Decussiphycus sinensis sp. nov. (Bacillariophyceae, Mastogloiales) – a new species described from China, with comments on phylogenetic position of the genus

By

Mironov, Andrei
Glushchenko, Anton
Kezlya, Elena
Maltsev, Yevhen
Iurmanov, Anton
Liu, Xiaoyan
Kulikovskiy, Maxim Sergeevich

Type

Article

Date of Publication

2025

Original Publication

PhytoKeys

Volume

254

Pages

1--19

Subjects

Bacillariophyceae , Decussiphycus , Hainan Province , new species , Phylogeny , pore occlusions

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.254.142654

 

Abstract

During the study of freshwater diatom communities in Hainan Province, China, we uncovered an unknown diatom species of the genus Decussiphycus, which is described as Decussiphycus sinensissp. nov. herein. The description is based on LM and SEM investigations; morphologically, the new species is compared to other taxa belonging to the genus. We complemented the description with the results of a molecular analysis based on SSU rDNA and rbcL sequencing. Molecular data is acquired for Decussiphycus for the first time. Hereby, we discuss the phylogenetic relationships between this genus and its closest allies – Aneumastus and Mastogloia, demonstrating the affinity of Decussiphycus within the order Mastogloiales.