Plant Parasites of Europe

leafminers, galls and fungi

Parietaria judaica


synonym: Parietaria diffusa, ramiflora

organ parasitic mode stage note taxonomic group parasite
leaf vagrant Nymphalidae Polygonia egea
leaf hidden Thripidae Thrips tabaci
stem gall larva Apionidae Taeniapion rufescens
stem scale Pseudococcidae Planococcus citri
leaf leaf spot Capnodiales Ramularia parietariae
leaf vagrant Erebidae Hypena obsitalis
leaf vagrant Miridae Closterotomus norwegicus
predator Miridae Macrolophus melanotoma
predator Miridae Macrolophus pygmaeus
leaf vagrant Lygaeidae Hyalochilus ovatulus
leaf pustule Pucciniales Uromyces tenuicutis
leaf vagrant Erebidae Hypena obesalis
leaf vagrant Noctuidae Abrostola canariensis
leaf vagrant doubtful Nymphalidae Vanessa vulcania
leaf vagrant Erebidae Dysgonia algira
leaf vagrant Nymphalidae Vanessa atalanta
leaf vagrant Cicadellidae Eupteryx urticae
leaf scale Aleyrodidae Trialeurodes vaporariorum
leaf gall Aphididae Aphis urticata
leaf vagrant summer generation Aphididae Aphis fabae fabae
leaf vagrant summer generation Aphididae Aphis fabae
stem vagrant Aphididae Aphis craccivora
leaf down Erysiphales Oidiopsis parietariae
leaf leaf spot Entylomatales Entyloma parietariae
leaf gall Aphididae Aphis parietariae
leaf miner Cosmopterigidae Cosmopterix pulchrimella


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 31.xii.2023