Cryptophasa opalina is a moth in the family Xyloryctidae. It was described by Alfred Jefferis Turner in 1900. It is found in Australia,[1] where it has been recorded from the Northern Territory, Queensland and Western Australia.
The wingspan is about 29 mm. The forewings are white with a moderately broad fascia from the costa near the base, narrowing to the inner-margin at one-fourth, produced along the costa to the base, near the costa grey, then dark-fuscous with purple reflections. There is an incomplete interrupted line posterior and parallel to this, dark-fuscous with purple reflections. There is a large fascia from the costa before the middle, much dilated in the disc and on the inner-margin, on the costa and on the posterior margin grey, the remainder a mixture of dark-fuscous with purple reflections, ochreous-brown, and white scales. There is a broad grey line parallel to the hindmargin, separated by a fine white line from a broad grey line on the margin. The hindwings are grey, towards the inner-margin whitish.[2]