49.266 BF1200 – Common Knapweed Tortrix – Eucosma hohenwartiana – (Denis & Schiffermüller, 1775)
Adult Micro: CAT 2 – Can be confused with other species – Leaf-miner: CAT A – Recorded accepted without the leaf or a photo – Larval Case: C1 – Distinctive Species –
– click for General Verification Guidelines | – click for Specific Verification Guidelines
– 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: E. cana
ID pointers: Forewing greyish-brown to reddish-brown, with pale brownish white, often along the costa. A pale greyish white or brownish-white dorsal blotch.
Distribution: (Last record: 15 June 2025 at Cromford ) – Uncertain – Likely to be widespread and locally common where there are knapweeds. A scattering of records across the county.
General Comment: None *** Last updated on 7 November 2025 by TD ***
Last Recorded Year: 2025
Last Recorded By – Clive Ashton
Last Recorded General Area – Cromford
Selected Images: Buxton, Derbyshire – Steve Orridge© / Jim Mart NR – Nikki Mahadevan© / Cromford (2025) Clive Ashton©
Image Gallery
No gallery images found for this moth.
Temporal Distribution Chart
Adults: (between 1994 - 2025)
(click legend below to show/hide datasets)
This chart summarises all available historical occurrence records collated by ISO week of the year. It reflects recorder effort and sampling distribution as well as true biological activity, and should be interpreted as an indicative pattern of seasonal occurrence rather than a statistically controlled abundance or phenology model.
Distribution Map for Eucosma hohenwartiana
Found 50 records
↳ from 2026+
↳ 15 from 2020 - 2025
↳ 35 from Before 2020
↳ from 2026+
↳ 15 from 2020 - 2025
↳ 35 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 – Eucosma hohenwartiana
⚠️ 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:
Eucosma hohenwartiana
( data includes both Larvae and Adult Stages )
Monthly Counts By Year:
Eucosma hohenwartiana
( data is based on 'Adult' stage records only )
First/Last Recorded Dates: Eucosma hohenwartiana
Adult-only & Anything [Larvae, Pupae, Adult, Mines]
Shading shows moth presence between dates
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Recordings By Year: Eucosma hohenwartiana
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Eucosma hohenwartiana
AGR: -0.86% | Total % Change: -16.7%
Hectad (10kmx10km) Coverage: Eucosma hohenwartiana
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Eucosma hohenwartiana
Eucosma hohenwartiana
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 - Eucosma hohenwartiana – 50 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Recorder | Source | RecordKey |
|---|---|---|---|---|---|---|---|
| sheffield | SK38K | 25/07/2025 | 2 | adult | Turner, Jan | vc57_irecords_extract | iBRC43914549 |
| Markham Vale South Tip | SK47K | 17/07/2025 | 2 | adult | Radford, Mark | vc57_irecords_extract | iBRC43666410 |
| Staveley garden SYA | SK47H | 16/07/2025 | 1 | adult | Radford, Mark | vc57_irecords_extract | iBRC43523380 |
| Coombs Dale | SK27C | 29/07/2024 | 1 | adult | Soar, Will | vc57_irecords_extract | iBRC40386771 |
| Inkersall garden | SK47G | 27/07/2024 | 1 | adult | Cambridge, Don | vc57_irecords_extract | iBRC37376184 |
| Greenfields Buxworth | SK08G | 08/07/2024 | 2 | adult | A.Seymour | vc57_irecords_extract | iBRC39767755 |
| upper cromford garden | SK25Y | 26/06/2024 | 1 | adult | Ashton, Clive | vc57_irecords_extract | iBRC36695820 |
| Markham Vale Derbyshire | SK47L | 05/07/2023 | 1 | adult | Morris, Sid | vc57_irecords_extract | iBRC31380611 |
| Ladycroft Ave, Buxton | SK07S | 28/06/2023 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC35077160 |
| Jim Mart Nature Reserve | SK36S | 24/06/2023 | 1 | Adult | Mahadevan, Nikki | vc57_irecords_extract | iBRC34929872 |
| Meynell Langley | SK23Z | 02/07/2022 | 1 | adult | Bryce, Marion | vc57_irecords_extract | iBRC26199135 |
| UK, Derbyshire, Lathkill Dale | SK16T | 01/07/2022 | 1 | adult | Miles, Claire | vc57_irecords_extract | iBRC28644983 |
| Hathersage, Derbyshire, UK | SK28F | 02/07/2021 | 2 | adult | Miles, Claire | vc57_irecords_extract | iBRC29737612 |
| Etherow CP () | SJ99Q | 20/07/2020 | 2 | Adult | Higginson-Tranter, Dave | vc57_irecords_extract | iBRC15260397 |
