Oidium
sp.
KW [Darwin] 50989. Place of collection: Ukraine; Zakarpatska oblast; Tiachiv district; Tiachiv town; the centre (N48°01' E23°37'). Date of collection: 23 August 1984. Associated organism: Carpinus betulus (leaf). Collector: Heluta, V.P.. Identifier: Minter, D.W..