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<document id="1E6ACB29DC0A657775C52DE626F74840" ID-DOI="10.11646/phytotaxa.247.3.1" ID-ISSN="1179-3163" ID-Zenodo-Dep="13675639" IM.bibliography_approvedBy="felipe" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="GgImagineBatch" IM.taxonomicNames_approvedBy="felipe" IM.treatmentCitations_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1725406663808" checkinUser="felipe" docAuthor="Kaštovský, Jan, Veselá, Jana, Bohunická, Markéta, Fučíková, Karolina, Štenclová, Lenka &amp; Brewer-Carías, Charles" docDate="2016" docId="C04387E2C518FA75F9E6F923FF0B49CA" docLanguage="en" docName="phytotaxa.247.3.1.pdf" docOrigin="Phytotaxa 247 (3)" docSource="http://dx.doi.org/10.11646/phytotaxa.247.3.1" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Eunotia churiensis Vesela, Bohunicka &amp; Kastovsky 2016, sp. nov." docType="treatment" docVersion="2" lastPageNumber="161" masterDocId="3C7AFF9AC51FFA7DF96EFFF8FFFF4F08" masterDocTitle="New and unusual species of cyanobacteria, diatoms and green algae, with a description of a new genus Ekerewekia gen. nov. (Chlorophyta) from the table mountain Churí-tepui, Chimantá Massif (Venezuela)" masterLastPageNumber="180" masterPageNumber="153" pageNumber="160" updateTime="1725427335288" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="C3474634CAE9251EDFB0CA66C68523CB">New and unusual species of cyanobacteria, diatoms and green algae, with a description of a new genus Ekerewekia gen. nov. (Chlorophyta) from the table mountain Churí-tepui, Chimantá Massif (Venezuela)</mods:title>
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<mods:namePart id="A6CE5FD3FA8A307BF2D67865449AD096">Kaštovský, Jan</mods:namePart>
<mods:affiliation id="5C2BC9740E46B89CE290C235A1E91C2E">Faculty of Science, University of South Bohemia, Branišovská 31, České Budějovice 37005, Czech Republic.</mods:affiliation>
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<mods:namePart id="93D9BC22727D080F835FA42C4317CB28">Veselá, Jana</mods:namePart>
<mods:affiliation id="1C5B3F27483217E98C4D15F00C25DA95">Faculty of Science, University of South Bohemia, Branišovská 31, České Budějovice 37005, Czech Republic.</mods:affiliation>
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<mods:namePart id="51030A68ECBE532CB0805F25830F8CD3">Bohunická, Markéta</mods:namePart>
<mods:affiliation id="BF1723AC9936C4F2ED50B5C17B5B8435">Faculty of Science, University of South Bohemia, Branišovská 31, České Budějovice 37005, Czech Republic.</mods:affiliation>
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<mods:namePart id="FAB636509E017C27CB34A2AE6242C7E3">Fučíková, Karolina</mods:namePart>
<mods:affiliation id="82DE7073554769FF20E49A0D12D57D98">University of Connecticut, Department of Ecology and Evolutionary Biology, 75 North Eagleville Road, Storrs, CT 06269 - 3043, U. S. A.</mods:affiliation>
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<mods:namePart id="5B332CACACFB7BA406DE9373FFFE0833">Štenclová, Lenka</mods:namePart>
<mods:affiliation id="986F3E366C661B381E9C9454987E9FE3">Faculty of Science, University of South Bohemia, Branišovská 31, České Budějovice 37005, Czech Republic.</mods:affiliation>
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<mods:namePart id="D67F9079F6368209155B4A6C7AD15C4C">Brewer-Carías, Charles</mods:namePart>
<mods:affiliation id="F9D3CA75922DDFD05B613F064B122A87">Expedition Director, Sociedad Venezolana de Ciencias Naturales, Caracas, Venezuela.</mods:affiliation>
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<treatment id="C04387E2C518FA75F9E6F923FF0B49CA" ID-DOI="http://doi.org/10.5281/zenodo.13675711" ID-Zenodo-Dep="13675711" LSID="urn:lsid:plazi:treatment:C04387E2C518FA75F9E6F923FF0B49CA" httpUri="http://treatment.plazi.org/id/C04387E2C518FA75F9E6F923FF0B49CA" lastPageId="8" lastPageNumber="161" pageId="7" pageNumber="160">
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<paragraph id="485536F4C518FA7AF9E6F923FC3549FE" blockId="7.[136,970,1755,1782]" box="[136,970,1755,1782]" pageId="7" pageNumber="160">
<heading id="131D8198C518FA7AF9E6F923FC3549FE" bold="true" box="[136,970,1755,1782]" fontSize="11" level="1" pageId="7" pageNumber="160" reason="1">
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<taxonomicName id="8FEA4D77C518FA7AF9E6F923FD1649FE" authority="Vesela, Bohunicka &amp; Kastovsky" authorityName="Vesela, Bohunicka &amp; Kastovsky" authorityYear="2016" box="[136,745,1755,1782]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="7" pageNumber="160" phylum="Bacillariophyta" rank="species" species="churiensis" status="sp. nov.">
<emphasis id="7A9EEAE6C518FA7AF9E6F923FE9B49FE" bold="true" box="[136,356,1755,1782]" italics="true" pageId="7" pageNumber="160">Eunotia churiensis</emphasis>
Veselá, Bohunická &amp; Kaštovský
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,
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<emphasis id="7A9EEAE6C518FA7AFB9BF924FCF149FE" bold="true" box="[757,782,1756,1782]" italics="true" pageId="7" pageNumber="160">sp</emphasis>
.
<emphasis id="7A9EEAE6C518FA7AFA72F924FCB949FE" bold="true" box="[796,838,1756,1782]" italics="true" pageId="7" pageNumber="160">nov</emphasis>
.
