1. Current address: Chemistry Laboratory Services, California Department of Food and Agriculture, 3292 Meadowview Road, Sacramento, CA 95832
2. Current address: Division of Entomology and Parasitology, College of Natural Resources, University of California, Berkeley, CA 94720
3. Current address: Department of Entomology, University of Georgia, Athens, GA 30602
4. Current address: SERES Laboratories, Inc., 3331 Industrial Drive, Santa Rosa, CA 95403
5. Current address: Natural Product Sciences, Inc., University of Utah Research Park, 420 Chipeta Way, Salt Lake City, UT 84108