Swallow Prominent       Pale Prominent
71.018 BF2006  –  Notodontidae –  Notodontinae – Pheosia gnoma – Lesser Swallow Prominent Adult Macro:  CAT 2 – Can be confused with other species – Can be confused with other species       PDF Icon – click for Adult Macro Verification Guidelines
Blue –  Generally Common / Widespread   
Taxonomy:   Macro  >> .  . >>  Notodontidae  >> Notodontinae
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Confusion Species:  Swallow Prominent
ID pointers: The moth can be told from the Swallow Prominent by the distinct white wedge on the trailing edge of the forewing that extends inwards to almost halfway towards the wing base. The wing colour is a silver-creamy white with prominent black and brown markings along the wing edges.
Distribution:  A resident species that is locally common and widely distributed in Derbyshire. Found in birch woodland throughout the county.
Flight Period: May /  June /  July /  August /  –  On the wing May – August Photographed: Yes –  Photographed By: Tony Davison  © All Rights Reserved
*** Last updated on 6 May 2025 by RP ***
Wingspan: 45-50mm
Forewing: 20-26mm Food Plant: Birch (Betula).
Recorded dates for Common [Blue code Blue-coded] moths are not stored on the website at this current time.
IMAGES BELOW:  Melbourne, Derbyshire – Tony Davison ©

71.018 BF2006 - Lesser Swallow Prominent - Notodontidae - Pheosia gnoma
Lesser Swallow Prominent – Pheosia gnoma
71.018 BF2006 - Lesser Swallow Prominent - Notodontidae - Pheosia gnoma
Lesser Swallow Prominent – Pheosia gnoma
71.018 BF2006 - Lesser Swallow Prominent - Notodontidae - Pheosia gnoma
Lesser Swallow Prominent – Pheosia gnoma
71.018 BF2006 - Lesser Swallow Prominent - Notodontidae - Pheosia gnoma
71.018 BF2006 - Lesser Swallow Prominent - Notodontidae - Pheosia gnoma
71.018 BF2006 - Lesser Swallow Prominent - Notodontidae - Pheosia gnoma

2006-lesser-swallow-prominent2 Lesser Swallow Prominent - Melbourne - Tony Davison©
2006-lesser-swallow-prominent Lesser Swallow Prominent - Melbourne - Tony Davison©

Distribution Map for Pheosia gnoma

derbyshiremoths.org © makes no guarantee of accuracy of data used in these maps and charts – they are presented to you with best endeavours and the data behind them updated periodically as time permits. Historic records are being discovered all the time. These will be assessed, so once they are all verified, they will be incorporated onto the map and charts.

Found 1497 records
    ↳ 25 from After 2025
    ↳ 322 from 2020 - 2024
    ↳ 1150 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.


Monthly Records By Year: Pheosia gnoma

Monthly Counts By Year: Pheosia gnoma

Recordings By Year: Pheosia gnoma

Annual Growth Rate (AGR): Pheosia gnoma
AGR: -0.98%   |   Total % Change: -21.1%
Years Analysed: 2000 – 2024

Hectad (10kmx10km) Coverage: Pheosia gnoma

Flight Periods – Indicative –vs– Recorded Data
Pheosia gnoma

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 - Pheosia gnoma – 1497 records available

