The appearance of two phytopathogenic fungi in the Donbass is predicted: Hymenoscyphus fraxineus (T. Kowalski) Baral, Queloz & Hosoya (Ascomycota: Pezizomycotina: Leotiomycetes) and Cryptostroma corticale (Ellis & Everh.) P.H. Greg. & S. Waller (Ascomycota: Pezizomycotina: Sordariomycetes). These species have already been registered in adjacent territories and in case of invasion into the region, they can cause serious damage to forest, shelterbelt and urban plantings involving ash and maple. Descriptions of disease symptoms and brief ecological and biological characteristics of pathogens are provided.

I.V. Bondarenko-Borisova