A new species of Nagumoea (Bacillariophyta) from Antarctica, and a further consideration of the systematic position of the genus

Nagumoea livingstonensis sp. nov., a new diatom species is described from a coastal pool on the Maritime Antarctic Livingston Island, South Shetland Islands, based on light and scanning electron microscopy observations. A morphological comparison is made with the two other known Nagumoea taxa. The n...

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Bibliographic Details
Published in:Phytotaxa
Main Authors: VAN DE VIJVER, BART, KOCIOLEK, J. PATRICK
Format: Article in Journal/Newspaper
Language:English
Published: Phytotaxa 2018
Subjects:
Algae
Nagumoea
Maritime Antarctic Region
morphology
taxonomy
new species
Antarctic
South Shetland Islands
Livingston Island
Antarc*
Antarctica
Online Access:http://www.mapress.com/j/pt/article/view/phytotaxa.349.2.5
https://doi.org/10.11646/phytotaxa.349.2.5
Description
Summary:Nagumoea livingstonensis sp. nov., a new diatom species is described from a coastal pool on the Maritime Antarctic Livingston Island, South Shetland Islands, based on light and scanning electron microscopy observations. A morphological comparison is made with the two other known Nagumoea taxa. The new species can be separated by the clear hyaline line between the valve face and mantle areolae, differences in the structure of its a scalariform valvocopula and broader fibulae. The taxonomic position of the genus Nagumoea is discussed. A placement within the Rhopalodiales is doubtful based on the absence of clover-shaped areolae coverings in Nagumoea making the order of Bacillariales a more probable position.

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