Pandemis heparana       Lozotaenia forsterana
49.028 BF986  –  Tortricidae –  Tortricinae – Syndemis musculana – Dark-barred Tortrix – (Hübner, [1799]) Adult Micro:  CAT 1 – Distinctive Species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Blue –  Generally Common / Widespread        day-flying – Day-flying
Taxonomy:   Micro   >>  Tortricidae  >> Tortricinae
Other Name/s: Dark-barred Twist
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: An overall grey moth, with forewing colour ranging from whitish grey to brownish grey or silvery brown. Speckled black with a broad dark diagonal cross-band. Intensity of the markings is very variable.
Distribution:  Generally Common in low numbers across most areas of the county.
General Comment: None Flight Period: April /  May /  June –  On the wing during April – June. Moth Activity: Nocturnal  Crepuscular   – and is attracted to light Photographed: Yes –  Photographed By: Jane & Phil Lester, Dave Evans  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 15-22mm
 Food Plant: Bramble (Rubus), Birch (Betula) and Oak (Quercus).
Recorded dates for Common [Blue code Blue-coded] moths are not stored on the website at this current time.
Selected Images:  Curbar, Derbyshire – Jane & Phil Lester© / Belper – Dave Evans©

9.028 BF986 - Tortricidae - Tortricinae - Syndemis musculana
Syndemis musculana – Janeu0026 Phil Lester – Curba
Syndemis musculana - 17th June 2024 - Belper - Dave Evans
Syndemis musculana – 17th June 2024 – Belper – Dave Evans
9.028 BF986 - Tortricidae - Tortricinae - Syndemis musculana
Syndemis musculana - 17th June 2024 - Belper - Dave Evans


Image Gallery

49.028 BF986 - Syndemis musculana Curbar, Derbyshire. photo by Jane & Phil Lester©

Distribution Map for Syndemis musculana

Found 140 records
    ↳ 16 from After 2025
    ↳ 56 from 2020 - 2024
    ↳ 68 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 – Syndemis musculana

⚠️ 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: Syndemis musculana
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Syndemis musculana
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: Syndemis musculana
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Syndemis musculana
AGR: 0.78%   |   Total % Change: 18.8%


CUSUM Analysis: Syndemis musculana
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 5 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 9 (September) 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 2023, 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: Syndemis musculana
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Syndemis musculana
( 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 - Syndemis musculana – 140 records available

