Large Ranunculus Polymixis flavicincta
([Denis & Schiffermüller], 1775)
Wingspan 40-50 mm.
A variable species, with the brightest individuals occurring in the south-east. Distributed mainly in southern England, it occurs in scattered locations northwards to parts of northern England, but with an eastern bias.
It is to be found in suburban habitats, wasteground and coastal cliffs, and flies in September and October, when it visits light.
A range of herbaceous plants are used by the larvae, including ragwort (Senecio jacobaea) and red valerian (Centranthus ruber). It can be a pest on garden plants.