Leaf-miner: CAT A – Recorded accepted without the leaf or a photo – Larval Case: C1 – Distinctive Species – 
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– Uncertain/Unknown – Insufficient Data 
– Leaf-miner
– difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.Confusion Species: Ectoedemia heringi, Ectoedemia albifasciella
ID pointers: Adults are quite distinctive, with two creamy spots and a creamy basal patch on a violet-tinged blackish forewing. Similar to E.herengi.
Distribution: (Last record: 13 November 2025 at Thornsett, Sett Valley ) – Uncertain due to insufficient data. Leaf mines discovered at Markham Vale, Sett Valley and Longdendale in 2025. Most likely the species is overlooked.
General Comment: Notes on images by Christian Heintzen, on Oak Quercus robur in green sector of fallen leaf (A), long narrow corridor along midrib (a) followed by full depth blotch in vein axil (B), long slit along leaf vein on underside of leaf mine (b).
Mine Period Additional: None.
Mine ID Difficulty:
– Easy to identify, generally the leaf mine is distinctive and unlikely to be confused with other species. Mine Type/s: Gallery, Blotch
Mine Feeding Method/s: Case
Mine Comment: Larvae mine the leaves of Oak, initially in a long narrow gallery following a vein along midrib, then creating a triangular blotch between vein and midrib. It can be distinguished from the similar mines of E. heringi by the presence of a slit in the lower epidermis which allows frass and water to pass.
*** Last updated on 8 December 2025 by RP ***
Last Recorded Year: 2025
Last Recorded By – Christian Heintzen
Last Recorded General Area – Thornsett, Sett Valley
Selected Images:
Markham Vale – 27/10/2025 – Mark Radford© / Longdendale 12/11/2025 and Sett Valley 13/11/2025 – Christian Heintzen©
Image Gallery
Occurrence Distribution From All Available Data (Adult & Immature)
(click legend below to show/hide datasets)
Distribution Map for Ectoedemia subbimaculella
Found 4 records
↳ from 2026+
↳ 3 from 2020 - 2025
↳ 1 from Before 2020
↳ from 2026+
↳ 3 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 – Ectoedemia subbimaculella
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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:
Ectoedemia subbimaculella
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Ectoedemia subbimaculella
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Ectoedemia subbimaculella
Adult-only & Anything [Larvae, Pupae, Adult, Mines]
Shading shows moth presence between dates
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Recordings By Year: Ectoedemia subbimaculella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Ectoedemia subbimaculella
AGR: 2.15% | Total % Change: 66.7%
Hectad (10kmx10km) Coverage: Ectoedemia subbimaculella
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Ectoedemia subbimaculella
Ectoedemia subbimaculella
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.
Mine Periods – Indicative –vs– Recorded Data
Ectoedemia subbimaculella
Ectoedemia subbimaculella
( data includes both Larvae and Adult Stages )
Mine 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 mine periods [month/s]. The coloured lines represent the actual months seen mining, from site observation records received between 2020-2026.
Records Behind the Map and Charts - Ectoedemia subbimaculella – 4 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Thornsett, Sett Valley | SK08D | 13/11/2025 | 1 | Leaf-mine | vc57_irecords_extract |
| Longdendale, Torside Clough | SK09T | 12/11/2025 | 1 | Leaf-mine | vc57_irecords_extract |
| Markham Vale North Tip | SK47L | 27/10/2025 | 3 | mine | vc57_irecords_extract |
| Brackley Gate, nr Coxbench | SK34W | 03/11/2001 | 1 | Larval Mine | vc57_danes_bc_data |