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

Site NameTetradDateCountStageSource
Belper, DerbyshireSK34N11/07/20251adultvc57_irecords_extract
Chaddesden, DerbySK33T27/05/20252adultvc57_irecords_extract
Derbyshire Wild Life Trust Long Clough, Herod CloughSK09G24/05/20251adultvc57_irecords_extract
Miller's Dale: bank of River WyeSK17L19/05/20251adultvc57_irecords_extract
Buxton: Light WoodSK07M18/05/20251adultvc57_irecords_extract
Buxton: Flint CloughSK07M18/05/20252adultvc57_irecords_extract
Inkersall gardenSK47G17/05/20251adultvc57_irecords_extract
Staveley garden SYASK47H16/05/20251adultvc57_irecords_extract
White Knowle Road, BuxtonSK07R13/05/20251Adultvc57_irecords_extract
SheffieldSK38M13/05/20251adultvc57_irecords_extract
Havercroft RoadSK38L12/05/20251adultvc57_irecords_extract
Longdendale, Torside grassland and willow carrSK09U12/05/20251adultvc57_irecords_extract
Allestree, DerbySK33P02/05/20252adultvc57_irecords_extract
Chaddesden, DerbySK33T01/05/20251adultvc57_irecords_extract
Belper, DerbyshireSK34N01/05/20251adultvc57_irecords_extract
upper cromford gardenSK25Y30/04/20251adultvc57_irecords_extract
BelperSK34N17/06/20241adultvc57_irecords_extract
Allestree, DerbySK33P31/05/20241adultvc57_irecords_extract
Longdendale, Wildboar CloughSK09U30/05/20241adultvc57_irecords_extract
Havercroft RoadSK38L26/05/20241Adultvc57_irecords_extract
Ingleby Ave, DerbySK33L25/05/20241adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G25/05/20245adultvc57_irecords_extract
Bridgeway, High Peak, England, GBSK07P19/05/20241Adultvc57_irecords_extract
Longdendale, Wildboar CloughSK09U19/05/202410adultvc57_irecords_extract
South Yorkshire, England, GBSK38L17/05/20241Adultvc57_irecords_extract
Ninelands RoadSK28F17/05/20241adultvc57_irecords_extract
Havercroft RoadSK38L17/05/20241Adultvc57_irecords_extract
Glossop, The TwitchlingsSK09M17/05/20242adultvc57_irecords_extract
Sandiacre GardenSK43T17/05/20241adultvc57_irecords_extract
Glossop, Shire Hill, southSK09M16/05/20242adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G15/05/20244adultvc57_irecords_extract
Glossop, Gnat Hole Rough FieldsSK09L12/05/20241adultvc57_irecords_extract
Allestree, DerbySK33P12/05/20242adultvc57_irecords_extract
Brockwell Chesterfield , Derbyshire.SK37Q11/05/20241adultvc57_irecords_extract
Ninelands RoadSK28F11/05/20241adultvc57_irecords_extract
Glossop, The TwitchlingsSK09K11/05/20241adultvc57_irecords_extract
Glossop, The TwitchlingsSK09M11/05/20241adultvc57_irecords_extract
Allestree, DerbySK33P10/05/20241adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G10/05/20241adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A10/05/20241adultvc57_irecords_extract
Allestree, DerbySK33P10/05/20241adultvc57_irecords_extract
BelperSK34N09/05/20241adultvc57_irecords_extract
Drakelow, Derbys.SK22F07/05/20241adultvc57_irecords_extract
Woodland AveSK43R07/07/20231adultvc57_irecords_extract
White Knowle Road, BuxtonSK07R11/06/20231Adultvc57_irecords_extract
Belper GardenSK34P09/06/20231adultvc57_irecords_extract
Alicehead, ChesterfieldSK36H05/06/20231Adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G30/05/20231adultvc57_irecords_extract
SandiacreSK43T19/05/20231adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G16/05/20231adultvc57_irecords_extract
Derbyshire Wild Life Trust Long CloughSK09G08/05/20231adultvc57_irecords_extract
Findern GardenSK33A06/05/20231Adultvc57_irecords_extract
Ferneydale AvenueSK07Q02/06/20221adultvc57_irecords_extract
SandiacreSK43T20/05/20221adultvc57_irecords_extract
Birch ValeSK08I19/05/20221adultvc57_irecords_extract
Sett ValleySJ98X17/05/20221larvavc57_irecords_extract
Ferneydale AvenueSK07Q11/05/20221adultvc57_irecords_extract
TorsideSK09U26/09/20211larvavc57_irecords_extract
Ferneydale AvenueSK07Q17/06/20211adultvc57_irecords_extract
Peak District National Park, Bakewell, England, GBSK26E16/06/20211Adultvc57_irecords_extract
Ferneydale AvenueSK07Q13/06/20211adultvc57_irecords_extract
Midway, Derbys.SK32A10/06/20211adultvc57_irecords_extract
Hathersage, Derbyshire, UKSK28F09/06/20211adultvc57_irecords_extract
Hathersage, Derbyshire, UKSK28F09/06/20211adultvc57_irecords_extract
Birch ValeSK08I09/06/20213Adultvc57_irecords_extract
Birch ValeSK08I06/06/20211Adultvc57_irecords_extract
Ferneydale AvenueSK07Q05/06/20211adultvc57_irecords_extract
Hathersage, Derbyshire, UKSK28F09/05/20211adultvc57_irecords_extract
Woodland AveSK43R06/07/20201adultvc57_irecords_extract
Buxton SK, UKSK07S27/05/20201Adultvc57_irecords_extract
Ladycroft Ave, BuxtonSK07S21/05/20201adultvc57_irecords_extract
Havercroft RoadSK38L18/05/20201Adultvc57_irecords_extract
