15.01 BF288  –  Gracillariidae –  Gracillariinae – Caloptilia stigmatella – Willow Stilt – (Fabricius, 1781) Adult Micro:  CAT 1 – Distinctive Species –       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   >>  Gracillariidae  >> Gracillariinae
Other Name/s: White-triangle Slender
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: A characteristic resting pose, with the body raised on the front legs. Forewing a reddish-brown with a pale yellow or whitish triangular costal blotch
Distribution:  Nationally common – Probably well distributed in the county
Flight Period: May /  June /  July /  September /  –  Moths emerge in July and over winter as adult, so can then be seen in April – May Mine Period: July /  August /  September /  October /  November /   – The larva is a leaf miner feeding on Willow, Sallow, Poplar and Aspen. The Gallery leads to a blotch, then creating two or three edges or tips of a leaf cones. Photographed: Yes –  Photographed By: Will Soar, Dave Evans  © All Rights Reserved
*** Last updated on 6 May 2025 by RP ***
Wingspan: 12-14mm
Food Plant: Sallow, Willow, Aspen , Poplar
Recorded dates for Common [Blue code Blue-coded] moths are not stored on the website at this current time.

IMAGES BELOW:  Kings Newton, Derbyshire – Will Soar ©  –  Leaf Mine – 1st September 2024 – Dave Evans ©

 
 

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Distribution Map for Caloptilia stigmatella

Found 79 records
    ↳ 6 from After 2025
    ↳ 26 from 2020 - 2024
    ↳ 47 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 – Caloptilia stigmatella

⚠️ 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: Caloptilia stigmatella
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Caloptilia stigmatella
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: Caloptilia stigmatella
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Caloptilia stigmatella
AGR: 8.88%   |   Total % Change: 550%


CUSUM Analysis: Caloptilia stigmatella
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 7 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 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: Caloptilia stigmatella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Caloptilia stigmatella
( 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
Caloptilia stigmatella
( 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 - Caloptilia stigmatella – 79 records available

