Cydia splendana       Thaumatotibia leucotreta
49.342 BF1259  –  Tortricidae –  Olethreutinae – Cydia fagiglandana – Beech Mast Piercer – (Zeller, 1841) Adult Micro:  CAT 2 – Confusion Species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Black – Uncertain/Unknown – Insufficient Data   
Taxonomy:   Micro   >>  Tortricidae  >> Olethreutinae
Other Name/s: Large Beech Piercer
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Confusion Species:  C. splendana
ID pointers: Forewing blackish or blackish-brown. Speckled with whitish-grey or greyish. A whitish-grey central cross-band. The costa has whitish variable length streaks. The large ocellus is edged metallic leaden containing three or four black dashes or dots.
Distribution:  Unknown – not listed in Harrison & Sterling (1988) – Assume localised in Derbyshire. Preferred habitat is Beech.
Flight Period: May /  June /  July /  August /  –  On the wing during May – August. Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –  Photographed By: Dave Evans  © All Rights Reserved
*** Last updated on 27 July 2025 by TD ***
Wingspan: 13-19mm
 Food Plant: Beech.
Last Recorded By – Not Recorded
Last Recorded General Area – Not Recorded
IMAGES BELOW:  Belper, Derbyshire – Dave Evans©

Cydia fagiglandana - Dave Evans
Cydia fagiglandana – Dave Evans
Cydia fagiglandana - Dave Evans

no images were found

Distribution Map for Cydia fagiglandana

Found 26 records
    ↳ 5 from After 2025
    ↳ 16 from 2020 - 2024
    ↳ 5 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 – Cydia fagiglandana

⚠️ 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: Cydia fagiglandana
( data includes both Larvae and Adult Stages )

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


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


CUSUM Analysis: Cydia fagiglandana
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 19 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: Cydia fagiglandana
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Cydia fagiglandana
( 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.

Records Behind the Map and Charts - Cydia fagiglandana – 26 records available

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

TaxonSite NameTetradYearDateCountStageSource
Cydia fagiglandanaupper cromford gardenSK25Y202501/07/20251adultvc57_irecords_extract
Cydia fagiglandanaBuxton (w)SK07R202517/07/20251adultvc57_irecords_extract
Cydia fagiglandanaBelperSK34N202528/07/20251adultvc57_irecords_extract
Cydia fagiglandanaNorton Lees, SheffieldSK38L202512/06/20251adultvc57_irecords_extract
Cydia fagiglandanaBelper, DerbyshireSK34N202530/05/20251adultvc57_irecords_extract
Cydia fagiglandanaNorton Lees, Sheffield (VC)SK38L202405/08/20241adultvc57_irecords_extract
Cydia fagiglandanaSandiacreSK43S202409/07/20241adultvc57_irecords_extract
Cydia fagiglandanaForbes Hole LNRSK43W202419/07/20241adultvc57_irecords_extract
Cydia fagiglandanaBelperSK34N202430/07/20241adultvc57_irecords_extract
Cydia fagiglandanaNorton Lees, Sheffield (VC)SK38L202430/07/20242adultvc57_irecords_extract
Cydia fagiglandanaNorton Lees, Sheffield (VC)SK38L202417/07/20241adultvc57_irecords_extract
Cydia fagiglandanaKing's NewtonSK32Y202429/07/20241adultvc57_irecords_extract
Cydia fagiglandanaCross Green, Matlock DEJW, UKSK26Q202403/06/20241Adultvc57_irecords_extract
Cydia fagiglandanaBelper GardenSK34P202304/08/20231adultvc57_irecords_extract
Cydia fagiglandanaBelperSK34U202309/08/20231adultvc57_irecords_extract
Cydia fagiglandanaSandiacreSK43T202330/07/20231adultvc57_irecords_extract
Cydia fagiglandanaHathersage, Derbyshire, UKSK28F202310/06/20231adultvc57_irecords_extract
Cydia fagiglandanaHathersageSK28F202316/06/20231adultvc57_irecords_extract
Cydia fagiglandanaHathersage, Derbyshire, UKSK28F202229/07/20222adultvc57_irecords_extract
Cydia fagiglandanaBelperSK34U202221/07/20221adultvc57_irecords_extract
Cydia fagiglandanaBuxton SK, UKSK07S202126/08/20211Adultvc57_irecords_extract
Cydia fagiglandanaMain Street, Kings NewtonSK32Y201915/07/20191Adultvc57_irecords_extract
Cydia fagiglandanaNorton LeesSK38L201916/07/20191adultDanes_2019-2021
Cydia fagiglandanaCalke Park Ticknall Lime YardsSK32R200703/08/20071adultvc57_irecords_extract
Cydia fagiglandanaTicknall Limeyards,TicknallSK32R200703/08/20071Adultvc57_danes_bc_data
Cydia fagiglandanaEast Buxton Lime Quarry, BuxtonSK17G199917/07/19991Adultvc57_danes_bc_data

Cydia splendana       Thaumatotibia leucotreta

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