Havercroft RoadSK38L02/06/20191Adultvc57_irecords_extract
Birch ValeSK08I01/06/20192adultvc57_irecords_extract
Havercroft RoadSK38L25/05/20191Adultvc57_irecords_extract
Birch ValeSK08I19/05/20181adultvc57_irecords_extract
Birch ValeSK08I13/05/20181adultvc57_irecords_extract
Sheffield, England, United KingdomSK38L01/06/20171Adultvc57_irecords_extract
White Knowle Road, BuxtonSK07R18/04/20171Adultvc57_irecords_extract
White Knowle Road, BuxtonSK07R18/04/20171adultvc57_irecords_extract
Wood Lane,Newhall,SwadlincoteSK22V23/05/20141Adultvc57_danes_bc_data
Millennium Meadow NR, DuffieldSK34L20/05/20131Adultvc57_danes_bc_data
Welbeck Drive,WingerworthSK36T12/06/20121Adultvc57_danes_bc_data
White Knowle Rd, BuxtonSK07R06/06/20121Adultvc57_irecords_extract
White Knowle Road, BuxtonSK07R06/06/20121Adultvc57_irecords_extract
Wood Lane,Newhall,SwadlincoteSK22V05/06/20121Adultvc57_danes_bc_data
Jackson's LnSK34U21/05/20121Adultvc57_irecords_extract
Backgarden MarehaySK34Z17/05/20111adultvc57_irecords_extract
Crich Chase,AmbergateSK35L17/05/20111Adultvc57_danes_bc_data
Bamford St,RipleySK34Z17/05/20111Adultvc57_danes_bc_data
School Close,Parkway Gardens,Darley DaleSK26R08/05/20111Adultvc57_danes_bc_data
Backgarden MarehaySK34Z07/05/20114adultvc57_irecords_extract
Bamford St,RipleySK34Z07/05/20114Adultvc57_danes_bc_data
Backgarden MarehaySK34Z06/05/20111adultvc57_irecords_extract
School Close,Parkway Gardens,Darley DaleSK26R06/05/20111Adultvc57_danes_bc_data
Bamford St,RipleySK34Z06/05/20111Adultvc57_danes_bc_data
The Hollies,Station Rd,Darley DaleSK26R28/04/20111Adultvc57_danes_bc_data
Backgarden MarehaySK34Z16/07/20101adultvc57_irecords_extract
Bamford St,RipleySK34Z16/07/20101Adultvc57_danes_bc_data
Rose Av,ClowneSK57D09/06/20101Adultvc57_danes_bc_data
Rose Av,ClowneSK57D07/06/20101Adultvc57_danes_bc_data
Backgarden MarehaySK34Z05/06/20101adultvc57_irecords_extract
Bamford St,RipleySK34Z05/06/20101Adultvc57_danes_bc_data
Wood Lane,Newhall,SwadlincoteSK22V04/06/20101Adultvc57_danes_bc_data
Millstone Edge,HathersageSK28K04/06/20101Adultvc57_danes_bc_data
Rose Av,ClowneSK57D24/05/20101Adultvc57_danes_bc_data
Ladycroft Ave,BuxtonSK07S23/05/20102Adultvc57_danes_bc_data
Elm Wood,DerbySK33R22/05/20101Adultvc57_danes_bc_data
Hardhurst Rd, Alvaston, DerbySK33W22/05/20102Adultvc57_danes_bc_data
Ladycroft Ave,BuxtonSK07S21/05/20101Adultvc57_danes_bc_data
Newboundmill Lane,PleasleySK56C18/04/20101Adultvc57_danes_bc_data
Carver Rocks area, HartshorneSK32G16/05/20091Adultvc57_danes_bc_data
Millstone Edge,HathersageSK28K06/06/20081Adultvc57_danes_bc_data
Newboundmill Lane,PleasleySK56C04/06/20082Adultvc57_danes_bc_data
Midway Rd,Midway,SwadlincoteSK32A31/05/20081Adultvc57_danes_bc_data
Midway Rd,Midway,SwadlincoteSK32A10/05/20081Adultvc57_danes_bc_data
Carvers Rocks (old toilet block area)SK32G10/05/20082Adultvc57_danes_bc_data
Beeley Moor, BeeleySK26Y06/06/20072Adultvc57_danes_bc_data
Calke Park Ridge from Fisherman's Car ParkSK32R24/04/20071adultvc57_irecords_extract
Calke Park,TicknallSK32R24/04/20071Adultvc57_danes_bc_data
Midway Rd,Midway,SwadlincoteSK32A21/07/20061Adultvc57_danes_bc_data
Robin WoodSK32M23/06/20061Adultvc57_irecords_extract
Robin Wood (centre area track), TicknallSK32M23/06/20061Adultvc57_danes_bc_data
South Wood, Calke, TicknallSK32Q01/06/20062Adultvc57_danes_bc_data
The Hollies,Station Rd,Darley DaleSK26R27/05/20061Adultvc57_danes_bc_data
Foremark Resr, TicknallSK32H12/05/20063Adultvc57_danes_bc_data
Clough Wood,Darley DaleSK26K17/06/20051Adultvc57_danes_bc_data
Edgecote Drive,Newhall,SwadlincoteSK22V05/06/20041Adultvc57_danes_bc_data
Main Street, Kings NewtonSK32Y17/05/20041Adultvc57_irecords_extract
Edgecote Drive,Newhall,SwadlincoteSK22V10/05/20041Adultvc57_danes_bc_data
Rose End Meadows NR,CromfordSK25Y10/05/20041Adultvc57_danes_bc_data
Wood Lane,Newhall,SwadlincoteSK22V22/06/20031Adultvc57_danes_bc_data
Calke Park (Betty's Pool & Poker's Leys), TicknallSK32R22/05/19981Adultvc57_danes_bc_data
Hell Bank Plantation (site not precise)SK26Z19/06/19941Adultvc57_danes_bc_data
Slagmill Plantation, Beeley Moor (site not precise)SK36E14/06/19941Adultvc57_danes_bc_data
Clough Wood,Darley DaleSK26K27/04/19931Adultvc57_danes_bc_data
Deerlands Rd, Ashgate, ChesterfieldSK37K10/05/19901Adultvc57_danes_bc_data
Carvers Rocks NR,Hartshorne,SwadlincoteSK32G08/06/19791Adultvc57_danes_bc_data
Carvers Rocks NR,Hartshorne,SwadlincoteSK32G29/05/19791Adultvc57_danes_bc_data
Hunger Hill, HolymoorsideSK36I31/05/19631Adultvc57_danes_bc_data

Pandemis heparana       Lozotaenia forsterana

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