73.307 BF2119 – Pearly Underwing – Peridroma saucia – (Hübner, 1808)
Adult Macro: CAT 2 – Can be confused with other species – Good photographs maybe required – 
– click for Adult Macro Verification Guidelines
– 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.
General Comment: None *** 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
Temporal Distribution Chart
Adults: (between 1904 - 2025)
(click legend below to show/hide datasets)
Distribution Map for Peridroma saucia
Found 48 records
↳ from 2026+
↳ 10 from 2020 - 2025
↳ 38 from Before 2020
↳ from 2026+
↳ 10 from 2020 - 2025
↳ 38 from Before 2020
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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%
Hectad (10kmx10km) Coverage: Peridroma saucia
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Peridroma saucia
Peridroma saucia
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 2020-2026.
Records Behind the Map and Charts - Peridroma saucia – 48 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Recorder | Source | RecordKey |
|---|---|---|---|---|---|---|---|
| Hathersage | SK28F | 07/10/2025 | 1 | adult | Kydd, Alan | vc57_irecords_extract | iBRC45981191 |
| Waingroves Community Woodland | SK44E | 16/08/2025 | 1 | adult | Milnes, Emily | vc57_irecords_extract | iBRC48440070 |
| Belper | SK34N | 06/08/2025 | 1 | adult | Evans, Dave | vc57_irecords_extract | iBRC44244868 |
| Shirland - Hallfieldgate Lane | SK35Z | 22/09/2023 | 1 | Adult | Mahadevan, Nikki | vc57_irecords_extract | iBRC34435638 |
| Mickleover garden | SK33C | 27/08/2023 | 1 | adult | Maughan, Christine | vc57_irecords_extract | iBRC35946846 |
| Birch Vale | SK08I | 23/10/2022 | 1 | adult | Hewitt, Jane | vc57_irecords_extract | iBRC34092742 |
| Main Street, Kings Newton | SK32Y | 14/09/2022 | 1 | Adult | Soar, Will | vc57_irecords_extract | iBRC34062684 |
| Buxton SK, UK | SK07S | 12/09/2022 | 1 | Adult | Orridge, Steve | vc57_irecords_extract | iBRC28806752 |
| Ladycroft Ave, Buxton | SK07S | 11/09/2022 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC35091008 |
| Not given | SK33T | 27/08/2020 | 1 | Adult | Tester, Thea | vc57_irecords_extract | iBRC17726332 |
| Ladycroft Ave | SK07S | 06/10/2013 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC40991821 |
| Repton (site not precise) | SK32B | 03/10/2013 | 2 | Adult | H.C. Hayward | vc57_danes_bc_data | LC000334001WP48D |
| The Hollies,Station Rd,Darley Dale | SK26R | 05/10/2006 | 1 | Adult | Roddis, Simon | vc57_danes_bc_data | LC000334001OHURF |
| Ault Hucknall,Glapwell | SK46S | 23/09/2006 | 2 | Adult | M.E. Bradley | vc57_danes_bc_data | LC000334001OHUP4 |
| Wood Lane,Newhall,Swadlincote | SK22V | 17/09/2006 | 1 | Adult | Dave Budworth | vc57_danes_bc_data | LC000334001OHUMB |
| Wood Lane, Newhall, Swadlincote | SK22V | 17/09/2006 | 1 | Adult | Dave Budworth | vc57_danes_bc_data | LC000334001WPFO5 |
| Poolsbrook, Staveley (site not precise) | SK47G | 24/10/2004 | 1 | Adult | S. Hooke | vc57_danes_bc_data | LC000334001WPFEV |
| Deerlands Rd, Ashgate, Chesterfield | SK37K | 10/09/1996 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OI2UM |
| Deerlands Rd, Ashgate, Chesterfield | SK37K | 10/09/1996 | 1 | Adult | B. Elliott | vc57_danes_bc_data | LC000334001WP5QR |
| Wilmot St,Long Eaton | SK43R | 01/09/1995 | 1 | Adult | B.G. Sewell | vc57_danes_bc_data | LC000334001OI2II |
