Season (Adult / Immature):
National Status: Common
Local Status: Common and thinly distributed or restricted resident.
Local Record: Grade 2 See here for explanation
Flight time: May-Jun
|Year first recorded||1904||1859||1883||1883||1883|
|Year last recorded||2014||2014||2013||2014||2014|
|Number of records||32||27||22||63||13|
|Number of individuals||492||615||16||309||67|
For the county, we have a total of 157 records from 96 sites. First recorded in 1859.
For further information refer UK Moths.
Sutton & Beaumont, 1989: Recorded from all five vice-counties, and is locally common to abundant.
2012 (CHF): This species can be difficult to separate from females of Micropterix aruncella but calthella has the base of the forewing entirely purple whereas aruncella has purple only on the costa. M. calthella can often be found in good numbers especially on Caltha and Ranunculus flowers.