Plant Parasites of Europe

leafminers, galls and fungi

Epilobium parviflorum

hoary willowherb

organ parasitic mode stage note taxonomic group parasite
leaf leaf spot Mycosphaerellaceae Septoria epilobii
leaf leaf spot Dothideales Phaeoramularia punctiformis
leaf vagrant Sphingidae Proserpinus proserpina
leaf vagrant Sphingidae Deilephila elpenor
leaf vagrant Sphingidae Hyles gallii
leaf vagrant Chrysomelidae Altica lythri
leaf vagrant Chrysomelidae Altica oleracea
leaf scale Aleyrodidae Trialeurodes vaporariorum
fruit gall Momphidae Mompha subbistrigella
leaf down Erysiphales Leveillula taurica
leaf down Erysiphales Podosphaera epilobii
leaf down Peronosporales Plasmopara epilobii
leaf gall Aphididae Aphis pollinaria
leaf gall Eriophyidae Phyllocoptes epilobiorum
leaf miner Momphidae Mompha langiella
leaf pustule aecia uredinia telia Pucciniales Puccinia pulverulenta
leaf pustule uredinia telia Pucciniales Pucciniastrum epilobii
leaf pustule telia Pucciniales Puccinia epilobii
leaf vagrant summer generation Aphididae Aphis fabae
stem gall Momphidae Mompha divisella
leaf vagrant Aphididae Aphis praeterita
leaf vagrant summer generation Aphididae Aphis grossulariae
leaf vagrant summer generation Aphididae Aphis frangulae frangulae
stem vagrant Aphididae Macrosiphum tinctum
flower gall Aphididae Aphis epilobii
leaf vagrant Aphididae Aphis gossypii
leaf gall rarely Aphididae Aphis epilobiaria

Organ

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.

PARASITIC MODE

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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IMPORTANT

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 18.ix.2022