Rich Bailowitz was born and raised in New York City, received a BA in Music from Queens College in 1969, and eventually settled in Arizona in 1974. He has been interested in temporal and spatial distribution of butterflies, largely in Arizona and Sonora, and received his MS in Entomology from the University of Arizona in 1985. In addition to the earlier version of Butterflies of Southeastern Arizona with Jim Brock as co-author, he is the author of nearly fifty peer-reviewed writings and is the primary author of 70 Common Butterflies of the Southwest with Doug Danforth, Finding Butterflies in Arizona with Hank Brodkin, and Field Guide to the Damselflies and Dragonflies of Arizona and Sonora with Doug Danforth and Sandy Upson. He and his wife, Elaine Greenapple, reside in Tucson. Jim Brock, a California native, moved to Arizona in 1977. Jim is the author or co-author of four books on butterflies, Butterflies of North America with Kenn Kaufman, Caterpillars of the Field and Garden with Tom Allen, Butterflies of Southeastern Arizona with Rich Bailowitz, and Butterflies of the Southwest. His photographs of regional butterflies and caterpillars are featured in the ever-popular Quick Reference fold-out guides for southern, central, and northern Arizona. He is primarily a field lepidopterist where his main interest is finding and determining larval hostplants for skippers anywhere in the Neotropics. His most recent project involves a survey of butterflies in the Cosnipata Valley of Peru in association with the Smithsonian Institution and the Museo de Historia Natural in Lima, Peru. No less than five butterfly taxa bear his name. Jim is also a research associate of the McGuire Center for Lepidoptera and Biodiversity. Jim and his wife Joan live in Tucson.