503 lines
68 KiB
XML
503 lines
68 KiB
XML
<document id="9BE596F81E7BD71796DE094052BD3545" ID-DOI="10.11646/phytotaxa.90.1.1" ID-ISSN="1179-3163" ID-Zenodo-Dep="5071976" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1625517298981" checkinUser="felipe" docAuthor="Pavlov, Aleksandar, Levkov, Zlatko, Williams, David M. & Edlund, Mark B." docDate="2013" docId="065A87E62A78A437FF5EFA14FD440F8E" docLanguage="en" docName="Phytotaxa.90.1.1-53.pdf" docOrigin="Phytotaxa 90 (1)" docSource="http://dx.doi.org/10.11646/phytotaxa.90.1.1" docStyle="DocumentStyle:13F189B31CB4CCCE9197361A4E100104.3:Phytotaxa.2011-2013.journal_article" docStyleId="13F189B31CB4CCCE9197361A4E100104" docStyleName="Phytotaxa.2011-2013.journal_article" docStyleVersion="3" docTitle="Hippodonta latelanceolata A. Pavlov, Levkov, D. M. Williams & Edlund 2013, sp. nov." docType="treatment" docVersion="3" lastPageNumber="14" masterDocId="FA63FF9E2A73A43AFFC9FF9DFF960A2E" masterDocTitle="Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes" masterLastPageNumber="53" masterPageNumber="1" pageNumber="12" updateTime="1698991198074" updateUser="plazi" zenodo-license-document="CLOSED">
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<mods:title id="0ED41373C0ED2B6AF7AC10F803112A1E">Observations on Hippodonta (Bacillariophyceae) in selected ancient lakes</mods:title>
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<mods:namePart id="25A33A8ADB9EA7430982F289905D2BDA">Pavlov, Aleksandar</mods:namePart>
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<mods:namePart id="9DA6BBFBFD2194C5854E714577D970EF">Levkov, Zlatko</mods:namePart>
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<mods:namePart id="9C8EB71077AD58CBF2ACBE3760E64278">Williams, David M.</mods:namePart>
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<mods:namePart id="AAB3083F2E50FC7308FC97AAB465EF17">Edlund, Mark B.</mods:namePart>
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<mods:affiliation id="5A49B2E38C52F0F3EC03FCFBF973C2DB">St. Croix Watershed Research Station, Science Museum of Minnesota, Marine on St. Croix, Minnesota, USA.</mods:affiliation>
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<mods:title id="CF0E0F31F0C02A05C8D5E0295ADB48C4">Phytotaxa</mods:title>
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<mods:date id="E4CA4471F4F0480B426BCF22D0C80AA1">2013</mods:date>
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<mods:number id="37DC56F8D66CCA0B04B3BC8811FD3E0E">2013-03-28</mods:number>
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<mods:number id="1DF33C98BAB9CDCB618895352202E583">90</mods:number>
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<subSubSection id="C6E9657B2A78A431FF5EFA14FAAA0F8D" box="[151,1340,1417,1443]" pageId="11" pageNumber="12" type="nomenclature">
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<paragraph id="8E4C36F02A78A431FF5EFA14FAAA0F8D" blockId="11.[151,1340,1417,1443]" box="[151,1340,1417,1443]" pageId="11" pageNumber="12">
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<heading id="D504819C2A78A431FF5EFA14FAAA0F8D" box="[151,1340,1417,1443]" fontSize="11" level="2" pageId="11" pageNumber="12" reason="3">
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<taxonomicName id="49F34D732A78A431FF5EFA14FC710F8D" authority="A. Pavlov, Levkov, D.M. Williams & Edlund" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[151,999,1417,1443]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="11" pageNumber="12" phylum="Bacillariophyta" rank="species" species="latelanceolata" status="sp. nov.">
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<emphasis id="BC87EAE22A78A431FF5EFA14FE470F8D" bold="true" box="[151,465,1417,1443]" italics="true" pageId="11" pageNumber="12">Hippodonta latelanceolata</emphasis>
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A. Pavlov, Levkov, D.M. Williams & Edlund
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</taxonomicName>
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,
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<emphasis id="BC87EAE22A78A431FC3AFA14FBDD0F8C" box="[1011,1099,1417,1442]" italics="true" pageId="11" pageNumber="12">
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<taxonomicNameLabel id="A7B457992A78A431FC3AFA14FBDD0F8C" box="[1011,1099,1417,1442]" pageId="11" pageNumber="12" rank="species">sp. nov.</taxonomicNameLabel>
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</emphasis>
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(
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<figureCitation id="16C82A752A78A431FB93FA14FB490F8D" box="[1114,1247,1417,1443]" captionStart="FIGURES 27–63" captionStartId="37.[151,269,1738,1762]" captionTargetBox="[264,1323,194,1706]" captionTargetId="figure-52@37.[264,1323,194,1706]" captionTargetPageId="37" captionText="FIGURES 27–63: LM micrographs. Figs 27–44. Hippodonta latelanceolata (type material). Fig. 30. Complete frustule in girdle view. Figs 45–63. Hippodonta costulatiformis var. costulatiformis. Fig. 63. Complete frustule in girdle view. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5071980" httpUri="https://zenodo.org/record/5071980/files/figure.png" pageId="11" pageNumber="12">Figs 27–44</figureCitation>
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,
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<figureCitation id="16C82A752A78A431FB23FA14FAA20F8D" box="[1258,1332,1417,1443]" captionStart="FIGURES 64–68" captionStartId="38.[151,269,1618,1642]" captionTargetBox="[264,1323,194,1594]" captionTargetId="figure-139@38.[264,1323,194,1594]" captionTargetPageId="38" captionText="FIGURES 64–68: SEM micrographs. Figs 64–66. Hippodonta latelanceolata (type material). Fig. 64. External view of entire valve. Terminal pores of raphe deflected towards secondary valve side. Fig. 65. Close-up of central area of valve in Fig. 64. Central raphe endings with pronounced teardrop-shaped depressions. Fig. 66. External view of valve depicting complete mantle. Pronounced hyaline area present throughout valve mantle. Fig. 67. Hippodonta lueneburgensis. External view of complete frustule showing broad unornamented girdle. Fig. 68. Hippodonta costulatiformis var. costulatiformis. External view of complete frustule showing prominent hyaline area present on valve mantle and broad, unornamented girdle. Scale bars in Figs 64, 66, 68 = 5 µm; Fig. 67 = 10 µm; Fig. 65 = 2 µm." figureDoi="http://doi.org/10.5281/zenodo.5071982" httpUri="https://zenodo.org/record/5071982/files/figure.png" pageId="11" pageNumber="12">64–66</figureCitation>
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)
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</heading>
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</paragraph>
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<subSubSection id="C6E9657B2A78A436FF5EFA4BFB220B62" lastPageId="12" lastPageNumber="13" pageId="11" pageNumber="12" type="materials_examined">
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<paragraph id="8E4C36F02A78A431FF5EFA4BFB400C23" blockId="11.[151,1436,1494,1549]" pageId="11" pageNumber="12">
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<emphasis id="BC87EAE22A78A431FF5EFA4BFF590FC0" bold="true" box="[151,207,1494,1518]" pageId="11" pageNumber="12">Type</emphasis>
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||
:—
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<materialsCitation id="3E9B3CAD2A78A431FF24FA4BFB450C23" collectingDate="2007-04-02" collectorName="Z. Levkov. & Accession No." country="Macedonia" elevation="13" location="Bay of Ljubanishta" municipality="Lake" pageId="11" pageNumber="12" specimenCount="1" stateProvince="Ohrid" typeStatus="holotype">
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<collectingCountry id="F6E476602A78A431FF24FA4BFE000FC3" box="[237,406,1494,1517]" name="Macedonia" pageId="11" pageNumber="12">MACEDONIA</collectingCountry>
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.