Listed by Year - descending

TaxonSite NameTetradYearDateCountStage
Pheosia gnomaStaveley DerbyshireSK47H202502/07/20251adult
Pheosia gnomaMellorSJ98Z202506/06/20251adult
Pheosia gnomaMy gardenSK36U202502/05/20251adult
Pheosia gnomaMarkham Vale Enviroment CentreSK47K202511/05/20251adult
Pheosia gnomaBelperSK34N202520/05/20251adult
Pheosia gnomaupper cromford gardenSK25Y202501/05/20251adult
Pheosia gnomaBelperSK34U202502/05/20251adult
Pheosia gnomaWardlow, Roost BarnSK17X202516/05/20251adult
Pheosia gnomaBamford, Hope Valley S33 0BE, UKSK28B202501/05/20251
Pheosia gnomaCromford MoorSK25X202501/05/20253adult
Pheosia gnomaFroggatt, Hope ValleySK27N202503/05/20252adult
Pheosia gnomaCote Heath Allotments, Buxton SK07R202517/05/20251adult
Pheosia gnomaSpring Wood, CalkeSK32W202525/05/20251adult
Pheosia gnomaBelperSK34U202501/05/20251adult
Pheosia gnomaMarkham Vale DerbyshireSK47K202511/05/20252adult
Pheosia gnomaMarkham Vale DerbyshireSK47K202518/05/20251adult
Pheosia gnomaMarkham Vale DerbyshireSK47L202528/04/202522adult
Pheosia gnomaBelperSK34N202530/04/20251adult
Pheosia gnomaMarkham Vale DerbyshireSK47K202522/04/20252adult
Pheosia gnomaMarkham Vale DerbyshireSK47K202528/04/20254adult
Pheosia gnomaLadycroft Ave, BuxtonSK07S202517/04/20251adult
Pheosia gnomamy gardenSK36U202525/04/20251adult
Pheosia gnomaFroggatt, Hope ValleySK27N202526/04/20253adult
Pheosia gnomaMy gardenSK36U202530/04/20251adult
Pheosia gnomaMidway, Derbys.SK32A202527/04/20251adult
Pheosia gnomaGlossop, Hague Street, Hay meadowSK09G202407/09/20241adult
Pheosia gnomaCharlesworth, Cown Edge LandslideSK09A202402/09/20241adult
Pheosia gnomaLongdendale, Wildboar Clough WoodlandSK09U202403/09/20241adult
Pheosia gnomaBirch ValeSK08I202413/08/20242adult
Pheosia gnomaMellorSJ98Z202414/08/20243adult
Pheosia gnomaFlorence road, SheffieldSK38L202409/08/20241adult
Pheosia gnomaWoodland AveSK43R202409/08/20241adult
Pheosia gnomaStonebroom.SK45E202429/08/20241adult
Pheosia gnomaMellorSJ98Z202404/08/20241adult
Pheosia gnomaLongdendale, Wildboar Clough WoodlandSK09U202411/08/202421adult
Pheosia gnomaBelperSK34U202410/08/20241adult
Pheosia gnomaWirksworth MoorSK35B202404/08/20241adult
Pheosia gnomaWirksworth MoorSK35B202407/08/20242adult
Pheosia gnomaBirch ValeSK08I202423/08/20241adult
Pheosia gnomaMellorSJ98Z202416/08/20241adult
Pheosia gnomaWoodland AveSK43R202416/08/20241adult
Pheosia gnomaBelperSK34N202401/08/20241adult
Pheosia gnomaNorton Lees, Sheffield (VC57)SK38L202412/08/20241adult
Pheosia gnomaBelperSK34N202405/08/20241adult
Pheosia gnomaDerbyshire Wild Life Trust Long CloughSK09G202423/08/20242adult
Pheosia gnomaMarkham Vale DerbyshireSK47K202409/08/20242adult
Pheosia gnomaBirch ValeSK08I202403/08/20241adult
Pheosia gnomaupper cromford gardenSK25Y202414/08/20241adult
Pheosia gnomaFroggatt, Hope ValleySK27N202411/08/20241adult
Pheosia gnomaBirch ValeSK08I202426/08/20241adult
Pheosia gnomaMellorSJ98Z202418/08/20241adult
Pheosia gnomaSandiacre GardenSK43T202410/08/20241adult