</taxonomicNameLabel>
(
<figureCitation id="D0D12A71C518FA7AFA32F925FC3D49FE" box="[860,962,1757,1782]" captionStart-0="FIGURE 5" captionStart-1="FIGURE 6" captionStart-2="FIGURE 7" captionStart-3="FIGURE 8" captionStartId-0="9.[136,229,1864,1885]" captionStartId-1="10.[136,229,1915,1936]" captionStartId-2="11.[136,229,1840,1861]" captionStartId-3="12.[136,229,1840,1861]" captionTargetBox-0="[170,1417,190,1839]" captionTargetBox-1="[170,1417,190,1890]" captionTargetBox-2="[170,1417,190,1814]" captionTargetBox-3="[170,1417,190,1814]" captionTargetId-0="figure-14@9.[170,1417,190,1839]" captionTargetId-1="figure-18@10.[170,1417,190,1891]" captionTargetId-2="figure-14@11.[170,1417,190,1814]" captionTargetId-3="figure-18@12.[170,1417,190,1814]" captionTargetPageId-0="9" captionTargetPageId-1="10" captionTargetPageId-2="11" captionTargetPageId-3="12" captionText-0="FIGURE 5. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 1). Fig. 5I represents the isotype specimen. Scale bar = 10 μm." captionText-1="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." captionText-2="FIGURE 7. Eunotia churiensis, sp. nov., external views in SEM. Valve overviews (A, C), details of the uneven valve surface (E, H) and the mantle (E), close-ups of the apices (B, F) with an opening to rimoportula on the tip (B, white arrow), detail of the external raphe ending and rimoportulae (white arrows) on the valve mantle together with a valvocopula (D), and the arrangement of the girdle bands (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, C, G) or 1 μm (B, D–F, H)." captionText-3="FIGURE 8. Eunotia churiensis, sp. nov., internal views in SEM.Valve overviews (A, F), detail of the arrangement of striae changing from the ventral towards the dorsal part of the valve (B), close-ups of apices (C–E, H, I) with a various number and layout of rimoportulae (3 in C, D; 2 in E, H, I), and a detail of internal openings of areolae (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, E, F) or 1 μm (B, C, D, G–I)." figureDoi-0="http://doi.org/10.5281/zenodo.13675657" figureDoi-1="http://doi.org/10.5281/zenodo.13675661" figureDoi-2="http://doi.org/10.5281/zenodo.13675663" figureDoi-3="http://doi.org/10.5281/zenodo.13675667" httpUri-0="https://zenodo.org/record/13675657/files/figure.png" httpUri-1="https://zenodo.org/record/13675661/files/figure.png" httpUri-2="https://zenodo.org/record/13675663/files/figure.png" httpUri-3="https://zenodo.org/record/13675667/files/figure.png" pageId="7" pageNumber="160">Figs 5–8</figureCitation>
)
</emphasis>
</heading>
</paragraph>
<paragraph id="485536F4C518FA75F9E6F8D0FE614D6D" blockId="7.[136,1452,1832,2069]" lastBlockId="8.[136,1452,160,757]" lastPageId="8" lastPageNumber="161" pageId="7" pageNumber="160">
Frustules rectangular in girdle view from the ventral side (
<figureCitation id="D0D12A71C518FA7AFBAEF8D0FCD74835" box="[704,808,1832,1853]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="7" pageNumber="160">Figs 6G–J</figureCitation>
),
<emphasis id="7A9EEAE6C518FA7AFA57F8D0FCAF4835" box="[825,848,1832,1853]" italics="true" pageId="7" pageNumber="160">ca</emphasis>
. 40–50 μm wide. Valves with moderately to strongly concave ventral margins and highly convex dorsal margins (
<figureCitation id="D0D12A71C518FA7AFBC7F8B4FCEB4869" box="[681,788,1868,1889]" captionStart="FIGURE 5" captionStartId="9.[136,229,1864,1885]" captionTargetBox="[170,1417,190,1839]" captionTargetId="figure-14@9.[170,1417,190,1839]" captionTargetPageId="9" captionText="FIGURE 5. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 1). Fig. 5I represents the isotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675657" httpUri="https://zenodo.org/record/13675657/files/figure.png" pageId="7" pageNumber="160">Figs 5A–L</figureCitation>
,
<figureCitation id="D0D12A71C518FA7AFA73F8B4FCA94869" box="[797,854,1868,1889]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="7" pageNumber="160">6A–F</figureCitation>
), mostly with four wave crests on the dorsal margin (
<emphasis id="7A9EEAE6C518FA7AFC3AF8B4FAA04869" box="[1364,1375,1868,1889]" italics="true" pageId="7" pageNumber="160">e</emphasis>
.
<emphasis id="7A9EEAE6C518FA7AFC0AF8B4FA8F4869" box="[1380,1392,1868,1889]" italics="true" pageId="7" pageNumber="160">g</emphasis>
.,
<figureCitation id="D0D12A71C518FA7AFCECF8B4FF07488D" captionStart="FIGURE 5" captionStartId="9.[136,229,1864,1885]" captionTargetBox="[170,1417,190,1839]" captionTargetId="figure-14@9.[170,1417,190,1839]" captionTargetPageId="9" captionText="FIGURE 5. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 1). Fig. 5I represents the isotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675657" httpUri="https://zenodo.org/record/13675657/files/figure.png" pageId="7" pageNumber="160">Figs 5A–E</figureCitation>
,
<figureCitation id="D0D12A71C518FA7AF86DF888FEC0488D" box="[259,319,1904,1925]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="7" pageNumber="160">6A–C</figureCitation>
), less commonly with three crests (in small valves,
<figureCitation id="D0D12A71C518FA7AFA55F888FC5A488D" box="[827,933,1904,1925]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="7" pageNumber="160">Figs 6D, F</figureCitation>
) or transition between three and four crests,
<emphasis id="7A9EEAE6C518FA7AFC30F888FA9A488D" box="[1374,1381,1904,1925]" italics="true" pageId="7" pageNumber="160">i</emphasis>
.
<emphasis id="7A9EEAE6C518FA7AFC05F888FA89488D" box="[1387,1398,1904,1925]" italics="true" pageId="7" pageNumber="160">e</emphasis>
., one of the crests close to the valve apex melting with the apex (
<figureCitation id="D0D12A71C518FA7AFA67F86CFC7048A1" box="[777,911,1940,1961]" captionStart="FIGURE 5" captionStartId="9.[136,229,1864,1885]" captionTargetBox="[170,1417,190,1839]" captionTargetId="figure-14@9.[170,1417,190,1839]" captionTargetPageId="9" captionText="FIGURE 5. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 1). Fig. 5I represents the isotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675657" httpUri="https://zenodo.org/record/13675657/files/figure.png" pageId="7" pageNumber="160">Figs 5G, J, L</figureCitation>
). Valve crests bluntly pointed, the depressions between the crests wide and open (
<figureCitation id="D0D12A71C518FA7AF8AEF840FDF048C5" box="[448,527,1976,1997]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="7" pageNumber="160">Fig. 6A</figureCitation>
). Valves relatively large for the genus, 54.5–115.5 μm long, 31.5–58.0 μm wide in the widest part of the valve, to 29–51 μm in between the crests and the center of ventral margin. Valve length-to-width ratio mostly around 2.1 (1.8–2.7). Valve apices variable from narrowly rounded (
<emphasis id="7A9EEAE6C518FA7AFA7CF7F8FCE2471D" box="[786,797,2048,2069]" italics="true" pageId="7" pageNumber="160">e</emphasis>
.
<emphasis id="7A9EEAE6C518FA7AFA4DF7F8FCD0471D" box="[803,815,2048,2069]" italics="true" pageId="7" pageNumber="160">g</emphasis>
.,
<figureCitation id="D0D12A71C518FA7AFA2CF7F8FC70471D" box="[834,911,2048,2069]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="7" pageNumber="160">Fig. 6C</figureCitation>
), truncated (
<emphasis id="7A9EEAE6C518FA7AFD65F7F8FBE9471D" box="[1035,1046,2048,2069]" italics="true" pageId="7" pageNumber="160">e</emphasis>
.