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<collectingMunicipality id="6E28AC8A2A78A431FE68FA4BFE400FC3" box="[417,470,1494,1517]" pageId="11" pageNumber="12">Lake</collectingMunicipality>
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<collectingRegion id="4C37F8122A78A431FE17FA4BFD890FC3" box="[478,543,1494,1517]" country="Macedonia" name="Ohrid" pageId="11" pageNumber="12">Ohrid</collectingRegion>
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,
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<location id="8B2C602B2A78A431FDE3FA4BFD6D0FC3" LSID="urn:lsid:plazi:treatment:065A87E62A78A437FF5EFA14FD440F8E:8B2C602B2A78A431FDE3FA4BFD6D0FC3" box="[554,763,1494,1517]" country="Macedonia" municipality="Lake" name="Bay of Ljubanishta" pageId="11" pageNumber="12" stateProvince="Ohrid">Bay of Ljubanishta</location>
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, mud and sand,
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<elevation id="05DED1C32A78A431FC63FA4BFBB00FC3" box="[938,1062,1494,1517]" metricMagnitude="1" metricUnit="m" metricValue="1.3" pageId="11" pageNumber="12" unit="m" value="13.0">
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<quantity id="490B9B152A78A431FC63FA4BFC770FC3" box="[938,993,1494,1517]" metricMagnitude="1" metricUnit="m" metricValue="1.3" pageId="11" pageNumber="12" unit="m" value="13.0">13 m</quantity>
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depth
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</elevation>
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,
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<date id="FA4D10302A78A431FBFBFA4BFB280FC3" box="[1074,1214,1494,1517]" pageId="11" pageNumber="12" value="2007-04-02">
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<collectingDate id="EA09E9D82A78A431FBFBFA4BFB280FC3" box="[1074,1214,1494,1517]" pageId="11" pageNumber="12" value="2007-04-02">2 April 2007</collectingDate>
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</date>
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||
, collector
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<collectorName id="230653262A78A431FAE7FA4BFA0A0FC3" box="[1326,1436,1494,1517]" pageId="11" pageNumber="12">
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<emphasis id="BC87EAE22A78A431FAE7FA4BFA000FC3" box="[1326,1430,1494,1517]" italics="true" pageId="11" pageNumber="12">Z. Levkov</emphasis>
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.
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||
</collectorName>
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||
(
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||
<collectorName id="230653262A78A431FF07FA6BFEFA0C23" box="[206,364,1526,1549]" pageId="11" pageNumber="12">Accession No.</collectorName>
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MKNDC 1202;
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<typeStatus id="514888522A78A431FDD6FA6BFD160C23" box="[543,640,1526,1549]" pageId="11" pageNumber="12" type="holotype">holotype</typeStatus>
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||
: slide MKNDC! 001202/1; isotype: slide BM! 101633)
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||
</materialsCitation>
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||
.
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||
</paragraph>
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||
<paragraph id="8E4C36F02A78A431FF5EF9A0FAF30D48" blockId="11.[151,1436,1597,2010]" pageId="11" pageNumber="12">
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Frustules rectangular in girdle view. Valves broadly elliptic to rhombic-lanceolate with not to weakly protracted, moderately rounded valve ends. Valve length
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<quantity id="490B9B152A78A431FCF3F9F9FC770C50" box="[826,993,1636,1662]" metricMagnitude="-2" metricUnit="m" metricValue="2.5" metricValueMax="2.85" metricValueMin="2.15" pageId="11" pageNumber="12" unit="mm" value="25.0" valueMax="28.5" valueMin="21.5">21.5–28.5 µm</quantity>
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, width 7.0–
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<quantity id="490B9B152A78A431FBA7F9F9FB530C50" box="[1134,1221,1636,1662]" metricMagnitude="-3" metricUnit="m" metricValue="9.5" pageId="11" pageNumber="12" unit="mm" value="9.5">9.5 µm</quantity>
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. Axial area linear, broad, expanding abruptly into a rectangular central area. Central area forming broad fascia, expanded to valve margins. Terminal area moderately large, clearly distinguishable in LM view, semi-circular in shape. Raphe linear to weakly curved, filiform, with distinct, distantly positioned and teardrop-shaped central endings. Terminal pores indistinct. Striae coarse, strongly radiate in the middle, becoming parallel to convergent near valve ends. Striae distantly spaced throughout,
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<quantity id="490B9B152A78A431FC4FF8B8FC760D11" box="[902,992,1829,1855]" metricMagnitude="-1" metricUnit="m" metricValue="2.286" metricValueMax="2.54" metricValueMin="2.032" pageId="11" pageNumber="12" unit="in" value="9.0" valueMax="10.0" valueMin="8.0">8–10 in</quantity>
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<quantity id="490B9B152A78A431FC2EF8B8FBA10D11" box="[999,1079,1829,1855]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="11" pageNumber="12" unit="mm" value="10.0">10 µm</quantity>
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. Interstriae broad, of the same width as striae or even wider in longer valves. Lineolae composing the striae not discernible in LM view.
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</paragraph>
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<paragraph id="8E4C36F02A78A436FF0FF8EFFB220B62" blockId="11.[151,1436,1597,2010]" lastBlockId="12.[151,1436,152,680]" lastPageId="12" lastPageNumber="13" pageId="11" pageNumber="12">
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SEM: Externally, valve face flat. Terminal area expanding onto valve face (
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<figureCitation id="16C82A752A78A431FB9FF8EFFB260DA2" box="[1110,1200,1906,1932]" captionStart="FIGURES 64–68" captionStartId="38.[151,269,1618,1642]" captionTargetBox="[264,1323,194,1594]" captionTargetId="figure-139@38.[264,1323,194,1594]" captionTargetPageId="38" captionText="FIGURES 64–68: SEM micrographs. Figs 64–66. Hippodonta latelanceolata (type material). Fig. 64. External view of entire valve. Terminal pores of raphe deflected towards secondary valve side. Fig. 65. Close-up of central area of valve in Fig. 64. Central raphe endings with pronounced teardrop-shaped depressions. Fig. 66. External view of valve depicting complete mantle. Pronounced hyaline area present throughout valve mantle. Fig. 67. Hippodonta lueneburgensis. External view of complete frustule showing broad unornamented girdle. Fig. 68. Hippodonta costulatiformis var. costulatiformis. External view of complete frustule showing prominent hyaline area present on valve mantle and broad, unornamented girdle. Scale bars in Figs 64, 66, 68 = 5 µm; Fig. 67 = 10 µm; Fig. 65 = 2 µm." figureDoi="http://doi.org/10.5281/zenodo.5071982" httpUri="https://zenodo.org/record/5071982/files/figure.png" pageId="11" pageNumber="12">Fig. 64</figureCitation>
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||
). Terminal pores of raphe advancing into the terminal area and slightly deflected towards secondary valve side (where Voigt discontinuities are present). Central raphe endings prominent teardrop depressions (
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||
<figureCitation id="16C82A752A78A431FBBFF85DFB590DF4" box="[1142,1231,1984,2010]" captionStart="FIGURES 64–68" captionStartId="38.[151,269,1618,1642]" captionTargetBox="[264,1323,194,1594]" captionTargetId="figure-139@38.[264,1323,194,1594]" captionTargetPageId="38" captionText="FIGURES 64–68: SEM micrographs. Figs 64–66. Hippodonta latelanceolata (type material). Fig. 64. External view of entire valve. Terminal pores of raphe deflected towards secondary valve side. Fig. 65. Close-up of central area of valve in Fig. 64. Central raphe endings with pronounced teardrop-shaped depressions. Fig. 66. External view of valve depicting complete mantle. Pronounced hyaline area present throughout valve mantle. Fig. 67. Hippodonta lueneburgensis. External view of complete frustule showing broad unornamented girdle. Fig. 68. Hippodonta costulatiformis var. costulatiformis. External view of complete frustule showing prominent hyaline area present on valve mantle and broad, unornamented girdle. Scale bars in Figs 64, 66, 68 = 5 µm; Fig. 67 = 10 µm; Fig. 65 = 2 µm." figureDoi="http://doi.org/10.5281/zenodo.5071982" httpUri="https://zenodo.org/record/5071982/files/figure.png" pageId="11" pageNumber="12">Fig. 65</figureCitation>
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). Striae biseriate, with lineolae alternating along the stria. Lineolae simple, linear and quite narrow, of equal length on valve face and mantle,
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<quantity id="490B9B152A7FA436FEA8FF23FE5F0AF6" box="[353,457,190,216]" metricMagnitude="0" metricUnit="m" metricValue="1.2065" metricValueMax="1.27" metricValueMin="1.143" pageId="12" pageNumber="13" unit="in" value="47.5" valueMax="50.0" valueMin="45.0">45–50 in</quantity>
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||
<quantity id="490B9B152A7FA436FE18FF23FDB70AF6" box="[465,545,190,216]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="12" pageNumber="13" unit="mm" value="10.0">10 µm</quantity>
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||
. Some lineolae, close to raphe, positioned perpendicular with respect to the rest of the lineolae within the stria. Biseriate structure of striae continuing onto valve mantle. The row of lineolae going around valve apex, positioned on apical valve mantle, rarely observed as biseriate. Quite prominent hyaline area present throughout valve mantle, absent of any structure (
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||
<figureCitation id="16C82A752A7FA436FB86FEAFFB310B62" box="[1103,1191,306,332]" captionStart="FIGURES 64–68" captionStartId="38.[151,269,1618,1642]" captionTargetBox="[264,1323,194,1594]" captionTargetId="figure-139@38.[264,1323,194,1594]" captionTargetPageId="38" captionText="FIGURES 64–68: SEM micrographs. Figs 64–66. Hippodonta latelanceolata (type material). Fig. 64. External view of entire valve. Terminal pores of raphe deflected towards secondary valve side. Fig. 65. Close-up of central area of valve in Fig. 64. Central raphe endings with pronounced teardrop-shaped depressions. Fig. 66. External view of valve depicting complete mantle. Pronounced hyaline area present throughout valve mantle. Fig. 67. Hippodonta lueneburgensis. External view of complete frustule showing broad unornamented girdle. Fig. 68. Hippodonta costulatiformis var. costulatiformis. External view of complete frustule showing prominent hyaline area present on valve mantle and broad, unornamented girdle. Scale bars in Figs 64, 66, 68 = 5 µm; Fig. 67 = 10 µm; Fig. 65 = 2 µm." figureDoi="http://doi.org/10.5281/zenodo.5071982" httpUri="https://zenodo.org/record/5071982/files/figure.png" pageId="12" pageNumber="13">Fig. 66</figureCitation>
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||
).
