– click for Adult Macro Verification Guidelines
– Rare / Uncommon / Scarce
– easy to identify, generally distinctive and unlikely to be confused with other species.ID pointers: One of a few “Thorns” that are very similar. The August Thorn can be distinguished by the shape of the cross-lines on the forewing. The inner line is noticeably curved, and the outer-line has a “kink” in it where it meets the leading edge. Also note the white “Knee Socks” on the legs – September Thorn has yellow “Knee Socks”.
Distribution: (Last record: 1 July 2025 at Chaddesden ) – A resident that is locally distributed and very scarce in Derbyshire. Easily confused with September Thorn. Very few records each year. There are currently 9 reported records between 2018 and the end of July 2024. Historical records show a similar trend, so this species has never been common in the county.
*** Last updated on 2 October 2025 by RP ***
Forewing: 18-22mm
Last Recorded Year: 2025
Last Recorded By – Neil Loverock
Last Recorded General Area – Chaddesden
Selected Images: 10th August 2020 – Allestree, Derby – Image by Stephen Plant ©; 14th July 2024 – Chaddesden, Derby – Image by Martin Roome ©/ 1st July 2025 -Chaddesden – Neil Loverock©
Image Gallery
No gallery images found for this moth.
Distribution Map for Ennomos quercinaria
Found 80 records
↳ 2 from After 2025
↳ 8 from 2020 - 2024
↳ 70 from Before 2020
↳ 2 from After 2025
↳ 8 from 2020 - 2024
↳ 70 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 – Ennomos quercinaria
⚠️ 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:
Ennomos quercinaria
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Ennomos quercinaria
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Ennomos quercinaria
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: Ennomos quercinaria
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Ennomos quercinaria
AGR: 0% | Total % Change: 0%
CUSUM Analysis: Ennomos quercinaria
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 10 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 2009, reaching above average levels. The lowest population point occurred near 2007, 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: Ennomos quercinaria
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Ennomos quercinaria
Ennomos quercinaria
( 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 - Ennomos quercinaria – 80 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Chaddesden Garden | SK33T | 01/07/2025 | 1 | adult | vc57_irecords_extract |
| Inkersall garden | SK47G | 04/07/2025 | 1 | adult | vc57_irecords_extract |
| Quarndon, Derbyshire | SK34F | 09/07/2024 | 1 | adult | vc57_irecords_extract |
| Inkersall garden | SK47G | 30/07/2024 | 1 | adult | vc57_irecords_extract |
| Sandiacre | SK43S | 30/07/2024 | 1 | adult | vc57_irecords_extract |
| Chaddesden, Derby | SK33T | 14/07/2024 | 1 | adult | vc57_irecords_extract |
| Allestree, Derby, Elm Grove | SK34K | 12/08/2023 | 1 | adult | vc57_irecords_extract |
| Allestree, Derby | SK33P | 11/08/2022 | 1 | adult | vc57_irecords_extract |
| Garden, Walton | SK36U | 30/07/2022 | 1 | adult | vc57_irecords_extract |
| Sandiacre | SK43T | 22/07/2021 | 1 | adult | vc57_irecords_extract |
| DRONFIELD WOODHOUSE | SK37J | 24/08/2019 | 1 | adult | vc57_irecords_extract |
| DRONFIELD WOODHOUSE | SK37J | 07/08/2018 | 1 | adult | vc57_irecords_extract |
| Marlborough Road, Long Eaton | SK43X | 31/08/2018 | 1 | adult | vc57_irecords_extract |
| Main Street, Kings Newton | SK32Y | 16/07/2018 | 1 | Adult | vc57_irecords_extract |
| DRONFIELD WOODHOUSE | SK37J | 25/08/2014 | 1 | adult | vc57_irecords_extract |
| DRONFIELD WOODHOUSE | SK37J | 23/08/2014 | 1 | adult | vc57_irecords_extract |
| Cross Green Cottages,Flint Lane,South Darley | SK26Q | 28/08/2014 | 1 | Adult | vc57_danes_bc_data |
| Hardhurst Rd, Alvaston, Derby | SK33W | 04/08/2014 | 1 | Adult | vc57_danes_bc_data |
| Dronfield Woodhouse | SK37J | 17/08/2013 | 1 | adult | vc57_irecords_extract |
| Dronfield Woodhouse | SK37J | 12/08/2013 | 1 | adult | vc57_irecords_extract |
| The Old Manse, Ault Hucknall, Glapwell | SK46S | 30/08/2013 | 1 | Adult | vc57_danes_bc_data |
| Pleasley Pit CP, Pleasley | SK46X | 10/08/2013 | 1 | Adult | vc57_danes_bc_data |
| The Old Manse, Ault Hucknall, Glapwell | SK46S | 30/08/2013 | 1 | Adult | vc57_danes_bc_data |
| Cross Green Cottages,Flint Lane,South Darley | SK26Q | 03/09/2011 | 1 | Adult | vc57_danes_bc_data |
| Hardhurst Rd, Alvaston, Derby | SK33W | 22/09/2011 | 1 | Adult | vc57_danes_bc_data |
