Leaf-miner: CAT L – The leaf or a Photo required – 
Larval Case: C1 – Distinctive Species – 
– click for General Verification Guidelines | – click for Specific Verification Guidelines 
– Uncertain/Unknown – Insufficient Data 
– Leaf Miner 
– Day-flying
** Identification write-up required
**
– difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.Confusion Species: Stigmella continuella, Stigmella betulicola
ID pointers: Adult moths are difficult to distinguish from other Stigmella species and often require breeding out from the larval mine or GenDet examination for positive identification.
Distribution: (Last record: 2 October 2025 at Markham Vale ) – Uncertain due to lack of data. 1 record prior to 2010. 1 record Hemington 6/11/2021 and 1 record Minster 11/9/2024, one record from Glossop 28/8/2025, one record 2/10/2025 – Markham Vale
General Comment: Notes by Christian Heintzen re image dated 28/8/2025 – on Birch (Betula) (A,B) > slender gallery from start to end often starting near leaf edge and tip > mine is broadly filled with coiled frass (a) leaving a narrow, scalloped clear margin (b) > exit slit on upper surface [c]
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: Gallery
Mine Feeding Method/s: Not Recorded
Mine Comment: The larva creates a gallery mine in the birch leaf, typically starting from an egg laid on the underside. The mine is a slender corridor with brown, coiled and distinctive arcs of frass that leave narrow clear margins along the sides. This specific frass pattern helps distinguish its mine from similar species like Stigmella continuella, where the frass fills the gallery.
*** Last updated on 12 December 2025 by TD ***
Last Recorded Year: 2025
Last Recorded By – Mark Radford
Last Recorded General Area – Markham Vale
Selected Images:
Hemington – (2021) Sue Timms© / Glossop Aug 2025 Christian Heintzen©
Image Gallery
![Stigmella sakhalinella - 28th Aug 2025 - Glossop, Gnat Hole - Christian Heintzen - on Birch (Betula) (A,B) > slender gallery from start to end often starting near leaf edge and tip > mine is broadly filled with coiled frass (a) leaving a narrow, scalloped clear margin (b) > exit slit on upper surface [c]](https://www.derbyshiremoths.org/wp-content/gallery/micromothsderbyshire/Stigmella-sakhalinella-28th-Aug-2025-Glossop-Gnat-Hole-Christian-Heintzen-On-.jpeg)
Distribution Map for Stigmella sakhalinella
Found 3 records
↳ 1 from 2025+
↳ 1 from 2020 - 2024
↳ 1 from Before 2020
↳ 1 from 2025+
↳ 1 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 – Stigmella sakhalinella
⚠️ 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 sakhalinella
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Stigmella sakhalinella
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Stigmella sakhalinella
Adult-only & Anything [Larvae, Pupae, Adult, Mines]
Shading shows moth presence between dates
Click the colour discs below to Select/De-select as Required
Recordings By Year: Stigmella sakhalinella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Stigmella sakhalinella
AGR: 0% | Total % Change: 0%
CUSUM Analysis: Stigmella sakhalinella
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 23 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 2021, 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: Stigmella sakhalinella
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Stigmella sakhalinella
Stigmella sakhalinella
( 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
Stigmella sakhalinella
Stigmella sakhalinella
( 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 - Stigmella sakhalinella – 3 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Markham Vale South Tip | SK47L | 02/10/2025 | 1 | mine | vc57_irecords_extract |
| Hemington, along R Trent path adj to fishing lakes (former gravel pits) | SK43Q | 06/11/2021 | 1 | leafmine | vc57_irecords_extract |
| Bamford | SK28B | 21/09/2010 | 1 | Larval Mine | vc57_danes_bc_data |