70.274 BF1951  –  Geometridae –  Ennominae – Aethalura punctulata – Grey Birch – ([Denis & Schiffermüller], 1775) Adult Macro:  CAT 1 – Distinctive species unlikely to be confused with others –       PDF Icon – click for Adult Macro Verification Guidelines

Blue –  Generally Common / Widespread   
Taxonomy:   Macro   >>  Geometridae  >> Ennominae
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: A grey-brown moth that rests with slightly rounded wings open and flat. Has four distinct blotches along the leading edge of the forewing, with the inner and outer spurring off weak cross-lines. 
Distribution:  Resident, widely distributed and fairly common but local in lowland Derbyshire. It is most common in ancient woods south of the Trent Valley and in scattered areas of the Derwent Valley. Not recorded in the northern areas of the county.
General Comment: None
Flight Period: May /  June –  On the wing May – June Moth Activity: Nocturnal  Photographed: Yes –  Photographed By: Tony Davison  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 30-35mm
Forewing: 13-16mm
Food Plant: Birch (Betula).
Recorded dates for Common [Blue code Blue-coded] moths are not stored on the website at this current time.

Selected Images:  Foremark Reservoir, Derbyshire – Images by Tony Davison © 



Distribution Map for Aethalura punctulata

Found 108 records
    ↳ 14 from After 2025
    ↳ 24 from 2020 - 2024
    ↳ 70 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 – Aethalura punctulata

⚠️ 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: Aethalura punctulata
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Aethalura punctulata
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: Aethalura punctulata
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Aethalura punctulata
AGR: 2.66%   |   Total % Change: 92.9%


CUSUM Analysis: Aethalura punctulata
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 8 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 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: Aethalura punctulata
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Aethalura punctulata
( 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 - Aethalura punctulata – 108 records available

