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<document id="A274C37A8688BC3803940758380FFFEF" ID-CLB-Dataset="302482" ID-DOI="10.11646/phytotaxa.393.1.5" ID-GBIF-Dataset="a8256e49-e77e-41ad-a9ba-04836997ccef" ID-ISSN="1179-3163" ID-Zenodo-Dep="13718079" 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.treatments_approvedBy="felipe" checkinTime="1725653338479" checkinUser="felipe" docAuthor="Yang, Song-Qi, Zhang, Wei, Blanco, Saùl, Jüttner, Ingrid &amp; Wu, Zhong-Xing" docDate="2019" docId="CD6C87A0FF94FF85FF5DFBDB3622E2C2" docLanguage="en" docName="phytotaxa.393.1.5.pdf" docOrigin="Phytotaxa 393 (1)" docSource="http://dx.doi.org/10.11646/phytotaxa.393.1.5" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.13:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="13" docTitle="Delicata chongqingensis Wei Zhang, S. Q. Yang &amp; S. Blanco 2019, sp. nov." docType="treatment" docVersion="4" lastPageNumber="59" masterDocId="3155FFD8FF96FF87FFD5FFF03359E565" masterDocTitle="Delicata chongqingensis sp. nov., a new cymbelloid diatom species (Bacillariophyceae) from Daning River, Chongqing, China" masterLastPageNumber="66" masterPageNumber="57" pageNumber="59" updateTime="1725663813009" updateUser="ExternalLinkService" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="B837139C7F4741B94ED6E74C40BEB7D7">Delicata chongqingensis sp. nov., a new cymbelloid diatom species (Bacillariophyceae) from Daning River, Chongqing, China</mods:title>
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<mods:namePart id="83EE9DE415BAAB6DFB7E8821114DC80A">Yang, Song-Qi</mods:namePart>
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<mods:namePart id="DDDEA05CCE4D1630CF411FE182F1654C">Zhang, Wei</mods:namePart>
<mods:affiliation id="5715FAFD456029F67215ED0A0B296CDD">Centre for Research on Environmental Ecology and Fish Nutrition (Ministry of Agriculture, China), Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources (Ministry of Education, China), National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, P. R. China.</mods:affiliation>
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<mods:affiliation id="3FB23978650D7A861992730BF9E04A4F">Diatom Lab. IMARENABIO, La Serna, 58, 24007 León, Spain.</mods:affiliation>
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<mods:affiliation id="A3550B5831F31609DEDFB445D0B12596">Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing 400715, P. R. China</mods:affiliation>
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<paragraph id="457A36B6FF94FF85FF5DFBDB3772E122" blockId="2.[136,1067,1067,1095]" box="[136,1067,1067,1095]" pageId="2" pageNumber="59">
<heading id="1E3281DAFF94FF85FF5DFBDB3772E122" bold="true" box="[136,1067,1067,1095]" fontSize="11" level="1" pageId="2" pageNumber="59" reason="1">
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<taxonomicName id="82C54D35FF94FF85FF5DFBDB3018E122" authority="Wei Zhang, S.Q.Yang &amp; S. Blanco" authorityName="Wei Zhang, S. Q. Yang &amp; S. Blanco" authorityYear="2019" box="[136,833,1067,1095]" class="Bacillariophyceae" family="Cymbellaceae" genus="Delicata" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="59" phylum="Ochrophyta" rank="species" species="chongqingensis" status="sp. nov.">
<emphasis id="77B1EAA4FF94FF85FF5DFBDB32FAE123" bold="true" box="[136,419,1067,1094]" italics="true" pageId="2" pageNumber="59">Delicata chongqingensis</emphasis>
Wei Zhang, S.Q.Yang &amp; S. Blanco
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<emphasis id="77B1EAA4FF94FF85FC9CFBDC303BE123" bold="true" box="[841,866,1068,1094]" italics="true" pageId="2" pageNumber="59">sp</emphasis>
.
<emphasis id="77B1EAA4FF94FF85FCA5FBDC30C3E123" bold="true" box="[880,922,1068,1094]" italics="true" pageId="2" pageNumber="59">nov</emphasis>
.
