[4][2] In 1885 Meyrick gave a detailed description of the species using specimens collected near Palmerston North and Christchurch.

[5] George Hudson discussed and illustrated this species under the name Scoparia acompa in his 1928 book The butterflies and moths of New Zealand.

[2] The male lectotype, collected in Palmerston North, is held at the Natural History Museum, London.

Head and thorax pale ochreous mixed with whitish, shoulders narrowly suffused with dark fuscous.

Forewings very elongate, narrow, triangular, costa straight, apex round-pointed, hindmargin slightly sinuate, very oblique; pale brownish-ochreous, irregularly irrorated with white on veins, and generally with scattered dark fuscous scales; base of costa rather suffused with dark fuscous; some blackish scales on submedian fold before first line; first line hardly whitish, posteriorly margined with dark fuscous, rather strongly curved; orbicular small, linear, black, touching first line; claviform smaller, similar, generally indistinct; reniform dot-like, blackish; second line obscurely whitish, anteriorly dark-margined, somewhat curved above middle, otherwise straight; a row of blackish dots on hindrnargin; cilia whitish, with two fuscous-grey lines.