David G. James is associate professor of entomology at Washington State University. He is the coauthor of Life Histories of Cascadia Butterflies and was consultant editor on The Book of Caterpillars. He completed a PhD on the winter biology of Monarch butterflies and has published more than two hundred scientific papers on a wide range of entomological subjects. David Lohman is associate professor of biology at the City College of New York, a visiting scientist at the American Museum of Natural History, and a research associate at the Museum of Comparative Zoology at Harvard University and at the National Museum of Natural History in Manila. His research focuses on butterflies in Southeast Asia and the ecology, evolution, and conservation of biodiversity.