– click for Adult Macro Verification Guidelines
– Rare / Uncommon / Scarce
– easy to identify, generally distinctive and unlikely to be confused with other species.ID pointers: Diagnostic snout species, triangular shaped, with a large chocolate brown panel on each forewing.
Distribution: (First record: 6 June 2000 at Blacka Moor, Dore. ) – (Last record: 30 June 2024 at Longdendale ) – First recorded in Derbyshire in 2000 – This species has expanded its range northwards in recent years. It remains a widespread but localised species in Derbyshire, with most records from the central and northern areas of VC57.
*** Last updated on 2 October 2025 by RP ***
Forewing: 14-16mm
Last Recorded Year: 2024
First Recorded Year: 2000
Last Recorded By – Christian Heintzen
Last Recorded General Area – Longdendale
Selected Images: Late Claire Miles © – 22/6/2022 Hathersage, Peak District, found resting on Snowberry. / Clive Ashton © – 1 trapped in his garden trap in Cromford 20th June 2023.
Image Gallery
No gallery images found for this moth.
Distribution Map for Hypena crassalis
Found 61 records
↳ 15 from After 2025
↳ 18 from 2020 - 2024
↳ 28 from Before 2020
↳ 15 from After 2025
↳ 18 from 2020 - 2024
↳ 28 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 – Hypena crassalis
⚠️ 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:
Hypena crassalis
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Hypena crassalis
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Hypena crassalis
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: Hypena crassalis
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Hypena crassalis
AGR: -0.39% | Total % Change: -9.3%
CUSUM Analysis: Hypena crassalis
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 8 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 2007, reaching above average levels. The lowest population point occurred near 2004, 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: Hypena crassalis
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Hypena crassalis
Hypena crassalis
( 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 - Hypena crassalis – 61 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Darwin Forest | SK26X | 01/07/2025 | 1 | adult | vc57_irecords_extract |
| Darwin Forest | SK26X | 03/07/2025 | 1 | adult | vc57_irecords_extract |
| Darwin Forest | SK26X | 04/07/2025 | 1 | adult | vc57_irecords_extract |
| Darwin Forest | SK26X | 05/07/2025 | 1 | adult | vc57_irecords_extract |
| Cromford Moor | SK25X | 13/07/2025 | 1 | adult | vc57_irecords_extract |
| Ladycroft Ave, Buxton | SK07S | 21/06/2025 | 1 | adult | vc57_irecords_extract |
| Darwin Forest | SK26X | 30/06/2025 | 5 | adult | vc57_irecords_extract |
| Longdendale, Wildboar Clough Woodland | SK09U | 18/06/2025 | 2 | adult | vc57_irecords_extract |
| Derbyshire Wild Life Trust Long Clough | SK09G | 20/06/2025 | 1 | adult | vc57_irecords_extract |
| Derbyshire Wild Life Trust Long Clough, Herod Clough | SK09G | 20/06/2025 | 3 | adult | vc57_irecords_extract |
| Derbyshire Wild Life Trust Long Clough | SK09G | 27/06/2025 | 1 | adult | vc57_irecords_extract |
| Glossop, Gnat Hole Rough Fields | SK09L | 13/05/2025 | 4 | adult | vc57_irecords_extract |
| Longdendale, Wildboar Clough Woodland | SK09U | 20/05/2025 | 3 | adult | vc57_irecords_extract |
| Glossop, Gnat Hole Rough Fields | SK09L | 23/05/2025 | 2 | adult | vc57_irecords_extract |
| Derbyshire Wild Life Trust Long Clough, Herod Clough | SK09G | 24/05/2025 | 7 | adult | vc57_irecords_extract |
| Hartington, Buxton SKAD, UK | SK16F | 01/07/2024 | 1 | Adult | vc57_irecords_extract |
| Derbyshire Wild Life Trust Long Clough | SK09G | 03/06/2024 | 3 | adult | vc57_irecords_extract |
