15.022 BF310  –  Gracillariidae –  Gracillariinae – Callisto denticulella – Apple Nymph – (Thunberg, 1794) 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
Green –  Rare / Uncommon / Scarce        purple – Leaf Miner
Taxonomy:   Micro   >>  Gracillariidae  >> Gracillariinae
Other Name/s: Garden Apple Slender
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: Sits in a distinctive angular posture – head shows erect orange tufted scales. Forewing is a dark brown, with 3 whitish triangular shaped spots running along the edge of the costa and two on the dorsum.
Distribution:  (Last record: 1985 )  –  Likely to be uncommon with less than 10 records, majority of which are from the south of the county. Found where there is a good density of apple trees.
Flight Period: May /  June /  –  On the wing in May & June Mine Period: July /  August /   – The larvae first of all mine the leaf creating a gallery, then a blotch and then foling the leaf several times, feeding within before pupating. Moth Activity: Cathemeral  Photographed: No –  Photographed By: Not Recorded
*** Last updated on 6 May 2025 by RP ***
Wingspan: 11mm
Food Plant: Apple
Last Recorded Year: 1985
Last Recorded By – Not Recorded
Last Recorded General Area – Not Recorded

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Distribution Map for Callisto denticulella

Found 11 records
    ↳ 1 from After 2025
    ↳ 2 from 2020 - 2024
    ↳ 8 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 – Callisto denticulella

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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.

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Monthly Records By Year: Callisto denticulella
( data includes both Larvae and Adult Stages )

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


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


CUSUM Analysis: Callisto denticulella
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 17 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 2021, 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: Callisto denticulella
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Callisto denticulella
( 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
Callisto denticulella
( 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 - Callisto denticulella – 11 records available

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

TaxonSite NameTetradYearDateCountStageSource
Callisto denticulellaNorton, Hemsworth RoadSK38L202526/08/20251minevc57_irecords_extract
Callisto denticulellaMidway, Derbys.SK32A202128/05/20211adultvc57_irecords_extract
Callisto denticulellaLongshaw National TrustSK27U202015/06/20201Adultvc57_irecords_extract
Callisto denticulellaAllestree, DerbySK33P201827/05/20181adultvc57_irecords_extract
Callisto denticulellaSheffield, England, United KingdomSK38L201723/05/20171Adultvc57_irecords_extract
Callisto denticulellaMillennium Meadow NR, DuffieldSK34L201416/08/20141Larval Minevc57_danes_bc_data
Callisto denticulellaBamfordSK28B201021/09/20101Larval Minevc57_danes_bc_data
Callisto denticulellaPadley Gorge, Nether PadleySK27P201019/08/20101Larval Minevc57_danes_bc_data
Callisto denticulellaRose Av,ClowneSK57D201021/05/20101Adultvc57_danes_bc_data
Callisto denticulellaCarr Vale NR,BolsoverSK47K200613/09/20061Larval Minevc57_danes_bc_data
Callisto denticulellaAbbotsholme School, RocesterSK13E200104/10/20011Larval Minevc57_danes_bc_data

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