Season (Adult / Immature):
National Status: Local
Local Status: Uncommon and thinly distributed or restricted resident.
Local Record: Grade 2 See here for explanation
Flight time: One generation, Jul-Sep.
Foodplant: Yellow Iris, Great Fen-sedge.
|Year first recorded||1934||1991||1934|
|Year last recorded||2011||2006||2011|
|Number of records||103||38||282|
|Number of individuals||221||72||586|
For the region, we have a total of 282 records from 96 sites. Earliest record on file is in 1934.
For further information refer UK Moths.
Davey, P., 2009: A local marshland species in Britain, the larva feeding on the inner stems of yellow iris (Iris pseudacorus), greater fen-sedge (Cladium mariscus), pond-sedge (Carex spp.) and related plants. In Dorset, the moth is local and at low density, confined mainly to coastal fens at Radipole, Lodmoor, Poole Harbour and Christchurch Harbour, but also colonising fens inland plus several river systems where robust marsh plant species grow in profusion, for example at Maiden Newton. The following light trap records are from non-marshy areas and suggest short to medium-range dispersal on occasion: Iwerne Minster, on 24 July 1955 (H Moore), Woolland, on 8 July 1999 (P Benham), St Albans Head, on 11 August 1986 (P Davey). The following moths were trapped during notable immigrations, and a continental source is suspected in each case: Portland, on 10 August 1995, 4 August 2001, 3 August 2003, 7 August 2003 (M Cade), Durlston, on 15 July 2003 (J McGill).