Udea lugubralis is a moth in the family Crambidae. It was described by John Henry Leech in 1889. It is found in Japan and on the Kurile Islands,[1] as well as in China.[2]
The wingspan is about 27 mm. Adults are brown, with a slight cupreous tint. The forewings have a dark basal line and a darkly outlined stigmata, beyond them is a sharply serrated dark line, which curves abruptly towards the centre of the wing, then descends to the inner margin. The hindwings have a dark central line and discal spot.[3]