Season (Adult / Immature):
National Status: Common
Local Status: Uncommon and fairly widespread resident.
Local Record: Grade 1 See here for explanation
Flight time: Two generations, May-Jun, Jul-Aug.
Foodplant: Birch and Alder.
|Year first recorded||1940||1883||1883||1883||1880|
|Year last recorded||2014||2014||2014||2014||2014|
|Number of records||547||559||577||904||181|
|Number of individuals||373||585||707||1336||235|
For the county, we have a total of 2768 records from 575 sites. First recorded in 1880.
Sutton & Beaumont, 1989: Widespread as larvae on sallow, birch and alder, and frequent at light in suitable areas of vice-counties 62-64. Very local in east VC61 where there is little suitable habitat and there is only a single record from Harmby in VC65 (FBS). However it has been recorded in Upper Teesdale, VC66 (Dunn & Parrack, 1986).
2012 (CHF): Common and widespread across most of the county in two overlapping broods. Commonest in broadleaved woodland but also coming into gardens.