About Mikiola fagi (Hartig, 1839)
Mikiola fagi, commonly known as the beech gall midge, is a species of fly that induces the formation of galls. It belongs to the family Cecidomyiidae. This species was first formally described by Theodor Hartig in 1839. Based on species observation data aggregated on GBIF, the distribution of this fly covers Europe.