Stigmella perpygmaeella       Stigmella speciosa
4.055 BF81  –  Nepticulidae –  Nepticulinae – Stigmella hemargyrella – Beech Dot – (Kollar, 1832) 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: Beech Pigmy
ID Difficulty:  Red – difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.
ID pointers: The mine is a sinuous gallery, with coiled frass in the central part of the gallery. The mine has the egg displaced from the midrib (central main vein of the leaf), unlike Stigmella tityrella, which has the egg on the underside against the midrib. The mine in the photograph is shown on Fagus (Beech) – Adults of overall bronzy-brown in colour with a central silvery patch in the fascia.
Distribution:  (Last record: 17 September 2021 at Belper )  –  National Status – Fairly common – Derbyshire status unknown – lack of data – likely to be locally common in Beech woodland – only 1 set of leaf mine photographs.
Flight Period: April /  May /  July /  August /  –  two generations in April – May & July – August Mine Period: June /  August /  September /   – Leaf mine June and August – September  Photographed: Yes –  Photographed By: Dave Evans  © All Rights Reserved
*** Last updated on 27 July 2025 by TD ***
Wingspan: 5-6mm
 Food Plant: Beech
Last Recorded By – Not Recorded
Last Recorded General Area – Belper
IMAGES BELOW:  Dave Evans – September 17th 2021 – Wyver Lane, Belper.

4.055 BF81 - Nepticulidae - Nepticulinae - Stigmella hemargyrella
Stigmella hemargyrella – Beech Pigmy – Dave Evans
4.055 BF81 - Nepticulidae - Nepticulinae - Stigmella hemargyrella

 
 

no images were found

 

Distribution Map for Stigmella hemargyrella

Found 45 records
    ↳ 7 from After 2025
    ↳ 15 from 2020 - 2024
    ↳ 23 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 hemargyrella

⚠️ 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 hemargyrella
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Stigmella hemargyrella
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 hemargyrella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Stigmella hemargyrella
AGR: 3.5%   |   Total % Change: 128.6%


CUSUM Analysis: Stigmella hemargyrella
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 15 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 2023, 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 hemargyrella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Stigmella hemargyrella
( 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 hemargyrella
( 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 hemargyrella – 45 records available

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

TaxonSite NameTetradYearDateCountStageSource
Stigmella hemargyrellaDWT Wyver LaneSK34P202502/09/20258mine (empty)vc57_irecords_extract
Stigmella hemargyrellaDWT Wyver LaneSK34P202513/08/20253mine (empty)vc57_irecords_extract
Stigmella hemargyrellaNorton Lees, SheffieldSK38L202515/08/20251adultvc57_irecords_extract
Stigmella hemargyrellaShallcross Wood, TaxalSK07E202526/08/20251minevc57_irecords_extract
Stigmella hemargyrellaGraves Park, SheffieldSK38L202526/08/20251minevc57_irecords_extract
Stigmella hemargyrellaGraves ParkSK38K202504/07/20251minevc57_irecords_extract
Stigmella hemargyrellaGleadless Valley LNRSK38R202528/07/20251minevc57_irecords_extract
Stigmella hemargyrellaDarwin ForestSK36C202402/10/202415mine (empty)vc57_irecords_extract
Stigmella hemargyrellaAshwood Park, BuxtonSK07R202412/10/20241minevc57_irecords_extract
Stigmella hemargyrellaMonsall TrailSK17L202414/10/20241mine (empty)vc57_irecords_extract
Stigmella hemargyrellaCrich Lane WoodsSK34P202419/10/202415mine (empty)vc57_irecords_extract
Stigmella hemargyrellaCote Heath WoodSK07L202410/09/20241minevc57_irecords_extract
Stigmella hemargyrellaFoxlow Wood, BuxtonSK07R202413/09/20243minevc57_irecords_extract
Stigmella hemargyrellaCote Heath WoodsSK07R202414/09/20241minevc57_irecords_extract
Stigmella hemargyrellaSherbrook Wood, BuxtonSK07R202413/09/20241Adultvc57_irecords_extract
Stigmella hemargyrellaFoxlow Wood, BuxtonSK07R202419/07/20241Adultvc57_irecords_extract
Stigmella hemargyrellaCalke ParkSK32R202307/10/20231Minevc57_irecords_extract
Stigmella hemargyrellaCalke ParkSK32R202301/10/20231Minevc57_irecords_extract
Stigmella hemargyrellaHogshaw WoodSK07S202306/09/20231minevc57_irecords_extract
Stigmella hemargyrellaTemple Fields, BuxtonSK07L202303/09/20231Larvavc57_irecords_extract
Stigmella hemargyrellaFairholmesSK18U202311/02/20231minevc57_irecords_extract
Stigmella hemargyrellaAshwood Park, BuxtonSK07R202025/07/20201Larvavc57_irecords_extract
Stigmella hemargyrellaGrange WoodSK21S201813/09/20181Minevc57_irecords_extract
Stigmella hemargyrellaMillers DaleSK17G201103/09/20111Larval Minevc57_danes_bc_data
Stigmella hemargyrellaThorpe, DovedaleSK15K201013/10/20101Larval Minevc57_danes_bc_data
Stigmella hemargyrellaKirk Dale, Ashford in the WaterSK16Z201022/09/20101Larvavc57_irecords_extract
Stigmella hemargyrellaLadybower ResrSK18U201003/09/20101Larval Minevc57_danes_bc_data
Stigmella hemargyrellaAshford in the WaterSK16Z201022/09/20101Larval Minevc57_danes_bc_data
Stigmella hemargyrellaPadley Gorge, Nether PadleySK27P201019/08/20101Larval Minevc57_danes_bc_data
Stigmella hemargyrellaHowden ResrSK19S201025/08/20101Larval Minevc57_danes_bc_data
Stigmella hemargyrellaHowden ResrSK19L201025/08/20101Larval Minevc57_danes_bc_data
Stigmella hemargyrellaDerbyshire, UKSK14G200902/10/20091Larvavc57_irecords_extract
Stigmella hemargyrellaHopeSK18R200907/10/20091Larval Minevc57_danes_bc_data
Stigmella hemargyrellaNorburySK14G200901/10/20091Larval Minevc57_danes_bc_data
Stigmella hemargyrellaStoney MiddletonSK27H200912/10/20091Larval Minevc57_danes_bc_data
Stigmella hemargyrellaLinacre WoodSK37G200913/10/20091Larval Minevc57_danes_bc_data
Stigmella hemargyrellaCromfordSK25Y200916/10/20091Larval Minevc57_danes_bc_data
Stigmella hemargyrellaCastletonSK18L200910/09/20091Larval Minevc57_danes_bc_data
Stigmella hemargyrellaCalke ParkSK32L200825/10/20081Minevc57_irecords_extract
Stigmella hemargyrellaCalke Park,TicknallSK32R200825/10/20081Larval Minevc57_danes_bc_data
Stigmella hemargyrellaOaks Barn Cottage, Monyash Rd, Over Haddon, BakewellSK26D200819/09/20081Larval Minevc57_danes_bc_data
Stigmella hemargyrellaOgston Carr Wood,nr Ogston ResSK35U200612/07/20061Larval Minevc57_danes_bc_data
Stigmella hemargyrellaHillclifflane, nr IdridgehaySK24Y200202/11/20021Larval Minevc57_danes_bc_data
Stigmella hemargyrellaBrackley Gate, nr CoxbenchSK34W200103/11/20011Larval Minevc57_danes_bc_data
Stigmella hemargyrellaAbbotsholme School, RocesterSK13E200104/10/20011Larval Minevc57_danes_bc_data

 
Stigmella perpygmaeella       Stigmella speciosa

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