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<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.208.89913" ID-Pensoft-Pub="1314-2003-208-103" ID-Pensoft-UUID="88C0802178725C0F86DB6E2074FDD5AB" ModsDocID="1314-2003-208-103" checkinTime="1663785939964" checkinUser="pensoft" docAuthor="Lobban, Christopher S., Ashworth, Matt P., Camacho, Terance, Lam, Daryl W. &amp; Theriot, Edward C." docDate="2022" docId="47B36CAEE5DC5F939929019FFE2282AB" docLanguage="en" docName="PhytoKeys 208: 103-184" docOrigin="PhytoKeys 208" docPubDate="2022-09-21" docSource="http://dx.doi.org/10.3897/phytokeys.208.89913" docTitle="Ardissoneopsis fulgicans Lobban &amp; Ashworth 2022, sp. nov." docType="treatment" docVersion="2" id="88C0802178725C0F86DB6E2074FDD5AB" lastPageNumber="103" masterDocId="88C0802178725C0F86DB6E2074FDD5AB" masterDocTitle="Revision of Ardissoneaceae (Bacillariophyta, Mediophyceae) from Micronesian populations, with descriptions of two new genera, Ardissoneopsis and Grunowago, and new species in Ardissonea, Synedrosphenia and Climacosphenia" masterLastPageNumber="184" masterPageNumber="103" pageNumber="103" updateTime="1663786243073" updateUser="ExternalLinkService">
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo>
<mods:title>Revision of Ardissoneaceae (Bacillariophyta, Mediophyceae) from Micronesian populations, with descriptions of two new genera, Ardissoneopsis and Grunowago, and new species in Ardissonea, Synedrosphenia and Climacosphenia</mods:title>
</mods:titleInfo>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Lobban, Christopher S.</mods:namePart>
<mods:nameIdentifier type="ORCID">https://orcid.org/0000-0003-1596-0656</mods:nameIdentifier>
<mods:affiliation>Division of Natural Sciences, University of Guam, Mangilao, GU 96923, Guam, USA</mods:affiliation>
<mods:nameIdentifier type="email">clobban@guam.net</mods:nameIdentifier>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Ashworth, Matt P.</mods:namePart>
<mods:affiliation>Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas, USA</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Camacho, Terance</mods:namePart>
<mods:affiliation>Division of Natural Sciences, University of Guam, Mangilao, GU 96923, Guam, USA</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Lam, Daryl W.</mods:namePart>
<mods:affiliation>LSAMP Program, University of Guam, Mangilao, GU 96923, Guam, USA</mods:affiliation>
</mods:name>
<mods:name type="personal">
<mods:role>
<mods:roleTerm>Author</mods:roleTerm>
</mods:role>
<mods:namePart>Theriot, Edward C.</mods:namePart>
<mods:affiliation>Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas, USA</mods:affiliation>
</mods:name>
<mods:typeOfResource>text</mods:typeOfResource>
<mods:relatedItem type="host">
<mods:titleInfo>
<mods:title>PhytoKeys</mods:title>
</mods:titleInfo>
<mods:part>
<mods:date>2022</mods:date>
<mods:detail type="pubDate">
<mods:number>2022-09-21</mods:number>
</mods:detail>
<mods:detail type="volume">
<mods:number>208</mods:number>
</mods:detail>
<mods:extent unit="page">
<mods:start>103</mods:start>
<mods:end>184</mods:end>
</mods:extent>
</mods:part>
</mods:relatedItem>
<mods:location>
<mods:url>http://dx.doi.org/10.3897/phytokeys.208.89913</mods:url>
</mods:location>
<mods:classification>journal article</mods:classification>
<mods:identifier type="DOI">http://dx.doi.org/10.3897/phytokeys.208.89913</mods:identifier>
<mods:identifier type="Pensoft-Pub">1314-2003-208-103</mods:identifier>
<mods:identifier type="Pensoft-UUID">88C0802178725C0F86DB6E2074FDD5AB</mods:identifier>
</mods:mods>
<treatment LSID="urn:lsid:plazi:treatment:47B36CAEE5DC5F939929019FFE2282AB" httpUri="http://treatment.plazi.org/id/47B36CAEE5DC5F939929019FFE2282AB" lastPageNumber="103" pageId="0" pageNumber="103">
<subSubSection pageId="0" pageNumber="103" type="nomenclature">
<paragraph pageId="0" pageNumber="103">
<taxonomicName LSID="47B36CAE-E5DC-5F93-9929-019FFE2282AB" authority="Lobban &amp; Ashworth" authorityName="Lobban &amp; Ashworth" authorityYear="2022" family="Ardissoneaceae" genus="Ardissoneopsis" higherTaxonomySource="treatment-meta" kingdom="Plantae" lsidName="Ardissoneopsis fulgicans" order="Ardissoneales" pageId="0" pageNumber="103" rank="species" species="fulgicans" status="sp. nov.">Ardissoneopsis fulgicans Lobban &amp; Ashworth</taxonomicName>
