– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Generally Common / Widespread
– easy to identify, generally distinctive and unlikely to be confused with other species.ID pointers: An attractive species. A complex and intricate array of markings in orangey-brown, dark brown and metallic blue. An attractively marked costa with four diagonal black wedges bordered with orange and creamy dashes.
Distribution: A locally common and widespread species in the county. Favours rosaceous trees, especially apple, Rowan and cherry.
*** Last updated on 27 July 2025 by TD ***
Blue-coded] moths are not stored on the website at this current time. IMAGES BELOW: Belper, Derbyshire – Dave Evans© / Chaddesden (May 2025) Martin Roome©
49.200 BF1216 - Enarmonia formosana - (Cherry-bark tortrix) - July 2015 Belper, Derbyshire - photo Dave Evans©
Distribution Map for Enarmonia formosana
Found 49 records
↳ 14 from After 2025
↳ 10 from 2020 - 2024
↳ 25 from Before 2020
↳ 14 from After 2025
↳ 10 from 2020 - 2024
↳ 25 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.
******* Choose ONLY one at a time, of either Monad, Tetrad or Hectad Distribution - each has it's own set of data. Also, the distribution maps cover ALL recorded data. *******
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.
Land-cover * shows the variety of land-cover within the VC57 area, based on the CORINE (Coordination of Information on the Environment) forty-four thematic classes of land-cover. This will show, to a greater or lesser degree, the number and variety of moths found in different land-cover types. The UK continues to operate within the Copernicus programme, with the UK Centre for Ecology & Hydrology (UKCEH) providing Corine Land Cover (CLC) datasets for the UK and its territories.
NBN Atlas UK Distribution for – Enarmonia formosana
⚠️ 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:
Enarmonia formosana
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Enarmonia formosana
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Enarmonia formosana
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: Enarmonia formosana
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Enarmonia formosana
AGR: 0.33% | Total % Change: 7.1%
CUSUM Analysis: Enarmonia formosana
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 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 2025, 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: Enarmonia formosana
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Enarmonia formosana
Enarmonia formosana
( 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 - Enarmonia formosana – 49 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Chaddesden, Derby | SK33T | 25/08/2025 | 1 | adult | vc57_irecords_extract |
| Norton Lees, Sheffield | SK38L | 08/07/2025 | 1 | adult | vc57_irecords_extract |
| Norton Lees, Sheffield | SK38L | 18/07/2025 | 2 | adult | vc57_irecords_extract |
| Belper, Derbyshire | SK34N | 13/07/2025 | 1 | adult | vc57_irecords_extract |
| Mickleover garden | SK33C | 11/07/2025 | 1 | adult | vc57_irecords_extract |
| Staveley garden SYA | SK47H | 15/06/2025 | 1 | adult | vc57_irecords_extract |
| Norton Lees, Sheffield | SK38L | 20/06/2025 | 1 | adult | vc57_irecords_extract |
| Norton Lees, Sheffield | SK38L | 25/06/2025 | 1 | adult | vc57_irecords_extract |
