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Hello all together,

I don´t know if it is possible to identify the following fly´s - but I think I try it. Maybe here are some experts who know the species name.

I found them in South Germany, Baden-Württemberg, city of Waldshut, between Waldshut and Schmitzingen on Semi-arid grassland. 480 meters above the sea.
Date: 16.04.2011, pictures by myselfe.