Plant Parasites of Europe

leafminers, galls and fungi

Pyrus communis subsp. pyraster

wild pear

synonym: Pyrus achras, communis subsp. achras, pyraster

organparasitic modestagenotetaxonomic groupparasite
leafvagrantPapilionidaeIphiclides podalirius
leafvagrantGeometridaeAlsophila aescularia
stemborerTortricidaeGrapholita molesta
leafvagrantadultChrysomelidaeLuperus xanthopoda
leafvagrantTingidaeStephanitis pyri
stemborerBuprestidaeAnthaxia nitidula
stemborerCurculionidaeTaphrorychus villifrons
leafvagrantTetranychidaeEotetranychus aceri
leafvagrantTetranychidaeEotetranychus pruni
leafminerYponomeutidaeYponomeuta malinellus
systemicscaleDiaspididaeParlatoria oleae
leafvagrantPsyllidaeCacopsylla notata
stemvagrantPsyllidaeCacopsylla bidens
flowergallCecidomyiidaeContarinia piri
leaf budgallCecidomyiidaeApiomyia bergenstammi
leafdownErysiphalesPhyllactinia mali
leafdownErysiphalesPodosphaera leucotricha
leafgallCecidomyiidaeDasineura pyri
leafgallEriophyidaeEriophyes pseudoinsidiosus
leafgallEriophyidaeEriophyes pyri
leafgallPsyllidaeCacopsylla pyri
leafgallPsyllidaeCacopsylla pyricola
leafpustuleaeciaPuccinialesGymnosporangium sabinae
leafgallspring generationAphididaeDysaphis pyri
leafgallspring generationAphididaeMelanaphis pyraria
leafvagrantspring generationAphididaeRhopalosiphum oxyacanthae
fruitvagrantAphididaeAphanostigma piri
leafgallspring generationAphididaeAnuraphis farfarae
leafvagrantspring generationrarelyAphididaeAnuraphis pyrilaseri


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 8.v.2021