Marbled Brown       Iron Prominent
71.011 BF2015  –  Notodontidae –  Notodontinae – Drymonia ruficornis – Lunar Marbled Brown – (Hufnagel, 1766) Adult Macro:  CAT 2 – Can be confused with other species – Can be confused with other species       PDF Icon – click for Adult Macro Verification Guidelines
Green –  Rare / Uncommon / Scarce   
Taxonomy:   Macro   >>  Notodontidae  >> Notodontinae
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
ID pointers: A thick-set and heavy looking moth that is an overall grey-brown in colour. An obvious comma mark in the pale creamy white central cross band on forewing.
Distribution:  A resident species that is generally uncommon but widely distributed in Derbyshire. Found more often in ancient woodlands throughout the lowland areas of the county.
Flight Period: April /  May /  –  On the wing April – May – One generation Moth Activity: Nocturnal   – and is attracted to light Photographed: Yes –  Photographed By: Tony Davison  © All Rights Reserved
*** Last updated on 2 October 2025 by RP ***
Wingspan: 35-40mm
Forewing: 16-20mm Food Plant: Deciduous woodland.
Last Recorded By – Not Recorded
Last Recorded General Area – Not Recorded
Selected Images:  Melbourne, Derbyshire – Tony Davison ©

Lunar Marbled Brown - Notodontidae - Drymonia ruficornis
Lunar Marbled Brown – Drymonia ruficornis
Lunar Marbled Brown - Notodontidae - Drymonia ruficornis


Image Gallery

Lunar Marbled Brown - 11th April 2025 - Melbourne - Tony Davison Lunar Marble Brown - Chaddesden - Martin Roome©. Lunar Marbled Brown - Melbourne - Tony Davison©

Distribution Map for Drymonia ruficornis

Found 146 records
    ↳ 22 from After 2025
    ↳ 41 from 2020 - 2024
    ↳ 83 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 – Drymonia ruficornis

⚠️ 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: Drymonia ruficornis
( data includes both Larvae and Adult Stages )

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


First/Last Recorded Dates: Drymonia ruficornis
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: Drymonia ruficornis
( All data includes both Larvae and Adult Stages )
Annual Growth Rate (AGR): Drymonia ruficornis
AGR: 2.29%   |   Total % Change: 68.2%


CUSUM Analysis: Drymonia ruficornis
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 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 2007, reaching above average levels. The lowest population point occurred near 2006, 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: Drymonia ruficornis
( data includes both Larvae and Adult Stages )

Flight Periods – Indicative –vs– Recorded Data
Drymonia ruficornis
( 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 - Drymonia ruficornis – 146 records available