<taxonomicNameLabel pageId="0" pageNumber="103">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="103" type="description">
<paragraph pageId="0" pageNumber="103">
<figureCitation captionStart="Figures 14" captionStartId="F14" captionText="Figures 14. Ardissoneopsis fulgicans sp. nov. A, B valve in LM showing shape and striation (TK 28) C pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J 5) D, E poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU 7 R) F, G internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU 44 N-A) H pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of Synedrosphenia recta Fig. 13 H); arrowhead indicates edge of fimbriate copula (J 5) I, J poles of frustules showing fimbriae on copula and valvocopula, respectively (J 5). Scale bars: 25 µm (A); 10 µm (D); 5 µm (B, C, E-J)." figureDoi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103">Fig. 14</figureCitation>
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="103" type="reference_group">
<paragraph pageId="0" pageNumber="103">
<taxonomicName authority="Lobban &amp; Ashworth &amp; Camacho &amp; Lam &amp; Theriot, 2022" authorityName="Lobban &amp; Ashworth &amp; Camacho &amp; Lam &amp; Theriot" authorityYear="2022" class="Bacillariophyceae" family="Ardissoneaceae" genus="Ardissonea" higherTaxonomySource="treatment-meta" kingdom="Plantae" lsidName="Ardissonea fulgens" order="Ardissoneales" pageId="0" pageNumber="103" rank="species" species="fulgens" status="sp. nov.">Ardissonea fulgens</taxonomicName>
(Greville) Grunow sensu
<bibRefCitation author="Lobban, CS" journalOrPublisher="Micronesica" pageId="0" pageNumber="103" pagination="237 - 479" publicationUrl="https://micronesica.org/sites/default/files/6_lobban.schefter_micronesica_431.pdf" refId="B41" refString="Lobban, CS, Schefter, M, Jordan, RW, Arai, Y, Sasaki, A, Theriot, EC, Ashworth, M, Ruck, EC, Pennesi, C, 2012. Coral-reef diatoms (Bacillariophyta) from Guam: New records and preliminary checklist, with emphasis on epiphytic species from farmer-fish territories. Micronesica 43: 237 - 479, https://micronesica.org/sites/default/files/6_lobban.schefter_micronesica_431.pdf" title="Coral-reef diatoms (Bacillariophyta) from Guam: New records and preliminary checklist, with emphasis on epiphytic species from farmer-fish territories." url="https://micronesica.org/sites/default/files/6_lobban.schefter_micronesica_431.pdf" volume="43" year="2012">Lobban et al. 2012</bibRefCitation>
, p. 259, pl. 16, figs 3-5. Synonym.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="103" type="diagnosis">
<paragraph pageId="0" pageNumber="103">Diagnosis.</paragraph>
<paragraph pageId="0" pageNumber="103">Differing from congeners in the straight outline, only weakly inflated at the center.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="103" type="description">
<paragraph pageId="0" pageNumber="103">Description.</paragraph>
<paragraph pageId="0" pageNumber="103">
Valves 205-320
<normalizedToken originalValue="µm">µm</normalizedToken>
long, 9-15
<normalizedToken originalValue="µm">µm</normalizedToken>
wide, usually slightly widened in the middle and bluntly rounded at poles (Fig.
<figureCitation captionStart="Figures 14" captionStartId="F14" captionText="Figures 14. Ardissoneopsis fulgicans sp. nov. A, B valve in LM showing shape and striation (TK 28) C pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J 5) D, E poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU 7 R) F, G internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU 44 N-A) H pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of Synedrosphenia recta Fig. 13 H); arrowhead indicates edge of fimbriate copula (J 5) I, J poles of frustules showing fimbriae on copula and valvocopula, respectively (J 5). Scale bars: 25 µm (A); 10 µm (D); 5 µm (B, C, E-J)." figureDoi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103">14A-F</figureCitation>
); 17-19 parallel striae in 10
<normalizedToken originalValue="µm">µm</normalizedToken>
. Cells attached by one pole to sturdy mucilage stalks (not shown). Annulus along valve-margin junction and not visible in LM, underlain by longitudinal costae (Fig.
