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The antennae are indeed not Ptiolina-like, but the only alternative I could think of in Rhagionidae was Spania (smaller than Ptiolina) but that gave the same problem.
In the picture it is not visible there is a small apical stylus on the tip of the arista and that excludes Rhagionidae. Then remains only Ragas unica (Brachystomatidae, formerly Empididae). The shorter fork in R₄₊₅ miht have set me on the right track but those two specimens I received today are much more easy to work with. ;)