The mysterious decline of the Black-veined White has been the subject of discussion amongst entomologists for over a century. This impressive butterfly became extinct in Britain in the 1920s. Since then, many reintroductions have been attempted, all of which have failed. It is a large species with a powerful, soaring flight. When they become worn, the wings look like parchment patterned with distinctive black veins. So as this was taken in Wiltshire either I am wrong in the identification or this or is a very rare find indeed!! I captured this one first thing in the morning whilst it was covered in dew..