New and poorly known "araphid" diatom species (Bacillariophyta) from regions near Lake Titicaca, South America and a discussion on the continued use of morphological characters in "araphid" diatom taxonomy.

ABSTRACT: Based on two Andean Altiplano samples and on light and scanning electron microscopy analyses, we present six new species of "araphid" diatoms in the genus Pseudostaurosira, P.aedes sp. nov., P.frankenae sp. nov., P.heteropolaris sp. nov., P.oblonga sp. nov., P.occulta sp. nov., and P.pulchra sp. nov. Additional data are provided for four other known taxa, Nanofrustulumcataractarum, N.rarissimum, P.sajamaensis and P.vulpina, the latter species corresponding to a stat. nov. based on a variety of P.laucensis. Each taxon is described morphologically and compared with closely related published taxa, using characters such as axial area, virgae, vimines, areolar shape, vol

SUBMITTER: Morales EA 

PROVIDER: S-EPMC8688410 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature