Plant Parasites of Europe

leafminers, galls and fungi

Hypericum perforatum

perforate st john’s-wort

synonym: Hypericum noeanum

organparasitic modestagenotetaxonomic groupparasite
leafvagrantLycaenidaeCelastrina argiolus
leafvagrantGeometridaeThalera fimbrialis
leafvagrantChrysomelidaeChrysolina quadrigemina
stemborerGelechiidaeOxypteryx atrella
rootborerBuprestidaeAgrilus hyperici
leafvagrantCicadellidaeZygina hyperici
flowerhiddenThripidaeFrankliniella occidentalis
flowerhiddenThripidaeThrips flavus
leafvagrantChrysomelidaeChrysolina cuprina
leafvagrantChrysomelidaeChrysolina varians
leafvagrantChrysomelidaeChrysolina didymata
leafvagrantChrysomelidaeChrysolina hyperici
leafvagrantChrysomelidaeChrysolina brunsvicensis
leafvagrantChrysomelidaeChrysolina geminata
leafvagrantChrysomelidaeChrysolina geminata
leafvagrantTenthredinidaeTenthredo balteata
leafvagrantTenthredinidaeTenthredo amoena
leafvagrantTenthredinidaeTenthredo zona
leafvagrantTenthredinidaeTenthredo zonula
leafhiddenTortricidaeArchips crataegana
leafhiddenDepressariidaeAgonopterix hypericella
leafhiddenDepressariidaeAgonopterix liturosa
flowerhiddenThripidaeFrankliniella intonsa
fruitboreryounger larvaAdelidaeAdela violella
stemborerlarvaApionidaePseudostenapion simum
fruitborerlarvaApionidaePseudoperapion brevirostre
rootborerSesiidaeChamaesphecia nigrifrons
leafvagrantsummer generationAphididaeAphis fabae
flowergallCecidomyiidaeContarinia hyperici
flowergallTortricidaeLathronympha strigana
leaf budgallCecidomyiidaeDasineura hyperici
leaf budgallCecidomyiidaeDasineura serotina
leaf budgallCecidomyiidaeZeuxidiplosis giardi
leafdownErysiphalesErysiphe hyperici
leafgallCecidomyiidaeMacrolabis marteli
leafminerGracillariidaeEuspilapteryx auroguttella
leafminerLyonetiidaeLeucoptera lustratella
leafminerNepticulidaeFomoria septembrella
leafpustuleChytridialesSynchytrium aureum
leafpustuleaecia teliaPuccinialesMelampsora hypericorum
leafvagrantEriophyidaeAculus hygrophilus
leafvagrantEriophyidaeAculus hyperici
stemgallAsterolecaniidaePlanchonia arabidis
root collarvagrantAphididaeAphis chloris
rootgallCecidomyiidaeGeocrypta braueri
leafvagrantsummer generationAphididaeAphis frangulae frangulae


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 29.iv.2021