* Wachtliella persicariae (Linnaeus, 1767)

(Figure 51)

Material: VE, Larvik: Fuglevikstranda, 58.98032°N 10.01810°E ± 50m, 9 August 2019, LP, leg. AF, BOLD: NHMO-ENT-548134, coll. NHMO; Stavern, Rakke, 58.980284°N 10.017766°E ± 50m, 24 July 2021, LPMF, leg. HE, coll. NHMO .

Biology: The white to orange larvae develop in galled leaves of Bistorta spp. and Persicaria spp. ( Polygonaceae), rarely also on other members of the family. Our records are from P. amphibia . The infected leaves are rolled downwards and often strongly twisted and miscolored red. Multivoltine; pupation in the gall in a white cocoon.

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