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 
– Rare / Uncommon / Scarce 
– Leaf Miner
– difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.Confusion Species: S.microtheriella and M. tityrella
ID pointers: An overall light brown or greyish upper-wing covered in coarse yellowish or silvery scales. A light orange-pale yellow head and a pale cross-band at about a third, bordering the darker final third of the wing. Whitish cilia.
Distribution: (Last record: 24 November 2025 at Glossop, Long Clough ) – With few records of any adults and most relate to the Leaf mines, the species is obviously present in the county in wide scattered localities but relatively uncommon.
General Comment: Notes by Christian Heintzen on Stigmella floslactella – On Hazel – 24th Nov 2025 – Long Clough, Glossop – on Hazel (Corylus) (A) > long corridor/gallery intially filled with green frass (B,C) > final larval chamber broader than larva (B) > exit slit on upper surface of leaf (D) > egg in or at vein [E] ©
Mine Period Additional: more frequently found in Sept-Oct
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 long slender, gradually widening corridor mine in the leaf. The frass in the mine is initially a green line but later becomes scattered in irregular arcs and clouds. The best means of identification is the position of the egg within the mine. The egg is always laid in a vein axil on the underside of a leaf, this helps to identify it from S.microtheriella which most often lays its egg in a vein but not in the axil (A leaf axil is the angle or space fromed where a smaller vein branches off from a larger vein on a leaf). The mines are often found alongside S.microtheriella on the same leaf.
*** Last updated on 7 December 2025 by TD ***
Last Recorded Year: 2025
Last Recorded By – Christian Heintzen
Last Recorded General Area – Glossop, Long Clough
Selected Images:
Monsal Head October 2024 – Martin C.Harvey© ; Lathkill Dale October 2024 – Martin C.Harvey© / Steve Orridge© / Long Clough, Glossop – Nov 2025 – Christian Heintzen©
![Stigmella floslactella - On Hazel - 24th Nov 2025 - Long Clough, Glossop - Christian Heintzen - on Hazel (Corylus) (A) > long corridor/gallery intially filled with green frass (B,C) > final larval chamber broader than larva (B) > exit slit on upper surface of leaf (D) > egg in or at vein [E]](https://www.derbyshiremoths.org/wp-content/uploads/2025/12/Stigmella-floslactella-OnHazel-24th-Nov-2025-Long-Clough-Glossop-Christian-Heintzen-272x300.jpeg)
![Stigmella floslactella - On Hazel - 24th Nov 2025 - Long Clough, Glossop - Christian Heintzen - on Hazel (Corylus) (A) > long corridor/gallery intially filled with green frass (B,C) > final larval chamber broader than larva (B) > exit slit on upper surface of leaf (D) > egg in or at vein [E]](https://www.derbyshiremoths.org/wp-content/uploads/2025/12/Stigmella-floslactella-OnHazel-24th-Nov-2025-Long-Clough-Glossop-Christian-Heintzen.jpeg)
Image Gallery
Distribution Map for Stigmella floslactella
Found 35 records
↳ 1 from 2025+
↳ 10 from 2020 - 2024
↳ 24 from Before 2020
↳ 1 from 2025+
↳ 10 from 2020 - 2024
↳ 24 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 floslactella
⚠️ 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 floslactella
( data includes both Larvae and Adult Stages )
Monthly Counts By Year: Stigmella floslactella
( data is based on 'Adult' stage records only. )
First/Last Recorded Dates: Stigmella floslactella
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 floslactella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Stigmella floslactella
