Buff Ermine moth: Wingspan 28-40mm; UK flight time May-Jul.
female - plain antennae
male - feathered antennae
The photo above right of a Buff Ermine moth, either newly-emerged or very windblown and dishevelled so that its pattern is unclear, was taken by Diane Simkin in Cornwall.
BUFF ERMINE CATERPILLAR
The Buff Ermine caterpillar is brown with a light buff line and ginger tufts of hair.