49.244 BF1132  –  Tortricidae –  Olethreutinae – Epinotia subocellana – Pale Willow Tortrix – (Donovan, 1806) 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
** Photograph required / Identification write up required **
Other Name/s: White Sallow Bell
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Distribution:  (Last record: 15 June 2025 at Bonsall Moor )  –  Uncertain – few modern day records – Harrison & Sterling described this moth as locally common in places containing the food plant. DaNES show 3 records all in July, Allestree 2011; Allestree 2013 & Alvaston 2013. iRecord Buxton 17/6/2022 & Allestree 1/8/2024. 1 Bonsall Moor 15/6/2025
General Comment: None
Flight Period: May /  June /  July –  One generation May to July flying Dusk onwards Moth Activity: Nocturnal   – active from dusk and attracted to light Photographed: Yes –  Photographed By: Clive Ashton  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 10-14mm
Food Plant: Sallow
Last Recorded Year: 2025
Last Recorded By – Clive Ashton
Last Recorded General Area – Bonsall Moor

Selected Images:  

Bonsall Moor (2025) Clive Ashton©



Distribution Map for Epinotia subocellana

Found 7 records
    ↳ 2 from After 2025
    ↳ 2 from 2020 - 2024
    ↳ 3 from Before 2020
Flying
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 – Epinotia subocellana

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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.

Visit NBN Site


Monthly Records By Year: Epinotia subocellana
( data includes both Larvae and Adult Stages )

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


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


CUSUM Analysis: Epinotia subocellana
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 21 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 10 (October) 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: Epinotia subocellana
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Epinotia subocellana
( 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 - Epinotia subocellana – 7 records available

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

Site NameTetradDateCountStageSource
Bonsall MoorSK25P15/06/20251adultvc57_irecords_extract
Havercroft RoadSK38L13/06/20251Adultvc57_irecords_extract
AllSK33P01/08/20241adultvc57_irecords_extract
Ladycroft AveSK07S17/06/20221adultvc57_irecords_extract
Duffield Rd, Allestree, DerbySK34K25/07/20131Adultvc57_danes_bc_data
Lang Rd, Alvaston, DerbySK33R11/07/20131Adultvc57_danes_bc_data
Duffield Rd, Allestree, DerbySK34K25/07/20111Adultvc57_danes_bc_data

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