<figureCitation captionStart="Figures 14" captionStartId="F14" captionText="Figures 14. Ardissoneopsis fulgicans sp. nov. A, B valve in LM showing shape and striation (TK 28) C pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J 5) D, E poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU 7 R) F, G internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU 44 N-A) H pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of Synedrosphenia recta Fig. 13 H); arrowhead indicates edge of fimbriate copula (J 5) I, J poles of frustules showing fimbriae on copula and valvocopula, respectively (J 5). Scale bars: 25 µm (A); 10 µm (D); 5 µm (B, C, E-J)." figureDoi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103">14C, D, F, G</figureCitation>
); sternum absent but striae often out of alignment at the midline (Fig.
<figureCitation captionStart="Figures 14" captionStartId="F14" captionText="Figures 14. Ardissoneopsis fulgicans sp. nov. A, B valve in LM showing shape and striation (TK 28) C pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J 5) D, E poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU 7 R) F, G internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU 44 N-A) H pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of Synedrosphenia recta Fig. 13 H); arrowhead indicates edge of fimbriate copula (J 5) I, J poles of frustules showing fimbriae on copula and valvocopula, respectively (J 5). Scale bars: 25 µm (A); 10 µm (D); 5 µm (B, C, E-J)." figureDoi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103">14B, H</figureCitation>
); often spines on poles (Fig.
<figureCitation captionStart="Figures 14" captionStartId="F14" captionText="Figures 14. Ardissoneopsis fulgicans sp. nov. A, B valve in LM showing shape and striation (TK 28) C pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J 5) D, E poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU 7 R) F, G internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU 44 N-A) H pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of Synedrosphenia recta Fig. 13 H); arrowhead indicates edge of fimbriate copula (J 5) I, J poles of frustules showing fimbriae on copula and valvocopula, respectively (J 5). Scale bars: 25 µm (A); 10 µm (D); 5 µm (B, C, E-J)." figureDoi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103">14D, I</figureCitation>
). Valve rims straight (i.e., lacking a pseudoseptum) and valvocopula simple, therefore no apical groove (Fig.
<figureCitation captionStart="Figures 14" captionStartId="F14" captionText="Figures 14. Ardissoneopsis fulgicans sp. nov. A, B valve in LM showing shape and striation (TK 28) C pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J 5) D, E poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU 7 R) F, G internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU 44 N-A) H pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of Synedrosphenia recta Fig. 13 H); arrowhead indicates edge of fimbriate copula (J 5) I, J poles of frustules showing fimbriae on copula and valvocopula, respectively (J 5). Scale bars: 25 µm (A); 10 µm (D); 5 µm (B, C, E-J)." figureDoi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103">14E, F</figureCitation>
); transverse costae on the mantle thinning toward the margin (Fig.
<figureCitation captionStart="Figures 14" captionStartId="F14" captionText="Figures 14. Ardissoneopsis fulgicans sp. nov. A, B valve in LM showing shape and striation (TK 28) C pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J 5) D, E poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU 7 R) F, G internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU 44 N-A) H pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of Synedrosphenia recta Fig. 13 H); arrowhead indicates edge of fimbriate copula (J 5) I, J poles of frustules showing fimbriae on copula and valvocopula, respectively (J 5). Scale bars: 25 µm (A); 10 µm (D); 5 µm (B, C, E-J)." figureDoi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103">14G</figureCitation>
; contrast Fig.
<figureCitation captionStart="Figure 13" captionStartId="F13" captionText="Figure 13. Synedrosphenia recta sp. nov. Chuuk TK 28 except as noted A, C holotype and details of pole at two focal planes, showing valve face and valvocopula B, D-F specimen in SEM with details of pole at 0 ° tilt (D), arrows showing position of annulus, and 60 ° tilted views of central portion (E) showing copula and opposite pole (F) showing copula and valvocopula with apical notch (arrow) G, H internal view of a pole with valve and valvocopula at 60 ° tilt, showing apical notch (arrow), and at 0 ° tilt, showing apical area without transapical costae; arrows show inferred position of annulus as in D and absence of longitudinal costae I polar view of valve with valvocopula, showing apical notch J broken valve showing continuous transverse costae (arrow) and pores on pars interior of valvocopula (arrowheads) K specimen from Guam (GU 76 B- 4), showing fragments of very narrow pleura (pl, arrows) L specimen from Jaluit (J 5), pole of valve without valvocopula, showing continuous rim and absence of longitudinal costae; two-way arrow marks position of annulus, as in D, H. Scale bars: 50 µm (A, B); 10 µm (C); 5 µm (D-L)." figureDoi="10.3897/phytokeys.208.89913.figure13" httpUri="https://binary.pensoft.net/fig/746729" pageId="0" pageNumber="103">13J</figureCitation>
). Transverse costae on most vimenes but absent from a relatively large area at the poles (compared to
<taxonomicName authorityName="Lobban" authorityYear="2022" class="Fragilariophyceae" family="Ardissoneaceae" genus="Synedrosphenia" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Synedrosphenia recta" order="Ardissoneales" pageId="0" pageNumber="103" phylum="Ochrophyta" rank="species" species="recta">
<emphasis italics="true" pageId="0" pageNumber="103">Synedrosphenia recta</emphasis>
</taxonomicName>
, Fig.
