– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Generally Common / Widespread 
– Day-flying
– care required in the identification process, as confusion with similar species is likely – quality photographs required. ID pointers: A lead grey coloured moth with white streaks.
Distribution: Very common in the county on all grassland areas with significant quantities of Cocksfoot and which are not heavily grazed. Adults visit Buttercups during the flight period.
*** Last updated on 6 May 2025 by RP ***
Blue-coded] moths are not stored on the website at this current time. IMAGES BELOW: Duffield, Derbyshire – Mick Ball ©
19.007 BF391 - Glyphipterix simpliciella - Cocksfoot Moth Duffield, Derbyshire Mick Ball©
Distribution Map for Glyphipterix simpliciella
Found 79 records
↳ 14 from After 2025
↳ 28 from 2020 - 2024
↳ 37 from Before 2020
↳ 14 from After 2025
↳ 28 from 2020 - 2024
↳ 37 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 – Glyphipterix simpliciella
⚠️ 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:
Glyphipterix simpliciella
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Glyphipterix simpliciella
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Glyphipterix simpliciella
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: Glyphipterix simpliciella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Glyphipterix simpliciella
AGR: -0.29% | Total % Change: -6%
CUSUM Analysis: Glyphipterix simpliciella
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 6 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 2004, reaching above average levels. The lowest population point occurred near 2019, 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: Glyphipterix simpliciella
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Glyphipterix simpliciella
Glyphipterix simpliciella
( 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 - Glyphipterix simpliciella – 79 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| DWT Wyver Lane | SK34P | 03/06/2025 | 11 | adult | vc57_irecords_extract |
| Markham Vale South Tip | SK47K | 09/05/2025 | 1 | adult | vc57_irecords_extract |
| Hemsworth Road, Sheffield, England, GB | SK38L | 10/05/2025 | 1 | Adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 13/05/2025 | 2 | adult | vc57_irecords_extract |
| rose end meadows | SK25Y | 14/05/2025 | 2 | adult | vc57_irecords_extract |
| DWT Wyver Lane | SK35K | 17/05/2025 | 5 | adult | vc57_irecords_extract |
| Cote Heath Allotments, Buxton | SK07R | 18/05/2025 | 1 | adult | vc57_irecords_extract |
| Holloway | SK35I | 19/05/2025 | 9 | adult | vc57_irecords_extract |
| Chee Dale: Station Quarry | SK17G | 17/05/2025 | 3 | adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 20/05/2025 | 100 | adult | vc57_irecords_extract |
| Buxton: Light Wood | SK07M | 18/05/2025 | 6 | adult | vc57_irecords_extract |
| Deep Dale | SK17Q | 19/05/2025 | 2 | adult | vc57_irecords_extract |
| Bakewell: bank of River Wye | SK26I | 20/05/2025 | 1 | adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 28/05/2025 | 60 | adult | vc57_irecords_extract |
| Gleadless Valley LNR (land near Newfield School) | SK38L | 02/06/2024 | 1 | Adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 05/06/2024 | 12 | adult | vc57_irecords_extract |
| Eley Way, High Peak, England, GB | SK07P | 17/05/2024 | 1 | Adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 21/05/2024 | 10 | adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 21/05/2024 | 90 | adult | vc57_irecords_extract |
| Deep Dale NR | SK17Q | 19/05/2024 | 1 | adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 29/05/2024 | 75 | adult | vc57_irecords_extract |
| Graphite Way, High Peak, England, GB | SK09D | 30/05/2024 | 1 | Adult | vc57_irecords_extract |
| Forbes Hole LNR | SK43W | 10/08/2023 | 2 | adult | vc57_irecords_extract |
| Ruby Wood | SK16K | 04/06/2023 | 1 | adult | vc57_irecords_extract |
| Peak District National Park, Bakewell, England, GB | SK26I | 01/06/2023 | 1 | Adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 07/06/2023 | 10 | adult | vc57_irecords_extract |
| Markham Vale , Derbyshire | SK47L | 09/05/2023 | 100 | adult | vc57_irecords_extract |
| Mousley Botton NR | SJ98X | 28/05/2023 | 3 | adult | vc57_irecords_extract |
