Each volume in the very well known series The Moths and Butterflies of Great Britain and Irelandcontains special introductory chapters on important aspects of the study of British Lepidoptera; keys to families and species; a systematic section consisting of a full description, details of the life history, and a distribution map for each species, as well as structural drawings where nessesary. In addition, all species and significant variants are illustrated in colour. Also available in paperback (ISBN 978-09-46-58972-2).

This is part one of volume four of The Moths and Butterflies of Great Britain and Ireland. Due to its extent, the volume is published in two parts, and this text contains a special chapter followed by a systematic account of the Oecophoridae and the smaller families - a total of 147 species.