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SignallingFlies_200

Observed: 29th June 2013 By: TacheTache’s reputation in InvertebratesTache’s reputation in InvertebratesTache’s reputation in Invertebrates
SignallingFlies_200
Description:

I often see these flies in groups in the river margin. They spend a lot of time flicking their wings at each other, making the white marks flash.

Identifications
Species interactions

No interactions present.