Mikiola fagi, the beech gall midge is a gall-causing fly in the family Cecidomyiidae.

[1] This species was first described by Theodor Hartig in 1839.

According to observations of the species aggregated on GBIF, this fly spreads across Europe.

[2] This article related to members of the fly superfamily Sciaroidea is a stub.

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