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

Site NameTetradDateCountStageSource
Derbyshire Wild Life Trust Long Clough, Herod CloughSK09G24/05/20251adultvc57_irecords_extract
Longdendale, Wildboar Clough WoodlandSK09U20/05/20257adultvc57_irecords_extract
Markham Vale South Tip , DerbyshireSK47K18/05/20251adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G17/05/20251adultvc57_irecords_extract
MellorSJ98Z13/05/20251adultvc57_irecords_extract
Longdendale, Torside grassland and willow carrSK09U12/05/20251adultvc57_irecords_extract
Froggatt, Hope ValleySK27N10/05/20251adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G03/05/20251adultvc57_irecords_extract
Cromford MoorSK25X01/05/20256adultvc57_irecords_extract
Hall Wood, CarsingtonSK25R30/04/20251adultvc57_irecords_extract
Inkersall gardenSK47G28/04/20251adultvc57_irecords_extract
Allestree, DerbySK33P26/04/20251adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G24/04/20253adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G22/04/20251adultvc57_irecords_extract
Longdendale, Wildboar CloughSK09U19/05/20244adultvc57_irecords_extract
Glossop, Shire Hill, southSK09M16/05/20246adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G15/05/20241adultvc57_irecords_extract
Glossop, The TwitchlingsSK09K11/05/20242adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G10/05/20241adultvc57_irecords_extract
Longdendale, Wildboar CloughSK09U09/05/202416adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G02/05/20245adultvc57_irecords_extract
Lower Cromford GardenSK25Y30/04/20241adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G30/04/20242adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G21/04/20243adultvc57_irecords_extract
Staveley DerbyshireSK47H12/04/20241adultvc57_irecords_extract
Markham Vale , Seymour , DerbyshireSK47L11/04/20241adultvc57_irecords_extract
Longdendale, Wildboar CloughSK09U28/05/20233adultvc57_irecords_extract
Hathersage, Derbyshire, UKSK28F27/05/20231adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G27/05/20231adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G16/05/20231adultvc57_irecords_extract
Glossop, Gnat Hole Rough FieldsSK09L14/05/20232adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G08/05/20234adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G03/05/20233adultvc57_irecords_extract
Upper Cromford GardenSK25Y01/05/20231adultvc57_irecords_extract
Hathersage, Derbyshire, UKSK28F16/04/20221adultvc57_irecords_extract
Birch ValeSK08I29/05/20201adultvc57_irecords_extract
Birch ValeSK08I20/05/20201adultvc57_irecords_extract
Station Road, Darley DaleSK26R26/04/20201adultvc57_irecords_extract
Birch ValeSK08I10/06/20172adultvc57_irecords_extract
Birch ValeSK08I24/05/20171adultvc57_irecords_extract
Yew Tree FarmSK36H03/06/20161adultvc57_irecords_extract
School Close,Parkway Gardens,Darley DaleSK26R31/05/20131Adultvc57_danes_bc_data
School Close,Parkway Gardens,Darley DaleSK26R31/05/20131Adultvc57_danes_bc_data
School Close,Parkway Gardens,Darley DaleSK26R29/05/20121Adultvc57_danes_bc_data
School Close,Parkway Gardens,Darley DaleSK26R29/05/20121Adultvc57_danes_bc_data
Clough Wood,Darley DaleSK26K25/05/20121Adultvc57_danes_bc_data
Clough Wood,Darley DaleSK26K25/05/20121Adultvc57_danes_bc_data
School Close,Parkway Gardens,Darley DaleSK26R24/05/20121Adultvc57_danes_bc_data
School Close,Parkway Gardens,Darley DaleSK26R24/05/20121Adultvc57_danes_bc_data
Clough Wood,Darley DaleSK26K06/05/20114Adultvc57_danes_bc_data
Clough Wood,Darley DaleSK26K22/04/20116Adultvc57_danes_bc_data
Wirestone, Slack, MatlockSK36G16/04/20114Adultvc57_danes_bc_data
School Close,Parkway Gardens,Darley DaleSK26R08/04/20111Adultvc57_danes_bc_data
The Hollies,Station Rd,Darley DaleSK26R07/04/20111Adultvc57_danes_bc_data
The Hollies,Station Rd,Darley DaleSK26R06/06/20101Adultvc57_danes_bc_data
Millstone Edge,HathersageSK28K04/06/20101Adultvc57_danes_bc_data
