Iulactis insignis is a moth in the family Xyloryctidae. It was described by Edward Meyrick in 1904. It is found in Australia,[1] where it has been recorded from New South Wales and Queensland.
The wingspan is 11–12 mm. The forewings are shining white with a triangular blackish-grey blotch on the base of the dorsum and a deep golden-ochreous fascia from the middle of the costa to three-fourths of the dorsum, acutely angulated in the middle. Three deep golden-ochreous marks are found on the costa beyond this, connected beneath. There is a series of six longitudinal black lines before the termen, the two upper ones surrounded with ochreous suffusion. The hindwings are grey, lighter towards the base.[2]