Ostrinia nubilalis       Udea lutealis
63.031 BF1395  –  Crambidae –  Spilomelinae – Udea ferrugalis – Rusty Dot Pearl – (Hübner, 1796) Adult Micro:  CAT 1 – Distinctive Species –       PDF Icon – click for General Verification Guidelines  |   PDF Icon – click for Specific Verification Guidelines
Green –  Rare / Uncommon / Scarce       orange – Migrant
Taxonomy:   Micro   >>  Crambidae  >> Spilomelinae
ID Difficulty:  green  – easy to identify, generally distinctive and unlikely to be confused with other species.
ID pointers: The orange rusty-brown ground colour, black markings and two black spots in each forewing make this an easy pyralid to identify. Note also the white legs.
Distribution:  A regular migrant species recorded in small numbers during the autumn.
Flight Period: August /  September /  October /  –  Usually occurs during August – November. Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –  Photographed By: Tony Davison  © All Rights Reserved
*** Last updated on 21 June 2025 by TD ***
Wingspan: 18-22mm
 Food Plant: Herbaceous plants.
Last Recorded By – Not Recorded
Last Recorded General Area – Not Recorded
IMAGES BELOW:  Melbourne, Derbyshire – Tony Davison© 

Udea ferrugalis - Rusty Dot Pearl
Udea ferrugalis – Rusty Dot Pearl
Rusty Dot Pearl
Udea ferrugalis – Rusty Dot Pearl
Udea ferrugalis - Rusty Dot Pearl
Rusty Dot Pearl

63.031 BF1395 - Rusty Dot Pearl 9159592 63.031 BF1395 - Udea ferrugalis - Rusty Dot Pearl - 16th October 2014 - Melbourne, Derbyshire - Tony Davison©
63.031 BF1395-udea-ferrugalis 63.031 BF1395 - Udea ferrugalis - Rusty Dot Pearl 12th October 2011- Melbourne, Derbyshire - Tony Davison©

Distribution Map for Udea ferrugalis

Found 118 records
    ↳ 31 from After 2025
    ↳ 41 from 2020 - 2024
    ↳ 46 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.

Land-cover * shows the variety of land-cover within the VC57 area, based on the CORINE (Coordination of Information on the Environment) forty-four thematic classes of land-cover. This will show, to a greater or lesser degree, the number and variety of moths found in different land-cover types. The UK continues to operate within the Copernicus programme, with the UK Centre for Ecology & Hydrology (UKCEH) providing Corine Land Cover (CLC) datasets for the UK and its territories.


NBN Atlas UK Distribution for – Udea ferrugalis

⚠️ 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: Udea ferrugalis
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Udea ferrugalis
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: Udea ferrugalis
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Udea ferrugalis
AGR: 0.26%   |   Total % Change: 6.5%


CUSUM Analysis: Udea ferrugalis
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 11 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 7 (July) 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 2019, 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: Udea ferrugalis
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Udea ferrugalis
( 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 - Udea ferrugalis – 118 records available