<emphasis id="7A9EEAE6C518FA7AFD75F7F8FBD8471D" box="[1051,1063,2048,2069]" italics="true" pageId="7" pageNumber="160">g</emphasis>
.,
<figureCitation id="D0D12A71C518FA7AFD55F7F8FB7B471D" box="[1083,1156,2048,2069]" captionStart="FIGURE 5" captionStartId="9.[136,229,1864,1885]" captionTargetBox="[170,1417,190,1839]" captionTargetId="figure-14@9.[170,1417,190,1839]" captionTargetPageId="9" captionText="FIGURE 5. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 1). Fig. 5I represents the isotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675657" httpUri="https://zenodo.org/record/13675657/files/figure.png" pageId="7" pageNumber="160">Fig. 5E</figureCitation>
) to round (e.g.,
<figureCitation id="D0D12A71C518FA7AFC4BF7F8FA8B471D" box="[1317,1396,2048,2069]" captionStart="FIGURE 5" captionStartId="9.[136,229,1864,1885]" captionTargetBox="[170,1417,190,1839]" captionTargetId="figure-14@9.[170,1417,190,1839]" captionTargetPageId="9" captionText="FIGURE 5. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 1). Fig. 5I represents the isotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675657" httpUri="https://zenodo.org/record/13675657/files/figure.png" pageId="7" pageNumber="160">Figs 5C</figureCitation>
,
<figureCitation id="D0D12A71C518FA7AFCEEF7F8FA5E471D" box="[1408,1441,2048,2069]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="7" pageNumber="160">6A</figureCitation>
). Terminal nodules on the ventral side of the valve, not far from the apices (
<figureCitation id="D0D12A71C517FA75FAE0FF58FC324FBD" box="[910,973,160,181]" captionStart="FIGURE 5" captionStartId="9.[136,229,1864,1885]" captionTargetBox="[170,1417,190,1839]" captionTargetId="figure-14@9.[170,1417,190,1839]" captionTargetPageId="9" captionText="FIGURE 5. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 1). Fig. 5I represents the isotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675657" httpUri="https://zenodo.org/record/13675657/files/figure.png" pageId="8" pageNumber="161">Figs 5</figureCitation>
,
<figureCitation id="D0D12A71C517FA75FAB6FF58FBEC4FBD" box="[984,1043,160,181]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="8" pageNumber="161">6A–F</figureCitation>
). Terminal raphe fissures curving onto the valve face, and pointing towards the dorsal part of the apex (
<figureCitation id="D0D12A71C517FA75FA7EFF3CFC9E4FD1" box="[784,865,196,217]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="8" pageNumber="161">Figs 6A</figureCitation>
,
<figureCitation id="D0D12A71C517FA75FA03FF3CFC3B4FD1" box="[877,964,196,217]" captionStart="FIGURE 7" captionStartId="11.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-14@11.[170,1417,190,1814]" captionTargetPageId="11" captionText="FIGURE 7. Eunotia churiensis, sp. nov., external views in SEM. Valve overviews (A, C), details of the uneven valve surface (E, H) and the mantle (E), close-ups of the apices (B, F) with an opening to rimoportula on the tip (B, white arrow), detail of the external raphe ending and rimoportulae (white arrows) on the valve mantle together with a valvocopula (D), and the arrangement of the girdle bands (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, C, G) or 1 μm (B, D–F, H)." figureDoi="http://doi.org/10.5281/zenodo.13675663" httpUri="https://zenodo.org/record/13675663/files/figure.png" pageId="8" pageNumber="161">7B–D, F</figureCitation>
). Helictoglossa is massive and well visible in LM (
<figureCitation id="D0D12A71C517FA75F9AAFF10FEFD4FF5" box="[196,258,232,253]" captionStart="FIGURE 5" captionStartId="9.[136,229,1864,1885]" captionTargetBox="[170,1417,190,1839]" captionTargetId="figure-14@9.[170,1417,190,1839]" captionTargetPageId="9" captionText="FIGURE 5. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 1). Fig. 5I represents the isotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675657" httpUri="https://zenodo.org/record/13675657/files/figure.png" pageId="8" pageNumber="161">Figs 5</figureCitation>
,
<figureCitation id="D0D12A71C517FA75F860FF10FEB54FF5" box="[270,330,232,253]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="8" pageNumber="161">6A–E</figureCitation>
). Number and arrangement of rimoportulae variable, one to four (most commonly two) rimoportulae per each valve apex (
<figureCitation id="D0D12A71C517FA75F999FEF4FE704E29" box="[247,399,268,289]" captionStart="FIGURE 8" captionStartId="12.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-18@12.[170,1417,190,1814]" captionTargetPageId="12" captionText="FIGURE 8. Eunotia churiensis, sp. nov., internal views in SEM.Valve overviews (A, F), detail of the arrangement of striae changing from the ventral towards the dorsal part of the valve (B), close-ups of apices (C–E, H, I) with a various number and layout of rimoportulae (3 in C, D; 2 in E, H, I), and a detail of internal openings of areolae (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, E, F) or 1 μm (B, C, D, G–I)." figureDoi="http://doi.org/10.5281/zenodo.13675667" httpUri="https://zenodo.org/record/13675667/files/figure.png" pageId="8" pageNumber="161">Figs 8C–E, H, I</figureCitation>
), in total three to five per valve. Rimoportulae arranged individually (
<figureCitation id="D0D12A71C517FA75FD47FEF4FB6C4E29" box="[1065,1171,268,289]" captionStart="FIGURE 8" captionStartId="12.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-18@12.[170,1417,190,1814]" captionTargetPageId="12" captionText="FIGURE 8. Eunotia churiensis, sp. nov., internal views in SEM.Valve overviews (A, F), detail of the arrangement of striae changing from the ventral towards the dorsal part of the valve (B), close-ups of apices (C–E, H, I) with a various number and layout of rimoportulae (3 in C, D; 2 in E, H, I), and a detail of internal openings of areolae (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, E, F) or 1 μm (B, C, D, G–I)." figureDoi="http://doi.org/10.5281/zenodo.13675667" httpUri="https://zenodo.org/record/13675667/files/figure.png" pageId="8" pageNumber="161">Figs 8D, E</figureCitation>
), as a group (
<figureCitation id="D0D12A71C517FA75FC7CFEF4FAA44E29" box="[1298,1371,268,289]" captionStart="FIGURE 8" captionStartId="12.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-18@12.[170,1417,190,1814]" captionTargetPageId="12" captionText="FIGURE 8. Eunotia churiensis, sp. nov., internal views in SEM.Valve overviews (A, F), detail of the arrangement of striae changing from the ventral towards the dorsal part of the valve (B), close-ups of apices (C–E, H, I) with a various number and layout of rimoportulae (3 in C, D; 2 in E, H, I), and a detail of internal openings of areolae (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, E, F) or 1 μm (B, C, D, G–I)." figureDoi="http://doi.org/10.5281/zenodo.13675667" httpUri="https://zenodo.org/record/13675667/files/figure.png" pageId="8" pageNumber="161">Fig. 8C</figureCitation>
), or as a combination of both. External opening of each individual rimoportula (or a group of rimoportulae) mostly as an elongated pore (
<figureCitation id="D0D12A71C517FA75FCEBFEC8FF244E61" captionStart="FIGURE 7" captionStartId="11.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-14@11.[170,1417,190,1814]" captionTargetPageId="11" captionText="FIGURE 7. Eunotia churiensis, sp. nov., external views in SEM. Valve overviews (A, C), details of the uneven valve surface (E, H) and the mantle (E), close-ups of the apices (B, F) with an opening to rimoportula on the tip (B, white arrow), detail of the external raphe ending and rimoportulae (white arrows) on the valve mantle together with a valvocopula (D), and the arrangement of the girdle bands (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, C, G) or 1 μm (B, D–F, H)." figureDoi="http://doi.org/10.5281/zenodo.13675663" httpUri="https://zenodo.org/record/13675663/files/figure.png" pageId="8" pageNumber="161">Fig. 7B</figureCitation>
