Finding Butterflies in Arizona, by Bailowitz and Brodkin, is a welcome addition to available literature on the fauna of Arizona, and one of the first of it's kind that I've seen in this format. It will be particularly helpful for birders who are interested in learning about and finding butterflies. The book is arranged very much like a typical bird-finding guide, a major plus. The major biotic regions of the state are described in the front of the book, and then broken down into fairly concise but clear chapters devoted to each region. Specific species, both common and rare, are discussed in each chapter, including the best season to look for them. The last third of the book describes where to look by species and is arranged taxonomically, starting with the swallowtails and ending with the skippers, and is fairly complete. Towards the back of the book is a chapter describing what to look for by season, and is extremely helpful. A checklist is featured at the end of the book.
There are only a few pages of butterfly photos in the book, mostly common species, and no real natural history info,so anyone without strong knowledge of the local lepidofauna should bring a field guide with them, either a general guide like the Kaufman or Peterson guides, or an Arizona-specific or southwest specific field guide, when using this book in the field.