Pearl-bordered fritillary  (Boloria euphrosyne)

For more information on the pearl-bordered fritillary see:

• Butterfly Conservation:
  www.butterfly-conservation.org/
• Butterfly Conservation's Species Action Plan:
  www.butterfly-conservation.org/downloads.asp?PageId=73
• Asher, J., Warren, M., Fox, R., Harding, P., Jeffcoate, G., and Jeffcoate, S. (2001) The Millennium Atlas of Butterflies in Britain and Ireland. Oxford University Press, Oxford.