49.149 BF1092  –  Tortricidae –  Olethreutinae – Apotomis turbidana – White-shouldered Marble – Hübner, [1825] 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
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Confusion Species:  apotomis lineana Apotomis sororculana
ID pointers: Two thirds of the forewing are silver blue-grey with final third whitish. A broad dark central cross band, mixed with brown, grey and black, with a slight hook shaped indentation. tufted scales towards the basal area.
Distribution:  (First record: 1892 )  –  (Last record: 27 June 2024 at Chaddesden, Derby )  –  With so few records since the 1980’s it is difficult to predict the current status in VC57 and Derbyshire. It should be widespread across the county where there is Birch.
Flight Period: May /  June /  July /  –  On the wing during late May – July. Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –  Photographed By: Will Soar, Dave Evans  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 19-21mm
Food Plant: Birch (Betula).
Last Recorded Year: 2024
First Recorded Year: 1892
Last Recorded By – Martin Roome
Last Recorded General Area – Chaddesden, Derby

Selected Images:  Kings Newton, Derbyshire – Will Soar© / Belper – Dave Evans©



Distribution Map for Apotomis turbidana

Found 26 records
    ↳ 2 from After 2025
    ↳ 3 from 2020 - 2024
    ↳ 21 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 – Apotomis 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.

Visit NBN Site


Monthly Records By Year: Apotomis turbidana
( data includes both Larvae and Adult Stages )

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


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


CUSUM Analysis: Apotomis 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 15 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 8 (August) 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 2011, reaching above average levels. The lowest population point occurred near 2004, 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: Apotomis turbidana
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Apotomis 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 - Apotomis turbidana – 26 records available

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

Site NameTetradDateCountStageSource
Derbyshire Wild Life Trust Long CloughSK09G20/06/20251adultvc57_irecords_extract
Station Road Upper Padley GrindlefordSK27P01/06/20251adultvc57_irecords_extract
South WoodSK31U27/06/20243adultvc57_irecords_extract
BelperSK34U25/06/20231adultvc57_irecords_extract
Wood Lane, Newhall, SwadlincoteSK22V01/07/20211adultDanes_2019-2021
The Meads, Shipley Park, HeanorSK44H13/07/20191adultDanes_2019-2021
Ladycroft Ave, BuxtonSK07S28/06/20191adultvc57_irecords_extract
Clough Wood,Darley DaleSK26K16/09/20111Adultvc57_danes_bc_data
Darley Bridge (Enthovens),Darley DaleSK26R19/08/20112Adultvc57_danes_bc_data
Clough Wood,Darley DaleSK26K27/07/20111Adultvc57_danes_bc_data
Clough Wood,Darley DaleSK26K27/07/201112Adultvc57_danes_bc_data
School Close,Parkway Gardens,Darley DaleSK26R15/06/20111Adultvc57_danes_bc_data
Whitesprings Plantation, Darley DaleSK26X25/06/20111Adultvc57_danes_bc_data
Flash Lane,Beeley MoorSK26X03/08/20072Adultvc57_danes_bc_data
Robin WoodSK32M25/08/20064Adultvc57_irecords_extract
Robin Wood (centre area track), TicknallSK32M25/08/20064Adultvc57_danes_bc_data
Flash Lane,Beeley MoorSK26X16/07/20065Adultvc57_danes_bc_data
Robin WoodSK32M23/06/20061Adultvc57_irecords_extract
Robin Wood (centre area track), TicknallSK32M23/06/20061Adultvc57_danes_bc_data
Robin Wood (central track), TicknallSK32S02/09/20057Adultvc57_danes_bc_data
Leash Fen area, Clod Hill Moor, BaslowSK27W28/08/20054Adultvc57_danes_bc_data
Main Street, Kings NewtonSK32Y29/06/20041Adultvc57_irecords_extract
Foremark Resr, TicknallSK32H25/06/20042Adultvc57_danes_bc_data
Clough Wood,Darley DaleSK26K10/04/20021Adultvc57_danes_bc_data
Ticknall Limeyards,TicknallSK32R11/06/19971Adultvc57_danes_bc_data
Crich Chase, Ambergate (site not precise)SK35L27/06/19961Adultvc57_danes_bc_data

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