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<document id="3F0052CCA0C6B2D3DB37161723B396AF" ID-DOI="10.11646/phytotaxa.184.4.1" ID-ISSN="1179-3163" ID-Zenodo-Dep="5146714" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1627598084415" checkinUser="felipe" docAuthor="Cvetkoska, Aleksandra, Levkov, Zlatko, Hamilton, Paul B. &amp; Potapova, Marina" docDate="2014" docId="8A5C9F1CA47AFF841DA98DF522A2FA04" docLanguage="en" docName="Phytotaxa.184.4.181-207.pdf" docOrigin="Phytotaxa 184 (4)" docSource="http://dx.doi.org/10.11646/phytotaxa.184.4.1" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.7:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="7" docTitle="Cavinula maculata Potapova, Cvetkoska, Hamilton &amp; Levkov 2014, sp. nov." docType="treatment" docVersion="3" lastPageNumber="203" masterDocId="7665E764A46CFF921D218F632070FFCC" masterDocTitle="The biogeographic distribution of Cavinula (Bacillariophyceae) in North America with the descriptions of two new species" masterLastPageNumber="207" masterPageNumber="181" pageNumber="203" updateTime="1699030299390" updateUser="plazi" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="CA2EC74BAE1CF790CFFCB0EBBA2E6C05">The biogeographic distribution of Cavinula (Bacillariophyceae) in North America with the descriptions of two new species</mods:title>
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<mods:namePart id="70BEB0BF2167CC7A976D49E3A7A886D1">Cvetkoska, Aleksandra</mods:namePart>
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<mods:namePart id="6EA7FB7770F480786D7CD01FA58F1001">Levkov, Zlatko</mods:namePart>
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<mods:namePart id="BBF032C9D56154039246FFC34B96B76A">Hamilton, Paul B.</mods:namePart>
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<mods:namePart id="465FE9FC5290C71BC3346EB5054F5EDD">Potapova, Marina</mods:namePart>
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<mods:title id="B486C38A1AC0275DE4A185F74CE83758">Phytotaxa</mods:title>
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<mods:date id="D520EC346EC91BC9BC08EAA456A0A927">2014</mods:date>
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<treatment id="8A5C9F1CA47AFF841DA98DF522A2FA04" ID-DOI="http://doi.org/10.5281/zenodo.5149509" ID-Zenodo-Dep="5149509" LSID="urn:lsid:plazi:treatment:8A5C9F1CA47AFF841DA98DF522A2FA04" httpUri="http://treatment.plazi.org/id/8A5C9F1CA47AFF841DA98DF522A2FA04" lastPageNumber="203" pageId="22" pageNumber="203">
<subSubSection id="4AEF7D81A47AFF841DA98DF522B2FC03" pageId="22" pageNumber="203" type="nomenclature">
<paragraph id="024A2E0AA47AFF841DA98DF52427FD7C" blockId="22.[136,1111,662,689]" box="[136,1111,662,689]" pageId="22" pageNumber="203">
<heading id="59029966A47AFF841DA98DF52427FD7C" box="[136,1111,662,689]" fontSize="11" level="2" pageId="22" pageNumber="203" reason="3">
<taxonomicName id="C5F55589A47AFF841DA98DF52339FD7C" authority="Potapova, Cvetkoska, Hamilton &amp; Levkov" authorityName="Potapova, Cvetkoska, Hamilton &amp; Levkov" authorityYear="2014" box="[136,841,662,689]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="maculata" status="sp. nov.">
<emphasis id="3081F218A47AFF841DA98DF52114FD7D" bold="true" box="[136,356,662,689]" italics="true" pageId="22" pageNumber="203">Cavinula maculata</emphasis>
Potapova, Cvetkoska, Hamilton &amp; Levkov
</taxonomicName>
<emphasis id="3081F218A47AFF841E718DF423D5FD7C" box="[848,933,663,688]" italics="true" pageId="22" pageNumber="203">
<taxonomicNameLabel id="2BB24F63A47AFF841E718DF423D5FD7C" box="[848,933,663,688]" pageId="22" pageNumber="203" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(
