Status: Widespread but local in England and Wales (absent from the east Midlands), recent records from southern Scotland (older/other Scottish records may have been confused with P. flexuosa); possible old records from Ireland.
Habitat: Various, mainly (but not only) wet habitats.
Host plant: Water-cresses (Rorippa spp.), bitter-cresses (Cardamine spp.), garden radish (Raphanus sativus) and sometimes mignonettes (Reseda spp.)
Overwintering: As adults under bark
Food: Adults on leaves, larvae are leaf-miners