Acleris ferrugana       Acleris notana
49.083X  –  Tortricidae –  Tortricinae – Acleris ferrugana/notana – Tawny Birch/Tawny Oak Tortrix agg PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Blue –  Generally Common / Widespread   
Taxonomy:   Micro   >>  Tortricidae  >> Tortricinae
** This page is to record aggregated records only – see individual species pages for additional information. **
ID Difficulty:  Red – difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.
Confusion Species: Acleris ferrugana Tawny Oak Tortrix; Acleris notana Tawny Birch Tortrix
ID pointers: A. ferrugana and A. notana can only be reliably separated by Gen Det examination. Undetermined specimens should be recorded as this aggregate.
Distribution:  Both these Acleris species are widespread across the recording area – For full details please see separate species pages
General Comment: None Flight Period: July /  September /  October –  The second generation over winters, reappearing in the following spring Moth Activity: Nocturnal   – and is attracted to light Photographed: No –  Photographed By: Not Recorded
*** Last updated on 2 October 2025 by RP ***
Wingspan: 14-19mm
 Food Plant: Birch and Oak
Recorded dates for Common [Blue code Blue-coded] moths are not stored on the website at this current time.
Selected Images:  


Image Gallery

No gallery images found for this moth.


Distribution Map for Acleris ferrugana/notana

Found 38 records
    ↳ 13 from After 2025
    ↳ 15 from 2020 - 2024
    ↳ 10 from Before 2020
Flying
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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 - No LSID found for: Acleris ferrugana/notana
This moth may be an aggregate and as such no specific records of distribution exist.


Monthly Records By Year: Acleris ferrugana/notana
( data includes both Larvae and Adult Stages )

Monthly Counts By Year: Acleris ferrugana/notana
( data is based on 'Adult' stage records only. )


First/Last Recorded Dates: Acleris ferrugana/notana
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: Acleris ferrugana/notana
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Acleris ferrugana/notana
AGR: 1.23%   |   Total % Change: 30.8%


CUSUM Analysis: Acleris ferrugana/notana
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 18 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 2004, reaching above average levels. The lowest population point occurred near 2023, 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: Acleris ferrugana/notana
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Acleris ferrugana/notana
( 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.

Records Behind the Map and Charts - Acleris ferrugana/notana – 38 records available

Listed by Year - descending - scroll across to see all table columns

Site NameTetradDateCountStageSource
Ladycroft Ave, BuxtonSK07S21/07/20251adultvc57_irecords_extract
Darwin ForestSK26X06/07/20251adultvc57_irecords_extract
Darwin ForestSK26X04/07/20251adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G20/06/20251adultvc57_irecords_extract
Midway, Derbys.SK32A19/06/20252adultvc57_irecords_extract
Markham Vale DerbyshireSK47L20/03/20254adultvc57_irecords_extract
Ilkeston, DerbyshireSK44K07/03/20251adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G05/03/20251adultvc57_irecords_extract
Ladycroft Ave, BuxtonSK07S21/02/20251adultvc57_irecords_extract
Glossop, Shawmoor PlantationSK09G21/02/20251adultvc57_irecords_extract
Derbyshire Wildlife Trust Long Clough WoodandSK09G03/02/20251adultvc57_irecords_extract
Sandiacre GardenSK43T15/01/20251adultvc57_irecords_extract
Sandiacre GardenSK43T15/01/20251adultvc57_irecords_extract
High Leas Farm, RiberSK35D02/11/20242adultvc57_irecords_extract
upper cromford gardenSK25Y04/08/20241adultvc57_irecords_extract
Clover Close, ElvastonSK43B29/07/20241adultvc57_irecords_extract
Drakelow, Derbys.SK22F22/07/20241adultvc57_irecords_extract
Melbourne, DerbyshireSK32X19/07/20241adultvc57_irecords_extract
Markham Vale South TipSK47L19/02/20242adultvc57_irecords_extract
High Leas Farm, RiberSK35D16/02/20242adultvc57_irecords_extract
Birch ValeSK08I15/02/20241adultvc57_irecords_extract
Ilkeston, DerbyshireSK44K15/02/20241adultvc57_irecords_extract
Markham Vale DerbyshireSK47L05/07/20231adultvc57_irecords_extract
Upper Cromford GardenSK25Y07/06/20231adultvc57_irecords_extract
Mickleover gardenSK33C21/02/20231adultvc57_irecords_extract
Upper Cromford GardenSK25Y20/02/20231adultvc57_irecords_extract
Woodland AveSK43R06/07/20201adultvc57_irecords_extract
Melbourne, DerbyshireSK32X23/06/20201adultvc57_irecords_extract
Melbourne, DerbyshireSK32X17/09/20141adultvc57_irecords_extract
Backgarden MarehaySK34Z28/08/20121adultvc57_irecords_extract
Backgarden MarehaySK34Z14/08/20121adultvc57_irecords_extract
FOREMARK RESERVOIRSK32H06/11/20043adultvc57_irecords_extract
FOREMARK RESERVOIRSK32G29/03/20041adultvc57_irecords_extract
FOREMARK RESERVOIRSK32G29/03/20041adultvc57_irecords_extract
FOREMARK RESERVOIRSK32H15/03/20042adultvc57_irecords_extract
FOREMARK RESERVOIRSK32G28/11/20031adultvc57_irecords_extract
FOREMARK RESERVOIRSK32H18/11/20031adultvc57_irecords_extract
FOREMARK RESERVOIRSK32H16/09/20031adultvc57_irecords_extract

Acleris ferrugana       Acleris notana

Copyright Tony Davison © 2025 www.derbyshiremoths.org

Scroll to Top