* Planetella arenariae (Rübsaamen, 1899)

(Figure 25 A–B)

Material: VE, Faerder: Sandø, 59.08434°N 10.46712°E ± 50m, 13 August 2019, on Carex arenaria, 4L, leg. AF, BOLD: NHMO- ENT-548138, coll. NHMO .

Biology: The larvae develop in small eggshaped galls situated mostly underground on the root collar of Carex spp. ( Cyperaceae). The plant above the gall site becomes stunted. Usually bivoltine. Pupation and hibernation in the gall.

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