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Mosc. reg, 07 may, 4-4,5mm, in grass.
It is myfirst attempt to deal with Scathophagidae key.
My result - Amaurosoma flavipes.
Correct?

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In current nomenclature that would be Nanna flavipes and I think that is possible. Need to check, though, because maybe it could be N. inermis, as well.

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Thank you Paul. I found Amaurosoma on Kahis'S site http://www.astro.helsinki.fi/~kahanpaa/diptera/list/online/node92.html and decided that I can stop nomenclature chsking.
In may key f1 yellow or with black line on dorsal part of f1. I decided that only black line is the case. If so - N. flavipes. N. inermis - f1 completely or mostly black.
Nikita
P.S. Spend a hell lot of time searching your Brachyopa elsewhere, but not in Syrphidae family

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It seems that Nanna/Amaurosoma is a matter of opinion; I'm not quite sure which specialist to believe in this case. Sifner (2003) uses Amaurosoma and details why he think it is the valid name.

Sifner (2003), The family Scathophagidae (Diptera) of the Chech and Slovak Rebublics (with notes on selected Palaearctic taxa), Acta Mus. Nat. Pragae, Series B, Nat. Hist. 59(1-2):1-90 - an excellent paper, but suffering from unacceptably poor english (including some sections that simply make no sense at all)

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Thank you Kahis.
My choise - Amaurosoma (sounds better), but unfortunely I already printed labels with Nanna. Let it be so till experts's final decision.
Nikita

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As usualy, collected by Black.
Another species I think.
Legs - all yellow, pleuras partly shining - N./A. brevifrons?

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Noted Nikita's comment "Spend a hell lot of time searching your Brachyopa elsewhere, but not in Syrphidae family" In collections Brachyopa are often amongst undetermined Muscidae/Anthomyiidae. Perhaps not surprisingly They don't look like Syrphidae.
Sunny in Ireland today Robert Nice photo Nikita

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Hi Robert. During long time you didn't appear at forum. Glad to hear you back!
Nikita