Lesser Broad-bordered Yellow Underwing

Noctua janthe, the lesser broad-bordered yellow underwing, is a moth of the family Noctuidae. Some authors consider Noctua janthe and Noctua janthina to be the same species. It is found in Europe and North Africa.

The wingspan is 30–40 mm (1.2–1.6 in). The length of the forewings is 16–20 mm (0.63–0.79 in). The ground colour of the forewings varies from bright ochre to gray to brown, often with a reddish or light purple tint. Orbicular and reniform are not clearly marked. The hindwing is orange-yellow with a broad distal black band. This species can only be separated from Noctua janthina by examination of the genitalia.