Brimstone butterfly
Gonepteryx rhamni
Photograph by Leon Truscott
Brimstone butterfly (Gonepteryx rhamni)
Photograph by Leon Truscott
The Brimstone occurs in scrubby grassland, woodland (especially damp carr woodland), hedgerows, and open ground wherever its main foodplant, Alder Buckthorn (Frangula alnus) is found. The butterfly ranges widely and can often be seen flying along roadside verges and tracks with hedgerows, well away from its foodplant.