The caterpillars are seen from July to September and are very characteristic: greyish-green or brown with two enormous, black eyespots towards the head. When disturbed, they swell up to show these spots and scare-off predators. The caterpillars feed on willowherbs, fuchsia and bedstraw, and the adults feed on nectar. The caterpillars overwinter as chrysalides, hidden amongst low vegetation or in the soil.
To see the adult moth click here