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

TaxonSite NameTetradYearDateCountStageSource
Udea ferrugalisNetherside Drive, Chellaston, DerbySK33V202502/09/20251adultvc57_irecords_extract
Udea ferrugalisWingerworth, DerbyshireSK36Y202504/09/20251adultvc57_irecords_extract
Udea ferrugalisWingerworth, DerbyshireSK36Y202505/09/20251adultvc57_irecords_extract
Udea ferrugalisAston-on-Trent, DerbyshireSK43A202506/09/20251adultvc57_irecords_extract
Udea ferrugalisfindern, derbyshireSK33A202505/09/20251adultvc57_irecords_extract
Udea ferrugalisfindern, derbyshireSK33A202507/09/20252adultvc57_irecords_extract
Udea ferrugalisChellaston, Derby, DerbySK33V202508/09/20251adultvc57_irecords_extract
Udea ferrugalisChellaston, Derby, DerbySK33V202502/09/20251adultvc57_irecords_extract
Udea ferrugalisFindern, DerbyshireSK33A202511/08/20251adultvc57_irecords_extract
Udea ferrugalisLong eaton, Wensleydale RoadSK43R202516/08/20251adultvc57_irecords_extract
Udea ferrugalisAllestree, DerbySK33P202516/08/20251adultvc57_irecords_extract
Udea ferrugalisBelperSK34N202520/08/20251adultvc57_irecords_extract
Udea ferrugalissheffieldSK38M202515/08/20251adultvc57_irecords_extract
Udea ferrugalisInkersall gardenSK47G202523/08/20251adultvc57_irecords_extract
Udea ferrugalisLittleove, DerbySK33G202522/08/20251adultvc57_irecords_extract
Udea ferrugalisBelperSK34U202523/08/20251adultvc57_irecords_extract
Udea ferrugalisStoney Clouds, meadowSK43T202523/08/20251adultvc57_irecords_extract
Udea ferrugalisupper cromford gardenSK25Y202518/08/20251adultvc57_irecords_extract
Udea ferrugalisFindern, DerbyshireSK33A202524/08/20252adultvc57_irecords_extract
Udea ferrugalisAllestree, DerbySK33P202527/08/20251adultvc57_irecords_extract
Udea ferrugalisIngleby Ave, DerbySK33L202526/08/20251adultvc57_irecords_extract
Udea ferrugalisFindern, DerbyshireSK33A202527/08/20251adultvc57_irecords_extract
Udea ferrugalisChaddesden, DerbySK33T202523/08/20251adultvc57_irecords_extract
Udea ferrugalisInkersall gardenSK47G202530/08/20251adultvc57_irecords_extract
Udea ferrugalisfindern, derbyshireSK33A202529/08/20251adultvc57_irecords_extract
Udea ferrugalisIlkeston, DerbyshireSK44K202529/08/20251adultvc57_irecords_extract
Udea ferrugalisMelbourne, DerbyshireSK32X202501/07/20251adultvc57_irecords_extract
Udea ferrugalisMidway, Derbys.SK32A202513/07/20251adultvc57_irecords_extract
Udea ferrugalisFindern, DerbyshireSK33A202513/07/20251adultvc57_irecords_extract
Udea ferrugalisBelperSK34N202524/07/20251adultvc57_irecords_extract
Udea ferrugalisLadycroft Ave, BuxtonSK07S202530/06/20251adultvc57_irecords_extract
Udea ferrugalisOld Park Plantation, BeeleySK26U202403/11/20241Adultvc57_irecords_extract
Udea ferrugalisFindern, Derbyshire, DEAZSK33A202401/11/20241adultvc57_irecords_extract
Udea ferrugalisBelper, DerbyshireSK34N202424/10/20242adultvc57_irecords_extract
Udea ferrugalisLower Cromford GardenSK25Y202411/08/20241adultvc57_irecords_extract
Udea ferrugalisBelperSK34U202412/08/20241adultvc57_irecords_extract
Udea ferrugalisWoodland AveSK43R202308/10/20231adultvc57_irecords_extract
Udea ferrugalisShirland - Hallfieldgate LaneSK35Z202329/10/20231Adultvc57_irecords_extract
Udea ferrugalisSandiacreSK43T202308/10/20231adultvc57_irecords_extract
Udea ferrugalisLadycroft AveSK07S202308/10/20231adultvc57_irecords_extract
