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I?ve got a lot of Eristalis hoverflies here, 40 km NW of Stockholm, Sweden. And of course I?ve a lot of photos of them.

Is it possible to determine the spieces on my photos? If it is, can you tell me how?

I have numbered the different flies, to make the investigation easier, but there may be the same spieces whith different number, or vice versa.

http://www.odla.n...a&aid=5208