<figureCitation id="9ACE328FA47AFF841E928DF52464FD7C" box="[947,1044,662,688]" captionStart="FIGURES 193198" captionStartId="23.[136,243,1953,1975]" captionTargetBox="[189,1399,190,1929]" captionTargetId="figure-20@23.[189,1399,190,1929]" captionTargetPageId="23" captionText="FIGURES 193198. LM micrographs of Cavinula maculata Potapova, Cvetkoska, Hamilton &amp; Levkov sp. nov. Figs 199204. SEM micrographs of Cavinula maculata Potapova, Cvetkoska, Hamilton &amp; Levkov sp. nov. Figs 199, 201, 203. External valve views. Figs. 200, 202, 204. Internal valve views. LM Scale bar: 10 µm in Figs 193198. SEM Scale bars: 5µm in Figs 199, 200; 2 µm in Figs 201203; 1 µm in Fig. 204. Fig. 198 = holotype." figureDoi="http://doi.org/10.5281/zenodo.5146740" httpUri="https://zenodo.org/record/5146740/files/figure.png" pageId="22" pageNumber="203">Figs 193</figureCitation>
204)
</heading>
</paragraph>
<paragraph id="024A2E0AA47AFF841DA98D8122B2FC03" blockId="22.[136,1452,738,1048]" pageId="22" pageNumber="203">
Valves elliptic-lanceolate with rounded apices. Valve face flat, sharply bent (not gradually curved) at margin onto mantle. Valve length 2541 µm, width 1520 µm with 2025 stria in 10 µm. Striae radiate throughout; a few shortened striae may be present around central area. Striae uniseriate, composed of fine, rounded to elliptic areolae,
<quantity id="C50D83EFA47AFF841EBB8C49239FFC8C" box="[922,1007,810,832]" metricMagnitude="-1" metricUnit="m" metricValue="5.715" metricValueMax="6.35" metricValueMin="5.08" pageId="22" pageNumber="203" unit="in" value="22.5" valueMax="25.0" valueMin="20.0">2025 in</quantity>
10 µm. Internally, interstriae slightly elevated and areolae covered with hymenes. Axial area narrow, linear. Central area large circular or transversely elliptic. Central nodule elevated internally. Raphe linear; externally, proximal and the distal raphe ends pinhole-shaped; distal raphe ends do not extend onto valve mantle (i.e. terminate on the valve face). Internally, raphe positioned on elevated sternum; distal raphe fissures terminate with a helictoglossa. Copulae open, with one row of pores.
</paragraph>
</subSubSection>
<subSubSection id="4AEF7D81A47AFF841DA98CBD24F0FBD4" pageId="22" pageNumber="203" type="materials_examined">
<paragraph id="024A2E0AA47AFF841DA98CBD24F0FBD4" blockId="22.[136,1452,738,1048]" pageId="22" pageNumber="203">
<emphasis id="3081F218A47AFF841DA98CBD20B2FC3F" bold="true" box="[136,194,990,1011]" pageId="22" pageNumber="203">Type:</emphasis>
<materialsCitation id="B29D2457A47AFF841DFA8CBD240DFBD4" collectingDate="1997-05-08" collectionCode="ANSP" collectorName="B. L. Porter" country="United States of America" location="Toms Creek" municipality="Gadsden" pageId="22" pageNumber="203" specimenCode="GC59003, CANA 93669" specimenCount="3" stateProvince="South Carolina" typeStatus="holotype">
<collectingRegion id="C031E0E8A47AFF841DFA8CBD21C0FC3F" box="[219,432,990,1011]" country="United States of America" name="South Carolina" pageId="22" pageNumber="203">SOUTH CAROLINA</collectingRegion>
,
<collectingCountry id="7AE26E9AA47AFF841C9B8CBD219EFC3F" box="[442,494,990,1011]" name="United States of America" pageId="22" pageNumber="203">USA</collectingCountry>
:
<location id="072A78D1A47AFF841CD78CBD221BFC38" LSID="urn:lsid:plazi:treatment:8A5C9F1CA47AFF841DA98DF522A2FA04:072A78D1A47AFF841CD78CBD221BFC38" box="[502,619,990,1012]" country="United States of America" municipality="Gadsden" name="Toms Creek" pageId="22" pageNumber="203" stateProvince="South Carolina">Toms Creek</location>
near
<collectingMunicipality id="E22EB470A47AFF841F838CBD2288FC38" box="[674,760,990,1012]" pageId="22" pageNumber="203">Gadsden</collectingMunicipality>
, collection date:
<date id="764B08CAA47AFF841EBC8CBD246AFC3F" box="[925,1050,990,1011]" pageId="22" pageNumber="203" value="1997-05-08">
<collectingDate id="660FF122A47AFF841EBC8CBD246AFC3F" box="[925,1050,990,1011]" pageId="22" pageNumber="203" value="1997-05-08">May 8, 1997</collectingDate>
</date>
, collected by
<collectorName id="AF004BDCA47AFF8419808CBD257DFC3F" box="[1185,1293,990,1011]" pageId="22" pageNumber="203">B.L. Porter</collectorName>
(
