4.012 BF102  –  Nepticulidae –  Nepticulinae – Stigmella aceris – Maple Dot – (Frey, 1857) 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
Blue –  Generally Common / Widespread        purple – Leaf Miner
Taxonomy:   Micro   >>  Nepticulidae  >> Nepticulinae
** Identification write-up required **
Other Name/s: Scarce Maple Pigmy
ID Difficulty:  Red – difficult to identify – detailed examination required, often a Gen Det and/or specimen and quality photographs are required.
Confusion Species: Stigmella speciosa / Stigmella crataegella
ID pointers: No information available at this time
Distribution:  Widespread and increasing
Flight Period: May /  July /  August /  Mine Period: June /  July /  August /  September /   – The larvae mine the leaves of Field Maple and Norway Maple from end of June-early July, August-early September. Photographed: Yes –  Photographed By: Pete Mella; Tony Davison   © All Rights Reserved
*** Last updated on 25 October 2025 by TD ***
Wingspan: 4mm
Food Plant: Filed Maple – Norway Maple
Recorded dates for Common [Blue code Blue-coded] moths are not stored on the website at this current time.

Selected Images:  

Norton Lees (August 2025) Pete Mella© / Willington Wetlands (October 2025) Tony Davison©



Distribution Map for Stigmella aceris

Found 21 records
    ↳ 12 from After 2025
    ↳ 9 from 2020 - 2024
    ↳ 0 from Before 2020
Flying
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Mining
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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 aceris

⚠️ 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 aceris
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Stigmella aceris
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 aceris
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Stigmella aceris
AGR: 127.88%   |   Total % Change: 1083.3%


CUSUM Analysis: Stigmella aceris
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 22 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 9 (September) 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 aceris
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Stigmella aceris
( 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 aceris
( 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 aceris – 21 records available

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

Site NameTetradDateCountStageSource
Willington WetlandsSK22Y11/10/202510mine (empty)vc57_irecords_extract
Sunnydale LNRSK33G07/10/20251minevc57_irecords_extract
Darwin ForestSK26X04/10/20252mine (empty)vc57_irecords_extract
A, Derby South Services, Ashton-on-Trent.SK43F26/09/202514mine (empty)vc57_irecords_extract
Sunnyhill Park, DerbySK33L23/09/202510minevc57_irecords_extract
DWT Wyver LaneSK34P09/09/20251mine (empty)vc57_irecords_extract
Ingleby Ave, DerbySK33L22/08/202550minevc57_irecords_extract
Meersbrook ParkSK38M22/08/20251minevc57_irecords_extract
Sunnydale LNR, LittleoverSK33G21/08/202550minevc57_irecords_extract
DWT Wyver LaneSK34P20/08/20251mine (empty)vc57_irecords_extract
Norton Lees (Brindley Estate)SK38L15/08/20251minevc57_irecords_extract
Graves Park (Chantreyland Meadow)SK38K15/08/20251Adultvc57_irecords_extract
Alvaston Park, DerbySK33S21/09/20241minevc57_irecords_extract
River Derwent, DerbySK33S21/09/20241minevc57_irecords_extract
Spring LakesSK53A15/08/20241minevc57_irecords_extract
Poppy WoodSK32S22/11/20231Minevc57_irecords_extract
Calke ParkSK32R01/10/20231Minevc57_irecords_extract
Carver's RocksSK32H21/09/20231Minevc57_irecords_extract
Springwater LakesSK53B19/08/20231minevc57_irecords_extract
Rosliston Forest CentreSK21N15/10/20221othervc57_irecords_extract
Allestree ParkSK34K25/09/20221Minevc57_irecords_extract

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