|Common Dog-violet, Hairy Violet and Marsh Violet.
Adults feed primarily on the nectar of Thistles and Knapweeds.
58 - 68 mm.
Pastures and flowery banks, and nearby areas where
the preferred foodplants for the larvae, grow.
Adults generally emerge in the middle of June,
reaching a peak in early July. There is one generation each year.
Eggs are laid either directly on the foodplant,
or on a suitable platform nearby, such as a twig,
grass stem or dead leaf. Eggs are yellow when
first laid but turn a dark purple after a few days
and, eventually, a dark grey just before the larva
emerges. This stage lasts between 2 and 3 weeks.