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||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C6E9657B2A7FA437FF0FFEC5FEA80AF6" lastPageId="13" lastPageNumber="14" pageId="12" pageNumber="13" type="distribution">
|
||
<paragraph id="8E4C36F02A7FA436FF0FFEC5FC7D0BB4" blockId="12.[151,1436,152,680]" pageId="12" pageNumber="13">
|
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<emphasis id="BC87EAE22A7FA436FF0FFEC5FEC90B5C" bold="true" box="[198,351,344,370]" pageId="12" pageNumber="13">Distribution</emphasis>
|
||
:—
|
||
<taxonomicName id="49F34D732A7FA436FE4DFEC4FD540B5C" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[388,706,345,370]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="species" species="latelanceolata">
|
||
<emphasis id="BC87EAE22A7FA436FE4DFEC4FD540B5C" box="[388,706,345,370]" italics="true" pageId="12" pageNumber="13">Hippodonta latelanceolata</emphasis>
|
||
</taxonomicName>
|
||
has so far only been observed in Lake
|
||
<collectingRegion id="4C37F8122A7FA436FB68FEC4FB7F0B5D" box="[1185,1257,345,371]" country="Macedonia" name="Ohrid" pageId="12" pageNumber="13">Ohrid</collectingRegion>
|
||
,
|
||
<collectingCountry id="F6E476602A7FA436FB3EFEC4FAEB0B5D" box="[1271,1405,345,371]" name="Macedonia" pageId="12" pageNumber="13">Macedonia</collectingCountry>
|
||
. It was usually observed on silt substrate in deeper parts, between
|
||
<quantity id="490B9B152A7FA436FCB5FE1DFC700BB4" box="[892,998,384,410]" metricMagnitude="1" metricUnit="m" metricValue="2.5" metricValueMax="4.0" metricValueMin="1.0" pageId="12" pageNumber="13" unit="m" value="25.0" valueMax="40.0" valueMin="10.0">
|
||
10–
|
||
<specimenCount id="98F5FD792A7FA436FC6EFE1DFC700BB4" box="[935,998,384,410]" pageId="12" pageNumber="13" type="generic">40 m</specimenCount>
|
||
</quantity>
|
||
.
|
||
</paragraph>
|
||
<paragraph id="8E4C36F02A7FA436FF0FFE3BFEA20886" blockId="12.[151,1436,152,680]" pageId="12" pageNumber="13">
|
||
<emphasis id="BC87EAE22A7FA436FF0FFE3BFEFA0BEE" bold="true" box="[198,364,422,448]" pageId="12" pageNumber="13">Observations</emphasis>
|
||
:—
|
||
<taxonomicName id="49F34D732A7FA436FE5BFE3AFD420BEE" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[402,724,423,448]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="species" species="latelanceolata">
|
||
<emphasis id="BC87EAE22A7FA436FE5BFE3AFD420BEE" box="[402,724,423,448]" italics="true" pageId="12" pageNumber="13">Hippodonta latelanceolata</emphasis>
|
||
</taxonomicName>
|
||
resembles
|
||
<taxonomicName id="49F34D732A7FA436FCAEFE3AFAAC0BEE" authority="var. costulatiformis" box="[871,1338,422,448]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="costulatiformis">
|
||
<emphasis id="BC87EAE22A7FA436FCAEFE3AFCEA0BEE" box="[871,892,423,448]" italics="true" pageId="12" pageNumber="13">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7FA436FC5BFE3AFBD40BEE" box="[914,1090,423,448]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7FA436FB43FE3AFAAC0BEE" box="[1162,1338,423,448]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
</taxonomicName>
|
||
Lange- Bert., Metzeltin & Witkowski in
|
||
<bibRefCitation id="EA624B012A7FA436FDD7FE50FC090BC9" author="Lange-Bertalot, H. & Metzeltin, D. & Witkowski, A." box="[542,927,461,487]" pageId="12" pageNumber="13" pagination="247 - 276" refId="ref27546" refString="Lange-Bertalot, H., Metzeltin, D. & Witkowski, A. (1996) Hippodonta gen. nov. Iconographia Diatomologica 4: 247 - 276." type="journal article" year="1996">
|
||
Lange-Bertalot
|
||
<emphasis id="BC87EAE22A7FA436FD11FE50FC820BC8" box="[728,788,461,486]" italics="true" pageId="12" pageNumber="13">et al.</emphasis>
|
||
(1996: 254
|
||
</bibRefCitation>
|
||
, 255, figs 1: 27–29; this study
|
||
<figureCitation id="16C82A752A7FA436FAC7FE50FA020BC9" box="[1294,1428,461,487]" captionStart="FIGURES 27–63" captionStartId="37.[151,269,1738,1762]" captionTargetBox="[264,1323,194,1706]" captionTargetId="figure-52@37.[264,1323,194,1706]" captionTargetPageId="37" captionText="FIGURES 27–63: LM micrographs. Figs 27–44. Hippodonta latelanceolata (type material). Fig. 30. Complete frustule in girdle view. Figs 45–63. Hippodonta costulatiformis var. costulatiformis. Fig. 63. Complete frustule in girdle view. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5071980" httpUri="https://zenodo.org/record/5071980/files/figure.png" pageId="12" pageNumber="13">Figs 45–63</figureCitation>
|
||
) with respect to valve morphology (valve shape, striae pattern, axial and central area). Differences can be found in valve width (
|
||
<taxonomicName id="49F34D732A7FA436FE57FD87FDFC081D" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[414,618,538,563]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="species" species="latelanceolata">
|
||
<emphasis id="BC87EAE22A7FA436FE57FD87FDFC081D" box="[414,618,538,563]" italics="true" pageId="12" pageNumber="13">H. latelanceolata</emphasis>
|
||
</taxonomicName>
|
||
being broader for any given valve length than
|
||
<taxonomicName id="49F34D732A7FA436FB5DFD87FED10874" authority="var. costulatiformis" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="costulatiformis">
|
||
<emphasis id="BC87EAE22A7FA436FB5DFD87FB3F081D" box="[1172,1193,538,563]" italics="true" pageId="12" pageNumber="13">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7FA436FB70FD87FAFF081D" box="[1209,1385,538,563]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7FA436FF5EFDDCFED10874" box="[151,327,577,602]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
</taxonomicName>
|
||
). However, the main differential character is the striae structure: in
|
||
<taxonomicName id="49F34D732A7FA436FB96FDDCFABD0874" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[1119,1323,577,602]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="species" species="latelanceolata">
|
||
<emphasis id="BC87EAE22A7FA436FB96FDDCFABD0874" box="[1119,1323,577,602]" italics="true" pageId="12" pageNumber="13">H. latelanceolata</emphasis>
|
||
</taxonomicName>
|
||
the striae are biseriate, while in
|
||
<taxonomicName id="49F34D732A7FA436FE68FDF5FCF208AF" authority="var. costulatiformis" box="[417,868,616,642]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="costulatiformis">
|
||
<emphasis id="BC87EAE22A7FA436FE68FDF5FDEE08AF" box="[417,632,616,641]" italics="true" pageId="12" pageNumber="13">H. costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7FA436FD7AFDF5FCF208AF" box="[691,868,616,641]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
</taxonomicName>
|
||
the striae are uniseriate, a character observable only in SEM.
