Leaf-miner: CAT L – The leaf or a Photo required – 
Larval Case: C1 – Distinctive Species – 
– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Generally Common / Widespread 
– Leaf Miner
– care required in the identification process, as confusion with similar species is likely – quality photographs required. Confusion Species: other Cnephasia
ID pointers: The ID of Graham’s specimen was determined by Gen.Det but no prep photos were taken. Variable in markings, this particular one shows overall brown forewings covered in spots and blotches. Can show variegated cross-bands over a paler brown background. A Gen Det prep photo by the late Claire Miles is of one taken on 7th June 2022.
Distribution: A reasonably common species found in gardens, farmland and other open spaces, but due to the difficulty of identification, records remain low. Can be confused with other Cnephasia. If uncertain please record as Cnephasia agg
*** Last updated on 26 October 2025 by TD ***
Blue-coded] moths are not stored on the website at this current time. Selected Images: Grange Wood, Derbyshire – Graham Finch©
Image Gallery
No gallery images found for this moth.
Distribution Map for Cnephasia asseclana
Found 19 records
↳ 2 from After 2025
↳ 2 from 2020 - 2024
↳ 15 from Before 2020
↳ 2 from After 2025
↳ 2 from 2020 - 2024
↳ 15 from Before 2020
If the Map Layers function fails, just refresh the page and it should be OK after. Use the +- zoom on the top left, or on a tablet, use two fingers to zoom. Remember, the last layer you ticked is the one which displays the popup information - they sit on top of each other - de-select then re-select, to see the popup values.
Bedrock Geology ** indirectly affects moth distribution by influencing the type of habitat and food plants available in an area. In turn, this may affect the types of moths that can thrive, or where they can most likely be found.
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NBN Atlas UK Distribution - This moth may be an aggregate and as such no specific records of distribution exist.
Monthly Records By Year:
Cnephasia asseclana
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Cnephasia asseclana
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Cnephasia asseclana
Adult-only & Anything [Larvae, Pupae, Adult, Mines]
Shading shows moth presence between dates
Click the colour discs below to Select/De-select as Required
Recordings By Year: Cnephasia asseclana
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Cnephasia asseclana
AGR: 0% | Total % Change: 0%
CUSUM Analysis: Cnephasia asseclana
About this chart: CUSUM (Cumulative Sum) charts track long-term trends in moth populations [ filtered by 'Adult' and 'Mine' life stages ] by showing whether each year’s counts are above or below the historical average. Even small shifts build up over time, making trends of growth, stability, or decline easier to see. CUSUM highlights trend-consistency — asking: “Across the years, have moth counts mostly stayed above or below average?”
The data sample has 15 gap year/s here (zero records) between 2000 and 2025. The moth may have been present in those gap years, but no data was available. Too many year-gaps may exaggerate or skew the chart.
Counts for the current year (2025) are pro-rated based on data available up to month 9 (September) to provide a full-year equivalent.
ⓘ
Purple line rises = years better than average; falls = years worse than average.
Peak (best year)
Trough (worst year)
Growth periods
Decline periods
Population peaked around 2007, reaching above average levels. The lowest population point occurred near 2004, showing a significant decline.
What the Y-axis "Cumulative Deviation" means: Cumulative Deviation shows the running total of how each year’s moth population count differs from the long-term average. i
Hectad (10kmx10km) Coverage: Cnephasia asseclana
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Cnephasia asseclana
Cnephasia asseclana
( data includes Adult Stage only )
Flight Period chart – the grey hatched area above, which can cross one or more months, pictorially represents the best guess we have for this moth's flight periods [month/s]. The coloured lines represent the actual months seen in flight, from site observation records received between 2020-2025.
Mine Periods – Indicative –vs– Recorded Data
Cnephasia asseclana
Cnephasia asseclana
( data includes both Larvae and Adult Stages )
Mine Period chart – the grey hatched area above, which can cross one or more months, pictorially represents the best guess we have for this moth's mine periods [month/s]. The coloured lines represent the actual months seen mining, from site observation records received between 2020-2025.
Records Behind the Map and Charts - Cnephasia asseclana – 19 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Shaw Farm, New Mills VC | SJ98Y | 12/08/2025 | 1 | adult | vc57_irecords_extract |
| Ingleby Ave, Derby | SK33L | 20/06/2025 | 1 | adult | vc57_irecords_extract |
| Hathersage, Derbyshire, UK | SK28F | 07/06/2022 | 1 | adult | vc57_irecords_extract |
| Grange Wood, Overseal | SK21S | 02/07/2021 | 1 | adult | vc57_irecords_extract |
| Midway Rd,Midway,Swadlincote | SK32A | 13/07/2013 | 1 | Adult | vc57_danes_bc_data |
| Rosliston (National Forest Centre), Swadlincote | SK21N | 20/07/2012 | 6 | Adult | vc57_danes_bc_data |
| Bamford St,Ripley | SK34Z | 15/07/2012 | 1 | Adult | vc57_danes_bc_data |
| Bamford St,Ripley | SK34Z | 19/06/2012 | 1 | Adult | vc57_danes_bc_data |
| Bamford St,Ripley | SK34Z | 17/06/2012 | 1 | Adult | vc57_danes_bc_data |
| Denefields,Matlock | SK36A | 22/07/2010 | 1 | Adult | vc57_danes_bc_data |
| Newboundmill Lane,Pleasley | SK56C | 13/06/2009 | 1 | Adult | vc57_danes_bc_data |
| Drakelow NR (car park),Burton on Trent | SK22F | 12/07/2008 | 1 | Adult | vc57_danes_bc_data |
| Drakelow NR (car park),Burton on Trent | SK22F | 28/06/2008 | 1 | Adult | vc57_danes_bc_data |
| Carvers Rocks,Hartshorne,Swadlincote (old toilet block area) | SK32G | 11/08/2007 | 6 | Adult | vc57_danes_bc_data |
| Main St,Kings Newton,Melbourne | SK32Y | 13/07/2005 | 1 | Adult | vc57_danes_bc_data |
| Foremark Resr, Ticknall | SK32H | 09/07/2005 | 6 | Adult | vc57_danes_bc_data |
| Shipley Park (Cinder Hill), Shipley, Ilkeston | SK44H | 02/07/2005 | 1 | Adult | vc57_danes_bc_data |
| Edgecote Drive,Newhall,Swadlincote | SK22V | 03/07/2004 | 1 | Adult | vc57_danes_bc_data |
| Dowey Lumb NR, Dronfield | SK38Q | 25/07/1997 | 1 | Adult | vc57_danes_bc_data |