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Hello,

I'm working on identifying Syrphids from Finnland, and I am having particular issues identifying Cheilosia and Sphaerophoria with the keys I am using (HOVERFLIES OF NORTHWEST EUROPE, VanVeen 2010 and Tvåvingar: Blomflugor | Diptera: Syrphidae: Syrphinae, Bartsch 2009). I will only get so far through and then end up with 2-3 possible species, none of which completely agree with what features i am seeing on the fly.

Does anyone have any advice on keys that may be more specific for Nordic / Finnish hoverflies, or anything that may mention the specific different features hoverflies in this very northern area may have?

I would be very grateful! Thank you