The wingspan is about 10 mm. The forewings are white; sometimes an indistinct yellowish fascia towards apex, often entirely absent. Hindwings whitish-grey.
A small snow-white moth. The first joint of the antennae is greatly expanded and forms an "eyelid" over the compound eye. The antennae is filamentous, light brown and about 4/5 as long as the forewing. The innermost, greatly expanded joint is snow-white. The head, forebody, and wings are all gleaming white. In the outer part of the forewing (where the wing fringes begin) there may be a faint, yellowish transverse stripe that does not reach all the way to the leading edge. The hind body is brownish-grey with a white tail tassel.
[1]
The moths fly boldly towards dusk, and come freely to lamps, from June to July depending on the location. It prefers dry open habitats.[2][3][4][5]
^ Zagulajev, A.K., 1987 Opostegidae ; in G.S. Medvedev (ed.): Keys to the insects of the europaean part of the USSR, Vol.IV: Lepidoptera, part 1 (english translation), Oxonian Press Pvt.Ltd., New Dehli, 1987
^Meyrick, E., 1895 A Handbook of British Lepidoptera MacMillan, London