| Norton Lees, Sheffield | SK38L | 27/06/2025 | 1 | adult | vc57_irecords_extract |
| Norton Lees, Sheffield | SK38L | 30/06/2025 | 1 | adult | vc57_irecords_extract |
| Darwin Forest | SK26X | 30/06/2025 | 1 | adult | vc57_irecords_extract |
| Chaddesden, Derby | SK33T | 13/06/2025 | 1 | adult | vc57_irecords_extract |
| Chaddesden, Derby | SK33T | 17/05/2025 | 1 | adult | vc57_irecords_extract |
| Chaddesden, Derby | SK33T | 23/05/2025 | 1 | adult | vc57_irecords_extract |
| upper cromford garden | SK25Y | 09/08/2024 | 1 | adult | vc57_irecords_extract |
| Norton Lees, Sheffield (VC) | SK38L | 28/07/2024 | 2 | adult | vc57_irecords_extract |
| Norton Lees, Sheffield (VC) | SK38L | 02/06/2024 | 1 | adult | vc57_irecords_extract |
| Norton Lees, Sheffield (VC) | SK38L | 24/06/2024 | 4 | adult | vc57_irecords_extract |
| Norton Lees, Sheffield (VC) | SK38L | 26/06/2024 | 2 | adult | vc57_irecords_extract |
| Woodland Ave | SK43R | 07/07/2023 | 1 | adult | vc57_irecords_extract |
| Belper | SK34U | 19/07/2023 | 1 | adult | vc57_irecords_extract |
| Mickleover garden | SK33C | 25/06/2023 | 1 | adult | vc57_irecords_extract |
| Kings Newton Fields | SK32Y | 19/06/2022 | 1 | Adult | vc57_irecords_extract |
| Sandiacre | SK43T | 14/06/2022 | 1 | adult | vc57_irecords_extract |
| Norton Lees | SK38L | 19/08/2019 | 1 | adult | Danes_2019-2021 |
| Main Street, Kings Newton | SK32Y | 17/07/2019 | 1 | Adult | vc57_irecords_extract |
| Norton Lees | SK38L | 25/07/2019 | 1 | adult | Danes_2019-2021 |
| Norton Lees | SK38L | 12/07/2019 | 1 | adult | Danes_2019-2021 |
| Norton Lees | SK38L | 22/06/2019 | 1 | adult | Danes_2019-2021 |
| Birch Vale | SK08I | 11/07/2018 | 1 | adult | vc57_irecords_extract |
| Norton Lees | SK38L | 02/06/2018 | 1 | Adult | vc57_irecords_extract |
| Wood Lane,Newhall,Swadlincote | SK22V | 02/08/2013 | 1 | Adult | vc57_danes_bc_data |
| Lang Rd, Alvaston, Derby | SK33R | 04/07/2013 | 1 | Adult | vc57_danes_bc_data |
| Wood Lane,Newhall,Swadlincote | SK22V | 05/07/2013 | 1 | Adult | vc57_danes_bc_data |
| Lancaster Ave,Sandiacre | SK43S | 12/07/2013 | 1 | Adult | vc57_danes_bc_data |
| Lancaster Ave,Sandiacre | SK43S | 23/07/2012 | 1 | Adult | vc57_danes_bc_data |
| Lancaster Ave,Sandiacre | SK43S | 27/06/2012 | 1 | Adult | vc57_danes_bc_data |
| Lancaster Ave,Sandiacre | SK43S | 29/06/2012 | 1 | Adult | vc57_danes_bc_data |
| Backgarden Marehay | SK34Z | 03/07/2011 | 2 | adult | vc57_irecords_extract |
| Bamford St,Ripley | SK34Z | 03/07/2011 | 2 | Adult | vc57_danes_bc_data |
| Backgarden Marehay | SK34Z | 14/06/2011 | 1 | adult | vc57_irecords_extract |
| Bamford St,Ripley | SK34Z | 14/06/2011 | 1 | Adult | vc57_danes_bc_data |
| Hardhurst Rd, Alvaston, Derby | SK33W | 02/06/2010 | 1 | Adult | vc57_danes_bc_data |
| Cramside Wood (DWT reserve) | SK17R | 20/06/2007 | 1 | Adult | vc57_danes_bc_data |
| Main Street, Kings Newton | SK32Y | 13/07/2005 | 1 | Adult | vc57_irecords_extract |
| Main St,Kings Newton,Melbourne | SK32Y | 13/07/2005 | 1 | Adult | vc57_danes_bc_data |
| Spinney Hill,Melbourne | SK32X | 06/08/2004 | 1 | Adult | vc57_danes_bc_data |
| Main Street, Kings Newton | SK32Y | 17/07/2004 | 1 | Adult | vc57_irecords_extract |
| Main St,Kings Newton,Melbourne | SK32Y | 17/07/2004 | 1 | Adult | vc57_danes_bc_data |