Aulacoseira konstastinovii sp. nov. and Aulacoseira krylovii sp. nov. – two new centric diatoms from South-east Asia

Abstract

Two new centric diatom species were found in samples collected from Vietnam and Cambodia, Aulacoseira konstantinovii sp. nov. and Aulacoseira krylovii sp. nov. The former differs from other members of the genus mainly by a characteristic strong undulation in the central area of the valve face. The latter is close to A. konstantinovii sp. nov. but differs in its valve face morphology and having fewer rimoportulae. The new species are illustrated by light microscope and scanning electron microscope images.

Keywords:

• Aulacoseira
• Bacillariophyta
• Cambodia
• distribution
• morphology
• new species
• Vietnam

Acknowledgements

The authors are grateful to staff of the Russian-Vietnam Tropical Centre, Coastal Branch (Nha Trang, Vietnam) for their assistance in management and sampling. The authors very much appreciate the help of Dr David Williams and Dr Eileen Cox in correcting the English.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by Russian Science Foundation [grant number 14-14-00555].