Plant Parasites of Europe

leafminers, galls and fungi

Fagus orientalis

synonym: Fagus macrophylla, sylvatica subsp. orientalis

organ parasitic mode stage note taxonomic group parasite
dead wood borer Cerambycidae Aegosoma scabricorne
dead wood borer Cerambycidae Xylosteus kadleci
leaf vagrant Tetranychidae Eotetranychus fagi
stem gall Eriococcidae Cryptococcus fagisuga
stem scale Diaspididae Diaspidiotus zonatus
leaf down Erysiphales Phyllactinia guttata
leaf vagrant Noctuidae Amphipyra pyramidea
leaf vagrant Geometridae Erannis defoliaria
leaf vagrant Geometridae Ennomos quercaria
stem borer Curculionidae Taphrocoetes hirtellus
stem borer Curculionidae Taphrorychus bicolor
stem borer Curculionidae Phloeotribus brevicollis
stem borer Curculionidae Ernoporicus fagi
stem borer Curculionidae Scolytus intricatus
stem borer Curculionidae Trypodendron signatum
stem borer Curculionidae Dryocoetes alni
stem borer Curculionidae Saliciphilus ramicola
stem borer Curculionidae Taphrorychus villifrons
stem borer Curculionidae Xyleborus monographus
stem borer Curculionidae Xyleborus dispar
stem borer Curculionidae Xyleborinus saxesenii
stem borer Curculionidae Trypodendron domesticum
leaf leaf spot Dothideales Pseudodidymella fagi
leaf down Erysiphales Phyllactinia orbicularis
leaf gall Cecidomyiidae Hartigiola annulipes
leaf gall Cecidomyiidae Mikiola cristata
leaf gall Cecidomyiidae Mikiola orientalis
leaf miner Gracillariidae Caloptilia alchimiella
leaf miner Gracillariidae Parornix fagivora
leaf miner Gracillariidae Phyllonorycter maestingella
leaf miner Nepticulidae Stigmella hemargyrella


the part of the plant that most conspicuously is hit by the parasite

all buds: both flower buds and leaf buds
flower: also inflorescence
leaf: also needle, phyllodium, petiole
leaf bud: also unfolding young leaf
fruit: also seed
root: also root stock, runners
root collar: also the lowest part of the stem
stem: also culm, the lower part of the peduncle, in grasses also leaf sheath
systemic: the entire above-ground plant.


borer: larva living internally, almost no outwards signs
down: 0.5-2 mm high fungal down
film: very thin cover of fungal tussue
gall: swelling and/or malformation
grazer: feeding at the outside of the plant
leaf spot: discoloured, often ± necrotic, generally not galled, sign of a fungus infection
miner-borer: larve initially makes a mine, lives as a borer later
pustule: plug of fungal tissue, generally brown-black and < 2 mm
stripe: longitudinal line of fungal tissue in a grass leaf
vagrant: (aphids, mites) living freely on the plant, at higher densitiy causing malformations.


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The host plant spectre of a parasite is rarely known exhaustively; this applies in particular at the species level. It is advisable therefore to check at least also the list of all parasites of this genus.


Last modified 10.vii.2023