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(
<figureCitation id="DDFE2A33FF94FF85FC7AFBDE377DE122" box="[943,1060,1070,1095]" captionStart-0="FIGURES 211" captionStart-1="FIGURES 1219" captionStart-2="FIGURES 2025" captionStartId-0="3.[136,243,1568,1589]" captionStartId-1="4.[136,243,1939,1960]" captionStartId-2="6.[136,243,1884,1905]" captionTargetBox-0="[329,1253,209,1543]" captionTargetBox-1="[281,1307,190,1914]" captionTargetBox-2="[238,1349,749,1859]" captionTargetId-0="figure-14@3.[329,1258,209,1543]" captionTargetId-1="figure-16@4.[281,1307,190,1914]" captionTargetId-2="figure-319@6.[238,1349,749,1859]" captionTargetPageId-0="3" captionTargetPageId-1="4" captionTargetPageId-2="6" captionText-0="FIGURES 211. Delicata chongqingensis, LM (DIC). Valve views, showing the valve variability of the holotype population, scale bar = 10 μm." captionText-1="FIGURES 1219. Delicata chongqingensis, SEM, external views. 12, 13. External view of the whole valve. 1417. External view of the central part of the valve showing the dorsal semifascia, three to four isolated, rounded or slite-like areolae (arrows), and the shortened striae in the valve centre on the dorsal side. 18, 19. Valve apices and tilde-shaped areolae forming distinct undulate striae. Scale bars = 5 μm (Figs 12, 13), 4 μm (Figs 14, 15), 2 μm (Figs 1618) and 3 μm (Fig. 19)." captionText-2="FIGURES 2025. Delicata chongqingensis, SEM, internal views. 20. Internal view of a whole valve and the dorsal semifascia. 21, 22. Internal view of valve ends with helictoglossae. Figs 23, 24. Internal view of valve centre, central area bordered by shortened striae, and one or two slit-like areolae on the ventral side marked by small marginal nodules (arrowheads). Fig. 25. Internal view of an eroded part of the valve, showing the stria alveoli and the oval and tilde-shaped internal openings of the areolae. Scale bars = 5 μm (Fig. 20), 2 μm (Figs 21, 22, 25), 3 μm (Figs 23, 24)." figureDoi-0="http://doi.org/10.5281/zenodo.13718081" figureDoi-1="http://doi.org/10.5281/zenodo.13718083" figureDoi-2="http://doi.org/10.5281/zenodo.13718085" httpUri-0="https://zenodo.org/record/13718081/files/figure.png" httpUri-1="https://zenodo.org/record/13718083/files/figure.png" httpUri-2="https://zenodo.org/record/13718085/files/figure.png" pageId="2" pageNumber="59">Figs 225</figureCitation>
)
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<paragraph id="457A36B6FF94FF85FF5DFB8632D7E092" blockId="2.[136,1453,1142,1959]" pageId="2" pageNumber="59">
LM: Valves moderately dorsiventral, semi-lanceolate, dorsal margin evenly and moderately arched, ventral margin straight in the central section. Slightly protracted, rounded valve ends (
<figureCitation id="DDFE2A33FF94FF85FC71FB6A3741E1D6" box="[932,1048,1178,1203]" captionStart="FIGURES 211" captionStartId="3.[136,243,1568,1589]" captionTargetBox="[329,1253,209,1543]" captionTargetId="figure-14@3.[329,1258,209,1543]" captionTargetPageId="3" captionText="FIGURES 211. Delicata chongqingensis, LM (DIC). Valve views, showing the valve variability of the holotype population, scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13718081" httpUri="https://zenodo.org/record/13718081/files/figure.png" pageId="2" pageNumber="59">Figs 211</figureCitation>
). Length of the observed specimens 21.030.5 μm, width 6.08.3 μm, length/width ratio 2.94.0, median 3.5 (n=32). Axial area narrow, curved, not or slightly ventrally displaced. Dorsally central area forming a large, irregular semifascia, bordered on the dorsal side by 24 shortened central striae of different length. Raphe not or slightly ventrally displaced, distinctly lateral, becoming filiform near the distal ends and reverse-lateral near the proximal ends. On the ventral side in the valve centre striae slightly radiate or more or less parallel, sometimes slightly wider spaced, slightly radiate away from the centre and often becoming more or less parallel close to the apices. On the dorsal side shortened striae wider spaced, more or less parallel or slightly radiate. Away from the centre striae slightly radiate throughout the valve. Areolae not discernable in LM. Striae
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10 μm, mostly
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10 μm dorsally,
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10 μm ventrally, slightly denser towards the ends (
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10 μm).
