49.290 BF1182  –  Tortricidae –  Olethreutinae – Epiblema turbidana – Butterbur Root-borer – (Treitschke, 1835) Adult Micro:  CAT 3 – Very Rare/Scarce/Migrant/Adventive – confusion with leaf mines       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Brown –  Significant Record / Very Rare / Vagrant    
Taxonomy:   Micro   >>  Tortricidae  >> Olethreutinae
** Photograph required / Identification write up required **
Other Name/s: Butterbur Bell
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
Distribution:  (Last record: 1 July 2025 at Ashford-in-the-Water )  –  Nationally Scarce B – Significant record – Harrison & Sterling – Dovedale 1927, Millers Dale 1956, Whaley Bridge 1953-56. DaNES 1993 & 2 records from Tideswell Dale 2007. Latest record from Ashford-in-the-Water 1st July 2025. Confined to areas where the food plant exists so still likely to be found in the dales.
Flight Period: June /  July /  Moth Activity: Cathemeral   – but often seen by day Photographed: No –  Photographed By: Not Recorded
*** Last updated on 3 July 2025 by TD ***
Wingspan: 16-22mm
Food Plant: Butterbur
Last Recorded Year: 2025
Last Recorded By – Steven Bell
Last Recorded General Area – Ashford-in-the-Water

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Distribution Map for Epiblema turbidana

Found 4 records
    ↳ 1 from After 2025
    ↳ 0 from 2020 - 2024
    ↳ 3 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 – Epiblema turbidana

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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: Epiblema turbidana
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Epiblema turbidana
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: Epiblema turbidana
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Epiblema turbidana
AGR: -2.23%   |   Total % Change: -33.3%


CUSUM Analysis: Epiblema turbidana
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 24 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 2007, 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: Epiblema turbidana
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Epiblema turbidana
( 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 - Epiblema turbidana – 4 records available

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

TaxonSite NameTetradYearDateCountStageSource
Epiblema turbidanaOld Marble Mill, Ashford in the WaterSK16Z202501/07/20251adultvc57_irecords_extract
Epiblema turbidanaTideswell DaleSK17L200709/06/20071Adultvc57_danes_bc_data
Epiblema turbidanaTideswell DaleSK17M200709/06/20072Adultvc57_danes_bc_data
Epiblema turbidanaDronfield By-pass (site not precise)SK37N199321/06/19931Adultvc57_danes_bc_data

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