), sometimes as a small round pore, located at the apex on the mantle (
<figureCitation id="D0D12A71C517FA75FAE4FEACFC2A4E61" box="[906,981,340,361]" captionStart="FIGURE 7" captionStartId="11.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-14@11.[170,1417,190,1814]" captionTargetPageId="11" captionText="FIGURE 7. Eunotia churiensis, sp. nov., external views in SEM. Valve overviews (A, C), details of the uneven valve surface (E, H) and the mantle (E), close-ups of the apices (B, F) with an opening to rimoportula on the tip (B, white arrow), detail of the external raphe ending and rimoportulae (white arrows) on the valve mantle together with a valvocopula (D), and the arrangement of the girdle bands (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, C, G) or 1 μm (B, D–F, H)." figureDoi="http://doi.org/10.5281/zenodo.13675663" httpUri="https://zenodo.org/record/13675663/files/figure.png" pageId="8" pageNumber="161">Fig. 7D</figureCitation>
) or on the junction of the valve face and mantle (
<figureCitation id="D0D12A71C517FA75F9ABFE80FEEF4E85" box="[197,272,376,397]" captionStart="FIGURE 7" captionStartId="11.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-14@11.[170,1417,190,1814]" captionTargetPageId="11" captionText="FIGURE 7. Eunotia churiensis, sp. nov., external views in SEM. Valve overviews (A, C), details of the uneven valve surface (E, H) and the mantle (E), close-ups of the apices (B, F) with an opening to rimoportula on the tip (B, white arrow), detail of the external raphe ending and rimoportulae (white arrows) on the valve mantle together with a valvocopula (D), and the arrangement of the girdle bands (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, C, G) or 1 μm (B, D–F, H)." figureDoi="http://doi.org/10.5281/zenodo.13675663" httpUri="https://zenodo.org/record/13675663/files/figure.png" pageId="8" pageNumber="161">Fig. 7B</figureCitation>
). Valves densely striated (
<figureCitation id="D0D12A71C517FA75FB66FE80FDB94E85" box="[520,582,376,397]" captionStart="FIGURE 5" captionStartId="9.[136,229,1864,1885]" captionTargetBox="[170,1417,190,1839]" captionTargetId="figure-14@9.[170,1417,190,1839]" captionTargetPageId="9" captionText="FIGURE 5. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 1). Fig. 5I represents the isotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675657" httpUri="https://zenodo.org/record/13675657/files/figure.png" pageId="8" pageNumber="161">Figs 5</figureCitation>
,
<figureCitation id="D0D12A71C517FA75FB3EFE80FD774E85" box="[592,648,376,397]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="8" pageNumber="161">6A–F</figureCitation>
,
<figureCitation id="D0D12A71C517FA75FBFFFE80FD334E85" box="[657,716,376,397]" captionStart="FIGURE 7" captionStartId="11.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-14@11.[170,1417,190,1814]" captionTargetPageId="11" captionText="FIGURE 7. Eunotia churiensis, sp. nov., external views in SEM. Valve overviews (A, C), details of the uneven valve surface (E, H) and the mantle (E), close-ups of the apices (B, F) with an opening to rimoportula on the tip (B, white arrow), detail of the external raphe ending and rimoportulae (white arrows) on the valve mantle together with a valvocopula (D), and the arrangement of the girdle bands (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, C, G) or 1 μm (B, D–F, H)." figureDoi="http://doi.org/10.5281/zenodo.13675663" httpUri="https://zenodo.org/record/13675663/files/figure.png" pageId="8" pageNumber="161">7A, C</figureCitation>
,
<figureCitation id="D0D12A71C517FA75FBBBFE80FCF04E85" box="[725,783,376,397]" captionStart="FIGURE 8" captionStartId="12.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-18@12.[170,1417,190,1814]" captionTargetPageId="12" captionText="FIGURE 8. Eunotia churiensis, sp. nov., internal views in SEM.Valve overviews (A, F), detail of the arrangement of striae changing from the ventral towards the dorsal part of the valve (B), close-ups of apices (C–E, H, I) with a various number and layout of rimoportulae (3 in C, D; 2 in E, H, I), and a detail of internal openings of areolae (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, E, F) or 1 μm (B, C, D, G–I)." figureDoi="http://doi.org/10.5281/zenodo.13675667" httpUri="https://zenodo.org/record/13675667/files/figure.png" pageId="8" pageNumber="161">8A, F</figureCitation>
), 14–17 striae in 10 μm near the center of ventral part of the valve, up to 22 striae in 10 μm at the wave crests due to the inserted striae (
<figureCitation id="D0D12A71C517FA75FA59FE64FC7D4EB9" box="[823,898,412,433]" captionStart="FIGURE 8" captionStartId="12.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-18@12.[170,1417,190,1814]" captionTargetPageId="12" captionText="FIGURE 8. Eunotia churiensis, sp. nov., internal views in SEM.Valve overviews (A, F), detail of the arrangement of striae changing from the ventral towards the dorsal part of the valve (B), close-ups of apices (C–E, H, I) with a various number and layout of rimoportulae (3 in C, D; 2 in E, H, I), and a detail of internal openings of areolae (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, E, F) or 1 μm (B, C, D, G–I)." figureDoi="http://doi.org/10.5281/zenodo.13675667" httpUri="https://zenodo.org/record/13675667/files/figure.png" pageId="8" pageNumber="161">Fig. 8B</figureCitation>
), and 17–20 striae in 10 μm near the apices (
<figureCitation id="D0D12A71C517FA75FC5AFE64FA5F4EB9" box="[1332,1440,412,433]" captionStart="FIGURE 8" captionStartId="12.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-18@12.[170,1417,190,1814]" captionTargetPageId="12" captionText="FIGURE 8. Eunotia churiensis, sp. nov., internal views in SEM.Valve overviews (A, F), detail of the arrangement of striae changing from the ventral towards the dorsal part of the valve (B), close-ups of apices (C–E, H, I) with a various number and layout of rimoportulae (3 in C, D; 2 in E, H, I), and a detail of internal openings of areolae (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, E, F) or 1 μm (B, C, D, G–I)." figureDoi="http://doi.org/10.5281/zenodo.13675667" httpUri="https://zenodo.org/record/13675667/files/figure.png" pageId="8" pageNumber="161">Figs 8E, H</figureCitation>
). External small ridges in between striae irregularly spaced, giving the valve surface appearance of a “rough cloth” (
<figureCitation id="D0D12A71C517FA75FC67FE38FAA64EDD" box="[1289,1369,448,469]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="8" pageNumber="161">Figs 6A</figureCitation>
,
<figureCitation id="D0D12A71C517FA75FC0DFE38FA5E4EDD" box="[1379,1441,448,469]" captionStart="FIGURE 7" captionStartId="11.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-14@11.[170,1417,190,1814]" captionTargetPageId="11" captionText="FIGURE 7. Eunotia churiensis, sp. nov., external views in SEM. Valve overviews (A, C), details of the uneven valve surface (E, H) and the mantle (E), close-ups of the apices (B, F) with an opening to rimoportula on the tip (B, white arrow), detail of the external raphe ending and rimoportulae (white arrows) on the valve mantle together with a valvocopula (D), and the arrangement of the girdle bands (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, C, G) or 1 μm (B, D–F, H)." figureDoi="http://doi.org/10.5281/zenodo.13675663" httpUri="https://zenodo.org/record/13675663/files/figure.png" pageId="8" pageNumber="161">7A–H</figureCitation>
). At the valve edges the small ridges fused in a certain extent, sometimes forming a web-like structure (
