Catarhoe cuculata, the royal mantle, is a moth of the family Geometridae.

It is found from Europe to western Central Asia and east Siberia.

The first crossline near the base of the forewing is red with a thick black border.

is a remarkable and perhaps unique aberration in which the dark bands of the central area are connected on the subcostal and median veins, enclosing a roundish white patch.

The larva is green or yellowish with conspicuous blackish or dark purple subdorsal stripes.