Elm Wood,DerbySK33R22/05/20101Adultvc57_danes_bc_data
Carvers Rocks (old toilet block area), Hartshorne, SwadlincoteSK32G10/05/20084Adultvc57_danes_bc_data
The Hollies,Station Rd,Darley DaleSK26R20/05/20071Adultvc57_danes_bc_data
Spinney Hill,MelbourneSK32X07/07/20061Adultvc57_danes_bc_data
Mercaston Marsh, Mercaston, BrailsfordSK24R17/06/20061Adultvc57_danes_bc_data
The Hollies,Station Rd,Darley DaleSK26R12/06/20061Adultvc57_danes_bc_data
Church St,Holloway,MatlockSK35I07/06/20061Adultvc57_danes_bc_data
The Hollies,Station Rd,Darley DaleSK26R11/05/20061Adultvc57_danes_bc_data
Bow Wood,Holloway,MatlockSK35D11/05/20061Adultvc57_danes_bc_data
The Hollies,Station Rd,Darley DaleSK26R09/05/20061Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S16/08/20051Adultvc57_danes_bc_data
Shipley Park (Cinder Hill), Shipley, IlkestonSK44H02/07/20051Adultvc57_danes_bc_data
Shipley Park (Cinder Hill), Shipley, IlkestonSK44H02/07/20051Adultvc57_danes_bc_data
Church St,Holloway,MatlockSK35I07/06/20041Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S05/06/20041Adultvc57_danes_bc_data
Clough Wood/Darley BridgeSK26Q28/05/20041Adultvc57_danes_bc_data
FOREMARK RESERVOIRSK32H22/05/20041adultvc57_irecords_extract
Foremark Res (Visitor's Centre),TicknallSK32G22/05/20041Adultvc57_danes_bc_data
Carvers Rocks, Hartshorne, SwadlincoteSK32G15/05/20041Adultvc57_danes_bc_data
Blacka Moor, Dore, SheffieldSK28V08/05/20011Adultvc57_danes_bc_data
Blacka Moor, Dore, SheffieldSK28V08/05/20011Adultvc57_danes_bc_data
School Close,Parkway Gardens,Darley DaleSK26R08/05/20001Adultvc57_danes_bc_data
School Close,Parkway Gardens,Darley DaleSK26R08/05/20001Adultvc57_danes_bc_data
Elvaston Park, DerbySK43B02/05/19971Adultvc57_danes_bc_data
Elvaston Park, DerbySK43B02/05/19971Adultvc57_danes_bc_data
Carvers Rocks, Hartshorne, SwadlincoteSK32G14/04/19971Adultvc57_danes_bc_data
Carvers Rocks, Hartshorne, SwadlincoteSK32G14/04/19971Adultvc57_danes_bc_data
Dorothy Ave, SandiacreSK43T08/05/19941Adultvc57_danes_bc_data
Elvaston Park, DerbySK43B22/05/19931Adultvc57_danes_bc_data
Pond House, Mapperley Res, IlkestonSK44G14/05/19921Adultvc57_danes_bc_data
Pond House, Mapperley Res, IlkestonSK44G14/05/19921Adultvc57_danes_bc_data
Whitwell Wood,WhitwellSK57J30/05/19901Adultvc57_danes_bc_data
Whitwell Wood,Whitwell,WorksopSK57J30/05/19901Adultvc57_danes_bc_data
Shipley Wood, Shipley ParkSK44L24/05/19852Adultvc57_danes_bc_data
Matlock (Teacher Training College)SK36A31/05/19821Adultvc57_danes_bc_data
Crich Chase, Ambergate (site not precise)SK35L28/05/19821Adultvc57_danes_bc_data
Shipley Wood, Shipley ParkSK44L21/05/19823Adultvc57_danes_bc_data
Crich Chase, Ambergate (site not precise)SK35L20/05/19821Adultvc57_danes_bc_data
Shipley Wood, Shipley ParkSK44L07/05/19821Adultvc57_danes_bc_data
Carvers Rocks NR, Hartshorne, Swadlincote (site not precise)SK32G13/06/19811Adultvc57_danes_bc_data
Shipley Wood, Shipley Park, IlkestonSK44L04/06/19813Adultvc57_danes_bc_data
Clough Wood,Darley DaleSK26K27/05/19811Adultvc57_danes_bc_data
Clough Wood,Darley DaleSK26K24/05/19811Larvaevc57_danes_bc_data
Drummond Rd, IlkestonSK44R22/05/19811Adultvc57_danes_bc_data
Clough Wood (near stream), Darley DaleSK26K01/05/19811Adultvc57_danes_bc_data
Carvers Rocks NR, Hartshorne, Swadlincote (site not precise)SK32G03/06/19802Adultvc57_danes_bc_data
Carvers Rocks NR, Hartshorne, Swadlincote (site not precise)SK32G30/05/19803Adultvc57_danes_bc_data
Carvers Rocks NR,Hartshorne,SwadlincoteSK32G18/05/19794Adultvc57_danes_bc_data
Field Studies Building, Drakelow Nature TrailSK21J04/06/19771Adultvc57_danes_bc_data
Field Close, Hilton, Burton on TrentSK23K13/06/19761Adultvc57_danes_bc_data
Field Studies Building, Drakelow Nature TrailSK21J09/05/19761Adultvc57_danes_bc_data
The Old Manse, Ault Hucknall, GlapwellSK46S06/07/19681Adultvc57_danes_bc_data

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