AGR: 0% | Total % Change: 0%
CUSUM Analysis: Stigmella floslactella
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 13 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 2024, 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 floslactella
( data includes both Larvae and Adult Stages )
Flight Periods – Indicative –vs– Recorded Data
Stigmella floslactella
Stigmella floslactella
( 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 floslactella
Stigmella floslactella
( 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 floslactella – 35 records available
Listed by Year - descending - scroll across to see all table columns
| Site Name | Tetrad | Date | Count | Stage | Source |
|---|---|---|---|---|---|
| Glossop, DWT Long Clough | SK09G | 24/11/2025 | 1 | Leaf-mine | vc57_irecords_extract |
| Burton upon Trent | SK32P | 05/11/2024 | 1 | Mine | vc57_irecords_extract |
| Lathkill Dale | SK16X | 16/10/2024 | 1 | mine | vc57_irecords_extract |
| Monsall Head | SK17V | 14/10/2024 | 1 | mine | vc57_irecords_extract |
| Poppy Wood | SK32S | 22/11/2023 | 1 | Mine | vc57_irecords_extract |
| Calke Park | SK32R | 07/10/2023 | 1 | Mine | vc57_irecords_extract |
| Calke Park | SK32R | 01/10/2023 | 1 | Mine | vc57_irecords_extract |
| Carver's Rocks | SK32G | 30/09/2023 | 1 | Mine | vc57_irecords_extract |
| Carver's Rocks | SK32H | 21/09/2023 | 1 | Mine | vc57_irecords_extract |
| Allestree Park | SK34K | 25/09/2022 | 1 | Mine | vc57_irecords_extract |
| Former Saint-Gobain Pipeworks, Staveley [centroid] | SK47C | 29/07/2020 | 1 | Adult | vc57_irecords_extract |
| Grange Wood | SK21S | 13/09/2018 | 1 | Mine | vc57_irecords_extract |
| Burrs Wood, Cordwell Valley | SK37C | 01/11/2015 | 1 | mine (empty) | vc57_irecords_extract |
| Coombs Dale, Calver | SK27H | 19/10/2015 | 1 | not recorded | vc57_irecords_extract |
| Millers Dale | SK17G | 03/09/2011 | 1 | Larval Mine | vc57_danes_bc_data |
| Thorpe, Dovedale | SK15K | 13/10/2010 | 1 | Larval Mine | vc57_danes_bc_data |
| Ashford in the Water | SK16Z | 22/09/2010 | 1 | Larval Mine | vc57_danes_bc_data |
| Ashford in the Water | SK16Z | 22/09/2010 | 1 | Larval Mine | vc57_danes_bc_data |
| Bamford | SK28B | 21/09/2010 | 1 | Larval Mine | vc57_danes_bc_data |
| Ladybower Resr | SK18U | 03/09/2010 | 1 | Larval Mine | vc57_danes_bc_data |
| Cromford | SK25Y | 16/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Linacre Wood | SK37G | 13/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Coombs Dale,Stoney Middleton | SK27H | 12/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Hilton Gravel Pits NR, Hilton | SK23K | 08/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Hope | SK18R | 07/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Norbury | SK14G | 01/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Tissington Trail, Ashbourne | SK14T | 01/10/2009 | 1 | Larval Mine | vc57_danes_bc_data |
| Calke Park | SK32L | 25/10/2008 | 1 | Mine | vc57_irecords_extract |
| Calke Park,Ticknall | SK32R | 25/10/2008 | 1 | Larval Mine | vc57_danes_bc_data |
| Lathkill Dale,Bakewell | SK16Y | 19/09/2008 | 1 | Larval Mine | vc57_danes_bc_data |
| Monsall Trail, Buxton | SK17L | 14/09/2008 | 1 | Larval Mine | vc57_danes_bc_data |
| Carr Vale NR,Bolsover | SK47K | 13/09/2006 | 1 | Larval Mine | vc57_danes_bc_data |
| Ogston Carr Wood,nr Ogston Res | SK35U | 12/07/2006 | 1 | Larval Mine | vc57_danes_bc_data |
| Clattercotes Wood, nr Ogston Resr | SK36K | 12/07/2006 | 1 | Larval Mine | vc57_danes_bc_data |
| Abbotsholme School, Rocester | SK13E | 04/10/2001 | 1 | Larval Mine | vc57_danes_bc_data |