– click for Adult Macro Verification Guidelines
– Rare / Uncommon / Scarce 
– Migrant
– care required in the identification process, as confusion with similar species is likely – quality photographs required. Confusion Species: Turnip Moth
ID pointers: The moth gets its name from the semi-translucent hind wings, which give the appearance of a pearly sheen. The upper-wing is very variable in a mixed range of colours of purple, grey, brown and cream. Has a characteristic pale median thoracic crest and white basal wing spots.
Distribution: (Last record: 7 October 2025 at Hathersage ) – An uncommon migrant, recorded infrequently.
*** Last updated on 8 October 2025 by TD ***
Forewing: 19-23mm
Last Recorded Year: 2025
Last Recorded By – Alan Kydd
Last Recorded General Area – Hathersage
Selected Images: Mickleover – Christine Maughan© – 27th August 2023 / Breaston -Steve Thorpe© -10th September 2022 and Derbyshire DE22 – by Andrew Watson©
Image Gallery
Distribution Map for Peridroma saucia
Found 46 records
↳ 1 from After 2025
↳ 7 from 2020 - 2024
↳ 38 from Before 2020
↳ 1 from After 2025
↳ 7 from 2020 - 2024
↳ 38 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 – Peridroma saucia
⚠️ 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:
Peridroma saucia
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Peridroma saucia
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Peridroma saucia
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: Peridroma saucia
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Peridroma saucia
AGR: 0% | Total % Change: 0%
CUSUM Analysis: Peridroma saucia
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 2013, reaching above average levels. The lowest population point occurred near 2023, 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: Peridroma saucia
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Peridroma saucia
Peridroma saucia
( 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 - Peridroma saucia – 46 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Belper | SK34N | 06/08/2025 | 1 | adult | vc57_irecords_extract |
| Shirland - Hallfieldgate Lane | SK35Z | 22/09/2023 | 1 | Adult | vc57_irecords_extract |
| Mickleover garden | SK33C | 27/08/2023 | 1 | adult | vc57_irecords_extract |
| Birch Vale | SK08I | 23/10/2022 | 1 | adult | vc57_irecords_extract |
| Buxton SK, UK | SK07S | 12/09/2022 | 1 | Adult | vc57_irecords_extract |
| Main Street, Kings Newton | SK32Y | 14/09/2022 | 1 | Adult | vc57_irecords_extract |
| Ladycroft Ave, Buxton | SK07S | 11/09/2022 | 1 | adult | vc57_irecords_extract |
| Not given | SK33T | 27/08/2020 | 1 | Adult | vc57_irecords_extract |
| Ladycroft Ave | SK07S | 06/10/2013 | 1 | adult | vc57_irecords_extract |
| Repton (site not precise) | SK32B | 03/10/2013 | 2 | Adult | vc57_danes_bc_data |
| The Hollies,Station Rd,Darley Dale | SK26R | 05/10/2006 | 1 | Adult | vc57_danes_bc_data |
| Wood Lane,Newhall,Swadlincote | SK22V | 17/09/2006 | 1 | Adult | vc57_danes_bc_data |
| Ault Hucknall,Glapwell | SK46S | 23/09/2006 | 2 | Adult | vc57_danes_bc_data |
| Wood Lane, Newhall, Swadlincote | SK22V | 17/09/2006 | 1 | Adult | vc57_danes_bc_data |
| Poolsbrook, Staveley (site not precise) | SK47G | 24/10/2004 | 1 | Adult | vc57_danes_bc_data |
| Deerlands Rd, Ashgate, Chesterfield | SK37K | 10/09/1996 | 1 | Adult | vc57_danes_bc_data |
| Deerlands Rd, Ashgate, Chesterfield | SK37K | 10/09/1996 | 1 | Adult | vc57_danes_bc_data |
| Wilmot St,Long Eaton | SK43R | 01/09/1995 | 1 | Adult | vc57_danes_bc_data |
| Lang Rd, Alvaston, Derby | SK33R | 14/09/1992 | 1 | Adult | vc57_danes_bc_data |
| Pond House, Mapperley Res, Ilkeston | SK44G | 10/10/1991 | 1 | Adult | vc57_danes_bc_data |
| Pond House, Mapperley Res, Ilkeston | SK44G | 10/10/1991 | 1 | Adult | vc57_danes_bc_data |
| Far Cross,Cavendish Park,Matlock | SK36A | 11/10/1988 | 1 | Adult | vc57_danes_bc_data |
| Far Cross,Cavendish Park,Matlock | SK36A | 11/10/1988 | 1 | Adult | vc57_danes_bc_data |
| Meadow Rise, Simmondley, Glossop | SK09B | 08/08/1988 | 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 |
| Threepieces, Veron Lane, Kelstedge, Ashover | SK36G | 03/10/1979 | 1 | Adult | vc57_danes_bc_data |
| Welbeck Rd, Bolsover | SK47V | 20/09/1969 | 1 | Adult | vc57_danes_bc_data |
| Newbold Drive, Chesterfield | SK37R | 13/08/1969 | 1 | Adult | vc57_danes_bc_data |
| Berry St, Hepthorne Lane, North Wingfield | SK46C | 09/08/1967 | 1 | Adult | vc57_danes_bc_data |
| Newbold Drive, Chesterfield | SK37R | 05/10/1965 | 2 | Adult | vc57_danes_bc_data |
| Newbold Ave, Chesterfield | SK37R | 02/09/1959 | 1 | Adult | vc57_danes_bc_data |
| Newbold Ave, Chesterfield | SK37R | 02/10/1958 | 3 | Adult | vc57_danes_bc_data |
| Repton (site not precise) | SK32B | 05/10/1931 | 1 | Adult | vc57_danes_bc_data |
| Repton (site not precise) | SK32B | 05/10/1931 | 1 | Adult | vc57_danes_bc_data |
| Tibshelf (site not precise) | SK46K | 01/01/1923 | 1 | Adult | vc57_danes_bc_data |
| Repton (site not precise) | SK32B | 01/01/1919 | 1 | Adult | vc57_danes_bc_data |
| Repton (site not precise) | SK32B | 01/01/1919 | 1 | Adult | vc57_danes_bc_data |
| Repton (site not precise) | SK32B | 03/10/1913 | 2 | Adult | vc57_danes_bc_data |
| Repton (site not precise) | SK32B | 01/01/1905 | 2 | Adult | vc57_danes_bc_data |
| Repton (site not precise) | SK32B | 01/01/1905 | 2 | Adult | vc57_danes_bc_data |
| Poolsbrook, Staveley (site not precise) | SK47G | 24/10/1904 | 1 | Adult | vc57_danes_bc_data |
| Willington (Potlock Covert), Derby | SK32E | 01/01/1866 | 1 | Adult | vc57_danes_bc_data |
| Somersal Herbert (site not precise) | SK13H | 01/01/1863 | 1 | Adult | vc57_danes_bc_data |
| Somersal Herbert (site not precise) | SK13H | 01/01/1863 | 1 | Adult | vc57_danes_bc_data |
| Willington (Potlock Covert), Derby | SK32E | 01/01/1800 | 1 | Adult | vc57_danes_bc_data |