Feel free to contact me if it seems to you that the literature on identification listed here is too voluminous or too complicated. Single or few specimens are no problem at all. If you have larger numbers we may talk about conditions. Auchenorrhyncha are also a perfect group for studying a variety of ecological questions (e.g. efficiency controls, monitoring, evaluation of sites, completeness of phytophage guilds). I can identify your western Palearctic material, including nymphs. Just ask me. If further animal groups are involved, you may be interested in getting contact with BioNetworX - Network of Classical Biologists