1. Department of Biochemistry; Max Planck Institute for Chemical Ecology; Hans Knöll Straβe, 07745 Jena Germany
2. Insect Symbiosis Research Group; Max Planck Institute for Chemical Ecology; Hans Knöll Straβe, 07745 Jena Germany
3. Department of Organic Chemistry; KTH (Royal Institute of Technology); AlbaNova University Center, 106 91 Stockholm Sweden
4. Department of Ecology; Swedish University of Agricultural Sciences; Lägerhyddsvägen 1, 751 21 Uppsala Sweden