| Lang Rd, Alvaston, Derby | SK33R | 14/09/1992 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OIWOL |
| Pond House, Mapperley Res, Ilkeston | SK44G | 10/10/1991 | 1 | Adult | T. Duro | vc57_danes_bc_data | LC000334001OIVRZ |
| Pond House, Mapperley Res, Ilkeston | SK44G | 10/10/1991 | 1 | Adult | T. Duro | vc57_danes_bc_data | LC000334001WPEDM |
| Far Cross,Cavendish Park,Matlock | SK36A | 11/10/1988 | 1 | Adult | B.L. Statham | vc57_danes_bc_data | LC000334001OJHY8 |
| Far Cross,Cavendish Park,Matlock | SK36A | 11/10/1988 | 1 | Adult | B.L. Statham | vc57_danes_bc_data | LC000334001WPWWH |
| Meadow Rise, Simmondley, Glossop | SK09B | 08/08/1988 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OI086 |
| Barnard Ave, Coal Aston | SK37U | 01/01/1981 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OHHAL |
| Barnard Ave, Coal Aston | SK37U | 01/01/1981 | 1 | Adult | A. Mclean | vc57_danes_bc_data | LC000334001WP94K |
| Threepieces, Veron Lane, Kelstedge, Ashover | SK36G | 03/10/1979 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OIM06 |
| Welbeck Rd, Bolsover | SK47V | 20/09/1969 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OIHPY |
| Newbold Drive, Chesterfield | SK37R | 13/08/1969 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OIDPG |
| Berry St, Hepthorne Lane, North Wingfield | SK46C | 09/08/1967 | 1 | Adult | J.H. Johnson | vc57_danes_bc_data | LC000334001WQ9DI |
| Newbold Drive, Chesterfield | SK37R | 05/10/1965 | 2 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OIHDF |
| Newbold Ave, Chesterfield | SK37R | 02/09/1959 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OIGFZ |
| Newbold Ave, Chesterfield | SK37R | 02/10/1958 | 3 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OIFUW |
| Repton (site not precise) | SK32B | 05/10/1931 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OIDA7 |
| Repton (site not precise) | SK32B | 05/10/1931 | 1 | Adult | H.C. Hayward | vc57_danes_bc_data | LC000334001WOQLT |
| Tibshelf (site not precise) | SK46K | 01/01/1923 | 1 | Adult | [VC57 Recorder] | vc57_danes_bc_data | LC000334001TAGKP |
| Repton (site not precise) | SK32B | 01/01/1919 | 1 | Adult | [VC57 Recorder] | vc57_danes_bc_data | LC000334001TAGE5 |
| Repton (site not precise) | SK32B | 01/01/1919 | 1 | Adult | A.P. Wilson;H.C. Hayward | vc57_danes_bc_data | LC000334001WOSJU |
| Repton (site not precise) | SK32B | 03/10/1913 | 2 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OID6L |
| Repton (site not precise) | SK32B | 01/01/1905 | 2 | Adult | [VC57 Recorder] | vc57_danes_bc_data | LC000334001TAGDS |
| Repton (site not precise) | SK32B | 01/01/1905 | 2 | Adult | H.C. Hayward | vc57_danes_bc_data | LC000334001WPZ9R |
| Poolsbrook, Staveley (site not precise) | SK47G | 24/10/1904 | 1 | Adult | S. Hooke | vc57_danes_bc_data | LC000334001OICZS |
| Willington (Potlock Covert), Derby | SK32E | 01/01/1866 | 1 | Adult | F.M. Spilsbury | vc57_danes_bc_data | LC000334001WPU39 |
| Somersal Herbert (site not precise) | SK13H | 01/01/1863 | 1 | Adult | [VC57 Recorder] | vc57_danes_bc_data | LC000334001TAG7Z |
| Somersal Herbert (site not precise) | SK13H | 01/01/1863 | 1 | Adult | E. Brown | vc57_danes_bc_data | LC000334001WPU2N |
| Willington (Potlock Covert), Derby | SK32E | 01/01/1800 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001OLFFI |