Pheosia gnomaMellorSJ98Z202429/08/20241adult
Pheosia gnomaBelperSK34U202403/08/20241adult
Pheosia gnomaGlossop, Gnat Hole Rough FieldsSK09L202401/08/20243adult
Pheosia gnomaMellorSJ98Z202407/08/20241adult
Pheosia gnomaGlossop, Hague Street, Hay meadowSK09G202427/08/20241adult
Pheosia gnomaMarkham Vale DerbyshireSK47K202412/08/20243adult
Pheosia gnomaBirch ValeSK08I202409/08/20242adult
Pheosia gnomaLadycroft Ave, BuxtonSK07S202405/08/20242adult
Pheosia gnomaBirch ValeSK08I202428/08/20242adult
Pheosia gnomaStonebroom.SK45E202406/08/20241adult
Pheosia gnomaBelperSK34U202404/08/20241adult
Pheosia gnomaDerbyshire Wild Life Trust Long CloughSK09G202404/08/20248adult
Pheosia gnomaLower Cromford GardenSK25Y202409/08/20241adult
Pheosia gnomaDarley BridgeSK26Q202414/08/20241
Pheosia gnomaBirch ValeSK08I202411/08/20241adult
Pheosia gnomaMellorSJ98Z202423/07/20241adult
Pheosia gnomaClover Close, ElvastonSK43B202429/07/20241adult
Pheosia gnomaStaveley DerbyshireSK47H202429/07/20241adult
Pheosia gnomaLongdendale, Pasture WoodSK09U202426/07/20242adult
Pheosia gnomaBelperSK34N202430/07/20242adult
Pheosia gnomaBirch ValeSK08I202431/07/20241adult
Pheosia gnomaFroggatt, Hope ValleySK27N202424/07/20241adult
Pheosia gnomaBlackshaw Farm, Little Hayfield, High Peak SK22 2NS, UKSK08J202417/07/20241
Pheosia gnomaDrakelow, Derbys.SK22F202422/07/20242adult
Pheosia gnomaMarkham Vale DerbyshireSK47L202425/07/20248adult
Pheosia gnomaDerbyshire Wild Life Trust Long CloughSK09G202405/07/20241adult
Pheosia gnomaBelperSK34N202429/07/20243adult
Pheosia gnomaDerbyshire Wild Life Trust Herod CloughSK09G202429/07/202411adult
Pheosia gnomaBirch ValeSK08I202409/07/20241adult
Pheosia gnomaWhitleSJ98Y202419/07/20241adult
Pheosia gnomaLadycroft Ave, BuxtonSK07S202414/07/20241adult
Pheosia gnomaDerbyshire Wild Life Trust Long CloughSK09G202420/07/20241adult
Pheosia gnomaLadycroft Ave, BuxtonSK07S202429/07/20242adult
Pheosia gnomaBirch ValeSK08I202417/07/20242adult
Pheosia gnomaOwler Bar, Sheffield S17 3BQ, UKSK27U202424/07/20241
Pheosia gnomaLadycroft Ave, BuxtonSK07S202419/07/20241adult
Pheosia gnomaGlossop, Hague Street, Hay meadowSK09G202423/07/20241adult
Pheosia gnomaHigh Leas Farm, RiberSK35D202428/07/20241adult
Pheosia gnomaShallcross Avenue, Whaley BridgeSK07E202431/07/20241
Pheosia gnomaBirch ValeSK08I202426/07/20243adult
Pheosia gnomaFroggatt, Hope ValleySK27N202429/06/20241adult
Pheosia gnomaStaveley DerbyshireSK47H202419/06/20241adult
Pheosia gnomaHigh Leas Farm, RiberSK35D202429/06/20242adult
Pheosia gnomaDerbyshire Wild Life Trust Long CloughSK09G202403/06/20242adult
Pheosia gnomaBelperSK34N202406/05/20241adult
Pheosia gnomaChaddesden, DerbySK33T202405/05/20241adult
Pheosia gnomaLadycroft Ave, BuxtonSK07S202425/05/20241adult
Pheosia gnomaBirch ValeSK08I202424/05/20241adult

Sensible limit reached – too many records to list on the page

Swallow Prominent       Pale Prominent

Copyright Tony Davison © 2025 www.derbyshiremoths.org

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