Udea ferrugalisLadycroft AveSK07S202318/10/20231adultvc57_irecords_extract
Udea ferrugalisBelperSK34U202309/10/20231adultvc57_irecords_extract
Udea ferrugalisMorley RetreatSK34V202306/09/20231adultvc57_irecords_extract
Udea ferrugalisMain Street, Kings NewtonSK32Y202314/09/20231Adultvc57_irecords_extract
Udea ferrugalisBelper GardenSK34P202303/09/20231adultvc57_irecords_extract
Udea ferrugalisFindern GardenSK33A202306/09/20231Adultvc57_irecords_extract
Udea ferrugalisFindern GardenSK33A202317/09/20231Adultvc57_irecords_extract
Udea ferrugalisFindern GardenSK33A202330/09/20231Adultvc57_irecords_extract
Udea ferrugalisLadycroft AveSK07S202308/09/20231adultvc57_irecords_extract
Udea ferrugalisLadycroft AveSK07S202317/09/20231adultvc57_irecords_extract
Udea ferrugalisBirch ValeSK08I202223/10/20221adultvc57_irecords_extract
Udea ferrugalisHathersage, Derbyshire, UKSK28F202220/08/20221adultvc57_irecords_extract
Udea ferrugalisDerbyshire, England, United KingdomSK07S202204/08/20221Adultvc57_irecords_extract
Udea ferrugalisBuxton SK, UKSK07S202222/08/20221Adultvc57_irecords_extract
Udea ferrugalisDerbyshire, England, United KingdomSK07S202229/08/20221Adultvc57_irecords_extract
Udea ferrugalisWoodland AveSK43R202219/08/20221adultvc57_irecords_extract
Udea ferrugalisWoodland AveSK43R202226/08/20221adultvc57_irecords_extract
Udea ferrugalisMain Street, Kings NewtonSK32Y202227/08/20221Adultvc57_irecords_extract
Udea ferrugalisLong Eaton - Marlborough RoadSK43X202205/08/20221Adultvc57_irecords_extract
Udea ferrugalisLadycroft Ave, BuxtonSK07S202221/08/20221adultvc57_irecords_extract
Udea ferrugalisLadycroft Ave, BuxtonSK07S202224/08/20221adultvc57_irecords_extract
Udea ferrugalisLadycroft AveSK07S202226/08/20222adultvc57_irecords_extract
Udea ferrugalisFindern, Derbyshire, DEAZSK33A202203/08/20221adultvc57_irecords_extract
Udea ferrugalisFindern, Derbyshire, DEAZSK33A202223/08/20221adultvc57_irecords_extract
Udea ferrugalisFindern, Derbyshire, DEAZSK33A202226/08/20221adultvc57_irecords_extract
Udea ferrugalisFindern, Derbyshire, DEAZSK33A202225/07/20221adultvc57_irecords_extract
Udea ferrugalisBuxton SK, UKSK07S202109/10/20211Adultvc57_irecords_extract
Udea ferrugalisLong Eaton - Marlborough RoadSK43X202116/10/20211Adultvc57_irecords_extract
Udea ferrugalisAllestree, DerbySK33P202114/10/20211adultvc57_irecords_extract
Udea ferrugalisBriar Close, Newhall, SwadlincoteSK22V202116/10/20211adultDanes_2019-2021
Udea ferrugalisMidway, Derbys.SK32A202110/08/20211adultvc57_irecords_extract
Udea ferrugalisFindern, Derbyshire, DEAZSK33A202009/11/20202adultvc57_irecords_extract
Udea ferrugalisFindern, Derbyshire, DEAZSK33A201914/09/20191adultvc57_irecords_extract
Udea ferrugalisThe Mays, Malthouse Lane, FroggattSK27N201931/08/20191adultDanes_2019-2021
Udea ferrugalisMain Street, Kings NewtonSK32Y201915/07/20191Adultvc57_irecords_extract
Udea ferrugalisNorton LeesSK38L201916/07/20191adultDanes_2019-2021
Udea ferrugalisMain Street, Kings NewtonSK32Y201707/09/20171Adultvc57_irecords_extract
Udea ferrugalisMain Street, Kings NewtonSK32Y201705/09/20171Adultvc57_irecords_extract
Udea ferrugalisBirch ValeSK08I201707/08/20171adultvc57_irecords_extract
Udea ferrugalisBackgarden MarehaySK34Z201606/09/20161adultvc57_irecords_extract
