Season (Adult / Immature):
National Status: Local
Local Status: Rare and very local resident.
Local Record: Grade 4 See here for explanation
Flight time: One generation, May-Jul.
Foodplant: Alder and birches.
|Year first recorded||1964||1964|
|Year last recorded||2010||2010|
|Number of records||10||20|
|Number of individuals||18||36|
For the region, we have a total of 20 records from 18 sites. Earliest record on file is in 1964.
Davey, P., 2009: A local single-brooded species restricted to southern Britain, the larva feeding on birch (Betulae spp.) and alder (Alnus glutinosa). In Dorset, colonies of the moth have been found in four sites to date: Chedington Woods, Hooke Park, Melbury Park and Yellowham Wood. Each of these sites contains damp areas hosting groves of old alder trees within woodland. There have several records relating to presumed dispersive moths: West Bexington, on 12 June 2006, Iwerne Minster, on 27 May 1964.