spotted dead-nettle

organ parasitic mode stage note taxonomic group parasite
stem borer larva Curculionidae Coeliastes lamii
leaf vagrant summer generation Aphididae Myzus persicae
leaf vagrant rarely Aphididae Cryptomyzus alboapicalis
leaf vagrant Aphididae Ovatomyzus stachyos
stem miner Agromyzidae Ophiomyia labiatarum
flower gall Cecidomyiidae Dasineura lamii
leaf bud borer Cecidomyiidae Contarinia lamiicola
leaf bud gall Cecidomyiidae Dasineura lamiicola
leaf bud gall Cecidomyiidae Macrolabis lamii
leaf down Erysiphales Neoërysiphe galeopsidis
leaf down Peronosporales Peronospora lamii
leaf leaf spot Capnodiales Ramularia lamii
leaf leaf spot Diaporthales Ascochyta lamiorum
leaf gall Aphididae Aphis lamiorum
leaf gall Cecidomyiidae Contarinia lamii
leaf miner Agromyzidae Agromyza flavipennis
leaf miner Agromyzidae Amauromyza labiatarum
leaf miner Agromyzidae Amauromyza lamii
leaf miner Agromyzidae Amauromyza morionella
leaf miner Agromyzidae Liriomyza strigata
leaf miner Sciaridae Phytosciara halterata
leaf vagrant Aphididae Cryptomyzus ulmeri
leaf vagrant summer generation Aphididae Cryptomyzus galeopsidis
stem vagrant Aphididae Brachycaudus lamii

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.

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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.vi.2019