|
||
</paragraph>
|
||
<paragraph id="8E4C36F02A7FA436FF5EFC9FFDBE096D" blockId="12.[151,1436,770,835]" pageId="12" pageNumber="13">
|
||
<taxonomicName id="49F34D732A7FA436FF5EFC9FFB120932" authority="var. costulatiformis Lange-Bert., Metzeltin & Witkowski" authorityName="Lange-Bert., Metzeltin & Witkowski" box="[151,1156,770,796]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="costulatiformis">
|
||
<emphasis id="BC87EAE22A7FA436FF5EFC9FFD590932" bold="true" box="[151,719,770,796]" pageId="12" pageNumber="13">
|
||
<emphasis id="BC87EAE22A7FA436FF5EFC9FFE4B0932" bold="true" box="[151,477,770,796]" italics="true" pageId="12" pageNumber="13">Hippodonta costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7FA436FDD4FC9FFD590932" bold="true" box="[541,719,770,796]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
</emphasis>
|
||
Lange-Bert., Metzeltin & Witkowski
|
||
</taxonomicName>
|
||
(1996: 254, 255, figs 1: 27–29; 4: 21, 22) (
|
||
<figureCitation id="16C82A752A7FA436FEBBFCB4FE61096D" box="[370,503,809,835]" captionStart="FIGURES 27–63" captionStartId="37.[151,269,1738,1762]" captionTargetBox="[264,1323,194,1706]" captionTargetId="figure-52@37.[264,1323,194,1706]" captionTargetPageId="37" captionText="FIGURES 27–63: LM micrographs. Figs 27–44. Hippodonta latelanceolata (type material). Fig. 30. Complete frustule in girdle view. Figs 45–63. Hippodonta costulatiformis var. costulatiformis. Fig. 63. Complete frustule in girdle view. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5071980" httpUri="https://zenodo.org/record/5071980/files/figure.png" pageId="12" pageNumber="13">Figs 45–63</figureCitation>
|
||
,
|
||
<figureCitation id="16C82A752A7FA436FDCBFCB4FDB6096D" box="[514,544,809,835]" captionStart="FIGURES 64–68" captionStartId="38.[151,269,1618,1642]" captionTargetBox="[264,1323,194,1594]" captionTargetId="figure-139@38.[264,1323,194,1594]" captionTargetPageId="38" captionText="FIGURES 64–68: SEM micrographs. Figs 64–66. Hippodonta latelanceolata (type material). Fig. 64. External view of entire valve. Terminal pores of raphe deflected towards secondary valve side. Fig. 65. Close-up of central area of valve in Fig. 64. Central raphe endings with pronounced teardrop-shaped depressions. Fig. 66. External view of valve depicting complete mantle. Pronounced hyaline area present throughout valve mantle. Fig. 67. Hippodonta lueneburgensis. External view of complete frustule showing broad unornamented girdle. Fig. 68. Hippodonta costulatiformis var. costulatiformis. External view of complete frustule showing prominent hyaline area present on valve mantle and broad, unornamented girdle. Scale bars in Figs 64, 66, 68 = 5 µm; Fig. 67 = 10 µm; Fig. 65 = 2 µm." figureDoi="http://doi.org/10.5281/zenodo.5071982" httpUri="https://zenodo.org/record/5071982/files/figure.png" pageId="12" pageNumber="13">68</figureCitation>
|
||
)
|
||
</paragraph>
|
||
<paragraph id="8E4C36F02A7FA436FF5EFCEBFE720F3D" blockId="12.[151,1436,886,1956]" pageId="12" pageNumber="13">
|
||
Frustules rectangular in girdle view. Valves narrowly lanceolate to strictly lanceolate, gradually narrowing towards valve apices. Valve apices broadly cuneate, not protracted. Valve length 18.0–
|
||
<quantity id="490B9B152A7FA436FB40FC00FB7B0999" box="[1161,1261,925,951]" metricMagnitude="-2" metricUnit="m" metricValue="3.55" pageId="12" pageNumber="13" unit="mm" value="35.5">35.5 µm</quantity>
|
||
, width 5.6–7.0 µm. Axial area narrow, abruptly expanding into a transverse rectangular central area. Central area forming well-defined fascia, expanding to valve margins at middle of valve, in some specimens broadened near valve margins. Rarely, the fascia is interrupted by one shortened stria on one valve side. Terminal area moderately large, distinguishable in LM, triangular in shape. Raphe linear, filiform, with distantly positioned, small teardrop-shaped central endings. Terminal pores of raphe, when discernible in LM, small and round. Striae coarse with a variable pattern, parallel to strongly radiate at middle, becoming parallel to weakly convergent towards valve ends. Striae evenly spaced throughout,
|
||
<quantity id="490B9B152A7FA436FC83FB31FC3C0EE8" box="[842,938,1196,1222]" metricMagnitude="-1" metricUnit="m" metricValue="2.159" metricValueMax="2.54" metricValueMin="1.778" pageId="12" pageNumber="13" unit="in" value="8.5" valueMax="10.0" valueMin="7.0">7–10 in</quantity>
|
||
<quantity id="490B9B152A7FA436FC7AFB31FC7D0EE8" box="[947,1003,1196,1222]" metricMagnitude="1" metricUnit="m" metricValue="1.0" pageId="12" pageNumber="13" unit="m" value="10.0">10 µ</quantity>
|
||
m. Interstriae broad, clearly more pronounced than striae, only in shorter valves the interstriae of the same width as striae. Lineolae composing striae not discernible in LM.
|
||
</paragraph>
|
||
<paragraph id="8E4C36F02A7FA436FF0FFABDFCA40F80" blockId="12.[151,1436,886,1956]" pageId="12" pageNumber="13">
|
||
SEM: Externally, valve face flat (
|
||
<figureCitation id="16C82A752A7FA436FD93FABDFD220F14" box="[602,692,1312,1338]" captionStart="FIGURES 64–68" captionStartId="38.[151,269,1618,1642]" captionTargetBox="[264,1323,194,1594]" captionTargetId="figure-139@38.[264,1323,194,1594]" captionTargetPageId="38" captionText="FIGURES 64–68: SEM micrographs. Figs 64–66. Hippodonta latelanceolata (type material). Fig. 64. External view of entire valve. Terminal pores of raphe deflected towards secondary valve side. Fig. 65. Close-up of central area of valve in Fig. 64. Central raphe endings with pronounced teardrop-shaped depressions. Fig. 66. External view of valve depicting complete mantle. Pronounced hyaline area present throughout valve mantle. Fig. 67. Hippodonta lueneburgensis. External view of complete frustule showing broad unornamented girdle. Fig. 68. Hippodonta costulatiformis var. costulatiformis. External view of complete frustule showing prominent hyaline area present on valve mantle and broad, unornamented girdle. Scale bars in Figs 64, 66, 68 = 5 µm; Fig. 67 = 10 µm; Fig. 65 = 2 µm." figureDoi="http://doi.org/10.5281/zenodo.5071982" httpUri="https://zenodo.org/record/5071982/files/figure.png" pageId="12" pageNumber="13">Fig. 68</figureCitation>
|
||
). Striae uniseriate throughout valve face and mantle. Lineolae quite narrow, slightly longer on valve face than on valve mantle, c.
|
||
<quantity id="490B9B152A7FA436FC73FADBFC600F4E" box="[954,1014,1350,1376]" metricMagnitude="0" metricUnit="m" metricValue="1.27" pageId="12" pageNumber="13" unit="in" value="50.0">50 in</quantity>
|
||
<quantity id="490B9B152A7FA436FC37FADBFBD90F4E" box="[1022,1103,1350,1376]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="12" pageNumber="13" unit="mm" value="10.0">10 µm</quantity>
|
||
. Row of lineolae positioned on apical valve mantle, also uniseriate. Quite prominent hyaline area present throughout valve mantle, absent of any structure. Girdle band quite broad, unornamented.
|
||
</paragraph>
|
||
<paragraph id="8E4C36F02A7FA436FF0FFA27FE850C66" blockId="12.[151,1436,886,1956]" pageId="12" pageNumber="13">
|
||
<emphasis id="BC87EAE22A7FA436FF0FFA27FEC90FFA" bold="true" box="[198,351,1466,1492]" pageId="12" pageNumber="13">Distribution</emphasis>
|
||
:—According to
|
||
<bibRefCitation id="EA624B012A7FA436FDF8FA27FC1C0FFA" author="Lange-Bertalot, H. & Metzeltin, D. & Witkowski, A." box="[561,906,1466,1492]" pageId="12" pageNumber="13" pagination="247 - 276" refId="ref27546" refString="Lange-Bertalot, H., Metzeltin, D. & Witkowski, A. (1996) Hippodonta gen. nov. Iconographia Diatomologica 4: 247 - 276." type="journal article" year="1996">
|
||
Lange-Bertalot
|
||
<emphasis id="BC87EAE22A7FA436FD39FA26FCA60FFA" box="[752,816,1467,1492]" italics="true" pageId="12" pageNumber="13">et al.</emphasis>
|
||
(1996)
|
||
</bibRefCitation>
|
||
and
|
||
<bibRefCitation id="EA624B012A7FA436FC06FA27FB4D0FFA" author="Lange-Bertalot, H." box="[975,1243,1466,1492]" pageId="12" pageNumber="13" pagination="1 - 526" refId="ref27516" refString="Lange-Bertalot, H. (2001) Navicula sensu stricto. 10 genera separated from Navicula sensu lato. Frustulia. Diatoms of Europe 2: 1 - 526." type="journal article" year="2001">Lange-Bertalot (2001)</bibRefCitation>
|
||
this taxon was reported only from Northern
|
||
<collectingCountry id="F6E476602A7FA436FE36FA7CFDF90FD5" box="[511,623,1505,1531]" name="Germany" pageId="12" pageNumber="13">Germany</collectingCountry>
|
||
and near
|
||
<collectingRegion id="4C37F8122A7FA436FD23FA7CFCAC0FD5" box="[746,826,1505,1531]" country="Germany" name="Berlin" pageId="12" pageNumber="13">Berlin</collectingRegion>
|
||
. Among the ancient lakes,
|
||
<taxonomicName id="49F34D732A7FA436FB41FA7CFEDC0C0F" authority="var. costulatiformis" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="costulatiformis">
|
||
<emphasis id="BC87EAE22A7FA436FB41FA7CFB0B0FD4" box="[1160,1181,1505,1530]" italics="true" pageId="12" pageNumber="13">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7FA436FB67FA7CFAF30FD4" box="[1198,1381,1505,1530]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7FA436FF5EF995FEDC0C0F" box="[151,330,1544,1569]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
</taxonomicName>
|
||
was observed only from Lake
|
||
<collectingRegion id="4C37F8122A7FA436FD76F995FC9E0C0C" box="[703,776,1544,1570]" country="Macedonia" name="Ohrid" pageId="12" pageNumber="13">Ohrid</collectingRegion>
|
||
,
|
||
<collectingCountry id="F6E476602A7FA436FCDDF995FC0D0C0C" box="[788,923,1544,1570]" name="Macedonia" pageId="12" pageNumber="13">Macedonia</collectingCountry>
|
||
, on silt or sand substrate on depths greater than
|
||
<specimenCount id="98F5FD792A7FA436FF18F9B3FE850C66" box="[209,275,1582,1608]" pageId="12" pageNumber="13" type="generic">
|
||
<quantity id="490B9B152A7FA436FF18F9B3FE990C66" box="[209,271,1582,1608]" metricMagnitude="1" metricUnit="m" metricValue="1.0" pageId="12" pageNumber="13" unit="m" value="10.0">10 m</quantity>
|
||
.
