Caterpillar, Pupa and Adult
The emerging caterpillars begin feeding immediately and will moult three times within the first 5–6 weeks. Each caterpillar will then hibernate in a shrivelled leaf at the base of the plant, usually at the end of July. When they awaken the following March, they are half their previous size having shrunk during hibernation. After a period of feeding and growth, during which it moults one last time, the caterpillar is full size and ready to pupate. The chrysalis stage is formed amongst the leaf litter, and lasts just 10–14 days.
The adult butterfly flies between late April and June, being one of the earliest fritillaries to emerge. It will feed on the nectar from early spring flowers such as Bugle, Dandelion (Taraxacum officinale), and Lesser celandine.
There is a second brood during August.
Read more about this topic: Pearl-bordered Fritillary
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