<figureCitation id="D0D12A71C517FA75FDF5FE1CFAF54EF1" box="[1179,1290,484,505]" captionStart="FIGURE 7" captionStartId="11.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-14@11.[170,1417,190,1814]" captionTargetPageId="11" captionText="FIGURE 7. Eunotia churiensis, sp. nov., external views in SEM. Valve overviews (A, C), details of the uneven valve surface (E, H) and the mantle (E), close-ups of the apices (B, F) with an opening to rimoportula on the tip (B, white arrow), detail of the external raphe ending and rimoportulae (white arrows) on the valve mantle together with a valvocopula (D), and the arrangement of the girdle bands (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, C, G) or 1 μm (B, D–F, H)." figureDoi="http://doi.org/10.5281/zenodo.13675663" httpUri="https://zenodo.org/record/13675663/files/figure.png" pageId="8" pageNumber="161">Figs 7G, H</figureCitation>
). On the mantle, slightly below the valve edges, an elevated irregular siliceous rim-like structure present (
<figureCitation id="D0D12A71C517FA75FD60FDF0FB4D4D15" box="[1038,1202,520,541]" captionStart="FIGURE 7" captionStartId="11.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-14@11.[170,1417,190,1814]" captionTargetPageId="11" captionText="FIGURE 7. Eunotia churiensis, sp. nov., external views in SEM. Valve overviews (A, C), details of the uneven valve surface (E, H) and the mantle (E), close-ups of the apices (B, F) with an opening to rimoportula on the tip (B, white arrow), detail of the external raphe ending and rimoportulae (white arrows) on the valve mantle together with a valvocopula (D), and the arrangement of the girdle bands (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, C, G) or 1 μm (B, D–F, H)." figureDoi="http://doi.org/10.5281/zenodo.13675663" httpUri="https://zenodo.org/record/13675663/files/figure.png" pageId="8" pageNumber="161">Figs 7B, C, E–G</figureCitation>
). Externally areolae open, small and embedded in between the ridges (
<figureCitation id="D0D12A71C517FA75FB0BFDD4FCFA4D49" box="[613,773,556,577]" captionStart="FIGURE 7" captionStartId="11.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-14@11.[170,1417,190,1814]" captionTargetPageId="11" captionText="FIGURE 7. Eunotia churiensis, sp. nov., external views in SEM. Valve overviews (A, C), details of the uneven valve surface (E, H) and the mantle (E), close-ups of the apices (B, F) with an opening to rimoportula on the tip (B, white arrow), detail of the external raphe ending and rimoportulae (white arrows) on the valve mantle together with a valvocopula (D), and the arrangement of the girdle bands (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, C, G) or 1 μm (B, D–F, H)." figureDoi="http://doi.org/10.5281/zenodo.13675663" httpUri="https://zenodo.org/record/13675663/files/figure.png" pageId="8" pageNumber="161">Figs 7B, E, F, H</figureCitation>
); internally areolae also unoccluded, well rounded and large (
<figureCitation id="D0D12A71C517FA75FC37FDD4FF134D6D" captionStart="FIGURE 8" captionStartId="12.[136,229,1840,1861]" captionTargetBox="[170,1417,190,1814]" captionTargetId="figure-18@12.[170,1417,190,1814]" captionTargetPageId="12" captionText="FIGURE 8. Eunotia churiensis, sp. nov., internal views in SEM.Valve overviews (A, F), detail of the arrangement of striae changing from the ventral towards the dorsal part of the valve (B), close-ups of apices (C–E, H, I) with a various number and layout of rimoportulae (3 in C, D; 2 in E, H, I), and a detail of internal openings of areolae (G). “=” indicate different parts or views of the same specimen. Scale bars = 10 μm (A, E, F) or 1 μm (B, C, D, G–I)." figureDoi="http://doi.org/10.5281/zenodo.13675667" httpUri="https://zenodo.org/record/13675667/files/figure.png" pageId="8" pageNumber="161">Figs 8B, E, G</figureCitation>
);
<quantity id="8F129B11C517FA75F990FDA8FEAC4D6D" box="[254,339,592,613]" metricMagnitude="-1" metricUnit="m" metricValue="5.588" metricValueMax="6.604" metricValueMin="4.572" pageId="8" pageNumber="161" unit="in" value="22.0" valueMax="26.0" valueMin="18.0">18–26 in</quantity>
10 μm.
</paragraph>
</subSubSection>
<subSubSection id="00F0657FC517FA75F9E6FD8CFB3A4DFD" pageId="8" pageNumber="161" type="materials_examined">
<paragraph id="485536F4C517FA75F9E6FD8CFB3A4DFD" blockId="8.[136,1452,160,757]" pageId="8" pageNumber="161">
<emphasis id="7A9EEAE6C517FA75F9E6FD8CFF454D81" bold="true" box="[136,186,628,649]" pageId="8" pageNumber="161">Type</emphasis>
:—
<collectingCountry id="30FD7664C517FA75F9B8FD8CFE944D81" box="[214,363,628,649]" name="Venezuela" pageId="8" pageNumber="161">VENEZUELA</collectingCountry>
.
<collectingRegion id="8A2EF816C517FA75F81BFD8CFE064D81" box="[373,505,628,649]" country="Venezuela" name="Bolivar" pageId="8" pageNumber="161">Bolívar State</collectingRegion>
: Guyana Highlands, Chimantá Massif, Churí-tepui–Charles Brewer Cave Base Camp, Bathroom Creek,
<geoCoordinate id="2DDE5033C517FA75F86DFD60FE804DA5" box="[259,383,664,685]" degrees="5" direction="north" minutes="14.952" orientation="latitude" pageId="8" pageNumber="161" precision="1" value="5.2492">5º 14.952’ N</geoCoordinate>
,
<geoCoordinate id="2DDE5033C517FA75F8E4FD60FDF54DA5" box="[394,522,664,685]" degrees="62" direction="west" minutes="1.588" orientation="longitude" pageId="8" pageNumber="161" precision="1" value="-62.026466">62º 1.588’ W</geoCoordinate>
,
<quantity id="8F129B11C517FA75FB7AFD60FDA14DA5" box="[532,606,664,685]" metricMagnitude="3" metricUnit="m" metricValue="2.2" pageId="8" pageNumber="161" unit="m" value="2200.0">2200 m</quantity>
a.s.l.,
<emphasis id="7A9EEAE6C517FA75FBF0FD60FD564DA5" box="[670,681,664,685]" italics="true" pageId="8" pageNumber="161">
<collectionCode id="2EFBAE31C517FA75FBF0FD60FD564DA5" box="[670,681,664,685]" country="South Africa" lsid="urn:lsid:biocol.org:col:14647" name="University of the Witwatersrand" pageId="8" pageNumber="161" type="Herbarium">J</collectionCode>
</emphasis>
.
<emphasis id="7A9EEAE6C517FA75FBDBFD60FCBE4DA5" box="[693,833,664,685]" italics="true" pageId="8" pageNumber="161">Kaštovský 107</emphasis>
,
<emphasis id="7A9EEAE6C517FA75FA20FD60FC0D4DA5" box="[846,1010,664,685]" italics="true" pageId="8" pageNumber="161">
<date id="3C541034C517FA75FA20FD60FC0D4DA5" box="[846,1010,664,685]" pageId="8" pageNumber="161" value="2012-01-20">20 January 2012</date>
</emphasis>
(
<typeStatus id="97518856C517FA75FA91FD60FBA74DA5" box="[1023,1112,664,685]" pageId="8" pageNumber="161" type="holotype">holotype</typeStatus>
:
<collectionCode id="2EFBAE31C517FA75FD0FFD60FB594DA5" box="[1121,1190,664,685]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" lsid="urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="8" pageNumber="161">ANSP</collectionCode>
!, slide
<collectionCode id="2EFBAE31C517FA75FD89FD60FAF64DA5" box="[1255,1289,664,685]" country="0" name="Goucher College" pageId="8" pageNumber="161">GC</collectionCode>
26823, specimen 12.0 mm south by
<quantity id="8F129B11C517FA75F818FD44FE334DD9" box="[374,460,700,721]" metricMagnitude="-2" metricUnit="m" metricValue="2.33" pageId="8" pageNumber="161" unit="mm" value="23.3">23.3 mm</quantity>
east from the benchmark cross on the slide, here illustrated as
<figureCitation id="D0D12A71C517FA75FD56FD44FB794DD9" box="[1080,1158,700,721]" captionStart="FIGURE 6" captionStartId="10.[136,229,1915,1936]" captionTargetBox="[170,1417,190,1890]" captionTargetId="figure-18@10.[170,1417,190,1891]" captionTargetPageId="10" captionText="FIGURE 6. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2), including girdle views. Fig. 6A represents the holotype specimen with well visible multiple rimoportulae on both apices (white arrows). White lines draw attention to the typical different shape of the top of the crests versus the area in between the crests (compare to Fig. 10A). “=” indicate the same specimen in different foci. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675661" httpUri="https://zenodo.org/record/13675661/files/figure.png" pageId="8" pageNumber="161">Fig. 6A</figureCitation>
.
