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1. Jere and Paul, thank you very much, I never hoped that small Dolichopodidae may be identified till species by photo.
2. If the question about Stackelberg key in Bei-Bienko is to me, than the answer is no.
I just get only subvolum with Nematocera and ORTHORRHAPHA without half pages.
And as I deal with insecta only few month, this book in most cases is still too difficult for me.
Nikita