141208 Oak Beauty Biston strataria Wingspan 23mm. A well-marked moth that rests with its wings spread flat; markings provide good camouflage against lichen-covered tree bark. Adult has marbled reddish-brown and greyish-white wings with black flecks and stippling. Flies March–April. Larva feeds on various deciduous trees including oaks. Widespread and common only in England and Wales.