Colostygia multistrigaria, the mottled grey, is a species of moth in the family Geometridae.

The basal patch, central band, and shade before the whitish submarginal line are also sometimes darker.

The larva is uniformly cylindrical, brown-grey, tinged with green dorsally, rather paler ventrally.

Adults are on wing from March to April[4] in one generation per year.

[6] About dusk the moths may be seen on the lower parts of fences, tree-trunks, rocks, sitting on grass and other vegetation.