Season (Adult / Immature):
National Status: Local
Local Status: Scarce and restricted resident.
Local Record: Grade 2 See here for explanation
Flight time: Two generations, May-Jun, Jul-Aug.
Foodplant: Downy Birch, Silver Birch.
|Year first recorded||1935||1983||1935|
|Year last recorded||2011||2011||2011|
|Number of records||857||125||1964|
|Number of individuals||1591||231||3644|
For the region, we have a total of 1964 records from 240 sites. Earliest record on file is in 1935.
For further information refer UK Moths.
Davey, P., 2009: A widespread species in Britain, the larva feeding on birch (Betula spp.). In Dorset, the moth is common local amongst birch on sandy soil; typical localities include Arne Wood, Hurn and Holt Heath. It also occurs in woodland on chalky soil in the north-east of the county where birch is frequent, but here it is at a lower density. The dearth of records from west Dorset may be due to smaller numbers of birch trees in this region. The peak of the second brood is, on average, twice as large as that of the first brood.