Author Affiliations +
David R. Smith,1 Gaye Williams2
1(DRS) Systematic Entomology Laboratory, ARS, U. S. Department of Agriculture, c/o Department of Entomology, National Museum of Natural History, Smithsonian Institution, P.O. Box 37012, MRC 168, Washington, DC 20013-7012 (e-mail: ) sawfly2@aol.com
2(GW) Maryland Department of Agriculture, Plant Protection and Weed Management Section, 50 Truman Parkway, Annapolis, MD 21401 (e-mail: ) gaye.williams@maryland.gov