– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Rare / Uncommon / Scarce
– care required in the identification process, as confusion with similar species is likely – quality photographs required. Confusion Species: Bactra lacteana
ID pointers: The Male forewing is a brown, pale greyish-brown, yellowish-brown or orangey-brown, with darker markings, varying from almost uniform to a brown net-like pattern. Often there is a dark brown crescent shaped mark in the mid-wing at about two-thirds. The female forewing may be plain brownish with the dorsal two-thirds a dark brownish and the costal third pale brownish or pale brownish with a dark brown streak from base to termen.
Distribution: (Last record: 26 August 2024 at Belper ) – From available data this species appears to be uncommon and localised across the county. One site recorded 10 individuals 9th June 2020, this appears to be an exceptional record.
*** Last updated on 2 October 2025 by RP ***
Last Recorded Year: 2024
Last Recorded By – Dave Evans
Last Recorded General Area – Belper
Selected Images: Kings Newton, Derbyshire – Will Soar©
Image Gallery
No gallery images found for this moth.
Distribution Map for Bactra lancealana
Found 43 records
↳ 12 from After 2025
↳ 8 from 2020 - 2024
↳ 23 from Before 2020
↳ 12 from After 2025
↳ 8 from 2020 - 2024
↳ 23 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 – Bactra lancealana
⚠️ 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:
Bactra lancealana
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Bactra lancealana
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Bactra lancealana
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: Bactra lancealana
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Bactra lancealana
AGR: 0.7% | Total % Change: 16.7%
CUSUM Analysis: Bactra lancealana
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 11 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 2020, reaching above average levels. The lowest population point occurred near 2018, 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: Bactra lancealana
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Bactra lancealana
Bactra lancealana
( 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 - Bactra lancealana – 43 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Dinting Nature Reserve | SK09C | 06/08/2025 | 1 | adult | vc57_irecords_extract |
| Belper, Derbyshire | SK34N | 06/08/2025 | 1 | adult | vc57_irecords_extract |
| Darwin Forest | SK26X | 05/07/2025 | 1 | adult | vc57_irecords_extract |
| Darwin Forest | SK36C | 06/07/2025 | 2 | adult | vc57_irecords_extract |
| National Stone Centre, Wirksworth. | SK25X | 30/07/2025 | 1 | adult | vc57_irecords_extract |
| upper cromford garden | SK25Y | 29/07/2025 | 2 | adult | vc57_irecords_extract |
| Belper | SK34N | 12/05/2025 | 1 | adult | vc57_irecords_extract |
| Belper | SK34N | 13/05/2025 | 1 | adult | vc57_irecords_extract |
| Belper | SK34N | 13/05/2025 | 1 | adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 20/05/2025 | 1 | adult | vc57_irecords_extract |
| Belper | SK34N | 29/05/2025 | 1 | adult | vc57_irecords_extract |
| Findern, Derbyshire | SK33A | 23/05/2025 | 1 | adult | vc57_irecords_extract |
| c | SK33T | 12/08/2024 | 1 | adult | vc57_irecords_extract |
| Hathersage | SK28F | 26/08/2024 | 1 | adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 05/06/2024 | 2 | adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 12/06/2024 | 1 | adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 07/06/2023 | 1 | adult | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 15/06/2023 | 1 | adult | vc57_irecords_extract |
| Derbyshire Wild Life Trust Long Clough | SK09G | 27/05/2023 | 1 | adult | vc57_irecords_extract |
| Golden Brook NR | SK43R | 09/06/2020 | 10 | adult | vc57_irecords_extract |
| Taddington High Mere | SK17K | 24/05/2019 | 1 | not recorded | vc57_irecords_extract |
| Main Street, Kings Newton | SK32Y | 19/07/2018 | 1 | Adult | vc57_irecords_extract |
| Backgarden Marehay | SK34Z | 04/08/2014 | 1 | adult | vc57_irecords_extract |
| Backgarden Marehay | SK34Z | 01/06/2014 | 1 | adult | vc57_irecords_extract |
| Backgarden Marehay | SK34Z | 15/05/2014 | 1 | adult | vc57_irecords_extract |
| Midway Rd,Midway,Swadlincote | SK32A | 15/06/2013 | 1 | Adult | vc57_danes_bc_data |
| Dovedale | SK15K | 01/08/2011 | 1 | Adult | vc57_danes_bc_data |
| Dovedale | SK15K | 30/07/2010 | 2 | Adult | vc57_danes_bc_data |
| Biggin Dale, nr Hartington | SK15P | 12/06/2010 | 1 | Adult | vc57_danes_bc_data |
| Biggin Dale, nr Hartington | SK15P | 12/06/2010 | 1 | Adult | vc57_danes_bc_data |
| Calke Park,Ticknall | SK32L | 02/06/2009 | 1 | Adult | vc57_danes_bc_data |
| Calke Park, Lime avenue | SK32L | 06/06/2008 | 3 | adult | vc57_irecords_extract |
| Calke Park,Ticknall | SK32L | 06/06/2008 | 3 | Adult | vc57_danes_bc_data |
| Robin Wood | SK32M | 25/08/2006 | 1 | Adult | vc57_irecords_extract |
| Robin Wood (centre area track), Ticknall | SK32M | 25/08/2006 | 1 | Adult | vc57_danes_bc_data |
| Mousley Bottom, New Mills | SJ98X | 18/08/2006 | 1 | Adult | vc57_danes_bc_data |
| Main Street, Kings Newton | SK32Y | 27/06/2005 | 1 | Adult | vc57_irecords_extract |
| Main St,Kings Newton,Melbourne | SK32Y | 27/06/2005 | 1 | Adult | vc57_danes_bc_data |
| Edgecote Drive,Newhall,Swadlincote | SK22V | 29/07/2004 | 1 | Adult | vc57_danes_bc_data |
| Calke Park Whimsey Field | SK32R | 05/08/2003 | 1 | Adult | vc57_irecords_extract |
| Longshaw Est, Padley Gorge | SK28K | 22/08/2003 | 1 | Adult | vc57_danes_bc_data |
| Chunnal Moor, Glossop | SK09G | 24/08/2003 | 1 | Adult | vc57_danes_bc_data |
| Hilton GP | SK23K | 23/08/1994 | 1 | Adult | vc57_danes_bc_data |