGURES 1619" captionStartId="7.[151,264,1943,1967]" captionTargetBox="[219,1369,181,1919]" captionTargetId="figure-16@7.[219,1369,181,1919]" captionTargetPageId="7" captionText="FIGURES 1619. Egg morphology of Ephemera (Ephemera) transbajkalica: 1617, general shape; 1819, micropyle in the complex extrachorion-adhesive layer. AL-Ex—complex adhesive-extrachorion layer; CM—canal micropylar; mp—micropyle; SG—sperm guide." figureDoi="http://doi.org/10.5281/zenodo.13618728" httpUri="https://zenodo.org/record/13618728/files/figure.png" pageId="6" pageNumber="387">Figs 16, 18</figureCitation>
). The chorionic surface is covered by the regular mesh units penta- or hexagonal cells, each with a flat, almost smooth bottom and a convex protuberance in the middle (
<figureCitation id="87982A1EFFAC0E15FEA8FABBCD17FA1F" box="[285,370,1382,1408]" captionStart="FIGURES 2023" captionStartId="8.[151,264,1905,1929]" captionTargetBox="[287,1299,151,1889]" captionTargetId="figure-18@8.[287,1299,151,1889]" captionTargetPageId="8" captionText="FIGURES 2023. Egg morphology of Ephemera (Ephemera) transbajkalica: 20, egg surface without complex extrachorionadhesive layer; 21, thickness on the layer forming the eggshell; 22, proximal part of micropylar canal on chorion surface; 23, chorionic sculpturing. AL-Ex—complex adhesive-extrachorion layer; CS—chorion surface; MO—micropylar opening; mp—micropyle." figureDoi="http://doi.org/10.5281/zenodo.13618734" httpUri="https://zenodo.org/record/13618734/files/figure.png" pageId="6" pageNumber="387">Fig. 23</figureCitation>
). The proximal part of the micropylar opening elevates above the chorion (
<figureCitation id="87982A1EFFAC0E15FB0CFABBC959FA1F" box="[1209,1340,1382,1408]" captionStart="FIGURES 2023" captionStartId="8.[151,264,1905,1929]" captionTargetBox="[287,1299,151,1889]" captionTargetId="figure-18@8.[287,1299,151,1889]" captionTargetPageId="8" captionText="FIGURES 2023. Egg morphology of Ephemera (Ephemera) transbajkalica: 20, egg surface without complex extrachorionadhesive layer; 21, thickness on the layer forming the eggshell; 22, proximal part of micropylar canal on chorion surface; 23, chorionic sculpturing. AL-Ex—complex adhesive-extrachorion layer; CS—chorion surface; MO—micropylar opening; mp—micropyle." figureDoi="http://doi.org/10.5281/zenodo.13618734" httpUri="https://zenodo.org/record/13618734/files/figure.png" pageId="6" pageNumber="387">Figs 20, 22</figureCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>