Dasineura fraxinea Kieffer, 1907

Material: AK, Asker: Konglungen, Spirebukta, 59.832968°N 10.495180°E ± 5m, 3 June 2022, L, leg. HE, coll. NHMO; Baerum: Borøya, 59.878060°N 10.559628°E ± 5m, 7 June 2021, L, leg. HE, coll. NHMO; Oslo: Gressholmen, 59.882863°N 10.717849°E ± 5m, 1 July 2020, L, leg. HE, coll. NHMO; Bleikøya, 59.889358°N 10.739685°E ± 300m, 3 July 2020, L, leg. TS & HE, BOLD: NHMO-ENT-548060, coll. NHMO .

Biology: The white larvae develop in parenchymal galls on the leaves of Fraxinus spp. ( Oleaceae). Our records are all from F. excelsior . Each larva lives in a roundish gall evident by a small bulge on the upper side of the leaf. The gall is hardly miscolored while occupied but turns brown after the larva has left it. Univoltine; pupation and hibernation in the soil.

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