Pyronia tithonus

The Gatekeeper, also known as the Hedge Brown, has gold wings on a brown background. The black eye spot on the upper wings has two characteristic white 'pupils' (the Meadow Brown and Small Heath only have one). This butterfly spends much of its time basking with wings open, when the sexes are easy to tell apart - only the male has the distinctive sex brands on the forewings (dark smudgy patches on the orange upperwings).

Courtesy of Naturepost - www.naturespot.org.uk