Plant Parasites of Europe

leafminers, galls and fungi

genus Zinnia

organ parasitic mode stage note taxonomic group parasite
leaf leaf spot Pleosporaceae Alternaria zinniae
leaf leaf spot Mycosphaerellaceae Cercospora zinniae
leaf leaf spot Didymellaceae Ascochyta zinniae
leaf leaf spot Phyllostictaceae Phyllosticta zinniae
root film Ceratobasidiaceae Rhizoctonia solani
root film Peronosporaceae Phytophthora cryptogea
systemic film Pythiaceae Globisporangium debaryanum
systemic pustule Sclerotiniaceae Sclerotinia sclerotiorum
systemic down Sclerotiniaceae Botrytis cinerea
unknown unknown Thripidae Microcephalothrips abdominalis
flower borer Tephritidae Dioxyna bidentis
leaf hidden Tortricidae Cnephasia incertana
leaf miner younger larva Tortricidae Cnephasia asseclana
leaf hidden older larva Tortricidae Cnephasia asseclana
leaf miner Agromyzidae Chromatomyia horticola
leaf down Erysiphales Golovinomyces ambrosiae
leaf down Erysiphales Golovinomyces spadiceus
leaf miner Agromyzidae Calycomyza humeralis
leaf miner Agromyzidae Chromatomyia syngenesiae
leaf miner Agromyzidae Liriomyza bryoniae
leaf miner Agromyzidae Liriomyza strigata
leaf miner Agromyzidae Liriomyza trifolii
leaf vagrant summer generation Aphididae Myzus persicae
root gall Meloidogynidae Meloidogyne hapla


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.


To filter the table above, add a text to the search field (top right of the table).
To sort a column click on an arrow after the column name (both ascending and descending).
Sort multiple columns with Shift + click on the arrows.


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 27.xi.2022