bloody crane’s-bill

organ parasitic mode stage note taxonomic group parasite
flower gall Curculionidae Limobius borealis
root gall rarely Sesiidae Pyropteron triannuliformis
root borer Sesiidae Pyropteron leucomelaena
leaf leaf spot Capnodiales Ramularia geranii
fruit gall Cecidomyiidae Dasineura geranii
leaf down Erysiphales Erysiphe geraniacearum
leaf down Erysiphales Podosphaera fugax
leaf gall Eriophyidae Aceria dolichosoma
leaf gall Eriophyidae Aceria geranii
leaf gall Eriophyidae Epitrimerus geranii
leaf miner Agromyzidae Agromyza nigrescens
leaf miner Buprestidae Habroloma geranii
leaf pustule aecia Pucciniales Aecidium tranzschelianum
leaf pustule aecia Pucciniales Puccinia polygoni-amphibii
leaf pustule aecia uredinia telia Pucciniales Uromyces geranii
leaf pustule uredinia telia Pucciniales Puccinia oerteliana
leaf vagrant Aphididae Acyrthosiphon malvae malvae

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 11.iii.2019