Harmandiola populi (Rübsaamen, 1917)

Material: AK, Oslo: Gressholmen, 59.883657°N 10.719641°E ± 4m, 1 July 2020, on Populus tremula, L, leg. HE, coll. NHMO .

Biology: The orange larvae develop in leaf galls on Populus alba and P. tremula ( Salicaceae). The gall is up to about 4 mm across, thin walled, and situated mainly on the underside of the leaf. Univoltine; pupation and hibernation in the soil.

Distribution: Known from several European countries including Norway and Sweden. Kazakhstan and central Siberia.