The
Clouded Yellow is occasionally common in all areas of Saudi Arabia,
originating from North Africa and southern Europe. The upperside is golden to
orange yellow with a broad black margin on all four wings and a black spot near
the centre forewing. The underside lacks the black borders and is lighter, with
a more greenish tint, particularly on the forewings. In the forewing underside
is the same dark spot as on the upperside, but often with a light centre; the
hindwing underside has a white centre spot, often with a smaller white or dark
dot immediately above it. Sometimes, a row of black dots occurs on the
underwings' outer margins, corresponding to where the black border ends on the
upperside, Females differ from the males in having yellow spots along the black
borders on the upperside. In flight, it is easily identifiable by the intense
yellow colouring, and like all Colias species, they never open their
wings at rest.
