This book is a compilation of 19 contributions about biogeography, ecology and conservation of the Violet Copper Lycaena helle. Although this volume focuses on a single butterfly species, this taxon stands as a representative for many relict species and populations. Thus, this compilation is more than a simple monography on the Violet Copper. Authors from all over Europe describe the history and ecology of remnant populations, raise the question on how and why to protect relict occurrences and highlight the relevance of combining different methods, which are described in six method boxes. Finally, this book also is a plea for bringing together theoretical and practical conservationists.