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

Site NameTetradDateCountStageSource
Stonebroom.SK45E02/05/20251adultvc57_irecords_extract
Findern, DerbyshireSK33A02/05/20251adultvc57_irecords_extract
Findern, DerbyshireSK33A01/05/20251adultvc57_irecords_extract
Chaddesden, DerbySK33T01/05/20251adultvc57_irecords_extract
Belper, DerbyshireSK34N01/05/20251adultvc57_irecords_extract
Hall Wood, CarsingtonSK25R30/04/20259adultvc57_irecords_extract
Belper, DerbyshireSK34N30/04/20253adultvc57_irecords_extract
StonebroomSK45E29/04/20253adultvc57_irecords_extract
Belper, DerbyshireSK34N29/04/20252adultvc57_irecords_extract
Markham Vale DerbyshireSK47K28/04/20252adultvc57_irecords_extract
Belper, DerbyshireSK34N28/04/20251adultvc57_irecords_extract
Norton Lees, SheffieldSK38L27/04/20251adultvc57_irecords_extract
Markham Vale DerbyshireSK47K22/04/20251adultvc57_irecords_extract
BelperSK34N17/04/20251adultvc57_irecords_extract
Belper, DerbyshireSK34N17/04/20251adultvc57_irecords_extract
SheffieldSK38M14/04/20251adultvc57_irecords_extract
Norton Lees, SheffieldSK38L12/04/20252adultvc57_irecords_extract
Ilkeston, DerbyshireSK44K12/04/20251adultvc57_irecords_extract
Belper, DerbyshireSK34N12/04/20251adultvc57_irecords_extract
Melbourne, DerbyshireSK32X11/04/20251adultvc57_irecords_extract
Markham Vale DerbyshireSK47K11/04/20251adultvc57_irecords_extract
Findern, DerbyshireSK33A11/04/20251adultvc57_irecords_extract
Chaddesden, DerbySK33T07/05/20241adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A06/05/20241adultvc57_irecords_extract
Chaddesden, DerbySK33T05/05/20242adultvc57_irecords_extract
Staveley DerbyshireSK47H01/05/20241adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A01/05/20241adultvc57_irecords_extract
Midway, Derbys.SK32A01/05/20241adultvc57_irecords_extract
Staveley DerbyshireSK47H01/05/20241adultvc57_irecords_extract
Allestree, DerbySK33P30/04/20241adultvc57_irecords_extract
Norton Lees, Sheffield, UKSK38L30/04/20241Adultvc57_irecords_extract
Allestree, DerbySK33P30/04/20241adultvc57_irecords_extract
Chaddesden Wood, Oakwood, DerbySK33Z15/04/20246not recordedvc57_irecords_extract
Chaddesden WoodSK33Z15/04/20246adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A14/04/20241adultvc57_irecords_extract
Norton Lees, Sheffield, UKSK38L12/04/20241Adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A12/04/20242adultvc57_irecords_extract
Melbourne gardenSK32X11/04/20241adultvc57_irecords_extract
BelperSK34N11/04/20241adultvc57_irecords_extract
Markham Vale , Seymour , DerbyshireSK47L11/04/20247adultvc57_irecords_extract
Markham Vale , Seymour , DerbyshireSK47L11/04/20241adultvc57_irecords_extract
Chaddesden, DerbySK33T09/04/20241adultvc57_irecords_extract
Chaddesden, DerbySK33T09/04/20241adultvc57_irecords_extract
Woodland Avenue MothtrapSK43R04/04/20241adultvc57_irecords_extract
BelperSK34N09/05/20231adultvc57_irecords_extract
GardenSK43T07/05/20231adultvc57_irecords_extract
SandiacreSK43T07/05/20231adultvc57_irecords_extract
Findern GardenSK33A06/05/20231Adultvc57_irecords_extract
BelperSK34N01/05/20231adultvc57_irecords_extract
Findern GardenSK33A29/04/20231Adultvc57_irecords_extract
Findern GardenSK33A22/04/20231Adultvc57_irecords_extract
Home, GardenSK43T16/04/20231adultvc57_irecords_extract
SandiacreSK43T16/04/20231adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A02/05/20222adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A30/04/20222adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A22/04/20221adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K22/04/20221adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A18/04/20221adultvc57_irecords_extract
Kirk Hallam, IlkestonSK44K17/04/20221adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A20/04/20211adultvc57_irecords_extract
Briar Close, Newhall, SwadlincoteSK22V20/04/20211adultDanes_2019-2021
Norton LeesSK38L27/04/20201Adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A26/04/20202adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A22/04/20192adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A21/04/20192adultvc57_irecords_extract
BelperSK34N20/04/20191adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A19/04/20193adultvc57_irecords_extract
Findern, Derbyshire, DEAZSK33A17/04/20192adultvc57_irecords_extract
Linton, Main StreetSK21T21/04/20181adultvc57_irecords_extract
Pleasley Pit CP, PleasleySK46X08/05/20161Adultvc57_danes_bc_data
Hillside, Findern, DerbySK33A06/05/20161Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S23/04/20111Adultvc57_danes_bc_data
Clough Wood,Darley DaleSK26K22/04/20112Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S21/04/20111Adultvc57_danes_bc_data
Hardhurst Rd, Alvaston, DerbySK33W19/04/20111Adultvc57_danes_bc_data
Briar Close,Newhall,SwadlincoteSK22V16/04/20111Adultvc57_danes_bc_data
