This volume is the first illustrated comprehensive reference book to all butterfly and skipper species known to occur in Altai, Sayans and Tuva, a territory situated in Northern part of Central Asia. All species are figured in colour (about 2500 images, including many type specimens from famous Russian and European museums). Many type specimens figured for the first time. Five colour plates and the dust jacket represent landscapes and photos of butterflies in nature. The book includes information on distribution, habitats, flight period, complete synonymy, type material, distribution maps of 243 species (more than 800 species and genus group taxa). The bibliography section consists of 700 entries.