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On may 28 I photographed this Otites fiy near Durbuy in Belgium. TIt has party red femora. Does this mean it is Otites porcus? Or does Osites ruficeps have the same partly red femora?

Thanks!

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From Korneyev :
Diagnosis: This species is similar to O. porcus in having microtrichose areas on abdominal tergites 3 and 4 laterally reaching tergite margins, but clearly differs from it by having occiput, femora and tibiae entirely black (widely orange-yellow in O. porcus). It also clearly differs from O. ornata by the microtrichose areas on abdominal tergites 3 and 4 laterally reaching tergite margins, and medial and lateral surstyli of male robust and widely fused (see Kameneva, 1997 (as “O. formosa”) (in O. ornata, microtrichose areas on abdominal tergites 3 and 4 short, not reaching lateral margins, surstyli narrow and separated) !
So NO, it’s not O. ruficeps !