<documentid="FFA61B7E22C4E786A142C8800B22E189"ID-CLB-Dataset="299061"ID-DOI="10.5281/zenodo.12118784"ID-GBIF-Dataset="2b921c3c-8618-439e-96da-1de9c66a90f9"ID-ISSN="0026-279X"ID-Zenodo-Dep="12118784"IM.bibliography_approvedBy="julia"IM.illustrations_approvedBy="julia"IM.materialsCitations_approvedBy="julia"IM.metadata_approvedBy="julia"IM.tables_approvedBy="julia"IM.taxonomicNames_approvedBy="julia"IM.treatments_approvedBy="julia"checkinTime="1718742264011"checkinUser="felipe"docAuthor="Lobban, Christopher S. & Witkowski, Andrzej"docDate="2023"docId="03C287AAFFEC0B17FF357C38FAB0FC54"docLanguage="en"docName="Micronesica.2023.02.1-75.pdf"docOrigin="Micronesica 2023 (2)"docStyle="DocumentStyle:73477DD41873F4E732E2765E250AF97D.1:Micronesica.2013-.journal_article.type1"docStyleId="73477DD41873F4E732E2765E250AF97D"docStyleName="Micronesica.2013-.journal_article.type1"docStyleVersion="1"docTitle="Vikingea gibbocalyx Witkowski, Lange-Bertalot & Metzltin"docType="treatment"docVersion="5"lastPageNumber="17"masterDocId="FFFBFFD2FFFC0B07FFD37D20FF9BFFCC"masterDocTitle="Marine benthic diatoms of Guam: new records, Dictyoneis apapae sp. nov., and updates to the checklist"masterLastPageNumber="75"masterPageNumber="1"pageNumber="17"updateTime="1719584991735"updateUser="ExternalLinkService"zenodo-license-document="CC-BY-NC-ND-4.0">
<mods:titleid="A3250804805532B6B238275C28E30E62">Marine benthic diatoms of Guam: new records, Dictyoneis apapae sp. nov., and updates to the checklist</mods:title>
<mods:namePartid="967B9588D401F493B85D52EE80ED8CE5">Lobban, Christopher S.</mods:namePart>
<mods:affiliationid="329A998E276D836DC0326BEBC38FCA16">Division of Natural Sciences, University of Guam, Mangilao, GU 96923, USA clobban @ triton. uog. edu</mods:affiliation>
<mods:affiliationid="3B1FB0119AE13D0B3A4F1D291BA39DAC">University of Szczecin, Institute of Marine and Environmental Sciences Mickiewicza 16 a, PL 70 - 383 Szczecin, Poland</mods:affiliation>
<taxonomicNameid="4C6B4D3FFFEC0B17FF357C38FC66FEFE"authority="(Brun) Witkowski, Lange-Bertalot & Metzltin"authorityName="Witkowski, Lange-Bertalot & Metzltin"baseAuthorityName="Brun"box="[230,1021,280,306]"class="Bacillariophyceae"family="Cocconeidaceae"genus="Vikingea"higherTaxonomySource="GBIF,CoL"kingdom="Chromista"order="Achnanthales"pageId="16"pageNumber="17"phylum="Ochrophyta"rank="species"species="gibbocalyx">
Ref. illus.: Witkowki et al. 2000, p. 125, pl. 55, figs 8–16, pl. 56, figs 1–3, 5, pl. 57, figs 1–4;
<bibRefCitationid="EFFA4B4DFFEC0B17FA927C62FEFFFEB2"author="Hein, M. K. & B. M. Winsborough & M. J. Sullivan"pageId="16"pageNumber="17"refId="ref14894"refString="Hein, M. K., B. M. Winsborough & M. J. Sullivan. 2008. Bacillariophyta (Diatoms) of the Bahamas. Iconographia Diatomologica 19. Gantner Verlag, Ruggell, Germany."type="journal volume"year="2008">Hein et al. 2008</bibRefCitation>
, p. 40, pl. 16, fig. 25;
<bibRefCitationid="EFFA4B4DFFEC0B17FDB17C44FC11FEB2"author="Van de Vijver, B. & C. Riaux-Gobin & P. Compere"box="[610,906,356,382]"pageId="16"pageNumber="17"pagination="263 - 279"refId="ref20239"refString="Van de Vijver, B., C. Riaux-Gobin & P. Compere. 2009. Morphological observations on Vikingea gibbocalyx (Brun) Witkowski, Lange-Berthalot & Metzeltin (Bacillariophyta). Nova Hedwigia 89: 263 - 279."type="journal article"year="2009">Van de Vijver et al. 2009</bibRefCitation>
, figs 1–34,
<bibRefCitationid="EFFA4B4DFFEC0B17FBC37C44FAB5FEB2"author="Riaux-Gobin, C. & O. O. Romero & P. Compere & A. Y. Al-Handel"box="[1040,1326,356,382]"pageId="16"pageNumber="17"pagination="1 - 234"refId="ref18619"refString="Riaux-Gobin, C., O. O. Romero, P. Compere & A. Y. Al-Handel. 2011. Small-sized Achnanthales (Bacillariophyta) from coral sands off Mascarenes (Western Indian Ocean). Bibliotheca Diatomologica 57: 1 - 234."type="journal article"year="2011">Riaux-Gobin et al. 2011</bibRefCitation>
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are diagnostic of the genus in LM, the large circular central area diagnostic of the species in contrast to
