Richard South, The Moths of the British Isles… (1920)
“ If by any chance a young caterpillar gets driven away from the egg-shell, death is certain to result, as I could never induce them to feed on portions of empty shells left by others; nor would they eat the leaves or the brown stipules of the beech, which it has been suggested they do eat. In no single instance did they eat other food in their first skin save and alone the one meal of their own egg-shells." The caterpillars feed on beech, and also occasionally on birch, oak, hazel, and some fruit trees, and may be found from July to September. ”
