organ parasitic mode stage note taxonomic group parasite
leaf hidden Elachistidae Anchinia cristalis
fruit borer Tortricidae Lobesia botrana
leaf scale Aleyrodidae Bemisia tabaci
leaf scale Diaspididae Aspidiotus nerii
leaf vagrant Aphididae Aphis gossypii
flower gall Cecidomyiidae Dasineura daphnephila
flower vagrant Eriophyidae Aculus blagayanae
leaf bud gall Cecidomyiidae Dasineura daphnes
leaf gall Eriophyidae Aculus daphnes
leaf gall Eriophyidae Mesalox daphnei
leaf miner Agromyzidae Liriomyza approximata
leaf miner Lyonetiidae Phyllobrostis daphneella
leaf miner Lyonetiidae Phyllobrostis fregenella
leaf miner Lyonetiidae Phyllobrostis hartmanni
leaf miner Lyonetiidae Phyllobrostis jedmella
leaf vagrant Aphididae Macrosiphum daphnidis
stem gall Lyonetiidae Phyllobrostis eremitella
stem gall Rhizobiales Agrobacterium tumefaciens
root collar gall Actinomycetales Rhodococcus fascians
leaf vagrant Eriophyidae Calepitrimerus orjensis

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 5.xi.2019