Tony Irwin wrote:
You are so fortunate in Sweden - you have 18 species of Eristalis. In Britain, we only have 9. :(
If you go to the Fauna Europaea site (http://www.faunae...ecies_list) and list species in [select genus], type in "Eristalis" then select country "Sweden", then press "display species" you should get a list of all the Swedish species.