Plant Parasites of Europe

leafminers, galls and fungi

Allium sativum


organ parasitic mode stage note taxonomic group parasite
flower predator Aeolothripidae Aeolothrips intermedius
flower predator Aeolothripidae Aeolothrips collaris
leaf hidden Thripidae Thrips angusticeps
leaf hidden Thripidae Thrips tabaci
leaf miner Agromyzidae Phytomyza gymnostoma
root borer Heleomyzidae Suillia univittata
leaf vagrant Aphididae Myzus cymbalariae
leaf vagrant Aphididae Myzus ascalonicus
root borer Cossidae Dyspessa ulula
leaf miner Curculionidae Oprohinus suturalis
leaf vagrant Chrysomelidae Lilioceris merdigera
root borer Brachyceridae Brachycerus muricatus
root borer Brachyceridae Brachycerus undatus
root borer Brachyceridae Brachycerus albidentatus
root borer Brachyceridae Brachycerus plicatus
leaf vagrant Triozidae Bactericera tremblayi
leaf vagrant Triozidae Bactericera kratochvili
leaf vagrant summer generation Aphididae Aphis fabae
leaf down Erysiphales Leveillula allii
leaf down Peronosporales Peronospora destructor
leaf leaf spot Capnodiales Cladosporium allii
leaf miner Glyphipterigidae Acrolepiopsis assectella
leaf pustule aecia Pucciniales Melampsora allii-fragilis
leaf pustule aecia Pucciniales Melampsora allii-populina
leaf pustule aecia Pucciniales Puccinia permixta
leaf pustule aecia uredinia telia Pucciniales Puccinia allii
leaf pustule Urocystidales Urocystis cepulae
leaf vagrant Eriophyidae Aceria tulipae


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.xi.2023