1. (JTL, CB) 800 22nd Street, Suite 6000, Department of Biological Sciences, George Washington University, Washington, DC 20052, USA (e-mail: lillj@gwu.edu)
2. (MRW) 406 Reiss B uilding, Departm ent of Biology, Georgetown University, Washington, DC 20057, USA (e-m ail: weissm@georgetown.edu)
3. (RRK) Systematic Entomology Laboratory, Beltsville Agricultural Research Center, Agricultural Research Service, USDA, c/o National Museum of Natural History, Smithsonian Institution, P.O. Box 37012, MRC-168, Washington, DC 20013-7012, USA (e-mail: Ro