hogweed

organ parasitic mode stage note taxonomic group parasite
stem miner Cecidomyiidae Resseliella syringogenea
leaf scale Aleyrodidae Aleyrodes lonicerae
stem borer Agromyzidae Melanagromyza limata
stem borer Agromyzidae Melanagromyza heracleana
stem borer Agromyzidae Melanagromyza angeliciphaga
stem borer Agromyzidae Ophiomyia heracleivora
fruit borer Agromyzidae Liriomyza lutea
leaf gall Triozidae Trioza apicalis
leaf vagrant summer generation Aphididae Aphis fabae solanella
leaf vagrant summer generation Aphididae Aphis fabae fabae
fruit gall Cecidomyiidae Kiefferia pericarpiicola
flower gall Cecidomyiidae Contarinia nicolayi
flower gall Cecidomyiidae Lasioptera carophila
leaf down Erysiphales Erysiphe heraclei
leaf down Peronosporales Plasmopara nivea
leaf gall Aphididae Paramyzus heraclei
leaf gall Cecidomyiidae Contarinia heraclei
leaf gall Cecidomyiidae Macrolabis heraclei
leaf gall Taphrinales Protomyces macrosporus
leaf gall Taphrinales Taphridium umbelliferarum
leaf miner Agromyzidae Agromyza heraclei
leaf miner Agromyzidae Phytomyza angelicae
leaf miner Agromyzidae Phytomyza heracleana
leaf miner Agromyzidae Phytomyza sphondyliivora
leaf miner Agromyzidae Phytomyza pastinacae
leaf miner Agromyzidae Phytomyza spondylii
leaf miner Epermeniidae Epermenia chaerophyllella
leaf miner Tephritidae Cryptaciura rotundiventris
leaf miner Tephritidae Euleia heraclei
leaf miner Tortricidae Cnephasia stephensiana
leaf pustule Chytridiales Synchytrium aureum
leaf pustule aecia Pucciniales Puccinia nitidula
leaf pustule aecia uredinia telia Pucciniales Puccinia heraclei
leaf vagrant summer generation Aphididae Dysaphis lauberti
leaf vagrant summer generation Aphididae Semiaphis sphondylii
leaf vagrant Eriophyidae Epitrimerus heraclei
leaf vagrant Triozidae Trioza anthrisci
stem borer Cecidomyiidae Lasioptera stelteri
stem borer Cerambycidae Phytoecia cylindrica
stem gall Asterolecaniidae Planchonia arabidis
stem gall Curculionidae Lixus iridis
stem gall Cynipidae Timaspis heraclei
leaf vagrant summer generation Aphididae Aphis fabae
root collar vagrant summer generation Aphididae Anuraphis subterranea
root vagrant summer generation Aphididae Dysaphis crataegi
leaf vagrant doubtful Aphididae Aphis brohmeri
root collar vagrant Aphididae Dysaphis newskyi
leaf vagrant summer generation Aphididae Cavariella aegopodii
leaf vagrant summer generation Aphididae Cavariella archangelicae
leaf vagrant summer generation main Aphididae Cavariella pastinacae
leaf vagrant summer generation Aphididae Cavariella theobaldi
leaf vagrant Aphididae Macrosiphum euphorbiae

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 8.iii.2019