California Insects (California Natural History Guides)
Jerry A. Powellis Professor of the Graduate School and Director of The Essig Museum of Entomology at the University of California, Berkeley. He has written extensively on Lepidoptera and devotes about 75 days each year to field research.Charles L. Hoguewas Senior Curator at the Natural History Museum of Los Angles County. He wrote numerous popular and technical papers, mainly on Diptera, as well as several general books on insects. He died in 1992.