organ parasitic mode stage note taxonomic group parasite
root borer Sesiidae Bembecia sirphiformis
root borer Sesiidae Bembecia megillaeformis
root borer Sesiidae Bembecia astragali
fruit vagrant Coleophoridae Coleophora albostraminata
fruit vagrant doubtful Coleophoridae Coleophora gallipennella
stem vagrant Aphididae Acyrthosiphon pisum
fruit vagrant Coleophoridae Coleophora semicinerea
fruit gall Cecidomyiidae Contarinia pulchripes
leaf down Erysiphales Erysiphe palczewskii
leaf down Erysiphales Erysiphe pseudacaciae
leaf down Erysiphales Erysiphe trifoliorum
leaf miner Agromyzidae Liriomyza congesta
leaf miner Agromyzidae Phytoliriomyza variegata
leaf miner Coleophoridae Coleophora colutella
leaf pustule aecia Pucciniales Uromyces lereddei
leaf pustule uredinia telia Pucciniales Uromyces caraganae
stem gall Diaspididae Chionaspis salicis
stem vagrant summer generation Aphididae Pemphigus vesicarius
root gall Rhizobiales Rhizobium leguminosarum
stem vagrant Aphididae Aphis craccivora
stem scale Coccidae Parthenolecanium corni
leaf vagrant main Aphididae Acyrthosiphon caraganae
flower gall Aphididae Aphis cytisorum

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.

 

mod 20.vii.2019