A major series on the butterfly fauna of Vietnam and the first comprehensive treatment of the Rhopalocera of this country.  The complete fauna will be covered in 7 volumes and the series will be completed within 5-6 years. For each volume, the introduction includes information for systematic of each family or subfamily, morphology of imago, habitats and life-cycles. Checklist, abreviations, references and index to scientific names are presented separately. The main section of each volume contains information for all species of the family or subfamily found in Vietnam, and keys to the species, genera and tribes. The text for each species includes the following paragraphs: type locality; synonyms; range; distribution and variation in Vietnam; taxonomic notes; habitats and biology; similar species. The excellent colour plates include a number of habitat photos and images of all species dealt with. Where necessary, line drawings of genitalia, venation and other details are given.