Capsella bursa-pastoris

shepherd’s-purse

organ parasitic mode stage note taxonomic group parasite
leaf miner Curculionidae Ceutorhynchus erysimi
leaf down Erysiphales Golovinomyces tabaci
flower vagrant Aphididae Spatulophorus incanae
leaf vagrant summer generation Aphididae Aphis fabae solanella
root vagrant summer generation Aphididae Aphis sambuci
leaf vagrant Triozidae Bactericera tremblayi
stem miner Agromyzidae Ophiomyia alliariae
leaf vagrant Aphididae Macrosiphum euphorbiae
leaf vagrant Aphididae Aphis gossypii capsellae
leaf vagrant summer generation Aphididae Aphis frangulae beccabungae
leaf vagrant summer generation Aphididae Aphis fabae solanella
leaf vagrant summer generation Aphididae Aphis fabae fabae
systemic borer Anguinidae Ditylenchus dipsaci
fruit gall Cecidomyiidae Dasineura napi
flower gall Cecidomyiidae Gephyraulus capsellae
flower gall Eriophyidae Aceria drabae
leaf down Erysiphales Erysiphe cruciferarum
leaf down Erysiphales Golovinomyces orontii
leaf down Erysiphales Podosphaera drabae
leaf down Peronosporales Hyaloperonospora parasitica
leaf gall Aphididae Brevicoryne brassicae
leaf gall Curculionidae Ceutorhynchus chalibaeus
leaf miner Agromyzidae Liriomyza bryoniae
leaf miner Agromyzidae Liriomyza xanthocera
leaf miner Curculionidae Ceutorhynchus minutus
leaf miner Drosophilidae Scaptomyza flava
leaf pustule Albuginales Albiginaceae Albugo candida
leaf pustule aecia Pucciniales Puccinia isiacae
leaf vagrant Aphididae Lipaphis erysimi
leaf vagrant summer generation Aphididae Aphis fabae
leaf vagrant summer generation Aphididae Aphis frangulae
leaf vagrant summer generation Aphididae Aphis nasturtii
leaf vagrant rarely Aphididae Sitobion avenae
leaf vagrant Aphididae Myzus ascalonicus
stem gall Asterolecaniidae Planchonia arabidis
root collar gall Curculionidae Ceutorhynchus assimilis
root collar gall Plasmodiophorales Plasmodiophora brassicae
root gall Heteroderidae Heterodera avenae
root gall Heteroderidae Heterodera goettingiana
root gall Heteroderidae Heterodera schachtii
leaf vagrant summer generation Aphididae Myzus persicae
leaf vagrant summer generation rarely Aphididae Rhopalosiphum padi
stem vagrant Aphididae Aphis craccivora
leaf vagrant summer generation Aphididae Aphis frangulae frangulae
leaf vagrant Aphididae Aphis gossypii
stem vagrant rarely Aphididae Acyrthosiphon pisum
leaf vagrant Aphididae Aulacorthum solani
root collar vagrant Aphididae Brachycaudus lateralis
leaf vagrant summer generation main Aphididae Brachycaudus cardui
leaf vagrant Aphididae Myzus ornatus

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 12.iv.2019