| Hardhurst Rd, Alvaston, Derby | SK33W | 22/08/2011 | 1 | Adult | vc57_danes_bc_data |
| Cross Green Cottages,Flint Lane,South Darley | SK26Q | 01/09/2010 | 1 | Adult | vc57_danes_bc_data |
| Meynell Langley,Kirk Langley | SK23Z | 08/08/2009 | 6 | Adult | vc57_danes_bc_data |
| Ault Hucknall,Glapwell | SK46S | 08/09/2007 | 1 | Adult | vc57_danes_bc_data |
| Ault Hucknall,Glapwell | SK46S | 11/08/2007 | 1 | Adult | vc57_danes_bc_data |
| Ault Hucknall,Glapwell | SK46S | 03/08/2007 | 1 | Adult | vc57_danes_bc_data |
| Ault Hucknall,Glapwell | SK46S | 10/08/2007 | 1 | Adult | vc57_danes_bc_data |
| Cross Green Cottages,Flint Lane,South Darley | SK26Q | 14/09/2006 | 1 | Adult | vc57_danes_bc_data |
| Cross Green Cottages,Flint Lane,South Darley | SK26Q | 05/08/2006 | 1 | Adult | vc57_danes_bc_data |
| Cross Green Cottages,Flint Lane,South Darley | SK26Q | 22/08/2006 | 1 | Adult | vc57_danes_bc_data |
| Wilmot St,Long Eaton | SK43R | 03/08/2006 | 1 | Adult | vc57_danes_bc_data |
| Ault Hucknall,Glapwell | SK46S | 10/08/2005 | 1 | Adult | vc57_danes_bc_data |
| Hasland,Chesterfield | SK37V | 09/08/2005 | 1 | Adult | vc57_danes_bc_data |
| Ault Hucknall,Glapwell | SK46S | 27/07/2004 | 1 | Adult | vc57_danes_bc_data |
| Dunstan Farm, Dronfield Woodhouse, Dronfield | SK37J | 06/09/1996 | 1 | Adult | vc57_danes_bc_data |
| Whitwell Wood,Whitwell,Worksop | SK57J | 07/08/1989 | 1 | Adult | vc57_danes_bc_data |
| Whitwell Wood,Whitwell,Worksop | SK57J | 07/08/1989 | 1 | Adult | vc57_danes_bc_data |
| Whitwell Wood,Whitwell,Worksop | SK57J | 07/08/1989 | 1 | Adult | vc57_danes_bc_data |
| Far Cross,Cavendish Park,Matlock | SK36A | 17/08/1983 | 1 | Adult | vc57_danes_bc_data |
| Barnard Ave, Coal Aston | SK37U | 01/01/1981 | 1 | Adult | vc57_danes_bc_data |
| Barnard Ave, Coal Aston | SK37U | 01/01/1981 | 1 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 07/09/1975 | 1 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 13/08/1975 | 1 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 14/08/1975 | 1 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 27/08/1975 | 4 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 29/08/1975 | 2 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 08/08/1975 | 2 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 09/08/1975 | 4 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 19/08/1975 | 1 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 20/08/1975 | 1 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 05/08/1975 | 1 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 06/08/1975 | 2 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 10/08/1975 | 1 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 11/08/1975 | 1 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 15/08/1975 | 1 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 18/08/1975 | 1 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 30/08/1975 | 1 | Adult | vc57_danes_bc_data |
| Field Close, Hilton, Burton on Trent | SK23K | 12/09/1974 | 1 | Adult | vc57_danes_bc_data |
| Welbeck Rd, Bolsover | SK47V | 22/08/1969 | 1 | Adult | vc57_danes_bc_data |
| The Old Manse, Ault Hucknall, Glapwell | SK46S | 01/09/1968 | 2 | Adult | vc57_danes_bc_data |
| The Old Manse, Ault Hucknall, Glapwell | SK46S | 08/09/1968 | 1 | Adult | vc57_danes_bc_data |
| The Old Manse, Ault Hucknall, Glapwell | SK46S | 14/08/1968 | 1 | Adult | vc57_danes_bc_data |
| The Old Manse, Ault Hucknall, Glapwell | SK46S | 11/08/1968 | 1 | Adult | vc57_danes_bc_data |
| Lumsdale House, Upper Lumsdale, Matlock | SK36A | 08/08/1959 | 1 | Adult | vc57_danes_bc_data |
| Lumsdale House, Upper Lumsdale, Matlock | SK36A | 26/08/1957 | 1 | Adult | vc57_danes_bc_data |
| Berry St, Hepthorne Lane | SK46C | 06/09/1953 | 1 | Adult | vc57_danes_bc_data |
| Berry St, Hepthorne Lane, North Wingfield | SK46C | 06/09/1953 | 1 | Adult | vc57_danes_bc_data |
| Repton Shrubs, Repton, Swadlincote (site not precise) | SK32B | 01/09/1935 | 1 | Adult | vc57_danes_bc_data |
| Normanton, Derby (site not precise) | SK33L | 01/09/1932 | 1 | Adult | vc57_danes_bc_data |
| Langley Mill, Heanor | SK44N | 01/01/1925 | 1 | Adult | vc57_danes_bc_data |
| Repton, Swadlincote (site not precise) | SK32B | 02/09/1906 | 1 | Adult | vc57_danes_bc_data |
| Bretby Park,Swadlincote (site not precise) | SK32B | 01/01/1885 | 1 | Adult | vc57_danes_bc_data |
| Repton Shrubs, Repton | SK32B | 01/01/1885 | 1 | Adult | vc57_danes_bc_data |
| Repton Shrubs, Repton | SK32B | 01/01/1885 | 1 | Adult | vc57_danes_bc_data |
| Repton, Swadlincote (site not precise) | SK32B | 01/01/1800 | 1 | Adult | vc57_danes_bc_data |