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Issue: Vol. 675 No. 2: 3 Dec. 2024
Type: Article
Published: 2024-12-03
DOI: 10.11646/phytotaxa.675.2.8
Page range: 177-184
Abstract views: 93
PDF downloaded: 10

Nanofrustulum fogedii sp. nov., a new araphid diatom (Staurosiraceae, Bacillariophyta) from Spitsbergen (Svalbard archipelago)

Meise Botanic Garden, Research Department, Nieuwelaan 38, 1860 Meise, Belgium. University of Antwerp, Department of Biology – ECOSPHERE, Universiteitsplein 1, 2610 Wilrijk, Belgium.
Université Clermont Auvergne, CNRS, GEOLAB, Clermont-Ferrand, France
Meise Botanic Garden, Research Department, Nieuwelaan 38, 1860 Meise, Belgium
Luxembourg Institute of Science and Technology (LIST), Observatory for Climate, Environment and Biodiversity (OCEB), L-4422 Belvaux, Luxembourg
Foged collectiion morphology Nanofrustulum new species Spitsbergen Algae

Abstract

Nanofrustulum fogedii sp. nov. is described based on a historic sample from Spitsbergen collected by Niels Foged. The new species, originally identified by Foged in 1964 as Nanofrustulum (Melosira) cataractarum, can be separated from the latter by its larger valve diameter, longer striae composed of 1–6 transapically elongated areolae and a higher valve mantle. The species was observed in several samples collected from thermal springs in the Arctic Svalbard Archipelago. Based on its major morphological features, such as the quasifract girdle bands, the small valve dimensions and the serrated linking spines, the transfer of another small-celled araphid species, formerly described as Pseudostaurosira bardii Beauger et al. to the genus Nanofrustulum is justified.

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