white melilot

organ parasitic mode stage note taxonomic group parasite
leaf down Erysiphales Erysiphe pisi var. pisi
root borer Curculionidae Hylastinus obscurus
stem borer Apionidae Stenopterapion meliloti
stem borer Agromyzidae Melanagromyza submetallescens
fruit vagrant Coleophoridae Coleophora trifolii
stem vagrant Aphididae Aphis comosa
systemic borer Anguinidae Ditylenchus dipsaci
fruit gall Cecidomyiidae Contarinia spec. on Melilotus
fruit gall Curculionidae Tychius breviusculus
fruit gall Curculionidae Tychius meliloti
leaf down Erysiphales Erysiphe trifoliorum
leaf down Peronosporales Peronospora meliloti
leaf gall Curculionidae Tychius crassirostris
leaf miner Agromyzidae Agromyza frontella
leaf miner Agromyzidae Agromyza nana
leaf miner Agromyzidae Liriomyza bryoniae
leaf miner doubtful Agromyzidae Liriomyza cicerina
leaf miner Agromyzidae Liriomyza congesta
leaf miner Gelechiidae Aproaerema anthyllidella
leaf miner Gracillariidae Phyllonorycter medicaginella
leaf pustule uredinia telia Pucciniales Uromyces baeumlerianus
stem vagrant Aphididae Acyrthosiphon pisum
leaf vagrant main Aphididae Therioaphis riehmi
stem vagrant Aphididae Aphis craccivora

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 27.ix.2018