Leaf-miner: CAT R – Moth will need to be reared and possibly dissected – Larval Case: C1 – Distinctive Species – 
– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Generally Common / Widespread 
– Leaf Miner 
– Day-flying
– difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.Confusion Species: E.cicatricella; E.semipurpurella; E.sparrmannella
ID pointers: Metallic purple coloured forewings with a scattering of gold metallic markings and narrow hind-wing scales. The adults are difficult to tell apart from E. semipurpurella without reference to the genitalia structure.
Distribution: An early flier and a fairly common species throughout the county.
General Comment: None Mine Period Additional: None.
Mine ID Difficulty:
– Care required in ID process as confusion with similar leaf mines. Quality photos of the mine required. Mine Type/s: Blotch
Mine Feeding Method/s: Not Recorded
Mine Comment: The larva creates a distinctive blotch mine in a leaf of birch (Betula), rather like some related species, but unlike the other species, the larva itself is dark grey and is quite distinctive if the mined leaf is held up to the light. The mine is a full-depth white blotch starting at the edge of a leaf. The larva mine the birch leaves from end of March until end of May
*** Last updated on 21 November 2025 by TD ***
Forewing: 4-7mm
Blue-coded] moths are not stored on the website at this current time. Selected Images: King’s Newton – Will Soar © / undetermined so either/or with 2.007
Image Gallery
No gallery images found for this moth.
Distribution Map for Eriocrania sangii
Found 2 records
↳ 1 from After 2025
↳ 0 from 2020 - 2024
↳ 1 from Before 2020
↳ 1 from After 2025
↳ 0 from 2020 - 2024
↳ 1 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 – Eriocrania sangii
⚠️ 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:
Eriocrania sangii
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Eriocrania sangii
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Eriocrania sangii
Adult-only & Anything [Larvae, Pupae, Adult, Mines]
Shading shows moth presence between dates
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Recordings By Year: Eriocrania sangii
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Eriocrania sangii
AGR: 0% | Total % Change: 0%
CUSUM Analysis: Eriocrania sangii
About this chart: CUSUM (Cumulative Sum) charts track long-term trends in moth populations [ filtered by 'Adult' and 'Mine' life stages ] by showing whether each year’s counts are above or below the historical average. Even small shifts build up over time, making trends of growth, stability, or decline easier to see. CUSUM highlights trend-consistency — asking: “Across the years, have moth counts mostly stayed above or below average?”
The data sample has 24 gap year/s here (zero records) between 2000 and 2025. The moth may have been present in those gap years, but no data was available. Too many year-gaps may exaggerate or skew the chart.
Counts for the current year (2025) are pro-rated based on data available up to month 10 (October) to provide a full-year equivalent.
ⓘ
Purple line rises = years better than average; falls = years worse than average.
Peak (best year)
Trough (worst year)
Growth periods
Decline periods
Population peaked around 2025, reaching above average levels. The lowest population point occurred near 2009, showing a significant decline.
What the Y-axis "Cumulative Deviation" means: Cumulative Deviation shows the running total of how each year’s moth population count differs from the long-term average. i
Hectad (10kmx10km) Coverage: Eriocrania sangii
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Eriocrania sangii
Eriocrania sangii
( data includes Adult Stage only )
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 2020-2025.
Mine Periods – Indicative –vs– Recorded Data
Eriocrania sangii
Eriocrania sangii
( 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 2020-2025.
Records Behind the Map and Charts - Eriocrania sangii – 2 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Derbyshire Wild Life Trust Long Clough | SK09G | 03/05/2025 | 1 | Leaf-mine | vc57_irecords_extract |
| Carvers Rocks NR,Hartshorne | SK32G | 08/05/2009 | 1 | Larval Mine | vc57_danes_bc_data |