Eugnorisma depuncta, the plain clay, is a moth of the family Noctuidae.

It is found in most of Europe, west to England, north to Scotland and Fennoscandia, south to southern France, Italy, Sicily and Greece, east up to the Caucasus.

Forewings light ochreous-brown; subbasal line anteriorly black-edged; first line black-edged posteriorly except towards dorsum; second partly dark-edged, on costa anteriorly blackish-edged; orbicular and reniform finely pale-edged, space between them and before orbicular browner; subterminal line anteriorly darker-edged.

Larva dull brown; a dorsal series of diamonds darker-outlined; spiracular sufFusedly darker, spiracles white, dark-edged; subspiracular ochreous-whitish; head light brown, darker-marked.

The larvae feed on Pulmonaria mollis, Lamium, Vaccinium myrtillus and Urtica dioica.