Noctua interjecta


Noctua interjecta, the least yellow underwing, is a moth of the family Noctuoidea. It is found in Europe.

Technical description and variation

The wingspan is 31–36 mm. The length of the forewings is 14–17 mm. Forewing greyish rufous, sometimes darkened with fuscous; lines and stigmata a little darker, often very obscure; hindwing orange yellow with a broad marginal black border; costal and inner margins, a submedian streak from base, and the cell blackish; fringe yellow.

Biology

The moth flies in one generation from late June to August.
Larva pale ochreous with black dots; the lines pale, with darker edges.
The larvae feed on various grasses and herbaceous plants such as meadowsweet and Malva sylvestris.

Subspecies