72.022 BF2063  –  Erebidae –  Arctiinae – Diaphora mendica – Muslin Moth Adult Macro:  CAT 1 – Distinctive species unlikely to be confused with others –       PDF Icon – click for Adult Macro Verification Guidelines

Blue –  Generally Common / Widespread        day-flying – Day-flying
Taxonomy:   Macro  >> Erebidae  >> Arctiinae
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: Smaller than the ermines and always with a whitish or grey-brown abdomen. The broad forewings of the male are a dove grey colour with a sprinkling of black spots scattered across the surface. The females are white.
Distribution:  A resident species in Derbyshire that is widely distributed but generally uncommon. Largest population densities are found in the Trent Valley and the Coal Measures. Present in small numbers in the limestone dales.
Flight Period: May /  June /  –  On the wing May – June. Photographed: Yes –  Photographed By: Tony Davison  © All Rights Reserved
*** Last updated on 6 May 2025 by RP ***
Wingspan: 28-38mm
Forewing: M 14-17mm. F 17-19mm
Food Plant: Low-lying herbaceous plants and shrubs.
Recorded dates for Common [Blue codeBlue-coded ] moths are not stored on the website at this current time.

IMAGES BELOW:  Melbourne, South Derbyshire – Tony Davison ©

Distribution Map for Diaphora mendica

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 901 records
    ↳ 36 from After 2025
    ↳ 152 from 2020 - 2024
    ↳ 713 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: Diaphora mendica

Monthly Counts By Year: Diaphora mendica

Recordings By Year: Diaphora mendica

Hectad (10kmx10km) Coverage: Diaphora mendica

Flight Periods – Indicative –vs– Recorded Data
Diaphora mendica

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 - Diaphora mendica – 901 records available

