– click for Adult Macro Verification Guidelines
– Rare / Uncommon / Scarce
– easy to identify, generally distinctive and unlikely to be confused with other species.ID pointers: Appearing like a minor species. There is a black streak at the base of the forewing and a short diagonal one close by, along with overall grey colouring is diagnostic. The whitish-grey form, shown in below image is most frequent. Can show pinkish tones on leading edge and around oval and kidney marks.
Distribution: (Last record: 16 July 2024 at Mellor ) – An uncommon and locally distributed species in Derbyshire, of wet and damp habitats. With only two records reported from the high NW of the county in 2019, and the species appearing not to have been reviewed in any literature since 1986, it is difficult to know the current status in the county.
*** Last updated on 2 October 2025 by RP ***
Forewing: 13-15mm
Last Recorded Year: 2024
Last Recorded By – David Knass
Last Recorded General Area – Mellor
Selected Images: Birch Vale, North Derbyshire – Jane Hewitt©
Image Gallery
No gallery images found for this moth.
Distribution Map for Brachylomia viminalis
Found 24 records
↳ 0 from After 2025
↳ 4 from 2020 - 2024
↳ 20 from Before 2020
↳ 0 from After 2025
↳ 4 from 2020 - 2024
↳ 20 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 – Brachylomia viminalis
⚠️ 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:
Brachylomia viminalis
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Brachylomia viminalis
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Brachylomia viminalis
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: Brachylomia viminalis
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Brachylomia viminalis
AGR: 0% | Total % Change: 0%
CUSUM Analysis: Brachylomia viminalis
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 19 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 2000, reaching above average levels. The lowest population point occurred near 2000, 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: Brachylomia viminalis
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Brachylomia viminalis
Brachylomia viminalis
( 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 - Brachylomia viminalis – 24 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Mellor | SJ98Z | 16/07/2024 | 1 | adult | vc57_irecords_extract |
| Longhurst Lane, Mellor | SJ98Z | 08/08/2020 | 1 | adult | Danes_2019-2021 |
| Longhurst Lane, Mellor | SJ98Z | 24/07/2020 | 1 | adult | Danes_2019-2021 |
| Longhurst Lane, Mellor | SJ98Z | 21/07/2020 | 1 | adult | Danes_2019-2021 |
| Birch Vale | SK08I | 17/08/2019 | 1 | adult | vc57_irecords_extract |
| Birch Vale | SK08I | 03/08/2019 | 1 | adult | vc57_irecords_extract |
| Drayton Ave,Mackworth,Derby | SK33D | 06/08/2005 | 1 | Adult | vc57_danes_bc_data |
| Drayton Ave,Mackworth,Derby | SK33D | 06/08/2005 | 1 | Adult | vc57_danes_bc_data |
| Cross Green Cottages,Flint Lane,South Darley | SK26Q | 17/06/2005 | 1 | Adult | vc57_danes_bc_data |
| Ault Hucknall,Glapwell | SK46S | 16/07/2004 | 1 | Adult | vc57_danes_bc_data |
| Cross Green Cottages,Flint Lane,South Darley | SK26Q | 27/07/2003 | 1 | Adult | vc57_danes_bc_data |
| Main St,Kings Newton,Melbourne | SK32Y | 25/06/2003 | 1 | Adult | vc57_danes_bc_data |
| Charlesworth St,Carr Vale,Bolsover | SK46U | 02/08/2000 | 1 | Adult | vc57_danes_bc_data |
| School Close,Parkway Gardens,Darley Dale | SK26R | 11/06/1999 | 1 | Adult | vc57_danes_bc_data |
| Matlock (Teacher Training College) | SK36A | 31/07/1984 | 1 | Adult | vc57_danes_bc_data |
| Matlock (Teacher Training College) | SK36A | 07/08/1981 | 1 | Adult | vc57_danes_bc_data |
| Clough Wood,Darley Dale | SK26K | 24/05/1981 | 1 | Larvae | vc57_danes_bc_data |
| Clough Wood,Darley Dale | SK26K | 10/06/1980 | 2 | Larvae | vc57_danes_bc_data |
| Unknown | SK14R | 19/08/1978 | 1 | Adult | vc57_danes_bc_data |
| Holly Wood NR, Edlaston, Ashbourne | SK14R | 19/08/1978 | 1 | Adult | vc57_danes_bc_data |
| Hilton GP (site not precise) | SK23K | 10/07/1976 | 1 | Adult | vc57_danes_bc_data |
| Gleadless area (site not precise) | SK38W | 09/06/1970 | 1 | Adult | vc57_danes_bc_data |
| The Old Manse, Ault Hucknall, Glapwell | SK46S | 19/07/1968 | 1 | Adult | vc57_danes_bc_data |
| Berry St, Hepthorne Lane, North Wingfield | SK46C | 07/08/1967 | 1 | Adult | vc57_danes_bc_data |