Black flies are semi-aquatic species and depend on flowing waters in their egg, larval and – as seen here – pupal stages. (IMAGE)

Goethe University Frankfurt

Black flies are semi-aquatic species and depend on flowing waters in their egg, larval and – as seen here – pupal stages.

Caption

Black flies are semi-aquatic species and depend on flowing waters in their egg, larval and – as seen here – pupal stages.

Credit

Dorian Dörge

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