</paragraph>
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<subSubSection id="0DDF653DFF94FF85FF68F9F2328EE25E" pageId="2" pageNumber="59" type="description">
<paragraph id="457A36B6FF94FF85FF68F9F2328EE25E" blockId="2.[136,1453,1142,1959]" pageId="2" pageNumber="59">
SEM: Proximal raphe branches curved to the ventral side terminating in small central pores that are slightly ventrally deflected (
<figureCitation id="DDFE2A33FF94FF85FEB8F9D632ABE35A" box="[365,498,1574,1599]" captionStart="FIGURES 1219" captionStartId="4.[136,243,1939,1960]" captionTargetBox="[281,1307,190,1914]" captionTargetId="figure-16@4.[281,1307,190,1914]" captionTargetPageId="4" captionText="FIGURES 1219. Delicata chongqingensis, SEM, external views. 12, 13. External view of the whole valve. 1417. External view of the central part of the valve showing the dorsal semifascia, three to four isolated, rounded or slite-like areolae (arrows), and the shortened striae in the valve centre on the dorsal side. 18, 19. Valve apices and tilde-shaped areolae forming distinct undulate striae. Scale bars = 5 μm (Figs 12, 13), 4 μm (Figs 14, 15), 2 μm (Figs 1618) and 3 μm (Fig. 19)." figureDoi="http://doi.org/10.5281/zenodo.13718083" httpUri="https://zenodo.org/record/13718083/files/figure.png" pageId="2" pageNumber="59">Figs 1217</figureCitation>
). Distal raphe fissures hooked towards the dorsal side (
<figureCitation id="DDFE2A33FF94FF85FBA6F9D6360AE35A" box="[1139,1363,1574,1599]" captionStart="FIGURES 1219" captionStartId="4.[136,243,1939,1960]" captionTargetBox="[281,1307,190,1914]" captionTargetId="figure-16@4.[281,1307,190,1914]" captionTargetPageId="4" captionText="FIGURES 1219. Delicata chongqingensis, SEM, external views. 12, 13. External view of the whole valve. 1417. External view of the central part of the valve showing the dorsal semifascia, three to four isolated, rounded or slite-like areolae (arrows), and the shortened striae in the valve centre on the dorsal side. 18, 19. Valve apices and tilde-shaped areolae forming distinct undulate striae. Scale bars = 5 μm (Figs 12, 13), 4 μm (Figs 14, 15), 2 μm (Figs 1618) and 3 μm (Fig. 19)." figureDoi="http://doi.org/10.5281/zenodo.13718083" httpUri="https://zenodo.org/record/13718083/files/figure.png" pageId="2" pageNumber="59">Figs 12, 13, 18, 19</figureCitation>
). Striae composed of tilde-shaped or sigmoid areolae (
<figureCitation id="DDFE2A33FF94FF85FD45F9BA3049E306" box="[656,784,1610,1635]" captionStart="FIGURES 1219" captionStartId="4.[136,243,1939,1960]" captionTargetBox="[281,1307,190,1914]" captionTargetId="figure-16@4.[281,1307,190,1914]" captionTargetPageId="4" captionText="FIGURES 1219. Delicata chongqingensis, SEM, external views. 12, 13. External view of the whole valve. 1417. External view of the central part of the valve showing the dorsal semifascia, three to four isolated, rounded or slite-like areolae (arrows), and the shortened striae in the valve centre on the dorsal side. 18, 19. Valve apices and tilde-shaped areolae forming distinct undulate striae. Scale bars = 5 μm (Figs 12, 13), 4 μm (Figs 14, 15), 2 μm (Figs 1618) and 3 μm (Fig. 19)." figureDoi="http://doi.org/10.5281/zenodo.13718083" httpUri="https://zenodo.org/record/13718083/files/figure.png" pageId="2" pageNumber="59">Figs 1219</figureCitation>
) extending around the apices and onto the mantle. Three to four rounded or slit-like, isolated areolae are present on the ventral side near the central nodule (
<figureCitation id="DDFE2A33FF94FF85FB15F99E361AE3E2" box="[1216,1347,1646,1671]" captionStart="FIGURES 1219" captionStartId="4.[136,243,1939,1960]" captionTargetBox="[281,1307,190,1914]" captionTargetId="figure-16@4.[281,1307,190,1914]" captionTargetPageId="4" captionText="FIGURES 1219. Delicata chongqingensis, SEM, external views. 12, 13. External view of the whole valve. 1417. External view of the central part of the valve showing the dorsal semifascia, three to four isolated, rounded or slite-like areolae (arrows), and the shortened striae in the valve centre on the dorsal side. 18, 19. Valve apices and tilde-shaped areolae forming distinct undulate striae. Scale bars = 5 μm (Figs 12, 13), 4 μm (Figs 14, 15), 2 μm (Figs 1618) and 3 μm (Fig. 19)." figureDoi="http://doi.org/10.5281/zenodo.13718083" httpUri="https://zenodo.org/record/13718083/files/figure.png" pageId="2" pageNumber="59">Figs 1417</figureCitation>
