This species was described by Alfred Philpott in 1924, and named Simaethis albifasciata.

[4] George Hudson discussed and illustrated this species in his 1928 publication The butterflies and moths of New Zealand.

[6] Alfred Philpott described this species explaining that the wingspan is 11–12 mm.

On the forewings, the costa slightly is arched, the apex rounded, the termen straight.

Here, there is a straight white fascia running from the termen before tornus directed towards two-thirds of the costa, and reaching half-way across the wing.