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We can't see is vein R1 setose or not.
But I think that jizz completely against Neuroctena (N. has body shining reddish-yellow/yellowish-red).
Dryomyza has greyish-ye3llow, dusted body exactly as this fly.
The only Dryomyza recorded for Spain is D.flaveola.
I think Dryomyza flaveola it is.
Nikita