Synopsis The present book 'Handbook on Butterflies of Himachal Pradesh" is a part of the above venture. For these studies, the collection of butterflies made in Zoological Survey of India, Solan for the last over three decades was utilized. The localities from where the collections were poorly represented, were surveyed afresh. All efforts have been made to collect as many species as possible from nearly all the districts of Himachal Pradesh. This book, however, describes 107 species including three new records to the area. Low diversity of butterflies in the region may be due to changed ecological conditions and less representation of small sized and unattractive butterflies which might have escaped the attention of the collectors.