De Sélys-Longchamps E. 1844.
Énumération des insectes Lépidoptères de la Belgique. — Mémoires de la Société royale des Sciences de Liége
1–35. On page 21.
Specimens in nature
The larva lives in the roots of the food plants. They hibernate full-fed in the feeding place. Pupation takes place in June in the same place. The adults are active in late afternoon and later come to light.
The adults have been observed from the end of June till well in August.