Last modified: March 5, 2021, 10:21 a.m.
A very rare and local species in Belgium.
Dull green; head capsule and prothoracic plate black; pinacula conspicuously ringed white.
A loose cocoon, pupa brown.
The caterpillar makes a loose spinning between some flowers or an umbel of the foodplant, sometimes gregariously; May–July.
The last instar drops to the ground and makes a loose spinning in the soil or among detritus in which it pupates; August–September.
The species hibernates in the adult stage. Adults have been observed flying in the afternoon on warm days. They are more active at night and occasionally come to light.
The adults fly in one long generation a year: from August–September and after hibernation again from April towards May, occasionally even till July.