Immigrant from southern Europe, appearing mainly in southern Britain, with occasional records north to the Orkneys, in some years arriving in sufficient numbers to breed. In Hampshire and on the Isle of Wight a common immigrant, which is widely distributed throughout in some years. Wingspan 18-21 mm. Highly sexually dimorphic. Larva feeds on the leaves of various herbaceous plants, although the exact plant species utilised in the United Kingdom is unknown, but unable to over-winter in significant numbers.