Leaf-miner: CAT L – The leaf or a Photo required – 
– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Uncertain/Unknown – Insufficient Data 
– Leaf Miner
– difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.Confusion Species: Ectoedemia intimella, Stigmella catharticella
ID pointers: Very coarsely-scaled appearance a creamy blotch at about two thirds on the costa, creamy cilia and an orange tufty head
Distribution: (Last record: 4 October 2025 at Longdendale ) – Uncertain due to insufficient data; 1985 Hopton Wood Quarry on St.John’s Wort
Also Leaf Mine records from Buxton 2024; Gamesley 2024, Markham Vale 2025. Leaf Mine from Longdendale Oct 2025.
*** Last updated on 5 October 2025 by TD ***
Last Recorded Year: 2025
Last Recorded By – Christian Heintzen
Last Recorded General Area – Longdendale
Selected Images:
Buxton – Jon Mortin©/ Markham Vale (July 2025) Mark Radford© / Longdendale (September 2025) Christian Heintzen©
Image Gallery
No gallery images found for this moth.
Distribution Map for Fomoria septembrella
Found 17 records
↳ 0 from After 2025
↳ 5 from 2020 - 2024
↳ 12 from Before 2020
↳ 0 from After 2025
↳ 5 from 2020 - 2024
↳ 12 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.
NBN Atlas UK Distribution for – Fomoria septembrella
⚠️ Please wait for the map to load fully – do not click the link shown.
Note – the NBN Atlas datasets are listed in the map below and vary in their currency (uptodateness) – however,
the map does give a general indication of the moth's distribution across the UK.
Monthly Records By Year:
Fomoria septembrella
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Fomoria septembrella
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Fomoria septembrella
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: Fomoria septembrella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Fomoria septembrella
AGR: 0% | Total % Change: 0%
CUSUM Analysis: Fomoria septembrella
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 19 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 8 (August) 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 2000, reaching above average levels. The lowest population point occurred near 2000, 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: Fomoria septembrella
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Fomoria septembrella
Fomoria septembrella
( 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
Fomoria septembrella
Fomoria septembrella
( 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 - Fomoria septembrella – 17 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Lower Gamesley VC | SK09C | 31/08/2024 | 1 | mine (tenant | vc57_irecords_extract |
| Deep Dale, Topley Pike | SK17B | 31/08/2024 | 1 | Adult | vc57_irecords_extract |
| Goyts Lane Pond | SK07H | 24/07/2024 | 1 | mine | vc57_irecords_extract |
| Coombs Dale, Stoney Middleton | SK27H | 21/07/2024 | 1 | Adult | vc57_irecords_extract |
| Coombs Dale, Stoney Middleton | SK27H | 21/07/2024 | 1 | Larva | vc57_irecords_extract |
| Millers Dale | SK17G | 03/09/2011 | 1 | Larval Mine | vc57_danes_bc_data |
| Bamford | SK28B | 21/09/2010 | 1 | Larval Mine | vc57_danes_bc_data |
| Ashford in the Water | SK16Z | 22/09/2010 | 1 | Larval Mine | vc57_danes_bc_data |
| Hopton Wood Quarry NR | SK25T | 16/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Tissington Trail, Ashbourne | SK14T | 01/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Coombs Dale,Stoney Middleton | SK27H | 12/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Pin Dale | SK18L | 10/09/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Monks Dale, Buxton | SK17G | 14/09/2008 | 1 | Larval Mine | vc57_danes_bc_data |
| Lathkill Dale,Bakewell | SK16Y | 19/09/2008 | 1 | Larval Mine | vc57_danes_bc_data |
| Cubley, nr Ashbourne | SK13T | 04/10/2001 | 1 | Larval Mine | vc57_danes_bc_data |
| Broomfield Hall, Morley, Derby | SK34V | 04/11/2000 | 1 | Larval Mine | vc57_danes_bc_data |
| Broomfield Hall, Morley, Derby | SK34V | 02/11/1996 | 1 | Larval Mine | vc57_danes_bc_data |