RS carried out all experiments and drafted the manuscript. BW and OB
participated in the conception of the project and the design of the
experiments, and they helped to write the manuscript. All authors
approved the final manuscript.
This work was supported by the Deutsche Forschungsgemeinschaft (Wa
463/9 to B.W. and O.B. and GRK 837 "Functional Insect Science" to B.W.).