A new species of nanoplanktonic diatom: Thalassiosira catharinensis (Bacillariophyceae) from Southern of Brazil

Thalassiosira catharinensis is a new nanoplanktonic diatom 4.4–6.6 µm diameter. The diagnostic characteristics are the presence of fultoportulae and rimoportulae with short external tubes of the same diameter, rimoportula located at same level as fultoportulae, the presence of three satellite pores...

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Bibliographic Details
Published in:Phytotaxa
Main Authors: GARCIA, MARINÊS, DUTRA, DÉBORA BÄRWALDT
Format: Article in Journal/Newspaper
Language:English
Published: Phytotaxa 2016
Subjects:
Algae
New Thalassiosira taxon
Santa Marta Grande Cape
Scanning Electron Microscopy
South Atlantic Ocean
Online Access:http://www.mapress.com/j/pt/article/view/phytotaxa.288.1.6
https://doi.org/10.11646/phytotaxa.288.1.6
Description
Summary:Thalassiosira catharinensis is a new nanoplanktonic diatom 4.4–6.6 µm diameter. The diagnostic characteristics are the presence of fultoportulae and rimoportulae with short external tubes of the same diameter, rimoportula located at same level as fultoportulae, the presence of three satellite pores around marginal and central fultoportulae, and rimportula with small, shallow internal aperture. The new species is compared to similar taxa such as Thalassiosira laevis, T. mala, T. minima, T. profunda and T. pseudonana.

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