Four new species from the diatom genus Kobayasiella Lange-Bertalot from waterbodies of Southeast Asia

Abstract

Six species of the genus Kobayasiella were found from waterbodies of Southeast Asia. Among them, four species were new to science and their formal descriptions are presented, illustrated with light and scanning electron micrographs. These are: K. laosica Glushchenko, Kulikovskiy & Kociolek sp. nov., K. vietnamensis Glushchenko, Kulikovskiy & Kociolek sp. nov., K. lamii Glushchenko, Kulikovskiy & Kociolek sp. nov. and K. vientianensis Glushchenko, Kulikovskiy & Kociolek sp. nov. In addition, two species of uncertain taxonomic status were observed: K. cf. parasubtilissima (H. Kobayasi & T. Nagumo) Lange-Bertalot and K. cf. saxicola (Manguin ex Kociolek & Reviers) Moser, Lange-Bertalot & Metzeltin. We compare these four species with similar taxa. These records represent the first known occurrences of the genus in waterbodies of Southeast Asia.

Keywords:

• Kobayasiella
• new species
• Southeast Asia
• Laos
• Cambodia
• Vietnam

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The authors are grateful to the staff of the Centre of Electron Microscopy of the Papanin’s Institute for Biology of Inland Waters, RAS, for technical assistance. Samples were collected during expeditions organized and permitted by the Joint Russian-Vietnam Tropical Centre, Ecolan 3.2 theme. Publication is based on research carried out with financial support from the Russian Science Foundation (19–14–00320) for LM, SEM, sample investigation and by the framework of the state assignment (theme AAAA–A19–119041190086–6).