|
||
</specimenCount>
|
||
</paragraph>
|
||
<paragraph id="8E4C36F02A7FA436FF0FF9C8FE470D8A" blockId="12.[151,1436,886,1956]" pageId="12" pageNumber="13">
|
||
<emphasis id="BC87EAE22A7FA436FF0FF9C8FEFA0C41" bold="true" box="[198,364,1621,1647]" pageId="12" pageNumber="13">Observations</emphasis>
|
||
:—
|
||
<taxonomicName id="49F34D732A7FA436FE5BF9C8FC770C40" authority="var. costulatiformis" box="[402,993,1621,1647]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="costulatiformis">
|
||
<emphasis id="BC87EAE22A7FA436FE5BF9C8FD770C40" box="[402,737,1621,1646]" italics="true" pageId="12" pageNumber="13">Hippodonta costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7FA436FCFBF9C8FC770C40" box="[818,993,1621,1646]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
</taxonomicName>
|
||
resembles
|
||
<taxonomicName id="49F34D732A7FA436FBB7F9C8FEB70CBB" authorityName="Pavlov & Levkov & Williams & Edlund" authorityYear="2013" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="densistriata">
|
||
<emphasis id="BC87EAE22A7FA436FBB7F9C8FB050C40" box="[1150,1171,1621,1646]" italics="true" pageId="12" pageNumber="13">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7FA436FB64F9C8FACB0C40" box="[1197,1373,1621,1646]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7FA436FF5EF9E1FEB70CBB" box="[151,289,1660,1685]" italics="true" pageId="12" pageNumber="13">densistriata</emphasis>
|
||
</taxonomicName>
|
||
(this study,
|
||
<figureCitation id="16C82A752A7FA436FE79F9E1FDA50CB8" box="[432,563,1660,1686]" captionStart="FIGURES 69–95" captionStartId="39.[151,270,1125,1149]" captionTargetBox="[264,1323,194,1102]" captionTargetId="figure-49@39.[264,1323,194,1102]" captionTargetPageId="39" captionText="FIGURES 69–95: LM micrographs. Figs 69–83. Hippodonta costulatiformis var. densistriata (type material). Figs 82, 83. Images of complete frustule in girdle view. Figs 84–95. Hippodonta naviculiformis (type material). Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5071984" httpUri="https://zenodo.org/record/5071984/files/figure.png" pageId="12" pageNumber="13">Figs 69–83</figureCitation>
|
||
) from Lake Prespa with respect to valve outline. Nonetheless, the striae in
|
||
<taxonomicName id="49F34D732A7FA436FF5EF93EFDA60C92" authorityName="Pavlov & Levkov & Williams & Edlund" authorityYear="2013" box="[151,560,1698,1724]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="densistriata">
|
||
<emphasis id="BC87EAE22A7FA436FF5EF93EFF3A0C92" box="[151,172,1699,1724]" italics="true" pageId="12" pageNumber="13">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7FA436FF72F93EFEFD0C92" box="[187,363,1699,1724]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7FA436FE6FF93EFDA60C92" box="[422,560,1699,1724]" italics="true" pageId="12" pageNumber="13">densistriata</emphasis>
|
||
</taxonomicName>
|
||
are more densely spaced and the central raphe endings consistently closer compared to the distantly positioned central endings of the raphe in
|
||
<taxonomicName id="49F34D732A7FA436FC05F954FA020CCC" authority="var. costulatiformis" box="[972,1428,1737,1763]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="costulatiformis">
|
||
<emphasis id="BC87EAE22A7FA436FC05F954FC770CCC" box="[972,993,1737,1762]" italics="true" pageId="12" pageNumber="13">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7FA436FC38F954FB320CCC" box="[1009,1188,1737,1762]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7FA436FB28F954FA020CCC" box="[1249,1428,1737,1762]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
</taxonomicName>
|
||
. Furthermore,
|
||
<taxonomicName id="49F34D732A7FA436FEF2F96DFC950D27" authority="var. costulatiformis" box="[315,771,1776,1802]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="costulatiformis">
|
||
<emphasis id="BC87EAE22A7FA436FEF2F96DFEC60D27" box="[315,336,1776,1801]" italics="true" pageId="12" pageNumber="13">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7FA436FEA9F96DFD850D27" box="[352,531,1776,1801]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7FA436FD99F96DFC950D27" box="[592,771,1776,1801]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
</taxonomicName>
|
||
also resembles
|
||
<taxonomicName id="49F34D732A7FA436FC0BF96DFB070D27" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[962,1169,1776,1802]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="species" species="latelanceolata">
|
||
<emphasis id="BC87EAE22A7FA436FC0BF96DFC410D27" box="[962,983,1776,1801]" italics="true" pageId="12" pageNumber="13">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7FA436FC2EF96DFB070D27" box="[999,1169,1776,1801]" italics="true" pageId="12" pageNumber="13">latelanceolata</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<figureCitation id="16C82A752A7FA436FB6AF96DFABA0D24" box="[1187,1324,1776,1802]" captionStart="FIGURES 27–63" captionStartId="37.[151,269,1738,1762]" captionTargetBox="[264,1323,194,1706]" captionTargetId="figure-52@37.[264,1323,194,1706]" captionTargetPageId="37" captionText="FIGURES 27–63: LM micrographs. Figs 27–44. Hippodonta latelanceolata (type material). Fig. 30. Complete frustule in girdle view. Figs 45–63. Hippodonta costulatiformis var. costulatiformis. Fig. 63. Complete frustule in girdle view. Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5071980" httpUri="https://zenodo.org/record/5071980/files/figure.png" pageId="12" pageNumber="13">Figs 27–44</figureCitation>
|
||
) in valve outline, striae pattern and the presence and shape of the fascia. Still, the latter taxon has a clearly more rhombic valve outline in addition to broader valves (7.0–
|
||
<quantity id="490B9B152A7FA436FCFBF8A0FC130D79" box="[818,901,1853,1879]" metricMagnitude="-3" metricUnit="m" metricValue="9.5" pageId="12" pageNumber="13" unit="mm" value="9.5">9.5 µm</quantity>
|
||
in
|
||
<taxonomicName id="49F34D732A7FA436FC63F8A0FBE30D78" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[938,1141,1853,1878]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="species" species="latelanceolata">
|
||
<emphasis id="BC87EAE22A7FA436FC63F8A0FBE30D78" box="[938,1141,1853,1878]" italics="true" pageId="12" pageNumber="13">H. latelanceolata</emphasis>
|
||
</taxonomicName>
|
||
compared to 5.6–7.0 µm in
|
||
<taxonomicName id="49F34D732A7FA436FF7CF8F9FDE50D53" authority="var. costulatiformis" box="[181,627,1892,1918]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="costulatiformis">
|
||
<emphasis id="BC87EAE22A7FA436FF7CF8F9FF5C0D53" box="[181,202,1892,1917]" italics="true" pageId="12" pageNumber="13">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7FA436FF10F8F9FE1F0D53" box="[217,393,1892,1917]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7FA436FE0AF8F9FDE50D53" box="[451,627,1892,1917]" italics="true" pageId="12" pageNumber="13">costulatiformis</emphasis>
|
||
</taxonomicName>
|
||
). Moreover, the striae of
|
||
<taxonomicName id="49F34D732A7FA436FC57F8F9FBFC0D53" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[926,1130,1892,1918]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="12" pageNumber="13" phylum="Bacillariophyta" rank="species" species="latelanceolata">
|
||
<emphasis id="BC87EAE22A7FA436FC57F8F9FC250D53" box="[926,947,1892,1917]" italics="true" pageId="12" pageNumber="13">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7FA436FC0BF8F9FBFC0D53" box="[962,1130,1892,1917]" italics="true" pageId="12" pageNumber="13">latelanceolata</emphasis>
|
||
</taxonomicName>
|
||
are more pronounced and have a coarser appearance.
