The adult female moth has a brown face, with ochreous scales. The labial palpus is brown, with some ochreous scales. The forefemur anteriorly has brownish and shining, whitish scales. The wing expanse is 35 mm.

The forewing above is rusty-brown to light brown, with a rather indistinct median band, and with a postmedian wavy reddish-brown band.
Underneath: it is without yellow scales, but has a small medial brownish spot, with median band forming medial triangular projection outwards, edged with whitish band, not interrupted medially, with medium-sized apical and medial whitish square spots at the termen; costa curved distally, apex slightly rounded.

The hindwing above is the same colour as forewing, with wavy, brown and dark ochreous median and posterior lines, without white medial spot near termen.
Underneath: it is coloured and patterned similar to forewing, but with median band forming rounded projection outwards, with brown postmedial band not narrowing towards the hind margin, and with additional whitish square spot at the anal angle.

The male has not been described.

Distribution : Australia (northern Queensland: Cairns).

Etymology: the species name combines the Latin rutilus (reddish) and mixtim (mixed) and refers to the wing colouration.

Further reading :

Olga Schmidt
Revision of Scotocyma Turner (Lepidoptera: Geometridae: Larentiinae) Australian Journal of Entomology, Volume 44 (2005), pp. 257–278.

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