Stigmella alnetella       Stigmella prunetorum
4.010 BF111  –  Nepticulidae –  Nepticulinae – Stigmella microtheriella – Nut-tree Dot – (Stainton, 1854) Adult Micro:  CAT 4 – Gen. Det. Required – Gen-Det-Reqd       Leaf-miner:  CAT L – The leaf or a Photo required – reared and possibly dissected       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Black – Uncertain/Unknown – Insufficient Data        purple – Leaf Miner
Taxonomy:   Micro   >>  Nepticulidae  >> Nepticulinae
Other Name/s: Nut-tree Pigmy
ID Difficulty:  Red – difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.
ID pointers: A Leaf-miner – A narrow and long gallery that usually follows the veins of the leaf. Numerous mines can be located on each leaf. Frass is linear to start with becoming dispersed later. Favours Hazel (Corylus)
Distribution:  (Last record: 5 November 2024 at Pottery Wood )  –  National Status – Common and widely distributed – Derbyshire status unknown.
Flight Period: May /  August /  –  May and August Mine Period: July /  October /  November /   – July and October – November Photographed: Yes –  Photographed By: Dave Evans  © All Rights Reserved
*** Last updated on 27 July 2025 by TD ***
Wingspan: 3-4mm
 Food Plant: Hazel (Corylus avellana) and less commonly, Hornbeam (Carpinus betulae)
Last Recorded Year: 2024
Last Recorded By – Graham Finch
Last Recorded General Area – Pottery Wood
IMAGES BELOW:  Dave Evans – September 2024 & August 2022 – Wyver Lane, Belper.

Stigmella microtheriella (tenanted) - Leaf Mine - Dave Evans
Stigmella microtheriella (tenanted) – Leaf Mine – Dave Evans
4.010 BF111 - Nepticulidae - Nepticulinae - Stigmella microtheriella
Stigmella microtheriella (tenanted) – Leaf Mine – Dave Evans
Stigmella microtheriella (tenanted) - Leaf Mine - Dave Evans
4.010 BF111 - Nepticulidae - Nepticulinae - Stigmella microtheriella

 
 
Stigmella microtheriella on Hazel. Stigmella microtheriella on Hazel. - 30th October 2024 - Wyver Lane - Dave Evans

Distribution Map for Stigmella microtheriella

Found 44 records
    ↳ 9 from After 2025
    ↳ 16 from 2020 - 2024
    ↳ 19 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.

******* Choose ONLY one at a time, of either Monad, Tetrad or Hectad Distribution - each has it's own set of data. Also, the distribution maps cover ALL recorded data. *******

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.

Land-cover * shows the variety of land-cover within the VC57 area, based on the CORINE (Coordination of Information on the Environment) forty-four thematic classes of land-cover. This will show, to a greater or lesser degree, the number and variety of moths found in different land-cover types. The UK continues to operate within the Copernicus programme, with the UK Centre for Ecology & Hydrology (UKCEH) providing Corine Land Cover (CLC) datasets for the UK and its territories.


NBN Atlas UK Distribution for – Stigmella microtheriella

⚠️ 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.

Visit NBN Site


Monthly Records By Year: Stigmella microtheriella
( data includes both Larvae and Adult Stages )

Monthly Counts By Year: Stigmella microtheriella
( data is based on 'Adult' stage records only. )


First/Last Recorded Dates: Stigmella microtheriella
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 microtheriella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Stigmella microtheriella
AGR: 5.29%   |   Total % Change: 244.4%


CUSUM Analysis: Stigmella microtheriella
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 7 (July) 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 2018, 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 microtheriella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Stigmella microtheriella
( 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 microtheriella
( 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 microtheriella – 44 records available

