Season (Adult / Immature):
National Status: Migrant
Local Status: Scarce and local migrant.
Local Record: Grade 3 See here for explanation
Flight time: Arrive May-Nov.
|Year first recorded||1935||1987||1935|
|Year last recorded||2011||2011||2011|
|Number of records||498||25||1046|
|Number of individuals||718||31||1498|
For the region, we have a total of 1046 records from 162 sites. Earliest record on file is in 1935.
For further information refer UK Moths.
Davey, P., 2009: A strongly migratory species with a global distribution (apart from Australasia) occurring annually across southern districts of England, the larval foodplant is unknown. Like the Vestal, this species does not seem to be able to survive the UK winter in any stage. The markings and light brown colouration of the adult male are in stark contrast to the much darker, purple-hued, female. In Dorset, the moth has been recorded in sixteen of the past twenty years. In favourable seasons, immigrants spawn up to two resident broods, and these are undoubtedly supplemented by further influxes from abroad whenever suitable weather conditions arise. Brood peaks double or treble in size with time. The moth has been recorded in twenty-four of the past twenty-seven years.
Two moths were trapped at light within an alder swamp at St Leonard's Peats on 6 July 1998 (P Davey), in a year when relatively large numbers of Gems were recorded. The locality contains much common marsh-bedstraw (Galium palustre) and fen bedstraw (Galium uliginosum), host plants for many 'Carpets'. There was no opportunity for immigration at the time of capture.