| Linacre Park/Reservoirs | SK37G | 02/06/2022 | 1 | adult | vc57_irecords_extract |
| Carr Vale/Peter Fidler NR | SK47K | 15/05/2022 | 4 | adult | vc57_irecords_extract |
| Sett Valley | SJ98X | 17/05/2022 | 1 | adult | vc57_irecords_extract |
| Derbyshire, UK | SK07Q | 21/05/2022 | 1 | Adult | vc57_irecords_extract |
| SK/Hartington | SK15J | 29/05/2022 | 12 | adult | vc57_irecords_extract |
| SK/Dale End | SK15P | 29/05/2022 | 12 | adult | vc57_irecords_extract |
| SK/Biggin Dale | SK15P | 29/05/2022 | 12 | adult | vc57_irecords_extract |
| SK/Biggin Dale | SK15N | 29/05/2022 | 12 | adult | vc57_irecords_extract |
| SK/Wolfscote Dale | SK15I | 29/05/2022 | 12 | adult | vc57_irecords_extract |
| SK/Beresford Dale | SK15J | 29/05/2022 | 12 | adult | vc57_irecords_extract |
| Darley Dale | SK26R | 16/05/2022 | 1 | Adult | vc57_irecords_extract |
| Derbyshire, UK | SK17K | 19/05/2022 | 1 | Adult | vc57_irecords_extract |
| Chinley Head | SK08M | 14/05/2022 | 20 | adult | vc57_irecords_extract |
| Mill Lane, Belper | SK34N | 15/05/2020 | 20 | adult | vc57_irecords_extract |
| Birch Vale | SK08I | 16/05/2019 | 1 | adult | vc57_irecords_extract |
| Etherow CP | SJ99Q | 21/05/2018 | 1 | adult | vc57_irecords_extract |
| Litton Mill | SK17L | 28/05/2017 | 20 | adult | vc57_irecords_extract |
| Gang Mine NR | SK25X | 19/06/2016 | 1 | adult | vc57_irecords_extract |
| Pleasley Colliery NR, Pleasley | SK46X | 05/06/2016 | 1 | Adult | vc57_danes_bc_data |
| South Wingfield | SK35Y | 28/05/2016 | 3 | adult | vc57_irecords_extract |
| Main Street, Kings Newton | SK32Y | 04/06/2015 | 1 | Adult | vc57_irecords_extract |
| Millennium Meadow NR, Duffield | SK34L | 01/06/2014 | 1 | Adult | vc57_danes_bc_data |
| Melbourne (Whistlewood Common) | SK32S | 05/06/2014 | 2 | Adult | vc57_danes_bc_data |
| Millennium Meadow NR, Duffield | SK34L | 06/06/2014 | 1 | Adult | vc57_danes_bc_data |
| Millennium Meadow NR, Duffield | SK34L | 30/05/2014 | 1 | Adult | vc57_danes_bc_data |
| Millennium Meadow NR, Duffield | SK34L | 31/05/2014 | 1 | Adult | vc57_danes_bc_data |
| Millennium Meadow NR, Duffield | SK34L | 02/05/2014 | 1 | Adult | vc57_danes_bc_data |
| Millennium Meadow NR, Duffield | SK34L | 03/05/2014 | 1 | Adult | vc57_danes_bc_data |
| Millennium Meadow NR, Duffield | SK34L | 12/05/2014 | 1 | Adult | vc57_danes_bc_data |
| Millennium Meadow NR, Duffield | SK34L | 14/05/2014 | 1 | Adult | vc57_danes_bc_data |
| Millennium Meadow NR, Duffield | SK34L | 15/05/2014 | 1 | Adult | vc57_danes_bc_data |
| Millennium Meadow NR, Duffield | SK34L | 17/05/2014 | 1 | Adult | vc57_danes_bc_data |
| Willington (nr r Trent), Derby | SK32E | 19/05/2014 | 4 | Adult | vc57_danes_bc_data |
| Millennium Meadow NR, Duffield | SK34L | 02/06/2013 | 1 | Adult | vc57_danes_bc_data |
| Millennium Meadow NR, Duffield | SK34L | 25/05/2013 | 1 | Adult | vc57_danes_bc_data |
| Ladycroft Ave,Buxton | SK07S | 01/06/2012 | 1 | Adult | vc57_danes_bc_data |
| Shipley Park (open mosaic grassland), Ilkeston | SK44L | 17/06/2012 | 1 | Adult | vc57_danes_bc_data |
| Bretby Wood, Newhall, Swadlincote | SK22V | 29/05/2012 | 1 | Adult | vc57_danes_bc_data |
| Derbyshire, UK | SK07M | 13/06/2011 | 1 | Adult | vc57_irecords_extract |
| Ripley Greenway | SK44E | 16/05/2010 | 1 | adult | vc57_irecords_extract |
| Ripley Greenway, Ripley | SK44E | 16/05/2010 | 1 | Adult | vc57_danes_bc_data |
| Crich (site not precise) | SK35M | 25/05/2009 | 6 | Adult | vc57_danes_bc_data |
| Alfreton Park, Alfreton | SK45C | 29/05/2008 | 1 | Adult | vc57_danes_bc_data |
| Alfreton Park, Alfreton | SK45C | 21/05/2008 | 1 | Adult | vc57_danes_bc_data |
| Tideswell Dale | SK17L | 09/06/2007 | 6 | Adult | vc57_danes_bc_data |
| Foremark Resr, Ticknall | SK32H | 11/06/2005 | 6 | Adult | vc57_danes_bc_data |
| Carvers Rocks, Hartshorne, Swadlincote | SK32G | 29/05/2005 | 6 | Adult | vc57_danes_bc_data |
| Edgecote Drive,Newhall,Swadlincote | SK22V | 04/06/2004 | 1 | Adult | vc57_danes_bc_data |
| Carvers Rocks (new plantation),Hartshorne,Swadlincote | SK32G | 31/05/2004 | 30 | Adult | vc57_danes_bc_data |
| Walton Golf Course, Chesterfield | SK36U | 09/06/1994 | 1 | Adult | vc57_danes_bc_data |
| Dovedale (site not precise) | SK15L | 20/06/1939 | 1 | Adult | vc57_danes_bc_data |