This is a chart giving an idea of when you are likely to find each butterfly species on the wing. It is specific to Dorset. The version below is too small to use, but gives you an overall impression of flight times. It is not possible to offer a PDF version, as this splits the information across multiple pages. The Flight Times Excel spreadsheet gives you a version you can re-size on your screen more easily.
Flight times chart
When each butterfly is on the wing in Dorset