Plant Parasites of Europe

leafminers, galls and fungi

genus Ailanthus

organ parasitic mode stage note taxonomic group parasite
dead wood borer Cerambycidae Morimus asper
dead wood borer Cerambycidae Aegosoma scabricorne
dead wood borer Cerambycidae Xylotrechus stebbingi
stem scale Diaspididae Pseudaulacaspis pentagona
systemic scale Diaspididae Parlatoria oleae
systemic down Sclerotiniaceae Botrytis cinerea
root film Plectosphaerellaceae Verticillium albo-atrum
root film Plectosphaerellaceae Verticillium dahliae
stem kanker Nectriaceae Nectria cinnabarina
leaf leaf spot Leptospaeriaceae Leptosphaeria glandulosae
leaf leaf spot Ascomycota incertae sedis Septogloeum ailanthi
leaf leaf spot Didymellaceae Ascochyta ailanthi
leaf leaf spot Phyllostictaceae Phyllosticta ailanthi
leaf leaf spot Pleosporales Mycocentrospora acerina
leaf vagrant Pentatomidae Halyomorpha halys
leaf vagrant Erebidae Hyphantria cunea
leaf hidden Tortricidae Archips xylosteana
leaf vagrant doubtful Cicadellidae Hespericerus brusinae
stem borer Curculionidae Hylesinus fraxini
stem borer Curculionidae Hypoborus ficus
leaf down rarely Erysiphales Erysiphe alphitoides
leaf down Erysiphales Erysiphe delavayi
leaf down Erysiphales Erysiphe platani
leaf gall Eriophyidae Aculus mosoniensis
stem scale Coccidae Parthenolecanium corni
leaf vagrant summer generation Aphididae Aphis fabae
leaf vagrant Aphididae Macrosiphum euphorbiae


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.


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