Udea ferrugalisBackgarden MarehaySK34Z201630/08/20161adultvc57_irecords_extract
Udea ferrugalisBelperSK34U201513/09/20151adultvc57_irecords_extract
Udea ferrugalisLadycroft AveSK07S201422/11/20141adultvc57_irecords_extract
Udea ferrugalisMelbourne, DerbyshireSK32X201416/10/20141adultvc57_irecords_extract
Udea ferrugalisShirland - Hallfieldgate LaneSK35Z201430/10/20141Adultvc57_irecords_extract
Udea ferrugalisElgar Drive,Sawley,Long EatonSK43R201109/11/20111Adultvc57_danes_bc_data
Udea ferrugalisMelbourne, DerbyshireSK32X201112/10/20111adultvc57_irecords_extract
Udea ferrugalisBackgarden MarehaySK34Z201109/10/20111adultvc57_irecords_extract
Udea ferrugalisSchool Close,Parkway Gardens,Darley DaleSK26R201112/10/20111Adultvc57_danes_bc_data
Udea ferrugalisSpinney Hill,MelbourneSK32X201113/10/20111Adultvc57_danes_bc_data
Udea ferrugalisBamford St,RipleySK34Z201109/10/20111Adultvc57_danes_bc_data
Udea ferrugalisBackgarden MarehaySK34Z201119/09/20111adultvc57_irecords_extract
Udea ferrugalisBamford St,RipleySK34Z201119/09/20111Adultvc57_danes_bc_data
Udea ferrugalisLadycroft Ave,BuxtonSK07S201123/09/20111Adultvc57_danes_bc_data
Udea ferrugalisBuxton SK, UKSK07S201108/07/20111Adultvc57_irecords_extract
Udea ferrugalisBuxton SK, UKSK07S201108/07/20111Adultvc57_irecords_extract
Udea ferrugalisDovedaleSK15K201111/07/20111Adultvc57_danes_bc_data
Udea ferrugalisGeorge St,BelperSK34N201110/07/20111Adultvc57_danes_bc_data
Udea ferrugalisDovedaleSK15K201111/07/20111Adultvc57_danes_bc_data
Udea ferrugalisThe Mays,Malthouse Lane,FroggattSK27N200711/08/20071Adultvc57_danes_bc_data
Udea ferrugalisEdgecote Drive,Newhall,SwadlincoteSK22V200624/10/20061Adultvc57_danes_bc_data
Udea ferrugalisMelbourne, DerbyshireSK32X200615/09/20061adultvc57_irecords_extract
Udea ferrugalisMain Street, Kings NewtonSK32Y200614/09/20061Adultvc57_irecords_extract
Udea ferrugalisEdgecote Drive,Newhall,SwadlincoteSK22V200615/09/20061Adultvc57_danes_bc_data
Udea ferrugalisSpinney Hill,MelbourneSK32X200615/09/20061Adultvc57_danes_bc_data
Udea ferrugalisMidway Rd,Midway,SwadlincoteSK32A200624/09/20061Adultvc57_danes_bc_data
Udea ferrugalisEdgecote Drive,Newhall,SwadlincoteSK22V200601/09/20061Adultvc57_danes_bc_data
Udea ferrugalisMain St,Kings Newton,MelbourneSK32Y200614/09/20061Adultvc57_danes_bc_data
Udea ferrugalisSchool Close,Parkway Gardens,Darley DaleSK26R200110/11/20011Adultvc57_danes_bc_data
Udea ferrugalisShipley Hill, Shipley Park, IlkestonSK44H199603/09/19961Adultvc57_danes_bc_data
Udea ferrugalisDeerlands Rd, Ashgate, ChesterfieldSK37K199610/08/19961Adultvc57_danes_bc_data
Udea ferrugalisDeerlands Rd, Ashgate, ChesterfieldSK37K199610/08/19961Adultvc57_danes_bc_data
Udea ferrugalisDeerlands Rd, Ashgate, ChesterfieldSK37K199613/06/19961Adultvc57_danes_bc_data
Udea ferrugalisRepton (site not precise)SK32B198120/09/19811Adultvc57_danes_bc_data
Udea ferrugalisShardlow Hall, Shardlow, Long EatonSK43F198120/07/19811Adultvc57_danes_bc_data
Udea ferrugalisShardlow Hall, Shardlow, Long EatonSK43F198122/07/19811Adultvc57_danes_bc_data
Udea ferrugalisThreepieces, Veron Lane, Kelstedge, AshoverSK36G197903/10/19791Adultvc57_danes_bc_data
Udea ferrugalisMain St,Kings Newton,MelbourneSK32Y190525/06/19051Adultvc57_danes_bc_data

Ostrinia nubilalis       Udea lutealis

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