The wingspan is 17–20 millimetres (0.67–0.79 in). The moths have transparent wings, which are scaled only on the wing veins, the discal spot and the wing edges. The scales shine in blue-black shades. At the apex of the forewings there are weakly formed reddish or yellowish longitudinal stripes. In the middle, an elongated black-brown discal spot can be seen, which extends from the front to the back edge. The hind wings have a narrow dark marginal band and a small black-brown discal spot. The antennae are black and yellow dusty on the underside. The black thorax has lateral yellow stripes. On segments two, four, six and seven of the black abdomen there are thin yellow rings in the males. Female moths show equally coloured rings on segments two, four and six. The tufts are strongly fan-shaped and of blue-black color.
Similar species
There is a great similarity to the following species:
