4.062 BF88  –  Nepticulidae –  Nepticulinae – Stigmella samiatella – Chestnut Dot – (Zeller, 1839) 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: Chestnut 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 long, contorted and broad gallery, with dispersed frass towards the end of the gallery. The mine shown in the photograph is on Castanea (Sweet Chestnut) but it can also be found on Quercus (Oak). Adults – anothe unicolorous Nepticulidae species, until recently was poorly recorded in Britain
Distribution:  (Last record: September 2024 at Belper )  –  National Status – Local – Derbyshire status unknown due to lack of data.
Flight Period: June /  July /  August /  –  Two flight periods June & July – August Mine Period: June /  July /  September /  October /   – June-July and September – October. Photographed: Yes –  Photographed By: Dave Evans  © All Rights Reserved
*** Last updated on 6 May 2025 by RP ***
Wingspan: c5-7mm
Food Plant: Castanea (Sweet Chestnut) but it can also be found on Quercas (Oak).
Last Recorded Year: September 2024
Last Recorded By – Dave Evans
Last Recorded General Area – Belper

IMAGES BELOW:  Dave Evans – September 2024 & October 3rd 2021 – Wyver Lane, Belper.

 
 

no images were found

 

Distribution Map for Stigmella samiatella

Found 10 records
    ↳ 0 from After 2025
    ↳ 4 from 2020 - 2024
    ↳ 6 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 samiatella

⚠️ 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 samiatella
( data includes both Larvae and Adult Stages )
No data returned from the database.

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


First/Last Recorded Dates: Stigmella samiatella
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 samiatella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Stigmella samiatella
AGR: 0%   |   Total % Change: 0%


CUSUM Analysis: Stigmella samiatella
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 20 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 2013, reaching above average levels. The lowest population point occurred near 2008, 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 samiatella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Stigmella samiatella
( 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 samiatella
( 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 samiatella – 10 records available

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

TaxonSite NameTetradYearDateCountStageSource
Stigmella samiatellaDWT Wyver LaneSK34P202412/09/20241mine (empty)vc57_irecords_extract
Stigmella samiatellaCalke ParkSK32R202307/10/20231Minevc57_irecords_extract
Stigmella samiatellaCalke ParkSK32R202301/10/20231Minevc57_irecords_extract
Stigmella samiatellaCarver's RocksSK32G202330/09/20231Minevc57_irecords_extract
Stigmella samiatellaCarvers Rocks, Hartshorne, SwadlincoteSK32G201328/07/20132Larval Minevc57_danes_bc_data
Stigmella samiatellaNewhall (Waggon Lane)SK22W201008/08/20103Larval Minevc57_danes_bc_data
Stigmella samiatellaCalke ParkSK32L200825/10/20081Minevc57_irecords_extract
Stigmella samiatellaCalke Park,TicknallSK32R200825/10/20081Larval Minevc57_danes_bc_data
Stigmella samiatellaCauldwell (Badger Wood), SwadlincoteSK21T200805/10/20081Larval Minevc57_danes_bc_data
Stigmella samiatellaCalke Park,TicknallSK32R200622/11/20061Larval Minevc57_danes_bc_data

 
Scroll to Top