|
||
</paragraph>
|
||
<paragraph id="8E4C36F02A7EA437FF5EFF0AFEA80AF6" blockId="13.[151,1436,151,216]" pageId="13" pageNumber="14">
|
||
<taxonomicName id="49F34D732A7EA437FF5EFF0AFB770A9C" authority="A. Pavlov, Levkov, D.M. Williams & Edlund" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[151,1249,151,178]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="variety" species="costulatiformis" status="var. nov." variety="densistriata">
|
||
<emphasis id="BC87EAE22A7EA437FF5EFF0AFD200A9F" bold="true" box="[151,694,151,177]" pageId="13" pageNumber="14">
|
||
<emphasis id="BC87EAE22A7EA437FF5EFF0AFE730A9F" bold="true" box="[151,485,151,177]" italics="true" pageId="13" pageNumber="14">Hippodonta costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7EA437FDE0FF0AFD200A9F" bold="true" box="[553,694,151,177]" italics="true" pageId="13" pageNumber="14">densistriata</emphasis>
|
||
</emphasis>
|
||
A. Pavlov, Levkov, D.M. Williams & Edlund
|
||
</taxonomicName>
|
||
,
|
||
<emphasis id="BC87EAE22A7EA437FB27FF05FAC10A9F" box="[1262,1367,152,177]" italics="true" pageId="13" pageNumber="14">
|
||
<taxonomicNameLabel id="A7B457992A7EA437FB27FF05FAC10A9F" box="[1262,1367,152,177]" pageId="13" pageNumber="14" rank="variety">var. nov.</taxonomicNameLabel>
|
||
</emphasis>
|
||
(
|
||
<figureCitation id="16C82A752A7EA437FAA1FF05FF770AF6" captionStart="FIGURES 69–95" captionStartId="39.[151,270,1125,1149]" captionTargetBox="[264,1323,194,1102]" captionTargetId="figure-49@39.[264,1323,194,1102]" captionTargetPageId="39" captionText="FIGURES 69–95: LM micrographs. Figs 69–83. Hippodonta costulatiformis var. densistriata (type material). Figs 82, 83. Images of complete frustule in girdle view. Figs 84–95. Hippodonta naviculiformis (type material). Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5071984" httpUri="https://zenodo.org/record/5071984/files/figure.png" pageId="13" pageNumber="14">Figs 69–83</figureCitation>
|
||
,
|
||
<figureCitation id="16C82A752A7EA437FF24FF23FEA00AF6" box="[237,310,190,216]" captionStart="FIGURES 96–101" captionStartId="40.[151,269,1503,1527]" captionTargetBox="[264,1323,194,1479]" captionTargetId="figure-144@40.[264,1323,194,1479]" captionTargetPageId="40" captionText="FIGURES 96–101: SEM micrographs. Figs 96, 97. Hippodonta costulatiformis var. densistriata (type material). Fig. 96. External view of complete frustule showing narrow hyaline area present on valve mantle and the unornamented girdle. Fig. 97. Internal view of entire valve; striae positioned in shallow ridge depressions; interstriae strongly pronounced; helictoglossae in line with raphe slits. Figs 98–101. Hippodonta naviculiformis (type material). Figs 98, 100. External view of entire valve. Terminal pores of raphe deflected towards one valve side. Fig. 99. Internal view of entire valve. Lineolae positioned in shallow elliptical depressions. Central raphe endings simple linear and distantly positioned. Fig. 101. External view of broken frustule showing girdle unornamented. Scale bars in Fig. 96 = 2 µm; Fig. 97 = 5 µm; Figs 98–101 = 2 µm." figureDoi="http://doi.org/10.5281/zenodo.5071986" httpUri="https://zenodo.org/record/5071986/files/figure.png" pageId="13" pageNumber="14">96, 97</figureCitation>
|
||
)
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C6E9657B2A7EA437FF5EFE96FE0609FE" pageId="13" pageNumber="14" type="materials_examined">
|
||
<paragraph id="8E4C36F02A7EA437FF5EFE96FBE20B6D" blockId="13.[151,1436,267,323]" pageId="13" pageNumber="14">
|
||
<emphasis id="BC87EAE22A7EA437FF5EFE96FF590B0D" bold="true" box="[151,207,267,291]" pageId="13" pageNumber="14">Type</emphasis>
|
||
:—
|
||
<materialsCitation id="3E9B3CAD2A7EA437FF24FE91FBE60B6D" collectingDate="2003-03-25" collectorName="Z. Levkov. & Accession No." country="Macedonia" elevation="2" location="Lake Prespa" municipality="Bay of Konjsko" pageId="13" pageNumber="14" specimenCount="1" typeStatus="holotype">
|
||
<collectingCountry id="F6E476602A7EA437FF24FE91FE000B0D" box="[237,406,268,291]" name="Macedonia" pageId="13" pageNumber="14">MACEDONIA</collectingCountry>
|
||
.
|
||
<location id="8B2C602B2A7EA437FE68FE91FDB10B0D" LSID="urn:lsid:plazi:treatment:065A87E62A78A437FF5EFA14FD440F8E:8B2C602B2A7EA437FE68FE91FDB10B0D" box="[417,551,268,291]" country="Macedonia" municipality="Bay of Konjsko" name="Lake Prespa" pageId="13" pageNumber="14">Lake Prespa</location>
|
||
,
|
||
<collectingMunicipality id="6E28AC8A2A7EA437FDF8FE91FD4B0B0D" box="[561,733,268,291]" pageId="13" pageNumber="14">Bay of Konjsko</collectingMunicipality>
|
||
, mud,
|
||
<elevation id="05DED1C32A7EA437FCECFE91FC040B0D" box="[805,914,268,291]" metricMagnitude="0" metricUnit="m" metricValue="2.0" pageId="13" pageNumber="14" unit="m" value="2.0">
|
||
<quantity id="490B9B152A7EA437FCECFE91FCD80B0D" box="[805,846,268,291]" metricMagnitude="0" metricUnit="m" metricValue="2.0" pageId="13" pageNumber="14" unit="m" value="2.0">2 m</quantity>
|
||
depth
|
||
</elevation>
|
||
,
|
||
<date id="FA4D10302A7EA437FC54FE91FBD50B0D" box="[925,1091,268,291]" pageId="13" pageNumber="14" value="2003-03-25">
|
||
<collectingDate id="EA09E9D82A7EA437FC54FE91FBD50B0D" box="[925,1091,268,291]" pageId="13" pageNumber="14" value="2003-03-25">25 March 2003</collectingDate>
|
||
</date>
|
||
, collector
|
||
<collectorName id="230653262A7EA437FB7BFE91FA890B0D" box="[1202,1311,268,291]" pageId="13" pageNumber="14">
|
||
<emphasis id="BC87EAE22A7EA437FB7BFE91FA8E0B0D" box="[1202,1304,268,291]" italics="true" pageId="13" pageNumber="14">Z. Levkov</emphasis>
|
||
.
|
||
</collectorName>
|
||
(
|
||
<collectorName id="230653262A7EA437FAE4FE91FF790B6D" pageId="13" pageNumber="14">Accession No.</collectorName>
|
||
MKNDC 000537;
|
||
<typeStatus id="514888522A7EA437FE75FEB1FD880B6D" box="[444,542,300,323]" pageId="13" pageNumber="14" type="holotype">holotype</typeStatus>
|
||
: slide MKNDC! 000537/1; isotype: slide BM! 101634)
|
||
</materialsCitation>
|
||
.
