Gonepteryx rhamni - Common Brimstone Butterfly

Image of Aglais io Butterfly

Formal Name: Gonepteryx rhamni

Informal Name: Common Brimstone

Conservation Status: No threat to conservation and numbers have been on the rise

Location: Europe and Asia

Average Wingspan (cm): 6.7

Seen Between: May - July

Description: Gonepteryx rhamni are informally known as Common Brimstone. It has an average wingspan of 6.7cm.

Their wings are varying shades of yellow, green and white. They have a small orange/ brown spot on each wing.

They can be seen between the months of June and September. Unlike other butterflies, the Common Brimstone doesn't have a specific habitat. They are found in woodland, hedgerows, chalk downland, parks, gardens, along the coast, essentially wherever their food source is growing. As caterpillars, they feed on Alder Buckthorn and Common Buckthorn. In their butterfly form, they feed on a variety of plants such as Thistles, Bluebells, Dandelions, Primrose and Wild Teasel.

Predators of the Common Brimstone include wasps and birds. They use their wings to camouflage as when they're closed, the ventral side looks like the leaves in their surroundings. Its conservation status is classed as least concern/ low, with no apparent threat.