A useful and innovative work that combines a field guide to the caterpillars with a field guide to their host plants. Host plant pictures are in general hard to come by, especially in a single volume, since they don't fall under a general group such as Wildflowers or Trees, and many are not particularly showy. About 100 pages of this 300+ page volume are devoted to the plants, 150 pages to the caterpillars, the remainder covers natural history information about this oft-neglected (not to say despised) stage of the lepidopteran life cycle. Only a few adult butterfly pictures appear, in the general introduction, but as we know those have been widely published elsewhere. The only additions I could wish for would be pupal images, and perhaps more than the single instar pictured here for those species that change dramatically over their larval life span (such as the Black Swallowtail). If you regularly hunt for bugs in FL, this would be a worthwhile addition to your library.