1. Department of Entomology; University of Illinois at Urbana-Champaign; 320 Morrill Hall, 505 S. Goodwin Avenue Urbana IL 61801
2. Illinois Natural History Survey; Prairie Research Institute; University of Illinois at Urbana-Champaign; 1816 S Oak Street Champaign IL 61820 USA
3. INRA-UMR 1062 CBGP (INRA, IRD, CIRAD, Montpellier SupAgro); Centre de Biologie pour la Gestion des Populations; Campus International de Baillarguet CS 30 016 F-34 988 Montferrier-sur-Lez France