<figureCitation captionStart="Figure 13" captionStartId="F13" captionText="Figure 13. Synedrosphenia recta sp. nov. Chuuk TK 28 except as noted A, C holotype and details of pole at two focal planes, showing valve face and valvocopula B, D-F specimen in SEM with details of pole at 0 ° tilt (D), arrows showing position of annulus, and 60 ° tilted views of central portion (E) showing copula and opposite pole (F) showing copula and valvocopula with apical notch (arrow) G, H internal view of a pole with valve and valvocopula at 60 ° tilt, showing apical notch (arrow), and at 0 ° tilt, showing apical area without transapical costae; arrows show inferred position of annulus as in D and absence of longitudinal costae I polar view of valve with valvocopula, showing apical notch J broken valve showing continuous transverse costae (arrow) and pores on pars interior of valvocopula (arrowheads) K specimen from Guam (GU 76 B- 4), showing fragments of very narrow pleura (pl, arrows) L specimen from Jaluit (J 5), pole of valve without valvocopula, showing continuous rim and absence of longitudinal costae; two-way arrow marks position of annulus, as in D, H. Scale bars: 50 µm (A, B); 10 µm (C); 5 µm (D-L)." figureDoi="10.3897/phytokeys.208.89913.figure13" httpUri="https://binary.pensoft.net/fig/746729" pageId="0" pageNumber="103">13H</figureCitation>
) (Fig.
<figureCitation captionStart="Figures 14" captionStartId="F14" captionText="Figures 14. Ardissoneopsis fulgicans sp. nov. A, B valve in LM showing shape and striation (TK 28) C pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J 5) D, E poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU 7 R) F, G internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU 44 N-A) H pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of Synedrosphenia recta Fig. 13 H); arrowhead indicates edge of fimbriate copula (J 5) I, J poles of frustules showing fimbriae on copula and valvocopula, respectively (J 5). Scale bars: 25 µm (A); 10 µm (D); 5 µm (B, C, E-J)." figureDoi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103">14F, H</figureCitation>
). Three girdle bands were present (Fig.
<figureCitation captionStart="Figures 14" captionStartId="F14" captionText="Figures 14. Ardissoneopsis fulgicans sp. nov. A, B valve in LM showing shape and striation (TK 28) C pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J 5) D, E poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU 7 R) F, G internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU 44 N-A) H pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of Synedrosphenia recta Fig. 13 H); arrowhead indicates edge of fimbriate copula (J 5) I, J poles of frustules showing fimbriae on copula and valvocopula, respectively (J 5). Scale bars: 25 µm (A); 10 µm (D); 5 µm (B, C, E-J)." figureDoi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103">14E, I, J</figureCitation>
). Valvocopula (Fig.
<figureCitation captionStart="Figures 14" captionStartId="F14" captionText="Figures 14. Ardissoneopsis fulgicans sp. nov. A, B valve in LM showing shape and striation (TK 28) C pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J 5) D, E poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU 7 R) F, G internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU 44 N-A) H pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of Synedrosphenia recta Fig. 13 H); arrowhead indicates edge of fimbriate copula (J 5) I, J poles of frustules showing fimbriae on copula and valvocopula, respectively (J 5). Scale bars: 25 µm (A); 10 µm (D); 5 µm (B, C, E-J)." figureDoi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103">14E, H, J</figureCitation>
) with generally two rows of pores on pars exterior; pars interior with a single row along outer edge and a fimbriate inner edge. Copula (Fig.
<figureCitation captionStart="Figures 14" captionStartId="F14" captionText="Figures 14. Ardissoneopsis fulgicans sp. nov. A, B valve in LM showing shape and striation (TK 28) C pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J 5) D, E poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU 7 R) F, G internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU 44 N-A) H pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of Synedrosphenia recta Fig. 13 H); arrowhead indicates edge of fimbriate copula (J 5) I, J poles of frustules showing fimbriae on copula and valvocopula, respectively (J 5). Scale bars: 25 µm (A); 10 µm (D); 5 µm (B, C, E-J)." figureDoi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103">14D, E, I</figureCitation>
) with multiple rows of pores forming a decussate pattern, and a fimbriate advalvar margin. Pleura barely visible as a narrow cap at each end, possibly connected, apparently fimbriate at the poles (Fig.