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

TaxonSite NameTetradYearDateCountStageSource
Caloptilia stigmatellaDWT Wyver LaneSK34P202509/09/20256mine (empty)vc57_irecords_extract
Caloptilia stigmatellaDWT Wyver LaneSK34P202506/08/20256mine (empty)vc57_irecords_extract
Caloptilia stigmatellaDWT Wyver LaneSK34P202513/08/20257mine (empty)vc57_irecords_extract
Caloptilia stigmatellaDWT Wyver LaneSK34P202526/08/20258mine (empty)vc57_irecords_extract
Caloptilia stigmatellaDWT Wyver LaneSK34P202523/07/202511mine (empty)vc57_irecords_extract
Caloptilia stigmatellaLadycroft Ave, BuxtonSK07S202510/04/20251adultvc57_irecords_extract
Caloptilia stigmatellaDWT Wyver LaneSK34P202404/09/20244mine (empty)vc57_irecords_extract
Caloptilia stigmatellaDWT Wyver LaneSK34P202412/09/20242mine (empty)vc57_irecords_extract
Caloptilia stigmatellaLady Canning's PlantationSK28W202413/09/20241mine (empty)vc57_irecords_extract
Caloptilia stigmatellaDarley BridgeSK26Q202414/08/20241Adultvc57_irecords_extract
Caloptilia stigmatellaStaveley DerbyshireSK47H202429/07/20241adultvc57_irecords_extract
Caloptilia stigmatellaFindern, Derbyshire, DEAZSK33A202423/07/20241adultvc57_irecords_extract
Caloptilia stigmatellaStaveley DerbyshireSK47H202424/06/20241adultvc57_irecords_extract
Caloptilia stigmatellaWoodland Avenue MothtrapSK43R202429/03/20241adultvc57_irecords_extract
Caloptilia stigmatellaKing's NewtonSK32Y202413/03/20241adultvc57_irecords_extract
Caloptilia stigmatellaPoppy WoodSK32S202322/11/20231Minevc57_irecords_extract
Caloptilia stigmatellaWoodland AveSK43R202308/09/20231adultvc57_irecords_extract
Caloptilia stigmatellaFindern GardenSK33A202308/09/20231Adultvc57_irecords_extract
Caloptilia stigmatellaFindern GardenSK33A202330/09/20231Adultvc57_irecords_extract
Caloptilia stigmatellaCarver's RocksSK32G202330/09/20231Minevc57_irecords_extract
Caloptilia stigmatellaLadycroft Ave, BuxtonSK07S202328/07/20231adultvc57_irecords_extract
Caloptilia stigmatellaFindern, Derbyshire, DEAZSK33A202216/06/20221adultvc57_irecords_extract
Caloptilia stigmatellaHavercroft RoadSK38L202219/03/20221Adultvc57_irecords_extract
Caloptilia stigmatellaWoodland AveSK43R202101/08/20211adultvc57_irecords_extract
Caloptilia stigmatellaMidway, Derbys.SK32A202110/08/20211adultvc57_irecords_extract
Caloptilia stigmatellaNot givenSK22F202108/07/20211Adultvc57_irecords_extract
Caloptilia stigmatellaWoodland AveSK43R202102/07/20211adultvc57_irecords_extract
Caloptilia stigmatellaWoodland AveSK43R202118/07/20211adultvc57_irecords_extract
Caloptilia stigmatellaWoodland AveSK43R202120/07/20211adultvc57_irecords_extract
Caloptilia stigmatellaDrakelow, Derbys.SK22F202108/07/20211adultvc57_irecords_extract
Caloptilia stigmatellaMidway, Derbys.SK32A202120/03/20211adultvc57_irecords_extract
Caloptilia stigmatellaFerneydale AvenueSK07Q202130/03/20211adultvc57_irecords_extract
Caloptilia stigmatellaTideswell DaleSK17M201807/07/20182adultvc57_irecords_extract
Caloptilia stigmatellaMain Street, Kings NewtonSK32Y201819/07/20181Adultvc57_irecords_extract
Caloptilia stigmatellaMain Street, Kings NewtonSK32Y201815/05/20181Adultvc57_irecords_extract
Caloptilia stigmatellaMain Street, Kings NewtonSK32Y201703/07/20171Adultvc57_irecords_extract
Caloptilia stigmatellaBackgarden MarehaySK34Z201729/03/20172adultvc57_irecords_extract
Caloptilia stigmatellaRamsley Moor and ReservoirSK27X201520/10/20152pre-adultvc57_irecords_extract
Caloptilia stigmatellaBackgarden MarehaySK34Z201410/07/20141adultvc57_irecords_extract
Caloptilia stigmatellaHartshorne area, SwadlincoteSK32F201302/09/20133Larval Minevc57_danes_bc_data