<typeStatus id="97518856C517FA75FDFEFD44FB254DD9" box="[1168,1242,700,721]" pageId="8" pageNumber="161" type="isotype">Isotype</typeStatus>
:
<collectionCode id="2EFBAE31C517FA75FD8BFD44FAD84DD9" box="[1253,1319,700,721]" country="Czech Republic" httpUri="http://biocol.org/urn:lsid:biocol.org:col:15554" lsid="urn:lsid:biocol.org:col:15554" name="University of South Bohemia" pageId="8" pageNumber="161" type="Herbarium">CBFS</collectionCode>
!, slide A-053, specimen
<quantity id="8F129B11C517FA75F870FD18FE984DFD" box="[286,359,736,757]" metricMagnitude="-3" metricUnit="m" metricValue="6.7" pageId="8" pageNumber="161" unit="mm" value="6.7">6.7 mm</quantity>
south by
<quantity id="8F129B11C517FA75F8ABFD18FDE54DFD" box="[453,538,736,757]" metricMagnitude="-2" metricUnit="m" metricValue="1.88" pageId="8" pageNumber="161" unit="mm" value="18.8">18.8 mm</quantity>
east from the benchmark cross on the slide, here illustrated as
<figureCitation id="D0D12A71C517FA75FD18FD18FB474DFD" box="[1142,1208,736,757]" captionStart="FIGURE 5" captionStartId="9.[136,229,1864,1885]" captionTargetBox="[170,1417,190,1839]" captionTargetId="figure-14@9.[170,1417,190,1839]" captionTargetPageId="9" captionText="FIGURE 5. Eunotia churiensis, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 1). Fig. 5I represents the isotype specimen. Scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675657" httpUri="https://zenodo.org/record/13675657/files/figure.png" pageId="8" pageNumber="161">Fig. 5I</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="00F0657FC517FA75F9E6FCDDFE424C6A" pageId="8" pageNumber="161" type="etymology">
<paragraph id="485536F4C517FA75F9E6FCDDFE424C6A" blockId="8.[136,1452,805,1730]" pageId="8" pageNumber="161">
<emphasis id="7A9EEAE6C517FA75F9E6FCDDFEF64C36" bold="true" box="[136,265,805,830]" pageId="8" pageNumber="161">Etymology</emphasis>
:—From the Latin adjective
<taxonomicName id="8FEA4D77C517FA75FB25FCDDFD414C36" authorityName="Vesela, Bohunicka &amp; Kastovsky" authorityYear="2016" box="[587,702,805,830]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="churiensis">
<emphasis id="7A9EEAE6C517FA75FB25FCDDFD414C36" box="[587,702,805,830]" italics="true" pageId="8" pageNumber="161">churiensis</emphasis>
</taxonomicName>
(from the table mountain Churí-tepui), referring to the area where the species was discovered.
</paragraph>
</subSubSection>
<subSubSection id="00F0657FC517FA75F9D3FC95FF0B49CA" pageId="8" pageNumber="161" type="biology_ecology">
<paragraph id="485536F4C517FA75F9D3FC95FBD84CA2" blockId="8.[136,1452,805,1730]" pageId="8" pageNumber="161">
<emphasis id="7A9EEAE6C517FA75F9D3FC95FE134C8E" bold="true" box="[189,492,877,902]" pageId="8" pageNumber="161">Ecology and distribution</emphasis>
:—This taxon occurred only at a single site,
<emphasis id="7A9EEAE6C517FA75FA9BFC95FC024C8E" box="[1013,1021,877,902]" italics="true" pageId="8" pageNumber="161">i</emphasis>
.
<emphasis id="7A9EEAE6C517FA75FD6AFC95FBEF4C8E" box="[1028,1040,877,902]" italics="true" pageId="8" pageNumber="161">e</emphasis>
., Bathroom Creek near the Charles Brewer Cave Base Camp as an epiphyte on an unidentified red alga (Rhodophyta).
</paragraph>
<paragraph id="485536F4C517FA75F9D3FC4DFB8D4B8A" blockId="8.[136,1452,805,1730]" pageId="8" pageNumber="161">
<emphasis id="7A9EEAE6C517FA75F9D3FC4DFDD84CC6" bold="true" box="[189,551,949,974]" pageId="8" pageNumber="161">Comparison with similar taxa</emphasis>
:—Without any doubt, the morphologically most similar taxon to
<taxonomicName id="8FEA4D77C517FA75FC79FC4DFA544CC6" authorityName="Vesela, Bohunicka &amp; Kastovsky" authorityYear="2016" box="[1303,1451,949,974]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="churiensis">
<emphasis id="7A9EEAE6C517FA75FC79FC4DFAD74CC6" box="[1303,1320,949,974]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75FC56FC4DFA544CC6" box="[1336,1451,949,974]" italics="true" pageId="8" pageNumber="161">churiensis</emphasis>
</taxonomicName>
is the here described
<taxonomicName id="8FEA4D77C517FA75F81BFC21FD944CFA" authorityName="Kaštovský &amp; Veselá &amp; Bohunická &amp; Fučíková &amp; Štenclová &amp; Brewer-Carías" authorityYear="2016" box="[373,619,985,1010]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="multirimoportulata">
<emphasis id="7A9EEAE6C517FA75F81BFC21FE794CFA" box="[373,390,985,1010]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75F8FAFC21FD944CFA" box="[404,619,985,1010]" italics="true" pageId="8" pageNumber="161">multirimoportulata</emphasis>
</taxonomicName>
. They both share very similar valve outline and dimensions (valve length, width, striae and areolae density). Main features separating these two taxa are different number of rimoportulae, length-to-width ratios and striae density at apices (all higher in
<taxonomicName id="8FEA4D77C517FA75FA38FBD9FBB24B32" authorityName="Kaštovský &amp; Veselá &amp; Bohunická &amp; Fučíková &amp; Štenclová &amp; Brewer-Carías" authorityYear="2016" box="[854,1101,1057,1082]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="multirimoportulata">
<emphasis id="7A9EEAE6C517FA75FA38FBD9FC984B32" box="[854,871,1057,1082]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75FA18FBD9FBB24B32" box="[886,1101,1057,1082]" italics="true" pageId="8" pageNumber="161">multirimoportulata</emphasis>
</taxonomicName>
, Table 4), softer arching of the valve crests in
<taxonomicName id="8FEA4D77C517FA75F85FFBBDFDD84B56" authorityName="Kaštovský &amp; Veselá &amp; Bohunická &amp; Fučíková &amp; Štenclová &amp; Brewer-Carías" authorityYear="2016" box="[305,551,1093,1118]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="multirimoportulata">
<emphasis id="7A9EEAE6C517FA75F85FFBBDFEBD4B56" box="[305,322,1093,1118]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75F83EFBBDFDD84B56" box="[336,551,1093,1118]" italics="true" pageId="8" pageNumber="161">multirimoportulata</emphasis>
</taxonomicName>
(correlating with a smaller crest height,
<figureCitation id="D0D12A71C517FA75FA9FFBBDFBA84B56" box="[1009,1111,1093,1118]" captionStart="FIGURE 10" captionStartId="15.[136,229,1851,1872]" captionTargetBox="[170,1417,423,1818]" captionTargetId="figure-174@15.[170,1417,422,1826]" captionTargetPageId="15" captionText="FIGURE 10. Eunotia multirimoportulata, sp. nov. Size diminution series and the variation of the valve shapes of the population from the type locality in LM (part 2). Thick white lines in Fig. 10A draw attention to the typical similar shape of the top of the crests and the area in between the crests (compare to Fig. 6A). The thin white lines in Fig. 10A illustrate the method used for measuring crest heights (a distance from a line drawn between the centers of two surroundings saddle parts to the top of the crest). “=” indicate the same specimen in different foci. Well visible multiple rimoportulae are marked with white arrows. Scale bars = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13675675" httpUri="https://zenodo.org/record/13675675/files/figure.png" pageId="8" pageNumber="161">Fig. 10A</figureCitation>
, Table 4B), and their different ecology (inhabiting a creek
<emphasis id="7A9EEAE6C517FA75F8AFFB91FE274B8A" box="[449,472,1129,1154]" italics="true" pageId="8" pageNumber="161">vs</emphasis>
. a pool, although both growing epiphytically on red algae).
