Document of bibliographic reference 354565

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Taxonomy and valve morphology of Humidophila species (Bacillariophyceae) from aerophilous habitats in northeastern Argentina, with the description of four new species

Abstract

During a survey of the diatoms present in aerophilic microhabitats associated with waterfalls in Misiones Province (Argentina), mainly within Iguazú National Park (N.P.), seventeen taxa belonging to the genus Humidophila have been recorded. Previously, only six species of the genus have been reported for all of Argentina. Of the seventeen taxa considered here, four exhibit a unique combination of features and are proposed as new species. These are H. iguazuensis sp. nov., H. lagartiensis sp. nov., H. misionera sp. nov. and H. sebastianii sp. nov. An additional six previously-described species (H. arcuatoides, H. contenta, H. nienta, H. parallela, H. platensis and H. subtropica) are reported. Of these previously-described taxa, only H. contenta has been reported previously from Argentina, so the occurrences of the others in the region expand their known geographic distributions. One taxon has been tentatively identified (as Humidophila aff. biscutella) and the remaining six taxa observed are presumed to be new but remain unidentified at the species level because they occurred in small numbers and could not be sufficiently documented for formal description. This is currently the largest concentration of Humidophila taxa reported in a relatively small geographic region anywhere in the world. Morphological features among the species of the genus are discussed, and we describe the structure of the features associated with longitudinal tubes in the genus. We also present and describe the ecological and biogeographic distributions of Humidophila species.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000788015500001

Bibliographic citation

Vouilloud, A.; Guerrero, J.M.; Sala, S.E.; Simonato, J.; Kociolek, J.P. (2022). Taxonomy and valve morphology of Humidophila species (Bacillariophyceae) from aerophilous habitats in northeastern Argentina, with the description of four new species. Fottea 22(1): 56-77. https://dx.doi.org/10.5507/fot.2021.016

Topic

Fresh water

Is peer reviewed

true

Access rights

open access

Is accessible for free

true