Black Arches - Erebidae - Lymantria monacha
72.010 BF2033  – Black Arches  – Lymantria monacha  –  (Linnaeus, 1758)
Adult Macro:  CAT 1 – Distinctive species unlikely to be confused with others –      
PDF Icon – click for Adult Macro Verification Guidelines

Green –  Rare / Uncommon / Scarce   
Taxonomy:   Macro  >>.  >>  Erebidae  >> Xyleninae
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: A fairly distinctive all white moth with numerous black jagged marks, cross-lines & patterning across the wings, with pink bands on the abdomen. A bold black central crescent in the forewing which is where the moth gets its name.
Distribution:  (First record: 1 August 1977 at Matlock )  –  (Last record: 18 August 2024 at Elvaston )  –  First record from Matlock in 1977.Another one trapped in Matlock in 2001 and then one at Robin Wood in South Derbyshire in 2008 and one at Darley Dale in 2009. Next record was one at Kings Newton 21st August 2013. Since, this moth has now been recorded, in small numbers, from a wide range of sites, particularly across the south of the county.
General Comment: None
Flight Period: July /  August –  On the wing July – August Moth Activity: Nocturnal  Photographed: Yes –  Photographed By: Tony Davison, Stephen Plant, Dave Evans  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 30-50mm
Forewing: 18-28mm
Food Plant: Oak (Quercus), but sometimes on coniferous trees.
Last Recorded Year: 2024
First Recorded Year: 1977
Last Recorded By – Marion Bryce
Last Recorded General Area – Elvaston

Selected Images:  Kings Newton, Derbyshire – Tony Davison © – Allestree – Stephen Plant © / Belper (2024)  – Dave Evans



Temporal Distribution Chart
Adults: (between 1977 - 2025)
(click legend below to show/hide datasets)

Distribution Map for Lymantria monacha

Found 62 records
    ↳ from 2026+
    ↳ 53 from 2020 - 2025
    ↳ 9 from Before 2020
Flying
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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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 – Lymantria monacha

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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.

Visit NBN Site


Monthly Records By Year: Lymantria monacha
( data includes both Larvae and Adult Stages )

Monthly Counts By Year: Lymantria monacha
( data is based on 'Adult' stage records only )

First/Last Recorded Dates: Lymantria monacha
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: Lymantria monacha
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Lymantria monacha
AGR: 0.7%   |   Total % Change: 12.5%

Hectad (10kmx10km) Coverage: Lymantria monacha
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Lymantria monacha

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 - Lymantria monacha – 62 records available

