* Contarinia anthobia (Löw, 1877)

Material: AK, Asker: Brønnøya, Sandbukta, 59.857474°N 10.529078°E ± 50m, 29 May 2019, on Crataegus monogyna, 4L, leg. HE, coll . NHMO; Oslo: Bogerud, 59.875899°N 10.841138°E ± 5m, 3 June 2020, on Crataegus rhipidophylla, 3L, leg. HE, coll. NHMO .

Biology: The white larvae live gregariously in the flower buds of Crataegus spp. ( Rosaceae), which are swollen and remain closed. Univoltine; hibernation in the soil.

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