Phlogophora meticulosa
Caterpillars munch on a range of plants including:
Adults tend to feed on the flowers of grasses, including those of the Common Reed.
This moth spends the winter as a caterpillar and continues to feed during mild weather.
There is even more about this species on the main Butterfly Conservation website
The angular markings on the wings of this moth help to break up its outline, making it harder for predators to spot.