Description: Wingspan 32-40mm. Throughout November.

World Distribution: Northern and Central Europe to eastern Russia.

Irish Distribution: Scarce; confirmed with certainty in Northern Ireland for the first time in 1998 at Monmurray Bog, Fermanagh. Since its discovery there have been other Fermanagh records from White Park Bog and Tattinamona near Brookeborough. In 2001 large numbers of adults were seen at Rehaghy Mountain, Tyrone. It was formerly recorded from Favour Royal near Aughnacloy, Tyrone in the last century although these early records were regarded by many as dubious. Old records from Down have also been regarded by many as doubtful. This should be reconsidered in the light of its discovery in Fermanagh and Tyrone.

Ecology: This moth is associated with bogs and heaths where birch Betula spp flourish. Adults have been observed by torchlight in large numbers after dark at one site sitting on the finer branches and trunks of birch trees. The larvae can be found from April to June on birch Betula spp. and apple Malus spp.

Key Identification Features:

• Larger
• Has glossy sheen to wings
• Shorter flight period
• Wingless females

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

iNaturalist: Operophtera fagata at iNaturalist World Species Observations database.