Harmologa amplexana

Hudson described this species as follows:

The expansion of the wings of the male is slightly under 3⁄4 inch, of the female slightly over 3⁄4 inch. The fore- wings of the male have the costa strongly arched at the base, the apex pointed and the termen curved; in the female the costa is very strongly arched at the base, becoming concave before the apex, which is very prominent, the termen being very strongly bowed outwards; very pale ochreous with brown markings; there is a narrow, very dark band from 1⁄4 of costa extending obliquely inwards to the disc, thence abruptly to the base—this marking is smaller, fainter and much more curved in the female; an oblique band from before the middle of the costa to the middle of the dorsum, Sharply defined towards the base, shaded towards the termen, but obsolete towards the costa in the male; an elongate curved mark on the costa from the middle almost to the apex, much larger and touching the central band in the male; several small markings near the termen, including a brownish-patch near the middle edged towards the termen with from two to four blackish dots; in both sexes the whole wing is very finely dotted and streaked with minute brown marks. …

H. amplexana is endemic to New Zealand. This species is found from the centre of the North Island down to and including the Otago region of the South Island.

Larvae of this species create silken webs amongst leaf litter and then feed on the same. Adults are on the wing from September until April and are attracted to light. During the day adult H. amplexana can be disturbed from native vegetation.