Planothidium minuanum sp.nov., a new diatom (Bacillariophyta) species from southern Brazilian coastal lakes

Auteurs

Junqueira M.G., Crossetti L.O., Wetzel C.E.

Référence

Phytotaxa, vol. 676, n° 2, pp. 126-138, 2024

Description

A new Planothidium species discovered in epiphytic samples from southern Brazil's coastal lakes is described as new using light and scanning electron microscopy.Named Planothidium minuanum sp.nov., it is distinguished from the most similar species by its elliptical, slightly asymmetrical valves with pronounced short rostrate ends and coarse striae consisting of one to two rows of areolae.This taxon bears resemblance to the cavum-bearing species in the “Planothidium rostratum sensu lato” group and the recently described Planothidium xinguense from the Brazilian Amazon.This study compares the morphology and ecology of this new species with related taxa and provides insights into its occurrence in southern Brazilian coastal lakes.

Lien

doi:10.11646/phytotaxa.676.2.2