Thectophila plagiaula n. sp.
♂. 12–15 mm. Head white, a grey median stripe. Palpi white. Thorax grey, a white stripe on each side of back. Forewings narrow-lanceolate; grey; costal area variably tinged or suffused white; a white subdorsal streak from base to tornus, leaving a narrow grey dorsal streak; cilia white, towards tornal area tinged grey. Hind-wings grey; cilia whitish-grey.
Freehold Range, Lake Ohau, amongst snow-grass at dusk, 4000 feet, December (S. Lindsay); 2 ex. (type Canterbury Museum).
I think this may quite possibly be the other sex of acmotypa Meyr., described from a single female, but as it differs so much in markings, and comes from a separate (but similar) locality, I consider it should bear a special name until the sexes are taken together.