organ parasitic mode stage note taxonomic group parasite
flower borer Cosmopterigidae Eteobalea alypella
stem borer younger larva Cosmopterigidae Eteobalea albiapicella
flower borer older larva Cosmopterigidae Eteobalea albiapicella
leaf scale Aleyrodidae Asterobemisia obenbergeri
leaf scale Aleyrodidae Aleurotrachelus globulariae
leaf scale Diaspididae Aspidiotus nerii
leaf scale Diaspididae Contigaspis bilobis
leaf scale Diaspididae Aspidiotus bornmuelleri
stem scale Asterolecaniidae Asterolecanium rehi
leaf down Erysiphales Leveillula taurica
leaf miner Agromyzidae Liriomyza globulariae
leaf miner Agromyzidae Phytomyza globulariae
leaf miner Coleophoridae Coleophora rectilineella
leaf miner Gelechiidae Nothris lemniscellus
leaf miner Nepticulidae Glaucolepis alypella
leaf miner Nepticulidae Glaucolepis globulariae
leaf miner Nepticulidae Glaucolepis istriae
leaf miner Nepticulidae Glaucolepis liskai
leaf miner Nepticulidae Glaucolepis salicinae
leaf miner Tortricidae Cnephasia incertana
leaf pustule telia Pucciniales Puccinia globulariae

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 16.viii.2019