Plant Parasites of Europe

leafminers, galls and fungi

Asperula cynanchica


synonym: Asperula arenicola

organ parasitic mode stage note taxonomic group parasite
root vagrant Aphididae Aphis nonveilleri
leaf vagrant Chrysomelidae Timarcha tenebricosa
leaf leaf spot Mycosphaerellaceae Septoria cruciatae
leaf leaf spot Glomerellaceae Colletotrichum dematium
leaf vagrant Miridae Polymerus asperulae
leaf vagrant Erebidae Watsonarctia deserta
leaf vagrant Geometridae Cataclysme riguata
stem gall Aphididae Myzus langei
stem vagrant Aphididae UhlmannIa singularis
leaf gall Aphididae Staegeriella necopinata
systemic gall Aphididae Aphis galiiscabri
systemic gall Eriophyidae Aceria galiobia
flower gall Cecidomyiidae Schizomyia galiorum
flower gall Eriophyidae Aculus minutus
leaf bud gall Cecidomyiidae Dasineura asperulae
leaf down Erysiphales Golovinomyces riedlianus
leaf down Peronosporales Peronospora calotheca
leaf gall Eriophyidae Aculus rubiae
leaf gall Triozidae Trioza galii
leaf gall Triozidae Trioza velutina
leaf pustule aecia uredinia telia Pucciniales Puccinia asperulae-cynanchicae
stem gall Cecidomyiidae Contarinia asperulae
leaf vagrant summer generation Aphididae Dysaphis pyri


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 26.iv.2023