Cymbella loescherae sp. nov. (Bacillariophyceae) from First-Order Streams of Southern Brazil

Cymbella loescherae sp. nov. (Bacillariophyceae) from First-Order Streams of Southern Brazil

This paper describes a new species of Cymbella C. Agardh from low-elevation countryside streams of the Serra do Sudeste, São Lourenço do Sul city, in southern Brazil. Cymbella loescherae M. Garcia & D. B. Dutra sp. nov. has as distinctive features the elliptical shape of stigmata, elliptical int...

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Bibliographic Details
Main Authors: Garcia Marinês, Dutra Débora Barwaldt
Format: Article
Language:English
Published: Sciendo 2016-12-01
Series:Polish Botanical Journal
Subjects:
Cymbella aspera group
diatom
freshwater
lotic habitat
new species
Rio Grande do Sul State
South America
taxonomy
Online Access:http://www.degruyter.com/view/j/pbj.2016.61.issue-2/pbj-2016-0026/pbj-2016-0026.xml?format=INT
Description
Summary:This paper describes a new species of Cymbella C. Agardh from low-elevation countryside streams of the Serra do Sudeste, São Lourenço do Sul city, in southern Brazil. Cymbella loescherae M. Garcia & D. B. Dutra sp. nov. has as distinctive features the elliptical shape of stigmata, elliptical internal areolae openings, and the presence of areolae of diverse shapes (X, I, Y, zig-zag) located mainly at the valve center on the dorsal and ventral sides. It resembles C. subhimalaspera Jüttner & Van de Vijver which presents about the same metric data set, but differs from it primarily in the number and form of stigmata, and the form of areola internal openings.
ISSN:2084-4352

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