organ parasitic mode stage note taxonomic group parasite
leaf scale Aleyrodidae Bemisia afer
leaf scale Aleyrodidae Aleurocanthus spiniferus
leaf scale Aleyrodidae Trialeurodes lauri
leaf scale Diaspididae Aspidiotus nerii
stem scale Coccidae Saissetia oleae
leaf scale Aleyrodidae Bemisia lauracea
leaf scale Aleyrodidae Bemisia tabaci
leaf scale Coccidae Protopulvinaria pyriformis
leaf scale Diaspididae Aonidia lauri
leaf scale Coccidae Pulvinaria floccifera
leaf scale Coccidae Coccus hesperidum
systemic scale Diaspididae Parlatoria oleae
leaf scale Diaspididae Unaspis euonymi
leaf vagrant Tortricidae Ditula angustiorana
stem scale Coccidae Pulvinaria regalis
flower gall Eriophyidae Cecidophyopsis malpighianus
leaf bud gall Eriophyidae Eriophyes lauricolus
leaf bud vagrant Eriophyidae Calepitrimerus cerosus
leaf down Erysiphales Pseudoidium lauracearum
leaf gall Eriophyidae Cecidophyes lauri
leaf gall Triozidae Trioza alacris
leaf miner Gracillariidae Caloptilia laurifoliae
leaf miner Gracillariidae Caloptilia nobilella
leaf miner Gracillariidae Caloptilia staintoni
leaf vagrant Eriophyidae Calepitrimerus russoi
stem pustule doubtful Exobasidiales Laurobasidium lauri

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 20.ii.2019