Listed by Year - descending - scroll across to see all table columns

TaxonSite NameTetradYearDateCountStageSource
Stigmella microtheriellaDWT Wyver LaneSK34P202506/08/20254mine (empty)vc57_irecords_extract
Stigmella microtheriellaDWT Wyver LaneSK34P202513/08/20254mine (empty)vc57_irecords_extract
Stigmella microtheriellaGraves Park (Chantreyland Meadow)SK38K202515/08/20251minevc57_irecords_extract
Stigmella microtheriellaSunnydale LNRSK33G202522/08/20253minevc57_irecords_extract
Stigmella microtheriellaIngleby Ave, DerbySK33L202522/08/20253minevc57_irecords_extract
Stigmella microtheriellaMeersbrook ParkSK38M202522/08/20251minevc57_irecords_extract
Stigmella microtheriellaDarwin ForestSK36C202501/07/202510mine (empty)vc57_irecords_extract
Stigmella microtheriellaDWT Wyver LaneSK34P202523/07/20254mine (empty)vc57_irecords_extract
Stigmella microtheriellaGleadless Valley LNRSK38R202528/07/20251minevc57_irecords_extract
Stigmella microtheriellaChancet woodSK38L202406/12/20241Adultvc57_irecords_extract
Stigmella microtheriellaPottery WoodSK32G202405/11/20241Minevc57_irecords_extract
Stigmella microtheriellaTom Wood, CharlesworthSJ99W202426/10/20241Larvavc57_irecords_extract
Stigmella microtheriellaDWT Wyver LaneSK34P202430/10/20246mine (empty)vc57_irecords_extract
Stigmella microtheriellaDWT Wyver LaneSK34P202404/09/20247mine (empty)vc57_irecords_extract
Stigmella microtheriellaDWT Wyver LaneSK34P202412/09/202412mine (tenantvc57_irecords_extract
Stigmella microtheriellaRiver Derwent, DerbySK33S202421/09/20241minevc57_irecords_extract
Stigmella microtheriellaRiver Derwent, DerbySK33S202421/09/20241minevc57_irecords_extract
Stigmella microtheriellaCromford CanalSK35G202418/08/20245mine (empty)vc57_irecords_extract
Stigmella microtheriellaCromford CanalSK35G202417/08/20242mine (empty)vc57_irecords_extract
Stigmella microtheriellaPoppy WoodSK32S202322/11/20231Minevc57_irecords_extract
Stigmella microtheriellaCalke ParkSK32R202307/10/20231Minevc57_irecords_extract
Stigmella microtheriellaCalke ParkSK32R202301/10/20231Minevc57_irecords_extract
Stigmella microtheriellaCarver's RocksSK32G202330/09/20231Minevc57_irecords_extract
Stigmella microtheriellaCarver's RocksSK32H202321/09/20231Minevc57_irecords_extract
Stigmella microtheriellaDWT Wyver LaneSK34P202110/11/202120mine (empty)vc57_irecords_extract
Stigmella microtheriellaBamford, Win Hill and Thornhill TrailSK28B201802/10/20181not recordedvc57_irecords_extract
Stigmella microtheriellaGrange WoodSK21S201813/09/20181Minevc57_irecords_extract
Stigmella microtheriellaBurrs Wood, Cordwell ValleySK37C201501/11/20151mine (empty)vc57_irecords_extract
Stigmella microtheriellaCoton Wood, Coton in the Elms, SwadlincoteSK21M201421/09/20141Larval Minevc57_danes_bc_data
Stigmella microtheriellaMillennium Meadow NR, DuffieldSK34L201409/08/20141Larval Minevc57_danes_bc_data
Stigmella microtheriellaHartshorne Wood, Hartshorne, SwadlincoteSK32G201413/08/20141Larval Minevc57_danes_bc_data
Stigmella microtheriellaBack Lane,GlapwellSK46T201226/05/20121Adultvc57_danes_bc_data
Stigmella microtheriellaMillers DaleSK17G201103/09/20111Larval Minevc57_danes_bc_data
Stigmella microtheriellaBamfordSK28B201021/09/20101Larval Minevc57_danes_bc_data
Stigmella microtheriellaLadybower ResrSK18U201003/09/20101Larval Minevc57_danes_bc_data
Stigmella microtheriellaAshford in the WaterSK16Z201022/09/20101Larval Minevc57_danes_bc_data
Stigmella microtheriellaAshford in the WaterSK16Z201022/09/20101Larval Minevc57_danes_bc_data
Stigmella microtheriellaHopeSK18R200907/10/20091Larval Minevc57_danes_bc_data
Stigmella microtheriellaCoombs Dale,Stoney MiddletonSK27H200912/10/20091Larval Minevc57_danes_bc_data
Stigmella microtheriellaCoombs Dale,Stoney MiddletonSK27H200912/10/20091Larval Minevc57_danes_bc_data
Stigmella microtheriellaHopton Wood NR, CromfordSK25T200916/10/20091Larval Minevc57_danes_bc_data
Stigmella microtheriellaCalke ParkSK32L200825/10/20081Minevc57_irecords_extract
Stigmella microtheriellaCalke Park,TicknallSK32R200825/10/20081Larval Minevc57_danes_bc_data
Stigmella microtheriellaCubley, nr AshbourneSK13U200104/10/20011Larval Minevc57_danes_bc_data

 
Stigmella alnetella       Stigmella prunetorum

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