| Glossop, Shawmoor Plantation | SK09F | 28/06/2024 | 1 | adult | vc57_irecords_extract |
| Longdendale, Wildboar Clough | SK09U | 30/06/2024 | 1 | adult | vc57_irecords_extract |
| Derbyshire Wild Life Trust Long Clough | SK09G | 25/05/2024 | 4 | adult | vc57_irecords_extract |
| Longdendale, Wildboar Clough | SK09U | 30/05/2024 | 1 | adult | vc57_irecords_extract |
| Glossop, Gnat Hole Rough Fields | SK09L | 01/07/2023 | 1 | adult | vc57_irecords_extract |
| Longdendale, Wildboar Clough | SK09U | 07/07/2023 | 3 | adult | vc57_irecords_extract |
| Lower Cromford Garden | SK25Y | 20/06/2023 | 1 | adult | vc57_irecords_extract |
| Lower Cromford Garden | SK25Y | 24/06/2023 | 1 | adult | vc57_irecords_extract |
| Darwin Forest | SK26X | 27/06/2023 | 4 | adult | vc57_irecords_extract |
| Darwin Forest | SK26X | 28/06/2023 | 4 | adult | vc57_irecords_extract |
| Glossop, Gnat Hole Rough Fields | SK09L | 08/06/2023 | 1 | adult | vc57_irecords_extract |
| Hathersage, Derbyshire, UK | SK28F | 21/06/2022 | 1 | adult | vc57_irecords_extract |
| Clarkes Plantation, Two Dales, Matlock | SK26W | 23/07/2021 | 5 | adult | Danes_2019-2021 |
| Findern, Derbyshire, DEAZ | SK33A | 13/06/2021 | 1 | adult | vc57_irecords_extract |
| Ferneydale Avenue | SK07Q | 13/06/2021 | 1 | adult | vc57_irecords_extract |
| Station Road, Darley Dale | SK26R | 14/06/2020 | 1 | adult | vc57_irecords_extract |
| Paddly Gorge, Derbyshire | SK27P | 05/06/2018 | 1 | adult | vc57_irecords_extract |
| Birch Vale | SK08I | 25/07/2017 | 1 | adult | vc57_irecords_extract |
| Birch Vale | SK08I | 13/06/2017 | 1 | adult | vc57_irecords_extract |
| Dovedale | SK15K | 11/07/2011 | 1 | Adult | vc57_danes_bc_data |
| Flash Lane,Beeley Moor | SK26X | 02/07/2011 | 1 | Adult | vc57_danes_bc_data |
| Flash Lane,Beeley Moor | SK26X | 27/06/2011 | 1 | Adult | vc57_danes_bc_data |
| Froggatt Edge,Froggatt | SK27N | 03/06/2011 | 1 | Adult | vc57_danes_bc_data |
| Far Cross,Cavendish Park,Matlock | SK36A | 03/07/2009 | 2 | Adult | vc57_danes_bc_data |
| Far Cross,Cavendish Park,Matlock | SK36A | 01/07/2009 | 1 | Adult | vc57_danes_bc_data |
| Flash Lane,Beeley Moor | SK26X | 26/06/2009 | 9 | Adult | vc57_danes_bc_data |
| Far Cross,Cavendish Park,Matlock | SK36A | 25/07/2008 | 1 | Adult | vc57_danes_bc_data |
| Flash Lane,Beeley Moor | SK26X | 03/08/2007 | 3 | Adult | vc57_danes_bc_data |
| Flash Lane,Beeley Moor | SK26X | 16/06/2007 | 15 | Adult | vc57_danes_bc_data |
| Flash Lane,Beeley Moor | SK26X | 17/06/2006 | 11 | Adult | vc57_danes_bc_data |
| Darley Forest | SK26X | 23/06/2005 | 3 | Adult | vc57_danes_bc_data |
| Flash Lane,Beeley Moor (site not precise) | SK26Z | 13/07/2004 | 1 | Adult | vc57_danes_bc_data |
| Flash Lane, Beeley Moor (site not precise) | SK26Z | 13/07/2004 | 1 | Adult | vc57_danes_bc_data |
| Blacka Moor | SK28V | 06/07/2003 | 1 | Adult | vc57_irecords_extract |
| Blacka Moor, Dore, Sheffield | SK28V | 06/06/2003 | 1 | Adult | vc57_danes_bc_data |
| Blacka Moor, Dore, Sheffield | SK28V | 06/06/2003 | 1 | Adult | vc57_danes_bc_data |
| Clough Wood,Darley Dale | SK26K | 21/07/2001 | 1 | Adult | vc57_danes_bc_data |
| Clough Wood,Darley Dale | SK26K | 21/07/2001 | 1 | Adult | vc57_danes_bc_data |
| Blacka Moor, Dore, Sheffield | SK28V | 26/06/2001 | 1 | Adult | vc57_danes_bc_data |
| Blacka Moor, Dore, Sheffield | SK28V | 26/06/2001 | 1 | Adult | vc57_danes_bc_data |
| Blacka Moor, Dore, Sheffield | SK28V | 04/07/2000 | 1 | Adult | vc57_danes_bc_data |
| Blacka Moor, Dore, Sheffield | SK28V | 04/07/2000 | 1 | Adult | vc57_danes_bc_data |
| Blacka Moor, Dore, Sheffield | SK28V | 06/06/2000 | 4 | Adult | vc57_danes_bc_data |
| Blacka Moor, Dore, Sheffield | SK28V | 06/06/2000 | 4 | Adult | vc57_danes_bc_data |