This is a very useful book for the serious moth-er, which should permit the diligent user to identify almost any pug moth encountered and goes into great detail regarding not only description of the moth, but also life cycle, larval stages, food plants etc. Indeed one of the stated aims is to "encourage the enthusiast to rear the pugs".
I must, however, echo the comments of a previous reviewer concerning the photographic plates. These are reproduced at approximately life size, which is all very well, but some of the pugs are very small indeed, so that without the aid of a lens, detail is very difficult to discern in these photographs. In these days of digital photography, the majority of people likely to be using this book will routinely photograph their moths and be able to examine them greatly magnified on a computer screen. This book would have been so much more useful if the photographs had been reproduced at several times life size - perhaps printing costs were the limiting factor.
Another feature I find irksome is that although the English name is given at the head of each species account, the text figures of wing shapes and patterns and genitalia give only the scientific names, which will presumably please the purists, but as the general convention these days is to use English names for the "macro" moths, I would have preferred English names in the text figures.
These minor criticisms aside, however, this is a book that all serious moth-ers should have on their bookshelf.