<taxonomicNameid="4C6B4D3FFFEC0B17FCD47F04FE6FFDAC"authority="Riaux-Gobin, O. E. Romero, Compere & A. Y. Al-Handel (2011)"authorityName="Riaux-Gobin, O. E. Romero, Compere & A. Y. Al-Handel"authorityYear="2011"class="Bacillariophyceae"family="Cocconeidaceae"genus="Vikingea"higherTaxonomySource="GBIF,CoL"kingdom="Chromista"order="Achnanthales"pageId="16"pageNumber="17"phylum="Ochrophyta"rank="species"species="florifera">
Comments: These specimens are in the lower end of the size range compared to most literature (see
<bibRefCitationid="EFFA4B4DFFEC0B17FF357FB1FD8AFD67"author="Van de Vijver, B. & C. Riaux-Gobin & P. Compere"box="[230,529,657,683]"pageId="16"pageNumber="17"pagination="263 - 279"refId="ref20239"refString="Van de Vijver, B., C. Riaux-Gobin & P. Compere. 2009. Morphological observations on Vikingea gibbocalyx (Brun) Witkowski, Lange-Berthalot & Metzeltin (Bacillariophyta). Nova Hedwigia 89: 263 - 279."type="journal article"year="2009">van de Vijver et al. 2009</bibRefCitation>
, table 1). There are two troubling differences between our specimens and those shown in the recent literature. First, comparison of the internal SV in our
<bibRefCitationid="EFFA4B4DFFEC0B17FEF97FF5FDF8FD23"author="Van de Vijver, B. & C. Riaux-Gobin & P. Compere"box="[298,611,725,751]"pageId="16"pageNumber="17"pagination="263 - 279"refId="ref20239"refString="Van de Vijver, B., C. Riaux-Gobin & P. Compere. 2009. Morphological observations on Vikingea gibbocalyx (Brun) Witkowski, Lange-Berthalot & Metzeltin (Bacillariophyta). Nova Hedwigia 89: 263 - 279."type="journal article"year="2009">van de Vijver et al. (2009)</bibRefCitation>
and similar images in
<bibRefCitationid="EFFA4B4DFFEC0B17FCA27FF5FB12FD23"author="Witkowski, A. & H. Lange-Bertalot & D. Metzeltin"box="[881,1161,725,751]"pageId="16"pageNumber="17"refId="ref20496"refString="Witkowski, A., H. Lange-Bertalot & D. Metzeltin. 2000. Diatom Flora of Marine Coasts, I. A. R. G. Gantner Verlag, Ruggell, Germany."type="book"year="2000">Witkowski et al. (2000)</bibRefCitation>
and
<bibRefCitationid="EFFA4B4DFFEC0B17FB177FF5FEC1FCDD"author="Riaux-Gobin, C. & O. O. Romero & P. Compere & A. Y. Al-Handel"pageId="16"pageNumber="17"pagination="1 - 234"refId="ref18619"refString="Riaux-Gobin, C., O. O. Romero, P. Compere & A. Y. Al-Handel. 2011. Small-sized Achnanthales (Bacillariophyta) from coral sands off Mascarenes (Western Indian Ocean). Bibliotheca Diatomologica 57: 1 - 234."type="journal article"year="2011">Riaux-Gobin et al. (2011)</bibRefCitation>
shows absence in our specimen of the elliptical opening and slit in the marginal ridges; this may be significant even though it was also absent in some specimens by
<bibRefCitationid="EFFA4B4DFFEC0B17FB5C7E38FEB5FC98"author="Van de Vijver, B. & C. Riaux-Gobin & P. Compere"pageId="16"pageNumber="17"pagination="263 - 279"refId="ref20239"refString="Van de Vijver, B., C. Riaux-Gobin & P. Compere. 2009. Morphological observations on Vikingea gibbocalyx (Brun) Witkowski, Lange-Berthalot & Metzeltin (Bacillariophyta). Nova Hedwigia 89: 263 - 279."type="journal article"year="2009">van de Vijver et al. (2009</bibRefCitation>
, fig.20). Secondly,
<bibRefCitationid="EFFA4B4DFFEC0B17FDDD7E1AFCEDFC98"author="Van de Vijver, B. & C. Riaux-Gobin & P. Compere"box="[526,886,826,852]"pageId="16"pageNumber="17"pagination="263 - 279"refId="ref20239"refString="Van de Vijver, B., C. Riaux-Gobin & P. Compere. 2009. Morphological observations on Vikingea gibbocalyx (Brun) Witkowski, Lange-Berthalot & Metzeltin (Bacillariophyta). Nova Hedwigia 89: 263 - 279."type="journal article"year="2009">Van de Vijver et al. (2009: 271</bibRefCitation>
, fig. 27, arrow) show small costae extending from the
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margin into the first row of areolae, a feature clearly absent from the external
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