<typeStatus id="DD4E90A8A47AFF84183B8CBD2504FC38" box="[1306,1396,990,1012]" pageId="22" pageNumber="203" type="holotype">holotype</typeStatus>
! slide
<collectionCode id="64E4B6CFA47AFF841D9C8B612089FBDB" box="[189,249,1026,1047]" country="USA" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" lsid="urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="22" pageNumber="203">ANSP</collectionCode>
<specimenCode id="52538671A47AFF841C218B612110FBD4" box="[256,352,1026,1048]" collectionCode="GC" country="0" name="Goucher College" pageId="22" pageNumber="203">GC59003</specimenCode>
,
<typeStatus id="DD4E90A8A47AFF841C488B6121B2FBD4" box="[361,450,1026,1048]" pageId="22" pageNumber="203" type="holotype">holotype</typeStatus>
! designated here,
<typeStatus id="DD4E90A8A47AFF841F4C8B6122B1FBD4" box="[621,705,1026,1048]" pageId="22" pageNumber="203" type="holotype">holotype</typeStatus>
specimen =
<figureCitation id="9ACE328FA47AFF841E1A8B6123FEFBDB" box="[827,910,1026,1048]" captionStart="FIGURES 193198" captionStartId="23.[136,243,1953,1975]" captionTargetBox="[189,1399,190,1929]" captionTargetId="figure-20@23.[189,1399,190,1929]" captionTargetPageId="23" captionText="FIGURES 193198. LM micrographs of Cavinula maculata Potapova, Cvetkoska, Hamilton &amp; Levkov sp. nov. Figs 199204. SEM micrographs of Cavinula maculata Potapova, Cvetkoska, Hamilton &amp; Levkov sp. nov. Figs 199, 201, 203. External valve views. Figs. 200, 202, 204. Internal valve views. LM Scale bar: 10 µm in Figs 193198. SEM Scale bars: 5µm in Figs 199, 200; 2 µm in Figs 201203; 1 µm in Fig. 204. Fig. 198 = holotype." figureDoi="http://doi.org/10.5281/zenodo.5146740" httpUri="https://zenodo.org/record/5146740/files/figure.png" pageId="22" pageNumber="203">Fig. 198</figureCitation>
; isotypes
<specimenCode id="52538671A47AFF841ECC8B612405FBD4" box="[1005,1141,1026,1048]" collectionCode="CANA" pageId="22" pageNumber="203">CANA 93669</specimenCode>
)
</materialsCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="4AEF7D81A47AFF841DA98B2525DBFBAD" box="[136,1451,1094,1121]" pageId="22" pageNumber="203" type="etymology">
<paragraph id="024A2E0AA47AFF841DA98B2525DBFBAD" blockId="22.[136,1451,1094,1481]" box="[136,1451,1094,1121]" pageId="22" pageNumber="203">
<emphasis id="3081F218A47AFF841DA98B252163FBAC" bold="true" box="[136,275,1094,1120]" pageId="22" pageNumber="203">Etymology:</emphasis>
—The specific epithet (
<taxonomicName id="C5F55589A47AFF841F2D8B25221FFBAC" authorityName="Potapova, Cvetkoska, Hamilton &amp; Levkov" authorityYear="2014" box="[524,623,1094,1120]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="maculata">
<emphasis id="3081F218A47AFF841F2D8B25221FFBAC" box="[524,623,1094,1120]" italics="true" pageId="22" pageNumber="203">maculata</emphasis>
</taxonomicName>
) refers to the thickened central nodule that often appears as a dark spot in LM.
</paragraph>
</subSubSection>
<subSubSection id="4AEF7D81A47AFF841D9C8B0921E1FAD9" pageId="22" pageNumber="203" type="diagnosis">
<paragraph id="024A2E0AA47AFF841D9C8B0921E1FAD9" blockId="22.[136,1451,1094,1481]" pageId="22" pageNumber="203">
<emphasis id="3081F218A47AFF841D9C8B092190FB48" bold="true" box="[189,480,1130,1156]" pageId="22" pageNumber="203">Differential diagnosis:</emphasis>
<taxonomicName id="C5F55589A47AFF841CC18B0922C3FB48" authorityName="Potapova, Cvetkoska, Hamilton &amp; Levkov" authorityYear="2014" box="[480,691,1130,1156]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="maculata">
<emphasis id="3081F218A47AFF841CC18B0922C3FB48" box="[480,691,1130,1156]" italics="true" pageId="22" pageNumber="203">Cavinula maculata</emphasis>
</taxonomicName>
most resembles
<taxonomicName id="C5F55589A47AFF841E468B082472FB48" box="[871,1026,1130,1157]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Ochrophyta" rank="species" species="scutiformis">
<emphasis id="3081F218A47AFF841E468B08230AFB49" box="[871,890,1131,1157]" italics="true" pageId="22" pageNumber="203">C</emphasis>
.
