This volume represents another significant contribution to a series on European Geometridae that will be seen in retrospect as perhaps the most significant milestone in our understanding of that fauna.[...] The book brings together an immense and diverse amount of information in a clear and cohesive manner that will retain its value for many years to come. It is therefore an investment well worth making.- Jeremy Holloway (Entomology Department, Natural History Musem, London). Journal of the Lepidopterists’ Society 60(2), 2006, 179–180