Euphalacra nigridorsata is a moth in the Drepanidae family. It was described by Warren in 1897. It is found in the north-eastern Himalayas. The wingspan is 39 mm for males and 45 mm for females. The forewings are pale ochreous with pale grey-brown suffusion and lines. There is a diffused grey-brown streak from the base through the cell, as well as three fine, very acutely dentate brown lines before the middle, marked with dark points on the veins. There is a blackish dot at the middle of the discocellular, proceeded by a pale ochreous elongated spot. There is a smaller blackish dot at the lower end of the cell and three strongly waved postmedian brown lines, marked with a brownish streak running through to the upper tooth and preceded by an oblique streak of the pale ground colour. There i