</paragraph>
<paragraph id="485536F4C517FA75F9D3FB75FD604AE2" blockId="8.[136,1452,805,1730]" pageId="8" pageNumber="161">
<taxonomicName id="8FEA4D77C517FA75F9D3FB75FE6F4BAE" authorityName="Vesela, Bohunicka &amp; Kastovsky" authorityYear="2016" box="[189,400,1165,1190]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="churiensis">
<emphasis id="7A9EEAE6C517FA75F9D3FB75FE6F4BAE" box="[189,400,1165,1190]" italics="true" pageId="8" pageNumber="161">Eunotia churiensis</emphasis>
</taxonomicName>
is very similar in its valve outline to
<taxonomicName id="8FEA4D77C517FA75FA5FFB75FAFA4BAE" authority="Ehrenberg (1838: 192)" authorityName="Ehrenberg" authorityPageNumber="192" authorityYear="1838" box="[817,1285,1165,1190]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="tetraodon">
<emphasis id="7A9EEAE6C517FA75FA5FFB75FC014BAE" box="[817,1022,1165,1190]" italics="true" pageId="8" pageNumber="161">Eunotia tetraodon</emphasis>
<bibRefCitation id="2C7B4B05C517FA75FD6AFB75FAFA4BAE" author="Ehrenberg, C. G." box="[1028,1285,1165,1190]" pageId="8" pageNumber="161" refId="ref11183" refString="Ehrenberg, C. G. (1838) Die Infusionsthierchen als vollkommene Organismen. Ein Blick in das tiefere organische Leben der Natur. Leopold Voss, Leipzig, 548 pp. http: // dx. doi. org / 10.5962 / bhl. title. 58475" type="book" year="1838">Ehrenberg (1838: 192)</bibRefCitation>
</taxonomicName>
, having valves with moderately concave ventral margins and highly convex dorsal margins, and with four wave crest in most cases. However,
<taxonomicName id="8FEA4D77C517FA75F992FB2DFEAA4BE6" authorityName="Ehrenberg" authorityYear="1837" box="[252,341,1237,1262]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="genus">
<emphasis id="7A9EEAE6C517FA75F992FB2DFEAA4BE6" box="[252,341,1237,1262]" italics="true" pageId="8" pageNumber="161">Eunotia</emphasis>
</taxonomicName>
c
<emphasis id="7A9EEAE6C517FA75F806FB2DFE304BE6" box="[360,463,1237,1262]" italics="true" pageId="8" pageNumber="161">huriensis</emphasis>
possesses valves approximately two times larger as opposed to 22–70 μm long and 10– 24 μm wide valves of
<taxonomicName id="8FEA4D77C517FA75F8EAFB01FDEF4A1A" authorityName="Ehrenberg" authorityYear="1838" box="[388,528,1273,1298]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="tetraodon">
<emphasis id="7A9EEAE6C517FA75F8EAFB01FE6A4A1A" box="[388,405,1273,1298]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75F8CDFB01FDEF4A1A" box="[419,528,1273,1298]" italics="true" pageId="8" pageNumber="161">tetraodon</emphasis>
</taxonomicName>
(
<bibRefCitation id="2C7B4B05C517FA75FB71FB01FCB44A1A" author="Lange-Bertalot, H. &amp; Bak, M. &amp; Witkowski, A." box="[543,843,1273,1298]" pageId="8" pageNumber="161" pagination="1 - 747" refId="ref12777" refString="Lange-Bertalot, H., Bak, M. &amp; Witkowski, A. (2011) Diatoms of the European inland water and comparable habitats: Eunotia and some related genera. Diatoms of Europe 6: 1 - 747." type="journal article" year="2011">
Lange-Bertalot
<emphasis id="7A9EEAE6C517FA75FBBCFB01FCFC4A1A" box="[722,771,1273,1298]" italics="true" pageId="8" pageNumber="161">et al</emphasis>
. 2011
</bibRefCitation>
, Table 4A). Furthermore, valves of
<taxonomicName id="8FEA4D77C517FA75FDB3FB01FA904A1A" authorityName="Vesela, Bohunicka &amp; Kastovsky" authorityYear="2016" box="[1245,1391,1273,1298]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="churiensis">
<emphasis id="7A9EEAE6C517FA75FDB3FB01FB114A1A" box="[1245,1262,1273,1298]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75FD92FB01FA904A1A" box="[1276,1391,1273,1298]" italics="true" pageId="8" pageNumber="161">churiensis</emphasis>
</taxonomicName>
have a slightly denser striation compared to
<taxonomicName id="8FEA4D77C517FA75FB53FAE5FD364A3E" authorityName="Ehrenberg" authorityYear="1838" box="[573,713,1309,1334]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="tetraodon">
<emphasis id="7A9EEAE6C517FA75FB53FAE5FDB14A3E" box="[573,590,1309,1334]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75FB32FAE5FD364A3E" box="[604,713,1309,1334]" italics="true" pageId="8" pageNumber="161">tetraodon</emphasis>
</taxonomicName>
(Table 4A). Unfortunately,
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Lange-Bertalot
<emphasis id="7A9EEAE6C517FA75FDDCFAE5FB1C4A3E" box="[1202,1251,1309,1334]" italics="true" pageId="8" pageNumber="161">et al</emphasis>
. (2011)
</bibRefCitation>
and other authors did not provide any information about the presence of rimoportulae in
<taxonomicName id="8FEA4D77C517FA75FA9AFAB9FB7F4A52" authorityName="Ehrenberg" authorityYear="1838" box="[1012,1152,1345,1370]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="tetraodon">
<emphasis id="7A9EEAE6C517FA75FA9AFAB9FBFA4A52" box="[1012,1029,1345,1370]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75FD7DFAB9FB7F4A52" box="[1043,1152,1345,1370]" italics="true" pageId="8" pageNumber="161">tetraodon</emphasis>
</taxonomicName>
. A single picture known to us,
<emphasis id="7A9EEAE6C517FA75F9C1FA9DFF484A76" box="[175,183,1381,1406]" italics="true" pageId="8" pageNumber="161">i</emphasis>
.
<emphasis id="7A9EEAE6C517FA75F9D0FA9DFF354A76" box="[190,202,1381,1406]" italics="true" pageId="8" pageNumber="161">e</emphasis>
., plate 105, fig.
