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Issue: Vol. 715 No. 2: 19 Aug. 2025
Type: Article
Published: 2025-08-19
DOI: 10.11646/phytotaxa.715.2.4
Page range: 142-152
Abstract views: 412
PDF downloaded: 12

A new Stauroneis species (Bacillariophyceae) associated with a waterfall in Misiones province (northeastern Argentina)

División Ficología “Dr. Sebastián A. Guarrera”, Museo de La Plata, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, 1900, La Plata. Argentina
División Ficología “Dr. Sebastián A. Guarrera”, Museo de La Plata, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, 1900, La Plata. Argentina
División Ficología “Dr. Sebastián A. Guarrera”, Museo de La Plata, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, 1900, La Plata. Argentina
Museum of Natural History and Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA
Diatom Stauroneis subaerial habitats taxonomy valve morphology Algae

Abstract

During a survey of the diatoms present in aerophilic microhabitats associated with waterfalls in Misiones province (Argentina), aimed to explore the diatom flora occurring in these particular environments, we found a diatom belonging to the genus Stauroneis which does not match to previously recorded taxa and it is therefore described here as a new species, Stauroneis alegrensis. The new species was recorded from a sample of rock scrapings in a site affected by the waterfalls’ spray and documented with light and scanning electron microscopy. The new species was compared to other morphologically similar large species with pseudosepta from other regions of the world. Although sharing with the latter the main features of valve morphology, S. alegrensis can be distinguished by its unique combination of morphometric characters.

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How to Cite

Guerrero, J.M., Vouilloud, A.A., Sala, S.E. & Kociolek, J.P. (2025) A new Stauroneis species (Bacillariophyceae) associated with a waterfall in Misiones province (northeastern Argentina). Phytotaxa 715 (2): 142–152. https://doi.org/10.11646/phytotaxa.715.2.4