Leaf-miner: CAT L – The leaf or a Photo required – 
– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Generally Common / Widespread 
– Leaf Miner
– difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.Confusion Species: < Parornix anglicella /Parornix scoticella >
ID pointers: All parornix species require particular care in identification. Adults are all similar to each other and are best determined by either gen-det or by rearing through the food plant. They all have a distinctive resting posture with the front part of the body raised on the forelegs, and a slightly up-curved rear.
Distribution: The species is nationally common in Britain and so it is likely to be common where the food plant is. More likely that the mine is discovered.
General Comment: None Mine Period Additional: The larvae feed on hazel (Corylus avellana), initially creating a squarish blotch on the underside, and then folding over the edge of the same, or a nearby leaf.
Mine ID Difficulty: Not Recorded
Mine Type/s: Not Recorded
Mine Feeding Method/s: Not Recorded
Mine Comment: None.
*** Last updated on 12 October 2025 by TD ***
Blue-coded] moths are not stored on the website at this current time. Selected Images: Buxton, Derbyshire – Steve Orridge © / Martin C.Harvey©
Image Gallery
Distribution Map for Parornix devoniella
Found 40 records
↳ 3 from After 2025
↳ 15 from 2020 - 2024
↳ 22 from Before 2020
↳ 3 from After 2025
↳ 15 from 2020 - 2024
↳ 22 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 – Parornix devoniella
⚠️ 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:
Parornix devoniella
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Parornix devoniella
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Parornix devoniella
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: Parornix devoniella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Parornix devoniella
AGR: 0% | Total % Change: 0%
CUSUM Analysis: Parornix devoniella
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 13 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 2025, reaching above average levels. The lowest population point occurred near 2024, 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: Parornix devoniella
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Parornix devoniella
Parornix devoniella
( 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
Parornix devoniella
Parornix devoniella
( 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 - Parornix devoniella – 40 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Markham Vale, Seymour | SK47L | 06/10/2025 | 1 | mine | vc57_irecords_extract |
| Sunnydale LNR | SK33G | 05/10/2025 | 1 | mine | vc57_irecords_extract |
| Shaw Farm, New Mills VC | SJ98Y | 12/08/2025 | 1 | mine | vc57_irecords_extract |
| Burton upon Trent | SK32P | 05/11/2024 | 1 | Mine | vc57_irecords_extract |
| Derbyshire, UK | SK15L | 20/10/2024 | 1 | Larva | vc57_irecords_extract |
| Lathkill Dale | SK16X | 16/10/2024 | 1 | mine | vc57_irecords_extract |
| Calke Abbey | SK32R | 16/10/2024 | 1 | mine | vc57_irecords_extract |
| Chee Dale | SK17G | 15/10/2024 | 1 | mine | vc57_irecords_extract |
| Monsall Head | SK17V | 14/10/2024 | 1 | mine | vc57_irecords_extract |
| Poppy Wood | SK32S | 22/11/2023 | 1 | Mine | vc57_irecords_extract |
| Calke Park | SK32R | 01/10/2023 | 1 | Mine | vc57_irecords_extract |
| Carver's Rocks | SK32G | 30/09/2023 | 1 | Mine | vc57_irecords_extract |
| Carver's Rocks | SK32H | 21/09/2023 | 1 | Mine | vc57_irecords_extract |
| Ladycroft Ave | SK07S | 19/07/2023 | 1 | adult | vc57_irecords_extract |
| Ladycroft Ave | SK07S | 06/07/2023 | 1 | adult | vc57_irecords_extract |
| Ladycroft Ave | SK07S | 02/07/2023 | 1 | adult | vc57_irecords_extract |
| Allestree Park | SK34K | 25/09/2022 | 1 | Mine | vc57_irecords_extract |
| North Lees Estate, Hathersage | SK28G | 21/08/2021 | 1 | mine (empty) | vc57_irecords_extract |
| Grange Wood | SK21S | 13/09/2018 | 1 | Mine | vc57_irecords_extract |
| Thorpe, Ashbourne DE, UK | SK15K | 13/10/2010 | 1 | Larva | vc57_irecords_extract |
| Thorpe, Dovedale | SK15K | 13/10/2010 | 1 | Larval Mine | vc57_danes_bc_data |
| Ashford in the Water | SK16Z | 22/09/2010 | 1 | Larval Mine | vc57_danes_bc_data |
| Bamford | SK28B | 21/09/2010 | 1 | Larval Mine | vc57_danes_bc_data |
| Ladybower Resr | SK18U | 03/09/2010 | 1 | Larval Mine | vc57_danes_bc_data |
| Rose Av,Clowne | SK57D | 21/05/2010 | 1 | Adult | vc57_danes_bc_data |
| Hopton Wood NR, Cromford | SK25T | 16/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Cromford | SK25Y | 16/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Linacre | SK37L | 13/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Coombs Dale,Stoney Middleton | SK27H | 12/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Coombs Dale,Stoney Middleton | SK27H | 12/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Hope | SK18R | 07/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Foremark Resr (sailing club area), Ticknall | SK32H | 02/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Tissington Trail, Ashbourne | SK14T | 01/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Calke Park | SK32L | 25/10/2008 | 1 | Mine | vc57_irecords_extract |
| Calke Park,Ticknall | SK32R | 25/10/2008 | 1 | Larval Mine | vc57_danes_bc_data |
| Lathkill Dale,Bakewell | SK16Y | 19/09/2008 | 1 | Larval Mine | vc57_danes_bc_data |
| Carr Vale NR,Bolsover | SK47K | 13/09/2006 | 1 | Larval Mine | vc57_danes_bc_data |
| Foremark Resr, Ticknall | SK32H | 09/07/2005 | 1 | Adult | vc57_danes_bc_data |
| Hillclifflane, nr Idridgehay | SK24Y | 02/11/2002 | 1 | Larval Mine | vc57_danes_bc_data |
| Abbotsholme School, Rocester | SK13E | 04/10/2001 | 1 | Larval Mine | vc57_danes_bc_data |