1. Department of Entomology, University of Illinois at Urbana-Champaign, 505 South Goodwin Avenue, Urbana, IL 61801, USA.
2. Neuroscience Program, University of Illinois at Urbana-Champaign, 505 South Goodwin Avenue, Urbana, IL 61801, USA.
3. Institute for Genomic Biology, University of Illinois at Urbana-Champaign, 1206 West Gregory Avenue, Urbana, IL 61801, USA.
4. Department of Biology and Neurosciences Institute, Stanford University, Stanford, CA 94305–5020, USA.
5. Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, 601 South Goodwin Avenue, Urbana, IL 61801, USA.