<emphasis id="3081F218A47AFF841EA78B092472FB48" box="[902,1026,1130,1156]" italics="true" pageId="22" pageNumber="203">scutiformis</emphasis>
</taxonomicName>
in size, striae orientation, and enlarged and thickened central nodule. The valve outline of
<taxonomicName id="C5F55589A47AFF841FEB8BEC2324FB64" authorityName="Potapova, Cvetkoska, Hamilton &amp; Levkov" authorityYear="2014" box="[714,852,1166,1193]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="maculata">
<emphasis id="3081F218A47AFF841FEB8BEC2324FB64" box="[714,852,1166,1193]" italics="true" pageId="22" pageNumber="203">C. maculata</emphasis>
</taxonomicName>
is, however, elliptic-lanceolate rather than elliptic as in
<taxonomicName id="C5F55589A47AFF841D898BD02137FB00" box="[168,327,1202,1229]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Ochrophyta" rank="species" species="scutiformis">
<emphasis id="3081F218A47AFF841D898BD02137FB00" box="[168,327,1202,1229]" italics="true" pageId="22" pageNumber="203">C. scutiformis</emphasis>
</taxonomicName>
, striae are much denser, and central area is conspicuously larger. The axial area is also narrower and linear. Areolae around central area in
<taxonomicName id="C5F55589A47AFF841F438BB42370FB3C" box="[610,768,1238,1265]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Ochrophyta" rank="species" species="scutiformis">
<emphasis id="3081F218A47AFF841F438BB42370FB3C" box="[610,768,1238,1265]" italics="true" pageId="22" pageNumber="203">C. scutiformis</emphasis>
</taxonomicName>
are usually transversely elongated, while they are small and circular in
<taxonomicName id="C5F55589A47AFF841C208B9821FAFAD8" authorityName="Potapova, Cvetkoska, Hamilton &amp; Levkov" authorityYear="2014" box="[257,394,1274,1301]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="maculata">
<emphasis id="3081F218A47AFF841C208B9821FAFAD8" box="[257,394,1274,1301]" italics="true" pageId="22" pageNumber="203">C. maculata</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection id="4AEF7D81A47AFF841D9C8A7D22A2FA04" pageId="22" pageNumber="203" type="distribution">
<paragraph id="024A2E0AA47AFF841D9C8A7D22A2FA04" blockId="22.[136,1451,1094,1481]" pageId="22" pageNumber="203">
<emphasis id="3081F218A47AFF841D9C8A7D2105FAF4" bold="true" box="[189,373,1310,1336]" pageId="22" pageNumber="203">Distribution:</emphasis>
<taxonomicName id="C5F55589A47AFF841C548A7C2270FAF4" authorityName="Potapova, Cvetkoska, Hamilton &amp; Levkov" authorityYear="2014" box="[373,512,1310,1337]" class="Bacillariophyceae" family="Cavinulaceae" genus="Cavinula" higherTaxonomySource="GBIF" kingdom="Chromista" order="Naviculales" pageId="22" pageNumber="203" phylum="Bacillariophyta" rank="species" species="maculata">
<emphasis id="3081F218A47AFF841C548A7C2270FAF4" box="[373,512,1310,1337]" italics="true" pageId="22" pageNumber="203">C. maculata</emphasis>
</taxonomicName>
is so far known from its
<typeStatus id="DD4E90A8A47AFF841E098A7C2328FAF5" box="[808,856,1311,1337]" pageId="22" pageNumber="203">type</typeStatus>
locality, Toms Creek,
<collectingRegion id="C031E0E8A47AFF84197C8A7D257AFAF4" box="[1117,1290,1310,1336]" country="United States of America" name="South Carolina" pageId="22" pageNumber="203">South Carolina</collectingRegion>
, from Meyers Creek near Hopkins,
<collectingRegion id="C031E0E8A47AFF841C598A212251FA90" box="[376,545,1346,1372]" country="United States of America" name="South Carolina" pageId="22" pageNumber="203">South Carolina</collectingRegion>
(ANSP sample GC024185, slide ANSP GC103271a), and from Perkins Branch,
<collectingRegion id="C031E0E8A47AFF841DA98A052083FA4C" box="[136,243,1382,1408]" country="United States of America" name="Delaware" pageId="22" pageNumber="203">Delaware</collectingRegion>
(ANSP sample DE000158, slide ANSP GC 115038b). Water chemistry data are available for two
<collectingRegion id="C031E0E8A47AFF84184B8A052098FA68" country="United States of America" name="South Carolina" pageId="22" pageNumber="203">South Carolina</collectingRegion>
sites. In 1997, when samples were collected, pH in these creeks ranged from 4.45.6, conductivity from 2868 µS/cm, and nutrient concentrations were low.
</paragraph>
</subSubSection>
</treatment>
</document>