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Issue: Vol. 730 No. 1: 18 Nov. 2025
Type: Article
Published: 2025-11-18
DOI: 10.11646/phytotaxa.730.1.7
Page range: 89-95
Abstract views: 82
PDF downloaded: 3

Mallomonas capitata sp. nov.—a new rare tropical species from section Mallomonas (Synurales, Chrysophyceae)

Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia
Coastal Branch of Joint Vietnam-Russia Tropical Science and Technology Research Center, 30 Nguyen Thien Thuat, Nha Trang 650000, Vietnam
Institute for Cellular and Intracellular Symbiosis of the Ural Branch of the Russian Academy of Sciences of the Orenburg Federal Research Center RAS, Pionerskaya Street, 11, 460000, Orenburg, Russia
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninsky Prospect 33, 119071 Moscow, Russia
Synurales Mallomonas section Mallomonas scale ultrastructure new species tropics Algae

Abstract

Mallomonas capitata sp. nov. is described from Vietnam based on silica-scale morphology examined using transmission and scanning electron microscopy. The new species is characterized by a narrowing in the distal part of the scale, a large broadly oval dome with ribs, the presence of an expansion with a spine of the anterior submarginal rib on one side of the dome, and meshes along the V-rib, anterior submarginal ribs and dome on the shield. Based on scale ultrastructure, the new species is assigned to section Mallomonas. To date, M. capitata has been recorded only in four nearby localities, suggesting limited distribution.

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How to Cite

Gusev, E.S., Huan, P.T., Ignatenko, M.E. & Efeykin, B.D. (2025) Mallomonas capitata sp. nov.—a new rare tropical species from section Mallomonas (Synurales, Chrysophyceae). Phytotaxa 730 (1): 89–95. https://doi.org/10.11646/phytotaxa.730.1.7