HarmandiolaHarmandiola is a genus of flies belonging to the family Cecidomyiidae. The 14 described species are found in the Holarctic region. They induce galls on species of poplar, chestnut, and hickory trees.SpeciesHarmandiola amisae Harmandiola castaneae Harmandiola cavernosa Harmandiola globuli Harmandiola helena Harmandiola hudsoni Harmandiola nucicola Harmandiola polymorpha Harmandiola populea Harmandiola populi Harmandiola pustulans Harmandiola reginae Harmandiola stebbinsae ''Harmandiola tremulae''