49.114 BF941 – Lesser Marbled Straw – Aethes hartmanniana – (Clerck, 1759)
Adult Micro: CAT 3 – Very rare or scarce species (includes very scarce adventives/immigrants) – 
– click for General Verification Guidelines | – click for Specific Verification Guidelines
– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Significant Record / Very Rare / Vagrant
– care required in the identification process, as confusion with similar species is likely – quality photographs required. Confusion Species: A. piercei
ID pointers: Holds forewings at rest in a “Tent-like” fashion. A prominent central cross-band of bright brick-red chestnut, bordered either-side with white cross-bands. Overall forewing is pale brownish yellow, with orangey-brown or reddish-brown markings.
Distribution: (First record: 1 July 2017 at Pin Dale, Castleton ) – (Last record: 2 June 2025 at Gang Mine / Chee Dale ) – A rare species in the county, that is easily confused with A.piercei.(size is very important). Found on Small Scabious & Field Scabious in Limestone areas. There is one old very dubious record that was probably A.piercei, so this record by Ben Smart is potentially a first record for VC57 & Derbyshire. Clive Ashton recorded one on 21st May and 2 on 2nd June 2025 from Gang Mine, and Ian White recorded one from Chee Dale on 2nd June – 3rd,4th & 5th VC57 records.
General Comment: None *** Last updated on 2 October 2025 by RP ***
Last Recorded Year: 2025
First Recorded Year: 2017
Last Recorded By – Ian White, Clive Ashton
Last Recorded General Area – Gang Mine / Chee Dale
Selected Images: Pin Dale, Castleton, Derbyshire – Ben Smart© / May 2025 Gang Mine- Clive Ashton©/ Chee Dale June 2025 – Ian White© / Gang Mine June 2025 – Clive Ashton©
Image Gallery
Temporal Distribution Chart
Adults: (between 2004 - 2025)
(click legend below to show/hide datasets)
Distribution Map for Aethes hartmanniana
Found 7 records
↳ from 2026+
↳ 6 from 2020 - 2025
↳ 1 from Before 2020
↳ from 2026+
↳ 6 from 2020 - 2025
↳ 1 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 – Aethes hartmanniana
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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.
Monthly Records By Year:
Aethes hartmanniana
( data includes both Larvae and Adult Stages )
Monthly Counts By Year:
Aethes hartmanniana
( data is based on 'Adult' stage records only )
First/Last Recorded Dates: Aethes hartmanniana
Adult-only & Anything [Larvae, Pupae, Adult, Mines]
Shading shows moth presence between dates
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Recordings By Year: Aethes hartmanniana
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Aethes hartmanniana
AGR: -4.27% | Total % Change: -60%
Hectad (10kmx10km) Coverage: Aethes hartmanniana
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Aethes hartmanniana
Aethes hartmanniana
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 - Aethes hartmanniana – 7 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Recorder | Source | RecordKey |
|---|---|---|---|---|---|---|---|
| Gang Mine, Cromford | SK25X | 23/06/2025 | 2 | adult | Ashton, Clive | vc57_irecords_extract | iBRC42573628 |
| Gang Mine NR, Cromford. | SK25X | 11/06/2025 | 1 | adult | Evans, Dave | vc57_irecords_extract | iBRC42267828 |
| Gang Mine, Cromford | SK25X | 02/06/2025 | 3 | adult | Ashton, Clive | vc57_irecords_extract | iBRC42019445 |
| Chee Dale (Mosley Farm bank) | SK17B | 02/06/2025 | 1 | adult | White, Ian | vc57_irecords_extract | iBRC42023171 |
| Gang Mine, Cromford | SK25X | 21/05/2025 | 1 | adult | Ashton, Clive | vc57_irecords_extract | iBRC41733026 |
| Ferneydale (Grazed) | SK07Q | 13/06/2021 | 1 | adult | Wakefield, Rowan | vc57_irecords_extract | iBRC43076669 |
| Bonsall Moor | SK25T | 01/06/2004 | 4 | Adult | B.L. Statham | vc57_danes_bc_data | LC000334001CP1OZ |