Lasioptera rubi (Schrank, 1803)

Material: TEY, Nome: Ulefoss, Klovdal, 59.236580°N 9.378267°E ± 150m, 17 June 2019, L, leg. SH, BOLD: NHMO-ENT-548105, coll. NHMO; AK, Oslo: Ellingsrud, Munkebekken, 59.929337°N 10.914516°E ± 10m, 24 March 2020, LI, leg. HE, coll. NHMO; Lillestrøm: Fetsund lenser, 59.921076°N 11.152532°E ± 15m, 13 April 2020, LI, leg. HE & TS, coll. NHMO; Branderud, Kongsrudveien 4, 59.983792°N 11.144773°E ± 5m, 15 May 2020, LMF, leg. TS, BOLD: NHMO-ENT-548228, coll. NHMO; Branderud, 59.974783°N 11.149692°E ± 10m, 27 December 2021, L, leg. TS, coll. NHMO .

Biology: The yellow to orange larvae develop gregariously in stem galls on Rubus spp. ( Rosaceae). Our records are all from R. idaeus . The galls form large, brown, usually one-sided lumps, usually on the lower part of the stem. They are lined with black mycelium on the inside. Univoltine; pupation and hibernation within the gall. The species is considered a horticultural pest of low impact (Trandem 2017).

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