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Dear Dipterists.
Few years ago I made a small pond near my country home in Russia, Moscow ragion. Now this pond became old enought for long meditation and insect live watching, so I do.
Well, if i throw dead Culicidae in pond than in 8 out of 10 time some Diptera take its from water surface and fly out.
I kill a hell lot of time trying to make pic of that. The result in attachment.
In 25m from pond some Dipteras hunt the aphids on apple tree. They looks for my test very much like the pond surface hunters, image also attached.
Can you help my?
Nikita

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This certainly is a species of Hilara (dance flies, Empididae). I will not try to put a name on it. I am to unfamiliar with the more Eastern European fauna of that genus and the genus is very speciose.