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Sochi region, beach of fast Mzimta river.
Near forest river I found P. quadripunctata(?) with large R4+5 appendix and dark spots on ta tp.
This Parydra with generaly slightly darkened wings and small appendix (not all specimens even).
Is it P. croactata or samething else?
Nikita

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dorsal (another specimen)

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Nikita - has this species got a large bristle on the outer face of the mid coxa? If it has no such bristle, then I'd say it was coarctata. If it has a bristle, then it's something else. P. coarctata normally has a well-developed apical tubercle on the scutellum. The appendix on vein R2+3 is a variable character. In some species it can be present or absent.

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At laest, Tony, I didn't find this bristle.

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In that case it's likely to be coarctata. Unfortunately I don't know all the Palaearctic species well enough to exclude others, but coarctata is known from the Black Sea area.

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I collect some more this flies.
I pined it the way that cx2 is clearly visible.
P. croactata.
Thank you Tony.