Wingspan 10 to 13 mm. A colourful species with a very clearly defined pale crescent. There are similar species and care is needed with identification with microscopic examination usually required.
Inhabits meadows, rough pastures and hedgerows.
The adults fly from June to August, and like most other members of the genus, is on the wing in the late afternoon and early evening.
The larvae feed on the roots of Yarrow (Achillea millefolium) and Tansy (Tanacetum vulgare).
Fairly common over most of the British Isles. In the Butterfly Conservation's Microlepidoptera Report 2011 this species was classified as common.
It appears to be uncommon or under recorded in Leicestershire and Rutland, where there are few records. L&R Moth Group status = D (rare or rarely recorded).
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015