The diversity of life in the tropics is such that a tome like this covers just three of families of butterflies, not the whole lepidopteran fauna as other reviewers have pointed out. Nevertheless, these three are both important and conspicuous, including some of the most beautiful and sought after of tropical butterflies such as the Morphos, Owl Butterflies and Heliconiids. And, because of the paucity of literature for this region, this guide will prove useful well beyond the frontiers of Costa Rica where many of the same genera and even species occur - I use it all the time in Venezuela for example.
The photographic plates and illustrations are superb and the text is a delight with a host of information on natural history as well as identification.
Definitely a must for the entomologist and serious naturalist.