Plant Parasites of Europe

leafminers, galls and fungi

Hypericum perforatum

perforate st john’s-wort

synonym: Hypericum noeanum

organ parasitic mode stage note taxonomic group parasite
leaf leaf spot Sporocadaceae Diploceras hypericinum
leaf leaf spot Mycosphaerellaceae Ramularia hyperici
leaf leaf spot Mycosphaerellaceae Ovularia minutissima
leaf vagrant Alydidae Camptopus lateralis
leaf vagrant Alydidae Camptopus tragacanthae
leaf vagrant Lygaeidae Ortholomus punctipennis
fruit vagrant Lygaeidae Nysius helveticus
leaf vagrant Rhopalidae Rhopalus subrufus
leaf vagrant Pentatomidae Dolycoris baccarum
leaf vagrant adult Curculionidae Barypeithes mollicomus
flower borer doubtful Geometridae Eupithecia laquaearia
leaf vagrant Noctuidae Orthosia gracilis
stem borer Noctuidae Gortyna flavago
leaf vagrant Noctuidae Actinotia polyodon
leaf vagrant Noctuidae Chloantha hyperici
leaf vagrant Geometridae Siona lineata
leaf vagrant Geometridae Peribatodes rhomboidaria
leaf vagrant Geometridae Ematurga atomaria
flower vagrant Geometridae Eupithecia centaureata
flower vagrant Geometridae Eupithecia satyrata
flower vagrant Geometridae Eupithecia subfuscata
leaf vagrant Geometridae Selidosema ambustaria
leaf vagrant Geometridae Aplocera efformata
leaf vagrant Geometridae Aplocera plagiata
leaf vagrant Geometridae Aplocera praeformata
leaf vagrant Lycaenidae Celastrina argiolus
leaf vagrant Geometridae Thalera fimbrialis
leaf vagrant Chrysomelidae Chrysolina quadrigemina
stem borer Gelechiidae Oxypteryx atrella
root borer Buprestidae Agrilus hyperici
leaf vagrant Cicadellidae Zygina hyperici
flower hidden Thripidae Frankliniella occidentalis
flower hidden Thripidae Thrips flavus
leaf vagrant Chrysomelidae Chrysolina cuprina
leaf vagrant Chrysomelidae Chrysolina varians
leaf vagrant Chrysomelidae Chrysolina didymata
leaf vagrant Chrysomelidae Chrysolina hyperici
leaf vagrant Chrysomelidae Chrysolina brunsvicensis
leaf vagrant Chrysomelidae Chrysolina geminata
leaf vagrant Chrysomelidae Chrysolina geminata
leaf vagrant Tenthredinidae Tenthredo balteata
leaf vagrant Tenthredinidae Tenthredo amoena
leaf vagrant Tenthredinidae Tenthredo zona
leaf vagrant Tenthredinidae Tenthredo zonula
leaf hidden Tortricidae Archips crataegana
leaf hidden Depressariidae Agonopterix hypericella
leaf hidden Depressariidae Agonopterix liturosa
flower hidden Thripidae Frankliniella intonsa
fruit borer younger larva Adelidae Adela violella
stem borer larva Apionidae Pseudostenapion simum
fruit borer larva Apionidae Pseudoperapion brevirostre
root borer Sesiidae Chamaesphecia nigrifrons
leaf vagrant summer generation Aphididae Aphis fabae
flower gall Cecidomyiidae Contarinia hyperici
flower gall Tortricidae Lathronympha strigana
leaf bud gall Cecidomyiidae Dasineura hyperici
leaf bud gall Cecidomyiidae Dasineura serotina
leaf bud gall Cecidomyiidae Zeuxidiplosis giardi
leaf down Erysiphales Erysiphe hyperici
leaf gall Cecidomyiidae Macrolabis marteli
leaf miner Gracillariidae Euspilapteryx auroguttella
leaf miner Lyonetiidae Leucoptera lustratella
leaf miner Nepticulidae Fomoria septembrella
leaf pustule Chytridiales Synchytrium aureum
leaf pustule aecia telia Pucciniales Melampsora hypericorum
leaf vagrant Eriophyidae Aculus hygrophilus
leaf vagrant Eriophyidae Aculus hyperici
stem gall Asterolecaniidae Planchonia arabidis
root collar vagrant Aphididae Aphis chloris
root gall Cecidomyiidae Geocrypta braueri
leaf vagrant summer generation Aphididae Aphis 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 20.x.2022