Larval Case: C1 – Distinctive Species – 
– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Uncertain/Unknown – Insufficient Data 
– Leaf-miner
– care required in the identification process, as confusion with similar species is likely – quality photographs required. Confusion Species: Etainia decentella
Mine Period Additional: The larvae mine the leaves of poplars and the mine usually starts with a narrow black central line of frasse
Mine ID Difficulty: Not Recorded
Mine Type/s: Not Recorded
Mine Feeding Method/s: Not Recorded
Mine Comment: None.
Sinfin – Andrew-John Shervill© / Alvaston Park 1/11/2025 – Andrew John Shervill©
Image Gallery
Occurrence Distribution From All Available Data (Adult & Immature)
Distribution Map for Stigmella trimaculella
↳ from 2026+
↳ 5 from 2020 - 2025
↳ 2 from Before 2020
If the Map Layers function fails, just refresh the page and it should be OK after. Use the +- zoom on the top left, or on a tablet, use two fingers to zoom. Remember, the last layer you ticked is the one which displays the popup information - they sit on top of each other - de-select then re-select, to see the popup values.
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 – Stigmella trimaculella
⚠️ 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:
Stigmella trimaculella
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Stigmella trimaculella
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Stigmella trimaculella
Adult-only & Anything [Larvae, Pupae, Adult, Mines]
Shading shows moth presence between dates
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Recordings By Year: Stigmella trimaculella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Stigmella trimaculella
AGR: 2.48% | Total % Change: 80%
Hectad (10kmx10km) Coverage: Stigmella trimaculella
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Stigmella trimaculella
Stigmella trimaculella
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
Stigmella trimaculella
Stigmella trimaculella
( 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 - Stigmella trimaculella – 7 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Alvaston Park | SK33S | 01/11/2025 | 1 | mine | vc57_irecords_extract |
| Markham Vale Hall Lane Pond | SK47H | 04/10/2025 | 1 | mine | vc57_irecords_extract |
| Sinfin LNR | SK33K | 24/08/2025 | 3 | mine | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 13/08/2025 | 1 | mine (empty) | vc57_irecords_extract |
| DWT Wyver Lane | SK34P | 06/08/2025 | 3 | mine (empty) | vc57_irecords_extract |
| Cubley, nr Ashbourne | SK13U | 04/10/2001 | 1 | Larval Mine | vc57_danes_bc_data |
| Newbold Ave, Chesterfield | SK37R | 04/09/1976 | 15 | Larval Mine | vc57_danes_bc_data |