wood spurge

organ parasitic mode stage note taxonomic group parasite
leaf scale Aleyrodidae Aleyrodes proletella
leaf scale Aleyrodidae Bemisia tabaci
root borer Sesiidae Chamaesphecia amygdaloidis
stem borer Curculionidae Thamnurgus euphorbiae
systemic gall Eriophyidae Eriophyes euphorbiae
fruit gall Cecidomyiidae Dasineura capsulae
flower gall Eriophyidae Aculops glabriflorae
leaf bud gall Cecidomyiidae Dasineura schulzei
leaf bud gall Cecidomyiidae Spurgia euphorbiae
leaf borer Agromyzidae Ophiomyia beckeri
leaf down Erysiphales Podosphaera euphorbiae
leaf down Peronosporales Peronospora cyparissiae
leaf miner doubtful Agromyzidae Liriomyza heringi
leaf miner Agromyzidae Liriomyza pascuum
leaf pustule aecia Pucciniales Endophyllum euphorbiae-silvaticae
leaf pustule uredinia telia Pucciniales Melampsora euphorbiae-amygdaloidis
stem borer Anthomyiidae Pegomya argyrocephala
stem vagrant Aphididae Macrosiphum euphorbiellum
leaf vagrant Aphididae Acyrthosiphon euphorbiae


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 28.ii.2019