Dichonia aprilina (merveille du jour) is a moth of the family Noctuidae.It ranges from Sardinia and South-East Russia (foothills of the Ural mountains to the Black Sea) from the southernmost part of Norway and Saint Petersburg through northern and central Europe to southern France and Northern Italy, as well as in Castile. Also in Western and Central Anatolia and the Caucasus.Also in Asia minor. There is recent evidence from the Alborz mountain range.