[4][2] George Hudson, in 1928, discussed and illustrated this species in his book The butterflies and moths of New Zealand under the name Capua plinthoglypta.

Forewings elongate - triangular, costa gently arched, apex rounded, hindmargin rather strongly sinuate, oblique; pale fuscous-reddish, irregularly spotted with ochreous; markings deep ochreous, partially mixed with black and ferruginous; a streak from base of costa to middle of inner margin; a second from 1⁄3 of costa to 3⁄4 of inner margin; a third from costa immediately beyond second, suddenly bent round above middle, and terminating on costa at 4⁄5, edged above from angle onwards by a snow-white streak attenuated posteriorly; a fourth from costa, immediately beyond termination of third, obliquely inwards to disc beyond middle, thence acutely angulated to middle of hindmargin, edged on apical side throughout by a clear white streak interrupted on each side of angle, included apical space ochreous, marked with black on hindmargin; two small leaden-grey spots between second and third streaks towards costa, and two others between third and fourth, lower of these larger; an ochreous streak along lower half of hindmargin, edged with black on margin : cilia ochreous, with a dark fuscous apical bar.

Hindwings pale whitish-grey, suffusedly spotted with grey; cilia grey-whitish, round apex whitish-ochreous.

[6] The larva of this species has been described by George Hudson as follows: The larva, which feeds on rimu (Dacrydium cupressinum) is about inch in length; cylindrical, slightly tapering posteriorly; the head is yellowish-brown with two U-shaped dark marks on frons; segment 2 is horny, semitransparent, showing back portion of head through it; rest of body pale green with segmental divisions marked in paler green; a paler green lateral ridge; a subdorsal row of small warts, each wart emitting a fine bristle, the warts on the thoracic segments slightly larger; anal segment with dark green dorsal plate.

[6] The larvae of this species lives underneath silken webs amongst the leaves of rimu trees.

[5] They pupate in a loose cocoons created from silk and frass amongst the leaves of its host tree.