Plant Parasites of Europe

leafminers, galls and fungi

gallers on Lens

Dichotomous table for gallers on Lens

by Hans Roskam

1a On parts above ground => 3

1b On roots => 2

2a Rotund- to oblong-oval nodules, about 3 mm long laterally attached on main- and side-roots. L. culinaris, nigricans: Rhizobium leguminosarum

2b Outside of roots hardly disfigured, inside containing giant cells; bearing temporarily white to dark, about poppy seed- sized egg capsules (cysts). L. culinaris, nigricans: Heterodera schachtii

3a Leaflets of many terminal leaves rolled inwards and upwards, ± bent. L. culinaris, nigricans: Aceria trifolii

3b Flower bud swollen, unopened. L. culinaris: Contarinia sp.

= Early records of Dasineura viciae and Asphondylia ervi on “lentils’” need confirmation.

c Flower bud swollen, unopened. L. culinaris: Contarinia lentis

Last modified 21.v.2020