<quantity id="8F129B11C517FA75F8EFFA9DFE534A76" box="[385,428,1381,1406]" metricMagnitude="-2" metricUnit="m" metricValue="2.54" pageId="8" pageNumber="161" unit="in" value="1.0">1 in</quantity>
<bibRefCitation id="2C7B4B05C517FA75F8DCFA9DFD124A76" author="Lange-Bertalot, H. &amp; Bak, M. &amp; Witkowski, A." box="[434,749,1381,1406]" pageId="8" pageNumber="161" pagination="1 - 747" refId="ref12777" refString="Lange-Bertalot, H., Bak, M. &amp; Witkowski, A. (2011) Diatoms of the European inland water and comparable habitats: Eunotia and some related genera. Diatoms of Europe 6: 1 - 747." type="journal article" year="2011">
Lange-Bertalot
<emphasis id="7A9EEAE6C517FA75FB0CFA9DFD6C4A76" box="[610,659,1381,1406]" italics="true" pageId="8" pageNumber="161">et al</emphasis>
. (2011)
</bibRefCitation>
, indicates that this taxon might possess up to two rimoportulae at one apex and none on the other apex, unlike
<taxonomicName id="8FEA4D77C517FA75FBC8FA71FCC54AAA" authorityName="Vesela, Bohunicka &amp; Kastovsky" authorityYear="2016" box="[678,826,1417,1442]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="churiensis">
<emphasis id="7A9EEAE6C517FA75FBC8FA71FD484AAA" box="[678,695,1417,1442]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75FBA9FA71FCC54AAA" box="[711,826,1417,1442]" italics="true" pageId="8" pageNumber="161">churiensis</emphasis>
</taxonomicName>
with at least three rimoportulae present on each valve. Additionally, the valve face of
<taxonomicName id="8FEA4D77C517FA75F8B1FA55FD954ACE" authorityName="Ehrenberg" authorityYear="1838" box="[479,618,1453,1478]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="tetraodon">
<emphasis id="7A9EEAE6C517FA75F8B1FA55FE0F4ACE" box="[479,496,1453,1478]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75F893FA55FD954ACE" box="[509,618,1453,1478]" italics="true" pageId="8" pageNumber="161">tetraodon</emphasis>
</taxonomicName>
is smooth (plate 103, fig. 3, 4,
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Lange-Bertalot
<emphasis id="7A9EEAE6C517FA75FD1FFA55FB5D4ACE" box="[1137,1186,1453,1478]" italics="true" pageId="8" pageNumber="161">et al</emphasis>
. 2011
</bibRefCitation>
) without any hint of ridges as observed in valves of
<taxonomicName id="8FEA4D77C517FA75FB68FA29FD674AE2" authorityName="Vesela, Bohunicka &amp; Kastovsky" authorityYear="2016" box="[518,664,1489,1514]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="churiensis">
<emphasis id="7A9EEAE6C517FA75FB68FA29FDE84AE2" box="[518,535,1489,1514]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75FB4BFA29FD674AE2" box="[549,664,1489,1514]" italics="true" pageId="8" pageNumber="161">churiensis</emphasis>
</taxonomicName>
.
</paragraph>
<paragraph id="485536F4C517FA75F9D3FA0DFAF8495E" blockId="8.[136,1452,805,1730]" pageId="8" pageNumber="161">
<taxonomicName id="8FEA4D77C517FA75F9D3FA0DFE414906" box="[189,446,1525,1550]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="semicircularis">
<emphasis id="7A9EEAE6C517FA75F9D3FA0DFE414906" box="[189,446,1525,1550]" italics="true" pageId="8" pageNumber="161">Eunotia semicircularis</emphasis>
</taxonomicName>
(
<bibRefCitation id="2C7B4B05C517FA75F8A0FA0DFD754906" author="Ehrenberg, C. G." box="[462,650,1525,1550]" pageId="8" pageNumber="161" refId="ref11232" refString="Ehrenberg, C. G. (1854) Mikrogeologie. Das Erden un Felsen schaffende Wirken des unsichtbar kleinen selbstandingen Lebens auf der Erde. Leopold Voss, Leipzig, 374 pp." type="book" year="1854">Ehrenberg 1854</bibRefCitation>
: pl. 16, fig. 31a) Lange-Bertalot &amp; Metzeltin in
<bibRefCitation id="2C7B4B05C517FA75FDD1FA0DFEF5493A" author="Lange-Bertalot, H. &amp; Bak, M. &amp; Witkowski, A." pageId="8" pageNumber="161" pagination="1 - 747" refId="ref12777" refString="Lange-Bertalot, H., Bak, M. &amp; Witkowski, A. (2011) Diatoms of the European inland water and comparable habitats: Eunotia and some related genera. Diatoms of Europe 6: 1 - 747." type="journal article" year="2011">
Lange-Bertalot
<emphasis id="7A9EEAE6C517FA75FC1FFA0DFA5A4906" box="[1393,1445,1525,1550]" italics="true" pageId="8" pageNumber="161">et al</emphasis>
. (2011: 216)
</bibRefCitation>
also bears resemblance in the valve outline to
<taxonomicName id="8FEA4D77C517FA75FA7EF9E1FC5D493A" authorityName="Vesela, Bohunicka &amp; Kastovsky" authorityYear="2016" box="[784,930,1561,1586]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="churiensis">
<emphasis id="7A9EEAE6C517FA75FA7EF9E1FCDE493A" box="[784,801,1561,1586]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75FA41F9E1FC5D493A" box="[815,930,1561,1586]" italics="true" pageId="8" pageNumber="161">churiensis</emphasis>
</taxonomicName>
, although can be easily distinguished based on its small size, lack of rimoportulae and geographic distribution (Scandinavia and the Arctic, Table 4B).
</paragraph>
<paragraph id="485536F4C517FA75F9D3F999FF0B49CA" blockId="8.[136,1452,805,1730]" pageId="8" pageNumber="161">
Small valves of
<taxonomicName id="8FEA4D77C517FA75F81EF999FDFD4972" authorityName="Vesela, Bohunicka &amp; Kastovsky" authorityYear="2016" box="[368,514,1633,1658]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="churiensis">
<emphasis id="7A9EEAE6C517FA75F81EF999FE7E4972" box="[368,385,1633,1658]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75F8E1F999FDFD4972" box="[399,514,1633,1658]" italics="true" pageId="8" pageNumber="161">churiensis</emphasis>
</taxonomicName>
could be potentially mistaken for
<taxonomicName id="8FEA4D77C517FA75FA10F999FB184972" authority="Ehrenberg (1837: 45)" authorityName="Ehrenberg" authorityPageNumber="45" authorityYear="1837" box="[894,1255,1633,1658]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="triodon">
<emphasis id="7A9EEAE6C517FA75FA10F999FC704972" box="[894,911,1633,1658]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75FAF2F999FC114972" box="[924,1006,1633,1658]" italics="true" pageId="8" pageNumber="161">triodon</emphasis>
<bibRefCitation id="2C7B4B05C517FA75FA9BF999FB184972" author="Ehrenberg, C. G." box="[1013,1255,1633,1658]" pageId="8" pageNumber="161" pagination="43 - 45" refId="ref11135" refString="Ehrenberg, C. G. (1837) Uber ein aus fossilen Infusorien bestehendes, 1832 zu Brod verbacknes Bergmehl von der Grenzen Lapplands in Schweden. Bericht uber die zur Bekanntmachung geeigneten Verhandlungen der Koniglich-Preussischen Akademie der Wissenschaften zu Berlin 1837: 43 - 45." type="journal article" year="1837">Ehrenberg (1837: 45)</bibRefCitation>
</taxonomicName>
. However, valves of
<taxonomicName id="8FEA4D77C517FA75F9C9F97DFEE74996" authorityName="Ehrenberg" authorityYear="1837" box="[167,280,1669,1694]" class="Bacillariophyceae" family="Eunotiaceae" genus="Eunotia" higherTaxonomySource="GBIF" kingdom="Plantae" order="Eunotiales" pageId="8" pageNumber="161" phylum="Bacillariophyta" rank="species" species="triodon">
<emphasis id="7A9EEAE6C517FA75F9C9F97DFF474996" box="[167,184,1669,1694]" italics="true" pageId="8" pageNumber="161">E</emphasis>
.
<emphasis id="7A9EEAE6C517FA75F9A8F97DFEE74996" box="[198,280,1669,1694]" italics="true" pageId="8" pageNumber="161">triodon</emphasis>
</taxonomicName>
have much smaller width, do not possess any rimoportulae and do not occur outside of Holarctic region (Table 4).
</paragraph>
</subSubSection>
</treatment>
</document>
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