* Contarinia fagi Rübsaamen, 1921

Material: AK, Oslo: Blindern, 59.939755°N 10.718249°E ± 10m, 27 August 2019, LI, leg. HE, BOLD: NHMO-ENT-548208, coll. NHMO; 59.938950°N 10.720803°E ± 40m, 15 August 2022, LI, leg. HE, coll. NHMO; Sagene, Nordre gravlund, 59.936448°N 10.745104°E ± 80m, 15 August 2022, LI, leg. HE, coll. NHMO; Tøyen, Botanical Garden, 59.9194722°N 10.7705556°E ± 20m, 19 June 2019, L, leg. SH, BOLD: NHMO- ENT-548113, coll. NHMO.

Biology and notes: The yellowish white larvae develop in the opening leaf buds of Fagus sylvatica ( Fagaceae), causing the young leaves to become crumpled and disfigured. Multivoltine; pupation and hibernation in the soil. In late summer, the species will often attack the fresh shoots on recently trimmed beech hedges.

Distribution: Widespread in Europe including Norway, Sweden and Denmark.