<figureCitation captionStart="Figures 14" captionStartId="F14" captionText="Figures 14. Ardissoneopsis fulgicans sp. nov. A, B valve in LM showing shape and striation (TK 28) C pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J 5) D, E poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU 7 R) F, G internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU 44 N-A) H pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of Synedrosphenia recta Fig. 13 H); arrowhead indicates edge of fimbriate copula (J 5) I, J poles of frustules showing fimbriae on copula and valvocopula, respectively (J 5). Scale bars: 25 µm (A); 10 µm (D); 5 µm (B, C, E-J)." figureDoi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103">14E, I</figureCitation>
).
</paragraph>
<caption doi="10.3897/phytokeys.208.89913.figures14" httpUri="https://binary.pensoft.net/fig/746730" pageId="0" pageNumber="103" start="Figures 14" startId="F14">
<paragraph pageId="0" pageNumber="103">
<emphasis bold="true" pageId="0" pageNumber="103">Figures 14.</emphasis>
<taxonomicName authorityName="Lobban &amp; Ashworth" authorityYear="2022" family="Ardissoneaceae" genus="Ardissoneopsis" kingdom="Plantae" lsidName="Ardissoneopsis fulgicans" order="Ardissoneales" pageId="0" pageNumber="103" rank="species" species="fulgicans">
<emphasis italics="true" pageId="0" pageNumber="103">Ardissoneopsis fulgicans</emphasis>
</taxonomicName>
sp. nov.
<emphasis bold="true" pageId="0" pageNumber="103">A, B</emphasis>
valve in LM showing shape and striation (TK28)
<emphasis bold="true" pageId="0" pageNumber="103">C</emphasis>
pole of frustule from acid cleaned material in SEM, showing annulus (double-headed arrow) (J5)
<emphasis bold="true" pageId="0" pageNumber="103">D, E</emphasis>
poles of frustules in whole mounts, attached at opposite ends, showing girdle bands and apical spines (GU7R)
<emphasis bold="true" pageId="0" pageNumber="103">F, G</emphasis>
internal views of valve pole and central portion, showing the absence of pseudoseptum at pole and presence of longitudinal costae (arrows) (GU44N-A)
<emphasis bold="true" pageId="0" pageNumber="103">H</emphasis>
pole of valve with valvocopula, showing start of transverse costae (arrow) (contrast with pole of
<taxonomicName authorityName="Lobban" authorityYear="2022" class="Fragilariophyceae" family="Ardissoneaceae" genus="Synedrosphenia" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Synedrosphenia recta" order="Ardissoneales" pageId="0" pageNumber="103" phylum="Ochrophyta" rank="species" species="recta">
<emphasis italics="true" pageId="0" pageNumber="103">Synedrosphenia recta</emphasis>
</taxonomicName>
Fig.
<figureCitation captionStart="Figure 13" captionStartId="F13" captionText="Figure 13. Synedrosphenia recta sp. nov. Chuuk TK 28 except as noted A, C holotype and details of pole at two focal planes, showing valve face and valvocopula B, D-F specimen in SEM with details of pole at 0 ° tilt (D), arrows showing position of annulus, and 60 ° tilted views of central portion (E) showing copula and opposite pole (F) showing copula and valvocopula with apical notch (arrow) G, H internal view of a pole with valve and valvocopula at 60 ° tilt, showing apical notch (arrow), and at 0 ° tilt, showing apical area without transapical costae; arrows show inferred position of annulus as in D and absence of longitudinal costae I polar view of valve with valvocopula, showing apical notch J broken valve showing continuous transverse costae (arrow) and pores on pars interior of valvocopula (arrowheads) K specimen from Guam (GU 76 B- 4), showing fragments of very narrow pleura (pl, arrows) L specimen from Jaluit (J 5), pole of valve without valvocopula, showing continuous rim and absence of longitudinal costae; two-way arrow marks position of annulus, as in D, H. Scale bars: 50 µm (A, B); 10 µm (C); 5 µm (D-L)." figureDoi="10.3897/phytokeys.208.89913.figure13" httpUri="https://binary.pensoft.net/fig/746729" pageId="0" pageNumber="103">13H</figureCitation>
); arrowhead indicates edge of fimbriate copula (J5)
<emphasis bold="true" pageId="0" pageNumber="103">I, J</emphasis>
poles of frustules showing fimbriae on copula and valvocopula, respectively (J5). Scale bars: 25
<normalizedToken originalValue="µm">µm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="103">A</emphasis>
); 10
<normalizedToken originalValue="µm">µm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="103">D</emphasis>
); 5
<normalizedToken originalValue="µm">µm</normalizedToken>
(
<emphasis bold="true" pageId="0" pageNumber="103">B, C, E-J</emphasis>
).
