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 pitch of a seadhead of Dipsacus fullonum. It hibernates full-fed in the feeding place, and pupates there in a cocoon of silk and particles of pith. They are mainly active at night and come very rarely to light.