Several noteworthy species of the genera Neoramularia and Ramularia (Mycosphaerellaceae) were recorded in August 2018 in the territory of Prypyat’-Stokhid National Nature Park (Volyn Region, Liubeshiv District, Ukraine). Neoramularia bidentis, a species so far only known from South Korea and Poland, was collected on withering leaves of Bidens frondosa (a new host species). Ramularia crepidis on Crepis tectorum was recorded only for the second time in Ukraine since the 1950^th and R. gnaphalii was found on a new host plant, Laphangium luteoalbum. The latter species was so far known from Ukraine only on Omalotheca sylvatica (Gnaphalium sylvaticum) and Gnaphalium uliginosum from Kyiv Region collected about 45 years ago. The plant pathogenic fungus R. lysimachiae on leaves of Lysimachia vulgaris was found to be abundant in Volyn Region. All species are described, illustrated with original scanning electron microscope micrographs, supplemented with host range, distribution data and comments.

Keywords: Bidens, Crepis, fungi, Gnaphalium, Lysimachia, morphology, Mycosphaerellaceae, plant pathogens, Volyn Region

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