Listed by Year - descending - scroll across to see all table columns

Site Name Tetrad Date Count Stage Recorder Source RecordKey
Belper SK34U 23/08/2025 1 adult Evans, Dave vc57_irecords_extract iBRC44731341
Inkersall garden SK47G 16/08/2025 1 adult Don Cambridge vc57_irecords_extract iBRC44511067
Belper, Derbyshire SK34N 13/08/2025 1 adult Newcombe, Dave vc57_irecords_extract iBRC44660419
Belper SK34U 13/08/2025 1 adult Evans, Dave vc57_irecords_extract iBRC44470839
Belper, Derbyshire SK34N 12/08/2025 1 adult Newcombe, Dave vc57_irecords_extract iBRC44660039
upper cromford garden SK25Y 31/07/2025 1 adult Ashton, Clive vc57_irecords_extract iBRC44090333
Belper, Derbyshire SK34N 27/07/2025 1 adult Newcombe, Dave vc57_irecords_extract iBRC44350546
Belper, Derbyshire SK34N 26/07/2025 1 adult Newcombe, Dave vc57_irecords_extract iBRC44350302
Jim Mart Nature Reserve SK36S 26/07/2025 1 adult Mahadevan, Nikki vc57_irecords_extract iBRC43885347
Findern, Derbyshire SK33A 25/07/2025 1 adult Hallam, Brian vc57_irecords_extract iBRC43836957
Chaddesden, Derby SK33T 22/07/2025 1 adult roome, martin vc57_irecords_extract iBRC44185440
Mickleover garden SK33C 18/07/2025 1 adult Maughan, Christine vc57_irecords_extract iBRC45111902
Belper, Derbyshire SK34N 18/07/2025 1 adult Newcombe, Dave vc57_irecords_extract iBRC44274274
Findern, Derbyshire SK33A 17/07/2025 1 adult Hallam, Brian vc57_irecords_extract iBRC43595127
Aston-on-Trent, Derbyshire SK43A 17/07/2025 1 adult Waldron, Robert vc57_irecords_extract iBRC43496331
Allestree, Derby, Elm Grove SK34K 16/07/2025 1 adult Grange, William vc57_irecords_extract iBRC51059156
Staveley garden SYA SK47H 16/07/2025 1 adult Radford, Mark vc57_irecords_extract iBRC43523347
Markham Vale South Tip Derbyshire SK47K 14/07/2025 3 adult Morris, Sid vc57_irecords_extract iBRC43443810
Findern, Derbyshire SK33A 13/07/2025 1 adult Hallam, Brian vc57_irecords_extract iBRC43447699
Findern, Derbyshire SK33A 11/07/2025 1 adult Hallam, Brian vc57_irecords_extract iBRC43445557
Staveley Derbyshire SK47H 11/07/2025 1 adult Morris, Sid vc57_irecords_extract iBRC43309062
Chesterfield Ambulance Station SK37K 10/07/2025 2 adult Jim Alder vc57_irecords_extract iBRC43201829
Darwin Forest SK26X 03/07/2025 1 adult Evans, Dave vc57_irecords_extract iBRC43019820
Darwin Forest SK26X 01/07/2025 1 adult Evans, Dave vc57_irecords_extract iBRC43018264
Clover Close, Elvaston SK43B 18/08/2024 4 adult Bryce, Marion vc57_irecords_extract iBRC37971396
Glapwell Garden Trap SK46T 16/08/2024 1 adult John Culpin vc57_irecords_extract iBRC40549834
Darley Bridge SK26Q 14/08/2024 1 Adult Moores, Stephen vc57_irecords_extract iBRC37893614
Old Park Plantation, Chatsworth SK26U 12/08/2024 1 Adult Moores, Stephen vc57_irecords_extract iBRC37846899
Markham Vale Derbyshire SK47K 12/08/2024 2 adult Morris, Sid vc57_irecords_extract iBRC37881344
Chaddesden, Derby SK33T 10/08/2024 1 adult roome, martin vc57_irecords_extract iBRC38337403
upper cromford garden SK25Y 09/08/2024 1 adult Ashton, Clive vc57_irecords_extract iBRC37792913
Inkersall garden SK47G 08/08/2024 2 adult Don Cambridge vc57_irecords_extract iBRC37741857
Glapwell Garden Trap SK46T 03/08/2024 2 adult John Culpin vc57_irecords_extract iBRC40549778
Belper SK34N 01/08/2024 1 adult Evans, Dave vc57_irecords_extract iBRC37620944
King's Newton SK32Y 29/07/2024 1 adult Soar, Will vc57_irecords_extract iBRC40386687
Belper SK34N 29/07/2024 1 adult Evans, Dave vc57_irecords_extract iBRC37494976
Clover Close, Elvaston SK43B 29/07/2024 6 adult Bryce, Marion vc57_irecords_extract iBRC38104413
Ilkeston, Derbyshire SK44K 28/07/2024 1 adult Hobby, Brian vc57_irecords_extract iBRC37608990
Markham Vale Derbyshire SK47L 25/07/2024 1 adult Morris, Sid vc57_irecords_extract iBRC37377686
Allestree, Derby SK33P 24/07/2024 1 adult Plant, Stephen vc57_irecords_extract iBRC37288808
Allestree, Derby SK33P 24/07/2024 1 adult Plant, Stephen vc57_irecords_extract iBRC40186796
Drakelow, Derbys. SK22F 22/07/2024 2 adult Williams, Michael vc57_irecords_extract iBRC39954316
Staunton Harold Reservoir, Derbyshire SK32S 15/08/2023 1 adult Davison, Tony vc57_irecords_extract iBRC33088266
Findern Garden SK33A 11/08/2023 1 Adult Hallam, Brian vc57_irecords_extract iBRC34638039
Findern Garden SK33A 10/08/2023 2 Adult Hallam, Brian vc57_irecords_extract iBRC34637976
Belper SK34U 10/08/2023 2 adult Evans, Dave vc57_irecords_extract iBRC35297164
Chesterfield Ambulance Station SK37K 03/08/2023 2 adult Alder, Jim vc57_irecords_extract iBRC32131503
Rosliston Forestry Centre, Swadlincote, Derbys. SK21N 28/07/2023 2 adult Russell Nevin vc57_irecords_extract iBRC40094744
Allestree, Derby SK33P 29/07/2022 1 adult Plant, Stephen vc57_irecords_extract iBRC48237908
EA depot SK43G 27/07/2022 1 adult Collins, Stuart vc57_irecords_extract iBRC28766737
Orchid Wood SK43L 21/07/2022 1 adult Bryce, Marion vc57_irecords_extract iBRC37249922
Findern, Derbyshire, DEAZ SK33A 18/07/2022 1 adult Brian and Jean Hallam vc57_irecords_extract iBRC35167251
Drakelow CP, Swadlincote, England, GB SK21N 03/08/2021 1 Adult tonybayliss2000 vc57_irecords_extract iBRC22856143
Main Street, Kings Newton SK32Y 17/07/2018 1 Adult Soar, Will vc57_irecords_extract iBRC34061917
Wood Lane, Newhall, Swadlincotes SK22V 04/08/2017 1 Adult Dave Budworth vc57_danes_bc_data LC000334001WP7LW
garden SK32R 29/07/2016 1 adult Thornhill, Alison vc57_irecords_extract iBRC5598910
Main Street, Kings Newton SK32Y 21/08/2013 1 Adult Soar, Will vc57_irecords_extract iBRC34678693
The Hollies,Station Rd,Darley Dale SK26R 08/08/2009 1 Adult Roddis, Simon vc57_danes_bc_data LC000334001OKPH0
Robin Wood SK32M 05/08/2008 1 Adult Soar, Will vc57_irecords_extract iBRC34678692
Robin Wood (central area) SK32M 04/08/2008 1 Adult Dave Budworth;P. Patrick;W. Soar vc57_danes_bc_data LC000334001OJKXZ
Robin Wood (central area) SK32M 04/08/2008 1 Adult Dave Budworth;P. Patrick;W. Soar vc57_danes_bc_data LC000334001WOVVQ
Wolds Rise, Cavendish Rd, Matlock SK36A 01/08/1977 1 Adult B.L. Statham vc57_danes_bc_data LC000334001OIKL7

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