1. Department of Entomology, 4138 Comstock Hall, Cornell University, Ithaca, NY 14853, USA.
2. Laboratory of Biochemistry and Genetics, NIDDK, National Institutes of Health, Building 8, Room 323, 8 Center Drive MSC 0840, Bethesda, MD 20892, USA.
3. Department of Molecular Biology and Genetics, 107 Biotechnology Building, Cornell University, Ithaca, NY 14853, USA.