). Narrow linear axial area widening towards the semifascia in the valve centre. Raphe continuous internally, distally raphe ends terminating in small, knob-like helictoglossae which are offset and bent very slightly towards the dorsal margin (
<figureCitation id="DDFE2A33FF94FF85FAAFF946338AE396" captionStart="FIGURES 2025" captionStartId="6.[136,243,1884,1905]" captionTargetBox="[238,1349,749,1859]" captionTargetId="figure-319@6.[238,1349,749,1859]" captionTargetPageId="6" captionText="FIGURES 2025. Delicata chongqingensis, SEM, internal views. 20. Internal view of a whole valve and the dorsal semifascia. 21, 22. Internal view of valve ends with helictoglossae. Figs 23, 24. Internal view of valve centre, central area bordered by shortened striae, and one or two slit-like areolae on the ventral side marked by small marginal nodules (arrowheads). Fig. 25. Internal view of an eroded part of the valve, showing the stria alveoli and the oval and tilde-shaped internal openings of the areolae. Scale bars = 5 μm (Fig. 20), 2 μm (Figs 21, 22, 25), 3 μm (Figs 23, 24)." figureDoi="http://doi.org/10.5281/zenodo.13718085" httpUri="https://zenodo.org/record/13718085/files/figure.png" pageId="2" pageNumber="59">Figs 2022</figureCitation>
). Ventrally, one or two slit-like internal openings, marked by small marginal nodules, at the end of the central striae adjacent to the central area (
<figureCitation id="DDFE2A33FF94FF85FDDBF90E31CAE272" box="[526,659,1790,1815]" captionStart="FIGURES 2025" captionStartId="6.[136,243,1884,1905]" captionTargetBox="[238,1349,749,1859]" captionTargetId="figure-319@6.[238,1349,749,1859]" captionTargetPageId="6" captionText="FIGURES 2025. Delicata chongqingensis, SEM, internal views. 20. Internal view of a whole valve and the dorsal semifascia. 21, 22. Internal view of valve ends with helictoglossae. Figs 23, 24. Internal view of valve centre, central area bordered by shortened striae, and one or two slit-like areolae on the ventral side marked by small marginal nodules (arrowheads). Fig. 25. Internal view of an eroded part of the valve, showing the stria alveoli and the oval and tilde-shaped internal openings of the areolae. Scale bars = 5 μm (Fig. 20), 2 μm (Figs 21, 22, 25), 3 μm (Figs 23, 24)." figureDoi="http://doi.org/10.5281/zenodo.13718085" httpUri="https://zenodo.org/record/13718085/files/figure.png" pageId="2" pageNumber="59">Figs 23, 24</figureCitation>
). Striae constitute alveoli internally, with oval or tilde-shaped internal areola openings (
<figureCitation id="DDFE2A33FF94FF85FE92F8D23292E25E" box="[327,459,1826,1851]" captionStart="FIGURES 2025" captionStartId="6.[136,243,1884,1905]" captionTargetBox="[238,1349,749,1859]" captionTargetId="figure-319@6.[238,1349,749,1859]" captionTargetPageId="6" captionText="FIGURES 2025. Delicata chongqingensis, SEM, internal views. 20. Internal view of a whole valve and the dorsal semifascia. 21, 22. Internal view of valve ends with helictoglossae. Figs 23, 24. Internal view of valve centre, central area bordered by shortened striae, and one or two slit-like areolae on the ventral side marked by small marginal nodules (arrowheads). Fig. 25. Internal view of an eroded part of the valve, showing the stria alveoli and the oval and tilde-shaped internal openings of the areolae. Scale bars = 5 μm (Fig. 20), 2 μm (Figs 21, 22, 25), 3 μm (Figs 23, 24)." figureDoi="http://doi.org/10.5281/zenodo.13718085" httpUri="https://zenodo.org/record/13718085/files/figure.png" pageId="2" pageNumber="59">Figs 2125</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="0DDF653DFF94FF85FF68F8B63094E2E6" pageId="2" pageNumber="59" type="materials_examined">
<paragraph id="457A36B6FF94FF85FF68F8B63094E2E6" blockId="2.[136,1453,1142,1959]" pageId="2" pageNumber="59">
<emphasis id="77B1EAA4FF94FF85FF68F8B63258E23A" bold="true" box="[189,257,1862,1887]" pageId="2" pageNumber="59">Type:</emphasis>
<collectingCountry id="3DD27626FF94FF85FECAF8B63223E23A" box="[287,378,1862,1887]" name="China" pageId="2" pageNumber="59">CHINA</collectingCountry>
.
