wild service-tree

synonym: Pirus torminalis

organ parasitic mode stage note taxonomic group parasite
leaf bud gall larva doubtful Curculionidae Anthonomus chevrolati
leaf vagrant Eriophyidae Calepitrimerus mathiasrexi
leaf gall Tenuipalpidae Cenopalpus spinosus
flower gall Cecidomyiidae Contarinia floriperda
leaf down doubtful Erysiphales Phyllactinia mali
leaf leaf spot Taphrinales Taphrina sorbi
leaf gall spring generation Aphididae Dysaphis aucupariae
leaf gall Cecidomyiidae Contarinia sorbi
leaf gall doubtful Eriophyidae Eriophyes arianus
leaf gall Eriophyidae Eriophyes pyri
leaf gall Eriophyidae Eriophyes torminalis
leaf gall Eriophyidae Phyllocoptes sorbeus
leaf gall Psyllidae Cacopsylla albipes
leaf miner Bucculatricidae Bucculatrix bechsteinella
leaf miner Gracillariidae Parornix scoticella
leaf miner Gracillariidae Phyllonorycter corylifoliella
leaf miner Gracillariidae Phyllonorycter cydoniella
leaf miner Gracillariidae Phyllonorycter hostis
leaf miner rarely Gracillariidae Phyllonorycter leucographella
leaf miner Gracillariidae Phyllonorycter mespilella
leaf miner Gracillariidae Phyllonorycter oxyacanthae
leaf miner Gracillariidae Phyllonorycter sorbi
leaf miner Nepticulidae Stigmella hahniella
leaf miner Nepticulidae Stigmella hybnerella
leaf miner Nepticulidae Stigmella magdalenae
leaf miner Nepticulidae Stigmella mespilicola
leaf miner Nepticulidae Stigmella torminalis
leaf pustule aecia Pucciniales Gymnosporangium clavariiforme
leaf pustule aecia Pucciniales Gymnosporangium confusum
leaf pustule aecia main Pucciniales Gymnosporangium torminali-juniperini
leaf pustule aecia Pucciniales Gymnosporangium tremelloides
leaf pustule uredinia telia Pucciniales Ochropsora ariae
leaf vagrant spring generation Aphididae Rhopalosiphum oxyacanthae
leaf gall Aphididae Aphis pomi

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 17.vii.2019