organ parasitic mode stage note taxonomic group parasite
root borer larva Chrysomelidae Podagrica fuscipes
stem borer larva Chrysomelidae Podagrica fuscicornis
unknown borer larva Apionidae Aspidapion soror
fruit borer larva Apionidae Pseudapion fulvirostre
root collar borer larva Apionidae Aspidapion aeneum
stem borer larva Apionidae Aspidapion radiolus
fruit borer larva Apionidae Aspidapion validum
leaf vagrant doubtful Aphididae Acyrthosiphon malvae poterii
leaf vagrant summer generation Aphididae Aphis fabae
leaf vagrant Aphididae Aphis gossypii
leaf vagrant summer generation Aphididae Aphis frangulae
leaf vagrant Aphididae Aulacorthum solani
fruit gall Apionidae Malvapion malvae
leaf down Erysiphales Golovinomyces orontii
leaf down Erysiphales Leveillula taurica
leaf gall Aphididae Aphis umbrella
leaf miner Agromyzidae Liriomyza xanthocera
leaf miner Buprestidae Trachys troglodytiformis
leaf miner Psychidae Apterona helicoidella
leaf pustule telia Pucciniales Puccinia malvacearum
leaf vagrant summer generation Aphididae Myzus persicae
leaf vagrant Aphididae Aphis althaeae

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.

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 24.vi.2019