<collectingRegion id="8701F854FF94FF85FE50F8B63158E23A" box="[389,513,1862,1887]" country="China" name="Chongqing" pageId="2" pageNumber="59">Chongqing</collectingRegion>
municipality, Daning River,
<geoCoordinate id="20F15071FF94FF85FC99F8B630B4E23A" box="[844,1005,1862,1887]" degrees="31" direction="north" minutes="39" orientation="latitude" pageId="2" pageNumber="59" precision="15" seconds="42" value="31.661667">31° 39 42 N</geoCoordinate>
,
<geoCoordinate id="20F15071FF94FF85FC2CF8B637FDE23A" box="[1017,1188,1862,1887]" degrees="109" direction="east" minutes="27" orientation="longitude" pageId="2" pageNumber="59" precision="15" seconds="50" value="109.46388">109° 27 50 E</geoCoordinate>
, elevation
<quantity id="823D9B53FF94FF85FAF5F8B63631E23A" box="[1312,1384,1862,1887]" metricMagnitude="2" metricUnit="m" metricValue="6.8" pageId="2" pageNumber="59" unit="m" value="680.0">680 m</quantity>
a.s.l., coll. Z.X. Wu,
<date id="317B1076FF94FF85FEFAF89A3292E2E6" box="[303,459,1898,1923]" pageId="2" pageNumber="59" value="2013-04-20">20 April 2013</date>
(
<typeStatus id="9A7E8814FF94FF85FE0FF89A311BE2E6" box="[474,578,1898,1923]" pageId="2" pageNumber="59" type="holotype">holotype</typeStatus>
: slide DNR-1, illustrated in
<figureCitation id="DDFE2A33FF94FF85FCA9F89A30E6E2E6" box="[892,959,1898,1923]" captionStart="FIGURES 211" captionStartId="3.[136,243,1568,1589]" captionTargetBox="[329,1253,209,1543]" captionTargetId="figure-14@3.[329,1258,209,1543]" captionTargetPageId="3" captionText="FIGURES 211. Delicata chongqingensis, LM (DIC). Valve views, showing the valve variability of the holotype population, scale bar = 10 μm." figureDoi="http://doi.org/10.5281/zenodo.13718081" httpUri="https://zenodo.org/record/13718081/files/figure.png" pageId="2" pageNumber="59">Fig. 8</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="0DDF653DFF94FF85FF68F87E3622E2C2" box="[189,1403,1934,1959]" pageId="2" pageNumber="59" type="etymology">
<paragraph id="457A36B6FF94FF85FF68F87E3622E2C2" blockId="2.[136,1453,1142,1959]" box="[189,1403,1934,1959]" pageId="2" pageNumber="59">
<emphasis id="77B1EAA4FF94FF85FF68F87E3211E2C2" bold="true" box="[189,328,1934,1959]" pageId="2" pageNumber="59">Etymology:</emphasis>
—The specific epithet
<taxonomicName id="82C54D35FF94FF85FD9DF87E305BE2C2" authorityName="Wei Zhang, S. Q. Yang &amp; S. Blanco" authorityYear="2019" box="[584,770,1934,1959]" class="Bacillariophyceae" family="Cymbellaceae" genus="Delicata" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="2" pageNumber="59" phylum="Ochrophyta" rank="species" species="chongqingensis">
<emphasis id="77B1EAA4FF94FF85FD81F87E305BE2C2" box="[596,770,1934,1959]" italics="true" pageId="2" pageNumber="59">chongqingensis</emphasis>
</taxonomicName>
” refers to the place from which the species is described.
</paragraph>
</subSubSection>
</treatment>
</document>