Legs whitish-ochreous, greyish-tinged, anterior pair dark grey, posterior tibiae with dark-grey scales at origin of spurs.

Forewings elongate, very narrow, broadest near base, long-pointed; whitish-ochreous; an ochreous-fuscous or dark fuscous streak along costa from base to 3⁄4, sometimes almost obsolete; an ochreous-fuscous or dark fuscous broadly V-shaped mark before middle, more or less suffused, variable in thickness, its angle resting on inner margin, extremities nearly reaching costa; a longitudinal line in posterior half of disc, a spot at apex, and an elongate spot at anal angle ochreous-fuscous or ochreous, sometimes partially connected : cilia grey.

[2][5] Historically this species occurred at Wellington and Dunedin,[6] and in 1915 Charles E. Clarke collected a specimen in mid December at Silverstream, Upper Hutt.

[7] A further specimen was collected in early February in 1932 in the Pohangina Forest Reserve and was used by George Vernon Hudson to create an illustration of the species.

[8] In more recent times S. campylocha has been found to be present in western and eastern Otago including in the Matukituki Valley.