Season (Adult / Immature):
National Status: Nb
Local Status: Scarce and mainly coastal resident and local wanderer.
Local Record: Grade 3 See here for explanation
Flight time: -
|Year first recorded||1905||1988||1905|
|Year last recorded||2011||2011||2011|
|Number of records||1600||39||3278|
|Number of individuals||4314||46||8720|
For the region, we have a total of 3278 records from 262 sites. Earliest record on file is in 1905.
For further information refer UK Moths.
Davey, P., 2009: A local species confined to the south coast of England, the larva feeding nocturnally on various soft-bladed grass species. In Dorset, the moth "was an occasional immigrant to the Purbeck coast, but in the 1930s it became more common and is now well established from Portland to Studland, but for how long remains to be seen." (W Parkinson Curtis ms). The moth continues to be found along the Purbeck coast and on Portland where it is usually common. It is also frequent along the west Dorset coast and also along the Purbeck Ridge, but it is at low density further east at Studland and on Hengistbury Head. In addition, over the past ten years records have increased from traps run inland on the chalk belt, for example, Chilfrome, Puddletown and Shapwick. It is likely that the warming trend has caused the range of this moth to expand northwards from the coastal belt onto unimproved chalky grassland habitat inland. The second brood is six times more frequent than the first, on average. No recommendations are proposed given that the species is well established in its coastal grassland habitat and its evident expansion elsewhere.