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synonym: Fraxinus aurea, heterophylla, monophylla, pendula

organ parasitic mode stage note taxonomic group parasite
fruit gall rarely Curculionidae Lignyodes bischoffi
fruit borer larva Curculionidae Lignyodes enucleator
fruit borer larva Curculionidae Lignyodes suturatus
leaf vagrant Tenthredinidae Tomostethus nigritus
leaf scale Aleyrodidae Trialeurodes vaporariorum
leaf scale Aleyrodidae Siphoninus phillyreae
stem vagrant doubtful Aphididae Stomaphis graffii
leaf scale Coccidae Pulvinaria hydrangeae
stem scale Diaspididae Lepidosaphes ulmi
stem scale Pseudococcidae Phenacoccus aceris
stem borer Psilidae Chyliza leptogaster
stem borer Cecidomyiidae Resseliella quercivora
fruit gall Psyllidae Psyllopsis machinosus
leaf vagrant summer generation Aphididae Aphis fabae
fruit borer Yponomeutidae Prays ruficeps
fruit gall Cecidomyiidae Contarinia marchali
fruit gall Cecidomyiidae Dasineura helenae
flower gall Eriophyidae Aceria fraxinivora
leaf bud gall summer generation Psyllidae Psyllopsis repens
leaf down Erysiphales Phyllactinia fraxini
leaf leaf spot Capnodiales Cladosporium fraxinicola
leaf gall spring generation Aphididae Prociphilus bumeliae
leaf gall spring generation Aphididae Prociphilus fraxini
leaf gall Cecidomyiidae Dasineura acrophila
leaf gall Cecidomyiidae Dasineura fraxinea
leaf gall Cecidomyiidae Dasineura fraxini
leaf gall Eriophyidae Aceria fraxinicola
leaf gall Eriophyidae Aculus epiphyllus
leaf gall Eriophyidae Aculus fraxini
leaf gall Psyllidae Psyllopsis discrepans
leaf gall Psyllidae Psyllopsis distinguenda
leaf gall Psyllidae Psyllopsis fraxini
leaf vagrant Psyllidae Psyllopsis fraxinicola
leaf gall spring generation Psyllidae Psyllopsis repens
leaf miner Agromyzidae Aulagromyza heringii
leaf miner Gracillariidae Caloptilia cuculipennella
leaf miner Gracillariidae Gracillaria syringella
leaf miner Yponomeutidae Prays fraxinella
leaf pustule Chytridiales Synchytrium aureum
leaf vagrant Eriophyidae Tegonotus collaris
stem gall Diaspididae Chionaspis salicis
stem gall Hypocreales Neonectria galligena
stem gall Pseudomonadales Pseudomonas savastanoi pv fraxini
stem oviposition scar Lestidae Lestes viridis
unknown unknown Gracillariidae Gracillaria loriolella
stem scale Eriococcidae Pseudochermes fraxini
stem scale Coccidae Parthenolecanium corni

Organ

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.

PARASITIC MODE

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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IMPORTANT

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.

 

mod 4.vii.2019