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


| Lesser broad-bordered yellow underwing | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Lepidoptera |
| Superfamily: | Noctuoidea |
| Family: | Noctuidae |
| Genus: | Noctua |
| Species: | N. janthe |
| Binomial name | |
| Noctua janthe Borkhausen, 1792 | |
The wingspan is 30–40 mm. The length of the forewings is 16–20 mm. 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. See Townsend et al.[1]
The moth flies in one generation from late June to September. The larvae feed on various deciduous trees, shrubs and herbaceous plants.[2]
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| Taxon identifiers |
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