|
||
</paragraph>
|
||
<paragraph id="8E4C36F02A7EA437FF5EFEEFFA11085A" blockId="13.[151,1436,370,1440]" pageId="13" pageNumber="14">
|
||
Frustules rectangular in girdle view. Valves elliptic-lanceolate, with broadly cuneate to broadly rounded, but not protracted valve ends. Valve length 17.0–29.0 µm, width
|
||
<quantity id="490B9B152A7EA437FC6CFE04FB8A0B9D" box="[933,1052,409,435]" metricMagnitude="0" metricUnit="m" metricValue="5.25" metricValueMax="5.8" metricValueMin="4.7" pageId="13" pageNumber="14" unit="m" value="5.25" valueMax="5.8" valueMin="4.7">4.7–5.8 µ</quantity>
|
||
m. Axial area narrow, slightly broadened close to central area. Central area transverse, forming rectangular to panduriform fascia, expanding to valve margins. Terminal area small and rarely discernible in LM. Raphe linear-filiform, with small, closely spaced, teardrop–shaped central pores. Terminal pores indistinct. Striae coarse, weakly to moderately radiate at middle, becoming strongly convergent near valve ends. Striae on valve mantle (
|
||
<figureCitation id="16C82A752A7EA437FB49FDA9FA9A0860" box="[1152,1292,564,590]" captionStart="FIGURES 69–95" captionStartId="39.[151,270,1125,1149]" captionTargetBox="[264,1323,194,1102]" captionTargetId="figure-49@39.[264,1323,194,1102]" captionTargetPageId="39" captionText="FIGURES 69–95: LM micrographs. Figs 69–83. Hippodonta costulatiformis var. densistriata (type material). Figs 82, 83. Images of complete frustule in girdle view. Figs 84–95. Hippodonta naviculiformis (type material). Scale bar = 10 µm." figureDoi="http://doi.org/10.5281/zenodo.5071984" httpUri="https://zenodo.org/record/5071984/files/figure.png" pageId="13" pageNumber="14">Figs 82, 83</figureCitation>
|
||
) have same orientation as valve face. Striae evenly spaced throughout,
|
||
<quantity id="490B9B152A7EA437FC80FDC7FC27085A" box="[841,945,602,628]" metricMagnitude="-1" metricUnit="m" metricValue="3.175" metricValueMax="3.302" metricValueMin="3.048" pageId="13" pageNumber="14" unit="in" value="12.5" valueMax="13.0" valueMin="12.0">12–13 in</quantity>
|
||
<quantity id="490B9B152A7EA437FC71FDC7FB91085A" box="[952,1031,602,628]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="13" pageNumber="14" unit="mm" value="10.0">10 µm</quantity>
|
||
. Lineolae not discernible in LM.
|
||
</paragraph>
|
||
<paragraph id="8E4C36F02A7EA437FF5EFD1CFE0609FE" blockId="13.[151,1436,370,1440]" pageId="13" pageNumber="14">
|
||
SEM: Externally, valve face flat (
|
||
<figureCitation id="16C82A752A7EA437FDD5FD1CFDE508B5" box="[540,627,641,667]" captionStart="FIGURES 96–101" captionStartId="40.[151,269,1503,1527]" captionTargetBox="[264,1323,194,1479]" captionTargetId="figure-144@40.[264,1323,194,1479]" captionTargetPageId="40" captionText="FIGURES 96–101: SEM micrographs. Figs 96, 97. Hippodonta costulatiformis var. densistriata (type material). Fig. 96. External view of complete frustule showing narrow hyaline area present on valve mantle and the unornamented girdle. Fig. 97. Internal view of entire valve; striae positioned in shallow ridge depressions; interstriae strongly pronounced; helictoglossae in line with raphe slits. Figs 98–101. Hippodonta naviculiformis (type material). Figs 98, 100. External view of entire valve. Terminal pores of raphe deflected towards one valve side. Fig. 99. Internal view of entire valve. Lineolae positioned in shallow elliptical depressions. Central raphe endings simple linear and distantly positioned. Fig. 101. External view of broken frustule showing girdle unornamented. Scale bars in Fig. 96 = 2 µm; Fig. 97 = 5 µm; Figs 98–101 = 2 µm." figureDoi="http://doi.org/10.5281/zenodo.5071986" httpUri="https://zenodo.org/record/5071986/files/figure.png" pageId="13" pageNumber="14">Fig. 96</figureCitation>
|
||
). Terminal area slightly expanding onto valve face. Terminal pores of raphe simple linear, advancing into terminal area. Striae uniseriate throughout valve face and mantle. Lineolae quite prominent, of equal length on valve face and mantle, c.
|
||
<quantity id="490B9B152A7EA437FCA5FD53FC3F08C6" box="[876,937,718,744]" metricMagnitude="0" metricUnit="m" metricValue="1.016" pageId="13" pageNumber="14" unit="in" value="40.0">40 in</quantity>
|
||
<quantity id="490B9B152A7EA437FC78FD53FB9708C6" box="[945,1025,718,744]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="13" pageNumber="14" unit="mm" value="10.0">10 µm</quantity>
|
||
. The row of lineolae positioned on the apical valve mantle is uniseriate (
|
||
<figureCitation id="16C82A752A7EA437FDA8FD68FD2B0921" box="[609,701,757,783]" captionStart="FIGURES 96–101" captionStartId="40.[151,269,1503,1527]" captionTargetBox="[264,1323,194,1479]" captionTargetId="figure-144@40.[264,1323,194,1479]" captionTargetPageId="40" captionText="FIGURES 96–101: SEM micrographs. Figs 96, 97. Hippodonta costulatiformis var. densistriata (type material). Fig. 96. External view of complete frustule showing narrow hyaline area present on valve mantle and the unornamented girdle. Fig. 97. Internal view of entire valve; striae positioned in shallow ridge depressions; interstriae strongly pronounced; helictoglossae in line with raphe slits. Figs 98–101. Hippodonta naviculiformis (type material). Figs 98, 100. External view of entire valve. Terminal pores of raphe deflected towards one valve side. Fig. 99. Internal view of entire valve. Lineolae positioned in shallow elliptical depressions. Central raphe endings simple linear and distantly positioned. Fig. 101. External view of broken frustule showing girdle unornamented. Scale bars in Fig. 96 = 2 µm; Fig. 97 = 5 µm; Figs 98–101 = 2 µm." figureDoi="http://doi.org/10.5281/zenodo.5071986" httpUri="https://zenodo.org/record/5071986/files/figure.png" pageId="13" pageNumber="14">Fig. 96</figureCitation>
|
||
). Hyaline area present throughout valve mantle, moderately pronounced. Girdle band broad, unornamented. Internally, each stria positioned in its own depression, thus valve face not flat (
|
||
<figureCitation id="16C82A752A7EA437FE44FCDFFE7D0972" box="[397,491,834,860]" captionStart="FIGURES 96–101" captionStartId="40.[151,269,1503,1527]" captionTargetBox="[264,1323,194,1479]" captionTargetId="figure-144@40.[264,1323,194,1479]" captionTargetPageId="40" captionText="FIGURES 96–101: SEM micrographs. Figs 96, 97. Hippodonta costulatiformis var. densistriata (type material). Fig. 96. External view of complete frustule showing narrow hyaline area present on valve mantle and the unornamented girdle. Fig. 97. Internal view of entire valve; striae positioned in shallow ridge depressions; interstriae strongly pronounced; helictoglossae in line with raphe slits. Figs 98–101. Hippodonta naviculiformis (type material). Figs 98, 100. External view of entire valve. Terminal pores of raphe deflected towards one valve side. Fig. 99. Internal view of entire valve. Lineolae positioned in shallow elliptical depressions. Central raphe endings simple linear and distantly positioned. Fig. 101. External view of broken frustule showing girdle unornamented. Scale bars in Fig. 96 = 2 µm; Fig. 97 = 5 µm; Figs 98–101 = 2 µm." figureDoi="http://doi.org/10.5281/zenodo.5071986" httpUri="https://zenodo.org/record/5071986/files/figure.png" pageId="13" pageNumber="14">Fig. 97</figureCitation>
|
||
). Lineolae covered by elliptical volae. Central raphe endings simple linear, distantly positioned. Linear raphe slits distally terminated by weak, semi-circular helictoglossae. Helictoglossae positioned just before the terminal area, in line with raphe slits. Internally, terminal area strongly pronounced.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C6E9657B2A7EA437FF0FFC40FD440F8E" pageId="13" pageNumber="14" type="distribution">
|
||
<paragraph id="8E4C36F02A7EA437FF0FFC40FDCC0E30" blockId="13.[151,1436,370,1440]" pageId="13" pageNumber="14">
|
||
<emphasis id="BC87EAE22A7EA437FF0FFC40FEC909D9" bold="true" box="[198,351,989,1015]" pageId="13" pageNumber="14">Distribution</emphasis>
|
||
:—
|
||
<taxonomicName id="49F34D732A7EA437FE4DFC40FC0D09D8" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[388,923,989,1015]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="densistriata">
|
||
<emphasis id="BC87EAE22A7EA437FE4DFC40FD5B09D8" box="[388,717,989,1014]" italics="true" pageId="13" pageNumber="14">Hippodonta costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7EA437FCD8FC40FC0D09D8" box="[785,923,989,1014]" italics="true" pageId="13" pageNumber="14">densistriata</emphasis>
|
||
</taxonomicName>
|
||
has so far only been observed in littoral sediments in Lake Prespa,
|
||
<collectingCountry id="F6E476602A7EA437FE19FB99FDC00E30" box="[464,598,1028,1054]" name="Macedonia" pageId="13" pageNumber="14">Macedonia</collectingCountry>
|
||
.
