This book serves as a definitive photographic reference for identifying butterflies and moths in Britain and Ireland. It meticulously details every species that regularly occurs in the region, including a special section on extinct or rare immigrant species. The primary focus then shifts to larger moths, ensuring comprehensive coverage of all regularly occurring species within Britain and Ireland.

This comprehensive guide is presented as the definitive photographic reference for British and Irish butterflies and moths. Its scope includes regularly occurring species as well as rare and extinct varieties, with a significant focus on larger moths. The material suggests a detailed and visually rich resource for identification purposes.