</paragraph>
</caption>
</subSubSection>
<subSubSection pageId="0" pageNumber="103" type="holotype">
<paragraph pageId="0" pageNumber="103">Holotype</paragraph>
<paragraph pageId="0" pageNumber="103">
<emphasis bold="true" pageId="0" pageNumber="103">(designated here).</emphasis>
Slide 449, multiple specimens present. Slide deposited at ANSP, accession # ANSP-GC20111. Representative specimen published in
<bibRefCitation author="Lobban, CS" journalOrPublisher="Micronesica" pageId="0" pageNumber="103" pagination="237 - 479" publicationUrl="https://micronesica.org/sites/default/files/6_lobban.schefter_micronesica_431.pdf" refId="B41" refString="Lobban, CS, Schefter, M, Jordan, RW, Arai, Y, Sasaki, A, Theriot, EC, Ashworth, M, Ruck, EC, Pennesi, C, 2012. Coral-reef diatoms (Bacillariophyta) from Guam: New records and preliminary checklist, with emphasis on epiphytic species from farmer-fish territories. Micronesica 43: 237 - 479, https://micronesica.org/sites/default/files/6_lobban.schefter_micronesica_431.pdf" title="Coral-reef diatoms (Bacillariophyta) from Guam: New records and preliminary checklist, with emphasis on epiphytic species from farmer-fish territories." url="https://micronesica.org/sites/default/files/6_lobban.schefter_micronesica_431.pdf" volume="43" year="2012">Lobban et al. 2012</bibRefCitation>
, Micronesica 43: pl. 16, figs 4, 5.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="103" type="registration">
<paragraph pageId="0" pageNumber="103">Registration.</paragraph>
<paragraph pageId="0" pageNumber="103">Phycobank http://phycobank.org/103241.</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="103" type="type locality">
<paragraph pageId="0" pageNumber="103">Type locality.</paragraph>
<paragraph pageId="0" pageNumber="103">
Guam: Apra Harbor, GabGab reef.
<geoCoordinate degrees="13.443" direction="north" orientation="latitude" precision="55" value="13.443">13.443°N</geoCoordinate>
,
<geoCoordinate degrees="144.643" direction="east" orientation="longitude" precision="55" value="144.643">144.643°E</geoCoordinate>
, sparse filamentous algal turf in farmer fish territory (
<taxonomicName class="Actinopterygii" family="Pomacentridae" genus="Plectroglyphidodon" kingdom="Animalia" lsidName="Plectroglyphidodon lacrymans" order="Perciformes" pageId="0" pageNumber="103" phylum="Chordata" rank="species" species="lacrymans">
<emphasis italics="true" pageId="0" pageNumber="103">Plectroglyphidodon lacrymans</emphasis>
</taxonomicName>
), depth ca. 5 m., collection number GU44Y-13, 10 May 2009. C. Lobban, M. Schefter leg.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="103" type="materials_examined">
<paragraph pageId="0" pageNumber="103">Additional materials examined.</paragraph>
<paragraph pageId="0" pageNumber="103">
<collectingCountry name="Guam">Guam</collectingCountry>
: GU7R!, GU44Z-15!, GU44L!, GU44N-A!, GU44AC-3!, GU44BJ-4! (inter alia);
<collectingCountry name="Micronesia">Federated States of Micronesia</collectingCountry>
:
<collectingRegion country="Micronesia" name="Chuuk">Chuuk</collectingRegion>
: TK28!;
<collectingCountry name="Marshall Islands">Marshall Islands</collectingCountry>
:
<collectingRegion country="Marshall Islands" name="Jaluit">Jaluit</collectingRegion>
J5!.
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="103" type="etymology">
<paragraph pageId="0" pageNumber="103">Etymology.</paragraph>
<paragraph pageId="0" pageNumber="103">
Adjective (Latin),
<taxonomicName class="Actinopterygii" family="Pomacentridae" genus="Plectroglyphidodon" kingdom="Animalia" lsidName="Plectroglyphidodon fulgens" order="Perciformes" pageId="0" pageNumber="103" phylum="Chordata" rank="species" species="fulgens">
<emphasis italics="true" pageId="0" pageNumber="103">Plectroglyphidodon fulgens</emphasis>
</taxonomicName>
(shiny) + -
<emphasis italics="true" pageId="0" pageNumber="103">icans</emphasis>
(&quot;indicates... resemblance sometimes so close as to be almost identical&quot; -
<bibRefCitation author="Stearn, WT" journalOrPublisher="Bioinformatics (Oxford, England)" pageId="0" pageNumber="103" refId="B74" refString="Stearn, WT, 1973. Botanical Latin. David and Charles, Newton Abbott." title="Botanical Latin. David and Charles, Newton Abbott." year="1973">Stearn 1973</bibRefCitation>
: 309).
