Griposia aprilina, also known as the merveille du jour, is a moth of the family Noctuidae, found in Asia and Europe.

Forewing whitish green; lines and markings velvety black, the median shade especially thick; upper stigmata large; all the black markings emphasised by white; hindwing blackish grey; the cellspot, outer line, and submarginal shade darker; a white terminal space before the black marginal line; the ab.

[3] Laid singly or in small numbers on branches, or in crevices in the bark of oak trees (Quercus species).

Larvae are greenish black, with a fulvous tinge; a dorsal series of dark medallions; dorsal line pale, interrupted, with black edges; spiracular line pale like the venter.

[4] 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.