* Contarinia tremulae Kieffer, 1909

Material: TEI, Seljord: Blika, 59.591396°N 8.561577°E ± 100m, 18 June 2019, 6L, leg. HE, coll. NHMO .

Biology: The white larvae develop gregariously in leaf rolls on Populus tremula ( Salicaceae). The leaf margin on one or both sides of the leaf is rolled upwards and is glabrous and somewhat irregular. Univoltine; pupation and hibernation in the soil.

Distribution: Known from a few European countries including Norway and Sweden.