Listed by Year - descending

TaxonSite NameTetradYearDateCount
Diaphora mendicaIngleby Ave, DerbySK33L202519/04/20251
Diaphora mendicaIlkeston, DerbyshireSK44K202508/05/20251
Diaphora mendicaMelSK32X202517/04/20252
Diaphora mendicaGreenhills BakewellSK26E202528/04/20251
Diaphora mendicaupper cromford gardenSK25Y202505/04/20251
Diaphora mendicaShirland - Hallfieldgate LaneSK35Z202502/05/20253
Diaphora mendicaMidway, Derbys.SK32A202530/03/20251
Diaphora mendicaupper cromford gardenSK25Y202501/05/20252
Diaphora mendicaHall Wood, CarsingtonSK25R202530/04/20252
Diaphora mendicaMy gardenSK36U202530/04/20251
Diaphora mendicaFroggatt, Hope ValleySK27N202526/04/20251
Diaphora mendicaMidway, Derbys.SK32A202524/04/20251
Diaphora mendicaAston-on-Trent, DerbyshireSK43A202524/04/20254
Diaphora mendicaupper cromford gardenSK25Y202520/04/20251
Diaphora mendicaAston-on-Trent, DerbyshireSK43A202508/05/20252
Diaphora mendicaInkersall gardenSK47G202518/04/20251
Diaphora mendicaGreenhills BakewellSK26E202530/04/20251
Diaphora mendicaAston-on-Trent, DerbyshireSK43A202504/04/20251
Diaphora mendicaAston-on-Trent, DerbyshireSK43A202503/05/20251
Diaphora mendicaInkersall gardenSK47G202503/05/20253
Diaphora mendicaupper cromford gardenSK25Y202530/04/20252
Diaphora mendicaupper cromford gardenSK25Y202528/04/20251
Diaphora mendicaAston-on-Trent, DerbyshireSK43A202528/04/20251
Diaphora mendicamy gardenSK36U202525/04/20251
Diaphora mendicaupper cromford gardenSK25Y202522/04/20251
Diaphora mendicaFroggattSK27N202519/04/20252
Diaphora mendicaOld Marble Mill, Ashford in the Water SK16Z202507/05/20251
Diaphora mendicaMelbourne, DerbyshireSK32X202511/04/20251
Diaphora mendicaMidway, Derbys.SK32A202501/05/20256
Diaphora mendicaStaveley DerbyshireSK47H202528/03/20251
Diaphora mendicaCromford MoorSK25X202501/05/20251
Diaphora mendicaBelperSK34N202530/04/20252
Diaphora mendicaupper cromford gardenSK25Y202529/04/20252
Diaphora mendicaMidway, Derbys.SK32A202527/04/20251
Diaphora mendicaMelbourne, DerbyshireSK32X202527/04/20251
Diaphora mendicaStaveley DerbyshireSK47H202524/04/20251
Diaphora mendicaBuxton SK17, UKSK07R202417/05/20241
Diaphora mendicaFindern, Derbyshire, DE65 6AZSK33A202401/05/20244
Diaphora mendicaStonebroomSK45E202410/05/20241
Diaphora mendicaSandiacre GardenSK43T202406/05/20241
Diaphora mendicaupper cromford gardenSK25Y202411/05/20242
Diaphora mendicaCross Green, Matlock DE4 2JW, UKSK26Q202408/05/20241
Diaphora mendicaSandiacreSK43T202403/05/20241
Diaphora mendicaAllestree, DerbySK33P202401/05/20242
Diaphora mendicaSandiacreSK43T202413/04/20242
Diaphora mendicaStaveley DerbyshireSK47H202401/05/20241
Diaphora mendicaHall Lane ponds , Staveley DerbyshireSK47K202430/04/20241
Diaphora mendicaShirland - Hallfieldgate LaneSK35Z202411/05/20241
Diaphora mendicaAllestree, DerbySK33P202412/05/20241
Diaphora mendicaPark Head, CrichSK35M202418/05/20244
Diaphora mendicaAllestree, DerbySK33P202408/05/20241
Diaphora mendicaNinelands RoadSK28F202411/05/20241
Diaphora mendicaAllestree, DerbySK33P202401/05/20242
Diaphora mendicaChaddesden, DerbySK33T202408/05/20243
Diaphora mendicaMidway, Derbys.SK32A202420/04/20241
Diaphora mendicaLower Cromford GardenSK25Y202418/05/20242
Diaphora mendicaFindern, Derbyshire, DE65 6AZSK33A202404/05/20243
Diaphora mendicaBrockwell Chesterfield , Derbyshire.SK37Q202411/05/20242
Diaphora mendicaFindern, Derbyshire, DE65 6AZSK33A202430/04/20243
Diaphora mendicaPark Head, Crich.SK35M202411/05/20246
Diaphora mendicaLower Cromford GardenSK25Y202409/05/20242
Diaphora mendicaupper cromford gardenSK25Y202406/05/20241
Diaphora mendicaSandiacreSK43T202401/05/20242
Diaphora mendicaHaddon House Farm, Bakewell DE45 1BN, UKSK26I202405/05/20241
Diaphora mendicaShirland - Hallfieldgate LaneSK35Z202413/07/20243
Diaphora mendicaLower Cromford GardenSK25Y202401/05/20241
Diaphora mendicaShirland - Hallfieldgate LaneSK35Z202428/06/20241
Diaphora mendicaAshford Marble MillSK16Z202409/05/20241
Diaphora mendicaupper cromford gardenSK25Y202429/04/20241
Diaphora mendicaShirland - Hallfieldgate LaneSK35Z202430/04/20241
Diaphora mendicaAllestree, DerbySK33P202411/05/20241
Diaphora mendicaupper cromford gardenSK25Y202425/05/20241
Diaphora mendicaAllestree, DerbySK33P202407/05/20242
Diaphora mendicaIlkeston, DerbyshireSK44K202409/05/20241
Diaphora mendicaWoodland AveSK43R202406/05/20241
Diaphora mendicaFindern, Derbyshire, DE65 6AZSK33A202406/05/20245
Diaphora mendicaChaddesden, DerbySK33T202407/05/20241
Diaphora mendicaLower Cromford GardenSK25Y202417/05/20242
Diaphora mendicaFindern, Derbyshire, DE65 6AZSK33A202402/05/20247
Diaphora mendicaPark Head, Crich.SK35M202412/05/20242
Diaphora mendicaSandiacre GardenSK43T202411/05/20241
Diaphora mendicaStonebroomSK45E202409/05/20242
Diaphora mendicaFroggatt, Hope ValleySK27N202410/05/20242
Diaphora mendicaLower Cromford GardenSK25Y202408/05/20241
Diaphora mendicaMelbourne, DerbyshireSK32X202406/05/20241
Diaphora mendicaLower Cromford GardenSK25Y202402/05/20241
Diaphora mendicaStonebroomSK45E202401/05/20242
Diaphora mendicaKing's NewtonSK32Y202415/05/20241
Diaphora mendicaInkersall gardenSK47G202428/04/20241
Diaphora mendicaLadycroft Ave, BuxtonSK07S202418/05/20241
Diaphora mendicaAllestree, DerbySK33P202410/05/20241
Diaphora mendicaupper cromford gardenSK25Y202424/05/20241
Diaphora mendicaAllestree, DerbySK33P202406/05/20241
Diaphora mendicaBuxton (w)SK07R202417/05/20241
Diaphora mendicaWoodland AveSK43R202408/04/20241
Diaphora mendicaFindern, Derbyshire, DE65 6AZSK33A202405/05/20246
Diaphora mendicaChaddesden, DerbySK33T202406/05/20241
Diaphora mendicaFindern GardenSK33A202312/05/20233
Diaphora mendicaFindern GardenSK33A202305/05/20231
Diaphora mendicaWoodland AveSK43R202309/05/20232

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

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