| Waterswallows Quarry | SK07X | 17/07/2020 | 1 | Adult | Marriott, Antony | vc57_irecords_extract | iBRC15268946 |
| Hoe Grange Quarry | SK25I | 16/06/2018 | 1 | adult | Steve Orridge & Ray Walker | vc57_irecords_extract | iBRC49168491 |
| Locko Plantation, Pilsley | SK46G | 04/07/2016 | 1 | adult | Avison, Colin | vc57_irecords_extract | iBRC4417158 |
| Jim Mart Nature Reserve | SK36S | 22/07/2014 | 1 | Adult | Mahadevan, Nikki | vc57_irecords_extract | iBRC34906866 |
| Ladycroft Ave | SK07S | 02/08/2013 | 1 | adult | Orridge, Steve | vc57_irecords_extract | iBRC40991334 |
| Rowthorne Trail NR, Pleasley | SK46W | 21/07/2012 | 1 | Adult | K.R. Huston | vc57_danes_bc_data | LC000334001CP82S |
| Backgarden Marehay | SK34Z | 12/07/2012 | 1 | adult | Thorpe, Steve | vc57_irecords_extract | iBRC33510633 |
| Bamford St,Ripley | SK34Z | 12/07/2012 | 1 | Adult | Thorpe, Steve | vc57_danes_bc_data | LC000334001CP7ZJ |
| Dovedale | SK15K | 01/08/2011 | 2 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001CP7F1 |
| Dovedale | SK15K | 01/08/2011 | 1 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001CP9TP |
| Dovedale | SK15K | 11/07/2011 | 1 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001COTY1 |
| Biggin Dale, nr Hartington | SK15P | 28/07/2010 | 2 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001COTGQ |
| Biggin Dale, nr Hartington | SK15P | 28/07/2010 | 3 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001COTH5 |
| Biggin Dale, nr Hartington | SK15P | 28/07/2010 | 1 | Adult | C. Williams | vc57_danes_bc_data | LC000334001COXCK |
| Biggin Dale, nr Hartington | SK15P | 28/07/2010 | 4 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001CP66A |
| Biggin Dale, nr Hartington | SK15P | 28/07/2010 | 7 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001CP66R |
| Biggin Dale, nr Hartington | SK15P | 28/07/2010 | 1 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001CP677 |
| Milldale, Hartington | SK15M | 06/07/2010 | 9 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001CP5SM |
| Biggin Dale, nr Hartington | SK15P | 06/07/2010 | 32 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001COTA3 |
| Biggin Dale, nr Hartington | SK15P | 06/07/2010 | 21 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001COTAG |
| Biggin Dale, nr Hartington | SK15P | 06/07/2010 | 23 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001COTAQ |
| Biggin Dale, nr Hartington | SK15P | 06/07/2010 | 16 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001COTAY |
| Biggin Dale, nr Hartington | SK15P | 06/07/2010 | 21 | Adult | D. Grundy | vc57_danes_bc_data | LC000334001CP5RR |
| Biggin Dale, nr Hartington | SK15P | 06/07/2010 | 10 | Adult | C. Williams | vc57_danes_bc_data | LC000334001CP5SC |
| Dovedale | SK15K | 05/07/2009 | 1 | Adult | D. Grundy;M.J. Dale | vc57_danes_bc_data | LC000334001COWSF |
| Dovedale | SK15K | 05/07/2009 | 1 | Adult | D. Grundy;M.J. Dale | vc57_danes_bc_data | LC000334001CP013 |
| Dovedale | SK15K | 14/06/2009 | 1 | Adult | M.J. Dale | vc57_danes_bc_data | LC000334001COSQM |
| Melbourne, Derbyshire | SK32X | 22/07/2007 | 1 | adult | Davison, Tony | vc57_irecords_extract | iBRC33405310 |
| Spinney Hill,Melbourne | SK32X | 22/07/2007 | 1 | Adult | Davison, Tony | vc57_danes_bc_data | LC000334001CP3ZG |
| Church St,Holloway,Matlock | SK35I | 17/07/2005 | 1 | Adult | F. Harrison | vc57_danes_bc_data | LC000334001CP2QK |
| Bonsall Moor | SK25T | 19/07/2004 | 2 | Adult | B.L. Statham | vc57_danes_bc_data | LC000334001CP20W |
| Dowey Lumb NR, Dronfield | SK38Q | 25/07/1997 | 1 | Adult | H.E. Beaumont;R.F. Botterill | vc57_danes_bc_data | LC000334001COQY2 |
| Cunning Dale, Buxton (site not precise) | SK07W | 07/07/1997 | 1 | Adult | I.F. Smith | vc57_danes_bc_data | LC000334001COZ1S |
| The Shimmers, Cressbrook, Buxton | SK17R | 20/07/1996 | 1 | Adult | R.F. Botterill | vc57_danes_bc_data | LC000334001COQW6 |
| Cressbrook Dale, Little Longstone | SK17R | 20/07/1996 | 1 | Adult | S.H. Hind | vc57_danes_bc_data | LC000334001CP1AP |
| Rowsley Sidings, Rowsley (site not precise) | SK26S | 04/07/1994 | 1 | Adult | VC57 Derbyshire Recorder | vc57_danes_bc_data | LC000334001CP13K |