|
||
</paragraph>
|
||
<paragraph id="8E4C36F02A7EA437FF0FFBB7FD440F8E" blockId="13.[151,1436,370,1440]" pageId="13" pageNumber="14">
|
||
<emphasis id="BC87EAE22A7EA437FF0FFBB7FEFA0E6A" bold="true" box="[198,364,1066,1092]" pageId="13" pageNumber="14">Observations</emphasis>
|
||
:—
|
||
<taxonomicName id="49F34D732A7EA437FE5BFBB7FC5B0E6D" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[402,973,1066,1092]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="densistriata">
|
||
<emphasis id="BC87EAE22A7EA437FE5BFBB7FD730E6D" box="[402,741,1066,1091]" italics="true" pageId="13" pageNumber="14">Hippodonta costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7EA437FC8AFBB7FC5B0E6D" box="[835,973,1066,1091]" italics="true" pageId="13" pageNumber="14">densistriata</emphasis>
|
||
</taxonomicName>
|
||
resembles
|
||
<taxonomicName id="49F34D732A7EA437FBBAFBB7FEDD0E44" authority="var. costulatiformis" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="costulatiformis">
|
||
<emphasis id="BC87EAE22A7EA437FBBAFBB7FB1E0E6D" box="[1139,1160,1066,1091]" italics="true" pageId="13" pageNumber="14">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7EA437FB61FBB7FACE0E6D" box="[1192,1368,1066,1091]" italics="true" pageId="13" pageNumber="14">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7EA437FF5EFBCCFEDD0E44" box="[151,331,1105,1130]" italics="true" pageId="13" pageNumber="14">costulatiformis</emphasis>
|
||
</taxonomicName>
|
||
(Lange-Bert.
|
||
<emphasis id="BC87EAE22A7EA437FE3CFBCCFDA70E44" box="[501,561,1105,1130]" italics="true" pageId="13" pageNumber="14">et al.</emphasis>
|
||
1996: figs 1: 27–29) with respect to valve outline, striae pattern and the presence of a well-defined fascia. Nevertheless, the latter taxon is consistently broader than
|
||
<taxonomicName id="49F34D732A7EA437FB00FBE5FEC50E96" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="densistriata">
|
||
<emphasis id="BC87EAE22A7EA437FB00FBE5FB480EBF" box="[1225,1246,1144,1169]" italics="true" pageId="13" pageNumber="14">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7EA437FB25FBE5FA0A0EBF" box="[1260,1436,1144,1169]" italics="true" pageId="13" pageNumber="14">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7EA437FF00FB02FEC50E96" box="[201,339,1183,1208]" italics="true" pageId="13" pageNumber="14">densistriata</emphasis>
|
||
</taxonomicName>
|
||
for any given valve length. However, the most significant differential character between these two taxa is the stria density, being more densely spaced in
|
||
<taxonomicName id="49F34D732A7EA437FC90FB58FB6C0EF0" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" box="[857,1274,1221,1247]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="densistriata">
|
||
<emphasis id="BC87EAE22A7EA437FC90FB58FCF80EF0" box="[857,878,1221,1246]" italics="true" pageId="13" pageNumber="14">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7EA437FCB7FB58FBA60EF0" box="[894,1072,1221,1246]" italics="true" pageId="13" pageNumber="14">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7EA437FBA4FB58FB6C0EF0" box="[1133,1274,1221,1246]" italics="true" pageId="13" pageNumber="14">densistriata</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<quantity id="490B9B152A7EA437FAC2FB58FAE00EF1" box="[1291,1398,1221,1247]" metricMagnitude="-1" metricUnit="m" metricValue="3.175" metricValueMax="3.302" metricValueMin="3.048" pageId="13" pageNumber="14" unit="in" value="12.5" valueMax="13.0" valueMin="12.0">12–13 in</quantity>
|
||
<quantity id="490B9B152A7EA437FAB7FB58FF560F28" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="13" pageNumber="14" unit="mm" value="10.0">10 µm</quantity>
|
||
) compared to
|
||
<taxonomicName id="49F34D732A7EA437FEB9FB71FCAB0F2B" authority="var. costulatiformis" box="[368,829,1260,1286]" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="costulatiformis">
|
||
<emphasis id="BC87EAE22A7EA437FEB9FB71FE130F2B" box="[368,389,1260,1285]" italics="true" pageId="13" pageNumber="14">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7EA437FE5FFB71FDDD0F2B" box="[406,587,1260,1285]" italics="true" pageId="13" pageNumber="14">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7EA437FD41FB71FCAB0F2B" box="[648,829,1260,1285]" italics="true" pageId="13" pageNumber="14">costulatiformis</emphasis>
|
||
</taxonomicName>
|
||
(
|
||
<quantity id="490B9B152A7EA437FC87FB71FC3D0F28" box="[846,939,1260,1286]" metricMagnitude="-1" metricUnit="m" metricValue="2.286" metricValueMax="2.54" metricValueMin="2.032" pageId="13" pageNumber="14" unit="in" value="9.0" valueMax="10.0" valueMin="8.0">8–10 in</quantity>
|
||
<quantity id="490B9B152A7EA437FC7DFB71FB910F28" box="[948,1031,1260,1286]" metricMagnitude="-2" metricUnit="m" metricValue="1.0" pageId="13" pageNumber="14" unit="mm" value="10.0">10 µm</quantity>
|
||
). According the valve outline,
|
||
<taxonomicName id="49F34D732A7EA437FAB6FB71FD980F02" authorityName="A. Pavlov, Levkov, D. M. Williams & Edlund" authorityYear="2013" class="Bacillariophyceae" family="Naviculaceae" genus="Hippodonta" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="13" pageNumber="14" phylum="Bacillariophyta" rank="variety" species="costulatiformis" variety="densistriata">
|
||
<emphasis id="BC87EAE22A7EA437FAB6FB71FA020F2B" box="[1407,1428,1260,1285]" italics="true" pageId="13" pageNumber="14">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7EA437FF5EFA8EFEDE0F02" box="[151,328,1299,1324]" italics="true" pageId="13" pageNumber="14">costulatiformis</emphasis>
|
||
var.
|
||
<emphasis id="BC87EAE22A7EA437FE4AFA8EFD980F02" box="[387,526,1299,1324]" italics="true" pageId="13" pageNumber="14">densistriata</emphasis>
|
||
</taxonomicName>
|
||
also resembles
|
||
<taxonomicName id="49F34D732A7EA437FD05FA8EFAB70F02" authority="(Skvortsov) Kulikovskiy, Metzeltin" authorityName="Kulikovskiy, Metzeltin" baseAuthorityName="Skvortsov" box="[716,1313,1298,1324]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" higherTaxonomySource="CoL" kingdom="Animalia" order="Naviculales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="costuloides">
|
||
<emphasis id="BC87EAE22A7EA437FD05FA8EFD770F02" box="[716,737,1299,1324]" italics="true" pageId="13" pageNumber="14">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7EA437FD38FA8EFCE00F02" box="[753,886,1299,1324]" italics="true" pageId="13" pageNumber="14">costuloides</emphasis>
|
||
(Skvortsov) Kulikovskiy, Metzeltin
|
||
</taxonomicName>
|
||
& Lange- Bert. in
|
||
<bibRefCitation id="EA624B012A7EA437FF31FAA4FDCE0F7D" author="Kulikovskiy, M. & Lange-Bertalot, H. & Metzeltin D. & Witkowski, A." box="[248,600,1337,1363]" pageId="13" pageNumber="14" pagination="1 - 607" refId="ref27477" refString="Kulikovskiy, M., Lange-Bertalot, H., Metzeltin D. & Witkowski, A. (2012) Lake Baikal: Hotspot of endemic diatoms, I. Iconographia Diatomologica 23: 1 - 607." type="journal article" year="2012">
|
||
Kulikovskiy
|
||
<emphasis id="BC87EAE22A7EA437FE58FAA4FE5B0F7C" box="[401,461,1337,1362]" italics="true" pageId="13" pageNumber="14">et al.</emphasis>
|
||
(2012: 146
|
||
</bibRefCitation>
|
||
, figs 66: 1–3). Nonetheless, a fully developed fascia is never observed in
|
||
<taxonomicName id="49F34D732A7EA437FF7FFAFDFEF60F57" box="[182,352,1376,1402]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" higherTaxonomySource="CoL" kingdom="Animalia" order="Naviculales" pageId="13" pageNumber="14" phylum="Ochrophyta" rank="species" species="costuloides">
|
||
<emphasis id="BC87EAE22A7EA437FF7FFAFDFF5D0F57" box="[182,203,1376,1401]" italics="true" pageId="13" pageNumber="14">H</emphasis>
|
||
.
|
||
<emphasis id="BC87EAE22A7EA437FF12FAFDFEF60F57" box="[219,352,1376,1401]" italics="true" pageId="13" pageNumber="14">costuloides</emphasis>
|
||
</taxonomicName>
|
||
and the presence of one shortened stria from both valve sides in the middle of the valve is consistent throughout the size diminution stages.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |