1. (DRS) Systematic Entomology Laboratory, Agricultural Research Service, U. S. Department of Agriculture, c/o National Museum of Natural History, Smithsonian Institution, P.O. Box 37012, MRC 168, Washington, DC, 20013-7012 (e-mail: sawfly2@aol.com)
2. (GFT) Via Cristoforo Colombo, 8, I-95030, Pedara, Catania, Italy (e-mail: giuseppefabrizioturrisi@gmail.com)