Cymatosirella Dąbek, Witkowski & Sabbe gen. nov., a new marine benthic diatom genus (Bacillariophyta) belonging to the family Cymatosiraceae

Przemysław Dąbek , Koen Sabbe , Andrzej Witkowski , Colin Archibald , Krzysztof Kurzydłowski , Izabela Zgłobicka


We present a new marine benthic diatom genus Cymatosirella gen. nov. The genus belongs to the family Cymatosiraceae and has been assigned to the subfamily Extubocelluloideae on the basis of ultrastructural cell wall features. It has isovalvate cells with undulate valves and is characterized by the absence of tubular processes and the occurrence of hollow spines which are observed for the first time in the Cymatosiraceae. The new genus contains four species, two of which are transferred from the genus Cymatosira, viz. Cymatosirella capensis comb. nov. and Cymatosirella minutissima comb. nov., and two which are new to science, viz. Cymatosirella benguelensis sp. nov. and Cymatosirella taylorii sp. nov. Cymatosirella capensis is chosen as the generitype. The new genus includes a group of very small taxa inhabiting the intertidal zone of the Atlantic Ocean with three species in South Africa and one in Europe. C. capensis was originally described by Giffen from Langebaan Lagoon (a shallow marine inlet in the southern part of Saldanha Bay, Western Cape Province), on the basis of light microscopy only, and has to date only been illustrated by line drawings. C. minutissima, so far only known from the Westerschelde estuary (The Netherlands), has previously been documented in more detail using both light and electron microscopy. Here, we present the results of detailed light and electron microscopical investigations of C. capensis, both from its original type material and from recently collected samples from the type locality and neighboring littoral areas in the Western Cape Province, and of the new species C. benguelensis and C. taylorii, also from Western Cape localities. All species are compared with similar small taxa belonging to the Cymatosiraceae, subfamily Extubocelluloideae.
Author Przemysław Dąbek
Przemysław Dąbek,,
, Koen Sabbe - Laboratory of Protistology and Aquatic Ecology, Krijgslaan 281-S8, Ghent University, Belgium
Koen Sabbe,,
, Andrzej Witkowski - Szczecin University (USz)
Andrzej Witkowski,,
, Colin Archibald - 3KZN Aquatic Ecosystems,2/39 Panzano Circuit, Woodvale, 6026, Perth, Australia
Colin Archibald,,
, Krzysztof Kurzydłowski (FMSE / DMD)
Krzysztof Kurzydłowski,,
- Division of Materials Design
, Izabela Zgłobicka (FMSE / DMD)
Izabela Zgłobicka,,
- Division of Materials Design
Journal seriesPhytotaxa, ISSN 1179-3155
Issue year2013
Publication size in sheets0.7
Keywords in PolishCymatosirella, okrzemki, Giffen, wybrzeże morskie, nowy gatunek
Keywords in EnglishCymatosirella, diatoms, Giffen, marine littoral, new genus
ASJC Classification1110 Plant Science; 1105 Ecology, Evolution, Behavior and Systematics
Languageen angielski
Dabek et al Cymatosirella.pdf 9.75 MB
Score (nominal)25
Score sourcejournalList
ScoreMinisterial score = 25.0, 12-01-2020, ArticleFromJournal
Ministerial score (2013-2016) = 25.0, 12-01-2020, ArticleFromJournal
Publication indicators GS Citations = 2.0; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.475; WoS Impact Factor: 2013 = 1.376 (2) - 2013=1.391 (5)
Citation count*2 (2015-02-28)
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