Caloptilia stigmatellaBackgarden of Broadway, Ripley DELJSK45A201302/08/20131adultvc57_irecords_extract
Caloptilia stigmatellaBackgarden MarehaySK34Z201325/08/20131adultvc57_irecords_extract
Caloptilia stigmatellaBackgarden MarehaySK34Z201323/07/20132adultvc57_irecords_extract
Caloptilia stigmatellaDrakelow NR (car park),Burton on TrentSK22F201312/07/20131Adultvc57_danes_bc_data
Caloptilia stigmatellaWood Lane,Newhall,SwadlincoteSK22V201316/07/20131Adultvc57_danes_bc_data
Caloptilia stigmatellaFindern Close, BelperSK34P201224/07/20121Adultvc57_danes_bc_data
Caloptilia stigmatellaBackgarden MarehaySK34Z201101/10/20111adultvc57_irecords_extract
Caloptilia stigmatellaBamford St,RipleySK34Z201101/10/20111Adultvc57_danes_bc_data
Caloptilia stigmatellaWood Lane,Newhall,SwadlincoteSK22V201129/09/20111Adultvc57_danes_bc_data
Caloptilia stigmatellaBackgarden MarehaySK34Z201115/07/20111adultvc57_irecords_extract
Caloptilia stigmatellaBamford St,RipleySK34Z201115/07/20111Adultvc57_danes_bc_data
Caloptilia stigmatellaThe Hollies,Station Rd,Darley DaleSK26R201106/04/20111Adultvc57_danes_bc_data
Caloptilia stigmatellaSchool Close,Parkway Gardens,Darley DaleSK26R201121/03/20111Adultvc57_danes_bc_data
Caloptilia stigmatellaThorpe, DovedaleSK15K201013/10/20101Larval Minevc57_danes_bc_data
Caloptilia stigmatellaLadybower ResrSK18U201003/09/20101Larval Minevc57_danes_bc_data
Caloptilia stigmatellaBamfordSK28B201021/09/20101Larval Minevc57_danes_bc_data
Caloptilia stigmatellaHowden ResrSK19S201025/08/20101Larval Minevc57_danes_bc_data
Caloptilia stigmatellaRose Av,ClowneSK57D201021/07/20101Adultvc57_danes_bc_data
Caloptilia stigmatellaDronfield WoodhouseSK37J201010/04/20101adultvc57_irecords_extract
Caloptilia stigmatellaHardhurst Rd, Alvaston, DerbySK33W201009/04/20101Adultvc57_danes_bc_data
Caloptilia stigmatellaHardhurst Rd, Alvaston, DerbySK33W201017/04/20101Adultvc57_danes_bc_data
Caloptilia stigmatellaHardhurst Rd, Alvaston, DerbySK33W201024/04/20102Adultvc57_danes_bc_data
Caloptilia stigmatellaCoombs Dale,Stoney MiddletonSK27H200912/10/20091Larval Minevc57_danes_bc_data
Caloptilia stigmatellaLinacreSK37L200913/10/20091Larval Minevc57_danes_bc_data
Caloptilia stigmatellaDrakelow NR (car park),Burton on TrentSK22F200918/09/20091Adultvc57_danes_bc_data
Caloptilia stigmatellaMonsall Trail, BuxtonSK17L200814/09/20081Larval Minevc57_danes_bc_data
Caloptilia stigmatellaCalke Park Ticknall Lime YardsSK32R200703/08/20071adultvc57_irecords_extract
Caloptilia stigmatellaTicknall Limeyards,TicknallSK32R200703/08/20071Adultvc57_danes_bc_data
Caloptilia stigmatellaCarr Vale NR,BolsoverSK47K200613/09/20061Larval Minevc57_danes_bc_data
Caloptilia stigmatellaForemark Resr, TicknallSK32H200509/07/20051Adultvc57_danes_bc_data
Caloptilia stigmatellaToyota Site, BurnastonSK23V200428/07/20041Adultvc57_irecords_extract
Caloptilia stigmatellaBurnaston (Toyota Plant NR), DerbySK23V200428/07/20041Adultvc57_danes_bc_data
Caloptilia stigmatellaMain Street, Kings NewtonSK32Y200427/03/20041Adultvc57_irecords_extract
Caloptilia stigmatellaMain St,Kings Newton,MelbourneSK32Y200427/03/20041Adultvc57_danes_bc_data
Caloptilia stigmatellaMain Street, Kings NewtonSK32Y200302/10/20031Adultvc57_irecords_extract
Caloptilia stigmatellaMain St,Kings Newton,MelbourneSK32Y200302/10/20031Adultvc57_danes_bc_data
Caloptilia stigmatellaCalke Park (Betty's Pool),TicknallSK32R199803/07/19981Adultvc57_danes_bc_data
Caloptilia stigmatellaWood Lane,Newhall,SwadlincoteSK22V199811/07/19981Adultvc57_danes_bc_data
Caloptilia stigmatellaHilton GPSK23K199423/08/19941Larvaevc57_danes_bc_data

 
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