Season (Adult / Immature):
National Status: Common
Local Status: Uncommon and fairly widespread resident.
Local Record: Grade 1 See here for explanation
Flight time: One generation, Jul-Oct.
|Year first recorded||1904||1953||1883||1883||1978|
|Year last recorded||2014||2014||2014||2014||2014|
|Number of records||346||449||510||781||113|
|Number of individuals||301||702||681||1607||166|
For the county, we have a total of 2199 records from 373 sites. First recorded in 1883.
Sutton & Beaumont, 1989: Widely distributed and sometimes locally common in an area for a few years. Many populations seem to either be transitory or subject to large variation in numbers.
2012 (CHF): In the Rothamsted data this species had declined by 98% between 1968 and 2002 making it the moth with the biggest drop in numbers. This seems to have been most marked in the south and numbers in Yorkshire were doing fairly well until 2009 when records dropped by a significant amount. This species may be prone to major fluctuations and it is interesting that Porritt regarded it as "generally scarce" in 1883 which he altered to "local but not uncommon" in 1907. Records are currently spread all across the county with the exception of the far west.