</paragraph>
</subSubSection>
<subSubSection pageId="0" pageNumber="103" type="taxonomic comments">
<paragraph pageId="0" pageNumber="103">Taxonomic comments.</paragraph>
<paragraph pageId="0" pageNumber="103">
In our region, this species is hard to positively identify in LM from the new species
<taxonomicName authorityName="Lobban" authorityYear="2022" class="Fragilariophyceae" family="Ardissoneaceae" genus="Synedrosphenia" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Synedrosphenia recta" order="Ardissoneales" pageId="0" pageNumber="103" phylum="Ochrophyta" rank="species" species="recta">
<emphasis italics="true" pageId="0" pageNumber="103">Synedrosphenia recta</emphasis>
</taxonomicName>
described above, and some other species so far only glimpsed but differs in (1) having simple apical structure unlike
<taxonomicName authorityName="Azpeitia" authorityYear="1911" baseAuthorityName="H. Peragallo in H. Peragallo and M. Peragallo 1897 -" baseAuthorityYear="1908" class="Fragilariophyceae" family="Ardissoneaceae" genus="Synedrosphenia" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Synedrosphenia" order="Ardissoneales" pageId="0" pageNumber="103" phylum="Ochrophyta" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="103">Synedrosphenia</emphasis>
</taxonomicName>
spp.; (2) the presence of two or more rows of pores on the valvocopula exterior.
<bibRefCitation author="Lobban, CS" journalOrPublisher="Micronesica" pageId="0" pageNumber="103" pagination="237 - 479" publicationUrl="https://micronesica.org/sites/default/files/6_lobban.schefter_micronesica_431.pdf" refId="B41" refString="Lobban, CS, Schefter, M, Jordan, RW, Arai, Y, Sasaki, A, Theriot, EC, Ashworth, M, Ruck, EC, Pennesi, C, 2012. Coral-reef diatoms (Bacillariophyta) from Guam: New records and preliminary checklist, with emphasis on epiphytic species from farmer-fish territories. Micronesica 43: 237 - 479, https://micronesica.org/sites/default/files/6_lobban.schefter_micronesica_431.pdf" title="Coral-reef diatoms (Bacillariophyta) from Guam: New records and preliminary checklist, with emphasis on epiphytic species from farmer-fish territories." url="https://micronesica.org/sites/default/files/6_lobban.schefter_micronesica_431.pdf" volume="43" year="2012">Lobban et al. (2012)</bibRefCitation>
previously identified this species as
<taxonomicName authorityName="Lobban &amp; Ashworth &amp; Camacho &amp; Lam &amp; Theriot" authorityYear="2022" class="Bacillariophyceae" family="Ardissoneaceae" genus="Ardissonea" kingdom="Plantae" lsidName="Ardissonea fulgens" order="Ardissoneales" pageId="0" pageNumber="103" rank="species" species="fulgens">
<emphasis italics="true" pageId="0" pageNumber="103">Ardissonea fulgens</emphasis>
</taxonomicName>
on the basis of literature but
<bibRefCitation author="Kanjer, L" journalOrPublisher="Notulae Algarum" pageId="0" pageNumber="103" pagination="1 - 6" refId="B31" refString="Kanjer, L, Kusber, W-H, Van de Vijver, B, 2021. Observations and typification of Exilaria fulgens Greville (Fragilariaceae, Bacillariophyta) and its transfer to the genus Ardissonea De Notaris, 1870. Notulae Algarum 215: 1 - 6" title="Observations and typification of Exilaria fulgens Greville (Fragilariaceae, Bacillariophyta) and its transfer to the genus Ardissonea De Notaris, 1870." volume="215" year="2021">Kanjer et al.'s (2021)</bibRefCitation>
surprising finding about the type material (see above) forced the reevaluation.
