organ parasitic mode stage note taxonomic group parasite
fruit borer Tortricidae Cydia succedana
fruit vagrant Coleophoridae Coleophora albicosta
leaf bud borer Gelechiidae Mirificarma mulinella
root vagrant larva Curculionidae Sitona striatellus
root vagrant larva Curculionidae Andrion regensteinense
stem gall Apionidae Pirapion immune
leaf vagrant adult Apionidae Exapion fuscirostre
unknown borer larva doubtful Apionidae Stenopterapion cantabricum
fruit borer larva Curculionidae Pachytychius sparsutus
fruit gall larva Apionidae Exapion ulicis
leaf scale Diaspididae Aspidiotus nerii
stem scale Diaspididae Mercetaspis benitezi
stem scale Diaspididae Diaspidiotus cecconii
root borer Sesiidae Bembecia uroceriformis
root borer Curculionidae Hylastinus obscurus
leaf bud gall Eriophyidae Aceria genistae
stem gall Eriococcidae Rhizococcus devoniensis
leaf vagrant doubtful Psyllidae Arytaina genistae
stem miner Gracillariidae Phyllonorycter ulicicolella
fruit gall Urocystidales Thecaphora ulicis
flower gall Apionidae Protopirapion atratulum
flower gall summer generation Cecidomyiidae Asphondylia ulicis
flower gall Cecidomyiidae Dasineura gallica
leaf bud gall spring generation Cecidomyiidae Asphondylia ulicis
leaf bud gall Cecidomyiidae Dasineura ulicis
leaf miner Agromyzidae Agromyza johannae
leaf miner Coleophoridae Coleophora saturatella
leaf pustule uredinia telia Pucciniales Uromyces ulicis
stem gall Apionidae Stenopterapion scutellare
stem vagrant Aphididae Aphis craccivora
stem vagrant Aphididae Aphis ulicis


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.


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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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 22.x.2019