1. USDA-ARS Beneficial Insect Introduction Research Unit, 501 South Chapel Street, Newark, Delaware 19713, USA; E-mail: (J. J. D.), ans6573@psu.edu (A. S.)
2. University of Delaware, Department of Entomology and Wildlife Ecology, Newark, 531 South College Avenue, Newark, Delaware 19716, USA; E-mail: (D. T.)