Description: Wingspan 24-26mm. A small, distinctive moth. The basal colour of the forewings is white with a light brown central band. The outer margins of all wings are suffused with black with a small faint line. Mid-June to early July.

Irish Distribution: Scarce and local, reported in recent times only from the Slieve Gullion area of south Armagh. Previously recorded from Armagh City back in the late 1960s. It has not been rediscovered from any of its former haunts at Tollymore Forest Park,Down, Knockagh Antrim, and the Enniskillen area, Fermanagh, where it was taken back in the mid 20th century. There may be other small isolated populations in the south Armagh area that have remained undetected due to the lack of fieldwork in this area for many years.

Ecology: A small pretty species associated mainly with upland heaths and limestone hills. Adults will often fly in afternoon sunshine as well as at dusk. The larvae can be found in July and August on Heath Bedstraw Galium saxatile. It overwinters as a pupa.

Key Identification Features:

• Brown wavy central band edged with white
• Small size
• Similar to the Argent & Sable which is larger and has more white on the wings

Distribution Map from NBN: Epirrhoe tristata at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Epirrhoe tristata at iNaturalist World Species Observations database.