Brimstone (Gonepteryx rhamni)

The Brimstone is a resident butterfly; it has a wide range and has been expanding in recent years, especially in northern areas of England.

The upper side of the male Brimstone's wings are sulphur yellow; the females are a very pale green. Amongst foliage they are easily camouflaged due to the shape of their wings and the vein patterns resembling leaves.

The larvae feed on leaves of Buckthorn and Alder Buckthorn.

Brimstones may be found in hedgerows, grassland, woodlands, and open areas. They can often be seen flying along roadside verges where there are hedgerows.

Some people believe that the word 'butterfly' originated from the yellow colour of male Brimstones.