</paragraph>
<caption ID-Table-UUID="6D39394C8FAC96256992516679995DD9" httpUri="http://table.plazi.org/id/6D39394C8FAC96256992516679995DD9" pageId="0" pageNumber="103" start="Table 4" startId="T4">
<paragraph pageId="0" pageNumber="103">
<emphasis bold="true" pageId="0" pageNumber="103">Table 4.</emphasis>
Comparison of species of
<taxonomicName authorityName="Lobban &amp; Ashworth" authorityYear="2022" family="Ardissoneaceae" genus="Ardissoneopsis" kingdom="Plantae" lsidName="Ardissoneopsis" order="Ardissoneales" pageId="0" pageNumber="103" rank="genus">
<emphasis italics="true" pageId="0" pageNumber="103">Ardissoneopsis</emphasis>
</taxonomicName>
†.
</paragraph>
</caption>
<paragraph pageId="0" pageNumber="103">
<table pageId="0" pageNumber="103">
<tr pageId="0" pageNumber="103">
<th colspan="1" isEmpty="true" pageId="0" pageNumber="103" rowspan="1">-</th>
<th colspan="1" pageId="0" pageNumber="103" rowspan="1">
Length
<normalizedToken originalValue="µm">µm</normalizedToken>
</th>
<th colspan="1" pageId="0" pageNumber="103" rowspan="1">
Width
<normalizedToken originalValue="µm">µm</normalizedToken>
</th>
<th colspan="1" pageId="0" pageNumber="103" rowspan="1">Shape</th>
<th colspan="1" pageId="0" pageNumber="103" rowspan="1">
Stria density in 10
<normalizedToken originalValue="µm">µm</normalizedToken>
</th>
<th colspan="1" pageId="0" pageNumber="103" rowspan="1">Valvocopula exterior pores</th>
<th colspan="1" pageId="0" pageNumber="103" rowspan="1">Copula exterior pores</th>
<th colspan="1" pageId="0" pageNumber="103" rowspan="1">Pleura</th>
</tr>
<tr pageId="0" pageNumber="103">
<td colspan="1" pageId="0" pageNumber="103" rowspan="2">
<taxonomicName class="Mediophyceae" family="Ardissoneaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. appressata" order="Toxariales" pageId="0" pageNumber="103" phylum="Bacillariophyta" rank="species" species="appressata">
<emphasis italics="true" pageId="0" pageNumber="103">A. appressata</emphasis>
</taxonomicName>
sp. nov.
</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">400-1000</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">10-15</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="2">Linear, center and poles inflated</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">13-14</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="2">2 rows, decreasing to 1</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="2">6 rows, decreasing to 4</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="2">Very narrow; apical caps?</td>
</tr>
<tr pageId="0" pageNumber="103">
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">[560-900]</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">[9-12]</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">[18-19]</td>
</tr>
<tr pageId="0" pageNumber="103">
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">
<taxonomicName class="Mediophyceae" family="Ardissoneaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. fulgicans" order="Toxariales" pageId="0" pageNumber="103" phylum="Bacillariophyta" rank="species" species="fulgicans">
<emphasis italics="true" pageId="0" pageNumber="103">A. fulgicans</emphasis>
</taxonomicName>
sp. nov.
</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">205-320</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">9-15</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">Linear, center slightly inflated</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">17-19</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">4 rows, decreasing to 2</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">4-5 rows</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">Very narrow; apical caps?</td>
</tr>
<tr pageId="0" pageNumber="103">
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">
<taxonomicName class="Mediophyceae" family="Ardissoneaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. gracilis" order="Toxariales" pageId="0" pageNumber="103" phylum="Bacillariophyta" rank="species" species="gracilis">
<emphasis italics="true" pageId="0" pageNumber="103">A. gracilis</emphasis>
</taxonomicName>
sp. nov.
</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">217-431</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">5-7</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">
Linear, undulate, center
<normalizedToken originalValue="±">+/-</normalizedToken>
inflated
</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">10-12</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">4 rows, decreasing to 1 near basal pole, but increasing at both poles</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">Ca. 8 rows decreasing to 2</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">Narrow.; continuous?</td>
</tr>
<tr pageId="0" pageNumber="103">
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">
<taxonomicName class="Mediophyceae" family="Ardissoneaceae" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="A. undosa" order="Toxariales" pageId="0" pageNumber="103" phylum="Bacillariophyta" rank="species" species="undosa">
<emphasis italics="true" pageId="0" pageNumber="103">A. undosa</emphasis>
</taxonomicName>
</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">To 850</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">10-11</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">Linear, undulate, center and poles inflated</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">19-22</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">Unknown</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">Unknown</td>
<td colspan="1" pageId="0" pageNumber="103" rowspan="1">Unknown</td>
</tr>
</table>
</paragraph>
<paragraph pageId="0" pageNumber="103">
<tableNote pageId="0" pageNumber="103">† data for known species are from literature cited in text, data for Micronesian specimens of given in brackets where different.</tableNote>
</paragraph>
</subSubSection>
</treatment>
</document>
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