Plant Parasites of Europe

leafminers, galls and fungi

gallers on Atropa

Dichotomous table for gallers on Atropa bella-donna

by Hans Roskam

1a On leaves => 2

1b Roots hardly changed, with giant cells inside at proximal part of eelworm. The first white, soon yellow, eventually brown females (cysts) detach from the roots and drop when mature. Globodera rostochiensis

2a Malformations caused by animals => 3

2b Leaf blade with slightly thickened, yellowish, later on pale brownish spots; with white aecia on underside, spermogonia on upper side. Aecidium belladonnae

3a Large parts of leaf blades, often loosely rolled downwards over its top and mostly one-sided; strongly curled and deep green, especially close to the froth-covered nymph. Philaenus spumarius

3b Leaf blade of single or several terminal leaves slightly deflected and curled on all sides. Macrosiphum euphorbiae

3c In similar malformations. Myzus persicae

Last modified 3.vi.2020