The fore-wings have the apex rather rounded and the termen somewhat bowed outwards; there is a small white basal patch speckled with black; beyond this are two dentate transverse lines abruptly bent inwards below costa; between this and the median band there is a broad band of the ground-colour; the median band is narrow with marked constrictions below costa and above dorsum, these constrictions being deepest on the outer edge of the band; the black lines forming the median band are very indefinite strongly dentate, the centre of the band is heavily sprinkled with white scales; the terminal area is broadly suffused with black; broadest towards apex; there are many white scales interspersed with the black and traces of a wavy whitish subterminal line; a terminal series of black marks.

The hind-wings have an oblique blackish basal patch speckled with white; two wavy blackish transverse bands on the median area; a very broad black terminal band, partially transversed by a fine wavy subterminal line.

[4][5] Along with the type locality,[6] this species has been collected at Homer,[7] as well as at the Rahine Range, Kaikōura Ranges, Jack's Pass in Hanmer, Porters Pass, Mount Cook, Macetown, Vanguard Peak and Advance Peak in Otago, Kepler Mountains and Eglinton Valley at Milford Sound.

[9] Charles E. Clarke notes he captured specimens flying over lichen covered rocks in native grass and herb habitat.

[9] This moth is classified under the New Zealand Threat Classification system as being "At Risk, Naturally Uncommon".