Briar Close,Newhall,SwadlincoteSK22V16/04/20111Adultvc57_danes_bc_data
Wood Lane,Newhall,SwadlincoteSK22V08/04/20111Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S08/04/20111Adultvc57_danes_bc_data
Wood Lane, Newhall, SwadlincoteSK22V08/04/20111Adultvc57_danes_bc_data
Lowes Hill,RipleySK35V26/04/20101Adultvc57_danes_bc_data
Catton Wood, Catton, SwadlincoteSK21C25/04/20104Adultvc57_danes_bc_data
Foremark Resr, TicknallSK32H18/04/20103Adultvc57_danes_bc_data
Drakelow NR (fen area), Burton on TrentSK22F09/04/20101Adultvc57_danes_bc_data
Drakelow NR (fen area), Burton on TrentSK22F09/04/20101Adultvc57_danes_bc_data
Whitehollows Cottages,Box Lane,TicknallSK32K02/06/20092Adultvc57_danes_bc_data
Whitehollows Cottages,Box Lane,TicknallSK32K31/05/20097Adultvc57_danes_bc_data
Whitehollows Cottages,Box Lane,TicknallSK32K28/05/20094Adultvc57_danes_bc_data
Whitehollows Cottages,Box Lane,TicknallSK32K23/05/20092Adultvc57_danes_bc_data
Whitehollows Cottages,Box Lane,TicknallSK32K22/04/20092Adultvc57_danes_bc_data
Whitehollows Cottages,Box Lane,TicknallSK32K14/04/20091Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S13/04/20091Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S11/05/20081Adultvc57_danes_bc_data
Carvers Rocks (old toilet block area), Hartshorne, SwadlincoteSK32G10/05/20081Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S10/05/20081Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S09/05/20084Adultvc57_danes_bc_data
Lowes Hill,RipleySK35V08/05/20081Adultvc57_danes_bc_data
Carsington Resr (Rangers' Base)SK25K05/05/20081Adultvc57_danes_bc_data
Kedleston Park,DerbySK34F12/05/20071Adultvc57_danes_bc_data
Newboundmill Lane,PleasleySK56C28/04/20071Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S25/04/20071Adultvc57_danes_bc_data
Newboundmill Lane,PleasleySK56C25/04/20071Adultvc57_danes_bc_data
Calke Park Ridge from Fisherman's Car ParkSK32R24/04/200759adultvc57_irecords_extract
Calke Park,TicknallSK32R24/04/200759Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S18/04/20071Adultvc57_danes_bc_data
The Field,Shipley,IlkestonSK44M17/04/20071Adultvc57_danes_bc_data
The Field,Shipley,IlkestonSK44M17/04/20071Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S16/04/20071Adultvc57_danes_bc_data
Spinney Hill,MelbourneSK32X14/05/20061Adultvc57_danes_bc_data
Edgecote Drive,Newhall,SwadlincoteSK22V06/05/20061Adultvc57_danes_bc_data
Edgecote Drive,Newhall,SwadlincoteSK22V05/05/20061Adultvc57_danes_bc_data
Ault Hucknall,GlapwellSK46S05/05/20062Adultvc57_danes_bc_data
Melbourne, DerbyshireSK32X04/05/20061adultvc57_irecords_extract
Edgecote Drive,Newhall,SwadlincoteSK22V25/04/20042Adultvc57_danes_bc_data
Edgecote Drive,Newhall,SwadlincoteSK22V24/04/20041Adultvc57_danes_bc_data
Midway Rd,Midway,SwadlincoteSK32A24/04/20041Adultvc57_danes_bc_data
FOREMARK RESERVOIRSK32H23/04/20042adultvc57_irecords_extract
Foremark Res (boatyard), TicknallSK32G23/04/20049Adultvc57_danes_bc_data
Foremark Resr (Orange Hill wood), TicknallSK32H23/04/20042Adultvc57_danes_bc_data
Midway Rd,Midway,SwadlincoteSK32A23/04/20041Adultvc57_danes_bc_data
Main Street, Kings NewtonSK32Y07/05/20031Adultvc57_irecords_extract
Main St,Kings Newton,MelbourneSK32Y07/05/20031Adultvc57_danes_bc_data
South Wood, Calke, TicknallSK32Q15/04/20031Adultvc57_danes_bc_data
The Field,Shipley,IlkestonSK44M17/05/20021Adultvc57_danes_bc_data
The Field,Shipley,IlkestonSK44M17/05/20021Adultvc57_danes_bc_data
Midway Rd,Midway,SwadlincoteSK32A24/04/20021Adultvc57_danes_bc_data
Calke Park (site not precise), TicknallSK32R04/05/19982Adultvc57_danes_bc_data
Calke Park (site not precise), TicknallSK32R04/05/19983Adultvc57_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
Homestall Wood, Coton in the Elms, SwadlincoteSK21H12/05/19962Adultvc57_danes_bc_data
Homestall Wood, Coton in the Elms, SwadlincoteSK21H01/05/19951Adultvc57_danes_bc_data
Homestall Wood, Coton in the Elms, SwadlincoteSK21H01/05/19951Adultvc57_danes_bc_data
Wood Lane,Newhall,SwadlincoteSK22V28/04/19941Adultvc57_danes_bc_data
The Field,Shipley,IlkestonSK44M28/04/19941Adultvc57_danes_bc_data
Wood Lane, Newhall, SwadlincoteSK22V28/04/19941Adultvc57_danes_bc_data
The Field,Shipley,IlkestonSK44M28/04/19941Adultvc57_danes_bc_data
Back Lane,GlapwellSK46T03/05/19901Adultvc57_danes_bc_data
Back Lane, GlapwellSK46T03/05/19901Adultvc57_danes_bc_data
Pond House, Mapperley Res, IlkestonSK44G06/05/19891Adultvc57_danes_bc_data
Pond House, Mapperley Res, IlkestonSK44G06/05/19891Adultvc57_danes_bc_data
Carvers Rocks NR,Hartshorne,SwadlincoteSK32G14/05/19791Adultvc57_danes_bc_data
Carvers Rocks, Hartshorne, SwadlincoteSK32G14/05/19792Adultvc57_danes_bc_data
Carvers Rocks, Hartshorne, SwadlincoteSK32G05/05/19791Adultvc57_danes_bc_data

Marbled Brown       Iron Prominent

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