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International Journal on Algae
SJR: 0.219 SNIP: 0.261 CiteScore™: 0.24

ISSN Druckformat: 1521-9429
ISSN Online: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v19.i2.10
pages 99-110

The Species of the Genus Fallacia A.J. Stickle & D.G. Mann (Bacillariophyta) in Russia: Morphology, Taxonomy, Ecology and Distribution

S. I. Genkal
I.D. Papanin Institute for Biology of Inland Waters of RAS, Settle Borok, Nekouz District, Yaroslavl Region 152742, Russia
M. I. Yarushina
Institute of Plant and Animal Ecology, Ural Branch, RAS, 202, 8 Marta St., Yekaterinburg 620144, Russia


In the phytoplankton of water bodies and watercourses of the Far North of Western Siberia (Gydansky Peninsula, Yamal Peninsula, Tazovsky Peninsula), seven representatives of the genera Fallacia and recently described Pseudofallacia Y.Y. Liu, J.P. Kociolek et Q.X. Wang have been recorded using scanning electron microscopy. They include a new species Pseudofallacia makarovae Genkal & Yarushina sp. nov. In Fallacia pygmae Kütz., F. forcipata Grev., F. subhamulata (Grev.) D.G. Mann, and Pseudofallacia tenera (Hustedt) Liu, Kociolek et Wang the ranges of variability of valve lengths and widths, and the number of striae in 10 μm agree with the literature data. Representatives of Fallacia insociabilis (Krasske) D.G. Mann and Pseudofallacia losevae (Lange-Bertalot, Genkal et Velhov) Liu, Kociolek et Wang had some morphological differences comparing to protologues. The newly described species P. makarovae has much in common with P. losevae and Fallacia muraloides (Hust.) D.G. Mann, however it differs from them in size of central area reaching the valve margins. Our data supplement information on ecology and distributionon of revealed representatives of the genera Fallacia and Pseudofallacia.

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