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Issue: Vol. 710 No. 1: 11 Jul. 2025
Type: Article
Published: 2025-07-11
DOI: 10.11646/phytotaxa.710.1.5
Page range: 91-104
Abstract views: 255
PDF downloaded: 8

Two new Mallomonas species (Synurales, Chrysophyceae) from section Torquatae: Mallomonas sagittifera and Mallomonas trifonovae

T.I. Vyazemsky Karadag Scientific Station, Natural Reserve, Russian Academy of Sciences, Nauki street, 24, Kurortnoe, Feodosiya, 298188, Russia
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia
Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok, 109, 152742, Yaroslavl Region, Russia
Joint Vietnam-Russia Tropical Science and Technology Research Center, 63 Nguyen Van Huyen, Nghia Do, Cau Giay, Hanoi, Vietnam
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia
Synurales Mallomonas section Torquatae scale ultrastructure new species tropics Algae

Abstract

This research is devoted to the study of the Mallomonas mangofera species complex in a tropical region using electron microscopy and molecular methods. In this work, three Mallomonas strains from Vietnam, morphologically similar to M. mangofera and M. foveata, were studied. Two new clades were identified based on the SSU rDNA + rbcL cpDNA and ITS1-5.8S-ITS2 rDNA datasets. Two new species, Mallomonas sagittifera and M. trifonovae, were described from Vietnam based on molecular characteristics and morphological analysis of the scale and bristle ultrastructure. The distribution of these taxa was analysed using the information of strains origin, analysis of previously made records and a metabarcoding approach. Mallomonas sagittifera was found in 5 localities in 4 provinces, and M. trifonovae was found in 4 localities in 4 provinces in Vietnam.

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How to Cite

Podunay, Y., Martynenko, N., Shkurina, N., Tran, H. & Gusev, E. (2025) Two new Mallomonas species (Synurales, Chrysophyceae) from section Torquatae: Mallomonas sagittifera and Mallomonas trifonovae. Phytotaxa 710 (1): 91–104. https://doi.org/10.11646/phytotaxa.710.1.5