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Published: 2022-01-11

A new small-celled diatom from Brazil - Luticola minutissima sp. nov., with comparison to the type of the Antarctic L. neglecta Zidarova, Levkov & Van de Vijv

Department of Agroecology and Foret Utilization, Institute of Agricultural Sciences, Land Management and Environmental Protection, University of Rzeszów, ul. Ćwiklinskiej 1A, 35-601 Rzeszów, Poland
Department of Agroecology and Foret Utilization, Institute of Agricultural Sciences, Land Management and Environmental Protection, University of Rzeszów, ul. Ćwiklinskiej 1A, 35-601 Rzeszów, Poland
Uniwersytecki Szpital Kliniczny im. J. Mikulicza-Radeckiego we Wrocławiu, ul. Borowska 213, 50-556 Wrocław, Poland
Botany Department, Universidade Federal do Paraná, Centro Politécnico, Paraná, CP 19031, CP 81531-990, Jardim das Américas, Curitiba, PR, Brazil
Bacillariophyta new taxa Luticola bryophytes South America Algae


The samples for this study were collected from terrestrial mosses and lichens growing on palm tree trunks and concrete walls in the city of Rio de Janeiro, south-eastern Brazil. During the investigation on diatom diversity, a new species from the genus Luticola was found. The new species occurred individually at all sampling sites. The aim of this paper is to provide a morphological and ecological description of Luticola minutissima sp. nov. from an aerophytic environment. The species is characterized by a small valve size (5.2–16.8 μm length and 3.7–4.4 wide) and abruptly hooked proximal raphe endings (ca. 90-degree angle). Additionally for comparison, type material of the most similar species, Luticola neglecta Zidarova, Levkov & Van de Vijver, was studied and new information for the ultrastructure of the latter species is provided as well.


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