1. D. Žitňan, J. L. Hermesman, M. E. Adams, Department of Entomology and Agricultural Experiment Station, 5419 Boyce Hall, University of California, Riverside, CA 92521, USA.
2. T. G. Kingan, U.S. Department of Agriculture ARS Insect Neurobiology and Hormone Laboratory, BARC-East Building 306, Room 322, Beltsville, MD 20705, USA, and Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, MD 21228, USA.